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net/sched: act_ct: Offload connections with commit action 

Currently established connections are not offloaded if the filter has a
"ct commit" action. This behavior will not offload connections of the
following scenario:

$ tc_filter add dev $DEV ingress protocol ip prio 1 flower \
  ct_state -trk \
  action ct commit action goto chain 1

$ tc_filter add dev $DEV ingress protocol ip chain 1 prio 1 flower \
  action mirred egress redirect dev $DEV2

$ tc_filter add dev $DEV2 ingress protocol ip prio 1 flower \
  action ct commit action goto chain 1

$ tc_filter add dev $DEV2 ingress protocol ip prio 1 chain 1 flower \
  ct_state +trk+est \
  action mirred egress redirect dev $DEV

Offload established connections, regardless of the commit flag.

Fixes: 46475bb20f ("net/sched: act_ct: Software offload of established flows")
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Paul Blakey <paulb@nvidia.com>
Link: https://lore.kernel.org/r/1622029449-27060-1-git-send-email-paulb@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Paul Blakey 2021-05-26 14:44:09 +03:00 committed by Jakub Kicinski
parent b28d8f0c25
commit 0cc254e5aa
1 changed files with 4 additions and 3 deletions
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7
net/sched/act_ct.c
View File

@ -984,7 +984,7 @@ static int tcf_ct_act(struct sk_buff *skb, const struct tc_action *a,
*/
cached = tcf_ct_skb_nfct_cached(net, skb, p->zone, force);
if (!cached) {
if (!commit && tcf_ct_flow_table_lookup(p, skb, family)) {
if (tcf_ct_flow_table_lookup(p, skb, family)) {
skip_add = true;
goto do_nat;
}
@ -1022,10 +1022,11 @@ do_nat:
* even if the connection is already confirmed.
*/
nf_conntrack_confirm(skb);
} else if (!skip_add) {
tcf_ct_flow_table_process_conn(p->ct_ft, ct, ctinfo);
}
if (!skip_add)
tcf_ct_flow_table_process_conn(p->ct_ft, ct, ctinfo);
out_push:
skb_push_rcsum(skb, nh_ofs);