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authorJohn Fastabend <john.r.fastabend@intel.com>2012-05-15 06:12:17 (GMT)
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2012-06-06 04:04:25 (GMT)
commit43e95f11ac0b06fec2c58431b092a60934d730e2 (patch)
tree1f905f82ba8cc81d5afcd998f7941212abc8b642
parent146d4cc98d660cbdeae52ae35a4d038d0dab6da5 (diff)
downloadlinux-43e95f11ac0b06fec2c58431b092a60934d730e2.tar.xz
ixgbe: IXGBE_RXD_STAT_VP set even with Rx stripping enabled
The hardware bit IXGBE_RXD_STAT_VP appears to be set even when Rx stripping is disabled. This results in passing frames up the stack which do not have the 802.1Q tag stripped but have the tci bits set as if it was. Working around this with a check for the feature flag bit. I would welcome any better ideas or a pointer to exactly which bits in the hardware register need to be cleared to get the IXGBE_RXD_STAT_VP bit to be set per data sheet. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Acked-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Marcus Dennis <marcusx.e.dennis@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_main.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index b8b2087..17ad6a3 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -1390,6 +1390,8 @@ static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
union ixgbe_adv_rx_desc *rx_desc,
struct sk_buff *skb)
{
+ struct net_device *dev = rx_ring->netdev;
+
ixgbe_update_rsc_stats(rx_ring, skb);
ixgbe_rx_hash(rx_ring, rx_desc, skb);
@@ -1401,14 +1403,15 @@ static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
ixgbe_ptp_rx_hwtstamp(rx_ring->q_vector, skb);
#endif
- if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) {
+ if ((dev->features & NETIF_F_HW_VLAN_RX) &&
+ ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) {
u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan);
__vlan_hwaccel_put_tag(skb, vid);
}
skb_record_rx_queue(skb, rx_ring->queue_index);
- skb->protocol = eth_type_trans(skb, rx_ring->netdev);
+ skb->protocol = eth_type_trans(skb, dev);
}
static void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector,