[PATCH 14/32] net/tcp: convert to ->poll_mask
From: Christoph Hellwig <hch@lst.de>
Date: 2018-05-15 19:49:36
Also in:
linux-fsdevel, lkml, netdev
Subsystem:
networking [general], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Neal Cardwell, Linus Torvalds
Signed-off-by: Christoph Hellwig <hch@lst.de> --- include/net/tcp.h | 3 +-- net/ipv4/af_inet.c | 2 +- net/ipv4/tcp.c | 23 ++++++----------------- net/ipv6/af_inet6.c | 2 +- 4 files changed, 9 insertions(+), 21 deletions(-)
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 9c9b3768b350..72b0ef0fe8cf 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h@@ -388,8 +388,7 @@ bool tcp_peer_is_proven(struct request_sock *req, struct dst_entry *dst); void tcp_close(struct sock *sk, long timeout); void tcp_init_sock(struct sock *sk); void tcp_init_transfer(struct sock *sk, int bpf_op); -__poll_t tcp_poll(struct file *file, struct socket *sock, - struct poll_table_struct *wait); +__poll_t tcp_poll_mask(struct socket *sock, __poll_t events); int tcp_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen); int tcp_setsockopt(struct sock *sk, int level, int optname,
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index eaed0367e669..116e3cd11515 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,
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 9ce1c726185e..643c1ba27338 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/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 8da0b513f188..57b85ea438e9 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c@@ -571,7 +571,7 @@ const struct proto_ops inet6_stream_ops = { .socketpair = sock_no_socketpair, /* a do nothing */ .accept = inet_accept, /* ok */ .getname = inet6_getname, - .poll = tcp_poll, /* ok */ + .poll_mask = tcp_poll_mask, /* ok */ .ioctl = inet6_ioctl, /* must change */ .listen = inet_listen, /* ok */ .shutdown = inet_shutdown, /* ok */
--
2.17.0
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