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ixgbe: Support RX-ALL feature flag.

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This allows the NIC to receive all frames available, including
those with bad FCS, ethernet control frames, and more.

Tested by sending frames with bad FCS.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Ben Greear 2012-03-08 08:28:41 +00:00 committed by Jeff Kirsher
parent f43f313eb7
commit 3f2d1c0f57
1 changed files with 23 additions and 2 deletions
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25
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
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@ -1482,8 +1482,8 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
struct sk_buff *skb;
unsigned int total_rx_bytes = 0, total_rx_packets = 0;
const int current_node = numa_node_id();
#ifdef IXGBE_FCOE
struct ixgbe_adapter *adapter = q_vector->adapter;
#ifdef IXGBE_FCOE
int ddp_bytes = 0;
#endif /* IXGBE_FCOE */
u16 i;
@ -1612,7 +1612,8 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
/* ERR_MASK will only have valid bits if EOP set */
if (unlikely(ixgbe_test_staterr(rx_desc,
IXGBE_RXDADV_ERR_FRAME_ERR_MASK))) {
IXGBE_RXDADV_ERR_FRAME_ERR_MASK) &&
!(adapter->netdev->features & NETIF_F_RXALL))) {
dev_kfree_skb_any(skb);
goto next_desc;
}
@ -3342,6 +3343,7 @@ void ixgbe_set_rx_mode(struct net_device *netdev)
fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
/* set all bits that we expect to always be set */
fctrl &= ~IXGBE_FCTRL_SBP; /* disable store-bad-packets */
fctrl |= IXGBE_FCTRL_BAM;
fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */
fctrl |= IXGBE_FCTRL_PMCF;
@ -3390,6 +3392,18 @@ void ixgbe_set_rx_mode(struct net_device *netdev)
IXGBE_WRITE_REG(hw, IXGBE_VMOLR(adapter->num_vfs), vmolr);
}
/* 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 */
fctrl |= (IXGBE_FCTRL_SBP | /* Receive bad packets */
IXGBE_FCTRL_BAM | /* RX All Bcast Pkts */
IXGBE_FCTRL_PMCF); /* RX All MAC Ctrl Pkts */
fctrl &= ~(IXGBE_FCTRL_DPF);
/* NOTE: VLAN filtering is disabled by setting PROMISC */
}
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
if (netdev->features & NETIF_F_HW_VLAN_RX)
@ -7459,6 +7473,7 @@ static int ixgbe_set_features(struct net_device *netdev,
netdev_features_t data)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
netdev_features_t changed = netdev->features ^ data;
bool need_reset = false;
/* Make sure RSC matches LRO, reset if change */
@ -7495,6 +7510,10 @@ static int ixgbe_set_features(struct net_device *netdev,
need_reset = true;
}
if (changed & NETIF_F_RXALL)
need_reset = true;
netdev->features = data;
if (need_reset)
ixgbe_do_reset(netdev);
@ -7773,6 +7792,8 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
break;
}
netdev->hw_features |= NETIF_F_RXALL;
netdev->vlan_features |= NETIF_F_TSO;
netdev->vlan_features |= NETIF_F_TSO6;
netdev->vlan_features |= NETIF_F_IP_CSUM;