diff options
| author | Suresh Reddy <Suresh.Reddy@broadcom.com> | 2016-09-07 19:57:53 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-07 22:44:56 -0700 |
| commit | c27ebf58517536c0006813007680b24db17def47 (patch) | |
| tree | 1b04757f61b15326a8d04cd6496b1dd4afc2c0e5 /drivers/net/ethernet/emulex | |
| parent | 988d44b1636d7f608bd7926493e0f61a034b61db (diff) | |
| download | linux-c27ebf58517536c0006813007680b24db17def47.tar.gz linux-c27ebf58517536c0006813007680b24db17def47.tar.bz2 linux-c27ebf58517536c0006813007680b24db17def47.zip | |
be2net: Fix mac address collision in some configurations
If the device mac address is updated using ndo_set_mac_address(),
while the same mac address is already programmed, the driver does not
detect this condition if its netdev->dev_addr has been changed. The
driver tries to add the same mac address resulting in mac address
collision error. This has been observed in bonding mode-5 configuration.
To fix this, store the mac address configured in HW in the adapter
structure. Use this to compare against the new address being updated
to avoid collision.
Signed-off-by: Suresh Reddy <Suresh.Reddy@broadcom.com>
Signed-off-by: Sathya Perla <sathya.perla@broadcom.com>
Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/emulex')
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be_main.c | 6 |
2 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index eecf24e92fd3..30a26aa39a2b 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -693,6 +693,7 @@ struct be_adapter { u32 fat_dump_len; u16 serial_num[CNTL_SERIAL_NUM_WORDS]; u8 phy_state; /* state of sfp optics (functional, faulted, etc.,) */ + u8 dev_mac[ETH_ALEN]; u32 priv_flags; /* ethtool get/set_priv_flags() */ struct be_error_recovery error_recovery; }; diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index a1c9920b2452..34f63eff6e8a 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -316,7 +316,7 @@ static int be_mac_addr_set(struct net_device *netdev, void *p) /* Proceed further only if, User provided MAC is different * from active MAC */ - if (ether_addr_equal(addr->sa_data, netdev->dev_addr)) + if (ether_addr_equal(addr->sa_data, adapter->dev_mac)) return 0; /* if device is not running, copy MAC to netdev->dev_addr */ @@ -357,6 +357,7 @@ static int be_mac_addr_set(struct net_device *netdev, void *p) goto err; } done: + ether_addr_copy(adapter->dev_mac, addr->sa_data); ether_addr_copy(netdev->dev_addr, addr->sa_data); dev_info(dev, "MAC address changed to %pM\n", addr->sa_data); return 0; @@ -1662,7 +1663,7 @@ static void be_clear_mc_list(struct be_adapter *adapter) static int be_uc_mac_add(struct be_adapter *adapter, int uc_idx) { if (ether_addr_equal((u8 *)&adapter->uc_list[uc_idx * ETH_ALEN], - adapter->netdev->dev_addr)) { + adapter->dev_mac)) { adapter->pmac_id[uc_idx + 1] = adapter->pmac_id[0]; return 0; } @@ -3774,6 +3775,7 @@ static int be_enable_if_filters(struct be_adapter *adapter) status = be_dev_mac_add(adapter, adapter->netdev->dev_addr); if (status) return status; + ether_addr_copy(adapter->dev_mac, adapter->netdev->dev_addr); } if (adapter->vlans_added) |