[NET]: Return EDESTADDRREQ as appropriate in sendmsg implementations.

Another 1003.1 fix:

[EDESTADDRREQ]
    The socket is not connection-mode and does not have its peer
    address set, and no destination address was specified.

fixes sendmsg in ipv{4,6}/{raw,udp}

net/ipv4/raw.c

@@ -383,7 +383,7 @@ static int raw_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 		 * IP_HDRINCL is much more convenient.
 		 */
 	} else {
-		err = -EINVAL;
+		err = -EDESTADDRREQ;
 		if (sk->sk_state != TCP_ESTABLISHED) 
 			goto out;
 		daddr = inet->daddr;

net/ipv4/udp.c

@@ -540,7 +540,7 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 			return -EINVAL;
 	} else {
 		if (sk->sk_state != TCP_ESTABLISHED)
-			return -ENOTCONN;
+			return -EDESTADDRREQ;
 		daddr = inet->daddr;
 		dport = inet->dport;
 		/* Open fast path for connected socket.

net/ipv6/raw.c

@@ -602,7 +602,7 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg
 			fl.oif = sin6->sin6_scope_id;
 	} else {
 		if (sk->sk_state != TCP_ESTABLISHED) 
-			return(-EINVAL);
+			return -EDESTADDRREQ;
 		
 		proto = inet->num;
 		daddr = &np->daddr;

net/ipv6/udp.c

@@ -862,7 +862,7 @@ static int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg
 			fl.oif = sin6->sin6_scope_id;
 	} else {
 		if (sk->sk_state != TCP_ESTABLISHED)
-			return -ENOTCONN;
+			return -EDESTADDRREQ;
 
 		up->dport = inet->dport;
 		daddr = &np->daddr;