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Date: Fri, 14 Mar 2014 18:08:21 -0700
From: ebiederm@...ssion.com (Eric W. Biederman)
To: David Miller <davem@...emloft.net>
Cc: eric.dumazet@...il.com, netdev@...r.kernel.org,
xiyou.wangcong@...il.com, mpm@...enic.com, satyam.sharma@...il.com
Subject: [PATCH net-next 12/16] 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@...ssion.com>
---
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,
--
1.7.5.4
--
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