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net/sched: act_mirred: refactor the handle of xmit

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[ Upstream commit fa6d639930ee5cd3f932cc314f3407f07a06582d ]

This one is prepare for the next patch.

Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[ skulkarni: Adjusted patch for file 'sch_generic.h' wrt the mainline commit ]
Stable-dep-of: ca22da2fbd69 ("act_mirred: use the backlog for nested calls to mirred ingress")
Signed-off-by: Shubham Kulkarni <skulkarni@mvista.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
wenxu 2025-07-25 00:56:17 +05:30 • committed by Greg Kroah-Hartman
commit 02ca042304
2 changed files with 15 additions and 11 deletions
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5
include/net/sch_generic.h
View file

@ -1320,11 +1320,6 @@ void mini_qdisc_pair_swap(struct mini_Qdisc_pair *miniqp,
void mini_qdisc_pair_init(struct mini_Qdisc_pair *miniqp, struct Qdisc *qdisc,
struct mini_Qdisc __rcu **p_miniq);
static inline int skb_tc_reinsert(struct sk_buff *skb, struct tcf_result *res)
{
return res->ingress ? netif_receive_skb(skb) : dev_queue_xmit(skb);
}
/* Make sure qdisc is no longer in SCHED state. */
static inline void qdisc_synchronize(const struct Qdisc *q)
{

21
net/sched/act_mirred.c
View file

@ -206,6 +206,18 @@ release_idr:
return err;
}
static int tcf_mirred_forward(bool want_ingress, struct sk_buff *skb)
{
int err;
if (!want_ingress)
err = dev_queue_xmit(skb);
else
err = netif_receive_skb(skb);
return err;
}
static int tcf_mirred_act(struct sk_buff *skb, const struct tc_action *a,
struct tcf_result *res)
{
@ -295,18 +307,15 @@ static int tcf_mirred_act(struct sk_buff *skb, const struct tc_action *a,
/* let's the caller reinsert the packet, if possible */
if (use_reinsert) {
res->ingress = want_ingress;
if (skb_tc_reinsert(skb, res))
err = tcf_mirred_forward(res->ingress, skb);
if (err)
tcf_action_inc_overlimit_qstats(&m->common);
__this_cpu_dec(mirred_rec_level);
return TC_ACT_CONSUMED;
}
}
if (!want_ingress)
err = dev_queue_xmit(skb2);
else
err = netif_receive_skb(skb2);
err = tcf_mirred_forward(want_ingress, skb2);
if (err) {
out:
tcf_action_inc_overlimit_qstats(&m->common);