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bna: fix interrupts storm caused by erroneous packets 

The commit "e29aa33 bna: Enable Multi Buffer RX" moved packets counter
increment from the beginning of the NAPI processing loop after the check
for erroneous packets so they are never accounted. This counter is used
to inform firmware about number of processed completions (packets).
As these packets are never acked the firmware fires IRQs for them again
and again.

Fixes: e29aa33 ("bna: Enable Multi Buffer RX")
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Rasesh Mody <rasesh.mody@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ivan Vecera 2015-08-06 22:48:23 +02:00 committed by David S. Miller
parent ea70858423
commit ade4dc3e61
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/brocade/bna/bnad.c
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@ -676,6 +676,7 @@ bnad_cq_process(struct bnad *bnad, struct bna_ccb *ccb, int budget)
if (!next_cmpl->valid)
break;
}
packets++;
/* TODO: BNA_CQ_EF_LOCAL ? */
if (unlikely(flags & (BNA_CQ_EF_MAC_ERROR |
@ -692,7 +693,6 @@ bnad_cq_process(struct bnad *bnad, struct bna_ccb *ccb, int budget)
else
bnad_cq_setup_skb_frags(rcb, skb, sop_ci, nvecs, len);
packets++;
rcb->rxq->rx_packets++;
rcb->rxq->rx_bytes += totlen;
ccb->bytes_per_intr += totlen;