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ibmveth: Don't receive packets when the napi budget == 0 

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman 2014-03-14 18:03:50 -07:00 committed by David S. Miller
parent 9b2c05713e
commit cb013ea12c
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/ibm/ibmveth.c
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@ -1072,7 +1072,7 @@ static int ibmveth_poll(struct napi_struct *napi, int budget)
unsigned long lpar_rc; unsigned long lpar_rc;
restart_poll: restart_poll:
do { while (frames_processed < budget) {
if (!ibmveth_rxq_pending_buffer(adapter)) if (!ibmveth_rxq_pending_buffer(adapter))
break; break;
@ -1121,7 +1121,7 @@ restart_poll:
netdev->stats.rx_bytes += length; netdev->stats.rx_bytes += length;
frames_processed++; frames_processed++;
} }
} while (frames_processed < budget); }
ibmveth_replenish_task(adapter); ibmveth_replenish_task(adapter);