iavf: remove INITIAL_MAC_SET to allow gARP to work properly

IAVF_FLAG_INITIAL_MAC_SET prevents waiting on iavf_is_mac_set_handled() the first time the MAC is set. This breaks gratuitous ARP because the MAC address has not been updated yet when the gARP packet is sent out. Current behaviour: $ echo 1 > /sys/class/net/ens4f0/device/sriov_numvfs iavf 0000:88:02.0: MAC address: ee:04:19:14:ec:ea $ ip addr add 192.168.1.1/24 dev ens4f0v0 $ ip link set dev ens4f0v0 up $ echo 1 > /proc/sys/net/ipv4/conf/ens4f0v0/arp_notify $ ip link set ens4f0v0 addr 00:11:22:33:44:55 07:23:41.676611 ee:04:19:14:ec:ea > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Request who-has 192.168.1.1 tell 192.168.1.1, length 28 With IAVF_FLAG_INITIAL_MAC_SET removed: $ echo 1 > /sys/class/net/ens4f0/device/sriov_numvfs iavf 0000:88:02.0: MAC address: 3e:8a:16:a2:37:6d $ ip addr add 192.168.1.1/24 dev ens4f0v0 $ ip link set dev ens4f0v0 up $ echo 1 > /proc/sys/net/ipv4/conf/ens4f0v0/arp_notify $ ip link set ens4f0v0 addr 00:11:22:33:44:55 07:28:01.836608 00:11:22:33:44:55 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Request who-has 192.168.1.1 tell 192.168.1.1, length 28 Fixes: 35a2443 ("iavf: Add waiting for response from PF in set mac") Signed-off-by: Stefan Assmann <sassmann@kpanic.de> Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
xrh0905 · Nov 18, 2022 · bb861c1 · bb861c1
1 parent 08f1c14
commit bb861c1
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diff --git a/drivers/net/ethernet/intel/iavf/iavf.h b/drivers/net/ethernet/intel/iavf/iavf.h
@@ -298,7 +298,6 @@ struct iavf_adapter {
 #define IAVF_FLAG_QUEUES_DISABLED		BIT(17)
 #define IAVF_FLAG_SETUP_NETDEV_FEATURES		BIT(18)
 #define IAVF_FLAG_REINIT_MSIX_NEEDED		BIT(20)
-#define IAVF_FLAG_INITIAL_MAC_SET		BIT(23)
 /* duplicates for common code */
 #define IAVF_FLAG_DCB_ENABLED			0
 	/* flags for admin queue service task */

diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -1087,12 +1087,6 @@ static int iavf_set_mac(struct net_device *netdev, void *p)
 	if (ret)
 		return ret;
 
-	/* If this is an initial set MAC during VF spawn do not wait */
-	if (adapter->flags & IAVF_FLAG_INITIAL_MAC_SET) {
-		adapter->flags &= ~IAVF_FLAG_INITIAL_MAC_SET;
-		return 0;
-	}
-
 	ret = wait_event_interruptible_timeout(adapter->vc_waitqueue,
 					       iavf_is_mac_set_handled(netdev, addr->sa_data),
 					       msecs_to_jiffies(2500));
@@ -2605,8 +2599,6 @@ static void iavf_init_config_adapter(struct iavf_adapter *adapter)
 		ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr);
 	}
 
-	adapter->flags |= IAVF_FLAG_INITIAL_MAC_SET;
-
 	adapter->tx_desc_count = IAVF_DEFAULT_TXD;
 	adapter->rx_desc_count = IAVF_DEFAULT_RXD;
 	err = iavf_init_interrupt_scheme(adapter);