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xen-netfront: convert to GRO API 

Anirban was seeing netfront received MTU size packets, which downgraded
throughput. The following patch makes netfront use GRO API which
improves throughput for that case.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Cc: Anirban Chakraborty <abchak@juniper.net>
Cc: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Konrad Wilk <konrad.wilk@oracle.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wei Liu 2013-09-30 13:46:34 +01:00 committed by David S. Miller
parent ee002b64ec
commit 99d3d587b2
1 changed files with 3 additions and 1 deletions
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4
drivers/net/xen-netfront.c
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@ -952,7 +952,7 @@ static int handle_incoming_queue(struct net_device *dev,
u64_stats_update_end(&stats->syncp);
/* Pass it up. */
netif_receive_skb(skb);
napi_gro_receive(&np->napi, skb);
}
return packets_dropped;
@ -1051,6 +1051,8 @@ static int xennet_poll(struct napi_struct *napi, int budget)
if (work_done < budget) {
int more_to_do = 0;
napi_gro_flush(napi, false);
local_irq_save(flags);
RING_FINAL_CHECK_FOR_RESPONSES(&np->rx, more_to_do);