From 1100248a5c5ccd57059eb8d02ec077e839a23826 Mon Sep 17 00:00:00 2001 From: Mike Pattrick Date: Wed, 17 Aug 2022 11:06:34 -0400 Subject: openvswitch: Fix double reporting of drops in dropwatch Frames sent to userspace can be reported as dropped in ovs_dp_process_packet, however, if they are dropped in the netlink code then netlink_attachskb will report the same frame as dropped. This patch checks for error codes which indicate that the frame has already been freed. Signed-off-by: Mike Pattrick Link: https://bugzilla.redhat.com/show_bug.cgi?id=2109946 Signed-off-by: David S. Miller --- net/openvswitch/datapath.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index 7e8a39a35627..ca22aa73c6e0 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -252,10 +252,17 @@ void ovs_dp_process_packet(struct sk_buff *skb, struct sw_flow_key *key) upcall.mru = OVS_CB(skb)->mru; error = ovs_dp_upcall(dp, skb, key, &upcall, 0); - if (unlikely(error)) - kfree_skb(skb); - else + switch (error) { + case 0: + case -EAGAIN: + case -ERESTARTSYS: + case -EINTR: consume_skb(skb); + break; + default: + kfree_skb(skb); + break; + } stats_counter = &stats->n_missed; goto out; } -- cgit v1.2.3