[XFRM]: misc annotations

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

include/net/xfrm.h

@@ -951,9 +951,9 @@ extern int xfrm6_input_addr(struct sk_buff *skb, xfrm_address_t *daddr,
 			    xfrm_address_t *saddr, u8 proto);
 extern int xfrm6_tunnel_register(struct xfrm6_tunnel *handler);
 extern int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler);
-extern u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr);
+extern __be32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr);
 extern void xfrm6_tunnel_free_spi(xfrm_address_t *saddr);
-extern u32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr);
+extern __be32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr);
 extern int xfrm6_output(struct sk_buff *skb);
 extern int xfrm6_find_1stfragopt(struct xfrm_state *x, struct sk_buff *skb,
 				 u8 **prevhdr);
@@ -1033,7 +1033,7 @@ static inline int xfrm_addr_cmp(xfrm_address_t *a, xfrm_address_t *b,
 	switch (family) {
 	default:
 	case AF_INET:
-		return a->a4 - b->a4;
+		return (__force __u32)a->a4 - (__force __u32)b->a4;
 	case AF_INET6:
 		return ipv6_addr_cmp((struct in6_addr *)a,
 				     (struct in6_addr *)b);

net/ipv4/xfrm4_policy.c

@@ -72,8 +72,8 @@ __xfrm4_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int
 	struct dst_entry *dst, *dst_prev;
 	struct rtable *rt0 = (struct rtable*)(*dst_p);
 	struct rtable *rt = rt0;
-	u32 remote = fl->fl4_dst;
-	u32 local  = fl->fl4_src;
+	__be32 remote = fl->fl4_dst;
+	__be32 local  = fl->fl4_src;
 	struct flowi fl_tunnel = {
 		.nl_u = {
 			.ip4_u = {
@@ -203,7 +203,7 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl)
 		case IPPROTO_SCTP:
 		case IPPROTO_DCCP:
 			if (pskb_may_pull(skb, xprth + 4 - skb->data)) {
-				u16 *ports = (u16 *)xprth;
+				__be16 *ports = (__be16 *)xprth;
 
 				fl->fl_ip_sport = ports[0];
 				fl->fl_ip_dport = ports[1];

net/ipv6/xfrm6_policy.c

@@ -278,7 +278,7 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl)
 		case IPPROTO_SCTP:
 		case IPPROTO_DCCP:
 			if (pskb_may_pull(skb, skb->nh.raw + offset + 4 - skb->data)) {
-				u16 *ports = (u16 *)exthdr;
+				__be16 *ports = (__be16 *)exthdr;
 
 				fl->fl_ip_sport = ports[0];
 				fl->fl_ip_dport = ports[1];

net/ipv6/xfrm6_tunnel.c

@@ -62,7 +62,7 @@ static unsigned inline xfrm6_tunnel_spi_hash_byaddr(xfrm_address_t *addr)
 {
 	unsigned h;
 
-	h = addr->a6[0] ^ addr->a6[1] ^ addr->a6[2] ^ addr->a6[3];
+	h = (__force u32)(addr->a6[0] ^ addr->a6[1] ^ addr->a6[2] ^ addr->a6[3]);
 	h ^= h >> 16;
 	h ^= h >> 8;
 	h &= XFRM6_TUNNEL_SPI_BYADDR_HSIZE - 1;
@@ -126,7 +126,7 @@ static struct xfrm6_tunnel_spi *__xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr)
 	return NULL;
 }
 
-u32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr)
+__be32 xfrm6_tunnel_spi_lookup(xfrm_address_t *saddr)
 {
 	struct xfrm6_tunnel_spi *x6spi;
 	u32 spi;
@@ -196,7 +196,7 @@ try_next_2:;
 	return spi;
 }
 
-u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr)
+__be32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr)
 {
 	struct xfrm6_tunnel_spi *x6spi;
 	u32 spi;