Release 4.11 net/sched/cls_bpf.c
/*
* Berkeley Packet Filter based traffic classifier
*
* Might be used to classify traffic through flexible, user-defined and
* possibly JIT-ed BPF filters for traffic control as an alternative to
* ematches.
*
* (C) 2013 Daniel Borkmann <dborkman@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/skbuff.h>
#include <linux/filter.h>
#include <linux/bpf.h>
#include <net/rtnetlink.h>
#include <net/pkt_cls.h>
#include <net/sock.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Daniel Borkmann <dborkman@redhat.com>");
MODULE_DESCRIPTION("TC BPF based classifier");
#define CLS_BPF_NAME_LEN 256
#define CLS_BPF_SUPPORTED_GEN_FLAGS \
(TCA_CLS_FLAGS_SKIP_HW | TCA_CLS_FLAGS_SKIP_SW)
struct cls_bpf_head {
struct list_head plist;
u32 hgen;
struct rcu_head rcu;
};
struct cls_bpf_prog {
struct bpf_prog *filter;
struct list_head link;
struct tcf_result res;
bool exts_integrated;
bool offloaded;
u32 gen_flags;
struct tcf_exts exts;
u32 handle;
u16 bpf_num_ops;
struct sock_filter *bpf_ops;
const char *bpf_name;
struct tcf_proto *tp;
struct rcu_head rcu;
};
static const struct nla_policy bpf_policy[TCA_BPF_MAX + 1] = {
[TCA_BPF_CLASSID] = { .type = NLA_U32 },
[TCA_BPF_FLAGS] = { .type = NLA_U32 },
[TCA_BPF_FLAGS_GEN] = { .type = NLA_U32 },
[TCA_BPF_FD] = { .type = NLA_U32 },
[TCA_BPF_NAME] = { .type = NLA_NUL_STRING,
.len = CLS_BPF_NAME_LEN },
[TCA_BPF_OPS_LEN] = { .type = NLA_U16 },
[TCA_BPF_OPS] = { .type = NLA_BINARY,
.len = sizeof(struct sock_filter) * BPF_MAXINSNS },
};
static int cls_bpf_exec_opcode(int code)
{
switch (code) {
case TC_ACT_OK:
case TC_ACT_SHOT:
case TC_ACT_STOLEN:
case TC_ACT_REDIRECT:
case TC_ACT_UNSPEC:
return code;
default:
return TC_ACT_UNSPEC;
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 34 | 91.89% | 1 | 50.00% |
Alexei Starovoitov | 3 | 8.11% | 1 | 50.00% |
Total | 37 | 100.00% | 2 | 100.00% |
static int cls_bpf_classify(struct sk_buff *skb, const struct tcf_proto *tp,
struct tcf_result *res)
{
struct cls_bpf_head *head = rcu_dereference_bh(tp->root);
bool at_ingress = skb_at_tc_ingress(skb);
struct cls_bpf_prog *prog;
int ret = -1;
/* Needed here for accessing maps. */
rcu_read_lock();
list_for_each_entry_rcu(prog, &head->plist, link) {
int filter_res;
qdisc_skb_cb(skb)->tc_classid = prog->res.classid;
if (tc_skip_sw(prog->gen_flags)) {
filter_res = prog->exts_integrated ? TC_ACT_UNSPEC : 0;
} else if (at_ingress) {
/* It is safe to push/pull even if skb_shared() */
__skb_push(skb, skb->mac_len);
bpf_compute_data_end(skb);
filter_res = BPF_PROG_RUN(prog->filter, skb);
__skb_pull(skb, skb->mac_len);
} else {
bpf_compute_data_end(skb);
filter_res = BPF_PROG_RUN(prog->filter, skb);
}
if (prog->exts_integrated) {
res->class = 0;
res->classid = TC_H_MAJ(prog->res.classid) |
qdisc_skb_cb(skb)->tc_classid;
ret = cls_bpf_exec_opcode(filter_res);
if (ret == TC_ACT_UNSPEC)
continue;
break;
}
if (filter_res == 0)
continue;
if (filter_res != -1) {
res->class = 0;
res->classid = filter_res;
} else {
*res = prog->res;
}
ret = tcf_exts_exec(skb, &prog->exts, res);
if (ret < 0)
continue;
break;
}
rcu_read_unlock();
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 192 | 68.57% | 5 | 45.45% |
Alexei Starovoitov | 62 | 22.14% | 3 | 27.27% |
Jakub Kiciński | 22 | 7.86% | 1 | 9.09% |
John Fastabend | 3 | 1.07% | 1 | 9.09% |
Américo Wang | 1 | 0.36% | 1 | 9.09% |
Total | 280 | 100.00% | 11 | 100.00% |
static bool cls_bpf_is_ebpf(const struct cls_bpf_prog *prog)
{
return !prog->bpf_ops;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 18 | 100.00% | 1 | 100.00% |
Total | 18 | 100.00% | 1 | 100.00% |
static int cls_bpf_offload_cmd(struct tcf_proto *tp, struct cls_bpf_prog *prog,
enum tc_clsbpf_command cmd)
{
struct net_device *dev = tp->q->dev_queue->dev;
struct tc_cls_bpf_offload bpf_offload = {};
struct tc_to_netdev offload;
int err;
offload.type = TC_SETUP_CLSBPF;
offload.cls_bpf = &bpf_offload;
bpf_offload.command = cmd;
bpf_offload.exts = &prog->exts;
bpf_offload.prog = prog->filter;
bpf_offload.name = prog->bpf_name;
bpf_offload.exts_integrated = prog->exts_integrated;
bpf_offload.gen_flags = prog->gen_flags;
err = dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle,
tp->protocol, &offload);
if (!err && (cmd == TC_CLSBPF_ADD || cmd == TC_CLSBPF_REPLACE))
prog->gen_flags |= TCA_CLS_FLAGS_IN_HW;
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jakub Kiciński | 125 | 81.17% | 2 | 66.67% |
Or Gerlitz | 29 | 18.83% | 1 | 33.33% |
Total | 154 | 100.00% | 3 | 100.00% |
static int cls_bpf_offload(struct tcf_proto *tp, struct cls_bpf_prog *prog,
struct cls_bpf_prog *oldprog)
{
struct net_device *dev = tp->q->dev_queue->dev;
struct cls_bpf_prog *obj = prog;
enum tc_clsbpf_command cmd;
bool skip_sw;
int ret;
skip_sw = tc_skip_sw(prog->gen_flags) ||
(oldprog && tc_skip_sw(oldprog->gen_flags));
if (oldprog && oldprog->offloaded) {
if (tc_should_offload(dev, tp, prog->gen_flags)) {
cmd = TC_CLSBPF_REPLACE;
} else if (!tc_skip_sw(prog->gen_flags)) {
obj = oldprog;
cmd = TC_CLSBPF_DESTROY;
} else {
return -EINVAL;
}
} else {
if (!tc_should_offload(dev, tp, prog->gen_flags))
return skip_sw ? -EINVAL : 0;
cmd = TC_CLSBPF_ADD;
}
ret = cls_bpf_offload_cmd(tp, obj, cmd);
if (ret)
return skip_sw ? ret : 0;
obj->offloaded = true;
if (oldprog)
oldprog->offloaded = false;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jakub Kiciński | 198 | 100.00% | 3 | 100.00% |
Total | 198 | 100.00% | 3 | 100.00% |
static void cls_bpf_stop_offload(struct tcf_proto *tp,
struct cls_bpf_prog *prog)
{
int err;
if (!prog->offloaded)
return;
err = cls_bpf_offload_cmd(tp, prog, TC_CLSBPF_DESTROY);
if (err) {
pr_err("Stopping hardware offload failed: %d\n", err);
return;
}
prog->offloaded = false;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jakub Kiciński | 58 | 100.00% | 1 | 100.00% |
Total | 58 | 100.00% | 1 | 100.00% |
static void cls_bpf_offload_update_stats(struct tcf_proto *tp,
struct cls_bpf_prog *prog)
{
if (!prog->offloaded)
return;
cls_bpf_offload_cmd(tp, prog, TC_CLSBPF_STATS);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jakub Kiciński | 33 | 100.00% | 1 | 100.00% |
Total | 33 | 100.00% | 1 | 100.00% |
static int cls_bpf_init(struct tcf_proto *tp)
{
struct cls_bpf_head *head;
head = kzalloc(sizeof(*head), GFP_KERNEL);
if (head == NULL)
return -ENOBUFS;
INIT_LIST_HEAD_RCU(&head->plist);
rcu_assign_pointer(tp->root, head);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 54 | 91.53% | 1 | 50.00% |
John Fastabend | 5 | 8.47% | 1 | 50.00% |
Total | 59 | 100.00% | 2 | 100.00% |
static void __cls_bpf_delete_prog(struct cls_bpf_prog *prog)
{
tcf_exts_destroy(&prog->exts);
if (cls_bpf_is_ebpf(prog))
bpf_prog_put(prog->filter);
else
bpf_prog_destroy(prog->filter);
kfree(prog->bpf_name);
kfree(prog->bpf_ops);
kfree(prog);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 59 | 98.33% | 3 | 75.00% |
Alexei Starovoitov | 1 | 1.67% | 1 | 25.00% |
Total | 60 | 100.00% | 4 | 100.00% |
static void cls_bpf_delete_prog_rcu(struct rcu_head *rcu)
{
__cls_bpf_delete_prog(container_of(rcu, struct cls_bpf_prog, rcu));
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
John Fastabend | 21 | 87.50% | 1 | 50.00% |
Daniel Borkmann | 3 | 12.50% | 1 | 50.00% |
Total | 24 | 100.00% | 2 | 100.00% |
static void __cls_bpf_delete(struct tcf_proto *tp, struct cls_bpf_prog *prog)
{
cls_bpf_stop_offload(tp, prog);
list_del_rcu(&prog->link);
tcf_unbind_filter(tp, &prog->res);
call_rcu(&prog->rcu, cls_bpf_delete_prog_rcu);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 28 | 54.90% | 2 | 40.00% |
John Fastabend | 16 | 31.37% | 2 | 40.00% |
Jakub Kiciński | 7 | 13.73% | 1 | 20.00% |
Total | 51 | 100.00% | 5 | 100.00% |
static int cls_bpf_delete(struct tcf_proto *tp, unsigned long arg)
{
__cls_bpf_delete(tp, (struct cls_bpf_prog *) arg);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 30 | 100.00% | 2 | 100.00% |
Total | 30 | 100.00% | 2 | 100.00% |
static bool cls_bpf_destroy(struct tcf_proto *tp, bool force)
{
struct cls_bpf_head *head = rtnl_dereference(tp->root);
struct cls_bpf_prog *prog, *tmp;
if (!force && !list_empty(&head->plist))
return false;
list_for_each_entry_safe(prog, tmp, &head->plist, link)
__cls_bpf_delete(tp, prog);
kfree_rcu(head, rcu);
return true;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 42 | 53.85% | 2 | 40.00% |
Cong Wang | 24 | 30.77% | 1 | 20.00% |
John Fastabend | 6 | 7.69% | 1 | 20.00% |
Jakub Kiciński | 6 | 7.69% | 1 | 20.00% |
Total | 78 | 100.00% | 5 | 100.00% |
static unsigned long cls_bpf_get(struct tcf_proto *tp, u32 handle)
{
struct cls_bpf_head *head = rtnl_dereference(tp->root);
struct cls_bpf_prog *prog;
unsigned long ret = 0UL;
list_for_each_entry(prog, &head->plist, link) {
if (prog->handle == handle) {
ret = (unsigned long) prog;
break;
}
}
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 66 | 94.29% | 1 | 33.33% |
John Fastabend | 3 | 4.29% | 1 | 33.33% |
Jiri Pirko | 1 | 1.43% | 1 | 33.33% |
Total | 70 | 100.00% | 3 | 100.00% |
static int cls_bpf_prog_from_ops(struct nlattr **tb, struct cls_bpf_prog *prog)
{
struct sock_filter *bpf_ops;
struct sock_fprog_kern fprog_tmp;
struct bpf_prog *fp;
u16 bpf_size, bpf_num_ops;
int ret;
bpf_num_ops = nla_get_u16(tb[TCA_BPF_OPS_LEN]);
if (bpf_num_ops > BPF_MAXINSNS || bpf_num_ops == 0)
return -EINVAL;
bpf_size = bpf_num_ops * sizeof(*bpf_ops);
if (bpf_size != nla_len(tb[TCA_BPF_OPS]))
return -EINVAL;
bpf_ops = kzalloc(bpf_size, GFP_KERNEL);
if (bpf_ops == NULL)
return -ENOMEM;
memcpy(bpf_ops, nla_data(tb[TCA_BPF_OPS]), bpf_size);
fprog_tmp.len = bpf_num_ops;
fprog_tmp.filter = bpf_ops;
ret = bpf_prog_create(&fp, &fprog_tmp);
if (ret < 0) {
kfree(bpf_ops);
return ret;
}
prog->bpf_ops = bpf_ops;
prog->bpf_num_ops = bpf_num_ops;
prog->bpf_name = NULL;
prog->filter = fp;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 181 | 95.77% | 4 | 66.67% |
Jiri Pirko | 6 | 3.17% | 1 | 16.67% |
Alexei Starovoitov | 2 | 1.06% | 1 | 16.67% |
Total | 189 | 100.00% | 6 | 100.00% |
static int cls_bpf_prog_from_efd(struct nlattr **tb, struct cls_bpf_prog *prog,
const struct tcf_proto *tp)
{
struct bpf_prog *fp;
char *name = NULL;
u32 bpf_fd;
bpf_fd = nla_get_u32(tb[TCA_BPF_FD]);
fp = bpf_prog_get_type(bpf_fd, BPF_PROG_TYPE_SCHED_CLS);
if (IS_ERR(fp))
return PTR_ERR(fp);
if (tb[TCA_BPF_NAME]) {
name = nla_memdup(tb[TCA_BPF_NAME], GFP_KERNEL);
if (!name) {
bpf_prog_put(fp);
return -ENOMEM;
}
}
prog->bpf_ops = NULL;
prog->bpf_name = name;
prog->filter = fp;
if (fp->dst_needed && !(tp->q->flags & TCQ_F_INGRESS))
netif_keep_dst(qdisc_dev(tp->q));
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 153 | 99.35% | 5 | 83.33% |
Thomas Graf | 1 | 0.65% | 1 | 16.67% |
Total | 154 | 100.00% | 6 | 100.00% |
static int cls_bpf_modify_existing(struct net *net, struct tcf_proto *tp,
struct cls_bpf_prog *prog,
unsigned long base, struct nlattr **tb,
struct nlattr *est, bool ovr)
{
bool is_bpf, is_ebpf, have_exts = false;
struct tcf_exts exts;
u32 gen_flags = 0;
int ret;
is_bpf = tb[TCA_BPF_OPS_LEN] && tb[TCA_BPF_OPS];
is_ebpf = tb[TCA_BPF_FD];
if ((!is_bpf && !is_ebpf) || (is_bpf && is_ebpf))
return -EINVAL;
ret = tcf_exts_init(&exts, TCA_BPF_ACT, TCA_BPF_POLICE);
if (ret < 0)
return ret;
ret = tcf_exts_validate(net, tp, tb, est, &exts, ovr);
if (ret < 0)
goto errout;
if (tb[TCA_BPF_FLAGS]) {
u32 bpf_flags = nla_get_u32(tb[TCA_BPF_FLAGS]);
if (bpf_flags & ~TCA_BPF_FLAG_ACT_DIRECT) {
ret = -EINVAL;
goto errout;
}
have_exts = bpf_flags & TCA_BPF_FLAG_ACT_DIRECT;
}
if (tb[TCA_BPF_FLAGS_GEN]) {
gen_flags = nla_get_u32(tb[TCA_BPF_FLAGS_GEN]);
if (gen_flags & ~CLS_BPF_SUPPORTED_GEN_FLAGS ||
!tc_flags_valid(gen_flags)) {
ret = -EINVAL;
goto errout;
}
}
prog->exts_integrated = have_exts;
prog->gen_flags = gen_flags;
ret = is_bpf ? cls_bpf_prog_from_ops(tb, prog) :
cls_bpf_prog_from_efd(tb, prog, tp);
if (ret < 0)
goto errout;
if (tb[TCA_BPF_CLASSID]) {
prog->res.classid = nla_get_u32(tb[TCA_BPF_CLASSID]);
tcf_bind_filter(tp, &prog->res, base);
}
tcf_exts_change(tp, &prog->exts, &exts);
return 0;
errout:
tcf_exts_destroy(&exts);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 248 | 74.03% | 5 | 71.43% |
Jakub Kiciński | 53 | 15.82% | 1 | 14.29% |
Américo Wang | 34 | 10.15% | 1 | 14.29% |
Total | 335 | 100.00% | 7 | 100.00% |
static u32 cls_bpf_grab_new_handle(struct tcf_proto *tp,
struct cls_bpf_head *head)
{
unsigned int i = 0x80000000;
u32 handle;
do {
if (++head->hgen == 0x7FFFFFFF)
head->hgen = 1;
} while (--i > 0 && cls_bpf_get(tp, head->hgen));
if (unlikely(i == 0)) {
pr_err("Insufficient number of handles\n");
handle = 0;
} else {
handle = head->hgen;
}
return handle;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 92 | 100.00% | 2 | 100.00% |
Total | 92 | 100.00% | 2 | 100.00% |
static int cls_bpf_change(struct net *net, struct sk_buff *in_skb,
struct tcf_proto *tp, unsigned long base,
u32 handle, struct nlattr **tca,
unsigned long *arg, bool ovr)
{
struct cls_bpf_head *head = rtnl_dereference(tp->root);
struct cls_bpf_prog *oldprog = (struct cls_bpf_prog *) *arg;
struct nlattr *tb[TCA_BPF_MAX + 1];
struct cls_bpf_prog *prog;
int ret;
if (tca[TCA_OPTIONS] == NULL)
return -EINVAL;
ret = nla_parse_nested(tb, TCA_BPF_MAX, tca[TCA_OPTIONS], bpf_policy);
if (ret < 0)
return ret;
prog = kzalloc(sizeof(*prog), GFP_KERNEL);
if (!prog)
return -ENOBUFS;
ret = tcf_exts_init(&prog->exts, TCA_BPF_ACT, TCA_BPF_POLICE);
if (ret < 0)
goto errout;
if (oldprog) {
if (handle && oldprog->handle != handle) {
ret = -EINVAL;
goto errout;
}
}
if (handle == 0)
prog->handle = cls_bpf_grab_new_handle(tp, head);
else
prog->handle = handle;
if (prog->handle == 0) {
ret = -EINVAL;
goto errout;
}
ret = cls_bpf_modify_existing(net, tp, prog, base, tb, tca[TCA_RATE],
ovr);
if (ret < 0)
goto errout;
ret = cls_bpf_offload(tp, prog, oldprog);
if (ret) {
__cls_bpf_delete_prog(prog);
return ret;
}
if (!tc_in_hw(prog->gen_flags))
prog->gen_flags |= TCA_CLS_FLAGS_NOT_IN_HW;
if (oldprog) {
list_replace_rcu(&oldprog->link, &prog->link);
tcf_unbind_filter(tp, &oldprog->res);
call_rcu(&oldprog->rcu, cls_bpf_delete_prog_rcu);
} else {
list_add_rcu(&prog->link, &head->plist);
}
*arg = (unsigned long) prog;
return 0;
errout:
tcf_exts_destroy(&prog->exts);
kfree(prog);
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 244 | 62.09% | 3 | 25.00% |
John Fastabend | 73 | 18.58% | 2 | 16.67% |
Américo Wang | 31 | 7.89% | 3 | 25.00% |
Jakub Kiciński | 24 | 6.11% | 2 | 16.67% |
Or Gerlitz | 16 | 4.07% | 1 | 8.33% |
Cong Wang | 5 | 1.27% | 1 | 8.33% |
Total | 393 | 100.00% | 12 | 100.00% |
static int cls_bpf_dump_bpf_info(const struct cls_bpf_prog *prog,
struct sk_buff *skb)
{
struct nlattr *nla;
if (nla_put_u16(skb, TCA_BPF_OPS_LEN, prog->bpf_num_ops))
return -EMSGSIZE;
nla = nla_reserve(skb, TCA_BPF_OPS, prog->bpf_num_ops *
sizeof(struct sock_filter));
if (nla == NULL)
return -EMSGSIZE;
memcpy(nla_data(nla), prog->bpf_ops, nla_len(nla));
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 88 | 100.00% | 1 | 100.00% |
Total | 88 | 100.00% | 1 | 100.00% |
static int cls_bpf_dump_ebpf_info(const struct cls_bpf_prog *prog,
struct sk_buff *skb)
{
struct nlattr *nla;
if (prog->bpf_name &&
nla_put_string(skb, TCA_BPF_NAME, prog->bpf_name))
return -EMSGSIZE;
nla = nla_reserve(skb, TCA_BPF_TAG, sizeof(prog->filter->tag));
if (nla == NULL)
return -EMSGSIZE;
memcpy(nla_data(nla), prog->filter->tag, nla_len(nla));
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 93 | 100.00% | 3 | 100.00% |
Total | 93 | 100.00% | 3 | 100.00% |
static int cls_bpf_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
struct sk_buff *skb, struct tcmsg *tm)
{
struct cls_bpf_prog *prog = (struct cls_bpf_prog *) fh;
struct nlattr *nest;
u32 bpf_flags = 0;
int ret;
if (prog == NULL)
return skb->len;
tm->tcm_handle = prog->handle;
cls_bpf_offload_update_stats(tp, prog);
nest = nla_nest_start(skb, TCA_OPTIONS);
if (nest == NULL)
goto nla_put_failure;
if (prog->res.classid &&
nla_put_u32(skb, TCA_BPF_CLASSID, prog->res.classid))
goto nla_put_failure;
if (cls_bpf_is_ebpf(prog))
ret = cls_bpf_dump_ebpf_info(prog, skb);
else
ret = cls_bpf_dump_bpf_info(prog, skb);
if (ret)
goto nla_put_failure;
if (tcf_exts_dump(skb, &prog->exts) < 0)
goto nla_put_failure;
if (prog->exts_integrated)
bpf_flags |= TCA_BPF_FLAG_ACT_DIRECT;
if (bpf_flags && nla_put_u32(skb, TCA_BPF_FLAGS, bpf_flags))
goto nla_put_failure;
if (prog->gen_flags &&
nla_put_u32(skb, TCA_BPF_FLAGS_GEN, prog->gen_flags))
goto nla_put_failure;
nla_nest_end(skb, nest);
if (tcf_exts_dump_stats(skb, &prog->exts) < 0)
goto nla_put_failure;
return skb->len;
nla_put_failure:
nla_nest_cancel(skb, nest);
return -1;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Borkmann | 229 | 87.74% | 4 | 57.14% |
Jakub Kiciński | 27 | 10.34% | 2 | 28.57% |
Américo Wang | 5 | 1.92% | 1 | 14.29% |
Total | 261 | 100.00% | 7 | 100.00% |
static