X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fnet%2Fsock.h;h=dc4b92b8abea93068d231562288ab2563236e573;hb=5084205faf45384fff25c4cf77dd5c96279283ad;hp=324b3ea233d6000f04e4d5894b799535bb397e6e;hpb=912b2539e1e062cec73e2e61448e507f7719bd08;p=linux-2.6

diff --git a/include/net/sock.h b/include/net/sock.h
index 324b3ea233..dc4b92b8ab 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -665,7 +665,6 @@ struct sock_iocb {
 	struct sock		*sk;
 	struct scm_cookie	*scm;
 	struct msghdr		*msg, async_msg;
-	struct iovec		async_iov;
 	struct kiocb		*kiocb;
 };
 
@@ -746,7 +745,13 @@ static inline int sk_stream_wmem_schedule(struct sock *sk, int size)
  */
 #define sock_owned_by_user(sk)	((sk)->sk_lock.owner)
 
-extern void FASTCALL(lock_sock(struct sock *sk));
+extern void FASTCALL(lock_sock_nested(struct sock *sk, int subclass));
+
+static inline void lock_sock(struct sock *sk)
+{
+	lock_sock_nested(sk, 0);
+}
+
 extern void FASTCALL(release_sock(struct sock *sk));
 
 /* BH context may only use the following locking interface. */
@@ -862,33 +867,37 @@ extern void sock_init_data(struct socket *sock, struct sock *sk);
  *
  */
 
-static inline int sk_filter(struct sock *sk, struct sk_buff *skb, int needlock)
+static inline int sk_filter(struct sock *sk, struct sk_buff *skb)
 {
 	int err;
+	struct sk_filter *filter;
 	
 	err = security_sock_rcv_skb(sk, skb);
 	if (err)
 		return err;
 	
-	if (sk->sk_filter) {
-		struct sk_filter *filter;
-		
-		if (needlock)
-			bh_lock_sock(sk);
-		
-		filter = sk->sk_filter;
-		if (filter) {
-			unsigned int pkt_len = sk_run_filter(skb, filter->insns,
-							     filter->len);
-			err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
-		}
-
-		if (needlock)
-			bh_unlock_sock(sk);
+	rcu_read_lock_bh();
+	filter = sk->sk_filter;
+	if (filter) {
+		unsigned int pkt_len = sk_run_filter(skb, filter->insns,
+				filter->len);
+		err = pkt_len ? pskb_trim(skb, pkt_len) : -EPERM;
 	}
+ 	rcu_read_unlock_bh();
+
 	return err;
 }
 
+/**
+ * 	sk_filter_rcu_free: Free a socket filter
+ *	@rcu: rcu_head that contains the sk_filter to free
+ */
+static inline void sk_filter_rcu_free(struct rcu_head *rcu)
+{
+	struct sk_filter *fp = container_of(rcu, struct sk_filter, rcu);
+	kfree(fp);
+}
+
 /**
  *	sk_filter_release: Release a socket filter
  *	@sk: socket
@@ -896,7 +905,7 @@ static inline int sk_filter(struct sock *sk, struct sk_buff *skb, int needlock)
  *
  *	Remove a filter from a socket and release its resources.
  */
- 
+
 static inline void sk_filter_release(struct sock *sk, struct sk_filter *fp)
 {
 	unsigned int size = sk_filter_len(fp);
@@ -904,7 +913,7 @@ static inline void sk_filter_release(struct sock *sk, struct sk_filter *fp)
 	atomic_sub(size, &sk->sk_omem_alloc);
 
 	if (atomic_dec_and_test(&fp->refcnt))
-		kfree(fp);
+		call_rcu_bh(&fp->rcu, sk_filter_rcu_free);
 }
 
 static inline void sk_filter_charge(struct sock *sk, struct sk_filter *fp)
@@ -969,9 +978,23 @@ static inline void sock_graft(struct sock *sk, struct socket *parent)
 	sk->sk_sleep = &parent->wait;
 	parent->sk = sk;
 	sk->sk_socket = parent;
+	security_sock_graft(sk, parent);
 	write_unlock_bh(&sk->sk_callback_lock);
 }
 
+static inline void sock_copy(struct sock *nsk, const struct sock *osk)
+{
+#ifdef CONFIG_SECURITY_NETWORK
+	void *sptr = nsk->sk_security;
+#endif
+
+	memcpy(nsk, osk, osk->sk_prot->obj_size);
+#ifdef CONFIG_SECURITY_NETWORK
+	nsk->sk_security = sptr;
+	security_sk_clone(osk, nsk);
+#endif
+}
+
 extern int sock_i_uid(struct sock *sk);
 extern unsigned long sock_i_ino(struct sock *sk);
 
@@ -1065,7 +1088,7 @@ static inline int skb_copy_to_page(struct sock *sk, char __user *from,
 {
 	if (skb->ip_summed == CHECKSUM_NONE) {
 		int err = 0;
-		unsigned int csum = csum_and_copy_from_user(from,
+		__wsum csum = csum_and_copy_from_user(from,
 						     page_address(page) + off,
 							    copy, 0, &err);
 		if (err)