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authorAlexander Duyck <aduyck@mirantis.com>2016-03-09 20:24:23 +0300
committerDavid S. Miller <davem@davemloft.net>2016-03-13 22:01:00 +0300
commitc194cf93c164ed1c71142485ee0f70f9f2d1fe35 (patch)
tree5585666fad60762cc28cffe1013f76c05877fc40 /drivers/net/geneve.c
parent3a8befcd7872f572882ad7e14994a17f9b55dd4e (diff)
downloadlinux-c194cf93c164ed1c71142485ee0f70f9f2d1fe35.tar.xz
gro: Defer clearing of flush bit in tunnel paths
This patch updates the GRO handlers for GRE, VXLAN, GENEVE, and FOU so that we do not clear the flush bit until after we have called the next level GRO handler. Previously this was being cleared before parsing through the list of frames, however this resulted in several paths where either the bit needed to be reset but wasn't as in the case of FOU, or cases where it was being set as in GENEVE. By just deferring the clearing of the bit until after the next level protocol has been parsed we can avoid any unnecessary bit twiddling and avoid bugs. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/geneve.c')
-rw-r--r--drivers/net/geneve.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index 33185b9a435e..192631a345df 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -463,8 +463,6 @@ static struct sk_buff **geneve_gro_receive(struct sk_buff **head,
goto out;
}
- flush = 0;
-
for (p = *head; p; p = p->next) {
if (!NAPI_GRO_CB(p)->same_flow)
continue;
@@ -481,14 +479,13 @@ static struct sk_buff **geneve_gro_receive(struct sk_buff **head,
rcu_read_lock();
ptype = gro_find_receive_by_type(type);
- if (!ptype) {
- flush = 1;
+ if (!ptype)
goto out_unlock;
- }
skb_gro_pull(skb, gh_len);
skb_gro_postpull_rcsum(skb, gh, gh_len);
pp = ptype->callbacks.gro_receive(head, skb);
+ flush = 0;
out_unlock:
rcu_read_unlock();