2 * net/sched/act_api.c Packet action API.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 * Author: Jamal Hadi Salim
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/string.h>
17 #include <linux/errno.h>
18 #include <linux/skbuff.h>
19 #include <linux/init.h>
20 #include <linux/kmod.h>
21 #include <net/net_namespace.h>
23 #include <net/sch_generic.h>
24 #include <net/act_api.h>
25 #include <net/netlink.h>
27 void tcf_hash_destroy(struct tcf_common *p, struct tcf_hashinfo *hinfo)
29 unsigned int h = tcf_hash(p->tcfc_index, hinfo->hmask);
30 struct tcf_common **p1p;
32 for (p1p = &hinfo->htab[h]; *p1p; p1p = &(*p1p)->tcfc_next) {
34 write_lock_bh(hinfo->lock);
36 write_unlock_bh(hinfo->lock);
37 gen_kill_estimator(&p->tcfc_bstats,
45 EXPORT_SYMBOL(tcf_hash_destroy);
47 int tcf_hash_release(struct tcf_common *p, int bind,
48 struct tcf_hashinfo *hinfo)
57 if (p->tcfc_bindcnt <= 0 && p->tcfc_refcnt <= 0) {
58 tcf_hash_destroy(p, hinfo);
64 EXPORT_SYMBOL(tcf_hash_release);
66 static int tcf_dump_walker(struct sk_buff *skb, struct netlink_callback *cb,
67 struct tc_action *a, struct tcf_hashinfo *hinfo)
70 int err = 0, index = -1,i = 0, s_i = 0, n_i = 0;
73 read_lock_bh(hinfo->lock);
77 for (i = 0; i < (hinfo->hmask + 1); i++) {
78 p = hinfo->htab[tcf_hash(i, hinfo->hmask)];
80 for (; p; p = p->tcfc_next) {
86 r = (struct nlattr *)skb_tail_pointer(skb);
87 NLA_PUT(skb, a->order, 0, NULL);
88 err = tcf_action_dump_1(skb, a, 0, 0);
94 r->nla_len = skb_tail_pointer(skb) - (u8 *)r;
96 if (n_i >= TCA_ACT_MAX_PRIO)
101 read_unlock_bh(hinfo->lock);
111 static int tcf_del_walker(struct sk_buff *skb, struct tc_action *a,
112 struct tcf_hashinfo *hinfo)
114 struct tcf_common *p, *s_p;
118 r = (struct nlattr *)skb_tail_pointer(skb);
119 NLA_PUT(skb, a->order, 0, NULL);
120 NLA_PUT(skb, TCA_KIND, IFNAMSIZ, a->ops->kind);
121 for (i = 0; i < (hinfo->hmask + 1); i++) {
122 p = hinfo->htab[tcf_hash(i, hinfo->hmask)];
126 if (ACT_P_DELETED == tcf_hash_release(p, 0, hinfo))
127 module_put(a->ops->owner);
132 NLA_PUT(skb, TCA_FCNT, 4, &n_i);
133 r->nla_len = skb_tail_pointer(skb) - (u8 *)r;
141 int tcf_generic_walker(struct sk_buff *skb, struct netlink_callback *cb,
142 int type, struct tc_action *a)
144 struct tcf_hashinfo *hinfo = a->ops->hinfo;
146 if (type == RTM_DELACTION) {
147 return tcf_del_walker(skb, a, hinfo);
148 } else if (type == RTM_GETACTION) {
149 return tcf_dump_walker(skb, cb, a, hinfo);
151 printk("tcf_generic_walker: unknown action %d\n", type);
155 EXPORT_SYMBOL(tcf_generic_walker);
157 struct tcf_common *tcf_hash_lookup(u32 index, struct tcf_hashinfo *hinfo)
159 struct tcf_common *p;
161 read_lock_bh(hinfo->lock);
162 for (p = hinfo->htab[tcf_hash(index, hinfo->hmask)]; p;
164 if (p->tcfc_index == index)
167 read_unlock_bh(hinfo->lock);
171 EXPORT_SYMBOL(tcf_hash_lookup);
173 u32 tcf_hash_new_index(u32 *idx_gen, struct tcf_hashinfo *hinfo)
180 } while (tcf_hash_lookup(val, hinfo));
182 return (*idx_gen = val);
184 EXPORT_SYMBOL(tcf_hash_new_index);
186 int tcf_hash_search(struct tc_action *a, u32 index)
188 struct tcf_hashinfo *hinfo = a->ops->hinfo;
189 struct tcf_common *p = tcf_hash_lookup(index, hinfo);
197 EXPORT_SYMBOL(tcf_hash_search);
199 struct tcf_common *tcf_hash_check(u32 index, struct tc_action *a, int bind,
200 struct tcf_hashinfo *hinfo)
202 struct tcf_common *p = NULL;
203 if (index && (p = tcf_hash_lookup(index, hinfo)) != NULL) {
212 EXPORT_SYMBOL(tcf_hash_check);
214 struct tcf_common *tcf_hash_create(u32 index, struct nlattr *est, struct tc_action *a, int size, int bind, u32 *idx_gen, struct tcf_hashinfo *hinfo)
216 struct tcf_common *p = kzalloc(size, GFP_KERNEL);
224 spin_lock_init(&p->tcfc_lock);
225 p->tcfc_index = index ? index : tcf_hash_new_index(idx_gen, hinfo);
226 p->tcfc_tm.install = jiffies;
227 p->tcfc_tm.lastuse = jiffies;
229 gen_new_estimator(&p->tcfc_bstats, &p->tcfc_rate_est,
231 a->priv = (void *) p;
234 EXPORT_SYMBOL(tcf_hash_create);
236 void tcf_hash_insert(struct tcf_common *p, struct tcf_hashinfo *hinfo)
238 unsigned int h = tcf_hash(p->tcfc_index, hinfo->hmask);
240 write_lock_bh(hinfo->lock);
241 p->tcfc_next = hinfo->htab[h];
243 write_unlock_bh(hinfo->lock);
245 EXPORT_SYMBOL(tcf_hash_insert);
247 static struct tc_action_ops *act_base = NULL;
248 static DEFINE_RWLOCK(act_mod_lock);
250 int tcf_register_action(struct tc_action_ops *act)
252 struct tc_action_ops *a, **ap;
254 write_lock(&act_mod_lock);
255 for (ap = &act_base; (a = *ap) != NULL; ap = &a->next) {
256 if (act->type == a->type || (strcmp(act->kind, a->kind) == 0)) {
257 write_unlock(&act_mod_lock);
263 write_unlock(&act_mod_lock);
266 EXPORT_SYMBOL(tcf_register_action);
268 int tcf_unregister_action(struct tc_action_ops *act)
270 struct tc_action_ops *a, **ap;
273 write_lock(&act_mod_lock);
274 for (ap = &act_base; (a = *ap) != NULL; ap = &a->next)
282 write_unlock(&act_mod_lock);
285 EXPORT_SYMBOL(tcf_unregister_action);
288 static struct tc_action_ops *tc_lookup_action_n(char *kind)
290 struct tc_action_ops *a = NULL;
293 read_lock(&act_mod_lock);
294 for (a = act_base; a; a = a->next) {
295 if (strcmp(kind, a->kind) == 0) {
296 if (!try_module_get(a->owner)) {
297 read_unlock(&act_mod_lock);
303 read_unlock(&act_mod_lock);
308 /* lookup by nlattr */
309 static struct tc_action_ops *tc_lookup_action(struct nlattr *kind)
311 struct tc_action_ops *a = NULL;
314 read_lock(&act_mod_lock);
315 for (a = act_base; a; a = a->next) {
316 if (nla_strcmp(kind, a->kind) == 0) {
317 if (!try_module_get(a->owner)) {
318 read_unlock(&act_mod_lock);
324 read_unlock(&act_mod_lock);
331 static struct tc_action_ops *tc_lookup_action_id(u32 type)
333 struct tc_action_ops *a = NULL;
336 read_lock(&act_mod_lock);
337 for (a = act_base; a; a = a->next) {
338 if (a->type == type) {
339 if (!try_module_get(a->owner)) {
340 read_unlock(&act_mod_lock);
346 read_unlock(&act_mod_lock);
352 int tcf_action_exec(struct sk_buff *skb, struct tc_action *act,
353 struct tcf_result *res)
358 if (skb->tc_verd & TC_NCLS) {
359 skb->tc_verd = CLR_TC_NCLS(skb->tc_verd);
363 while ((a = act) != NULL) {
365 if (a->ops && a->ops->act) {
366 ret = a->ops->act(skb, a, res);
367 if (TC_MUNGED & skb->tc_verd) {
368 /* copied already, allow trampling */
369 skb->tc_verd = SET_TC_OK2MUNGE(skb->tc_verd);
370 skb->tc_verd = CLR_TC_MUNGED(skb->tc_verd);
372 if (ret == TC_ACT_REPEAT)
373 goto repeat; /* we need a ttl - JHS */
374 if (ret != TC_ACT_PIPE)
382 EXPORT_SYMBOL(tcf_action_exec);
384 void tcf_action_destroy(struct tc_action *act, int bind)
388 for (a = act; a; a = act) {
389 if (a->ops && a->ops->cleanup) {
390 if (a->ops->cleanup(a, bind) == ACT_P_DELETED)
391 module_put(a->ops->owner);
394 } else { /*FIXME: Remove later - catch insertion bugs*/
395 printk("tcf_action_destroy: BUG? destroying NULL ops\n");
403 tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
407 if (a->ops == NULL || a->ops->dump == NULL)
409 return a->ops->dump(skb, a, bind, ref);
413 tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
416 unsigned char *b = skb_tail_pointer(skb);
419 if (a->ops == NULL || a->ops->dump == NULL)
422 NLA_PUT(skb, TCA_KIND, IFNAMSIZ, a->ops->kind);
423 if (tcf_action_copy_stats(skb, a, 0))
424 goto nla_put_failure;
425 r = (struct nlattr *)skb_tail_pointer(skb);
426 NLA_PUT(skb, TCA_OPTIONS, 0, NULL);
427 if ((err = tcf_action_dump_old(skb, a, bind, ref)) > 0) {
428 r->nla_len = skb_tail_pointer(skb) - (u8 *)r;
436 EXPORT_SYMBOL(tcf_action_dump_1);
439 tcf_action_dump(struct sk_buff *skb, struct tc_action *act, int bind, int ref)
443 unsigned char *b = skb_tail_pointer(skb);
446 while ((a = act) != NULL) {
447 r = (struct nlattr *)skb_tail_pointer(skb);
449 NLA_PUT(skb, a->order, 0, NULL);
450 err = tcf_action_dump_1(skb, a, bind, ref);
453 r->nla_len = skb_tail_pointer(skb) - (u8 *)r;
465 struct tc_action *tcf_action_init_1(struct nlattr *nla, struct nlattr *est,
466 char *name, int ovr, int bind, int *err)
469 struct tc_action_ops *a_o;
470 char act_name[IFNAMSIZ];
471 struct nlattr *tb[TCA_ACT_MAX+1];
477 if (nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL) < 0)
479 kind = tb[TCA_ACT_KIND];
482 if (nla_strlcpy(act_name, kind, IFNAMSIZ) >= IFNAMSIZ)
485 if (strlcpy(act_name, name, IFNAMSIZ) >= IFNAMSIZ)
489 a_o = tc_lookup_action_n(act_name);
493 request_module("act_%s", act_name);
496 a_o = tc_lookup_action_n(act_name);
498 /* We dropped the RTNL semaphore in order to
499 * perform the module load. So, even if we
500 * succeeded in loading the module we have to
501 * tell the caller to replay the request. We
502 * indicate this using -EAGAIN.
514 a = kzalloc(sizeof(*a), GFP_KERNEL);
518 /* backward compatibility for policer */
520 *err = a_o->init(tb[TCA_ACT_OPTIONS], est, a, ovr, bind);
522 *err = a_o->init(nla, est, a, ovr, bind);
526 /* module count goes up only when brand new policy is created
527 if it exists and is only bound to in a_o->init() then
528 ACT_P_CREATED is not returned (a zero is).
530 if (*err != ACT_P_CREATED)
531 module_put(a_o->owner);
540 module_put(a_o->owner);
545 struct tc_action *tcf_action_init(struct nlattr *nla, struct nlattr *est,
546 char *name, int ovr, int bind, int *err)
548 struct nlattr *tb[TCA_ACT_MAX_PRIO+1];
549 struct tc_action *head = NULL, *act, *act_prev = NULL;
552 if (nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL) < 0) {
557 for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
558 act = tcf_action_init_1(tb[i], est, name, ovr, bind, err);
566 act_prev->next = act;
573 tcf_action_destroy(head, bind);
577 int tcf_action_copy_stats(struct sk_buff *skb, struct tc_action *a,
582 struct tcf_act_hdr *h = a->priv;
587 /* compat_mode being true specifies a call that is supposed
588 * to add additional backward compatiblity statistic TLVs.
591 if (a->type == TCA_OLD_COMPAT)
592 err = gnet_stats_start_copy_compat(skb, 0,
593 TCA_STATS, TCA_XSTATS, &h->tcf_lock, &d);
597 err = gnet_stats_start_copy(skb, TCA_ACT_STATS,
603 if (a->ops != NULL && a->ops->get_stats != NULL)
604 if (a->ops->get_stats(skb, a) < 0)
607 if (gnet_stats_copy_basic(&d, &h->tcf_bstats) < 0 ||
608 gnet_stats_copy_rate_est(&d, &h->tcf_rate_est) < 0 ||
609 gnet_stats_copy_queue(&d, &h->tcf_qstats) < 0)
612 if (gnet_stats_finish_copy(&d) < 0)
622 tca_get_fill(struct sk_buff *skb, struct tc_action *a, u32 pid, u32 seq,
623 u16 flags, int event, int bind, int ref)
626 struct nlmsghdr *nlh;
627 unsigned char *b = skb_tail_pointer(skb);
630 nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*t), flags);
633 t->tca_family = AF_UNSPEC;
637 x = (struct nlattr *)skb_tail_pointer(skb);
638 NLA_PUT(skb, TCA_ACT_TAB, 0, NULL);
640 if (tcf_action_dump(skb, a, bind, ref) < 0)
641 goto nla_put_failure;
643 x->nla_len = skb_tail_pointer(skb) - (u8 *)x;
645 nlh->nlmsg_len = skb_tail_pointer(skb) - b;
655 act_get_notify(u32 pid, struct nlmsghdr *n, struct tc_action *a, int event)
659 skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
662 if (tca_get_fill(skb, a, pid, n->nlmsg_seq, 0, event, 0, 0) <= 0) {
667 return rtnl_unicast(skb, &init_net, pid);
670 static struct tc_action *
671 tcf_action_get_1(struct nlattr *nla, struct nlmsghdr *n, u32 pid, int *err)
673 struct nlattr *tb[TCA_ACT_MAX+1];
678 if (nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL) < 0)
681 if (tb[TCA_ACT_INDEX] == NULL ||
682 nla_len(tb[TCA_ACT_INDEX]) < sizeof(index))
684 index = *(int *)nla_data(tb[TCA_ACT_INDEX]);
687 a = kzalloc(sizeof(struct tc_action), GFP_KERNEL);
692 a->ops = tc_lookup_action(tb[TCA_ACT_KIND]);
695 if (a->ops->lookup == NULL)
698 if (a->ops->lookup(a, index) == 0)
701 module_put(a->ops->owner);
705 module_put(a->ops->owner);
711 static void cleanup_a(struct tc_action *act)
715 for (a = act; a; a = act) {
721 static struct tc_action *create_a(int i)
723 struct tc_action *act;
725 act = kzalloc(sizeof(*act), GFP_KERNEL);
727 printk("create_a: failed to alloc!\n");
734 static int tca_action_flush(struct nlattr *nla, struct nlmsghdr *n, u32 pid)
738 struct nlmsghdr *nlh;
740 struct netlink_callback dcb;
742 struct nlattr *tb[TCA_ACT_MAX+1];
744 struct tc_action *a = create_a(0);
748 printk("tca_action_flush: couldnt create tc_action\n");
752 skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
754 printk("tca_action_flush: failed skb alloc\n");
759 b = skb_tail_pointer(skb);
761 if (nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL) < 0)
764 kind = tb[TCA_ACT_KIND];
765 a->ops = tc_lookup_action(kind);
769 nlh = NLMSG_PUT(skb, pid, n->nlmsg_seq, RTM_DELACTION, sizeof(*t));
771 t->tca_family = AF_UNSPEC;
775 x = (struct nlattr *)skb_tail_pointer(skb);
776 NLA_PUT(skb, TCA_ACT_TAB, 0, NULL);
778 err = a->ops->walk(skb, &dcb, RTM_DELACTION, a);
780 goto nla_put_failure;
782 x->nla_len = skb_tail_pointer(skb) - (u8 *)x;
784 nlh->nlmsg_len = skb_tail_pointer(skb) - b;
785 nlh->nlmsg_flags |= NLM_F_ROOT;
786 module_put(a->ops->owner);
788 err = rtnetlink_send(skb, &init_net, pid, RTNLGRP_TC, n->nlmsg_flags&NLM_F_ECHO);
796 module_put(a->ops->owner);
804 tca_action_gd(struct nlattr *nla, struct nlmsghdr *n, u32 pid, int event)
807 struct nlattr *tb[TCA_ACT_MAX_PRIO+1];
808 struct tc_action *head = NULL, *act, *act_prev = NULL;
810 if (nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL) < 0)
813 if (event == RTM_DELACTION && n->nlmsg_flags&NLM_F_ROOT) {
814 if (tb[0] != NULL && tb[1] == NULL)
815 return tca_action_flush(tb[0], n, pid);
818 for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
819 act = tcf_action_get_1(tb[i], n, pid, &ret);
827 act_prev->next = act;
831 if (event == RTM_GETACTION)
832 ret = act_get_notify(pid, n, head, event);
836 skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
842 if (tca_get_fill(skb, head, pid, n->nlmsg_seq, 0, event,
849 /* now do the delete */
850 tcf_action_destroy(head, 0);
851 ret = rtnetlink_send(skb, &init_net, pid, RTNLGRP_TC,
852 n->nlmsg_flags&NLM_F_ECHO);
862 static int tcf_add_notify(struct tc_action *a, u32 pid, u32 seq, int event,
866 struct nlmsghdr *nlh;
872 skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
876 b = skb_tail_pointer(skb);
878 nlh = NLMSG_NEW(skb, pid, seq, event, sizeof(*t), flags);
880 t->tca_family = AF_UNSPEC;
884 x = (struct nlattr *)skb_tail_pointer(skb);
885 NLA_PUT(skb, TCA_ACT_TAB, 0, NULL);
887 if (tcf_action_dump(skb, a, 0, 0) < 0)
888 goto nla_put_failure;
890 x->nla_len = skb_tail_pointer(skb) - (u8 *)x;
892 nlh->nlmsg_len = skb_tail_pointer(skb) - b;
893 NETLINK_CB(skb).dst_group = RTNLGRP_TC;
895 err = rtnetlink_send(skb, &init_net, pid, RTNLGRP_TC, flags&NLM_F_ECHO);
908 tcf_action_add(struct nlattr *nla, struct nlmsghdr *n, u32 pid, int ovr)
911 struct tc_action *act;
913 u32 seq = n->nlmsg_seq;
915 act = tcf_action_init(nla, NULL, NULL, ovr, 0, &ret);
919 /* dump then free all the actions after update; inserted policy
922 ret = tcf_add_notify(act, pid, seq, RTM_NEWACTION, n->nlmsg_flags);
923 for (a = act; a; a = act) {
931 static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n, void *arg)
933 struct net *net = skb->sk->sk_net;
934 struct nlattr *tca[TCA_ACT_MAX + 1];
935 u32 pid = skb ? NETLINK_CB(skb).pid : 0;
936 int ret = 0, ovr = 0;
938 if (net != &init_net)
941 ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ACT_MAX, NULL);
945 if (tca[TCA_ACT_TAB] == NULL) {
946 printk("tc_ctl_action: received NO action attribs\n");
950 /* n->nlmsg_flags&NLM_F_CREATE
952 switch (n->nlmsg_type) {
954 /* we are going to assume all other flags
955 * imply create only if it doesnt exist
956 * Note that CREATE | EXCL implies that
957 * but since we want avoid ambiguity (eg when flags
958 * is zero) then just set this
960 if (n->nlmsg_flags&NLM_F_REPLACE)
963 ret = tcf_action_add(tca[TCA_ACT_TAB], n, pid, ovr);
968 ret = tca_action_gd(tca[TCA_ACT_TAB], n, pid, RTM_DELACTION);
971 ret = tca_action_gd(tca[TCA_ACT_TAB], n, pid, RTM_GETACTION);
980 static struct nlattr *
981 find_dump_kind(struct nlmsghdr *n)
983 struct nlattr *tb1, *tb2[TCA_ACT_MAX+1];
984 struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
985 struct nlattr *nla[TCAA_MAX + 1];
987 int min_len = NLMSG_LENGTH(sizeof(struct tcamsg));
988 int attrlen = n->nlmsg_len - NLMSG_ALIGN(min_len);
989 struct nlattr *attr = (void *) n + NLMSG_ALIGN(min_len);
991 if (nla_parse(nla, TCAA_MAX, attr, attrlen, NULL) < 0)
993 tb1 = nla[TCA_ACT_TAB];
997 if (nla_parse(tb, TCA_ACT_MAX_PRIO, nla_data(tb1),
998 NLMSG_ALIGN(nla_len(tb1)), NULL) < 0)
1003 if (nla_parse(tb2, TCA_ACT_MAX, nla_data(tb[1]),
1004 nla_len(tb[1]), NULL) < 0)
1006 kind = tb2[TCA_ACT_KIND];
1012 tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
1014 struct net *net = skb->sk->sk_net;
1015 struct nlmsghdr *nlh;
1016 unsigned char *b = skb_tail_pointer(skb);
1018 struct tc_action_ops *a_o;
1021 struct tcamsg *t = (struct tcamsg *) NLMSG_DATA(cb->nlh);
1022 struct nlattr *kind = find_dump_kind(cb->nlh);
1024 if (net != &init_net)
1028 printk("tc_dump_action: action bad kind\n");
1032 a_o = tc_lookup_action(kind);
1037 memset(&a, 0, sizeof(struct tc_action));
1040 if (a_o->walk == NULL) {
1041 printk("tc_dump_action: %s !capable of dumping table\n", a_o->kind);
1042 goto nla_put_failure;
1045 nlh = NLMSG_PUT(skb, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
1046 cb->nlh->nlmsg_type, sizeof(*t));
1047 t = NLMSG_DATA(nlh);
1048 t->tca_family = AF_UNSPEC;
1052 x = (struct nlattr *)skb_tail_pointer(skb);
1053 NLA_PUT(skb, TCA_ACT_TAB, 0, NULL);
1055 ret = a_o->walk(skb, cb, RTM_GETACTION, &a);
1057 goto nla_put_failure;
1060 x->nla_len = skb_tail_pointer(skb) - (u8 *)x;
1065 nlh->nlmsg_len = skb_tail_pointer(skb) - b;
1066 if (NETLINK_CB(cb->skb).pid && ret)
1067 nlh->nlmsg_flags |= NLM_F_MULTI;
1068 module_put(a_o->owner);
1073 module_put(a_o->owner);
1078 static int __init tc_action_init(void)
1080 rtnl_register(PF_UNSPEC, RTM_NEWACTION, tc_ctl_action, NULL);
1081 rtnl_register(PF_UNSPEC, RTM_DELACTION, tc_ctl_action, NULL);
1082 rtnl_register(PF_UNSPEC, RTM_GETACTION, tc_ctl_action, tc_dump_action);
1087 subsys_initcall(tc_action_init);