^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* SCTP kernel implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * (C) Copyright Red Hat Inc. 2017
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * This file is part of the SCTP kernel implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * These functions implement sctp diag support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Please send any bug reports or fixes you make to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * email addresched(es):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * lksctp developers <linux-sctp@vger.kernel.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Written or modified by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Xin Long <lucien.xin@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/inet_diag.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/sock_diag.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <net/sctp/sctp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static void sctp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) void *info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* define some functions to make asoc/ep fill look clean */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static void inet_diag_msg_sctpasoc_fill(struct inet_diag_msg *r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct sock *sk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct sctp_association *asoc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) union sctp_addr laddr, paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct dst_entry *dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct timer_list *t3_rtx = &asoc->peer.primary_path->T3_rtx_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) laddr = list_entry(asoc->base.bind_addr.address_list.next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct sctp_sockaddr_entry, list)->a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) paddr = asoc->peer.primary_path->ipaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) dst = asoc->peer.primary_path->dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) r->idiag_family = sk->sk_family;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) r->id.idiag_sport = htons(asoc->base.bind_addr.port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) r->id.idiag_dport = htons(asoc->peer.port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) r->id.idiag_if = dst ? dst->dev->ifindex : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) sock_diag_save_cookie(sk, r->id.idiag_cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #if IS_ENABLED(CONFIG_IPV6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (sk->sk_family == AF_INET6) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) *(struct in6_addr *)r->id.idiag_src = laddr.v6.sin6_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) *(struct in6_addr *)r->id.idiag_dst = paddr.v6.sin6_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) memset(&r->id.idiag_src, 0, sizeof(r->id.idiag_src));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) memset(&r->id.idiag_dst, 0, sizeof(r->id.idiag_dst));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) r->id.idiag_src[0] = laddr.v4.sin_addr.s_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) r->id.idiag_dst[0] = paddr.v4.sin_addr.s_addr;
^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) r->idiag_state = asoc->state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (timer_pending(t3_rtx)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) r->idiag_timer = SCTP_EVENT_TIMEOUT_T3_RTX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) r->idiag_retrans = asoc->rtx_data_chunks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) r->idiag_expires = jiffies_to_msecs(t3_rtx->expires - jiffies);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static int inet_diag_msg_sctpladdrs_fill(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct list_head *address_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct sctp_sockaddr_entry *laddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int addrlen = sizeof(struct sockaddr_storage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int addrcnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct nlattr *attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) void *info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) list_for_each_entry_rcu(laddr, address_list, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) addrcnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) attr = nla_reserve(skb, INET_DIAG_LOCALS, addrlen * addrcnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (!attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) info = nla_data(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) list_for_each_entry_rcu(laddr, address_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) memcpy(info, &laddr->a, sizeof(laddr->a));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) memset(info + sizeof(laddr->a), 0, addrlen - sizeof(laddr->a));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) info += addrlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static int inet_diag_msg_sctpaddrs_fill(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct sctp_association *asoc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) int addrlen = sizeof(struct sockaddr_storage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct sctp_transport *from;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct nlattr *attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) void *info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) attr = nla_reserve(skb, INET_DIAG_PEERS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) addrlen * asoc->peer.transport_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (!attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) info = nla_data(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) list_for_each_entry(from, &asoc->peer.transport_addr_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) transports) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) memcpy(info, &from->ipaddr, sizeof(from->ipaddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) memset(info + sizeof(from->ipaddr), 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) addrlen - sizeof(from->ipaddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) info += addrlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /* sctp asoc/ep fill*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static int inet_sctp_diag_fill(struct sock *sk, struct sctp_association *asoc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) const struct inet_diag_req_v2 *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct user_namespace *user_ns,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int portid, u32 seq, u16 nlmsg_flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) const struct nlmsghdr *unlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) bool net_admin)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct sctp_endpoint *ep = sctp_sk(sk)->ep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct list_head *addr_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct inet_diag_msg *r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int ext = req->idiag_ext;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct sctp_infox infox;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) void *info = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) nlh = nlmsg_put(skb, portid, seq, unlh->nlmsg_type, sizeof(*r),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) nlmsg_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (!nlh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) r = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) BUG_ON(!sk_fullsock(sk));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) r->idiag_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) r->idiag_retrans = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) r->idiag_expires = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (asoc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) inet_diag_msg_sctpasoc_fill(r, sk, asoc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) inet_diag_msg_common_fill(r, sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) r->idiag_state = sk->sk_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (inet_diag_msg_attrs_fill(sk, skb, r, ext, user_ns, net_admin))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (ext & (1 << (INET_DIAG_SKMEMINFO - 1))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) u32 mem[SK_MEMINFO_VARS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int amt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (asoc && asoc->ep->sndbuf_policy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) amt = asoc->sndbuf_used;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) amt = sk_wmem_alloc_get(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) mem[SK_MEMINFO_WMEM_ALLOC] = amt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) if (asoc && asoc->ep->rcvbuf_policy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) amt = atomic_read(&asoc->rmem_alloc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) amt = sk_rmem_alloc_get(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) mem[SK_MEMINFO_RMEM_ALLOC] = amt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) mem[SK_MEMINFO_RCVBUF] = sk->sk_rcvbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) mem[SK_MEMINFO_SNDBUF] = sk->sk_sndbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) mem[SK_MEMINFO_FWD_ALLOC] = sk->sk_forward_alloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) mem[SK_MEMINFO_WMEM_QUEUED] = sk->sk_wmem_queued;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) mem[SK_MEMINFO_OPTMEM] = atomic_read(&sk->sk_omem_alloc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) mem[SK_MEMINFO_BACKLOG] = READ_ONCE(sk->sk_backlog.len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) mem[SK_MEMINFO_DROPS] = atomic_read(&sk->sk_drops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) if (nla_put(skb, INET_DIAG_SKMEMINFO, sizeof(mem), &mem) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (ext & (1 << (INET_DIAG_INFO - 1))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct nlattr *attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) attr = nla_reserve_64bit(skb, INET_DIAG_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) sizeof(struct sctp_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) INET_DIAG_PAD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (!attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) info = nla_data(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) infox.sctpinfo = (struct sctp_info *)info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) infox.asoc = asoc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) sctp_diag_get_info(sk, r, &infox);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) addr_list = asoc ? &asoc->base.bind_addr.address_list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) : &ep->base.bind_addr.address_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (inet_diag_msg_sctpladdrs_fill(skb, addr_list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) if (asoc && (ext & (1 << (INET_DIAG_CONG - 1))))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (nla_put_string(skb, INET_DIAG_CONG, "reno") < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (asoc && inet_diag_msg_sctpaddrs_fill(skb, asoc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) goto errout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) errout:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) /* callback and param */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) struct sctp_comm_param {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) struct netlink_callback *cb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) const struct inet_diag_req_v2 *r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) const struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) bool net_admin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static size_t inet_assoc_attr_size(struct sctp_association *asoc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) int addrlen = sizeof(struct sockaddr_storage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) int addrcnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) struct sctp_sockaddr_entry *laddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) list_for_each_entry_rcu(laddr, &asoc->base.bind_addr.address_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) addrcnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) return nla_total_size(sizeof(struct sctp_info))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) + nla_total_size(addrlen * asoc->peer.transport_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) + nla_total_size(addrlen * addrcnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) + nla_total_size(sizeof(struct inet_diag_msg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) + inet_diag_msg_attrs_size()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) + nla_total_size(sizeof(struct inet_diag_meminfo))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) + 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) static int sctp_tsp_dump_one(struct sctp_transport *tsp, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) struct sctp_association *assoc = tsp->asoc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) struct sock *sk = tsp->asoc->base.sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) struct sctp_comm_param *commp = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) struct sk_buff *in_skb = commp->skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) const struct inet_diag_req_v2 *req = commp->r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) const struct nlmsghdr *nlh = commp->nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) struct net *net = sock_net(in_skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) struct sk_buff *rep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) err = sock_diag_check_cookie(sk, req->id.idiag_cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) rep = nlmsg_new(inet_assoc_attr_size(assoc), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (!rep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) if (sk != assoc->base.sk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) sk = assoc->base.sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) err = inet_sctp_diag_fill(sk, assoc, rep, req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) sk_user_ns(NETLINK_CB(in_skb).sk),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) NETLINK_CB(in_skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) nlh->nlmsg_seq, 0, nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) commp->net_admin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) WARN_ON(err == -EMSGSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) kfree_skb(rep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) MSG_DONTWAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (err > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) static int sctp_sock_dump(struct sctp_endpoint *ep, struct sctp_transport *tsp, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) struct sctp_comm_param *commp = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) struct sock *sk = ep->base.sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) struct sk_buff *skb = commp->skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) struct netlink_callback *cb = commp->cb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) const struct inet_diag_req_v2 *r = commp->r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct sctp_association *assoc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) lock_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (ep != tsp->asoc->ep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) goto release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) list_for_each_entry(assoc, &ep->asocs, asocs) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if (cb->args[4] < cb->args[1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (r->id.idiag_sport != htons(assoc->base.bind_addr.port) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) r->id.idiag_sport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (r->id.idiag_dport != htons(assoc->peer.port) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) r->id.idiag_dport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (!cb->args[3] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) inet_sctp_diag_fill(sk, NULL, skb, r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) sk_user_ns(NETLINK_CB(cb->skb).sk),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) NETLINK_CB(cb->skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) cb->nlh->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) NLM_F_MULTI, cb->nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) commp->net_admin) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) err = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) goto release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) cb->args[3] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) if (inet_sctp_diag_fill(sk, assoc, skb, r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) sk_user_ns(NETLINK_CB(cb->skb).sk),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) NETLINK_CB(cb->skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) cb->nlh->nlmsg_seq, 0, cb->nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) commp->net_admin) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) err = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) goto release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) next:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) cb->args[4]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) cb->args[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) cb->args[3] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) cb->args[4] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) release:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) release_sock(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static int sctp_sock_filter(struct sctp_endpoint *ep, struct sctp_transport *tsp, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) struct sctp_comm_param *commp = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) struct sock *sk = ep->base.sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) const struct inet_diag_req_v2 *r = commp->r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) struct sctp_association *assoc =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) list_entry(ep->asocs.next, struct sctp_association, asocs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /* find the ep only once through the transports by this condition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (tsp->asoc != assoc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if (r->sdiag_family != AF_UNSPEC && sk->sk_family != r->sdiag_family)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) static int sctp_ep_dump(struct sctp_endpoint *ep, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) struct sctp_comm_param *commp = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) struct sock *sk = ep->base.sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct sk_buff *skb = commp->skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) struct netlink_callback *cb = commp->cb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) const struct inet_diag_req_v2 *r = commp->r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) struct inet_sock *inet = inet_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) if (!net_eq(sock_net(sk), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (cb->args[4] < cb->args[1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (!(r->idiag_states & TCPF_LISTEN) && !list_empty(&ep->asocs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) if (r->sdiag_family != AF_UNSPEC &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) sk->sk_family != r->sdiag_family)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (r->id.idiag_sport != inet->inet_sport &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) r->id.idiag_sport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (r->id.idiag_dport != inet->inet_dport &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) r->id.idiag_dport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) goto next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) if (inet_sctp_diag_fill(sk, NULL, skb, r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) sk_user_ns(NETLINK_CB(cb->skb).sk),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) NETLINK_CB(cb->skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) cb->nlh->nlmsg_seq, NLM_F_MULTI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) cb->nlh, commp->net_admin) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) err = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) next:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) cb->args[4]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) /* define the functions for sctp_diag_handler*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) static void sctp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) void *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) struct sctp_infox *infox = (struct sctp_infox *)info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (infox->asoc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) r->idiag_rqueue = atomic_read(&infox->asoc->rmem_alloc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) r->idiag_wqueue = infox->asoc->sndbuf_used;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) r->idiag_rqueue = READ_ONCE(sk->sk_ack_backlog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) r->idiag_wqueue = READ_ONCE(sk->sk_max_ack_backlog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (infox->sctpinfo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) sctp_get_sctp_info(sk, infox->asoc, infox->sctpinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) static int sctp_diag_dump_one(struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) const struct inet_diag_req_v2 *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) struct sk_buff *in_skb = cb->skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) struct net *net = sock_net(in_skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) const struct nlmsghdr *nlh = cb->nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) union sctp_addr laddr, paddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) struct sctp_comm_param commp = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) .skb = in_skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) .r = req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) .nlh = nlh,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) .net_admin = netlink_net_capable(in_skb, CAP_NET_ADMIN),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (req->sdiag_family == AF_INET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) laddr.v4.sin_port = req->id.idiag_sport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) laddr.v4.sin_addr.s_addr = req->id.idiag_src[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) laddr.v4.sin_family = AF_INET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) paddr.v4.sin_port = req->id.idiag_dport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) paddr.v4.sin_addr.s_addr = req->id.idiag_dst[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) paddr.v4.sin_family = AF_INET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) laddr.v6.sin6_port = req->id.idiag_sport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) memcpy(&laddr.v6.sin6_addr, req->id.idiag_src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) sizeof(laddr.v6.sin6_addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) laddr.v6.sin6_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) paddr.v6.sin6_port = req->id.idiag_dport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) memcpy(&paddr.v6.sin6_addr, req->id.idiag_dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) sizeof(paddr.v6.sin6_addr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) paddr.v6.sin6_family = AF_INET6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) return sctp_transport_lookup_process(sctp_tsp_dump_one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) net, &laddr, &paddr, &commp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) static void sctp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) const struct inet_diag_req_v2 *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) u32 idiag_states = r->idiag_states;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) struct sctp_comm_param commp = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) .skb = skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) .cb = cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) .r = r,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) .net_admin = netlink_net_capable(cb->skb, CAP_NET_ADMIN),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) int pos = cb->args[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) /* eps hashtable dumps
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) * args:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) * 0 : if it will traversal listen sock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * 1 : to record the sock pos of this time's traversal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) * 4 : to work as a temporary variable to traversal list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (cb->args[0] == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) if (!(idiag_states & TCPF_LISTEN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) goto skip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (sctp_for_each_endpoint(sctp_ep_dump, &commp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) skip:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) cb->args[0] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) cb->args[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) cb->args[4] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) /* asocs by transport hashtable dump
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) * args:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) * 1 : to record the assoc pos of this time's traversal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) * 2 : to record the transport pos of this time's traversal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) * 3 : to mark if we have dumped the ep info of the current asoc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) * 4 : to work as a temporary variable to traversal list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) * 5 : to save the sk we get from travelsing the tsp list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) if (!(idiag_states & ~(TCPF_LISTEN | TCPF_CLOSE)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) sctp_transport_traverse_process(sctp_sock_filter, sctp_sock_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) net, &pos, &commp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) cb->args[2] = pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) cb->args[1] = cb->args[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) cb->args[4] = 0;
^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 const struct inet_diag_handler sctp_diag_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) .dump = sctp_diag_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) .dump_one = sctp_diag_dump_one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) .idiag_get_info = sctp_diag_get_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) .idiag_type = IPPROTO_SCTP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) .idiag_info_size = sizeof(struct sctp_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) static int __init sctp_diag_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) return inet_diag_register(&sctp_diag_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) static void __exit sctp_diag_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) inet_diag_unregister(&sctp_diag_handler);
^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) module_init(sctp_diag_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) module_exit(sctp_diag_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-132);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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