[RAW] merge raw_sock with raw_opt

No need for two structs, follow the new inet_sock layout
style.
Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/icmp.h

@@ -46,16 +46,15 @@ extern void	icmp_init(struct net_proto_family *ops);
 /* Move into dst.h ? */
 extern int 	xrlim_allow(struct dst_entry *dst, int timeout);
 
-struct raw_opt {
-	struct icmp_filter filter;
-};
-
-/* WARNING: don't change the layout of the members in raw_sock! */
 struct raw_sock {
+	/* inet_sock has to be the first member */
 	struct inet_sock   inet;
-	struct raw_opt	  raw4;
+	struct icmp_filter filter;
 };
 
-#define raw4_sk(__sk) (&((struct raw_sock *)__sk)->raw4)
+static inline struct raw_sock *raw_sk(const struct sock *sk)
+{
+	return (struct raw_sock *)sk;
+}
 
 #endif	/* _ICMP_H */

net/ipv4/raw.c

@@ -135,7 +135,7 @@ static __inline__ int icmp_filter(struct sock *sk, struct sk_buff *skb)
 
 	type = skb->h.icmph->type;
 	if (type < 32) {
-		__u32 data = raw4_sk(sk)->filter.data;
+		__u32 data = raw_sk(sk)->filter.data;
 
 		return ((1 << type) & data) != 0;
 	}
@@ -615,9 +615,10 @@ out:	return err ? err : copied;
 
 static int raw_init(struct sock *sk)
 {
-	struct raw_opt *tp = raw4_sk(sk);
+	struct raw_sock *rp = raw_sk(sk);
+
 	if (inet_sk(sk)->num == IPPROTO_ICMP)
-		memset(&tp->filter, 0, sizeof(tp->filter));
+		memset(&rp->filter, 0, sizeof(rp->filter));
 	return 0;
 }
 
@@ -625,7 +626,7 @@ static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen)
 {
 	if (optlen > sizeof(struct icmp_filter))
 		optlen = sizeof(struct icmp_filter);
-	if (copy_from_user(&raw4_sk(sk)->filter, optval, optlen))
+	if (copy_from_user(&raw_sk(sk)->filter, optval, optlen))
 		return -EFAULT;
 	return 0;
 }
@@ -643,7 +644,7 @@ static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *o
 		len = sizeof(struct icmp_filter);
 	ret = -EFAULT;
 	if (put_user(len, optlen) ||
-	    copy_to_user(optval, &raw4_sk(sk)->filter, len))
+	    copy_to_user(optval, &raw_sk(sk)->filter, len))
 		goto out;
 	ret = 0;
 out:	return ret;