vxge: 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/neterion/vxge/vxge-main.c b/drivers/net/ethernet/neterion/vxge/vxge-main.c
index c5bb1ac..11adc899 100644
--- a/drivers/net/ethernet/neterion/vxge/vxge-main.c
+++ b/drivers/net/ethernet/neterion/vxge/vxge-main.c
@@ -368,6 +368,9 @@
vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
ring->ndev->name, __func__, __LINE__);
+ if (ring->budget <= 0)
+ goto out;
+
do {
prefetch((char *)dtr + L1_CACHE_BYTES);
rx_priv = vxge_hw_ring_rxd_private_get(dtr);
@@ -525,6 +528,7 @@
if (first_dtr)
vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
+out:
vxge_debug_entryexit(VXGE_TRACE,
"%s:%d Exiting...",
__func__, __LINE__);