bridge: Convert compare_ether_addr to ether_addr_equal

Use the new bool function ether_addr_equal to add
some clarity and reduce the likelihood for misuse
of compare_ether_addr for sorting.

Done via cocci script:

$ cat compare_ether_addr.cocci
@@
expression a,b;
@@
-	!compare_ether_addr(a, b)
+	ether_addr_equal(a, b)

@@
expression a,b;
@@
-	compare_ether_addr(a, b)
+	!ether_addr_equal(a, b)

@@
expression a,b;
@@
-	!ether_addr_equal(a, b) == 0
+	ether_addr_equal(a, b)

@@
expression a,b;
@@
-	!ether_addr_equal(a, b) != 0
+	!ether_addr_equal(a, b)

@@
expression a,b;
@@
-	ether_addr_equal(a, b) == 0
+	!ether_addr_equal(a, b)

@@
expression a,b;
@@
-	ether_addr_equal(a, b) != 0
+	ether_addr_equal(a, b)

@@
expression a,b;
@@
-	!!ether_addr_equal(a, b)
+	ether_addr_equal(a, b)

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

5 files changed, 15 insertions, 16 deletions

diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index d6e5929458b1..929e48aed444 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -170,7 +170,7 @@ static int br_set_mac_address(struct net_device *dev, void *p)
                 return -EADDRNOTAVAIL;
 
         spin_lock_bh(&br->lock);
-        if (compare_ether_addr(dev->dev_addr, addr->sa_data)) {
+        if (!ether_addr_equal(dev->dev_addr, addr->sa_data)) {
                 dev->addr_assign_type &= ~NET_ADDR_RANDOM;
                 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
                 br_fdb_change_mac_address(br, addr->sa_data);
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 5945c54bc2de..d21f32383517 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -107,8 +107,8 @@ void br_fdb_changeaddr(struct net_bridge_port *p, const unsigned char *newaddr)
                                 struct net_bridge_port *op;
                                 list_for_each_entry(op, &br->port_list, list) {
                                         if (op != p &&
-                                            !compare_ether_addr(op->dev->dev_addr,
-                                                                f->addr.addr)) {
+                                            ether_addr_equal(op->dev->dev_addr,
+                                                             f->addr.addr)) {
                                                 f->dst = op;
                                                 goto insert;
                                         }
@@ -214,8 +214,8 @@ void br_fdb_delete_by_port(struct net_bridge *br,
                                 struct net_bridge_port *op;
                                 list_for_each_entry(op, &br->port_list, list) {
                                         if (op != p &&
-                                            !compare_ether_addr(op->dev->dev_addr,
-                                                                f->addr.addr)) {
+                                            ether_addr_equal(op->dev->dev_addr,
+                                                             f->addr.addr)) {
                                                 f->dst = op;
                                                 goto skip_delete;
                                         }
@@ -237,7 +237,7 @@ struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
         struct net_bridge_fdb_entry *fdb;
 
         hlist_for_each_entry_rcu(fdb, h, &br->hash[br_mac_hash(addr)], hlist) {
-                if (!compare_ether_addr(fdb->addr.addr, addr)) {
+                if (ether_addr_equal(fdb->addr.addr, addr)) {
                         if (unlikely(has_expired(br, fdb)))
                                 break;
                         return fdb;
@@ -331,7 +331,7 @@ static struct net_bridge_fdb_entry *fdb_find(struct hlist_head *head,
         struct net_bridge_fdb_entry *fdb;
 
         hlist_for_each_entry(fdb, h, head, hlist) {
-                if (!compare_ether_addr(fdb->addr.addr, addr))
+                if (ether_addr_equal(fdb->addr.addr, addr))
                         return fdb;
         }
         return NULL;
@@ -344,7 +344,7 @@ static struct net_bridge_fdb_entry *fdb_find_rcu(struct hlist_head *head,
         struct net_bridge_fdb_entry *fdb;
 
         hlist_for_each_entry_rcu(fdb, h, head, hlist) {
-                if (!compare_ether_addr(fdb->addr.addr, addr))
+                if (ether_addr_equal(fdb->addr.addr, addr))
                         return fdb;
         }
         return NULL;
diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c
index 5a31731be4d0..76f15fda0212 100644
--- a/net/bridge/br_input.c
+++ b/net/bridge/br_input.c
@@ -216,7 +216,7 @@ forward:
                 }
                 /* fall through */
         case BR_STATE_LEARNING:
-                if (!compare_ether_addr(p->br->dev->dev_addr, dest))
+                if (ether_addr_equal(p->br->dev->dev_addr, dest))
                         skb->pkt_type = PACKET_HOST;
 
                 NF_HOOK(NFPROTO_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL,
diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
index e16aade51ae0..fd30a6022dea 100644
--- a/net/bridge/br_stp_bpdu.c
+++ b/net/bridge/br_stp_bpdu.c
@@ -167,7 +167,7 @@ void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
         if (p->state == BR_STATE_DISABLED)
                 goto out;
 
-        if (compare_ether_addr(dest, br->group_addr) != 0)
+        if (!ether_addr_equal(dest, br->group_addr))
                 goto out;
 
         buf = skb_pull(skb, 3);
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index f494496373d6..9d5a414a3943 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -178,7 +178,7 @@ void br_stp_set_enabled(struct net_bridge *br, unsigned long val)
 /* called under bridge lock */
 void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *addr)
 {
-        /* should be aligned on 2 bytes for compare_ether_addr() */
+        /* should be aligned on 2 bytes for ether_addr_equal() */
         unsigned short oldaddr_aligned[ETH_ALEN >> 1];
         unsigned char *oldaddr = (unsigned char *)oldaddr_aligned;
         struct net_bridge_port *p;
@@ -191,12 +191,11 @@ void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *addr)
         memcpy(br->dev->dev_addr, addr, ETH_ALEN);
 
         list_for_each_entry(p, &br->port_list, list) {
-                if (!compare_ether_addr(p->designated_bridge.addr, oldaddr))
+                if (ether_addr_equal(p->designated_bridge.addr, oldaddr))
                         memcpy(p->designated_bridge.addr, addr, ETH_ALEN);
 
-                if (!compare_ether_addr(p->designated_root.addr, oldaddr))
+                if (ether_addr_equal(p->designated_root.addr, oldaddr))
                         memcpy(p->designated_root.addr, addr, ETH_ALEN);
-
         }
 
         br_configuration_update(br);
@@ -205,7 +204,7 @@ void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *addr)
                 br_become_root_bridge(br);
 }
 
-/* should be aligned on 2 bytes for compare_ether_addr() */
+/* should be aligned on 2 bytes for ether_addr_equal() */
 static const unsigned short br_mac_zero_aligned[ETH_ALEN >> 1];
 
 /* called under bridge lock */
@@ -227,7 +226,7 @@ bool br_stp_recalculate_bridge_id(struct net_bridge *br)
 
         }
 
-        if (compare_ether_addr(br->bridge_id.addr, addr) == 0)
+        if (ether_addr_equal(br->bridge_id.addr, addr))
                 return false;   /* no change */
 
         br_stp_change_bridge_id(br, addr);