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Subject[PATCH 14/32] net/tcp: convert to ->poll_mask
Date
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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