diff options
| author | Emil Tantilov <emil.s.tantilov@intel.com> | 2015-10-12 10:56:00 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-11-23 11:08:51 -0800 |
| commit | 465fc643c2dcbe08e0debac80c225f6750b40d3c (patch) | |
| tree | bdc2676304a7b6eb9701d8a9d823b8cb177df154 | |
| parent | 91a76baadec1f30e8441c3d52c2559468a4da693 (diff) | |
ixgbevf: fix spoofed packets with random MAC
If ixgbevf is loaded while the corresponding PF interface is down
and the driver assigns a random MAC address, that address can be
overwritten with the value of hw->mac.perm_addr, which would be 0 at
that point.
To avoid this case we init hw->mac.perm_addr to the randomly generated
address and do not set it unless we receive ACK from ixgbe.
Reported-by: John Greene <jogreene@redhat.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbevf/vf.c | 4 |
2 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index 47c71e1fe1ce..dbbd1be47462 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -2664,6 +2664,7 @@ static int ixgbevf_sw_init(struct ixgbevf_adapter *adapter) dev_info(&pdev->dev, "Assigning random MAC address\n"); eth_hw_addr_random(netdev); ether_addr_copy(hw->mac.addr, netdev->dev_addr); + ether_addr_copy(hw->mac.perm_addr, netdev->dev_addr); } /* Enable dynamic interrupt throttling rates */ diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c index 427f3605cbfc..61a98f4c5746 100644 --- a/drivers/net/ethernet/intel/ixgbevf/vf.c +++ b/drivers/net/ethernet/intel/ixgbevf/vf.c @@ -117,7 +117,9 @@ static s32 ixgbevf_reset_hw_vf(struct ixgbe_hw *hw) msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK)) return IXGBE_ERR_INVALID_MAC_ADDR; - ether_addr_copy(hw->mac.perm_addr, addr); + if (msgbuf[0] == (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK)) + ether_addr_copy(hw->mac.perm_addr, addr); + hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD]; return 0; |