diff options
| -rw-r--r-- | include/net/sock.h | 91 | ||||
| -rw-r--r-- | net/core/sock.c | 93 |
2 files changed, 97 insertions, 87 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 2aa73c0..af2b054 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -938,28 +938,7 @@ static inline void sock_put(struct sock *sk) sk_free(sk); } -static inline int sk_receive_skb(struct sock *sk, struct sk_buff *skb) -{ - int rc = NET_RX_SUCCESS; - - if (sk_filter(sk, skb, 0)) - goto discard_and_relse; - - skb->dev = NULL; - - bh_lock_sock(sk); - if (!sock_owned_by_user(sk)) - rc = sk->sk_backlog_rcv(sk, skb); - else - sk_add_backlog(sk, skb); - bh_unlock_sock(sk); -out: - sock_put(sk); - return rc; -discard_and_relse: - kfree_skb(skb); - goto out; -} +extern int sk_receive_skb(struct sock *sk, struct sk_buff *skb); /* Detach socket from process context. * Announce socket dead, detach it from wait queue and inode. @@ -1044,33 +1023,9 @@ sk_dst_reset(struct sock *sk) write_unlock(&sk->sk_dst_lock); } -static inline struct dst_entry * -__sk_dst_check(struct sock *sk, u32 cookie) -{ - struct dst_entry *dst = sk->sk_dst_cache; - - if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) { - sk->sk_dst_cache = NULL; - dst_release(dst); - return NULL; - } - - return dst; -} - -static inline struct dst_entry * -sk_dst_check(struct sock *sk, u32 cookie) -{ - struct dst_entry *dst = sk_dst_get(sk); +extern struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie); - if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) { - sk_dst_reset(sk); - dst_release(dst); - return NULL; - } - - return dst; -} +extern struct dst_entry *sk_dst_check(struct sock *sk, u32 cookie); static inline void sk_setup_caps(struct sock *sk, struct dst_entry *dst) { @@ -1140,45 +1095,7 @@ extern void sk_reset_timer(struct sock *sk, struct timer_list* timer, extern void sk_stop_timer(struct sock *sk, struct timer_list* timer); -static inline int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) -{ - int err = 0; - int skb_len; - - /* Cast skb->rcvbuf to unsigned... It's pointless, but reduces - number of warnings when compiling with -W --ANK - */ - if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >= - (unsigned)sk->sk_rcvbuf) { - err = -ENOMEM; - goto out; - } - - /* It would be deadlock, if sock_queue_rcv_skb is used - with socket lock! We assume that users of this - function are lock free. - */ - err = sk_filter(sk, skb, 1); - if (err) - goto out; - - skb->dev = NULL; - skb_set_owner_r(skb, sk); - - /* Cache the SKB length before we tack it onto the receive - * queue. Once it is added it no longer belongs to us and - * may be freed by other threads of control pulling packets - * from the queue. - */ - skb_len = skb->len; - - skb_queue_tail(&sk->sk_receive_queue, skb); - - if (!sock_flag(sk, SOCK_DEAD)) - sk->sk_data_ready(sk, skb_len); -out: - return err; -} +extern int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); static inline int sock_queue_err_skb(struct sock *sk, struct sk_buff *skb) { diff --git a/net/core/sock.c b/net/core/sock.c index e110b90..a96ea7d 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -187,6 +187,99 @@ static void sock_disable_timestamp(struct sock *sk) } +int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) +{ + int err = 0; + int skb_len; + + /* Cast skb->rcvbuf to unsigned... It's pointless, but reduces + number of warnings when compiling with -W --ANK + */ + if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >= + (unsigned)sk->sk_rcvbuf) { + err = -ENOMEM; + goto out; + } + + /* It would be deadlock, if sock_queue_rcv_skb is used + with socket lock! We assume that users of this + function are lock free. + */ + err = sk_filter(sk, skb, 1); + if (err) + goto out; + + skb->dev = NULL; + skb_set_owner_r(skb, sk); + + /* Cache the SKB length before we tack it onto the receive + * queue. Once it is added it no longer belongs to us and + * may be freed by other threads of control pulling packets + * from the queue. + */ + skb_len = skb->len; + + skb_queue_tail(&sk->sk_receive_queue, skb); + + if (!sock_flag(sk, SOCK_DEAD)) + sk->sk_data_ready(sk, skb_len); +out: + return err; +} +EXPORT_SYMBOL(sock_queue_rcv_skb); + +int sk_receive_skb(struct sock *sk, struct sk_buff *skb) +{ + int rc = NET_RX_SUCCESS; + + if (sk_filter(sk, skb, 0)) + goto discard_and_relse; + + skb->dev = NULL; + + bh_lock_sock(sk); + if (!sock_owned_by_user(sk)) + rc = sk->sk_backlog_rcv(sk, skb); + else + sk_add_backlog(sk, skb); + bh_unlock_sock(sk); +out: + sock_put(sk); + return rc; +discard_and_relse: + kfree_skb(skb); + goto out; +} +EXPORT_SYMBOL(sk_receive_skb); + +struct dst_entry *__sk_dst_check(struct sock *sk, u32 cookie) +{ + struct dst_entry *dst = sk->sk_dst_cache; + + if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) { + sk->sk_dst_cache = NULL; + dst_release(dst); + return NULL; + } + + return dst; +} +EXPORT_SYMBOL(__sk_dst_check); + +struct dst_entry *sk_dst_check(struct sock *sk, u32 cookie) +{ + struct dst_entry *dst = sk_dst_get(sk); + + if (dst && dst->obsolete && dst->ops->check(dst, cookie) == NULL) { + sk_dst_reset(sk); + dst_release(dst); + return NULL; + } + + return dst; +} +EXPORT_SYMBOL(sk_dst_check); + /* * This is meant for all protocols to use and covers goings on * at the socket level. Everything here is generic. |
