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..11adc89 100644 (file)
--- a/drivers/net/ethernet/neterion/vxge/vxge-main.c
+++ b/drivers/net/ethernet/neterion/vxge/vxge-main.c
@@ -368,6 +368,9 @@ vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
        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 @@ vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
        if (first_dtr)
                vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);
 
+out:
        vxge_debug_entryexit(VXGE_TRACE,
                                "%s:%d  Exiting...",
                                __func__, __LINE__);