diff options
| author | Eric W. Biederman <ebiederm@xmission.com> | 2014-03-15 02:10:50 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-15 03:52:48 +0100 |
| commit | c7b82cc8d95e69afe2dc1038fb73abc048a3bca5 (patch) | |
| tree | 841f71d7ec0f20ca4573064a531292ab3918d313 /drivers/net/ethernet/neterion | |
| parent | tc35815: Don't receive packets when the napi budget == 0 (diff) | |
| download | linux-c7b82cc8d95e69afe2dc1038fb73abc048a3bca5.tar.xz linux-c7b82cc8d95e69afe2dc1038fb73abc048a3bca5.zip | |
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>
Diffstat (limited to 'drivers/net/ethernet/neterion')
| -rw-r--r-- | drivers/net/ethernet/neterion/vxge/vxge-main.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/neterion/vxge/vxge-main.c b/drivers/net/ethernet/neterion/vxge/vxge-main.c index c5bb1ace4a74..11adc89959c1 100644 --- 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__); |