netfilter: 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>

net/netfilter/ipset/ip_set_bitmap_ipmac.c

@@ -111,7 +111,7 @@ bitmap_ipmac_test(struct ip_set *set, void *value, u32 timeout, u32 flags)
 		return -EAGAIN;
 	case MAC_FILLED:
 		return data->ether == NULL ||
-		       compare_ether_addr(data->ether, elem->ether) == 0;
+		       ether_addr_equal(data->ether, elem->ether);
 	}
 	return 0;
 }
@@ -225,7 +225,7 @@ bitmap_ipmac_ttest(struct ip_set *set, void *value, u32 timeout, u32 flags)
 		return -EAGAIN;
 	case MAC_FILLED:
 		return (data->ether == NULL ||
-			compare_ether_addr(data->ether, elem->ether) == 0) &&
+			ether_addr_equal(data->ether, elem->ether)) &&
 		       !bitmap_expired(map, data->id);
 	}
 	return 0;

net/netfilter/xt_mac.c

@@ -36,7 +36,7 @@ static bool mac_mt(const struct sk_buff *skb, struct xt_action_param *par)
 		return false;
 	if (skb_mac_header(skb) + ETH_HLEN > skb->data)
 		return false;
-	ret  = compare_ether_addr(eth_hdr(skb)->h_source, info->srcaddr) == 0;
+	ret  = ether_addr_equal(eth_hdr(skb)->h_source, info->srcaddr);
 	ret ^= info->invert;
 	return ret;
 }