netdev - [PATCH net-next 2/4] bonding: use common mac addr checks

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Date:   Fri, 11 May 2018 15:25:46 -0400
From:   Debabrata Banerjee <dbanerje@...mai.com>
To:     "David S . Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Cc:     Jay Vosburgh <j.vosburgh@...il.com>,
        Veaceslav Falico <vfalico@...il.com>,
        Andy Gospodarek <andy@...yhouse.net>, dbanerje@...mai.com
Subject: [PATCH net-next 2/4] bonding: use common mac addr checks

Replace homegrown mac addr checks with faster defs from etherdevice.h

Signed-off-by: Debabrata Banerjee <dbanerje@...mai.com>
---
 drivers/net/bonding/bond_alb.c | 28 +++++++++-------------------
 1 file changed, 9 insertions(+), 19 deletions(-)

diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index c2f6c58e4e6a..180e50f7806f 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -40,11 +40,6 @@
 #include <net/bonding.h>
 #include <net/bond_alb.h>
 
-
-
-static const u8 mac_bcast[ETH_ALEN + 2] __long_aligned = {
-	0xff, 0xff, 0xff, 0xff, 0xff, 0xff
-};
 static const u8 mac_v6_allmcast[ETH_ALEN + 2] __long_aligned = {
 	0x33, 0x33, 0x00, 0x00, 0x00, 0x01
 };
@@ -420,9 +415,7 @@ static void rlb_clear_slave(struct bonding *bond, struct slave *slave)
 
 			if (assigned_slave) {
 				rx_hash_table[index].slave = assigned_slave;
-				if (!ether_addr_equal_64bits(rx_hash_table[index].mac_dst,
-							     mac_bcast) &&
-				    !is_zero_ether_addr(rx_hash_table[index].mac_dst)) {
+				if (is_valid_ether_addr(rx_hash_table[index].mac_dst)) {
 					bond_info->rx_hashtbl[index].ntt = 1;
 					bond_info->rx_ntt = 1;
 					/* A slave has been removed from the
@@ -525,8 +518,7 @@ static void rlb_req_update_slave_clients(struct bonding *bond, struct slave *sla
 		client_info = &(bond_info->rx_hashtbl[hash_index]);
 
 		if ((client_info->slave == slave) &&
-		    !ether_addr_equal_64bits(client_info->mac_dst, mac_bcast) &&
-		    !is_zero_ether_addr(client_info->mac_dst)) {
+		    is_valid_ether_addr(client_info->mac_dst)) {
 			client_info->ntt = 1;
 			ntt = 1;
 		}
@@ -567,8 +559,7 @@ static void rlb_req_update_subnet_clients(struct bonding *bond, __be32 src_ip)
 		if ((client_info->ip_src == src_ip) &&
 		    !ether_addr_equal_64bits(client_info->slave->dev->dev_addr,
 					     bond->dev->dev_addr) &&
-		    !ether_addr_equal_64bits(client_info->mac_dst, mac_bcast) &&
-		    !is_zero_ether_addr(client_info->mac_dst)) {
+		    is_valid_ether_addr(client_info->mac_dst)) {
 			client_info->ntt = 1;
 			bond_info->rx_ntt = 1;
 		}
@@ -596,7 +587,7 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon
 		if ((client_info->ip_src == arp->ip_src) &&
 		    (client_info->ip_dst == arp->ip_dst)) {
 			/* the entry is already assigned to this client */
-			if (!ether_addr_equal_64bits(arp->mac_dst, mac_bcast)) {
+			if (!is_broadcast_ether_addr(arp->mac_dst)) {
 				/* update mac address from arp */
 				ether_addr_copy(client_info->mac_dst, arp->mac_dst);
 			}
@@ -644,8 +635,7 @@ static struct slave *rlb_choose_channel(struct sk_buff *skb, struct bonding *bon
 		ether_addr_copy(client_info->mac_src, arp->mac_src);
 		client_info->slave = assigned_slave;
 
-		if (!ether_addr_equal_64bits(client_info->mac_dst, mac_bcast) &&
-		    !is_zero_ether_addr(client_info->mac_dst)) {
+		if (is_valid_ether_addr(client_info->mac_dst)) {
 			client_info->ntt = 1;
 			bond->alb_info.rx_ntt = 1;
 		} else {
@@ -1418,9 +1408,9 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
 	case ETH_P_IP: {
 		const struct iphdr *iph = ip_hdr(skb);
 
-		if (ether_addr_equal_64bits(eth_data->h_dest, mac_bcast) ||
-		    (iph->daddr == ip_bcast) ||
-		    (iph->protocol == IPPROTO_IGMP)) {
+		if (is_broadcast_ether_addr(eth_data->h_dest) ||
+		    iph->daddr == ip_bcast ||
+		    iph->protocol == IPPROTO_IGMP) {
 			do_tx_balance = false;
 			break;
 		}
@@ -1432,7 +1422,7 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
 		/* IPv6 doesn't really use broadcast mac address, but leave
 		 * that here just in case.
 		 */
-		if (ether_addr_equal_64bits(eth_data->h_dest, mac_bcast)) {
+		if (is_broadcast_ether_addr(eth_data->h_dest)) {
 			do_tx_balance = false;
 			break;
 		}
-- 
2.17.0