diff mbox series

[net-next,v6,02/10] net: sched: act_sample: add action cookie to sample

Message ID 20240628110559.3893562-3-amorenoz@redhat.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: openvswitch: Add sample multicasting. | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/apply fail Patch does not apply to net-next-0

Commit Message

Adrián Moreno June 28, 2024, 11:05 a.m. UTC 
If the action has a user_cookie, pass it along to the sample so it can
be easily identified.

Acked-by: Eelco Chaudron <echaudro@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
---
 net/sched/act_sample.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
diff mbox series

Patch

diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index a69b53d54039..2ceb4d141b71 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -167,7 +167,9 @@  TC_INDIRECT_SCOPE int tcf_sample_act(struct sk_buff *skb,
 {
 	struct tcf_sample *s = to_sample(a);
 	struct psample_group *psample_group;
+	u8 cookie_data[TC_COOKIE_MAX_SIZE];
 	struct psample_metadata md = {};
+	struct tc_cookie *user_cookie;
 	int retval;
 
 	tcf_lastuse_update(&s->tcf_tm);
@@ -189,6 +191,16 @@  TC_INDIRECT_SCOPE int tcf_sample_act(struct sk_buff *skb,
 		if (skb_at_tc_ingress(skb) && tcf_sample_dev_ok_push(skb->dev))
 			skb_push(skb, skb->mac_len);
 
+		rcu_read_lock();
+		user_cookie = rcu_dereference(a->user_cookie);
+		if (user_cookie) {
+			memcpy(cookie_data, user_cookie->data,
+			       user_cookie->len);
+			md.user_cookie = cookie_data;
+			md.user_cookie_len = user_cookie->len;
+		}
+		rcu_read_unlock();
+
 		md.trunc_size = s->truncate ? s->trunc_size : skb->len;
 		psample_sample_packet(psample_group, skb, s->rate, &md);