From: Eric Dumazet <edumazet@xxxxxxxxxx>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
[ Upstream commit 6088beef3f7517717bd21d90b379714dd0837079 ]
NAPI poll logic now enforces that a poller returns exactly the budget
when it wants to be called again.
If a driver limits TX completion, it has to return budget as well when
the limit is hit, not the number of received packets.
Reported-and-tested-by: Mike Galbraith <umgwanakikbuti@xxxxxxxxx>
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Fixes: d75b1ade567f ("net: less interrupt masking in NAPI")
Cc: Manish Chopra <manish.chopra@xxxxxxxxxx>
Acked-by: Manish Chopra <manish.chopra@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
index cbd75f97ffb3..03707c1edc2a 100644
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
@@ -2366,7 +2366,10 @@ static int netxen_nic_poll(struct napi_struct *napi, int budget)
work_done = netxen_process_rcv_ring(sds_ring, budget);
- if ((work_done < budget) && tx_complete) {
+ if (!tx_complete)
+ work_done = budget;
+
+ if (work_done < budget) {
napi_complete(&sds_ring->napi);
if (test_bit(__NX_DEV_UP, &adapter->state))
netxen_nic_enable_int(sds_ring);
--
2.2.2
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