From: Davide Caratti <dcaratti@redhat.com>
Date: Tue, 17 Sep 2019 11:30:55 +0200
Subject: net/sched: act_sample: don't push mac header on ip6gre ingress
Git-commit: 92974a1d006ad8b30d53047c70974c9e065eb7df
Patch-mainline: 5.4-rc1
References: networking-stable-19_09_30
current 'sample' action doesn't push the mac header of ingress packets if
they are received by a layer 3 tunnel (like gre or sit); but it forgot to
check for gre over ipv6, so the following script:
# tc q a dev $d clsact
# tc f a dev $d ingress protocol ip flower ip_proto icmp action sample \
> group 100 rate 1
# psample -v -g 100
dumps everything, including outer header and mac, when $d is a gre tunnel
over ipv6. Fix this adding a missing label for ARPHRD_IP6GRE devices.
Fixes: 5c5670fae430 ("net/sched: Introduce sample tc action")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Yotam Gigi <yotam.gi@gmail.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
net/sched/act_sample.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -134,6 +134,7 @@ static bool tcf_sample_dev_ok_push(struc
case ARPHRD_TUNNEL6:
case ARPHRD_SIT:
case ARPHRD_IPGRE:
+ case ARPHRD_IP6GRE:
case ARPHRD_VOID:
case ARPHRD_NONE:
return false;