Release 4.14 net/sched/act_api.c
/*
* net/sched/act_api.c Packet action API.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
* Author: Jamal Hadi Salim
*
*
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/kmod.h>
#include <linux/err.h>
#include <linux/module.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/sch_generic.h>
#include <net/pkt_cls.h>
#include <net/act_api.h>
#include <net/netlink.h>
static int tcf_action_goto_chain_init(struct tc_action *a, struct tcf_proto *tp)
{
u32 chain_index = a->tcfa_action & TC_ACT_EXT_VAL_MASK;
if (!tp)
return -EINVAL;
a->goto_chain = tcf_chain_get(tp->chain->block, chain_index, true);
if (!a->goto_chain)
return -ENOMEM;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 63 | 96.92% | 1 | 50.00% |
Américo Wang | 2 | 3.08% | 1 | 50.00% |
Total | 65 | 100.00% | 2 | 100.00% |
static void tcf_action_goto_chain_fini(struct tc_action *a)
{
tcf_chain_put(a->goto_chain);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 18 | 100.00% | 1 | 100.00% |
Total | 18 | 100.00% | 1 | 100.00% |
static void tcf_action_goto_chain_exec(const struct tc_action *a,
struct tcf_result *res)
{
const struct tcf_chain *chain = a->goto_chain;
res->goto_tp = rcu_dereference_bh(chain->filter_chain);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 38 | 100.00% | 1 | 100.00% |
Total | 38 | 100.00% | 1 | 100.00% |
/* XXX: For standalone actions, we don't need a RCU grace period either, because
* actions are always connected to filters and filters are already destroyed in
* RCU callbacks, so after a RCU grace period actions are already disconnected
* from filters. Readers later can not find us.
*/
static void free_tcf(struct tc_action *p)
{
free_percpu(p->cpu_bstats);
free_percpu(p->cpu_qstats);
if (p->act_cookie) {
kfree(p->act_cookie->data);
kfree(p->act_cookie);
}
if (p->goto_chain)
tcf_action_goto_chain_fini(p);
kfree(p);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Eric Dumazet | 27 | 41.54% | 1 | 20.00% |
Jamal Hadi Salim | 24 | 36.92% | 1 | 20.00% |
Jiri Pirko | 11 | 16.92% | 1 | 20.00% |
Américo Wang | 3 | 4.62% | 2 | 40.00% |
Total | 65 | 100.00% | 5 | 100.00% |
static void tcf_idr_remove(struct tcf_idrinfo *idrinfo, struct tc_action *p)
{
spin_lock_bh(&idrinfo->lock);
idr_remove_ext(&idrinfo->action_idr, p->tcfa_index);
spin_unlock_bh(&idrinfo->lock);
gen_kill_estimator(&p->tcfa_rate_est);
free_tcf(p);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 28 | 49.12% | 1 | 11.11% |
Américo Wang | 17 | 29.82% | 6 | 66.67% |
Chris Mi | 11 | 19.30% | 1 | 11.11% |
Alexei Starovoitov | 1 | 1.75% | 1 | 11.11% |
Total | 57 | 100.00% | 9 | 100.00% |
int __tcf_idr_release(struct tc_action *p, bool bind, bool strict)
{
int ret = 0;
ASSERT_RTNL();
if (p) {
if (bind)
p->tcfa_bindcnt--;
else if (strict && p->tcfa_bindcnt > 0)
return -EPERM;
p->tcfa_refcnt--;
if (p->tcfa_bindcnt <= 0 && p->tcfa_refcnt <= 0) {
if (p->ops->cleanup)
p->ops->cleanup(p, bind);
tcf_idr_remove(p->idrinfo, p);
ret = ACT_P_DELETED;
}
}
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 55 | 50.00% | 1 | 10.00% |
Américo Wang | 46 | 41.82% | 7 | 70.00% |
Daniel Borkmann | 6 | 5.45% | 1 | 10.00% |
Chris Mi | 3 | 2.73% | 1 | 10.00% |
Total | 110 | 100.00% | 10 | 100.00% |
EXPORT_SYMBOL(__tcf_idr_release);
static int tcf_dump_walker(struct tcf_idrinfo *idrinfo, struct sk_buff *skb,
struct netlink_callback *cb)
{
int err = 0, index = -1, s_i = 0, n_i = 0;
u32 act_flags = cb->args[2];
unsigned long jiffy_since = cb->args[3];
struct nlattr *nest;
struct idr *idr = &idrinfo->action_idr;
struct tc_action *p;
unsigned long id = 1;
spin_lock_bh(&idrinfo->lock);
s_i = cb->args[0];
idr_for_each_entry_ext(idr, p, id) {
index++;
if (index < s_i)
continue;
if (jiffy_since &&
time_after(jiffy_since,
(unsigned long)p->tcfa_tm.lastuse))
continue;
nest = nla_nest_start(skb, n_i);
if (!nest)
goto nla_put_failure;
err = tcf_action_dump_1(skb, p, 0, 0);
if (err < 0) {
index--;
nlmsg_trim(skb, nest);
goto done;
}
nla_nest_end(skb, nest);
n_i++;
if (!(act_flags & TCA_FLAG_LARGE_DUMP_ON) &&
n_i >= TCA_ACT_MAX_PRIO)
goto done;
}
done:
if (index >= 0)
cb->args[0] = index + 1;
spin_unlock_bh(&idrinfo->lock);
if (n_i) {
if (act_flags & TCA_FLAG_LARGE_DUMP_ON)
cb->args[1] = n_i;
}
return n_i;
nla_put_failure:
nla_nest_cancel(skb, nest);
goto done;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 137 | 48.41% | 1 | 7.69% |
Jamal Hadi Salim | 82 | 28.98% | 2 | 15.38% |
Chris Mi | 29 | 10.25% | 1 | 7.69% |
Patrick McHardy | 18 | 6.36% | 2 | 15.38% |
Américo Wang | 14 | 4.95% | 5 | 38.46% |
Arnaldo Carvalho de Melo | 3 | 1.06% | 2 | 15.38% |
Total | 283 | 100.00% | 13 | 100.00% |
static int tcf_del_walker(struct tcf_idrinfo *idrinfo, struct sk_buff *skb,
const struct tc_action_ops *ops)
{
struct nlattr *nest;
int n_i = 0;
int ret = -EINVAL;
struct idr *idr = &idrinfo->action_idr;
struct tc_action *p;
unsigned long id = 1;
nest = nla_nest_start(skb, 0);
if (nest == NULL)
goto nla_put_failure;
if (nla_put_string(skb, TCA_KIND, ops->kind))
goto nla_put_failure;
idr_for_each_entry_ext(idr, p, id) {
ret = __tcf_idr_release(p, false, true);
if (ret == ACT_P_DELETED) {
module_put(ops->owner);
n_i++;
} else if (ret < 0) {
goto nla_put_failure;
}
}
if (nla_put_u32(skb, TCA_FCNT, n_i))
goto nla_put_failure;
nla_nest_end(skb, nest);
return n_i;
nla_put_failure:
nla_nest_cancel(skb, nest);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 88 | 48.89% | 2 | 15.38% |
Américo Wang | 38 | 21.11% | 5 | 38.46% |
Chris Mi | 28 | 15.56% | 1 | 7.69% |
Patrick McHardy | 19 | 10.56% | 2 | 15.38% |
Daniel Borkmann | 3 | 1.67% | 1 | 7.69% |
Jamal Hadi Salim | 2 | 1.11% | 1 | 7.69% |
Arnaldo Carvalho de Melo | 2 | 1.11% | 1 | 7.69% |
Total | 180 | 100.00% | 13 | 100.00% |
int tcf_generic_walker(struct tc_action_net *tn, struct sk_buff *skb,
struct netlink_callback *cb, int type,
const struct tc_action_ops *ops)
{
struct tcf_idrinfo *idrinfo = tn->idrinfo;
if (type == RTM_DELACTION) {
return tcf_del_walker(idrinfo, skb, ops);
} else if (type == RTM_GETACTION) {
return tcf_dump_walker(idrinfo, skb, cb);
} else {
WARN(1, "tcf_generic_walker: unknown action %d\n", type);
return -EINVAL;
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 66 | 72.53% | 1 | 20.00% |
Américo Wang | 17 | 18.68% | 2 | 40.00% |
Chris Mi | 5 | 5.49% | 1 | 20.00% |
Stephen Hemminger | 3 | 3.30% | 1 | 20.00% |
Total | 91 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL(tcf_generic_walker);
static struct tc_action *tcf_idr_lookup(u32 index, struct tcf_idrinfo *idrinfo)
{
struct tc_action *p = NULL;
spin_lock_bh(&idrinfo->lock);
p = idr_find_ext(&idrinfo->action_idr, index);
spin_unlock_bh(&idrinfo->lock);
return p;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 32 | 59.26% | 1 | 16.67% |
Américo Wang | 11 | 20.37% | 4 | 66.67% |
Chris Mi | 11 | 20.37% | 1 | 16.67% |
Total | 54 | 100.00% | 6 | 100.00% |
int tcf_idr_search(struct tc_action_net *tn, struct tc_action **a, u32 index)
{
struct tcf_idrinfo *idrinfo = tn->idrinfo;
struct tc_action *p = tcf_idr_lookup(index, idrinfo);
if (p) {
*a = p;
return 1;
}
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 41 | 71.93% | 1 | 20.00% |
Américo Wang | 10 | 17.54% | 3 | 60.00% |
Chris Mi | 6 | 10.53% | 1 | 20.00% |
Total | 57 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL(tcf_idr_search);
bool tcf_idr_check(struct tc_action_net *tn, u32 index, struct tc_action **a,
int bind)
{
struct tcf_idrinfo *idrinfo = tn->idrinfo;
struct tc_action *p = tcf_idr_lookup(index, idrinfo);
if (index && p) {
if (bind)
p->tcfa_bindcnt++;
p->tcfa_refcnt++;
*a = p;
return true;
}
return false;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
David S. Miller | 44 | 57.89% | 1 | 12.50% |
Américo Wang | 22 | 28.95% | 6 | 75.00% |
Chris Mi | 10 | 13.16% | 1 | 12.50% |
Total | 76 | 100.00% | 8 | 100.00% |
EXPORT_SYMBOL(tcf_idr_check);
void tcf_idr_cleanup(struct tc_action *a, struct nlattr *est)
{
if (est)
gen_kill_estimator(&a->tcfa_rate_est);
free_tcf(a);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 31 | 96.88% | 3 | 75.00% |
Chris Mi | 1 | 3.12% | 1 | 25.00% |
Total | 32 | 100.00% | 4 | 100.00% |
EXPORT_SYMBOL(tcf_idr_cleanup);
int tcf_idr_create(struct tc_action_net *tn, u32 index, struct nlattr *est,
struct tc_action **a, const struct tc_action_ops *ops,
int bind, bool cpustats)
{
struct tc_action *p = kzalloc(ops->size, GFP_KERNEL);
struct tcf_idrinfo *idrinfo = tn->idrinfo;
struct idr *idr = &idrinfo->action_idr;
int err = -ENOMEM;
unsigned long idr_index;
if (unlikely(!p))
return -ENOMEM;
p->tcfa_refcnt = 1;
if (bind)
p->tcfa_bindcnt = 1;
if (cpustats) {
p->cpu_bstats = netdev_alloc_pcpu_stats(struct gnet_stats_basic_cpu);
if (!p->cpu_bstats) {
err1:
kfree(p);
return err;
}
p->cpu_qstats = alloc_percpu(struct gnet_stats_queue);
if (!p->cpu_qstats) {
err2:
free_percpu(p->cpu_bstats);
goto err1;
}
}
spin_lock_init(&p->tcfa_lock);
/* user doesn't specify an index */
if (!index) {
idr_preload(GFP_KERNEL);
spin_lock_bh(&idrinfo->lock);
err = idr_alloc_ext(idr, NULL, &idr_index, 1, 0,
GFP_ATOMIC);
spin_unlock_bh(&idrinfo->lock);
idr_preload_end();
if (err) {
err3:
free_percpu(p->cpu_qstats);
goto err2;
}
p->tcfa_index = idr_index;
} else {
idr_preload(GFP_KERNEL);
spin_lock_bh(&idrinfo->lock);
err = idr_alloc_ext(idr, NULL, NULL, index, index + 1,
GFP_ATOMIC);
spin_unlock_bh(&idrinfo->lock);
idr_preload_end();
if (err)
goto err3;
p->tcfa_index = index;
}
p->tcfa_tm.install = jiffies;
p->tcfa_tm.lastuse = jiffies;
p->tcfa_tm.firstuse = 0;
if (est) {
err = gen_new_estimator(&p->tcfa_bstats, p->cpu_bstats,
&p->tcfa_rate_est,
&p->tcfa_lock, NULL, est);
if (err) {
goto err3;
}
}
p->idrinfo = idrinfo;
p->ops = ops;
INIT_LIST_HEAD(&p->list);
*a = p;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Chris Mi | 121 | 29.58% | 1 | 5.88% |
David S. Miller | 103 | 25.18% | 1 | 5.88% |
Eric Dumazet | 84 | 20.54% | 2 | 11.76% |
Américo Wang | 59 | 14.43% | 6 | 35.29% |
Jakub Kiciński | 18 | 4.40% | 1 | 5.88% |
Stephen Hemminger | 11 | 2.69% | 1 | 5.88% |
Jamal Hadi Salim | 10 | 2.44% | 2 | 11.76% |
Patrick McHardy | 2 | 0.49% | 2 | 11.76% |
John Fastabend | 1 | 0.24% | 1 | 5.88% |
Total | 409 | 100.00% | 17 | 100.00% |
EXPORT_SYMBOL(tcf_idr_create);
void tcf_idr_insert(struct tc_action_net *tn, struct tc_action *a)
{
struct tcf_idrinfo *idrinfo = tn->idrinfo;
spin_lock_bh(&idrinfo->lock);
idr_replace_ext(&idrinfo->action_idr, a, a->tcfa_index);
spin_unlock_bh(&idrinfo->lock);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 22 | 40.74% | 4 | 57.14% |
David S. Miller | 18 | 33.33% | 1 | 14.29% |
Chris Mi | 13 | 24.07% | 1 | 14.29% |
Jamal Hadi Salim | 1 | 1.85% | 1 | 14.29% |
Total | 54 | 100.00% | 7 | 100.00% |
EXPORT_SYMBOL(tcf_idr_insert);
void tcf_idrinfo_destroy(const struct tc_action_ops *ops,
struct tcf_idrinfo *idrinfo)
{
struct idr *idr = &idrinfo->action_idr;
struct tc_action *p;
int ret;
unsigned long id = 1;
idr_for_each_entry_ext(idr, p, id) {
ret = __tcf_idr_release(p, false, true);
if (ret == ACT_P_DELETED)
module_put(ops->owner);
else if (ret < 0)
return;
}
idr_destroy(&idrinfo->action_idr);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 61 | 67.78% | 4 | 80.00% |
Chris Mi | 29 | 32.22% | 1 | 20.00% |
Total | 90 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL(tcf_idrinfo_destroy);
static LIST_HEAD(act_base);
static DEFINE_RWLOCK(act_mod_lock);
int tcf_register_action(struct tc_action_ops *act,
struct pernet_operations *ops)
{
struct tc_action_ops *a;
int ret;
if (!act->act || !act->dump || !act->init || !act->walk || !act->lookup)
return -EINVAL;
/* We have to register pernet ops before making the action ops visible,
* otherwise tcf_action_init_1() could get a partially initialized
* netns.
*/
ret = register_pernet_subsys(ops);
if (ret)
return ret;
write_lock(&act_mod_lock);
list_for_each_entry(a, &act_base, head) {
if (act->type == a->type || (strcmp(act->kind, a->kind) == 0)) {
write_unlock(&act_mod_lock);
unregister_pernet_subsys(ops);
return -EEXIST;
}
}
list_add_tail(&act->head, &act_base);
write_unlock(&act_mod_lock);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 92 | 62.59% | 4 | 50.00% |
Américo Wang | 55 | 37.41% | 4 | 50.00% |
Total | 147 | 100.00% | 8 | 100.00% |
EXPORT_SYMBOL(tcf_register_action);
int tcf_unregister_action(struct tc_action_ops *act,
struct pernet_operations *ops)
{
struct tc_action_ops *a;
int err = -ENOENT;
write_lock(&act_mod_lock);
list_for_each_entry(a, &act_base, head) {
if (a == act) {
list_del(&act->head);
err = 0;
break;
}
}
write_unlock(&act_mod_lock);
if (!err)
unregister_pernet_subsys(ops);
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 50 | 60.98% | 1 | 20.00% |
Américo Wang | 29 | 35.37% | 3 | 60.00% |
Eric Dumazet | 3 | 3.66% | 1 | 20.00% |
Total | 82 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL(tcf_unregister_action);
/* lookup by name */
static struct tc_action_ops *tc_lookup_action_n(char *kind)
{
struct tc_action_ops *a, *res = NULL;
if (kind) {
read_lock(&act_mod_lock);
list_for_each_entry(a, &act_base, head) {
if (strcmp(kind, a->kind) == 0) {
if (try_module_get(a->owner))
res = a;
break;
}
}
read_unlock(&act_mod_lock);
}
return res;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 66 | 80.49% | 2 | 40.00% |
Américo Wang | 8 | 9.76% | 1 | 20.00% |
Eric Dumazet | 7 | 8.54% | 1 | 20.00% |
Patrick McHardy | 1 | 1.22% | 1 | 20.00% |
Total | 82 | 100.00% | 5 | 100.00% |
/* lookup by nlattr */
static struct tc_action_ops *tc_lookup_action(struct nlattr *kind)
{
struct tc_action_ops *a, *res = NULL;
if (kind) {
read_lock(&act_mod_lock);
list_for_each_entry(a, &act_base, head) {
if (nla_strcmp(kind, a->kind) == 0) {
if (try_module_get(a->owner))
res = a;
break;
}
}
read_unlock(&act_mod_lock);
}
return res;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 65 | 78.31% | 2 | 33.33% |
Américo Wang | 8 | 9.64% | 1 | 16.67% |
Eric Dumazet | 7 | 8.43% | 1 | 16.67% |
Patrick McHardy | 3 | 3.61% | 2 | 33.33% |
Total | 83 | 100.00% | 6 | 100.00% |
/*TCA_ACT_MAX_PRIO is 32, there count upto 32 */
#define TCA_ACT_MAX_PRIO_MASK 0x1FF
int tcf_action_exec(struct sk_buff *skb, struct tc_action **actions,
int nr_actions, struct tcf_result *res)
{
u32 jmp_prgcnt = 0;
u32 jmp_ttl = TCA_ACT_MAX_PRIO; /*matches actions per filter */
int i;
int ret = TC_ACT_OK;
if (skb_skip_tc_classify(skb))
return TC_ACT_OK;
restart_act_graph:
for (i = 0; i < nr_actions; i++) {
const struct tc_action *a = actions[i];
if (jmp_prgcnt > 0) {
jmp_prgcnt -= 1;
continue;
}
repeat:
ret = a->ops->act(skb, a, res);
if (ret == TC_ACT_REPEAT)
goto repeat; /* we need a ttl - JHS */
if (TC_ACT_EXT_CMP(ret, TC_ACT_JUMP)) {
jmp_prgcnt = ret & TCA_ACT_MAX_PRIO_MASK;
if (!jmp_prgcnt || (jmp_prgcnt > nr_actions)) {
/* faulty opcode, stop pipeline */
return TC_ACT_OK;
} else {
jmp_ttl -= 1;
if (jmp_ttl > 0)
goto restart_act_graph;
else /* faulty graph, stop pipeline */
return TC_ACT_OK;
}
} else if (TC_ACT_EXT_CMP(ret, TC_ACT_GOTO_CHAIN)) {
tcf_action_goto_chain_exec(a, res);
}
if (ret != TC_ACT_PIPE)
break;
}
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 132 | 64.39% | 3 | 27.27% |
Jiri Pirko | 31 | 15.12% | 3 | 27.27% |
Américo Wang | 30 | 14.63% | 2 | 18.18% |
Willem de Bruijn | 5 | 2.44% | 1 | 9.09% |
David S. Miller | 5 | 2.44% | 1 | 9.09% |
Patrick McHardy | 2 | 0.98% | 1 | 9.09% |
Total | 205 | 100.00% | 11 | 100.00% |
EXPORT_SYMBOL(tcf_action_exec);
int tcf_action_destroy(struct list_head *actions, int bind)
{
const struct tc_action_ops *ops;
struct tc_action *a, *tmp;
int ret = 0;
list_for_each_entry_safe(a, tmp, actions, list) {
ops = a->ops;
ret = __tcf_idr_release(a, bind, true);
if (ret == ACT_P_DELETED)
module_put(ops->owner);
else if (ret < 0)
return ret;
}
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 40 | 45.98% | 2 | 25.00% |
Jamal Hadi Salim | 30 | 34.48% | 2 | 25.00% |
Jiri Pirko | 12 | 13.79% | 1 | 12.50% |
Patrick McHardy | 2 | 2.30% | 1 | 12.50% |
Daniel Borkmann | 2 | 2.30% | 1 | 12.50% |
Chris Mi | 1 | 1.15% | 1 | 12.50% |
Total | 87 | 100.00% | 8 | 100.00% |
int
tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
{
return a->ops->dump(skb, a, bind, ref);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 37 | 100.00% | 1 | 100.00% |
Total | 37 | 100.00% | 1 | 100.00% |
int
tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int bind, int ref)
{
int err = -EINVAL;
unsigned char *b = skb_tail_pointer(skb);
struct nlattr *nest;
if (nla_put_string(skb, TCA_KIND, a->ops->kind))
goto nla_put_failure;
if (tcf_action_copy_stats(skb, a, 0))
goto nla_put_failure;
if (a->act_cookie) {
if (nla_put(skb, TCA_ACT_COOKIE, a->act_cookie->len,
a->act_cookie->data))
goto nla_put_failure;
}
nest = nla_nest_start(skb, TCA_OPTIONS);
if (nest == NULL)
goto nla_put_failure;
err = tcf_action_dump_old(skb, a, bind, ref);
if (err > 0) {
nla_nest_end(skb, nest);
return err;
}
nla_put_failure:
nlmsg_trim(skb, b);
return -1;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 135 | 80.36% | 2 | 22.22% |
Patrick McHardy | 16 | 9.52% | 2 | 22.22% |
Arnaldo Carvalho de Melo | 6 | 3.57% | 2 | 22.22% |
David S. Miller | 5 | 2.98% | 1 | 11.11% |
Eric Dumazet | 4 | 2.38% | 1 | 11.11% |
Thomas Graf | 2 | 1.19% | 1 | 11.11% |
Total | 168 | 100.00% | 9 | 100.00% |
EXPORT_SYMBOL(tcf_action_dump_1);
int tcf_action_dump(struct sk_buff *skb, struct list_head *actions,
int bind, int ref)
{
struct tc_action *a;
int err = -EINVAL;
struct nlattr *nest;
list_for_each_entry(a, actions, list) {
nest = nla_nest_start(skb, a->order);
if (nest == NULL)
goto nla_put_failure;
err = tcf_action_dump_1(skb, a, bind, ref);
if (err < 0)
goto errout;
nla_nest_end(skb, nest);
}
return 0;
nla_put_failure:
err = -EINVAL;
errout:
nla_nest_cancel(skb, nest);
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 76 | 64.41% | 2 | 25.00% |
Patrick McHardy | 22 | 18.64% | 3 | 37.50% |
Américo Wang | 10 | 8.47% | 1 | 12.50% |
Thomas Graf | 8 | 6.78% | 1 | 12.50% |
Arnaldo Carvalho de Melo | 2 | 1.69% | 1 | 12.50% |
Total | 118 | 100.00% | 8 | 100.00% |
static struct tc_cookie *nla_memdup_cookie(struct nlattr **tb)
{
struct tc_cookie *c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c)
return NULL;
c->data = nla_memdup(tb[TCA_ACT_COOKIE], GFP_KERNEL);
if (!c->data) {
kfree(c);
return NULL;
}
c->len = nla_len(tb[TCA_ACT_COOKIE]);
return c;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 65 | 77.38% | 1 | 33.33% |
Wolfgang Bumiller | 18 | 21.43% | 1 | 33.33% |
Wei Yongjun | 1 | 1.19% | 1 | 33.33% |
Total | 84 | 100.00% | 3 | 100.00% |
struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
struct nlattr *nla, struct nlattr *est,
char *name, int ovr, int bind)
{
struct tc_action *a;
struct tc_action_ops *a_o;
struct tc_cookie *cookie = NULL;
char act_name[IFNAMSIZ];
struct nlattr *tb[TCA_ACT_MAX + 1];
struct nlattr *kind;
int err;
if (name == NULL) {
err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL, NULL);
if (err < 0)
goto err_out;
err = -EINVAL;
kind = tb[TCA_ACT_KIND];
if (kind == NULL)
goto err_out;
if (nla_strlcpy(act_name, kind, IFNAMSIZ) >= IFNAMSIZ)
goto err_out;
if (tb[TCA_ACT_COOKIE]) {
int cklen = nla_len(tb[TCA_ACT_COOKIE]);
if (cklen > TC_COOKIE_MAX_SIZE)
goto err_out;
cookie = nla_memdup_cookie(tb);
if (!cookie) {
err = -ENOMEM;
goto err_out;
}
}
} else {
err = -EINVAL;
if (strlcpy(act_name, name, IFNAMSIZ) >= IFNAMSIZ)
goto err_out;
}
a_o = tc_lookup_action_n(act_name);
if (a_o == NULL) {
#ifdef CONFIG_MODULES
rtnl_unlock();
request_module("act_%s", act_name);
rtnl_lock();
a_o = tc_lookup_action_n(act_name);
/* We dropped the RTNL semaphore in order to
* perform the module load. So, even if we
* succeeded in loading the module we have to
* tell the caller to replay the request. We
* indicate this using -EAGAIN.
*/
if (a_o != NULL) {
err = -EAGAIN;
goto err_mod;
}
#endif
err = -ENOENT;
goto err_out;
}
/* backward compatibility for policer */
if (name == NULL)
err = a_o->init(net, tb[TCA_ACT_OPTIONS], est, &a, ovr, bind);
else
err = a_o->init(net, nla, est, &a, ovr, bind);
if (err < 0)
goto err_mod;
if (name == NULL && tb[TCA_ACT_COOKIE]) {
if (a->act_cookie) {
kfree(a->act_cookie->data);
kfree(a->act_cookie);
}
a->act_cookie = cookie;
}
/* module count goes up only when brand new policy is created
* if it exists and is only bound to in a_o->init() then
* ACT_P_CREATED is not returned (a zero is).
*/
if (err != ACT_P_CREATED)
module_put(a_o->owner);
if (TC_ACT_EXT_CMP(a->tcfa_action, TC_ACT_GOTO_CHAIN)) {
err = tcf_action_goto_chain_init(a, tp);
if (err) {
LIST_HEAD(actions);
list_add_tail(&a->list, &actions);
tcf_action_destroy(&actions, bind);
return ERR_PTR(err);
}
}
return a;
err_mod:
module_put(a_o->owner);
err_out:
if (cookie) {
kfree(cookie->data);
kfree(cookie);
}
return ERR_PTR(err);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 218 | 43.60% | 3 | 13.64% |
Patrick McHardy | 101 | 20.20% | 9 | 40.91% |
Wolfgang Bumiller | 96 | 19.20% | 1 | 4.55% |
Jiri Pirko | 63 | 12.60% | 2 | 9.09% |
Benjamin LaHaise | 9 | 1.80% | 1 | 4.55% |
Thomas Graf | 5 | 1.00% | 1 | 4.55% |
Johannes Berg | 3 | 0.60% | 2 | 9.09% |
Américo Wang | 3 | 0.60% | 1 | 4.55% |
Roman Mashak | 1 | 0.20% | 1 | 4.55% |
Eric Dumazet | 1 | 0.20% | 1 | 4.55% |
Total | 500 | 100.00% | 22 | 100.00% |
static void cleanup_a(struct list_head *actions, int ovr)
{
struct tc_action *a;
if (!ovr)
return;
list_for_each_entry(a, actions, list)
a->tcfa_refcnt--;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 38 | 100.00% | 1 | 100.00% |
Total | 38 | 100.00% | 1 | 100.00% |
int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
struct nlattr *est, char *name, int ovr, int bind,
struct list_head *actions)
{
struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
struct tc_action *act;
int err;
int i;
err = nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL, NULL);
if (err < 0)
return err;
for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
act = tcf_action_init_1(net, tp, tb[i], est, name, ovr, bind);
if (IS_ERR(act)) {
err = PTR_ERR(act);
goto err;
}
act->order = i;
if (ovr)
act->tcfa_refcnt++;
list_add_tail(&act->list, actions);
}
/* Remove the temp refcnt which was necessary to protect against
* destroying an existing action which was being replaced
*/
cleanup_a(actions, ovr);
return 0;
err:
tcf_action_destroy(actions, bind);
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 113 | 58.25% | 2 | 18.18% |
Patrick McHardy | 40 | 20.62% | 5 | 45.45% |
Américo Wang | 25 | 12.89% | 1 | 9.09% |
Benjamin LaHaise | 7 | 3.61% | 1 | 9.09% |
Jiri Pirko | 7 | 3.61% | 1 | 9.09% |
Johannes Berg | 2 | 1.03% | 1 | 9.09% |
Total | 194 | 100.00% | 11 | 100.00% |
int tcf_action_copy_stats(struct sk_buff *skb, struct tc_action *p,
int compat_mode)
{
int err = 0;
struct gnet_dump d;
if (p == NULL)
goto errout;
/* compat_mode being true specifies a call that is supposed
* to add additional backward compatibility statistic TLVs.
*/
if (compat_mode) {
if (p->type == TCA_OLD_COMPAT)
err = gnet_stats_start_copy_compat(skb, 0,
TCA_STATS,
TCA_XSTATS,
&p->tcfa_lock, &d,
TCA_PAD);
else
return 0;
} else
err = gnet_stats_start_copy(skb, TCA_ACT_STATS,
&p->tcfa_lock, &d, TCA_ACT_PAD);
if (err < 0)
goto errout;
if (gnet_stats_copy_basic(NULL, &d, p->cpu_bstats, &p->tcfa_bstats) < 0 ||
gnet_stats_copy_rate_est(&d, &p->tcfa_rate_est) < 0 ||
gnet_stats_copy_queue(&d, p->cpu_qstats,
&p->tcfa_qstats,
p->tcfa_qstats.qlen) < 0)
goto errout;
if (gnet_stats_finish_copy(&d) < 0)
goto errout;
return 0;
errout:
return -1;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Thomas Graf | 134 | 70.90% | 4 | 25.00% |
Jamal Hadi Salim | 17 | 8.99% | 1 | 6.25% |
Américo Wang | 14 | 7.41% | 2 | 12.50% |
Eric Dumazet | 8 | 4.23% | 2 | 12.50% |
John Fastabend | 7 | 3.70% | 3 | 18.75% |
Nicolas Dichtel | 4 | 2.12% | 1 | 6.25% |
Patrick McHardy | 4 | 2.12% | 2 | 12.50% |
Dirk Hohndel | 1 | 0.53% | 1 | 6.25% |
Total | 189 | 100.00% | 16 | 100.00% |
static int tca_get_fill(struct sk_buff *skb, struct list_head *actions,
u32 portid, u32 seq, u16 flags, int event, int bind,
int ref)
{
struct tcamsg *t;
struct nlmsghdr *nlh;
unsigned char *b = skb_tail_pointer(skb);
struct nlattr *nest;
nlh = nlmsg_put(skb, portid, seq, event, sizeof(*t), flags);
if (!nlh)
goto out_nlmsg_trim;
t = nlmsg_data(nlh);
t->tca_family = AF_UNSPEC;
t->tca__pad1 = 0;
t->tca__pad2 = 0;
nest = nla_nest_start(skb, TCA_ACT_TAB);
if (nest == NULL)
goto out_nlmsg_trim;
if (tcf_action_dump(skb, actions, bind, ref) < 0)
goto out_nlmsg_trim;
nla_nest_end(skb, nest);
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
return skb->len;
out_nlmsg_trim:
nlmsg_trim(skb, b);
return -1;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 129 | 69.73% | 2 | 18.18% |
Patrick McHardy | 29 | 15.68% | 4 | 36.36% |
David S. Miller | 13 | 7.03% | 1 | 9.09% |
Arnaldo Carvalho de Melo | 9 | 4.86% | 2 | 18.18% |
Américo Wang | 3 | 1.62% | 1 | 9.09% |
Eric W. Biedermann | 2 | 1.08% | 1 | 9.09% |
Total | 185 | 100.00% | 11 | 100.00% |
static int
tcf_get_notify(struct net *net, u32 portid, struct nlmsghdr *n,
struct list_head *actions, int event)
{
struct sk_buff *skb;
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb)
return -ENOBUFS;
if (tca_get_fill(skb, actions, portid, n->nlmsg_seq, 0, event,
0, 0) <= 0) {
kfree_skb(skb);
return -EINVAL;
}
return rtnl_unicast(skb, net, portid);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 80 | 83.33% | 1 | 14.29% |
Thomas Goff | 6 | 6.25% | 1 | 14.29% |
Américo Wang | 3 | 3.12% | 1 | 14.29% |
Eric W. Biedermann | 3 | 3.12% | 1 | 14.29% |
Thomas Graf | 2 | 2.08% | 1 | 14.29% |
Denis V. Lunev | 1 | 1.04% | 1 | 14.29% |
Roman Mashak | 1 | 1.04% | 1 | 14.29% |
Total | 96 | 100.00% | 7 | 100.00% |
static struct tc_action *tcf_action_get_1(struct net *net, struct nlattr *nla,
struct nlmsghdr *n, u32 portid)
{
struct nlattr *tb[TCA_ACT_MAX + 1];
const struct tc_action_ops *ops;
struct tc_action *a;
int index;
int err;
err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL, NULL);
if (err < 0)
goto err_out;
err = -EINVAL;
if (tb[TCA_ACT_INDEX] == NULL ||
nla_len(tb[TCA_ACT_INDEX]) < sizeof(index))
goto err_out;
index = nla_get_u32(tb[TCA_ACT_INDEX]);
err = -EINVAL;
ops = tc_lookup_action(tb[TCA_ACT_KIND]);
if (!ops) /* could happen in batch of actions */
goto err_out;
err = -ENOENT;
if (ops->lookup(net, &a, index) == 0)
goto err_mod;
module_put(ops->owner);
return a;
err_mod:
module_put(ops->owner);
err_out:
return ERR_PTR(err);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Patrick McHardy | 90 | 46.88% | 8 | 53.33% |
Jamal Hadi Salim | 83 | 43.23% | 3 | 20.00% |
Américo Wang | 16 | 8.33% | 2 | 13.33% |
Johannes Berg | 2 | 1.04% | 1 | 6.67% |
Eric W. Biedermann | 1 | 0.52% | 1 | 6.67% |
Total | 192 | 100.00% | 15 | 100.00% |
static int tca_action_flush(struct net *net, struct nlattr *nla,
struct nlmsghdr *n, u32 portid)
{
struct sk_buff *skb;
unsigned char *b;
struct nlmsghdr *nlh;
struct tcamsg *t;
struct netlink_callback dcb;
struct nlattr *nest;
struct nlattr *tb[TCA_ACT_MAX + 1];
const struct tc_action_ops *ops;
struct nlattr *kind;
int err = -ENOMEM;
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb) {
pr_debug("tca_action_flush: failed skb alloc\n");
return err;
}
b = skb_tail_pointer(skb);
err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL, NULL);
if (err < 0)
goto err_out;
err = -EINVAL;
kind = tb[TCA_ACT_KIND];
ops = tc_lookup_action(kind);
if (!ops) /*some idjot trying to flush unknown action */
goto err_out;
nlh = nlmsg_put(skb, portid, n->nlmsg_seq, RTM_DELACTION,
sizeof(*t), 0);
if (!nlh)
goto out_module_put;
t = nlmsg_data(nlh);
t->tca_family = AF_UNSPEC;
t->tca__pad1 = 0;
t->tca__pad2 = 0;
nest = nla_nest_start(skb, TCA_ACT_TAB);
if (nest == NULL)
goto out_module_put;
err = ops->walk(net, skb, &dcb, RTM_DELACTION, ops);
if (err <= 0)
goto out_module_put;
nla_nest_end(skb, nest);
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
nlh->nlmsg_flags |= NLM_F_ROOT;
module_put(ops->owner);
err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
n->nlmsg_flags & NLM_F_ECHO);
if (err > 0)
return 0;
return err;
out_module_put:
module_put(ops->owner);
err_out:
kfree_skb(skb);
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 242 | 70.14% | 5 | 20.83% |
Patrick McHardy | 55 | 15.94% | 8 | 33.33% |
David S. Miller | 15 | 4.35% | 1 | 4.17% |
Américo Wang | 10 | 2.90% | 2 | 8.33% |
Arnaldo Carvalho de Melo | 8 | 2.32% | 1 | 4.17% |
Thomas Goff | 6 | 1.74% | 1 | 4.17% |
Eric W. Biedermann | 3 | 0.87% | 1 | 4.17% |
Johannes Berg | 2 | 0.58% | 1 | 4.17% |
Roman Mashak | 1 | 0.29% | 1 | 4.17% |
Thomas Graf | 1 | 0.29% | 1 | 4.17% |
Denis V. Lunev | 1 | 0.29% | 1 | 4.17% |
Stephen Hemminger | 1 | 0.29% | 1 | 4.17% |
Total | 345 | 100.00% | 24 | 100.00% |
static int
tcf_del_notify(struct net *net, struct nlmsghdr *n, struct list_head *actions,
u32 portid)
{
int ret;
struct sk_buff *skb;
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb)
return -ENOBUFS;
if (tca_get_fill(skb, actions, portid, n->nlmsg_seq, 0, RTM_DELACTION,
0, 1) <= 0) {
kfree_skb(skb);
return -EINVAL;
}
/* now do the delete */
ret = tcf_action_destroy(actions, 0);
if (ret < 0) {
kfree_skb(skb);
return ret;
}
ret = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
n->nlmsg_flags & NLM_F_ECHO);
if (ret > 0)
return 0;
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Américo Wang | 141 | 98.60% | 2 | 50.00% |
Jamal Hadi Salim | 1 | 0.70% | 1 | 25.00% |
Patrick McHardy | 1 | 0.70% | 1 | 25.00% |
Total | 143 | 100.00% | 4 | 100.00% |
static int
tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
u32 portid, int event)
{
int i, ret;
struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
struct tc_action *act;
LIST_HEAD(actions);
ret = nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL, NULL);
if (ret < 0)
return ret;
if (event == RTM_DELACTION && n->nlmsg_flags & NLM_F_ROOT) {
if (tb[1] != NULL)
return tca_action_flush(net, tb[1], n, portid);
else
return -EINVAL;
}
for (i = 1; i <= TCA_ACT_MAX_PRIO && tb[i]; i++) {
act = tcf_action_get_1(net, tb[i], n, portid);
if (IS_ERR(act)) {
ret = PTR_ERR(act);
goto err;
}
act->order = i;
list_add_tail(&act->list, &actions);
}
if (event == RTM_GETACTION)
ret = tcf_get_notify(net, portid, n, &actions, event);
else { /* delete */
ret = tcf_del_notify(net, n, &actions, portid);
if (ret)
goto err;
return ret;
}
err:
if (event != RTM_GETACTION)
tcf_action_destroy(&actions, 0);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 150 | 57.69% | 3 | 17.65% |
Patrick McHardy | 62 | 23.85% | 6 | 35.29% |
Américo Wang | 31 | 11.92% | 4 | 23.53% |
Thomas Goff | 9 | 3.46% | 1 | 5.88% |
Eric W. Biedermann | 5 | 1.92% | 1 | 5.88% |
Johannes Berg | 2 | 0.77% | 1 | 5.88% |
Roman Mashak | 1 | 0.38% | 1 | 5.88% |
Total | 260 | 100.00% | 17 | 100.00% |
static int
tcf_add_notify(struct net *net, struct nlmsghdr *n, struct list_head *actions,
u32 portid)
{
struct sk_buff *skb;
int err = 0;
skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
if (!skb)
return -ENOBUFS;
if (tca_get_fill(skb, actions, portid, n->nlmsg_seq, n->nlmsg_flags,
RTM_NEWACTION, 0, 0) <= 0) {
kfree_skb(skb);
return -EINVAL;
}
err = rtnetlink_send(skb, net, portid, RTNLGRP_TC,
n->nlmsg_flags & NLM_F_ECHO);
if (err > 0)
err = 0;
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 79 | 64.75% | 2 | 16.67% |
Américo Wang | 28 | 22.95% | 2 | 16.67% |
Thomas Goff | 6 | 4.92% | 1 | 8.33% |
Patrick McHardy | 4 | 3.28% | 4 | 33.33% |
Eric W. Biedermann | 2 | 1.64% | 1 | 8.33% |
Arnaldo Carvalho de Melo | 2 | 1.64% | 1 | 8.33% |
Denis V. Lunev | 1 | 0.82% | 1 | 8.33% |
Total | 122 | 100.00% | 12 | 100.00% |
static int tcf_action_add(struct net *net, struct nlattr *nla,
struct nlmsghdr *n, u32 portid, int ovr)
{
int ret = 0;
LIST_HEAD(actions);
ret = tcf_action_init(net, NULL, nla, NULL, NULL, ovr, 0, &actions);
if (ret)
return ret;
return tcf_add_notify(net, n, &actions, portid);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 44 | 55.70% | 1 | 9.09% |
Américo Wang | 17 | 21.52% | 3 | 27.27% |
Thomas Goff | 7 | 8.86% | 1 | 9.09% |
Patrick McHardy | 5 | 6.33% | 3 | 27.27% |
Benjamin LaHaise | 2 | 2.53% | 1 | 9.09% |
Jiri Pirko | 2 | 2.53% | 1 | 9.09% |
Eric W. Biedermann | 2 | 2.53% | 1 | 9.09% |
Total | 79 | 100.00% | 11 | 100.00% |
static u32 tcaa_root_flags_allowed = TCA_FLAG_LARGE_DUMP_ON;
static const struct nla_policy tcaa_policy[TCA_ROOT_MAX + 1] = {
[TCA_ROOT_FLAGS] = { .type = NLA_BITFIELD32,
.validation_data = &tcaa_root_flags_allowed },
[TCA_ROOT_TIME_DELTA] = { .type = NLA_U32 },
};
static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n,
struct netlink_ext_ack *extack)
{
struct net *net = sock_net(skb->sk);
struct nlattr *tca[TCA_ROOT_MAX + 1];
u32 portid = skb ? NETLINK_CB(skb).portid : 0;
int ret = 0, ovr = 0;
if ((n->nlmsg_type != RTM_GETACTION) &&
!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ROOT_MAX, NULL,
extack);
if (ret < 0)
return ret;
if (tca[TCA_ACT_TAB] == NULL) {
pr_notice("tc_ctl_action: received NO action attribs\n");
return -EINVAL;
}
/* n->nlmsg_flags & NLM_F_CREATE */
switch (n->nlmsg_type) {
case RTM_NEWACTION:
/* we are going to assume all other flags
* imply create only if it doesn't exist
* Note that CREATE | EXCL implies that
* but since we want avoid ambiguity (eg when flags
* is zero) then just set this
*/
if (n->nlmsg_flags & NLM_F_REPLACE)
ovr = 1;
replay:
ret = tcf_action_add(net, tca[TCA_ACT_TAB], n, portid, ovr);
if (ret == -EAGAIN)
goto replay;
break;
case RTM_DELACTION:
ret = tca_action_gd(net, tca[TCA_ACT_TAB], n,
portid, RTM_DELACTION);
break;
case RTM_GETACTION:
ret = tca_action_gd(net, tca[TCA_ACT_TAB], n,
portid, RTM_GETACTION);
break;
default:
BUG();
}
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 140 | 57.14% | 2 | 11.76% |
Patrick McHardy | 48 | 19.59% | 4 | 23.53% |
Eric W. Biedermann | 27 | 11.02% | 3 | 17.65% |
Denis V. Lunev | 11 | 4.49% | 1 | 5.88% |
David Ahern | 6 | 2.45% | 1 | 5.88% |
Thomas Goff | 6 | 2.45% | 1 | 5.88% |
Hideaki Yoshifuji / 吉藤英明 | 3 | 1.22% | 1 | 5.88% |
Johannes Berg | 1 | 0.41% | 1 | 5.88% |
Stephen Hemminger | 1 | 0.41% | 1 | 5.88% |
Eric Dumazet | 1 | 0.41% | 1 | 5.88% |
Lucas De Marchi | 1 | 0.41% | 1 | 5.88% |
Total | 245 | 100.00% | 17 | 100.00% |
static struct nlattr *find_dump_kind(struct nlattr **nla)
{
struct nlattr *tb1, *tb2[TCA_ACT_MAX + 1];
struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
struct nlattr *kind;
tb1 = nla[TCA_ACT_TAB];
if (tb1 == NULL)
return NULL;
if (nla_parse(tb, TCA_ACT_MAX_PRIO, nla_data(tb1),
NLMSG_ALIGN(nla_len(tb1)), NULL, NULL) < 0)
return NULL;
if (tb[1] == NULL)
return NULL;
if (nla_parse_nested(tb2, TCA_ACT_MAX, tb[1], NULL, NULL) < 0)
return NULL;
kind = tb2[TCA_ACT_KIND];
return kind;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 109 | 81.34% | 3 | 30.00% |
Patrick McHardy | 19 | 14.18% | 4 | 40.00% |
Johannes Berg | 5 | 3.73% | 2 | 20.00% |
Thomas Graf | 1 | 0.75% | 1 | 10.00% |
Total | 134 | 100.00% | 10 | 100.00% |
static int tc_dump_action(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
struct nlmsghdr *nlh;
unsigned char *b = skb_tail_pointer(skb);
struct nlattr *nest;
struct tc_action_ops *a_o;
int ret = 0;
struct tcamsg *t = (struct tcamsg *) nlmsg_data(cb->nlh);
struct nlattr *tb[TCA_ROOT_MAX + 1];
struct nlattr *count_attr = NULL;
unsigned long jiffy_since = 0;
struct nlattr *kind = NULL;
struct nla_bitfield32 bf;
u32 msecs_since = 0;
u32 act_count = 0;
ret = nlmsg_parse(cb->nlh, sizeof(struct tcamsg), tb, TCA_ROOT_MAX,
tcaa_policy, NULL);
if (ret < 0)
return ret;
kind = find_dump_kind(tb);
if (kind == NULL) {
pr_info("tc_dump_action: action bad kind\n");
return 0;
}
a_o = tc_lookup_action(kind);
if (a_o == NULL)
return 0;
cb->args[2] = 0;
if (tb[TCA_ROOT_FLAGS]) {
bf = nla_get_bitfield32(tb[TCA_ROOT_FLAGS]);
cb->args[2] = bf.value;
}
if (tb[TCA_ROOT_TIME_DELTA]) {
msecs_since = nla_get_u32(tb[TCA_ROOT_TIME_DELTA]);
}
nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
cb->nlh->nlmsg_type, sizeof(*t), 0);
if (!nlh)
goto out_module_put;
if (msecs_since)
jiffy_since = jiffies - msecs_to_jiffies(msecs_since);
t = nlmsg_data(nlh);
t->tca_family = AF_UNSPEC;
t->tca__pad1 = 0;
t->tca__pad2 = 0;
cb->args[3] = jiffy_since;
count_attr = nla_reserve(skb, TCA_ROOT_COUNT, sizeof(u32));
if (!count_attr)
goto out_module_put;
nest = nla_nest_start(skb, TCA_ACT_TAB);
if (nest == NULL)
goto out_module_put;
ret = a_o->walk(net, skb, cb, RTM_GETACTION, a_o);
if (ret < 0)
goto out_module_put;
if (ret > 0) {
nla_nest_end(skb, nest);
ret = skb->len;
act_count = cb->args[1];
memcpy(nla_data(count_attr), &act_count, sizeof(u32));
cb->args[1] = 0;
} else
nlmsg_trim(skb, b);
nlh->nlmsg_len = skb_tail_pointer(skb) - b;
if (NETLINK_CB(cb->skb).portid && ret)
nlh->nlmsg_flags |= NLM_F_MULTI;
module_put(a_o->owner);
return skb->len;
out_module_put:
module_put(a_o->owner);
nlmsg_trim(skb, b);
return skb->len;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 452 | 85.12% | 5 | 29.41% |
Patrick McHardy | 34 | 6.40% | 4 | 23.53% |
David S. Miller | 16 | 3.01% | 1 | 5.88% |
Américo Wang | 15 | 2.82% | 2 | 11.76% |
Arnaldo Carvalho de Melo | 9 | 1.69% | 2 | 11.76% |
Eric W. Biedermann | 2 | 0.38% | 1 | 5.88% |
Thomas Graf | 2 | 0.38% | 1 | 5.88% |
Stephen Hemminger | 1 | 0.19% | 1 | 5.88% |
Total | 531 | 100.00% | 17 | 100.00% |
static int __init tc_action_init(void)
{
rtnl_register(PF_UNSPEC, RTM_NEWACTION, tc_ctl_action, NULL, 0);
rtnl_register(PF_UNSPEC, RTM_DELACTION, tc_ctl_action, NULL, 0);
rtnl_register(PF_UNSPEC, RTM_GETACTION, tc_ctl_action, tc_dump_action,
0);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 23 | 45.10% | 1 | 25.00% |
Thomas Graf | 22 | 43.14% | 1 | 25.00% |
Greg Rose | 3 | 5.88% | 1 | 25.00% |
Florian Westphal | 3 | 5.88% | 1 | 25.00% |
Total | 51 | 100.00% | 4 | 100.00% |
subsys_initcall(tc_action_init);
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jamal Hadi Salim | 2874 | 45.93% | 21 | 16.67% |
Américo Wang | 861 | 13.76% | 23 | 18.25% |
David S. Miller | 682 | 10.90% | 4 | 3.17% |
Patrick McHardy | 601 | 9.61% | 21 | 16.67% |
Chris Mi | 275 | 4.40% | 1 | 0.79% |
Jiri Pirko | 245 | 3.92% | 5 | 3.97% |
Thomas Graf | 181 | 2.89% | 11 | 8.73% |
Eric Dumazet | 142 | 2.27% | 4 | 3.17% |
Wolfgang Bumiller | 114 | 1.82% | 1 | 0.79% |
Eric W. Biedermann | 47 | 0.75% | 3 | 2.38% |
Arnaldo Carvalho de Melo | 44 | 0.70% | 2 | 1.59% |
Thomas Goff | 40 | 0.64% | 1 | 0.79% |
Denis V. Lunev | 20 | 0.32% | 2 | 1.59% |
Benjamin LaHaise | 18 | 0.29% | 1 | 0.79% |
Jakub Kiciński | 18 | 0.29% | 1 | 0.79% |
Johannes Berg | 17 | 0.27% | 3 | 2.38% |
Stephen Hemminger | 17 | 0.27% | 2 | 1.59% |
Daniel Borkmann | 11 | 0.18% | 1 | 0.79% |
John Fastabend | 8 | 0.13% | 3 | 2.38% |
David Ahern | 6 | 0.10% | 1 | 0.79% |
Willem de Bruijn | 5 | 0.08% | 1 | 0.79% |
Thomas Gleixner | 4 | 0.06% | 1 | 0.79% |
Nicolas Dichtel | 4 | 0.06% | 1 | 0.79% |
Roman Mashak | 4 | 0.06% | 3 | 2.38% |
Tejun Heo | 3 | 0.05% | 1 | 0.79% |
Greg Rose | 3 | 0.05% | 1 | 0.79% |
Hideaki Yoshifuji / 吉藤英明 | 3 | 0.05% | 1 | 0.79% |
Florian Westphal | 3 | 0.05% | 1 | 0.79% |
Paul Gortmaker | 3 | 0.05% | 1 | 0.79% |
Wei Yongjun | 1 | 0.02% | 1 | 0.79% |
Dirk Hohndel | 1 | 0.02% | 1 | 0.79% |
Lucas De Marchi | 1 | 0.02% | 1 | 0.79% |
Alexei Starovoitov | 1 | 0.02% | 1 | 0.79% |
Total | 6257 | 100.00% | 126 | 100.00% |
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