bnx2: 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>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c
index c251ca3056de..2e42de239798 100644
--- a/drivers/net/ethernet/broadcom/bnx2.c
+++ b/drivers/net/ethernet/broadcom/bnx2.c
@@ -3132,6 +3132,9 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
         struct l2_fhdr *rx_hdr;
         int rx_pkt = 0, pg_ring_used = 0;
 
+        if (budget <= 0)
+                return rx_pkt;
+
         hw_cons = bnx2_get_hw_rx_cons(bnapi);
         sw_cons = rxr->rx_cons;
         sw_prod = rxr->rx_prod;