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-rw-r--r--include/net/sock.h39
1 files changed, 22 insertions, 17 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index dfeb8b13024..453c79d0915 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -40,6 +40,7 @@
#ifndef _SOCK_H
#define _SOCK_H
+#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/cache.h>
@@ -55,6 +56,7 @@
#include <asm/atomic.h>
#include <net/dst.h>
#include <net/checksum.h>
+#include <net/net_namespace.h>
/*
* This structure really needs to be cleaned up.
@@ -75,10 +77,9 @@
* between user contexts and software interrupt processing, whereas the
* mini-semaphore synchronizes multiple users amongst themselves.
*/
-struct sock_iocb;
typedef struct {
spinlock_t slock;
- struct sock_iocb *owner;
+ int owned;
wait_queue_head_t wq;
/*
* We express the mutex-alike socket_lock semantics
@@ -105,6 +106,7 @@ struct proto;
* @skc_refcnt: reference count
* @skc_hash: hash value used with various protocol lookup tables
* @skc_prot: protocol handlers inside a network family
+ * @skc_net: reference to the network namespace of this socket
*
* This is the minimal network layer representation of sockets, the header
* for struct sock and struct inet_timewait_sock.
@@ -119,6 +121,7 @@ struct sock_common {
atomic_t skc_refcnt;
unsigned int skc_hash;
struct proto *skc_prot;
+ struct net *skc_net;
};
/**
@@ -195,6 +198,7 @@ struct sock {
#define sk_refcnt __sk_common.skc_refcnt
#define sk_hash __sk_common.skc_hash
#define sk_prot __sk_common.skc_prot
+#define sk_net __sk_common.skc_net
unsigned char sk_shutdown : 2,
sk_no_check : 2,
sk_userlocks : 4;
@@ -481,17 +485,17 @@ static inline void sk_add_backlog(struct sock *sk, struct sk_buff *skb)
skb->next = NULL;
}
-#define sk_wait_event(__sk, __timeo, __condition) \
-({ int rc; \
- release_sock(__sk); \
- rc = __condition; \
- if (!rc) { \
- *(__timeo) = schedule_timeout(*(__timeo)); \
- } \
- lock_sock(__sk); \
- rc = __condition; \
- rc; \
-})
+#define sk_wait_event(__sk, __timeo, __condition) \
+ ({ int __rc; \
+ release_sock(__sk); \
+ __rc = __condition; \
+ if (!__rc) { \
+ *(__timeo) = schedule_timeout(*(__timeo)); \
+ } \
+ lock_sock(__sk); \
+ __rc = __condition; \
+ __rc; \
+ })
extern int sk_stream_wait_connect(struct sock *sk, long *timeo_p);
extern int sk_stream_wait_memory(struct sock *sk, long *timeo_p);
@@ -702,7 +706,7 @@ extern int sk_stream_mem_schedule(struct sock *sk, int size, int kind);
static inline int sk_stream_pages(int amt)
{
- return (amt + SK_STREAM_MEM_QUANTUM - 1) / SK_STREAM_MEM_QUANTUM;
+ return DIV_ROUND_UP(amt, SK_STREAM_MEM_QUANTUM);
}
static inline void sk_stream_mem_reclaim(struct sock *sk)
@@ -736,7 +740,7 @@ static inline int sk_stream_wmem_schedule(struct sock *sk, int size)
* Since ~2.3.5 it is also exclusive sleep lock serializing
* accesses from user process context.
*/
-#define sock_owned_by_user(sk) ((sk)->sk_lock.owner)
+#define sock_owned_by_user(sk) ((sk)->sk_lock.owned)
/*
* Macro so as to not evaluate some arguments when
@@ -747,7 +751,7 @@ static inline int sk_stream_wmem_schedule(struct sock *sk, int size)
*/
#define sock_lock_init_class_and_name(sk, sname, skey, name, key) \
do { \
- sk->sk_lock.owner = NULL; \
+ sk->sk_lock.owned = 0; \
init_waitqueue_head(&sk->sk_lock.wq); \
spin_lock_init(&(sk)->sk_lock.slock); \
debug_check_no_locks_freed((void *)&(sk)->sk_lock, \
@@ -773,7 +777,7 @@ extern void FASTCALL(release_sock(struct sock *sk));
SINGLE_DEPTH_NESTING)
#define bh_unlock_sock(__sk) spin_unlock(&((__sk)->sk_lock.slock))
-extern struct sock *sk_alloc(int family,
+extern struct sock *sk_alloc(struct net *net, int family,
gfp_t priority,
struct proto *prot, int zero_it);
extern void sk_free(struct sock *sk);
@@ -1002,6 +1006,7 @@ static inline void sock_copy(struct sock *nsk, const struct sock *osk)
#endif
memcpy(nsk, osk, osk->sk_prot->obj_size);
+ get_net(nsk->sk_net);
#ifdef CONFIG_SECURITY_NETWORK
nsk->sk_security = sptr;
security_sk_clone(osk, nsk);