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| author | Eric W. Biederman <ebiederm@xmission.com> | 2014-03-14 18:08:21 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-14 22:52:48 -0400 |
| commit | d110ec4533261e7f9d89bfeeae80cc50fd9e7468 (patch) | |
| tree | e58fb56f740773da45bb2ee41999e1aea29dc6f8 /drivers/net/ethernet/tile | |
| parent | 99a09c26a8f353bc35087ffa8cc47ffdd6d5d5bc (diff) | |
| download | linux-d110ec4533261e7f9d89bfeeae80cc50fd9e7468.tar.gz linux-d110ec4533261e7f9d89bfeeae80cc50fd9e7468.tar.bz2 linux-d110ec4533261e7f9d89bfeeae80cc50fd9e7468.zip | |
tilegx: 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>
Diffstat (limited to 'drivers/net/ethernet/tile')
| -rw-r--r-- | drivers/net/ethernet/tile/tilegx.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/tile/tilegx.c b/drivers/net/ethernet/tile/tilegx.c index 17503da9f7a5..b43f1b3b9632 100644 --- a/drivers/net/ethernet/tile/tilegx.c +++ b/drivers/net/ethernet/tile/tilegx.c @@ -659,6 +659,9 @@ static int tile_net_poll(struct napi_struct *napi, int budget) struct info_mpipe *info_mpipe = container_of(napi, struct info_mpipe, napi); + if (budget <= 0) + goto done; + instance = info_mpipe->instance; while ((n = gxio_mpipe_iqueue_try_peek( &info_mpipe->iqueue, |