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authorHerbert Xu <herbert@gondor.apana.org.au>2009-03-17 13:11:29 -0700
committerDavid S. Miller <davem@davemloft.net>2009-03-17 13:11:29 -0700
commit303c6a0251852ecbdc5c15e466dcaff5971f7517 (patch)
treec75ff5ae3238d54e1dea0813bf3177a11faf0dd0
parentea8dbdd17099a9a5864ebd4c87e01e657b19c7ab (diff)
downloadop-kernel-dev-303c6a0251852ecbdc5c15e466dcaff5971f7517.zip
op-kernel-dev-303c6a0251852ecbdc5c15e466dcaff5971f7517.tar.gz
gro: Fix legacy path napi_complete crash
On the legacy netif_rx path, I incorrectly tried to optimise the napi_complete call by using __napi_complete before we reenable IRQs. This simply doesn't work since we need to flush the held GRO packets first. This patch fixes it by doing the obvious thing of reenabling IRQs first and then calling napi_complete. Reported-by: Frank Blaschka <blaschka@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/dev.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index f112970..2565f6d 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2588,9 +2588,9 @@ static int process_backlog(struct napi_struct *napi, int quota)
local_irq_disable();
skb = __skb_dequeue(&queue->input_pkt_queue);
if (!skb) {
- __napi_complete(napi);
local_irq_enable();
- break;
+ napi_complete(napi);
+ goto out;
}
local_irq_enable();
@@ -2599,6 +2599,7 @@ static int process_backlog(struct napi_struct *napi, int quota)
napi_gro_flush(napi);
+out:
return work;
}
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