AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-01-19 08:06:17 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

igb: Support RX-ALL feature flag.

Browse Source 
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: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Ben Greear 2012-03-06 09:41:58 +00:00 committed by Jeff Kirsher
parent 6b8f092284
commit 89eaefb61d
2 changed files with 33 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/intel/igb/e1000_defines.h
View File

@ -134,6 +134,8 @@
#define E1000_RCTL_SZ_256 0x00030000 /* rx buffer size 256 */
#define E1000_RCTL_VFE 0x00040000 /* vlan filter enable */
#define E1000_RCTL_CFIEN 0x00080000 /* canonical form enable */
#define E1000_RCTL_DPF 0x00400000 /* Discard Pause Frames */
#define E1000_RCTL_PMCF 0x00800000 /* pass MAC control frames */
#define E1000_RCTL_SECRC 0x04000000 /* Strip Ethernet CRC */
/*

33
drivers/net/ethernet/intel/igb/igb_main.c
View File

@ -1769,10 +1769,21 @@ static int igb_set_features(struct net_device *netdev,
netdev_features_t features)
{
netdev_features_t changed = netdev->features ^ features;
struct igb_adapter *adapter = netdev_priv(netdev);
if (changed & NETIF_F_HW_VLAN_RX)
igb_vlan_mode(netdev, features);
if (!(changed & NETIF_F_RXALL))
return 0;
netdev->features = features;
if (netif_running(netdev))
igb_reinit_locked(adapter);
else
igb_reset(adapter);
return 0;
}
@ -1954,6 +1965,7 @@ static int __devinit igb_probe(struct pci_dev *pdev,
/* copy netdev features into list of user selectable features */
netdev->hw_features |= netdev->features;
netdev->hw_features |= NETIF_F_RXALL;
/* set this bit last since it cannot be part of hw_features */
netdev->features |= NETIF_F_HW_VLAN_FILTER;
@ -3005,6 +3017,22 @@ void igb_setup_rctl(struct igb_adapter *adapter)
wr32(E1000_QDE, ALL_QUEUES);
}
/* 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.
*/
}
wr32(E1000_RCTL, rctl);
}
@ -6102,8 +6130,9 @@ static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, int budget)
goto next_desc;
}
if (igb_test_staterr(rx_desc,
E1000_RXDEXT_ERR_FRAME_ERR_MASK)) {
if (unlikely((igb_test_staterr(rx_desc,
E1000_RXDEXT_ERR_FRAME_ERR_MASK))
&& !(rx_ring->netdev->features & NETIF_F_RXALL))) {
dev_kfree_skb_any(skb);
goto next_desc;
}