^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* xfrm_user.c: User interface to configure xfrm engine.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2002 David S. Miller (davem@redhat.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Changes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Mitsuru KANDA @USAGI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Kazunori MIYAZAWA @USAGI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Kunihiro Ishiguro <kunihiro@ipinfusion.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * IPv6 support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/crypto.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/socket.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/net.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/pfkeyv2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/ipsec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/security.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <net/xfrm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <net/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <net/ah.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/in6.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct nlattr *rt = attrs[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct xfrm_algo *algp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (!rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) algp = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (nla_len(rt) < (int)xfrm_alg_len(algp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) case XFRMA_ALG_AUTH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) case XFRMA_ALG_CRYPT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) case XFRMA_ALG_COMP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static int verify_auth_trunc(struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct nlattr *rt = attrs[XFRMA_ALG_AUTH_TRUNC];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct xfrm_algo_auth *algp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (!rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) algp = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (nla_len(rt) < (int)xfrm_alg_auth_len(algp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static int verify_aead(struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) struct nlattr *rt = attrs[XFRMA_ALG_AEAD];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct xfrm_algo_aead *algp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (!rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) algp = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (nla_len(rt) < (int)aead_len(algp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static void verify_one_addr(struct nlattr **attrs, enum xfrm_attr_type_t type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) xfrm_address_t **addrp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct nlattr *rt = attrs[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (rt && addrp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) *addrp = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static inline int verify_sec_ctx_len(struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct nlattr *rt = attrs[XFRMA_SEC_CTX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct xfrm_user_sec_ctx *uctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (!rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) uctx = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (uctx->len > nla_len(rt) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) uctx->len != (sizeof(struct xfrm_user_sec_ctx) + uctx->ctx_len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static inline int verify_replay(struct xfrm_usersa_info *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) struct nlattr *rt = attrs[XFRMA_REPLAY_ESN_VAL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct xfrm_replay_state_esn *rs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (!rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return (p->flags & XFRM_STATE_ESN) ? -EINVAL : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) rs = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (nla_len(rt) < (int)xfrm_replay_state_esn_len(rs) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) nla_len(rt) != sizeof(*rs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) /* As only ESP and AH support ESN feature. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if ((p->id.proto != IPPROTO_ESP) && (p->id.proto != IPPROTO_AH))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (p->replay_window != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static int verify_newsa_info(struct xfrm_usersa_info *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) switch (p->family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) case AF_INET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) case AF_INET6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) err = -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) switch (p->sel.family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) case AF_UNSPEC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) case AF_INET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (p->sel.prefixlen_d > 32 || p->sel.prefixlen_s > 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) case AF_INET6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (p->sel.prefixlen_d > 128 || p->sel.prefixlen_s > 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) err = -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) switch (p->id.proto) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) case IPPROTO_AH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) if ((!attrs[XFRMA_ALG_AUTH] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) !attrs[XFRMA_ALG_AUTH_TRUNC]) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) attrs[XFRMA_ALG_AEAD] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) attrs[XFRMA_ALG_CRYPT] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) attrs[XFRMA_ALG_COMP] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) attrs[XFRMA_TFCPAD])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) case IPPROTO_ESP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (attrs[XFRMA_ALG_COMP])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (!attrs[XFRMA_ALG_AUTH] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) !attrs[XFRMA_ALG_AUTH_TRUNC] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) !attrs[XFRMA_ALG_CRYPT] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) !attrs[XFRMA_ALG_AEAD])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if ((attrs[XFRMA_ALG_AUTH] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) attrs[XFRMA_ALG_AUTH_TRUNC] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) attrs[XFRMA_ALG_CRYPT]) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) attrs[XFRMA_ALG_AEAD])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (attrs[XFRMA_TFCPAD] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) p->mode != XFRM_MODE_TUNNEL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) case IPPROTO_COMP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (!attrs[XFRMA_ALG_COMP] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) attrs[XFRMA_ALG_AEAD] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) attrs[XFRMA_ALG_AUTH] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) attrs[XFRMA_ALG_AUTH_TRUNC] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) attrs[XFRMA_ALG_CRYPT] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) attrs[XFRMA_TFCPAD] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) (ntohl(p->id.spi) >= 0x10000))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) case IPPROTO_DSTOPTS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) case IPPROTO_ROUTING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (attrs[XFRMA_ALG_COMP] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) attrs[XFRMA_ALG_AUTH] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) attrs[XFRMA_ALG_AUTH_TRUNC] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) attrs[XFRMA_ALG_AEAD] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) attrs[XFRMA_ALG_CRYPT] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) attrs[XFRMA_ENCAP] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) attrs[XFRMA_SEC_CTX] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) attrs[XFRMA_TFCPAD] ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) !attrs[XFRMA_COADDR])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if ((err = verify_aead(attrs)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if ((err = verify_auth_trunc(attrs)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if ((err = verify_one_alg(attrs, XFRMA_ALG_AUTH)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if ((err = verify_one_alg(attrs, XFRMA_ALG_CRYPT)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if ((err = verify_one_alg(attrs, XFRMA_ALG_COMP)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if ((err = verify_sec_ctx_len(attrs)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if ((err = verify_replay(p, attrs)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) switch (p->mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) case XFRM_MODE_TRANSPORT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) case XFRM_MODE_TUNNEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) case XFRM_MODE_ROUTEOPTIMIZATION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) case XFRM_MODE_BEET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct xfrm_algo_desc *(*get_byname)(const char *, int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct nlattr *rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) struct xfrm_algo *p, *ualg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) struct xfrm_algo_desc *algo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (!rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) ualg = nla_data(rta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) algo = get_byname(ualg->alg_name, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) if (!algo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) *props = algo->desc.sadb_alg_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) p = kmemdup(ualg, xfrm_alg_len(ualg), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) strcpy(p->alg_name, algo->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) *algpp = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) static int attach_crypt(struct xfrm_state *x, struct nlattr *rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) struct xfrm_algo *p, *ualg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) struct xfrm_algo_desc *algo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (!rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) ualg = nla_data(rta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) algo = xfrm_ealg_get_byname(ualg->alg_name, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (!algo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) x->props.ealgo = algo->desc.sadb_alg_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) p = kmemdup(ualg, xfrm_alg_len(ualg), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) strcpy(p->alg_name, algo->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) x->ealg = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) x->geniv = algo->uinfo.encr.geniv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) static int attach_auth(struct xfrm_algo_auth **algpp, u8 *props,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) struct nlattr *rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) struct xfrm_algo *ualg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) struct xfrm_algo_auth *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) struct xfrm_algo_desc *algo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (!rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) ualg = nla_data(rta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) algo = xfrm_aalg_get_byname(ualg->alg_name, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) if (!algo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) *props = algo->desc.sadb_alg_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) p = kmalloc(sizeof(*p) + (ualg->alg_key_len + 7) / 8, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) strcpy(p->alg_name, algo->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) p->alg_key_len = ualg->alg_key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) p->alg_trunc_len = algo->uinfo.auth.icv_truncbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) memcpy(p->alg_key, ualg->alg_key, (ualg->alg_key_len + 7) / 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) *algpp = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) static int attach_auth_trunc(struct xfrm_algo_auth **algpp, u8 *props,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) struct nlattr *rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) struct xfrm_algo_auth *p, *ualg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) struct xfrm_algo_desc *algo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) if (!rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) ualg = nla_data(rta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) algo = xfrm_aalg_get_byname(ualg->alg_name, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (!algo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) if (ualg->alg_trunc_len > algo->uinfo.auth.icv_fullbits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) *props = algo->desc.sadb_alg_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) p = kmemdup(ualg, xfrm_alg_auth_len(ualg), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) strcpy(p->alg_name, algo->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (!p->alg_trunc_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) p->alg_trunc_len = algo->uinfo.auth.icv_truncbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) *algpp = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) static int attach_aead(struct xfrm_state *x, struct nlattr *rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) struct xfrm_algo_aead *p, *ualg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) struct xfrm_algo_desc *algo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (!rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) ualg = nla_data(rta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) algo = xfrm_aead_get_byname(ualg->alg_name, ualg->alg_icv_len, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) if (!algo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) x->props.ealgo = algo->desc.sadb_alg_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) p = kmemdup(ualg, aead_len(ualg), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) strcpy(p->alg_name, algo->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) x->aead = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) x->geniv = algo->uinfo.aead.geniv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static inline int xfrm_replay_verify_len(struct xfrm_replay_state_esn *replay_esn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) struct nlattr *rp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) struct xfrm_replay_state_esn *up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) unsigned int ulen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) if (!replay_esn || !rp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) up = nla_data(rp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) ulen = xfrm_replay_state_esn_len(up);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) /* Check the overall length and the internal bitmap length to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) * potential overflow. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (nla_len(rp) < (int)ulen ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) xfrm_replay_state_esn_len(replay_esn) != ulen ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) replay_esn->bmp_len != up->bmp_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (up->replay_window > up->bmp_len * sizeof(__u32) * 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) static int xfrm_alloc_replay_state_esn(struct xfrm_replay_state_esn **replay_esn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) struct xfrm_replay_state_esn **preplay_esn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) struct nlattr *rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) struct xfrm_replay_state_esn *p, *pp, *up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) unsigned int klen, ulen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if (!rta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) up = nla_data(rta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) klen = xfrm_replay_state_esn_len(up);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) ulen = nla_len(rta) >= (int)klen ? klen : sizeof(*up);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) p = kzalloc(klen, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) pp = kzalloc(klen, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) if (!pp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) kfree(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) memcpy(p, up, ulen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) memcpy(pp, up, ulen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) *replay_esn = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) *preplay_esn = pp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) static inline unsigned int xfrm_user_sec_ctx_size(struct xfrm_sec_ctx *xfrm_ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) unsigned int len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) if (xfrm_ctx) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) len += sizeof(struct xfrm_user_sec_ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) len += xfrm_ctx->ctx_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) static void copy_from_user_state(struct xfrm_state *x, struct xfrm_usersa_info *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) memcpy(&x->id, &p->id, sizeof(x->id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) memcpy(&x->sel, &p->sel, sizeof(x->sel));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) memcpy(&x->lft, &p->lft, sizeof(x->lft));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) x->props.mode = p->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) x->props.replay_window = min_t(unsigned int, p->replay_window,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) sizeof(x->replay.bitmap) * 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) x->props.reqid = p->reqid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) x->props.family = p->family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) memcpy(&x->props.saddr, &p->saddr, sizeof(x->props.saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) x->props.flags = p->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (!x->sel.family && !(p->flags & XFRM_STATE_AF_UNSPEC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) x->sel.family = p->family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) * someday when pfkey also has support, we could have the code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) * somehow made shareable and move it to xfrm_state.c - JHS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) static void xfrm_update_ae_params(struct xfrm_state *x, struct nlattr **attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) int update_esn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) struct nlattr *rp = attrs[XFRMA_REPLAY_VAL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) struct nlattr *re = update_esn ? attrs[XFRMA_REPLAY_ESN_VAL] : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) struct nlattr *lt = attrs[XFRMA_LTIME_VAL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) struct nlattr *et = attrs[XFRMA_ETIMER_THRESH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) struct nlattr *rt = attrs[XFRMA_REPLAY_THRESH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (re) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) struct xfrm_replay_state_esn *replay_esn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) replay_esn = nla_data(re);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) memcpy(x->replay_esn, replay_esn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) xfrm_replay_state_esn_len(replay_esn));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) memcpy(x->preplay_esn, replay_esn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) xfrm_replay_state_esn_len(replay_esn));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) if (rp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) struct xfrm_replay_state *replay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) replay = nla_data(rp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) memcpy(&x->replay, replay, sizeof(*replay));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) memcpy(&x->preplay, replay, sizeof(*replay));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) if (lt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) struct xfrm_lifetime_cur *ltime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) ltime = nla_data(lt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) x->curlft.bytes = ltime->bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) x->curlft.packets = ltime->packets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) x->curlft.add_time = ltime->add_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) x->curlft.use_time = ltime->use_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if (et)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) x->replay_maxage = nla_get_u32(et);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) if (rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) x->replay_maxdiff = nla_get_u32(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) static void xfrm_smark_init(struct nlattr **attrs, struct xfrm_mark *m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) if (attrs[XFRMA_SET_MARK]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) m->v = nla_get_u32(attrs[XFRMA_SET_MARK]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) if (attrs[XFRMA_SET_MARK_MASK])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) m->m = nla_get_u32(attrs[XFRMA_SET_MARK_MASK]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) m->m = 0xffffffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) m->v = m->m = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) static struct xfrm_state *xfrm_state_construct(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) struct xfrm_usersa_info *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) struct nlattr **attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) int *errp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) struct xfrm_state *x = xfrm_state_alloc(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) int err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) if (!x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) goto error_no_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) copy_from_user_state(x, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) if (attrs[XFRMA_ENCAP]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) x->encap = kmemdup(nla_data(attrs[XFRMA_ENCAP]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) sizeof(*x->encap), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) if (x->encap == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) if (attrs[XFRMA_COADDR]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) x->coaddr = kmemdup(nla_data(attrs[XFRMA_COADDR]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) sizeof(*x->coaddr), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (x->coaddr == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (attrs[XFRMA_SA_EXTRA_FLAGS])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) x->props.extra_flags = nla_get_u32(attrs[XFRMA_SA_EXTRA_FLAGS]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) if ((err = attach_aead(x, attrs[XFRMA_ALG_AEAD])))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) if ((err = attach_auth_trunc(&x->aalg, &x->props.aalgo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) attrs[XFRMA_ALG_AUTH_TRUNC])))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) if (!x->props.aalgo) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if ((err = attach_auth(&x->aalg, &x->props.aalgo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) attrs[XFRMA_ALG_AUTH])))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if ((err = attach_crypt(x, attrs[XFRMA_ALG_CRYPT])))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) if ((err = attach_one_algo(&x->calg, &x->props.calgo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) xfrm_calg_get_byname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) attrs[XFRMA_ALG_COMP])))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) if (attrs[XFRMA_TFCPAD])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) x->tfcpad = nla_get_u32(attrs[XFRMA_TFCPAD]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) xfrm_mark_get(attrs, &x->mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) xfrm_smark_init(attrs, &x->props.smark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) if (attrs[XFRMA_IF_ID])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) x->if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) err = __xfrm_init_state(x, false, attrs[XFRMA_OFFLOAD_DEV]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) if (attrs[XFRMA_SEC_CTX]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) err = security_xfrm_state_alloc(x,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) nla_data(attrs[XFRMA_SEC_CTX]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if ((err = xfrm_alloc_replay_state_esn(&x->replay_esn, &x->preplay_esn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) attrs[XFRMA_REPLAY_ESN_VAL])))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) x->km.seq = p->seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) x->replay_maxdiff = net->xfrm.sysctl_aevent_rseqth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) /* sysctl_xfrm_aevent_etime is in 100ms units */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) x->replay_maxage = (net->xfrm.sysctl_aevent_etime*HZ)/XFRM_AE_ETH_M;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) if ((err = xfrm_init_replay(x)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) /* override default values from above */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) xfrm_update_ae_params(x, attrs, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) /* configure the hardware if offload is requested */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) if (attrs[XFRMA_OFFLOAD_DEV]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) err = xfrm_dev_state_add(net, x,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) nla_data(attrs[XFRMA_OFFLOAD_DEV]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) return x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) x->km.state = XFRM_STATE_DEAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) error_no_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) *errp = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) struct xfrm_usersa_info *p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) struct xfrm_state *x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) struct km_event c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) err = verify_newsa_info(p, attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) x = xfrm_state_construct(net, p, attrs, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) if (!x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) xfrm_state_hold(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) if (nlh->nlmsg_type == XFRM_MSG_NEWSA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) err = xfrm_state_add(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) err = xfrm_state_update(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) xfrm_audit_state_add(x, err ? 0 : 1, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) x->km.state = XFRM_STATE_DEAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) xfrm_dev_state_delete(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) __xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if (x->km.state == XFRM_STATE_VOID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) x->km.state = XFRM_STATE_VALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) c.seq = nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) c.portid = nlh->nlmsg_pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) c.event = nlh->nlmsg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) km_state_notify(x, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) static struct xfrm_state *xfrm_user_state_lookup(struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) struct xfrm_usersa_id *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) struct nlattr **attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) int *errp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) struct xfrm_state *x = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) struct xfrm_mark m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) u32 mark = xfrm_mark_get(attrs, &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) if (xfrm_id_proto_match(p->proto, IPSEC_PROTO_ANY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) err = -ESRCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) x = xfrm_state_lookup(net, mark, &p->daddr, p->spi, p->proto, p->family);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) xfrm_address_t *saddr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) verify_one_addr(attrs, XFRMA_SRCADDR, &saddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) if (!saddr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) err = -ESRCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) x = xfrm_state_lookup_byaddr(net, mark,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) &p->daddr, saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) p->proto, p->family);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) if (!x && errp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) *errp = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) return x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) struct xfrm_state *x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) int err = -ESRCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) struct km_event c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) struct xfrm_usersa_id *p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) x = xfrm_user_state_lookup(net, p, attrs, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) if (x == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) if ((err = security_xfrm_state_delete(x)) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) if (xfrm_state_kern(x)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) err = -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) err = xfrm_state_delete(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) c.seq = nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) c.portid = nlh->nlmsg_pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) c.event = nlh->nlmsg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) km_state_notify(x, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) xfrm_audit_state_delete(x, err ? 0 : 1, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) static void copy_to_user_state(struct xfrm_state *x, struct xfrm_usersa_info *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) memset(p, 0, sizeof(*p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) memcpy(&p->id, &x->id, sizeof(p->id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) memcpy(&p->sel, &x->sel, sizeof(p->sel));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) memcpy(&p->lft, &x->lft, sizeof(p->lft));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) memcpy(&p->curlft, &x->curlft, sizeof(p->curlft));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) put_unaligned(x->stats.replay_window, &p->stats.replay_window);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) put_unaligned(x->stats.replay, &p->stats.replay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) put_unaligned(x->stats.integrity_failed, &p->stats.integrity_failed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) memcpy(&p->saddr, &x->props.saddr, sizeof(p->saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) p->mode = x->props.mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) p->replay_window = x->props.replay_window;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) p->reqid = x->props.reqid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) p->family = x->props.family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) p->flags = x->props.flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) p->seq = x->km.seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) struct xfrm_dump_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) struct sk_buff *in_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) struct sk_buff *out_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) u32 nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) u16 nlmsg_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) static int copy_sec_ctx(struct xfrm_sec_ctx *s, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) struct xfrm_user_sec_ctx *uctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) struct nlattr *attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) int ctx_size = sizeof(*uctx) + s->ctx_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) attr = nla_reserve(skb, XFRMA_SEC_CTX, ctx_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) if (attr == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) uctx = nla_data(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) uctx->exttype = XFRMA_SEC_CTX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) uctx->len = ctx_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) uctx->ctx_doi = s->ctx_doi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) uctx->ctx_alg = s->ctx_alg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) uctx->ctx_len = s->ctx_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) memcpy(uctx + 1, s->ctx_str, s->ctx_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) static int copy_user_offload(struct xfrm_state_offload *xso, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) struct xfrm_user_offload *xuo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) struct nlattr *attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) attr = nla_reserve(skb, XFRMA_OFFLOAD_DEV, sizeof(*xuo));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) if (attr == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) xuo = nla_data(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) memset(xuo, 0, sizeof(*xuo));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) xuo->ifindex = xso->dev->ifindex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) xuo->flags = xso->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) static int copy_to_user_auth(struct xfrm_algo_auth *auth, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) struct xfrm_algo *algo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) struct nlattr *nla;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) nla = nla_reserve(skb, XFRMA_ALG_AUTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) sizeof(*algo) + (auth->alg_key_len + 7) / 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) if (!nla)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) algo = nla_data(nla);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) strncpy(algo->alg_name, auth->alg_name, sizeof(algo->alg_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) memcpy(algo->alg_key, auth->alg_key, (auth->alg_key_len + 7) / 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) algo->alg_key_len = auth->alg_key_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) static int xfrm_smark_put(struct sk_buff *skb, struct xfrm_mark *m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) if (m->v | m->m) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) ret = nla_put_u32(skb, XFRMA_SET_MARK, m->v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) ret = nla_put_u32(skb, XFRMA_SET_MARK_MASK, m->m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) /* Don't change this without updating xfrm_sa_len! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) static int copy_to_user_state_extra(struct xfrm_state *x,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) struct xfrm_usersa_info *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) copy_to_user_state(x, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) if (x->props.extra_flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) ret = nla_put_u32(skb, XFRMA_SA_EXTRA_FLAGS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) x->props.extra_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) if (x->coaddr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) ret = nla_put(skb, XFRMA_COADDR, sizeof(*x->coaddr), x->coaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) if (x->lastused) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) ret = nla_put_u64_64bit(skb, XFRMA_LASTUSED, x->lastused,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) XFRMA_PAD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) if (x->aead) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) ret = nla_put(skb, XFRMA_ALG_AEAD, aead_len(x->aead), x->aead);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) if (x->aalg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) ret = copy_to_user_auth(x->aalg, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) ret = nla_put(skb, XFRMA_ALG_AUTH_TRUNC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) xfrm_alg_auth_len(x->aalg), x->aalg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) if (x->ealg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) ret = nla_put(skb, XFRMA_ALG_CRYPT, xfrm_alg_len(x->ealg), x->ealg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) if (x->calg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) ret = nla_put(skb, XFRMA_ALG_COMP, sizeof(*(x->calg)), x->calg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) if (x->encap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) ret = nla_put(skb, XFRMA_ENCAP, sizeof(*x->encap), x->encap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) if (x->tfcpad) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) ret = nla_put_u32(skb, XFRMA_TFCPAD, x->tfcpad);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) ret = xfrm_mark_put(skb, &x->mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) ret = xfrm_smark_put(skb, &x->props.smark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) if (x->replay_esn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) ret = nla_put(skb, XFRMA_REPLAY_ESN_VAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) xfrm_replay_state_esn_len(x->replay_esn),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) x->replay_esn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) ret = nla_put(skb, XFRMA_REPLAY_VAL, sizeof(x->replay),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) &x->replay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) if(x->xso.dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) ret = copy_user_offload(&x->xso, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) if (x->if_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) ret = nla_put_u32(skb, XFRMA_IF_ID, x->if_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) if (x->security)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) ret = copy_sec_ctx(x->security, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) static int dump_one_state(struct xfrm_state *x, int count, void *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) struct xfrm_dump_info *sp = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) struct sk_buff *in_skb = sp->in_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) struct sk_buff *skb = sp->out_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) struct xfrm_translator *xtr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) struct xfrm_usersa_info *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, sp->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) XFRM_MSG_NEWSA, sizeof(*p), sp->nlmsg_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) err = copy_to_user_state_extra(x, p, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) xtr = xfrm_get_translator();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) if (xtr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) err = xtr->alloc_compat(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) xfrm_put_translator(xtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) static int xfrm_dump_sa_done(struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) struct xfrm_state_walk *walk = (struct xfrm_state_walk *) &cb->args[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) struct sock *sk = cb->skb->sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) struct net *net = sock_net(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) if (cb->args[0])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) xfrm_state_walk_done(walk, net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) struct xfrm_state_walk *walk = (struct xfrm_state_walk *) &cb->args[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) struct xfrm_dump_info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) BUILD_BUG_ON(sizeof(struct xfrm_state_walk) >
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) sizeof(cb->args) - sizeof(cb->args[0]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) info.in_skb = cb->skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) info.out_skb = skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) info.nlmsg_seq = cb->nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) info.nlmsg_flags = NLM_F_MULTI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) if (!cb->args[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) struct nlattr *attrs[XFRMA_MAX+1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) struct xfrm_address_filter *filter = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) u8 proto = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) err = nlmsg_parse_deprecated(cb->nlh, 0, attrs, XFRMA_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) xfrma_policy, cb->extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) if (attrs[XFRMA_ADDRESS_FILTER]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) filter = kmemdup(nla_data(attrs[XFRMA_ADDRESS_FILTER]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) sizeof(*filter), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) if (filter == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) if (attrs[XFRMA_PROTO])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) proto = nla_get_u8(attrs[XFRMA_PROTO]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) xfrm_state_walk_init(walk, proto, filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) cb->args[0] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) (void) xfrm_state_walk(net, walk, dump_one_state, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) return skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) static struct sk_buff *xfrm_state_netlink(struct sk_buff *in_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) struct xfrm_state *x, u32 seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) struct xfrm_dump_info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) info.in_skb = in_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) info.out_skb = skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) info.nlmsg_seq = seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) info.nlmsg_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) err = dump_one_state(x, 0, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) return ERR_PTR(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) return skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) /* A wrapper for nlmsg_multicast() checking that nlsk is still available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) * Must be called with RCU read lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) static inline int xfrm_nlmsg_multicast(struct net *net, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) u32 pid, unsigned int group)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) struct sock *nlsk = rcu_dereference(net->xfrm.nlsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) struct xfrm_translator *xtr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) if (!nlsk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) return -EPIPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) xtr = xfrm_get_translator();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) if (xtr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) int err = xtr->alloc_compat(skb, nlmsg_hdr(skb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) xfrm_put_translator(xtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) return nlmsg_multicast(nlsk, skb, pid, group, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) static inline unsigned int xfrm_spdinfo_msgsize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) return NLMSG_ALIGN(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) + nla_total_size(sizeof(struct xfrmu_spdinfo))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) + nla_total_size(sizeof(struct xfrmu_spdhinfo))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) + nla_total_size(sizeof(struct xfrmu_spdhthresh))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) + nla_total_size(sizeof(struct xfrmu_spdhthresh));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) static int build_spdinfo(struct sk_buff *skb, struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) u32 portid, u32 seq, u32 flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) struct xfrmk_spdinfo si;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) struct xfrmu_spdinfo spc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) struct xfrmu_spdhinfo sph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) struct xfrmu_spdhthresh spt4, spt6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) u32 *f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) unsigned lseq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) nlh = nlmsg_put(skb, portid, seq, XFRM_MSG_NEWSPDINFO, sizeof(u32), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) if (nlh == NULL) /* shouldn't really happen ... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) f = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) *f = flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) xfrm_spd_getinfo(net, &si);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) spc.incnt = si.incnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) spc.outcnt = si.outcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) spc.fwdcnt = si.fwdcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) spc.inscnt = si.inscnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) spc.outscnt = si.outscnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) spc.fwdscnt = si.fwdscnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) sph.spdhcnt = si.spdhcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) sph.spdhmcnt = si.spdhmcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) lseq = read_seqbegin(&net->xfrm.policy_hthresh.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) spt4.lbits = net->xfrm.policy_hthresh.lbits4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) spt4.rbits = net->xfrm.policy_hthresh.rbits4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) spt6.lbits = net->xfrm.policy_hthresh.lbits6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) spt6.rbits = net->xfrm.policy_hthresh.rbits6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) } while (read_seqretry(&net->xfrm.policy_hthresh.lock, lseq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) err = nla_put(skb, XFRMA_SPD_INFO, sizeof(spc), &spc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) err = nla_put(skb, XFRMA_SPD_HINFO, sizeof(sph), &sph);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) err = nla_put(skb, XFRMA_SPD_IPV4_HTHRESH, sizeof(spt4), &spt4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) err = nla_put(skb, XFRMA_SPD_IPV6_HTHRESH, sizeof(spt6), &spt6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) static int xfrm_set_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) struct xfrmu_spdhthresh *thresh4 = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) struct xfrmu_spdhthresh *thresh6 = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) /* selector prefixlen thresholds to hash policies */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) if (attrs[XFRMA_SPD_IPV4_HTHRESH]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) struct nlattr *rta = attrs[XFRMA_SPD_IPV4_HTHRESH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) if (nla_len(rta) < sizeof(*thresh4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) thresh4 = nla_data(rta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) if (thresh4->lbits > 32 || thresh4->rbits > 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) if (attrs[XFRMA_SPD_IPV6_HTHRESH]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) struct nlattr *rta = attrs[XFRMA_SPD_IPV6_HTHRESH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) if (nla_len(rta) < sizeof(*thresh6))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) thresh6 = nla_data(rta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) if (thresh6->lbits > 128 || thresh6->rbits > 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) if (thresh4 || thresh6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) write_seqlock(&net->xfrm.policy_hthresh.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) if (thresh4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) net->xfrm.policy_hthresh.lbits4 = thresh4->lbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) net->xfrm.policy_hthresh.rbits4 = thresh4->rbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) if (thresh6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) net->xfrm.policy_hthresh.lbits6 = thresh6->lbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) net->xfrm.policy_hthresh.rbits6 = thresh6->rbits;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) write_sequnlock(&net->xfrm.policy_hthresh.lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) xfrm_policy_hash_rebuild(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) static int xfrm_get_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) struct sk_buff *r_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) u32 *flags = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) u32 sportid = NETLINK_CB(skb).portid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) u32 seq = nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) r_skb = nlmsg_new(xfrm_spdinfo_msgsize(), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) if (r_skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) err = build_spdinfo(r_skb, net, sportid, seq, *flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) BUG_ON(err < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) return nlmsg_unicast(net->xfrm.nlsk, r_skb, sportid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) static inline unsigned int xfrm_sadinfo_msgsize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) return NLMSG_ALIGN(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) + nla_total_size(sizeof(struct xfrmu_sadhinfo))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) + nla_total_size(4); /* XFRMA_SAD_CNT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) static int build_sadinfo(struct sk_buff *skb, struct net *net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) u32 portid, u32 seq, u32 flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) struct xfrmk_sadinfo si;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) struct xfrmu_sadhinfo sh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) u32 *f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) nlh = nlmsg_put(skb, portid, seq, XFRM_MSG_NEWSADINFO, sizeof(u32), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) if (nlh == NULL) /* shouldn't really happen ... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) f = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) *f = flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) xfrm_sad_getinfo(net, &si);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) sh.sadhmcnt = si.sadhmcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) sh.sadhcnt = si.sadhcnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) err = nla_put_u32(skb, XFRMA_SAD_CNT, si.sadcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) err = nla_put(skb, XFRMA_SAD_HINFO, sizeof(sh), &sh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) struct sk_buff *r_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) u32 *flags = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) u32 sportid = NETLINK_CB(skb).portid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) u32 seq = nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) r_skb = nlmsg_new(xfrm_sadinfo_msgsize(), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) if (r_skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) err = build_sadinfo(r_skb, net, sportid, seq, *flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) BUG_ON(err < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) return nlmsg_unicast(net->xfrm.nlsk, r_skb, sportid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) static int xfrm_get_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) struct xfrm_usersa_id *p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) struct xfrm_state *x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) struct sk_buff *resp_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) int err = -ESRCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) x = xfrm_user_state_lookup(net, p, attrs, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) if (x == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) goto out_noput;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) resp_skb = xfrm_state_netlink(skb, x, nlh->nlmsg_seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) if (IS_ERR(resp_skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) err = PTR_ERR(resp_skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) err = nlmsg_unicast(net->xfrm.nlsk, resp_skb, NETLINK_CB(skb).portid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) out_noput:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) struct xfrm_state *x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) struct xfrm_userspi_info *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) struct xfrm_translator *xtr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) struct sk_buff *resp_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) xfrm_address_t *daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) int family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) u32 mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) struct xfrm_mark m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) u32 if_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) err = verify_spi_info(p->info.id.proto, p->min, p->max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) goto out_noput;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) family = p->info.family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) daddr = &p->info.id.daddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) x = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) mark = xfrm_mark_get(attrs, &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) if (attrs[XFRMA_IF_ID])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) if (p->info.seq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) x = xfrm_find_acq_byseq(net, mark, p->info.seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) if (x && !xfrm_addr_equal(&x->id.daddr, daddr, family)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) x = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) if (!x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) x = xfrm_find_acq(net, &m, p->info.mode, p->info.reqid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) if_id, p->info.id.proto, daddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) &p->info.saddr, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) family);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) if (x == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) goto out_noput;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) err = xfrm_alloc_spi(x, p->min, p->max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) resp_skb = xfrm_state_netlink(skb, x, nlh->nlmsg_seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) if (IS_ERR(resp_skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) err = PTR_ERR(resp_skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) xtr = xfrm_get_translator();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) if (xtr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) err = xtr->alloc_compat(skb, nlmsg_hdr(skb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) xfrm_put_translator(xtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) kfree_skb(resp_skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) err = nlmsg_unicast(net->xfrm.nlsk, resp_skb, NETLINK_CB(skb).portid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) out_noput:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) static int verify_policy_dir(u8 dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) switch (dir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) case XFRM_POLICY_IN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) case XFRM_POLICY_OUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) case XFRM_POLICY_FWD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) static int verify_policy_type(u8 type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) case XFRM_POLICY_TYPE_MAIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) #ifdef CONFIG_XFRM_SUB_POLICY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) case XFRM_POLICY_TYPE_SUB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) switch (p->share) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) case XFRM_SHARE_ANY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) case XFRM_SHARE_SESSION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) case XFRM_SHARE_USER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) case XFRM_SHARE_UNIQUE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) switch (p->action) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) case XFRM_POLICY_ALLOW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) case XFRM_POLICY_BLOCK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) switch (p->sel.family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) case AF_INET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) if (p->sel.prefixlen_d > 32 || p->sel.prefixlen_s > 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) case AF_INET6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) if (p->sel.prefixlen_d > 128 || p->sel.prefixlen_s > 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) return -EAFNOSUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) ret = verify_policy_dir(p->dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) if (p->index && (xfrm_policy_id2dir(p->index) != p->dir))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) static int copy_from_user_sec_ctx(struct xfrm_policy *pol, struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) struct nlattr *rt = attrs[XFRMA_SEC_CTX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) struct xfrm_user_sec_ctx *uctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) if (!rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) uctx = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) return security_xfrm_policy_alloc(&pol->security, uctx, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) static void copy_templates(struct xfrm_policy *xp, struct xfrm_user_tmpl *ut,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) int nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) xp->xfrm_nr = nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) for (i = 0; i < nr; i++, ut++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) struct xfrm_tmpl *t = &xp->xfrm_vec[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) memcpy(&t->id, &ut->id, sizeof(struct xfrm_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) memcpy(&t->saddr, &ut->saddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) sizeof(xfrm_address_t));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) t->reqid = ut->reqid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) t->mode = ut->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) t->share = ut->share;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) t->optional = ut->optional;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) t->aalgos = ut->aalgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) t->ealgos = ut->ealgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) t->calgos = ut->calgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) /* If all masks are ~0, then we allow all algorithms. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) t->allalgs = !~(t->aalgos & t->ealgos & t->calgos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) t->encap_family = ut->family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) u16 prev_family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) if (nr > XFRM_MAX_DEPTH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) prev_family = family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) for (i = 0; i < nr; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) /* We never validated the ut->family value, so many
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) * applications simply leave it at zero. The check was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) * never made and ut->family was ignored because all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) * templates could be assumed to have the same family as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) * the policy itself. Now that we will have ipv4-in-ipv6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) * and ipv6-in-ipv4 tunnels, this is no longer true.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) if (!ut[i].family)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) ut[i].family = family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) switch (ut[i].mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) case XFRM_MODE_TUNNEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) case XFRM_MODE_BEET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) if (ut[i].family != prev_family)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) if (ut[i].mode >= XFRM_MODE_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) prev_family = ut[i].family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) switch (ut[i].family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) case AF_INET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) case AF_INET6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) if (!xfrm_id_proto_valid(ut[i].id.proto))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) static int copy_from_user_tmpl(struct xfrm_policy *pol, struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) struct nlattr *rt = attrs[XFRMA_TMPL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) if (!rt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) pol->xfrm_nr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) struct xfrm_user_tmpl *utmpl = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) int nr = nla_len(rt) / sizeof(*utmpl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) err = validate_tmpl(nr, utmpl, pol->family);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) copy_templates(pol, utmpl, nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) static int copy_from_user_policy_type(u8 *tp, struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) struct nlattr *rt = attrs[XFRMA_POLICY_TYPE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) struct xfrm_userpolicy_type *upt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) u8 type = XFRM_POLICY_TYPE_MAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) if (rt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) upt = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) type = upt->type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) err = verify_policy_type(type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) *tp = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) static void copy_from_user_policy(struct xfrm_policy *xp, struct xfrm_userpolicy_info *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) xp->priority = p->priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) xp->index = p->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) memcpy(&xp->selector, &p->sel, sizeof(xp->selector));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) memcpy(&xp->lft, &p->lft, sizeof(xp->lft));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) xp->action = p->action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) xp->flags = p->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) xp->family = p->sel.family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) /* XXX xp->share = p->share; */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) static void copy_to_user_policy(struct xfrm_policy *xp, struct xfrm_userpolicy_info *p, int dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) memset(p, 0, sizeof(*p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) memcpy(&p->sel, &xp->selector, sizeof(p->sel));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) memcpy(&p->lft, &xp->lft, sizeof(p->lft));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) memcpy(&p->curlft, &xp->curlft, sizeof(p->curlft));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) p->priority = xp->priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) p->index = xp->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) p->sel.family = xp->family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) p->dir = dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) p->action = xp->action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) p->flags = xp->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) p->share = XFRM_SHARE_ANY; /* XXX xp->share */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) static struct xfrm_policy *xfrm_policy_construct(struct net *net, struct xfrm_userpolicy_info *p, struct nlattr **attrs, int *errp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) struct xfrm_policy *xp = xfrm_policy_alloc(net, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) if (!xp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) *errp = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) copy_from_user_policy(xp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) err = copy_from_user_policy_type(&xp->type, attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) if (!(err = copy_from_user_tmpl(xp, attrs)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) err = copy_from_user_sec_ctx(xp, attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) xfrm_mark_get(attrs, &xp->mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) if (attrs[XFRMA_IF_ID])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) xp->if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) return xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) *errp = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) xp->walk.dead = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) xfrm_policy_destroy(xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) struct xfrm_userpolicy_info *p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) struct xfrm_policy *xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) struct km_event c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) int excl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) err = verify_newpolicy_info(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) err = verify_sec_ctx_len(attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) xp = xfrm_policy_construct(net, p, attrs, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) if (!xp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) /* shouldn't excl be based on nlh flags??
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) * Aha! this is anti-netlink really i.e more pfkey derived
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) * in netlink excl is a flag and you wouldnt need
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) * a type XFRM_MSG_UPDPOLICY - JHS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) excl = nlh->nlmsg_type == XFRM_MSG_NEWPOLICY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) err = xfrm_policy_insert(p->dir, xp, excl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) xfrm_audit_policy_add(xp, err ? 0 : 1, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) security_xfrm_policy_free(xp->security);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) kfree(xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) c.event = nlh->nlmsg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) c.seq = nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) c.portid = nlh->nlmsg_pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) km_policy_notify(xp, p->dir, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) xfrm_pol_put(xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) static int copy_to_user_tmpl(struct xfrm_policy *xp, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) struct xfrm_user_tmpl vec[XFRM_MAX_DEPTH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) if (xp->xfrm_nr == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) for (i = 0; i < xp->xfrm_nr; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) struct xfrm_user_tmpl *up = &vec[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) struct xfrm_tmpl *kp = &xp->xfrm_vec[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) memset(up, 0, sizeof(*up));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) memcpy(&up->id, &kp->id, sizeof(up->id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) up->family = kp->encap_family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) memcpy(&up->saddr, &kp->saddr, sizeof(up->saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) up->reqid = kp->reqid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) up->mode = kp->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) up->share = kp->share;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) up->optional = kp->optional;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) up->aalgos = kp->aalgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) up->ealgos = kp->ealgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) up->calgos = kp->calgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) return nla_put(skb, XFRMA_TMPL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr, vec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) static inline int copy_to_user_state_sec_ctx(struct xfrm_state *x, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) if (x->security) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) return copy_sec_ctx(x->security, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) static inline int copy_to_user_sec_ctx(struct xfrm_policy *xp, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) if (xp->security)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) return copy_sec_ctx(xp->security, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) static inline unsigned int userpolicy_type_attrsize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) #ifdef CONFIG_XFRM_SUB_POLICY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) return nla_total_size(sizeof(struct xfrm_userpolicy_type));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) #ifdef CONFIG_XFRM_SUB_POLICY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) static int copy_to_user_policy_type(u8 type, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) struct xfrm_userpolicy_type upt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) /* Sadly there are two holes in struct xfrm_userpolicy_type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) memset(&upt, 0, sizeof(upt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) upt.type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) return nla_put(skb, XFRMA_POLICY_TYPE, sizeof(upt), &upt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) static inline int copy_to_user_policy_type(u8 type, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) static int dump_one_policy(struct xfrm_policy *xp, int dir, int count, void *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) struct xfrm_dump_info *sp = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) struct xfrm_userpolicy_info *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) struct sk_buff *in_skb = sp->in_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) struct sk_buff *skb = sp->out_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) struct xfrm_translator *xtr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) nlh = nlmsg_put(skb, NETLINK_CB(in_skb).portid, sp->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) XFRM_MSG_NEWPOLICY, sizeof(*p), sp->nlmsg_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) copy_to_user_policy(xp, p, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) err = copy_to_user_tmpl(xp, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) err = copy_to_user_sec_ctx(xp, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) err = copy_to_user_policy_type(xp->type, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) err = xfrm_mark_put(skb, &xp->mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) err = xfrm_if_id_put(skb, xp->if_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) xtr = xfrm_get_translator();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) if (xtr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) err = xtr->alloc_compat(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) xfrm_put_translator(xtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) static int xfrm_dump_policy_done(struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) struct net *net = sock_net(cb->skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) xfrm_policy_walk_done(walk, net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) static int xfrm_dump_policy_start(struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) BUILD_BUG_ON(sizeof(*walk) > sizeof(cb->args));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) struct xfrm_dump_info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) info.in_skb = cb->skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) info.out_skb = skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) info.nlmsg_seq = cb->nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) info.nlmsg_flags = NLM_F_MULTI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) (void) xfrm_policy_walk(net, walk, dump_one_policy, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) return skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) static struct sk_buff *xfrm_policy_netlink(struct sk_buff *in_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) struct xfrm_policy *xp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) int dir, u32 seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) struct xfrm_dump_info info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) info.in_skb = in_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) info.out_skb = skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) info.nlmsg_seq = seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) info.nlmsg_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) err = dump_one_policy(xp, dir, 0, &info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) return ERR_PTR(err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) return skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) struct xfrm_policy *xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) struct xfrm_userpolicy_id *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) u8 type = XFRM_POLICY_TYPE_MAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) struct km_event c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) int delete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) struct xfrm_mark m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) u32 if_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) delete = nlh->nlmsg_type == XFRM_MSG_DELPOLICY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) err = copy_from_user_policy_type(&type, attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) err = verify_policy_dir(p->dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) if (attrs[XFRMA_IF_ID])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) xfrm_mark_get(attrs, &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) if (p->index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) xp = xfrm_policy_byid(net, &m, if_id, type, p->dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) p->index, delete, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) struct nlattr *rt = attrs[XFRMA_SEC_CTX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) struct xfrm_sec_ctx *ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) err = verify_sec_ctx_len(attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) ctx = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) if (rt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) struct xfrm_user_sec_ctx *uctx = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) err = security_xfrm_policy_alloc(&ctx, uctx, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) xp = xfrm_policy_bysel_ctx(net, &m, if_id, type, p->dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) &p->sel, ctx, delete, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) security_xfrm_policy_free(ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) if (xp == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) if (!delete) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) struct sk_buff *resp_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) resp_skb = xfrm_policy_netlink(skb, xp, p->dir, nlh->nlmsg_seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) if (IS_ERR(resp_skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) err = PTR_ERR(resp_skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) err = nlmsg_unicast(net->xfrm.nlsk, resp_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) NETLINK_CB(skb).portid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) xfrm_audit_policy_delete(xp, err ? 0 : 1, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) if (err != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) c.data.byid = p->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) c.event = nlh->nlmsg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) c.seq = nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) c.portid = nlh->nlmsg_pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) km_policy_notify(xp, p->dir, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) xfrm_pol_put(xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) struct km_event c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) struct xfrm_usersa_flush *p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) err = xfrm_state_flush(net, p->proto, true, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) if (err == -ESRCH) /* empty table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) c.data.proto = p->proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) c.event = nlh->nlmsg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) c.seq = nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) c.portid = nlh->nlmsg_pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) c.net = net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) km_state_notify(NULL, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) static inline unsigned int xfrm_aevent_msgsize(struct xfrm_state *x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) unsigned int replay_size = x->replay_esn ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) xfrm_replay_state_esn_len(x->replay_esn) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) sizeof(struct xfrm_replay_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) return NLMSG_ALIGN(sizeof(struct xfrm_aevent_id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) + nla_total_size(replay_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) + nla_total_size_64bit(sizeof(struct xfrm_lifetime_cur))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) + nla_total_size(sizeof(struct xfrm_mark))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) + nla_total_size(4) /* XFRM_AE_RTHR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) + nla_total_size(4); /* XFRM_AE_ETHR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) static int build_aevent(struct sk_buff *skb, struct xfrm_state *x, const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) struct xfrm_aevent_id *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) nlh = nlmsg_put(skb, c->portid, c->seq, XFRM_MSG_NEWAE, sizeof(*id), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) id = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) memset(&id->sa_id, 0, sizeof(id->sa_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) memcpy(&id->sa_id.daddr, &x->id.daddr, sizeof(x->id.daddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) id->sa_id.spi = x->id.spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) id->sa_id.family = x->props.family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) id->sa_id.proto = x->id.proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) memcpy(&id->saddr, &x->props.saddr, sizeof(x->props.saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) id->reqid = x->props.reqid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) id->flags = c->data.aevent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) if (x->replay_esn) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) err = nla_put(skb, XFRMA_REPLAY_ESN_VAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) xfrm_replay_state_esn_len(x->replay_esn),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) x->replay_esn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) err = nla_put(skb, XFRMA_REPLAY_VAL, sizeof(x->replay),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) &x->replay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) goto out_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) err = nla_put_64bit(skb, XFRMA_LTIME_VAL, sizeof(x->curlft), &x->curlft,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) XFRMA_PAD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) goto out_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) if (id->flags & XFRM_AE_RTHR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) err = nla_put_u32(skb, XFRMA_REPLAY_THRESH, x->replay_maxdiff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) goto out_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) if (id->flags & XFRM_AE_ETHR) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) err = nla_put_u32(skb, XFRMA_ETIMER_THRESH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) x->replay_maxage * 10 / HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) goto out_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) err = xfrm_mark_put(skb, &x->mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) goto out_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) err = xfrm_if_id_put(skb, x->if_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) goto out_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) out_cancel:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) struct xfrm_state *x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) struct sk_buff *r_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) struct km_event c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) u32 mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) struct xfrm_mark m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) struct xfrm_aevent_id *p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) struct xfrm_usersa_id *id = &p->sa_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) mark = xfrm_mark_get(attrs, &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102) x = xfrm_state_lookup(net, mark, &id->daddr, id->spi, id->proto, id->family);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) if (x == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) return -ESRCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) r_skb = nlmsg_new(xfrm_aevent_msgsize(x), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) if (r_skb == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) * XXX: is this lock really needed - none of the other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) * gets lock (the concern is things getting updated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) * while we are still reading) - jhs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) spin_lock_bh(&x->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) c.data.aevent = p->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) c.seq = nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) c.portid = nlh->nlmsg_pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) err = build_aevent(r_skb, x, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) BUG_ON(err < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) err = nlmsg_unicast(net->xfrm.nlsk, r_skb, NETLINK_CB(skb).portid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) spin_unlock_bh(&x->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) struct xfrm_state *x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136) struct km_event c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) int err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) u32 mark = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) struct xfrm_mark m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140) struct xfrm_aevent_id *p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) struct nlattr *rp = attrs[XFRMA_REPLAY_VAL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) struct nlattr *re = attrs[XFRMA_REPLAY_ESN_VAL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) struct nlattr *lt = attrs[XFRMA_LTIME_VAL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) struct nlattr *et = attrs[XFRMA_ETIMER_THRESH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145) struct nlattr *rt = attrs[XFRMA_REPLAY_THRESH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147) if (!lt && !rp && !re && !et && !rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) /* pedantic mode - thou shalt sayeth replaceth */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) if (!(nlh->nlmsg_flags&NLM_F_REPLACE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) mark = xfrm_mark_get(attrs, &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) x = xfrm_state_lookup(net, mark, &p->sa_id.daddr, p->sa_id.spi, p->sa_id.proto, p->sa_id.family);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157) if (x == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) return -ESRCH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160) if (x->km.state != XFRM_STATE_VALID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) err = xfrm_replay_verify_len(x->replay_esn, re);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) spin_lock_bh(&x->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) xfrm_update_ae_params(x, attrs, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169) spin_unlock_bh(&x->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171) c.event = nlh->nlmsg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172) c.seq = nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173) c.portid = nlh->nlmsg_pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174) c.data.aevent = XFRM_AE_CU;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175) km_state_notify(x, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182) static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) struct km_event c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) u8 type = XFRM_POLICY_TYPE_MAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) err = copy_from_user_policy_type(&type, attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) err = xfrm_policy_flush(net, type, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) if (err == -ESRCH) /* empty table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201) c.data.type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) c.event = nlh->nlmsg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) c.seq = nlh->nlmsg_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204) c.portid = nlh->nlmsg_pid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205) c.net = net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) km_policy_notify(NULL, 0, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) struct xfrm_policy *xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215) struct xfrm_user_polexpire *up = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) struct xfrm_userpolicy_info *p = &up->pol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217) u8 type = XFRM_POLICY_TYPE_MAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) int err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) struct xfrm_mark m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) u32 if_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) err = copy_from_user_policy_type(&type, attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) err = verify_policy_dir(p->dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) if (attrs[XFRMA_IF_ID])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231) if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) xfrm_mark_get(attrs, &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235) if (p->index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236) xp = xfrm_policy_byid(net, &m, if_id, type, p->dir, p->index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) 0, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) struct nlattr *rt = attrs[XFRMA_SEC_CTX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240) struct xfrm_sec_ctx *ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) err = verify_sec_ctx_len(attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246) ctx = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247) if (rt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248) struct xfrm_user_sec_ctx *uctx = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250) err = security_xfrm_policy_alloc(&ctx, uctx, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254) xp = xfrm_policy_bysel_ctx(net, &m, if_id, type, p->dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255) &p->sel, ctx, 0, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256) security_xfrm_policy_free(ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258) if (xp == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261) if (unlikely(xp->walk.dead))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265) if (up->hard) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) xfrm_policy_delete(xp, p->dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267) xfrm_audit_policy_delete(xp, 1, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) km_policy_expired(xp, p->dir, up->hard, nlh->nlmsg_pid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) xfrm_pol_put(xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276) static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280) struct xfrm_state *x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282) struct xfrm_user_expire *ue = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283) struct xfrm_usersa_info *p = &ue->state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284) struct xfrm_mark m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285) u32 mark = xfrm_mark_get(attrs, &m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) x = xfrm_state_lookup(net, mark, &p->id.daddr, p->id.spi, p->id.proto, p->family);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289) err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) if (x == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293) spin_lock_bh(&x->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295) if (x->km.state != XFRM_STATE_VALID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297) km_state_expired(x, ue->hard, nlh->nlmsg_pid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) if (ue->hard) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) __xfrm_state_delete(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301) xfrm_audit_state_delete(x, 1, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305) spin_unlock_bh(&x->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306) xfrm_state_put(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310) static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314) struct xfrm_policy *xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315) struct xfrm_user_tmpl *ut;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) struct nlattr *rt = attrs[XFRMA_TMPL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) struct xfrm_mark mark;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320) struct xfrm_user_acquire *ua = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321) struct xfrm_state *x = xfrm_state_alloc(net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322) int err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) if (!x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325) goto nomem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) xfrm_mark_get(attrs, &mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329) err = verify_newpolicy_info(&ua->policy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331) goto free_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332) err = verify_sec_ctx_len(attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334) goto free_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) /* build an XP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337) xp = xfrm_policy_construct(net, &ua->policy, attrs, &err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338) if (!xp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339) goto free_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341) memcpy(&x->id, &ua->id, sizeof(ua->id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342) memcpy(&x->props.saddr, &ua->saddr, sizeof(ua->saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343) memcpy(&x->sel, &ua->sel, sizeof(ua->sel));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344) xp->mark.m = x->mark.m = mark.m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345) xp->mark.v = x->mark.v = mark.v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346) ut = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347) /* extract the templates and for each call km_key */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348) for (i = 0; i < xp->xfrm_nr; i++, ut++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349) struct xfrm_tmpl *t = &xp->xfrm_vec[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) memcpy(&x->id, &t->id, sizeof(x->id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351) x->props.mode = t->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352) x->props.reqid = t->reqid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353) x->props.family = ut->family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354) t->aalgos = ua->aalgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355) t->ealgos = ua->ealgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) t->calgos = ua->calgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357) err = km_query(x, t, xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361) xfrm_state_free(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) kfree(xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366) free_state:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367) xfrm_state_free(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368) nomem:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) #ifdef CONFIG_XFRM_MIGRATE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373) static int copy_from_user_migrate(struct xfrm_migrate *ma,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374) struct xfrm_kmaddress *k,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) struct nlattr **attrs, int *num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377) struct nlattr *rt = attrs[XFRMA_MIGRATE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378) struct xfrm_user_migrate *um;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) int i, num_migrate;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381) if (k != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) struct xfrm_user_kmaddress *uk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) uk = nla_data(attrs[XFRMA_KMADDRESS]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385) memcpy(&k->local, &uk->local, sizeof(k->local));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) memcpy(&k->remote, &uk->remote, sizeof(k->remote));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387) k->family = uk->family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) k->reserved = uk->reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391) um = nla_data(rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392) num_migrate = nla_len(rt) / sizeof(*um);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394) if (num_migrate <= 0 || num_migrate > XFRM_MAX_DEPTH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) for (i = 0; i < num_migrate; i++, um++, ma++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398) memcpy(&ma->old_daddr, &um->old_daddr, sizeof(ma->old_daddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399) memcpy(&ma->old_saddr, &um->old_saddr, sizeof(ma->old_saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) memcpy(&ma->new_daddr, &um->new_daddr, sizeof(ma->new_daddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401) memcpy(&ma->new_saddr, &um->new_saddr, sizeof(ma->new_saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403) ma->proto = um->proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404) ma->mode = um->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405) ma->reqid = um->reqid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407) ma->old_family = um->old_family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408) ma->new_family = um->new_family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411) *num = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415) static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) struct xfrm_userpolicy_id *pi = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) struct xfrm_migrate m[XFRM_MAX_DEPTH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420) struct xfrm_kmaddress km, *kmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421) u8 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423) int n = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425) struct xfrm_encap_tmpl *encap = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426) u32 if_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) if (attrs[XFRMA_MIGRATE] == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431) kmp = attrs[XFRMA_KMADDRESS] ? &km : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) err = copy_from_user_policy_type(&type, attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) err = copy_from_user_migrate((struct xfrm_migrate *)m, kmp, attrs, &n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) if (!n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444) if (attrs[XFRMA_ENCAP]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445) encap = kmemdup(nla_data(attrs[XFRMA_ENCAP]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) sizeof(*encap), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) if (!encap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451) if (attrs[XFRMA_IF_ID])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452) if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454) err = xfrm_migrate(&pi->sel, pi->dir, type, m, n, kmp, net, encap, if_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456) kfree(encap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462) struct nlattr **attrs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464) return -ENOPROTOOPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) #ifdef CONFIG_XFRM_MIGRATE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469) static int copy_to_user_migrate(const struct xfrm_migrate *m, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) struct xfrm_user_migrate um;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) memset(&um, 0, sizeof(um));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474) um.proto = m->proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) um.mode = m->mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476) um.reqid = m->reqid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477) um.old_family = m->old_family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478) memcpy(&um.old_daddr, &m->old_daddr, sizeof(um.old_daddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479) memcpy(&um.old_saddr, &m->old_saddr, sizeof(um.old_saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480) um.new_family = m->new_family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481) memcpy(&um.new_daddr, &m->new_daddr, sizeof(um.new_daddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482) memcpy(&um.new_saddr, &m->new_saddr, sizeof(um.new_saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484) return nla_put(skb, XFRMA_MIGRATE, sizeof(um), &um);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487) static int copy_to_user_kmaddress(const struct xfrm_kmaddress *k, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489) struct xfrm_user_kmaddress uk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491) memset(&uk, 0, sizeof(uk));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492) uk.family = k->family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493) uk.reserved = k->reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494) memcpy(&uk.local, &k->local, sizeof(uk.local));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495) memcpy(&uk.remote, &k->remote, sizeof(uk.remote));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497) return nla_put(skb, XFRMA_KMADDRESS, sizeof(uk), &uk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) static inline unsigned int xfrm_migrate_msgsize(int num_migrate, int with_kma,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) int with_encp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503) return NLMSG_ALIGN(sizeof(struct xfrm_userpolicy_id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504) + (with_kma ? nla_total_size(sizeof(struct xfrm_kmaddress)) : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505) + (with_encp ? nla_total_size(sizeof(struct xfrm_encap_tmpl)) : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506) + nla_total_size(sizeof(struct xfrm_user_migrate) * num_migrate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507) + userpolicy_type_attrsize();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510) static int build_migrate(struct sk_buff *skb, const struct xfrm_migrate *m,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511) int num_migrate, const struct xfrm_kmaddress *k,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512) const struct xfrm_selector *sel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513) const struct xfrm_encap_tmpl *encap, u8 dir, u8 type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515) const struct xfrm_migrate *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516) struct xfrm_userpolicy_id *pol_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518) int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520) nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_MIGRATE, sizeof(*pol_id), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524) pol_id = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525) /* copy data from selector, dir, and type to the pol_id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) memset(pol_id, 0, sizeof(*pol_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527) memcpy(&pol_id->sel, sel, sizeof(pol_id->sel));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528) pol_id->dir = dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530) if (k != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531) err = copy_to_user_kmaddress(k, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) goto out_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535) if (encap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) err = nla_put(skb, XFRMA_ENCAP, sizeof(*encap), encap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538) goto out_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540) err = copy_to_user_policy_type(type, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542) goto out_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543) for (i = 0, mp = m ; i < num_migrate; i++, mp++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) err = copy_to_user_migrate(mp, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546) goto out_cancel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552) out_cancel:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557) static int xfrm_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558) const struct xfrm_migrate *m, int num_migrate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559) const struct xfrm_kmaddress *k,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) const struct xfrm_encap_tmpl *encap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562) struct net *net = &init_net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566) skb = nlmsg_new(xfrm_migrate_msgsize(num_migrate, !!k, !!encap),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571) /* build migrate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572) err = build_migrate(skb, m, num_migrate, k, sel, encap, dir, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573) BUG_ON(err < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2575) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_MIGRATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2577) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2578) static int xfrm_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2579) const struct xfrm_migrate *m, int num_migrate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2580) const struct xfrm_kmaddress *k,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2581) const struct xfrm_encap_tmpl *encap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2582) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2583) return -ENOPROTOOPT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2584) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2585) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2587) #define XMSGSIZE(type) sizeof(struct type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2589) const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2590) [XFRM_MSG_NEWSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2591) [XFRM_MSG_DELSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2592) [XFRM_MSG_GETSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2593) [XFRM_MSG_NEWPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2594) [XFRM_MSG_DELPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2595) [XFRM_MSG_GETPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2596) [XFRM_MSG_ALLOCSPI - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userspi_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2597) [XFRM_MSG_ACQUIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_acquire),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2598) [XFRM_MSG_EXPIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_expire),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2599) [XFRM_MSG_UPDPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2600) [XFRM_MSG_UPDSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2601) [XFRM_MSG_POLEXPIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_polexpire),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2602) [XFRM_MSG_FLUSHSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_flush),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2603) [XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2604) [XFRM_MSG_NEWAE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_aevent_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2605) [XFRM_MSG_GETAE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_aevent_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2606) [XFRM_MSG_REPORT - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_report),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2607) [XFRM_MSG_MIGRATE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2608) [XFRM_MSG_GETSADINFO - XFRM_MSG_BASE] = sizeof(u32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2609) [XFRM_MSG_NEWSPDINFO - XFRM_MSG_BASE] = sizeof(u32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2610) [XFRM_MSG_GETSPDINFO - XFRM_MSG_BASE] = sizeof(u32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2611) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2612) EXPORT_SYMBOL_GPL(xfrm_msg_min);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2614) #undef XMSGSIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2616) const struct nla_policy xfrma_policy[XFRMA_MAX+1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2617) [XFRMA_SA] = { .len = sizeof(struct xfrm_usersa_info)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2618) [XFRMA_POLICY] = { .len = sizeof(struct xfrm_userpolicy_info)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2619) [XFRMA_LASTUSED] = { .type = NLA_U64},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2620) [XFRMA_ALG_AUTH_TRUNC] = { .len = sizeof(struct xfrm_algo_auth)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2621) [XFRMA_ALG_AEAD] = { .len = sizeof(struct xfrm_algo_aead) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2622) [XFRMA_ALG_AUTH] = { .len = sizeof(struct xfrm_algo) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2623) [XFRMA_ALG_CRYPT] = { .len = sizeof(struct xfrm_algo) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2624) [XFRMA_ALG_COMP] = { .len = sizeof(struct xfrm_algo) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2625) [XFRMA_ENCAP] = { .len = sizeof(struct xfrm_encap_tmpl) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2626) [XFRMA_TMPL] = { .len = sizeof(struct xfrm_user_tmpl) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2627) [XFRMA_SEC_CTX] = { .len = sizeof(struct xfrm_sec_ctx) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2628) [XFRMA_LTIME_VAL] = { .len = sizeof(struct xfrm_lifetime_cur) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2629) [XFRMA_REPLAY_VAL] = { .len = sizeof(struct xfrm_replay_state) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2630) [XFRMA_REPLAY_THRESH] = { .type = NLA_U32 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2631) [XFRMA_ETIMER_THRESH] = { .type = NLA_U32 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2632) [XFRMA_SRCADDR] = { .len = sizeof(xfrm_address_t) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2633) [XFRMA_COADDR] = { .len = sizeof(xfrm_address_t) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2634) [XFRMA_POLICY_TYPE] = { .len = sizeof(struct xfrm_userpolicy_type)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2635) [XFRMA_MIGRATE] = { .len = sizeof(struct xfrm_user_migrate) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2636) [XFRMA_KMADDRESS] = { .len = sizeof(struct xfrm_user_kmaddress) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2637) [XFRMA_MARK] = { .len = sizeof(struct xfrm_mark) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2638) [XFRMA_TFCPAD] = { .type = NLA_U32 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2639) [XFRMA_REPLAY_ESN_VAL] = { .len = sizeof(struct xfrm_replay_state_esn) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2640) [XFRMA_SA_EXTRA_FLAGS] = { .type = NLA_U32 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2641) [XFRMA_PROTO] = { .type = NLA_U8 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2642) [XFRMA_ADDRESS_FILTER] = { .len = sizeof(struct xfrm_address_filter) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2643) [XFRMA_OFFLOAD_DEV] = { .len = sizeof(struct xfrm_user_offload) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2644) [XFRMA_SET_MARK] = { .type = NLA_U32 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2645) [XFRMA_SET_MARK_MASK] = { .type = NLA_U32 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2646) [XFRMA_IF_ID] = { .type = NLA_U32 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2647) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2648) EXPORT_SYMBOL_GPL(xfrma_policy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2650) static const struct nla_policy xfrma_spd_policy[XFRMA_SPD_MAX+1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2651) [XFRMA_SPD_IPV4_HTHRESH] = { .len = sizeof(struct xfrmu_spdhthresh) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2652) [XFRMA_SPD_IPV6_HTHRESH] = { .len = sizeof(struct xfrmu_spdhthresh) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2653) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2655) static const struct xfrm_link {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2656) int (*doit)(struct sk_buff *, struct nlmsghdr *, struct nlattr **);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2657) int (*start)(struct netlink_callback *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2658) int (*dump)(struct sk_buff *, struct netlink_callback *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2659) int (*done)(struct netlink_callback *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2660) const struct nla_policy *nla_pol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2661) int nla_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2662) } xfrm_dispatch[XFRM_NR_MSGTYPES] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2663) [XFRM_MSG_NEWSA - XFRM_MSG_BASE] = { .doit = xfrm_add_sa },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2664) [XFRM_MSG_DELSA - XFRM_MSG_BASE] = { .doit = xfrm_del_sa },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2665) [XFRM_MSG_GETSA - XFRM_MSG_BASE] = { .doit = xfrm_get_sa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2666) .dump = xfrm_dump_sa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2667) .done = xfrm_dump_sa_done },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2668) [XFRM_MSG_NEWPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_add_policy },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2669) [XFRM_MSG_DELPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2670) [XFRM_MSG_GETPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2671) .start = xfrm_dump_policy_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2672) .dump = xfrm_dump_policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2673) .done = xfrm_dump_policy_done },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2674) [XFRM_MSG_ALLOCSPI - XFRM_MSG_BASE] = { .doit = xfrm_alloc_userspi },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2675) [XFRM_MSG_ACQUIRE - XFRM_MSG_BASE] = { .doit = xfrm_add_acquire },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2676) [XFRM_MSG_EXPIRE - XFRM_MSG_BASE] = { .doit = xfrm_add_sa_expire },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2677) [XFRM_MSG_UPDPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_add_policy },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2678) [XFRM_MSG_UPDSA - XFRM_MSG_BASE] = { .doit = xfrm_add_sa },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2679) [XFRM_MSG_POLEXPIRE - XFRM_MSG_BASE] = { .doit = xfrm_add_pol_expire},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2680) [XFRM_MSG_FLUSHSA - XFRM_MSG_BASE] = { .doit = xfrm_flush_sa },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2681) [XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_flush_policy },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2682) [XFRM_MSG_NEWAE - XFRM_MSG_BASE] = { .doit = xfrm_new_ae },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2683) [XFRM_MSG_GETAE - XFRM_MSG_BASE] = { .doit = xfrm_get_ae },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2684) [XFRM_MSG_MIGRATE - XFRM_MSG_BASE] = { .doit = xfrm_do_migrate },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2685) [XFRM_MSG_GETSADINFO - XFRM_MSG_BASE] = { .doit = xfrm_get_sadinfo },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2686) [XFRM_MSG_NEWSPDINFO - XFRM_MSG_BASE] = { .doit = xfrm_set_spdinfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2687) .nla_pol = xfrma_spd_policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2688) .nla_max = XFRMA_SPD_MAX },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2689) [XFRM_MSG_GETSPDINFO - XFRM_MSG_BASE] = { .doit = xfrm_get_spdinfo },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2690) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2692) static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2693) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2694) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2695) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2696) struct nlattr *attrs[XFRMA_MAX+1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2697) const struct xfrm_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2698) struct nlmsghdr *nlh64 = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2699) int type, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2701) type = nlh->nlmsg_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2702) if (type > XFRM_MSG_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2703) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2705) type -= XFRM_MSG_BASE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2706) link = &xfrm_dispatch[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2708) /* All operations require privileges, even GET */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2709) if (!netlink_net_capable(skb, CAP_NET_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2710) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2712) /* Use the 64-bit / untranslated format on Android, even for compat */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2713) if (!IS_ENABLED(CONFIG_ANDROID) || IS_ENABLED(CONFIG_XFRM_USER_COMPAT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2714) if (in_compat_syscall()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2715) struct xfrm_translator *xtr = xfrm_get_translator();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2717) if (!xtr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2718) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2720) nlh64 = xtr->rcv_msg_compat(nlh, link->nla_max,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2721) link->nla_pol, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2722) xfrm_put_translator(xtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2723) if (IS_ERR(nlh64))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2724) return PTR_ERR(nlh64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2725) if (nlh64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2726) nlh = nlh64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2728) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2730) if ((type == (XFRM_MSG_GETSA - XFRM_MSG_BASE) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2731) type == (XFRM_MSG_GETPOLICY - XFRM_MSG_BASE)) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2732) (nlh->nlmsg_flags & NLM_F_DUMP)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2733) struct netlink_dump_control c = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2734) .start = link->start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2735) .dump = link->dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2736) .done = link->done,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2737) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2738)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2739) if (link->dump == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2740) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2741) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2742) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2744) err = netlink_dump_start(net->xfrm.nlsk, skb, nlh, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2745) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2746) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2748) err = nlmsg_parse_deprecated(nlh, xfrm_msg_min[type], attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2749) link->nla_max ? : XFRMA_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2750) link->nla_pol ? : xfrma_policy, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2751) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2752) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2754) if (link->doit == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2755) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2756) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2757) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2759) err = link->doit(skb, nlh, attrs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2761) /* We need to free skb allocated in xfrm_alloc_compat() before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2762) * returning from this function, because consume_skb() won't take
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2763) * care of frag_list since netlink destructor sets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2764) * sbk->head to NULL. (see netlink_skb_destructor())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2765) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2766) if (skb_has_frag_list(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2767) kfree_skb(skb_shinfo(skb)->frag_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2768) skb_shinfo(skb)->frag_list = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2769) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2771) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2772) kvfree(nlh64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2773) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2774) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2776) static void xfrm_netlink_rcv(struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2777) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2778) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2780) mutex_lock(&net->xfrm.xfrm_cfg_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2781) netlink_rcv_skb(skb, &xfrm_user_rcv_msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2782) mutex_unlock(&net->xfrm.xfrm_cfg_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2783) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2785) static inline unsigned int xfrm_expire_msgsize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2786) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2787) return NLMSG_ALIGN(sizeof(struct xfrm_user_expire))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2788) + nla_total_size(sizeof(struct xfrm_mark));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2791) static int build_expire(struct sk_buff *skb, struct xfrm_state *x, const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2792) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2793) struct xfrm_user_expire *ue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2794) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2795) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2797) nlh = nlmsg_put(skb, c->portid, 0, XFRM_MSG_EXPIRE, sizeof(*ue), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2798) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2799) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2801) ue = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2802) copy_to_user_state(x, &ue->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2803) ue->hard = (c->data.hard != 0) ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2804) /* clear the padding bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2805) memset(&ue->hard + 1, 0, sizeof(*ue) - offsetofend(typeof(*ue), hard));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2807) err = xfrm_mark_put(skb, &x->mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2808) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2809) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2811) err = xfrm_if_id_put(skb, x->if_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2812) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2813) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2815) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2816) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2817) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2819) static int xfrm_exp_state_notify(struct xfrm_state *x, const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2820) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2821) struct net *net = xs_net(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2822) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2824) skb = nlmsg_new(xfrm_expire_msgsize(), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2825) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2826) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2828) if (build_expire(skb, x, c) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2829) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2830) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2831) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2833) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_EXPIRE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2834) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2836) static int xfrm_aevent_state_notify(struct xfrm_state *x, const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2837) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2838) struct net *net = xs_net(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2839) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2840) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2842) skb = nlmsg_new(xfrm_aevent_msgsize(x), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2843) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2844) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2846) err = build_aevent(skb, x, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2847) BUG_ON(err < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2849) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_AEVENTS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2852) static int xfrm_notify_sa_flush(const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2853) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2854) struct net *net = c->net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2855) struct xfrm_usersa_flush *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2856) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2857) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2858) int len = NLMSG_ALIGN(sizeof(struct xfrm_usersa_flush));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2860) skb = nlmsg_new(len, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2861) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2862) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2864) nlh = nlmsg_put(skb, c->portid, c->seq, XFRM_MSG_FLUSHSA, sizeof(*p), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2865) if (nlh == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2866) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2867) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2868) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2870) p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2871) p->proto = c->data.proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2873) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2875) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_SA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2876) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2878) static inline unsigned int xfrm_sa_len(struct xfrm_state *x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2879) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2880) unsigned int l = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2881) if (x->aead)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2882) l += nla_total_size(aead_len(x->aead));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2883) if (x->aalg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2884) l += nla_total_size(sizeof(struct xfrm_algo) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2885) (x->aalg->alg_key_len + 7) / 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2886) l += nla_total_size(xfrm_alg_auth_len(x->aalg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2887) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2888) if (x->ealg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2889) l += nla_total_size(xfrm_alg_len(x->ealg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2890) if (x->calg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2891) l += nla_total_size(sizeof(*x->calg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2892) if (x->encap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2893) l += nla_total_size(sizeof(*x->encap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2894) if (x->tfcpad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2895) l += nla_total_size(sizeof(x->tfcpad));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2896) if (x->replay_esn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2897) l += nla_total_size(xfrm_replay_state_esn_len(x->replay_esn));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2898) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2899) l += nla_total_size(sizeof(struct xfrm_replay_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2900) if (x->security)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2901) l += nla_total_size(sizeof(struct xfrm_user_sec_ctx) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2902) x->security->ctx_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2903) if (x->coaddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2904) l += nla_total_size(sizeof(*x->coaddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2905) if (x->props.extra_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2906) l += nla_total_size(sizeof(x->props.extra_flags));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2907) if (x->xso.dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2908) l += nla_total_size(sizeof(struct xfrm_user_offload));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2909) if (x->props.smark.v | x->props.smark.m) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2910) l += nla_total_size(sizeof(x->props.smark.v));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2911) l += nla_total_size(sizeof(x->props.smark.m));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2912) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2913) if (x->if_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2914) l += nla_total_size(sizeof(x->if_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2916) /* Must count x->lastused as it may become non-zero behind our back. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2917) l += nla_total_size_64bit(sizeof(u64));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2918)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2919) return l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2920) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2922) static int xfrm_notify_sa(struct xfrm_state *x, const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2923) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2924) struct net *net = xs_net(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2925) struct xfrm_usersa_info *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2926) struct xfrm_usersa_id *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2927) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2928) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2929) unsigned int len = xfrm_sa_len(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2930) unsigned int headlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2931) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2933) headlen = sizeof(*p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2934) if (c->event == XFRM_MSG_DELSA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2935) len += nla_total_size(headlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2936) headlen = sizeof(*id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2937) len += nla_total_size(sizeof(struct xfrm_mark));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2938) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2939) len += NLMSG_ALIGN(headlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2941) skb = nlmsg_new(len, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2942) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2943) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2945) nlh = nlmsg_put(skb, c->portid, c->seq, c->event, headlen, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2946) err = -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2947) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2948) goto out_free_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2950) p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2951) if (c->event == XFRM_MSG_DELSA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2952) struct nlattr *attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2953)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2954) id = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2955) memset(id, 0, sizeof(*id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2956) memcpy(&id->daddr, &x->id.daddr, sizeof(id->daddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2957) id->spi = x->id.spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2958) id->family = x->props.family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2959) id->proto = x->id.proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2961) attr = nla_reserve(skb, XFRMA_SA, sizeof(*p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2962) err = -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2963) if (attr == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2964) goto out_free_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2965)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2966) p = nla_data(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2967) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2968) err = copy_to_user_state_extra(x, p, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2969) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2970) goto out_free_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2972) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2974) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_SA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2976) out_free_skb:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2977) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2978) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2979) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2981) static int xfrm_send_state_notify(struct xfrm_state *x, const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2982) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2984) switch (c->event) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2985) case XFRM_MSG_EXPIRE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2986) return xfrm_exp_state_notify(x, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2987) case XFRM_MSG_NEWAE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2988) return xfrm_aevent_state_notify(x, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2989) case XFRM_MSG_DELSA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2990) case XFRM_MSG_UPDSA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2991) case XFRM_MSG_NEWSA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2992) return xfrm_notify_sa(x, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2993) case XFRM_MSG_FLUSHSA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2994) return xfrm_notify_sa_flush(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2995) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2996) printk(KERN_NOTICE "xfrm_user: Unknown SA event %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2997) c->event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2998) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2999) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3001) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3003) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3005) static inline unsigned int xfrm_acquire_msgsize(struct xfrm_state *x,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3006) struct xfrm_policy *xp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3007) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3008) return NLMSG_ALIGN(sizeof(struct xfrm_user_acquire))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3009) + nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3010) + nla_total_size(sizeof(struct xfrm_mark))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3011) + nla_total_size(xfrm_user_sec_ctx_size(x->security))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3012) + userpolicy_type_attrsize();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3013) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3015) static int build_acquire(struct sk_buff *skb, struct xfrm_state *x,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3016) struct xfrm_tmpl *xt, struct xfrm_policy *xp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3017) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3018) __u32 seq = xfrm_get_acqseq();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3019) struct xfrm_user_acquire *ua;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3020) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3021) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3023) nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_ACQUIRE, sizeof(*ua), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3024) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3025) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3027) ua = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3028) memcpy(&ua->id, &x->id, sizeof(ua->id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3029) memcpy(&ua->saddr, &x->props.saddr, sizeof(ua->saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3030) memcpy(&ua->sel, &x->sel, sizeof(ua->sel));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3031) copy_to_user_policy(xp, &ua->policy, XFRM_POLICY_OUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3032) ua->aalgos = xt->aalgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3033) ua->ealgos = xt->ealgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3034) ua->calgos = xt->calgos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3035) ua->seq = x->km.seq = seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3037) err = copy_to_user_tmpl(xp, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3038) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3039) err = copy_to_user_state_sec_ctx(x, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3040) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3041) err = copy_to_user_policy_type(xp->type, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3042) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3043) err = xfrm_mark_put(skb, &xp->mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3044) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3045) err = xfrm_if_id_put(skb, xp->if_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3046) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3047) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3048) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3049) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3050)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3051) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3052) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3053) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3055) static int xfrm_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *xt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3056) struct xfrm_policy *xp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3057) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3058) struct net *net = xs_net(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3059) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3060) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3061)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3062) skb = nlmsg_new(xfrm_acquire_msgsize(x, xp), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3063) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3064) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3066) err = build_acquire(skb, x, xt, xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3067) BUG_ON(err < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3069) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_ACQUIRE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3070) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3071)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3072) /* User gives us xfrm_user_policy_info followed by an array of 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3073) * or more templates.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3074) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3075) static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3076) u8 *data, int len, int *dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3077) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3078) struct net *net = sock_net(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3079) struct xfrm_userpolicy_info *p = (struct xfrm_userpolicy_info *)data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3080) struct xfrm_user_tmpl *ut = (struct xfrm_user_tmpl *) (p + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3081) struct xfrm_policy *xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3082) int nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3084) switch (sk->sk_family) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3085) case AF_INET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3086) if (opt != IP_XFRM_POLICY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3087) *dir = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3088) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3089) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3090) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3091) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3092) case AF_INET6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3093) if (opt != IPV6_XFRM_POLICY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3094) *dir = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3095) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3096) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3097) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3098) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3099) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3100) *dir = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3101) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3104) *dir = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3106) if (len < sizeof(*p) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3107) verify_newpolicy_info(p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3108) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3110) nr = ((len - sizeof(*p)) / sizeof(*ut));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3111) if (validate_tmpl(nr, ut, p->sel.family))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3112) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3114) if (p->dir > XFRM_POLICY_OUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3115) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3117) xp = xfrm_policy_alloc(net, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3118) if (xp == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3119) *dir = -ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3120) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3123) copy_from_user_policy(xp, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3124) xp->type = XFRM_POLICY_TYPE_MAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3125) copy_templates(xp, ut, nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3127) *dir = p->dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3129) return xp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3132) static inline unsigned int xfrm_polexpire_msgsize(struct xfrm_policy *xp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3134) return NLMSG_ALIGN(sizeof(struct xfrm_user_polexpire))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3135) + nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3136) + nla_total_size(xfrm_user_sec_ctx_size(xp->security))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3137) + nla_total_size(sizeof(struct xfrm_mark))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3138) + userpolicy_type_attrsize();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3141) static int build_polexpire(struct sk_buff *skb, struct xfrm_policy *xp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3142) int dir, const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3144) struct xfrm_user_polexpire *upe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3145) int hard = c->data.hard;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3146) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3147) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3149) nlh = nlmsg_put(skb, c->portid, 0, XFRM_MSG_POLEXPIRE, sizeof(*upe), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3150) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3151) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3153) upe = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3154) copy_to_user_policy(xp, &upe->pol, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3155) err = copy_to_user_tmpl(xp, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3156) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3157) err = copy_to_user_sec_ctx(xp, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3158) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3159) err = copy_to_user_policy_type(xp->type, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3160) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3161) err = xfrm_mark_put(skb, &xp->mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3162) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3163) err = xfrm_if_id_put(skb, xp->if_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3164) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3165) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3166) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3168) upe->hard = !!hard;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3170) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3171) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3174) static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3176) struct net *net = xp_net(xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3177) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3178) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3180) skb = nlmsg_new(xfrm_polexpire_msgsize(xp), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3181) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3182) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3184) err = build_polexpire(skb, xp, dir, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3185) BUG_ON(err < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3187) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_EXPIRE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3190) static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3192) unsigned int len = nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3193) struct net *net = xp_net(xp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3194) struct xfrm_userpolicy_info *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3195) struct xfrm_userpolicy_id *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3196) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3197) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3198) unsigned int headlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3199) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3201) headlen = sizeof(*p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3202) if (c->event == XFRM_MSG_DELPOLICY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3203) len += nla_total_size(headlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3204) headlen = sizeof(*id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3206) len += userpolicy_type_attrsize();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3207) len += nla_total_size(sizeof(struct xfrm_mark));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3208) len += NLMSG_ALIGN(headlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3210) skb = nlmsg_new(len, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3211) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3212) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3214) nlh = nlmsg_put(skb, c->portid, c->seq, c->event, headlen, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3215) err = -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3216) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3217) goto out_free_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3219) p = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3220) if (c->event == XFRM_MSG_DELPOLICY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3221) struct nlattr *attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3223) id = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3224) memset(id, 0, sizeof(*id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3225) id->dir = dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3226) if (c->data.byid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3227) id->index = xp->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3228) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3229) memcpy(&id->sel, &xp->selector, sizeof(id->sel));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3231) attr = nla_reserve(skb, XFRMA_POLICY, sizeof(*p));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3232) err = -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3233) if (attr == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3234) goto out_free_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3236) p = nla_data(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3239) copy_to_user_policy(xp, p, dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3240) err = copy_to_user_tmpl(xp, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3241) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3242) err = copy_to_user_policy_type(xp->type, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3243) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3244) err = xfrm_mark_put(skb, &xp->mark);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3245) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3246) err = xfrm_if_id_put(skb, xp->if_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3247) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3248) goto out_free_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3250) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3252) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_POLICY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3254) out_free_skb:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3255) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3256) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3259) static int xfrm_notify_policy_flush(const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3261) struct net *net = c->net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3262) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3263) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3264) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3266) skb = nlmsg_new(userpolicy_type_attrsize(), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3267) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3268) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3270) nlh = nlmsg_put(skb, c->portid, c->seq, XFRM_MSG_FLUSHPOLICY, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3271) err = -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3272) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3273) goto out_free_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3274) err = copy_to_user_policy_type(c->data.type, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3275) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3276) goto out_free_skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3278) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3280) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_POLICY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3282) out_free_skb:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3283) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3284) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3287) static int xfrm_send_policy_notify(struct xfrm_policy *xp, int dir, const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3290) switch (c->event) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3291) case XFRM_MSG_NEWPOLICY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3292) case XFRM_MSG_UPDPOLICY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3293) case XFRM_MSG_DELPOLICY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3294) return xfrm_notify_policy(xp, dir, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3295) case XFRM_MSG_FLUSHPOLICY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3296) return xfrm_notify_policy_flush(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3297) case XFRM_MSG_POLEXPIRE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3298) return xfrm_exp_policy_notify(xp, dir, c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3299) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3300) printk(KERN_NOTICE "xfrm_user: Unknown Policy event %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3301) c->event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3304) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3308) static inline unsigned int xfrm_report_msgsize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3309) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3310) return NLMSG_ALIGN(sizeof(struct xfrm_user_report));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3313) static int build_report(struct sk_buff *skb, u8 proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3314) struct xfrm_selector *sel, xfrm_address_t *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3315) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3316) struct xfrm_user_report *ur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3317) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3319) nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_REPORT, sizeof(*ur), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3320) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3321) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3323) ur = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3324) ur->proto = proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3325) memcpy(&ur->sel, sel, sizeof(ur->sel));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3327) if (addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3328) int err = nla_put(skb, XFRMA_COADDR, sizeof(*addr), addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3329) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3330) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3331) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3334) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3335) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3338) static int xfrm_send_report(struct net *net, u8 proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3339) struct xfrm_selector *sel, xfrm_address_t *addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3341) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3342) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3344) skb = nlmsg_new(xfrm_report_msgsize(), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3345) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3346) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3348) err = build_report(skb, proto, sel, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3349) BUG_ON(err < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3351) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_REPORT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3354) static inline unsigned int xfrm_mapping_msgsize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3355) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3356) return NLMSG_ALIGN(sizeof(struct xfrm_user_mapping));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3359) static int build_mapping(struct sk_buff *skb, struct xfrm_state *x,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3360) xfrm_address_t *new_saddr, __be16 new_sport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3362) struct xfrm_user_mapping *um;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3363) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3365) nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_MAPPING, sizeof(*um), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3366) if (nlh == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3367) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3369) um = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3371) memcpy(&um->id.daddr, &x->id.daddr, sizeof(um->id.daddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3372) um->id.spi = x->id.spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3373) um->id.family = x->props.family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3374) um->id.proto = x->id.proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3375) memcpy(&um->new_saddr, new_saddr, sizeof(um->new_saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3376) memcpy(&um->old_saddr, &x->props.saddr, sizeof(um->old_saddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3377) um->new_sport = new_sport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3378) um->old_sport = x->encap->encap_sport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3379) um->reqid = x->props.reqid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3381) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3382) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3385) static int xfrm_send_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3386) __be16 sport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3387) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3388) struct net *net = xs_net(x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3389) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3390) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3392) if (x->id.proto != IPPROTO_ESP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3393) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3395) if (!x->encap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3396) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3398) skb = nlmsg_new(xfrm_mapping_msgsize(), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3399) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3400) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3402) err = build_mapping(skb, x, ipaddr, sport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3403) BUG_ON(err < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3405) return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_MAPPING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3408) static bool xfrm_is_alive(const struct km_event *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3409) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3410) return (bool)xfrm_acquire_is_on(c->net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3413) static struct xfrm_mgr netlink_mgr = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3414) .notify = xfrm_send_state_notify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3415) .acquire = xfrm_send_acquire,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3416) .compile_policy = xfrm_compile_policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3417) .notify_policy = xfrm_send_policy_notify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3418) .report = xfrm_send_report,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3419) .migrate = xfrm_send_migrate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3420) .new_mapping = xfrm_send_mapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3421) .is_alive = xfrm_is_alive,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3422) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3424) static int __net_init xfrm_user_net_init(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3425) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3426) struct sock *nlsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3427) struct netlink_kernel_cfg cfg = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3428) .groups = XFRMNLGRP_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3429) .input = xfrm_netlink_rcv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3430) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3432) nlsk = netlink_kernel_create(net, NETLINK_XFRM, &cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3433) if (nlsk == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3434) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3435) net->xfrm.nlsk_stash = nlsk; /* Don't set to NULL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3436) rcu_assign_pointer(net->xfrm.nlsk, nlsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3437) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3440) static void __net_exit xfrm_user_net_exit(struct list_head *net_exit_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3441) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3442) struct net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3443) list_for_each_entry(net, net_exit_list, exit_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3444) RCU_INIT_POINTER(net->xfrm.nlsk, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3445) synchronize_net();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3446) list_for_each_entry(net, net_exit_list, exit_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3447) netlink_kernel_release(net->xfrm.nlsk_stash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3450) static struct pernet_operations xfrm_user_net_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3451) .init = xfrm_user_net_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3452) .exit_batch = xfrm_user_net_exit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3453) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3455) static int __init xfrm_user_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3456) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3457) int rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3459) printk(KERN_INFO "Initializing XFRM netlink socket\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3461) rv = register_pernet_subsys(&xfrm_user_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3462) if (rv < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3463) return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3464) rv = xfrm_register_km(&netlink_mgr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3465) if (rv < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3466) unregister_pernet_subsys(&xfrm_user_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3467) return rv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3468) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3470) static void __exit xfrm_user_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3471) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3472) xfrm_unregister_km(&netlink_mgr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3473) unregister_pernet_subsys(&xfrm_user_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3474) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3476) module_init(xfrm_user_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3477) module_exit(xfrm_user_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3478) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3479) MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_XFRM);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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