[NET]: Fix sparse warnings

From: Victor Fusco <victor@cetuc.puc-rio.br>

Fix the sparse warning "implicit cast to nocast type"

Signed-off-by: Victor Fusco <victor@cetuc.puc-rio.br>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/skbuff.h

@@ -300,20 +300,26 @@ struct sk_buff {
 #include <asm/system.h>
 
 extern void	       __kfree_skb(struct sk_buff *skb);
-extern struct sk_buff *alloc_skb(unsigned int size, int priority);
+extern struct sk_buff *alloc_skb(unsigned int size,
+				 unsigned int __nocast priority);
 extern struct sk_buff *alloc_skb_from_cache(kmem_cache_t *cp,
-					    unsigned int size, int priority);
+					    unsigned int size,
+					    unsigned int __nocast priority);
 extern void	       kfree_skbmem(struct sk_buff *skb);
-extern struct sk_buff *skb_clone(struct sk_buff *skb, int priority);
-extern struct sk_buff *skb_copy(const struct sk_buff *skb, int priority);
-extern struct sk_buff *pskb_copy(struct sk_buff *skb, int gfp_mask);
+extern struct sk_buff *skb_clone(struct sk_buff *skb,
+				 unsigned int __nocast priority);
+extern struct sk_buff *skb_copy(const struct sk_buff *skb,
+				unsigned int __nocast priority);
+extern struct sk_buff *pskb_copy(struct sk_buff *skb,
+				 unsigned int __nocast gfp_mask);
 extern int	       pskb_expand_head(struct sk_buff *skb,
-					int nhead, int ntail, int gfp_mask);
+					int nhead, int ntail,
+					unsigned int __nocast gfp_mask);
 extern struct sk_buff *skb_realloc_headroom(struct sk_buff *skb,
 					    unsigned int headroom);
 extern struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
 				       int newheadroom, int newtailroom,
-				       int priority);
+				       unsigned int __nocast priority);
 extern struct sk_buff *		skb_pad(struct sk_buff *skb, int pad);
 #define dev_kfree_skb(a)	kfree_skb(a)
 extern void	      skb_over_panic(struct sk_buff *skb, int len,
@@ -464,7 +470,8 @@ static inline int skb_shared(const struct sk_buff *skb)
  *
  *	NULL is returned on a memory allocation failure.
  */
-static inline struct sk_buff *skb_share_check(struct sk_buff *skb, int pri)
+static inline struct sk_buff *skb_share_check(struct sk_buff *skb,
+					      unsigned int __nocast pri)
 {
 	might_sleep_if(pri & __GFP_WAIT);
 	if (skb_shared(skb)) {
@@ -1001,7 +1008,7 @@ static inline void __skb_queue_purge(struct sk_buff_head *list)
  *	%NULL is returned in there is no free memory.
  */
 static inline struct sk_buff *__dev_alloc_skb(unsigned int length,
-					      int gfp_mask)
+					      unsigned int __nocast gfp_mask)
 {
 	struct sk_buff *skb = alloc_skb(length + 16, gfp_mask);
 	if (likely(skb))
@@ -1114,8 +1121,8 @@ static inline int skb_can_coalesce(struct sk_buff *skb, int i,
  *	If there is no free memory -ENOMEM is returned, otherwise zero
  *	is returned and the old skb data released.
  */
-extern int __skb_linearize(struct sk_buff *skb, int gfp);
-static inline int skb_linearize(struct sk_buff *skb, int gfp)
+extern int __skb_linearize(struct sk_buff *skb, unsigned int __nocast gfp);
+static inline int skb_linearize(struct sk_buff *skb, unsigned int __nocast gfp)
 {
 	return __skb_linearize(skb, gfp);
 }

include/net/sock.h

@@ -684,16 +684,17 @@ extern void FASTCALL(release_sock(struct sock *sk));
 #define bh_lock_sock(__sk)	spin_lock(&((__sk)->sk_lock.slock))
 #define bh_unlock_sock(__sk)	spin_unlock(&((__sk)->sk_lock.slock))
 
-extern struct sock		*sk_alloc(int family, int priority,
+extern struct sock		*sk_alloc(int family,
+					  unsigned int __nocast priority,
 					  struct proto *prot, int zero_it);
 extern void			sk_free(struct sock *sk);
 
 extern struct sk_buff		*sock_wmalloc(struct sock *sk,
 					      unsigned long size, int force,
-					      int priority);
+					      unsigned int __nocast priority);
 extern struct sk_buff		*sock_rmalloc(struct sock *sk,
 					      unsigned long size, int force,
-					      int priority);
+					      unsigned int __nocast priority);
 extern void			sock_wfree(struct sk_buff *skb);
 extern void			sock_rfree(struct sk_buff *skb);
 
@@ -708,7 +709,8 @@ extern struct sk_buff 		*sock_alloc_send_skb(struct sock *sk,
 						     unsigned long size,
 						     int noblock,
 						     int *errcode);
-extern void *sock_kmalloc(struct sock *sk, int size, int priority);
+extern void *sock_kmalloc(struct sock *sk, int size,
+			  unsigned int __nocast priority);
 extern void sock_kfree_s(struct sock *sk, void *mem, int size);
 extern void sk_send_sigurg(struct sock *sk);
 
@@ -1132,7 +1134,8 @@ static inline void sk_stream_moderate_sndbuf(struct sock *sk)
 }
 
 static inline struct sk_buff *sk_stream_alloc_pskb(struct sock *sk,
-						   int size, int mem, int gfp)
+						   int size, int mem,
+						   unsigned int __nocast gfp)
 {
 	struct sk_buff *skb;
 	int hdr_len;
@@ -1155,7 +1158,8 @@ static inline struct sk_buff *sk_stream_alloc_pskb(struct sock *sk,
 }
 
 static inline struct sk_buff *sk_stream_alloc_skb(struct sock *sk,
-						  int size, int gfp)
+						  int size,
+						  unsigned int __nocast gfp)
 {
 	return sk_stream_alloc_pskb(sk, size, 0, gfp);
 }
@@ -1188,7 +1192,7 @@ static inline int sock_writeable(const struct sock *sk)
 	return atomic_read(&sk->sk_wmem_alloc) < (sk->sk_sndbuf / 2);
 }
 
-static inline int gfp_any(void)
+static inline unsigned int __nocast gfp_any(void)
 {
 	return in_softirq() ? GFP_ATOMIC : GFP_KERNEL;
 }

include/net/tcp.h

@@ -860,7 +860,8 @@ extern void tcp_send_probe0(struct sock *);
 extern void tcp_send_partial(struct sock *);
 extern int  tcp_write_wakeup(struct sock *);
 extern void tcp_send_fin(struct sock *sk);
-extern void tcp_send_active_reset(struct sock *sk, int priority);
+extern void tcp_send_active_reset(struct sock *sk,
+                                  unsigned int __nocast priority);
 extern int  tcp_send_synack(struct sock *);
 extern void tcp_push_one(struct sock *, unsigned int mss_now);
 extern void tcp_send_ack(struct sock *sk);

net/core/dev.c

@@ -1127,7 +1127,7 @@ static inline int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
 extern void skb_release_data(struct sk_buff *);
 
 /* Keep head the same: replace data */
-int __skb_linearize(struct sk_buff *skb, int gfp_mask)
+int __skb_linearize(struct sk_buff *skb, unsigned int __nocast gfp_mask)
 {
 	unsigned int size;
 	u8 *data;

net/core/skbuff.c

@@ -129,7 +129,7 @@ void skb_under_panic(struct sk_buff *skb, int sz, void *here)
  *	Buffers may only be allocated from interrupts using a @gfp_mask of
  *	%GFP_ATOMIC.
  */
-struct sk_buff *alloc_skb(unsigned int size, int gfp_mask)
+struct sk_buff *alloc_skb(unsigned int size, unsigned int __nocast gfp_mask)
 {
 	struct sk_buff *skb;
 	u8 *data;
@@ -182,7 +182,8 @@ nodata:
  *	%GFP_ATOMIC.
  */
 struct sk_buff *alloc_skb_from_cache(kmem_cache_t *cp,
-				     unsigned int size, int gfp_mask)
+				     unsigned int size,
+				     unsigned int __nocast gfp_mask)
 {
 	struct sk_buff *skb;
 	u8 *data;
@@ -322,7 +323,7 @@ void __kfree_skb(struct sk_buff *skb)
  *	%GFP_ATOMIC.
  */
 
-struct sk_buff *skb_clone(struct sk_buff *skb, int gfp_mask)
+struct sk_buff *skb_clone(struct sk_buff *skb, unsigned int __nocast gfp_mask)
 {
 	struct sk_buff *n = kmem_cache_alloc(skbuff_head_cache, gfp_mask);
 
@@ -460,7 +461,7 @@ static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
  *	header is going to be modified. Use pskb_copy() instead.
  */
 
-struct sk_buff *skb_copy(const struct sk_buff *skb, int gfp_mask)
+struct sk_buff *skb_copy(const struct sk_buff *skb, unsigned int __nocast gfp_mask)
 {
 	int headerlen = skb->data - skb->head;
 	/*
@@ -499,7 +500,7 @@ struct sk_buff *skb_copy(const struct sk_buff *skb, int gfp_mask)
  *	The returned buffer has a reference count of 1.
  */
 
-struct sk_buff *pskb_copy(struct sk_buff *skb, int gfp_mask)
+struct sk_buff *pskb_copy(struct sk_buff *skb, unsigned int __nocast gfp_mask)
 {
 	/*
 	 *	Allocate the copy buffer
@@ -557,7 +558,8 @@ out:
  *	reloaded after call to this function.
  */
 
-int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail, int gfp_mask)
+int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
+		     unsigned int __nocast gfp_mask)
 {
 	int i;
 	u8 *data;
@@ -647,7 +649,8 @@ struct sk_buff *skb_realloc_headroom(struct sk_buff *skb, unsigned int headroom)
  *	only by netfilter in the cases when checksum is recalculated? --ANK
  */
 struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
-				int newheadroom, int newtailroom, int gfp_mask)
+				int newheadroom, int newtailroom,
+				unsigned int __nocast gfp_mask)
 {
 	/*
 	 *	Allocate the copy buffer

net/core/sock.c

@@ -622,7 +622,8 @@ lenout:
  *	@prot: struct proto associated with this new sock instance
  *	@zero_it: if we should zero the newly allocated sock
  */
-struct sock *sk_alloc(int family, int priority, struct proto *prot, int zero_it)
+struct sock *sk_alloc(int family, unsigned int __nocast priority,
+		      struct proto *prot, int zero_it)
 {
 	struct sock *sk = NULL;
 	kmem_cache_t *slab = prot->slab;
@@ -750,7 +751,8 @@ unsigned long sock_i_ino(struct sock *sk)
 /*
  * Allocate a skb from the socket's send buffer.
  */
-struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force, int priority)
+struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force,
+			     unsigned int __nocast priority)
 {
 	if (force || atomic_read(&sk->sk_wmem_alloc) < sk->sk_sndbuf) {
 		struct sk_buff * skb = alloc_skb(size, priority);
@@ -765,7 +767,8 @@ struct sk_buff *sock_wmalloc(struct sock *sk, unsigned long size, int force, int
 /*
  * Allocate a skb from the socket's receive buffer.
  */ 
-struct sk_buff *sock_rmalloc(struct sock *sk, unsigned long size, int force, int priority)
+struct sk_buff *sock_rmalloc(struct sock *sk, unsigned long size, int force,
+			     unsigned int __nocast priority)
 {
 	if (force || atomic_read(&sk->sk_rmem_alloc) < sk->sk_rcvbuf) {
 		struct sk_buff *skb = alloc_skb(size, priority);
@@ -780,7 +783,7 @@ struct sk_buff *sock_rmalloc(struct sock *sk, unsigned long size, int force, int
 /* 
  * Allocate a memory block from the socket's option memory buffer.
  */ 
-void *sock_kmalloc(struct sock *sk, int size, int priority)
+void *sock_kmalloc(struct sock *sk, int size, unsigned int __nocast priority)
 {
 	if ((unsigned)size <= sysctl_optmem_max &&
 	    atomic_read(&sk->sk_omem_alloc) + size < sysctl_optmem_max) {

net/ipv4/tcp_output.c

@@ -1613,7 +1613,7 @@ void tcp_send_fin(struct sock *sk)
  * was unread data in the receive queue.  This behavior is recommended
  * by draft-ietf-tcpimpl-prob-03.txt section 3.10.  -DaveM
  */
-void tcp_send_active_reset(struct sock *sk, int priority)
+void tcp_send_active_reset(struct sock *sk, unsigned int __nocast priority)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 	struct sk_buff *skb;