diff options
| author | Ben Greear <greearb@candelatech.com> | 2012-02-11 15:39:51 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2012-02-24 01:44:50 -0800 |
| commit | cf955e6c96cb9af2dce7093a8e3a5e808555c8a4 (patch) | |
| tree | 79d8aa8e56564b9a840b43283666a79cf7da9f0a | |
| parent | 5e0c03c8cd40e5c3b7ba624b8ba9a343de79ade1 (diff) | |
| download | linux-cf955e6c96cb9af2dce7093a8e3a5e808555c8a4.tar.bz2 | |
e1000e: Support RXALL feature flag.
This allows the NIC to receive all frames available, including
those with bad FCS, un-matched vlans, ethernet control frames,
and more.
Tested by sending frames with bad FCS.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/defines.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/netdev.c | 29 |
2 files changed, 26 insertions, 4 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/defines.h b/drivers/net/ethernet/intel/e1000e/defines.h index 1af30b967a4f..3a5025917163 100644 --- a/drivers/net/ethernet/intel/e1000e/defines.h +++ b/drivers/net/ethernet/intel/e1000e/defines.h @@ -177,6 +177,7 @@ #define E1000_RCTL_VFE 0x00040000 /* vlan filter enable */ #define E1000_RCTL_CFIEN 0x00080000 /* canonical form enable */ #define E1000_RCTL_CFI 0x00100000 /* canonical form indicator */ +#define E1000_RCTL_DPF 0x00400000 /* Discard Pause Frames */ #define E1000_RCTL_PMCF 0x00800000 /* pass MAC control frames */ #define E1000_RCTL_BSEX 0x02000000 /* Buffer size extension */ #define E1000_RCTL_SECRC 0x04000000 /* Strip Ethernet CRC */ diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 340442c4f381..c30e99ee66c6 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -926,7 +926,8 @@ static bool e1000_clean_rx_irq(struct e1000_ring *rx_ring, int *work_done, goto next_desc; } - if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { + if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && + !(netdev->features & NETIF_F_RXALL))) { /* recycle */ buffer_info->skb = skb; goto next_desc; @@ -1255,7 +1256,8 @@ static bool e1000_clean_rx_irq_ps(struct e1000_ring *rx_ring, int *work_done, goto next_desc; } - if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { + if (unlikely((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && + !(netdev->features & NETIF_F_RXALL))) { dev_kfree_skb_irq(skb); goto next_desc; } @@ -1454,7 +1456,8 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_ring *rx_ring, int *work_done, /* errors is only valid for DD + EOP descriptors */ if (unlikely((staterr & E1000_RXD_STAT_EOP) && - (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK))) { + ((staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) && + !(netdev->features & NETIF_F_RXALL)))) { /* recycle both page and skb */ buffer_info->skb = skb; /* an error means any chain goes out the window too */ @@ -2997,6 +3000,22 @@ static void e1000_setup_rctl(struct e1000_adapter *adapter) ew32(PSRCTL, psrctl); } + /* This is useful for sniffing bad packets. */ + if (adapter->netdev->features & NETIF_F_RXALL) { + /* UPE and MPE will be handled by normal PROMISC logic + * in e1000e_set_rx_mode */ + rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ + E1000_RCTL_BAM | /* RX All Bcast Pkts */ + E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ + + rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ + E1000_RCTL_DPF | /* Allow filtered pause */ + E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ + /* Do not mess with E1000_CTRL_VME, it affects transmit as well, + * and that breaks VLANs. + */ + } + ew32(RFCTL, rfctl); ew32(RCTL, rctl); /* just started the receive unit, no need to restart */ @@ -6005,7 +6024,8 @@ static int e1000_set_features(struct net_device *netdev, adapter->flags |= FLAG_TSO_FORCE; if (!(changed & (NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_TX | - NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS))) + NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_RXFCS | + NETIF_F_RXALL))) return 0; /* @@ -6233,6 +6253,7 @@ static int __devinit e1000_probe(struct pci_dev *pdev, netdev->hw_features = netdev->features; netdev->hw_features |= NETIF_F_RXFCS; netdev->priv_flags |= IFF_SUPP_NOFCS; + netdev->hw_features |= NETIF_F_RXALL; if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) netdev->features |= NETIF_F_HW_VLAN_FILTER; |