GRO: Disable GRO on legacy netif_rx path
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>
diff --git a/net/core/dev.c b/net/core/dev.c
index 052dd47..63ec4bf 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2627,18 +2627,15 @@
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;
}