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| author | Eric Dumazet <edumazet@google.com> | 2015-01-22 07:56:18 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-26 17:49:00 -0800 |
| commit | e452612a3d5a59a8a7e5f33a579869d49b7ec90b (patch) | |
| tree | ac563c22493d58c63392684379d769972a96af7c | |
| parent | eb4890059155d5de636acba5b4421cb826d6fa4f (diff) | |
| download | lwn-e452612a3d5a59a8a7e5f33a579869d49b7ec90b.tar.gz lwn-e452612a3d5a59a8a7e5f33a579869d49b7ec90b.zip | |
netxen: fix netxen_nic_poll() logic
[ 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@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: d75b1ade567f ("net: less interrupt masking in NAPI")
Cc: Manish Chopra <manish.chopra@qlogic.com>
Acked-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c index 613037584d08..c531c8ae1be4 100644 --- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c +++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c @@ -2388,7 +2388,10 @@ 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); |