^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * net/sched/ife.c Inter-FE action based on ForCES WG InterFE LFB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Refer to:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * draft-ietf-forces-interfelfb-03
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * netdev01 paper:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * "Distributing Linux Traffic Control Classifier-Action
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Subsystem"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Authors: Jamal Hadi Salim and Damascene M. Joachimpillai
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * copyright Jamal Hadi Salim (2015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <net/net_namespace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <net/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <net/pkt_sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <net/pkt_cls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <uapi/linux/tc_act/tc_ife.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <net/tc_act/tc_ife.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <net/ife.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static unsigned int ife_net_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int max_metacnt = IFE_META_MAX + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static struct tc_action_ops act_ife_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static const struct nla_policy ife_policy[TCA_IFE_MAX + 1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) [TCA_IFE_PARMS] = { .len = sizeof(struct tc_ife)},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) [TCA_IFE_DMAC] = { .len = ETH_ALEN},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) [TCA_IFE_SMAC] = { .len = ETH_ALEN},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) [TCA_IFE_TYPE] = { .type = NLA_U16},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int ife_encode_meta_u16(u16 metaval, void *skbdata, struct tcf_meta_info *mi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u16 edata = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (mi->metaval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) edata = *(u16 *)mi->metaval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) else if (metaval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) edata = metaval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) if (!edata) /* will not encode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) edata = htons(edata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return ife_tlv_meta_encode(skbdata, mi->metaid, 2, &edata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) EXPORT_SYMBOL_GPL(ife_encode_meta_u16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) int ife_get_meta_u32(struct sk_buff *skb, struct tcf_meta_info *mi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (mi->metaval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return nla_put_u32(skb, mi->metaid, *(u32 *)mi->metaval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return nla_put(skb, mi->metaid, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) EXPORT_SYMBOL_GPL(ife_get_meta_u32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) int ife_check_meta_u32(u32 metaval, struct tcf_meta_info *mi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (metaval || mi->metaval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return 8; /* T+L+V == 2+2+4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) EXPORT_SYMBOL_GPL(ife_check_meta_u32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) int ife_check_meta_u16(u16 metaval, struct tcf_meta_info *mi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (metaval || mi->metaval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return 8; /* T+L+(V) == 2+2+(2+2bytepad) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) EXPORT_SYMBOL_GPL(ife_check_meta_u16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) int ife_encode_meta_u32(u32 metaval, void *skbdata, struct tcf_meta_info *mi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) u32 edata = metaval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (mi->metaval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) edata = *(u32 *)mi->metaval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) else if (metaval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) edata = metaval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (!edata) /* will not encode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) edata = htonl(edata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return ife_tlv_meta_encode(skbdata, mi->metaid, 4, &edata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) EXPORT_SYMBOL_GPL(ife_encode_meta_u32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (mi->metaval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return nla_put_u16(skb, mi->metaid, *(u16 *)mi->metaval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) return nla_put(skb, mi->metaid, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) EXPORT_SYMBOL_GPL(ife_get_meta_u16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval, gfp_t gfp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) mi->metaval = kmemdup(metaval, sizeof(u32), gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (!mi->metaval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) EXPORT_SYMBOL_GPL(ife_alloc_meta_u32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval, gfp_t gfp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) mi->metaval = kmemdup(metaval, sizeof(u16), gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (!mi->metaval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) EXPORT_SYMBOL_GPL(ife_alloc_meta_u16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) void ife_release_meta_gen(struct tcf_meta_info *mi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) kfree(mi->metaval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) EXPORT_SYMBOL_GPL(ife_release_meta_gen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) int ife_validate_meta_u32(void *val, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (len == sizeof(u32))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) EXPORT_SYMBOL_GPL(ife_validate_meta_u32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) int ife_validate_meta_u16(void *val, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) /* length will not include padding */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (len == sizeof(u16))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) EXPORT_SYMBOL_GPL(ife_validate_meta_u16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) static LIST_HEAD(ifeoplist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static DEFINE_RWLOCK(ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static struct tcf_meta_ops *find_ife_oplist(u16 metaid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct tcf_meta_ops *o;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) read_lock(&ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) list_for_each_entry(o, &ifeoplist, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (o->metaid == metaid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) if (!try_module_get(o->owner))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) o = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) read_unlock(&ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return o;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) read_unlock(&ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) int register_ife_op(struct tcf_meta_ops *mops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) struct tcf_meta_ops *m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (!mops->metaid || !mops->metatype || !mops->name ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) !mops->check_presence || !mops->encode || !mops->decode ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) !mops->get || !mops->alloc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) write_lock(&ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) list_for_each_entry(m, &ifeoplist, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (m->metaid == mops->metaid ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) (strcmp(mops->name, m->name) == 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) write_unlock(&ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) return -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (!mops->release)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) mops->release = ife_release_meta_gen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) list_add_tail(&mops->list, &ifeoplist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) write_unlock(&ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) EXPORT_SYMBOL_GPL(unregister_ife_op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) int unregister_ife_op(struct tcf_meta_ops *mops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct tcf_meta_ops *m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) int err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) write_lock(&ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) list_for_each_entry(m, &ifeoplist, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if (m->metaid == mops->metaid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) list_del(&mops->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) write_unlock(&ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) EXPORT_SYMBOL_GPL(register_ife_op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static int ife_validate_metatype(struct tcf_meta_ops *ops, void *val, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) /* XXX: unfortunately cant use nla_policy at this point
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * because a length of 0 is valid in the case of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * "allow". "use" semantics do enforce for proper
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * length and i couldve use nla_policy but it makes it hard
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * to use it just for that..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (ops->validate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) return ops->validate(val, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (ops->metatype == NLA_U32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) ret = ife_validate_meta_u32(val, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) else if (ops->metatype == NLA_U16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) ret = ife_validate_meta_u16(val, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #ifdef CONFIG_MODULES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static const char *ife_meta_id2name(u32 metaid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) switch (metaid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) case IFE_META_SKBMARK:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) return "skbmark";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) case IFE_META_PRIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) return "skbprio";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) case IFE_META_TCINDEX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) return "tcindex";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) return "unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) /* called when adding new meta information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) static int load_metaops_and_vet(u32 metaid, void *val, int len, bool rtnl_held)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) struct tcf_meta_ops *ops = find_ife_oplist(metaid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (!ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #ifdef CONFIG_MODULES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (rtnl_held)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) request_module("ife-meta-%s", ife_meta_id2name(metaid));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (rtnl_held)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ops = find_ife_oplist(metaid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) if (len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) ret = ife_validate_metatype(ops, val, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) module_put(ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) /* called when adding new meta information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) static int __add_metainfo(const struct tcf_meta_ops *ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) struct tcf_ife_info *ife, u32 metaid, void *metaval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) int len, bool atomic, bool exists)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) struct tcf_meta_info *mi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) mi = kzalloc(sizeof(*mi), atomic ? GFP_ATOMIC : GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (!mi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) mi->metaid = metaid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) mi->ops = ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) if (len > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) ret = ops->alloc(mi, metaval, atomic ? GFP_ATOMIC : GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (ret != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) kfree(mi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return ret;
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (exists)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) spin_lock_bh(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) list_add_tail(&mi->metalist, &ife->metalist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (exists)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) spin_unlock_bh(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) static int add_metainfo_and_get_ops(const struct tcf_meta_ops *ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) struct tcf_ife_info *ife, u32 metaid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) bool exists)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (!try_module_get(ops->owner))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) ret = __add_metainfo(ops, ife, metaid, NULL, 0, true, exists);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) module_put(ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) static int add_metainfo(struct tcf_ife_info *ife, u32 metaid, void *metaval,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) int len, bool exists)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) const struct tcf_meta_ops *ops = find_ife_oplist(metaid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) if (!ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) ret = __add_metainfo(ops, ife, metaid, metaval, len, false, exists);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) /*put back what find_ife_oplist took */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) module_put(ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) static int use_all_metadata(struct tcf_ife_info *ife, bool exists)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) struct tcf_meta_ops *o;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) int installed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) read_lock(&ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) list_for_each_entry(o, &ifeoplist, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) rc = add_metainfo_and_get_ops(o, ife, o->metaid, exists);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if (rc == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) installed += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) read_unlock(&ife_mod_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (installed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) static int dump_metalist(struct sk_buff *skb, struct tcf_ife_info *ife)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) struct tcf_meta_info *e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct nlattr *nest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) unsigned char *b = skb_tail_pointer(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) int total_encoded = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /*can only happen on decode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (list_empty(&ife->metalist))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) nest = nla_nest_start_noflag(skb, TCA_IFE_METALST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) if (!nest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) goto out_nlmsg_trim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) list_for_each_entry(e, &ife->metalist, metalist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (!e->ops->get(skb, e))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) total_encoded += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) if (!total_encoded)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) goto out_nlmsg_trim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) nla_nest_end(skb, nest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) out_nlmsg_trim:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) nlmsg_trim(skb, b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) /* under ife->tcf_lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) static void _tcf_ife_cleanup(struct tc_action *a)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) struct tcf_ife_info *ife = to_ife(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) struct tcf_meta_info *e, *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) list_for_each_entry_safe(e, n, &ife->metalist, metalist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) list_del(&e->metalist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (e->metaval) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (e->ops->release)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) e->ops->release(e);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) kfree(e->metaval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) module_put(e->ops->owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) kfree(e);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^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 void tcf_ife_cleanup(struct tc_action *a)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) struct tcf_ife_info *ife = to_ife(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) struct tcf_ife_params *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) spin_lock_bh(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) _tcf_ife_cleanup(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) spin_unlock_bh(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) p = rcu_dereference_protected(ife->params, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) kfree_rcu(p, rcu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) static int load_metalist(struct nlattr **tb, bool rtnl_held)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) for (i = 1; i < max_metacnt; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (tb[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) void *val = nla_data(tb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) int len = nla_len(tb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) rc = load_metaops_and_vet(i, val, len, rtnl_held);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) if (rc != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) static int populate_metalist(struct tcf_ife_info *ife, struct nlattr **tb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) bool exists, bool rtnl_held)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) int len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) void *val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) for (i = 1; i < max_metacnt; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (tb[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) val = nla_data(tb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) len = nla_len(tb[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) rc = add_metainfo(ife, i, val, len, exists);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) static int tcf_ife_init(struct net *net, struct nlattr *nla,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) struct nlattr *est, struct tc_action **a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) int ovr, int bind, bool rtnl_held,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) struct tcf_proto *tp, u32 flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) struct tc_action_net *tn = net_generic(net, ife_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) struct nlattr *tb[TCA_IFE_MAX + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) struct nlattr *tb2[IFE_META_MAX + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) struct tcf_chain *goto_ch = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) struct tcf_ife_params *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) struct tcf_ife_info *ife;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) u16 ife_type = ETH_P_IFE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) struct tc_ife *parm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) u8 *daddr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) u8 *saddr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) bool exists = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) u32 index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (!nla) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) NL_SET_ERR_MSG_MOD(extack, "IFE requires attributes to be passed");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) err = nla_parse_nested_deprecated(tb, TCA_IFE_MAX, nla, ife_policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) if (!tb[TCA_IFE_PARMS])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) parm = nla_data(tb[TCA_IFE_PARMS]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) /* IFE_DECODE is 0 and indicates the opposite of IFE_ENCODE because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * they cannot run as the same time. Check on all other values which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * are not supported right now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (parm->flags & ~IFE_ENCODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) p = kzalloc(sizeof(*p), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) if (tb[TCA_IFE_METALST]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) err = nla_parse_nested_deprecated(tb2, IFE_META_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) tb[TCA_IFE_METALST], NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) kfree(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) err = load_metalist(tb2, rtnl_held);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) kfree(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) return err;
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) index = parm->index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) err = tcf_idr_check_alloc(tn, &index, a, bind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) kfree(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) exists = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) if (exists && bind) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) kfree(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) if (!exists) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) ret = tcf_idr_create(tn, index, est, a, &act_ife_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) bind, true, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) tcf_idr_cleanup(tn, index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) kfree(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) ret = ACT_P_CREATED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) } else if (!ovr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) tcf_idr_release(*a, bind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) kfree(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) return -EEXIST;
^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) ife = to_ife(*a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) if (ret == ACT_P_CREATED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) INIT_LIST_HEAD(&ife->metalist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) err = tcf_action_check_ctrlact(parm->action, tp, &goto_ch, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) goto release_idr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) p->flags = parm->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) if (parm->flags & IFE_ENCODE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) if (tb[TCA_IFE_TYPE])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) ife_type = nla_get_u16(tb[TCA_IFE_TYPE]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) if (tb[TCA_IFE_DMAC])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) daddr = nla_data(tb[TCA_IFE_DMAC]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (tb[TCA_IFE_SMAC])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) saddr = nla_data(tb[TCA_IFE_SMAC]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) if (parm->flags & IFE_ENCODE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) if (daddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) ether_addr_copy(p->eth_dst, daddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) eth_zero_addr(p->eth_dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) if (saddr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) ether_addr_copy(p->eth_src, saddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) eth_zero_addr(p->eth_src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) p->eth_type = ife_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) if (tb[TCA_IFE_METALST]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) err = populate_metalist(ife, tb2, exists, rtnl_held);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) goto metadata_parse_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) /* if no passed metadata allow list or passed allow-all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * then here we process by adding as many supported metadatum
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) * as we can. You better have at least one else we are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) * going to bail out
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) err = use_all_metadata(ife, exists);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) goto metadata_parse_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) if (exists)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) spin_lock_bh(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) /* protected by tcf_lock when modifying existing action */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) goto_ch = tcf_action_set_ctrlact(*a, parm->action, goto_ch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) p = rcu_replace_pointer(ife->params, p, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) if (exists)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) spin_unlock_bh(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) if (goto_ch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) tcf_chain_put_by_act(goto_ch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) if (p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) kfree_rcu(p, rcu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) metadata_parse_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) if (goto_ch)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) tcf_chain_put_by_act(goto_ch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) release_idr:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) kfree(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) tcf_idr_release(*a, bind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) static int tcf_ife_dump(struct sk_buff *skb, struct tc_action *a, int bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) int ref)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) unsigned char *b = skb_tail_pointer(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) struct tcf_ife_info *ife = to_ife(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) struct tcf_ife_params *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) struct tc_ife opt = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) .index = ife->tcf_index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) .refcnt = refcount_read(&ife->tcf_refcnt) - ref,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) .bindcnt = atomic_read(&ife->tcf_bindcnt) - bind,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) struct tcf_t t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) spin_lock_bh(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) opt.action = ife->tcf_action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) p = rcu_dereference_protected(ife->params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) lockdep_is_held(&ife->tcf_lock));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) opt.flags = p->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) if (nla_put(skb, TCA_IFE_PARMS, sizeof(opt), &opt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) tcf_tm_dump(&t, &ife->tcf_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) if (nla_put_64bit(skb, TCA_IFE_TM, sizeof(t), &t, TCA_IFE_PAD))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) if (!is_zero_ether_addr(p->eth_dst)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) if (nla_put(skb, TCA_IFE_DMAC, ETH_ALEN, p->eth_dst))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) goto nla_put_failure;
^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) if (!is_zero_ether_addr(p->eth_src)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) if (nla_put(skb, TCA_IFE_SMAC, ETH_ALEN, p->eth_src))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) if (nla_put(skb, TCA_IFE_TYPE, 2, &p->eth_type))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) if (dump_metalist(skb, ife)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) /*ignore failure to dump metalist */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) pr_info("Failed to dump metalist\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) spin_unlock_bh(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) return skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) spin_unlock_bh(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) nlmsg_trim(skb, b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) static int find_decode_metaid(struct sk_buff *skb, struct tcf_ife_info *ife,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) u16 metaid, u16 mlen, void *mdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) struct tcf_meta_info *e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) /* XXX: use hash to speed up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) list_for_each_entry(e, &ife->metalist, metalist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) if (metaid == e->metaid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) if (e->ops) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) /* We check for decode presence already */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) return e->ops->decode(skb, mdata, mlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) static int tcf_ife_decode(struct sk_buff *skb, const struct tc_action *a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) struct tcf_result *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) struct tcf_ife_info *ife = to_ife(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) int action = ife->tcf_action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) u8 *ifehdr_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) u8 *tlv_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) u16 metalen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) bstats_cpu_update(this_cpu_ptr(ife->common.cpu_bstats), skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) tcf_lastuse_update(&ife->tcf_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) if (skb_at_tc_ingress(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) skb_push(skb, skb->dev->hard_header_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) tlv_data = ife_decode(skb, &metalen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) if (unlikely(!tlv_data)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) qstats_drop_inc(this_cpu_ptr(ife->common.cpu_qstats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) return TC_ACT_SHOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) ifehdr_end = tlv_data + metalen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) for (; tlv_data < ifehdr_end; tlv_data = ife_tlv_meta_next(tlv_data)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) u8 *curr_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) u16 mtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) u16 dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) curr_data = ife_tlv_meta_decode(tlv_data, ifehdr_end, &mtype,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) &dlen, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (!curr_data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) qstats_drop_inc(this_cpu_ptr(ife->common.cpu_qstats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) return TC_ACT_SHOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) if (find_decode_metaid(skb, ife, mtype, dlen, curr_data)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) /* abuse overlimits to count when we receive metadata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) * but dont have an ops for it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) pr_info_ratelimited("Unknown metaid %d dlen %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) mtype, dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) qstats_overlimit_inc(this_cpu_ptr(ife->common.cpu_qstats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) if (WARN_ON(tlv_data != ifehdr_end)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) qstats_drop_inc(this_cpu_ptr(ife->common.cpu_qstats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) return TC_ACT_SHOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) skb->protocol = eth_type_trans(skb, skb->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) skb_reset_network_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) return action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) /*XXX: check if we can do this at install time instead of current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) * send data path
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) **/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) static int ife_get_sz(struct sk_buff *skb, struct tcf_ife_info *ife)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) struct tcf_meta_info *e, *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) int tot_run_sz = 0, run_sz = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) list_for_each_entry_safe(e, n, &ife->metalist, metalist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) if (e->ops->check_presence) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) run_sz = e->ops->check_presence(skb, e);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) tot_run_sz += run_sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) return tot_run_sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) static int tcf_ife_encode(struct sk_buff *skb, const struct tc_action *a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) struct tcf_result *res, struct tcf_ife_params *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) struct tcf_ife_info *ife = to_ife(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) int action = ife->tcf_action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) struct ethhdr *oethh; /* outer ether header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) struct tcf_meta_info *e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) OUTERHDR:TOTMETALEN:{TLVHDR:Metadatum:TLVHDR..}:ORIGDATA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) where ORIGDATA = original ethernet header ...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) u16 metalen = ife_get_sz(skb, ife);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) int hdrm = metalen + skb->dev->hard_header_len + IFE_METAHDRLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) unsigned int skboff = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) int new_len = skb->len + hdrm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) bool exceed_mtu = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) void *ife_meta;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) if (!skb_at_tc_ingress(skb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) if (new_len > skb->dev->mtu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) exceed_mtu = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) bstats_cpu_update(this_cpu_ptr(ife->common.cpu_bstats), skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) tcf_lastuse_update(&ife->tcf_tm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) if (!metalen) { /* no metadata to send */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) /* abuse overlimits to count when we allow packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) * with no metadata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) qstats_overlimit_inc(this_cpu_ptr(ife->common.cpu_qstats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) return action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) /* could be stupid policy setup or mtu config
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) * so lets be conservative.. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) if ((action == TC_ACT_SHOT) || exceed_mtu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) qstats_drop_inc(this_cpu_ptr(ife->common.cpu_qstats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) return TC_ACT_SHOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) if (skb_at_tc_ingress(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) skb_push(skb, skb->dev->hard_header_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) ife_meta = ife_encode(skb, metalen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) spin_lock(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) /* XXX: we dont have a clever way of telling encode to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) * not repeat some of the computations that are done by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) * ops->presence_check...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) list_for_each_entry(e, &ife->metalist, metalist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) if (e->ops->encode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) err = e->ops->encode(skb, (void *)(ife_meta + skboff),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) e);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) /* too corrupt to keep around if overwritten */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) spin_unlock(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) qstats_drop_inc(this_cpu_ptr(ife->common.cpu_qstats));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) return TC_ACT_SHOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) skboff += err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) spin_unlock(&ife->tcf_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) oethh = (struct ethhdr *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) if (!is_zero_ether_addr(p->eth_src))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) ether_addr_copy(oethh->h_source, p->eth_src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) if (!is_zero_ether_addr(p->eth_dst))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) ether_addr_copy(oethh->h_dest, p->eth_dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) oethh->h_proto = htons(p->eth_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) if (skb_at_tc_ingress(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) skb_pull(skb, skb->dev->hard_header_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) return action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) static int tcf_ife_act(struct sk_buff *skb, const struct tc_action *a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) struct tcf_result *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) struct tcf_ife_info *ife = to_ife(a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) struct tcf_ife_params *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) p = rcu_dereference_bh(ife->params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) if (p->flags & IFE_ENCODE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) ret = tcf_ife_encode(skb, a, res, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) return tcf_ife_decode(skb, a, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) static int tcf_ife_walker(struct net *net, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) struct netlink_callback *cb, int type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) const struct tc_action_ops *ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) struct netlink_ext_ack *extack)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) struct tc_action_net *tn = net_generic(net, ife_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) return tcf_generic_walker(tn, skb, cb, type, ops, extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) static int tcf_ife_search(struct net *net, struct tc_action **a, u32 index)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) struct tc_action_net *tn = net_generic(net, ife_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) return tcf_idr_search(tn, a, index);
^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) static struct tc_action_ops act_ife_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) .kind = "ife",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) .id = TCA_ID_IFE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) .act = tcf_ife_act,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) .dump = tcf_ife_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) .cleanup = tcf_ife_cleanup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) .init = tcf_ife_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) .walk = tcf_ife_walker,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) .lookup = tcf_ife_search,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) .size = sizeof(struct tcf_ife_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) static __net_init int ife_init_net(struct net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) struct tc_action_net *tn = net_generic(net, ife_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) return tc_action_net_init(net, tn, &act_ife_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) static void __net_exit ife_exit_net(struct list_head *net_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) tc_action_net_exit(net_list, ife_net_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) static struct pernet_operations ife_net_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) .init = ife_init_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) .exit_batch = ife_exit_net,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) .id = &ife_net_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) .size = sizeof(struct tc_action_net),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) static int __init ife_init_module(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) return tcf_register_action(&act_ife_ops, &ife_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) static void __exit ife_cleanup_module(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) tcf_unregister_action(&act_ife_ops, &ife_net_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) module_init(ife_init_module);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) module_exit(ife_cleanup_module);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) MODULE_AUTHOR("Jamal Hadi Salim(2015)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) MODULE_DESCRIPTION("Inter-FE LFB action");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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