[IPV6]: flowlabels are net-endian

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/in6.h

@@ -54,7 +54,7 @@ extern const struct in6_addr in6addr_loopback;
 struct sockaddr_in6 {
 	unsigned short int	sin6_family;    /* AF_INET6 */
 	__be16			sin6_port;      /* Transport layer port # */
-	__u32			sin6_flowinfo;  /* IPv6 flow information */
+	__be32			sin6_flowinfo;  /* IPv6 flow information */
 	struct in6_addr		sin6_addr;      /* IPv6 address */
 	__u32			sin6_scope_id;  /* scope id (new in RFC2553) */
 };
@@ -72,7 +72,7 @@ struct ipv6_mreq {
 struct in6_flowlabel_req
 {
 	struct in6_addr	flr_dst;
-	__u32	flr_label;
+	__be32	flr_label;
 	__u8	flr_action;
 	__u8	flr_share;
 	__u16	flr_flags;

include/linux/ip6_tunnel.h

@@ -25,7 +25,7 @@ struct ip6_tnl_parm {
 	__u8 proto;		/* tunnel protocol */
 	__u8 encap_limit;	/* encapsulation limit for tunnel */
 	__u8 hop_limit;		/* hop limit for tunnel */
-	__u32 flowinfo;		/* traffic class and flowlabel for tunnel */
+	__be32 flowinfo;	/* traffic class and flowlabel for tunnel */
 	__u32 flags;		/* tunnel flags */
 	struct in6_addr laddr;	/* local tunnel end-point address */
 	struct in6_addr raddr;	/* remote tunnel end-point address */

include/linux/ipv6.h

@@ -274,7 +274,7 @@ struct ipv6_pinfo {
 	struct in6_addr		*saddr_cache;
 #endif
 
-	__u32			flow_label;
+	__be32			flow_label;
 	__u32			frag_size;
 	__s16			hop_limit;
 	__s16			mcast_hops;

include/net/flow.h

@@ -27,7 +27,7 @@ struct flowi {
 			struct in6_addr		daddr;
 			struct in6_addr		saddr;
 			__u32			fwmark;
-			__u32			flowlabel;
+			__be32			flowlabel;
 		} ip6_u;
 
 		struct {

include/net/ipv6.h

@@ -191,7 +191,7 @@ struct ipv6_txoptions
 struct ip6_flowlabel
 {
 	struct ip6_flowlabel	*next;
-	u32			label;
+	__be32			label;
 	struct in6_addr		dst;
 	struct ipv6_txoptions	*opt;
 	atomic_t		users;
@@ -211,7 +211,7 @@ struct ipv6_fl_socklist
 	struct ip6_flowlabel	*fl;
 };
 
-extern struct ip6_flowlabel	*fl6_sock_lookup(struct sock *sk, u32 label);
+extern struct ip6_flowlabel	*fl6_sock_lookup(struct sock *sk, __be32 label);
 extern struct ipv6_txoptions	*fl6_merge_options(struct ipv6_txoptions * opt_space,
 						   struct ip6_flowlabel * fl,
 						   struct ipv6_txoptions * fopt);

net/ipv6/af_inet6.c

@@ -678,7 +678,7 @@ int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
 	if (np->rxopt.all) {
 		if ((opt->hop && (np->rxopt.bits.hopopts ||
 				  np->rxopt.bits.ohopopts)) ||
-		    ((IPV6_FLOWINFO_MASK & *(u32*)skb->nh.raw) &&
+		    ((IPV6_FLOWINFO_MASK & *(__be32*)skb->nh.raw) &&
 		     np->rxopt.bits.rxflow) ||
 		    (opt->srcrt && (np->rxopt.bits.srcrt ||
 		     np->rxopt.bits.osrcrt)) ||

net/ipv6/datagram.c

@@ -318,7 +318,7 @@ int ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len)
 			ipv6_addr_copy(&sin->sin6_addr,
 			  (struct in6_addr *)(skb->nh.raw + serr->addr_offset));
 			if (np->sndflow)
-				sin->sin6_flowinfo = *(u32*)(skb->nh.raw + serr->addr_offset - 24) & IPV6_FLOWINFO_MASK;
+				sin->sin6_flowinfo = *(__be32*)(skb->nh.raw + serr->addr_offset - 24) & IPV6_FLOWINFO_MASK;
 			if (ipv6_addr_type(&sin->sin6_addr) & IPV6_ADDR_LINKLOCAL)
 				sin->sin6_scope_id = IP6CB(skb)->iif;
 		} else {
@@ -401,8 +401,8 @@ int datagram_recv_ctl(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
 		put_cmsg(msg, SOL_IPV6, IPV6_TCLASS, sizeof(tclass), &tclass);
 	}
 
-	if (np->rxopt.bits.rxflow && (*(u32*)skb->nh.raw & IPV6_FLOWINFO_MASK)) {
-		u32 flowinfo = *(u32*)skb->nh.raw & IPV6_FLOWINFO_MASK;
+	if (np->rxopt.bits.rxflow && (*(__be32*)skb->nh.raw & IPV6_FLOWINFO_MASK)) {
+		__be32 flowinfo = *(__be32*)skb->nh.raw & IPV6_FLOWINFO_MASK;
 		put_cmsg(msg, SOL_IPV6, IPV6_FLOWINFO, sizeof(flowinfo), &flowinfo);
 	}
 
@@ -560,12 +560,12 @@ int datagram_send_ctl(struct msghdr *msg, struct flowi *fl,
 			}
 
 			if (fl->fl6_flowlabel&IPV6_FLOWINFO_MASK) {
-				if ((fl->fl6_flowlabel^*(u32 *)CMSG_DATA(cmsg))&~IPV6_FLOWINFO_MASK) {
+				if ((fl->fl6_flowlabel^*(__be32 *)CMSG_DATA(cmsg))&~IPV6_FLOWINFO_MASK) {
 					err = -EINVAL;
 					goto exit_f;
 				}
 			}
-			fl->fl6_flowlabel = IPV6_FLOWINFO_MASK & *(u32 *)CMSG_DATA(cmsg);
+			fl->fl6_flowlabel = IPV6_FLOWINFO_MASK & *(__be32 *)CMSG_DATA(cmsg);
 			break;
 
 		case IPV6_2292HOPOPTS:

net/ipv6/ip6_flowlabel.c

@@ -61,7 +61,7 @@ static DEFINE_RWLOCK(ip6_fl_lock);
 static DEFINE_RWLOCK(ip6_sk_fl_lock);
 
 
-static __inline__ struct ip6_flowlabel * __fl_lookup(u32 label)
+static __inline__ struct ip6_flowlabel * __fl_lookup(__be32 label)
 {
 	struct ip6_flowlabel *fl;
 
@@ -72,7 +72,7 @@ static __inline__ struct ip6_flowlabel * __fl_lookup(u32 label)
 	return NULL;
 }
 
-static struct ip6_flowlabel * fl_lookup(u32 label)
+static struct ip6_flowlabel * fl_lookup(__be32 label)
 {
 	struct ip6_flowlabel *fl;
 
@@ -153,7 +153,7 @@ static void ip6_fl_gc(unsigned long dummy)
 	write_unlock(&ip6_fl_lock);
 }
 
-static int fl_intern(struct ip6_flowlabel *fl, __u32 label)
+static int fl_intern(struct ip6_flowlabel *fl, __be32 label)
 {
 	fl->label = label & IPV6_FLOWLABEL_MASK;
 
@@ -182,7 +182,7 @@ static int fl_intern(struct ip6_flowlabel *fl, __u32 label)
 
 /* Socket flowlabel lists */
 
-struct ip6_flowlabel * fl6_sock_lookup(struct sock *sk, u32 label)
+struct ip6_flowlabel * fl6_sock_lookup(struct sock *sk, __be32 label)
 {
 	struct ipv6_fl_socklist *sfl;
 	struct ipv6_pinfo *np = inet6_sk(sk);

net/ipv6/ip6_output.c

@@ -217,7 +217,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
 	if (tclass < 0)
 		tclass = 0;
 
-	*(u32 *)hdr = htonl(0x60000000 | (tclass << 20)) | fl->fl6_flowlabel;
+	*(__be32 *)hdr = htonl(0x60000000 | (tclass << 20)) | fl->fl6_flowlabel;
 
 	hdr->payload_len = htons(seg_len);
 	hdr->nexthdr = proto;
@@ -1311,7 +1311,7 @@ int ip6_push_pending_frames(struct sock *sk)
 
 	skb->nh.ipv6h = hdr = (struct ipv6hdr*) skb_push(skb, sizeof(struct ipv6hdr));
 	
-	*(u32*)hdr = fl->fl6_flowlabel |
+	*(__be32*)hdr = fl->fl6_flowlabel |
 		     htonl(0x60000000 | ((int)np->cork.tclass << 20));
 
 	if (skb->len <= sizeof(struct ipv6hdr) + IPV6_MAXPLEN)

net/ipv6/ip6_tunnel.c

@@ -665,9 +665,9 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	dsfield = ipv6_get_dsfield(ipv6h);
 	if ((t->parms.flags & IP6_TNL_F_USE_ORIG_TCLASS))
-		fl.fl6_flowlabel |= (*(__u32 *) ipv6h & IPV6_TCLASS_MASK);
+		fl.fl6_flowlabel |= (*(__be32 *) ipv6h & IPV6_TCLASS_MASK);
 	if ((t->parms.flags & IP6_TNL_F_USE_ORIG_FLOWLABEL))
-		fl.fl6_flowlabel |= (*(__u32 *) ipv6h & IPV6_FLOWLABEL_MASK);
+		fl.fl6_flowlabel |= (*(__be32 *) ipv6h & IPV6_FLOWLABEL_MASK);
 
 	if (encap_limit >= 0 && (opt = create_tel(encap_limit)) == NULL)
 		goto tx_err;
@@ -735,7 +735,7 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	skb->nh.raw = skb_push(skb, sizeof(struct ipv6hdr));
 	ipv6h = skb->nh.ipv6h;
-	*(u32*)ipv6h = fl.fl6_flowlabel | htonl(0x60000000);
+	*(__be32*)ipv6h = fl.fl6_flowlabel | htonl(0x60000000);
 	dsfield = INET_ECN_encapsulate(0, dsfield);
 	ipv6_change_dsfield(ipv6h, ~INET_ECN_MASK, dsfield);
 	ipv6h->payload_len = htons(skb->len - sizeof(struct ipv6hdr));

net/ipv6/route.c

@@ -714,7 +714,7 @@ void ip6_route_input(struct sk_buff *skb)
 #ifdef CONFIG_IPV6_ROUTE_FWMARK
 				.fwmark = skb->nfmark,
 #endif
-				.flowlabel = (* (u32 *) iph)&IPV6_FLOWINFO_MASK,
+				.flowlabel = (* (__be32 *) iph)&IPV6_FLOWINFO_MASK,
 			},
 		},
 		.proto = iph->nexthdr,