From: Eric W. Biederman <ebiederm@xmission.com>
Date: Sat, 15 Mar 2014 00:57:59 +0000 (-0700)
Subject: bnx2x: Don't receive packets when the napi budget == 0
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b3529744b412e9870c9e10fef874e3bee2af1afa;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

bnx2x: 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>
---

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index 117b5c7f8ac9..acd494647f25 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -872,6 +872,8 @@ static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
 	if (unlikely(bp->panic))
 		return 0;
 #endif
+	if (budget <= 0)
+		return rx_pkt;
 
 	bd_cons = fp->rx_bd_cons;
 	bd_prod = fp->rx_bd_prod;