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GRO: Disable GRO on legacy netif_rx path

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When I fixed the GRO crash in the legacy receive path I used
napi_complete to replace __napi_complete.  Unfortunately they're
not the same when NETPOLL is enabled, which may result in us
not calling __napi_complete at all.

What's more, we really do need to keep the __napi_complete call
within the IRQ-off section since in theory an IRQ can occur in
between and fill up the backlog to the maximum, causing us to
lock up.

Since we can't seem to find a fix that works properly right now,
this patch reverts all the GRO support from the netif_rx path.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2009-03-26 00:59:10 -07:00 committed by David S. Miller
parent be0ea69674
commit 8f1ead2d1a
1 changed files with 3 additions and 6 deletions
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9
net/core/dev.c
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@ -2627,18 +2627,15 @@ 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();
napi_complete(napi);
goto out;
break;
}
local_irq_enable();
napi_gro_receive(napi, skb);
netif_receive_skb(skb);
} while (++work < quota && jiffies == start_time);
napi_gro_flush(napi);
out:
return work;
}