diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/af_inet.c | 8 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 23 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 10 |
3 files changed, 15 insertions, 26 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index eaed0367e669..8a59428e63ab 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -986,7 +986,7 @@ const struct proto_ops inet_stream_ops = { .socketpair = sock_no_socketpair, .accept = inet_accept, .getname = inet_getname, - .poll = tcp_poll, + .poll_mask = tcp_poll_mask, .ioctl = inet_ioctl, .listen = inet_listen, .shutdown = inet_shutdown, @@ -1018,7 +1018,7 @@ const struct proto_ops inet_dgram_ops = { .socketpair = sock_no_socketpair, .accept = sock_no_accept, .getname = inet_getname, - .poll = udp_poll, + .poll_mask = udp_poll_mask, .ioctl = inet_ioctl, .listen = sock_no_listen, .shutdown = inet_shutdown, @@ -1039,7 +1039,7 @@ EXPORT_SYMBOL(inet_dgram_ops); /* * For SOCK_RAW sockets; should be the same as inet_dgram_ops but without - * udp_poll + * udp_poll_mask */ static const struct proto_ops inet_sockraw_ops = { .family = PF_INET, @@ -1050,7 +1050,7 @@ static const struct proto_ops inet_sockraw_ops = { .socketpair = sock_no_socketpair, .accept = sock_no_accept, .getname = inet_getname, - .poll = datagram_poll, + .poll_mask = datagram_poll_mask, .ioctl = inet_ioctl, .listen = sock_no_listen, .shutdown = inet_shutdown, diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index c9d00ef54dec..dec47e6789e7 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -494,32 +494,21 @@ static inline bool tcp_stream_is_readable(const struct tcp_sock *tp, } /* - * Wait for a TCP event. - * - * Note that we don't need to lock the socket, as the upper poll layers - * take care of normal races (between the test and the event) and we don't - * go look at any of the socket buffers directly. + * Socket is not locked. We are protected from async events by poll logic and + * correct handling of state changes made by other threads is impossible in + * any case. */ -__poll_t tcp_poll(struct file *file, struct socket *sock, poll_table *wait) +__poll_t tcp_poll_mask(struct socket *sock, __poll_t events) { - __poll_t mask; struct sock *sk = sock->sk; const struct tcp_sock *tp = tcp_sk(sk); + __poll_t mask = 0; int state; - sock_poll_wait(file, sk_sleep(sk), wait); - state = inet_sk_state_load(sk); if (state == TCP_LISTEN) return inet_csk_listen_poll(sk); - /* Socket is not locked. We are protected from async events - * by poll logic and correct handling of state changes - * made by other threads is impossible in any case. - */ - - mask = 0; - /* * EPOLLHUP is certainly not done right. But poll() doesn't * have a notion of HUP in just one direction, and for a @@ -600,7 +589,7 @@ __poll_t tcp_poll(struct file *file, struct socket *sock, poll_table *wait) return mask; } -EXPORT_SYMBOL(tcp_poll); +EXPORT_SYMBOL(tcp_poll_mask); int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg) { diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 051a43ff3fb8..675433eb53a8 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -2501,7 +2501,7 @@ int compat_udp_getsockopt(struct sock *sk, int level, int optname, * udp_poll - wait for a UDP event. * @file - file struct * @sock - socket - * @wait - poll table + * @events - events to wait for * * This is same as datagram poll, except for the special case of * blocking sockets. If application is using a blocking fd @@ -2510,23 +2510,23 @@ int compat_udp_getsockopt(struct sock *sk, int level, int optname, * but then block when reading it. Add special case code * to work around these arguably broken applications. */ -__poll_t udp_poll(struct file *file, struct socket *sock, poll_table *wait) +__poll_t udp_poll_mask(struct socket *sock, __poll_t events) { - __poll_t mask = datagram_poll(file, sock, wait); + __poll_t mask = datagram_poll_mask(sock, events); struct sock *sk = sock->sk; if (!skb_queue_empty(&udp_sk(sk)->reader_queue)) mask |= EPOLLIN | EPOLLRDNORM; /* Check for false positives due to checksum errors */ - if ((mask & EPOLLRDNORM) && !(file->f_flags & O_NONBLOCK) && + if ((mask & EPOLLRDNORM) && !(sock->file->f_flags & O_NONBLOCK) && !(sk->sk_shutdown & RCV_SHUTDOWN) && first_packet_length(sk) == -1) mask &= ~(EPOLLIN | EPOLLRDNORM); return mask; } -EXPORT_SYMBOL(udp_poll); +EXPORT_SYMBOL(udp_poll_mask); int udp_abort(struct sock *sk, int err) { |