From: Davide Caratti dcaratti@redhat.com
[ Upstream commit 92974a1d006ad8b30d53047c70974c9e065eb7df ]
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: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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;