From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.133]:42738 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752654AbeC3Pd2 (ORCPT ); Fri, 30 Mar 2018 11:33:28 -0400 From: Christoph Hellwig To: viro@zeniv.linux.org.uk Cc: Avi Kivity , linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, netdev@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 14/32] net/tcp: convert to ->poll_mask Date: Fri, 30 Mar 2018 17:07:51 +0200 Message-Id: <20180330150809.28094-15-hch@lst.de> In-Reply-To: <20180330150809.28094-1-hch@lst.de> References: <20180330150809.28094-1-hch@lst.de> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Signed-off-by: Christoph Hellwig --- include/net/tcp.h | 4 ++-- net/ipv4/af_inet.c | 3 ++- net/ipv4/tcp.c | 31 ++++++++++++++----------------- net/ipv6/af_inet6.c | 3 ++- 4 files changed, 20 insertions(+), 21 deletions(-) diff --git a/include/net/tcp.h b/include/net/tcp.h index e3fc667f9ac2..fb52f93d556c 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -387,8 +387,8 @@ 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); +struct wait_queue_head *tcp_get_poll_head(struct socket *sock, __poll_t events); +__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 e4329e161943..ec32cc263b18 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -952,7 +952,8 @@ const struct proto_ops inet_stream_ops = { .socketpair = sock_no_socketpair, .accept = inet_accept, .getname = inet_getname, - .poll = tcp_poll, + .get_poll_head = tcp_get_poll_head, + .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 48636aee23c3..ad8e281066a0 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -484,33 +484,30 @@ static void tcp_tx_timestamp(struct sock *sk, u16 tsflags) } } +struct wait_queue_head *tcp_get_poll_head(struct socket *sock, __poll_t events) +{ + sock_poll_busy_loop(sock, events); + sock_rps_record_flow(sock->sk); + return sk_sleep(sock->sk); +} +EXPORT_SYMBOL(tcp_get_poll_head); + /* - * 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 @@ -591,7 +588,7 @@ __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 416917719a6f..c470549d6ef9 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -547,7 +547,8 @@ 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 */ + .get_poll_head = tcp_get_poll_head, + .poll_mask = tcp_poll_mask, /* ok */ .ioctl = inet6_ioctl, /* must change */ .listen = inet_listen, /* ok */ .shutdown = inet_shutdown, /* ok */ -- 2.14.2