1 files changed, 46 insertions, 39 deletions

diff --git a/net/ipx/af_ipx.c b/net/ipx/af_ipx.c
index bef3f61569f76..76c661566dfda 100644
--- a/net/ipx/af_ipx.c
+++ b/net/ipx/af_ipx.c
@@ -83,13 +83,13 @@ DEFINE_SPINLOCK(ipx_interfaces_lock);
 struct ipx_interface *ipx_primary_net;
 struct ipx_interface *ipx_internal_net;
 
-extern int ipxrtr_add_route(__u32 network, struct ipx_interface *intrfc,
+extern int ipxrtr_add_route(__be32 network, struct ipx_interface *intrfc,
 			    unsigned char *node);
 extern void ipxrtr_del_routes(struct ipx_interface *intrfc);
 extern int ipxrtr_route_packet(struct sock *sk, struct sockaddr_ipx *usipx,
 			       struct iovec *iov, int len, int noblock);
 extern int ipxrtr_route_skb(struct sk_buff *skb);
-extern struct ipx_route *ipxrtr_lookup(__u32 net);
+extern struct ipx_route *ipxrtr_lookup(__be32 net);
 extern int ipxrtr_ioctl(unsigned int cmd, void __user *arg);
 
 #undef IPX_REFCNT_DEBUG
@@ -177,7 +177,7 @@ static void ipxitf_clear_primary_net(void)
 }
 
 static struct ipx_interface *__ipxitf_find_using_phys(struct net_device *dev,
-						      unsigned short datalink)
+						      __be16 datalink)
 {
 	struct ipx_interface *i;
 
@@ -190,7 +190,7 @@ out:
 }
 
 static struct ipx_interface *ipxitf_find_using_phys(struct net_device *dev,
-						    unsigned short datalink)
+						    __be16 datalink)
 {
 	struct ipx_interface *i;
 
@@ -202,7 +202,7 @@ static struct ipx_interface *ipxitf_find_using_phys(struct net_device *dev,
 	return i;
 }
 
-struct ipx_interface *ipxitf_find_using_net(__u32 net)
+struct ipx_interface *ipxitf_find_using_net(__be32 net)
 {
 	struct ipx_interface *i;
 
@@ -237,7 +237,7 @@ static void ipxitf_insert_socket(struct ipx_interface *intrfc, struct sock *sk)
 
 /* caller must hold intrfc->if_sklist_lock */
 static struct sock *__ipxitf_find_socket(struct ipx_interface *intrfc,
-					 unsigned short port)
+					 __be16 port)
 {
 	struct sock *s;
 	struct hlist_node *node;
@@ -252,7 +252,7 @@ found:
 
 /* caller must hold a reference to intrfc */
 static struct sock *ipxitf_find_socket(struct ipx_interface *intrfc,
-					unsigned short port)
+					__be16 port)
 {
 	struct sock *s;
 
@@ -268,7 +268,7 @@ static struct sock *ipxitf_find_socket(struct ipx_interface *intrfc,
 #ifdef CONFIG_IPX_INTERN
 static struct sock *ipxitf_find_internal_socket(struct ipx_interface *intrfc,
 						unsigned char *ipx_node,
-						unsigned short port)
+						__be16 port)
 {
 	struct sock *s;
 	struct hlist_node *node;
@@ -600,10 +600,10 @@ int ipxitf_send(struct ipx_interface *intrfc, struct sk_buff *skb, char *node)
 
 	/* see if we need to include the netnum in the route list */
 	if (IPX_SKB_CB(skb)->last_hop.index >= 0) {
-		u32 *last_hop = (u32 *)(((u8 *) skb->data) +
+		__be32 *last_hop = (__be32 *)(((u8 *) skb->data) +
 				sizeof(struct ipxhdr) +
 				IPX_SKB_CB(skb)->last_hop.index *
-				sizeof(u32));
+				sizeof(__be32));
 		*last_hop = IPX_SKB_CB(skb)->last_hop.netnum;
 		IPX_SKB_CB(skb)->last_hop.index = -1;
 	}
@@ -772,7 +772,7 @@ static void ipxitf_discover_netnum(struct ipx_interface *intrfc,
 		} else {
 			printk(KERN_WARNING "IPX: Network number collision "
 				"%lx\n        %s %s and %s %s\n",
-				(unsigned long) htonl(cb->ipx_source_net),
+				(unsigned long) ntohl(cb->ipx_source_net),
 				ipx_device_name(i),
 				ipx_frame_name(i->if_dlink_type),
 				ipx_device_name(intrfc),
@@ -812,7 +812,7 @@ static int ipxitf_pprop(struct ipx_interface *intrfc, struct sk_buff *skb)
 	int i, rc = -EINVAL;
 	struct ipx_interface *ifcs;
 	char *c;
-	u32 *l;
+	__be32 *l;
 
 	/* Illegal packet - too many hops or too short */
 	/* We decide to throw it away: no broadcasting, no local processing.
@@ -833,7 +833,7 @@ static int ipxitf_pprop(struct ipx_interface *intrfc, struct sk_buff *skb)
 		goto out;
 	
 	c = ((u8 *) ipx) + sizeof(struct ipxhdr);
-	l = (u32 *) c;
+	l = (__be32 *) c;
 
 	/* Don't broadcast packet if already seen this net */
 	for (i = 0; i < IPX_SKB_CB(skb)->ipx_tctrl; i++)
@@ -855,7 +855,7 @@ static int ipxitf_pprop(struct ipx_interface *intrfc, struct sk_buff *skb)
 		/* That aren't in the list */
 		if (ifcs == intrfc)
 			continue;
-		l = (__u32 *) c;
+		l = (__be32 *) c;
 		/* don't consider the last entry in the packet list,
 		 * it is our netnum, and it is not there yet */
 		for (i = 0; i < IPX_SKB_CB(skb)->ipx_tctrl; i++)
@@ -885,8 +885,8 @@ static void ipxitf_insert(struct ipx_interface *intrfc)
 		ipx_primary_net = intrfc;
 }
 
-static struct ipx_interface *ipxitf_alloc(struct net_device *dev, __u32 netnum,
-					  unsigned short dlink_type,
+static struct ipx_interface *ipxitf_alloc(struct net_device *dev, __be32 netnum,
+					  __be16 dlink_type,
 					  struct datalink_proto *dlink,
 					  unsigned char internal,
 					  int ipx_offset)
@@ -960,7 +960,7 @@ static __be16 ipx_map_frame_type(unsigned char type)
 static int ipxitf_create(struct ipx_interface_definition *idef)
 {
 	struct net_device *dev;
-	unsigned short dlink_type = 0;
+	__be16 dlink_type = 0;
 	struct datalink_proto *datalink = NULL;
 	struct ipx_interface *intrfc;
 	int rc;
@@ -1073,7 +1073,7 @@ out:
 static int ipxitf_delete(struct ipx_interface_definition *idef)
 {
 	struct net_device *dev = NULL;
-	unsigned short dlink_type = 0;
+	__be16 dlink_type = 0;
 	struct ipx_interface *intrfc;
 	int rc = 0;
 
@@ -1110,7 +1110,7 @@ out:
 }
 
 static struct ipx_interface *ipxitf_auto_create(struct net_device *dev,
-						unsigned short dlink_type)
+						__be16 dlink_type)
 {
 	struct ipx_interface *intrfc = NULL;
 	struct datalink_proto *datalink;
@@ -1122,7 +1122,7 @@ static struct ipx_interface *ipxitf_auto_create(struct net_device *dev,
 	if (dev->addr_len > IPX_NODE_LEN)
 		goto out;
 
-	switch (htons(dlink_type)) {
+	switch (ntohs(dlink_type)) {
 	case ETH_P_IPX:		datalink = pEII_datalink;	break;
 	case ETH_P_802_2:	datalink = p8022_datalink;	break;
 	case ETH_P_SNAP:	datalink = pSNAP_datalink;	break;
@@ -1234,27 +1234,27 @@ static int ipxitf_ioctl(unsigned int cmd, void __user *arg)
 /* Note: We assume ipx_tctrl==0 and htons(length)==ipx_pktsize */
 /* This functions should *not* mess with packet contents */
 
-__u16 ipx_cksum(struct ipxhdr *packet, int length) 
+__be16 ipx_cksum(struct ipxhdr *packet, int length)
 {
 	/* 
 	 *	NOTE: sum is a net byte order quantity, which optimizes the 
 	 *	loop. This only works on big and little endian machines. (I
 	 *	don't know of a machine that isn't.)
 	 */
-	/* start at ipx_dest - We skip the checksum field and start with
-	 * ipx_type before the loop, not considering ipx_tctrl in the calc */
-	__u16 *p = (__u16 *)&packet->ipx_dest;
-	__u32 i = (length >> 1) - 1; /* Number of complete words */
-	__u32 sum = packet->ipx_type << sizeof(packet->ipx_tctrl); 
-
-	/* Loop through all complete words except the checksum field,
-	 * ipx_type (accounted above) and ipx_tctrl (not used in the cksum) */
-	while (--i)
+	/* handle the first 3 words separately; checksum should be skipped
+	 * and ipx_tctrl masked out */
+	__u16 *p = (__u16 *)packet;
+	__u32 sum = p[1] + (p[2] & (__force u16)htons(0x00ff));
+	__u32 i = (length >> 1) - 3; /* Number of remaining complete words */
+
+	/* Loop through them */
+	p += 3;
+	while (i--)
 		sum += *p++;
 
 	/* Add on the last part word if it exists */
 	if (packet->ipx_pktsize & htons(1))
-		sum += ntohs(0xff00) & *p;
+		sum += (__force u16)htons(0xff00) & *p;
 
 	/* Do final fixup */
 	sum = (sum & 0xffff) + (sum >> 16);
@@ -1263,10 +1263,17 @@ __u16 ipx_cksum(struct ipxhdr *packet, int length)
 	if (sum >= 0x10000)
 		sum++;
 
-	return ~sum;
+	/*
+	 * Leave 0 alone; we don't want 0xffff here.  Note that we can't get
+	 * here with 0x10000, so this check is the same as ((__u16)sum)
+	 */
+	if (sum)
+		sum = ~sum;
+
+	return (__force __be16)sum;
 }
 
-const char *ipx_frame_name(unsigned short frame)
+const char *ipx_frame_name(__be16 frame)
 {
 	char* rc = "None";
 
@@ -1401,7 +1408,7 @@ out:
 
 /* caller must hold a reference to intrfc */
 
-static unsigned short ipx_first_free_socketnum(struct ipx_interface *intrfc)
+static __be16 ipx_first_free_socketnum(struct ipx_interface *intrfc)
 {
 	unsigned short socketNum = intrfc->if_sknum;
 
@@ -1410,7 +1417,7 @@ static unsigned short ipx_first_free_socketnum(struct ipx_interface *intrfc)
 	if (socketNum < IPX_MIN_EPHEMERAL_SOCKET)
 		socketNum = IPX_MIN_EPHEMERAL_SOCKET;
 
-	while (__ipxitf_find_socket(intrfc, ntohs(socketNum)))
+	while (__ipxitf_find_socket(intrfc, htons(socketNum)))
 		if (socketNum > IPX_MAX_EPHEMERAL_SOCKET)
 			socketNum = IPX_MIN_EPHEMERAL_SOCKET;
 		else
@@ -1419,7 +1426,7 @@ static unsigned short ipx_first_free_socketnum(struct ipx_interface *intrfc)
 	spin_unlock_bh(&intrfc->if_sklist_lock);
 	intrfc->if_sknum = socketNum;
 
-	return ntohs(socketNum);
+	return htons(socketNum);
 }
 
 static int ipx_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
@@ -1473,7 +1480,7 @@ static int ipx_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 						ipxs->port)) {
 			SOCK_DEBUG(sk,
 				"IPX: bind failed because port %X in use.\n",
-				ntohs((int)addr->sipx_port));
+				ntohs(addr->sipx_port));
 			goto out_put;
 		}
 	} else {
@@ -1488,7 +1495,7 @@ static int ipx_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 		if (ipxitf_find_socket(intrfc, addr->sipx_port)) {
 			SOCK_DEBUG(sk,
 				"IPX: bind failed because port %X in use.\n",
-				ntohs((int)addr->sipx_port));
+				ntohs(addr->sipx_port));
 			goto out_put;
 		}
 	}
@@ -1665,7 +1672,7 @@ static int ipx_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_ty
 	intrfc = ipxitf_find_using_phys(dev, pt->type);
 	if (!intrfc) {
 		if (ipxcfg_auto_create_interfaces &&
-		   ntohl(IPX_SKB_CB(skb)->ipx_dest_net)) {
+		   IPX_SKB_CB(skb)->ipx_dest_net) {
 			intrfc = ipxitf_auto_create(dev, pt->type);
 			if (intrfc)
 				ipxitf_hold(intrfc);