diff options
| author | Mitch A Williams <mitch.a.williams@intel.com> | 2012-11-17 07:10:16 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2012-11-28 03:57:23 -0800 |
| commit | 2c1a10196511a2c1af612a59aa1e5385afca0533 (patch) | |
| tree | 543cfd7a73f6367e204220dc590f2b339696e663 /drivers/net/ethernet/intel/igbvf | |
| parent | 03f52a0a554210d5049eeed9f1bb29047dc807cb (diff) | |
igbvf: work around i350 erratum
On i350 VF devices, VLAN tags will be byte-swapped in the receive
descriptor only when received packets are looped back from other
VFs. Check for this condition and swab the tag if needed.
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igbvf')
| -rw-r--r-- | drivers/net/ethernet/intel/igbvf/defines.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/igbvf/igbvf.h | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/igbvf/netdev.c | 15 |
3 files changed, 15 insertions, 3 deletions
diff --git a/drivers/net/ethernet/intel/igbvf/defines.h b/drivers/net/ethernet/intel/igbvf/defines.h index 3e18045d8f89..d9fa999b1685 100644 --- a/drivers/net/ethernet/intel/igbvf/defines.h +++ b/drivers/net/ethernet/intel/igbvf/defines.h @@ -46,6 +46,7 @@ #define E1000_RXD_ERR_SE 0x02 /* Symbol Error */ #define E1000_RXD_SPC_VLAN_MASK 0x0FFF /* VLAN ID is in lower 12 bits */ +#define E1000_RXDEXT_STATERR_LB 0x00040000 #define E1000_RXDEXT_STATERR_CE 0x01000000 #define E1000_RXDEXT_STATERR_SE 0x02000000 #define E1000_RXDEXT_STATERR_SEQ 0x04000000 diff --git a/drivers/net/ethernet/intel/igbvf/igbvf.h b/drivers/net/ethernet/intel/igbvf/igbvf.h index a895e2f7b34d..fdca7b672776 100644 --- a/drivers/net/ethernet/intel/igbvf/igbvf.h +++ b/drivers/net/ethernet/intel/igbvf/igbvf.h @@ -295,7 +295,7 @@ struct igbvf_info { /* hardware capability, feature, and workaround flags */ #define IGBVF_FLAG_RX_CSUM_DISABLED (1 << 0) - +#define IGBVF_FLAG_RX_LB_VLAN_BSWAP (1 << 1) #define IGBVF_RX_DESC_ADV(R, i) \ (&((((R).desc))[i].rx_desc)) #define IGBVF_TX_DESC_ADV(R, i) \ diff --git a/drivers/net/ethernet/intel/igbvf/netdev.c b/drivers/net/ethernet/intel/igbvf/netdev.c index 4051ec404613..b44b9d3d07f4 100644 --- a/drivers/net/ethernet/intel/igbvf/netdev.c +++ b/drivers/net/ethernet/intel/igbvf/netdev.c @@ -107,12 +107,19 @@ static void igbvf_receive_skb(struct igbvf_adapter *adapter, struct sk_buff *skb, u32 status, u16 vlan) { + u16 vid; + if (status & E1000_RXD_STAT_VP) { - u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; + if ((adapter->flags & IGBVF_FLAG_RX_LB_VLAN_BSWAP) && + (status & E1000_RXDEXT_STATERR_LB)) + vid = be16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; + else + vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; if (test_bit(vid, adapter->active_vlans)) __vlan_hwaccel_put_tag(skb, vid); } - netif_receive_skb(skb); + + napi_gro_receive(&adapter->rx_ring->napi, skb); } static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter, @@ -2767,6 +2774,10 @@ static int __devinit igbvf_probe(struct pci_dev *pdev, /* reset the hardware with the new settings */ igbvf_reset(adapter); + /* set hardware-specific flags */ + if (adapter->hw.mac.type == e1000_vfadapt_i350) + adapter->flags |= IGBVF_FLAG_RX_LB_VLAN_BSWAP; + strcpy(netdev->name, "eth%d"); err = register_netdev(netdev); if (err) |