diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-05-28 07:12:25 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-28 11:11:45 -0700 |
| commit | 480aeb9639d6a077c611b303a22f9b1e5937d081 (patch) | |
| tree | 923c33a2592c8822ab15abc0929df23adda27a9f /net/rds | |
| parent | d41ecaac903c9f4658a71d4e7a708673cfb5abba (diff) | |
| download | linux-480aeb9639d6a077c611b303a22f9b1e5937d081.tar.bz2 | |
tcp: add tcp_sock_set_keepcnt
Add a helper to directly set the TCP_KEEPCNT sockopt from kernel space
without going through a fake uaccess.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds')
| -rw-r--r-- | net/rds/tcp.h | 2 | ||||
| -rw-r--r-- | net/rds/tcp_listen.c | 17 |
2 files changed, 4 insertions, 15 deletions
diff --git a/net/rds/tcp.h b/net/rds/tcp.h index f6d75d8cb167..bad9cf49d565 100644 --- a/net/rds/tcp.h +++ b/net/rds/tcp.h @@ -70,7 +70,7 @@ struct socket *rds_tcp_listen_init(struct net *net, bool isv6); void rds_tcp_listen_stop(struct socket *sock, struct work_struct *acceptor); void rds_tcp_listen_data_ready(struct sock *sk); int rds_tcp_accept_one(struct socket *sock); -int rds_tcp_keepalive(struct socket *sock); +void rds_tcp_keepalive(struct socket *sock); void *rds_tcp_listen_sock_def_readable(struct net *net); /* tcp_recv.c */ diff --git a/net/rds/tcp_listen.c b/net/rds/tcp_listen.c index 9ad555c48d15..101cf14215a0 100644 --- a/net/rds/tcp_listen.c +++ b/net/rds/tcp_listen.c @@ -38,27 +38,19 @@ #include "rds.h" #include "tcp.h" -int rds_tcp_keepalive(struct socket *sock) +void rds_tcp_keepalive(struct socket *sock) { /* values below based on xs_udp_default_timeout */ int keepidle = 5; /* send a probe 'keepidle' secs after last data */ int keepcnt = 5; /* number of unack'ed probes before declaring dead */ - int ret = 0; sock_set_keepalive(sock->sk); - - ret = kernel_setsockopt(sock, IPPROTO_TCP, TCP_KEEPCNT, - (char *)&keepcnt, sizeof(keepcnt)); - if (ret < 0) - goto bail; - + tcp_sock_set_keepcnt(sock->sk, keepcnt); tcp_sock_set_keepidle(sock->sk, keepidle); /* KEEPINTVL is the interval between successive probes. We follow * the model in xs_tcp_finish_connecting() and re-use keepidle. */ tcp_sock_set_keepintvl(sock->sk, keepidle); -bail: - return ret; } /* rds_tcp_accept_one_path(): if accepting on cp_index > 0, make sure the @@ -140,10 +132,7 @@ int rds_tcp_accept_one(struct socket *sock) new_sock->ops = sock->ops; __module_get(new_sock->ops->owner); - ret = rds_tcp_keepalive(new_sock); - if (ret < 0) - goto out; - + rds_tcp_keepalive(new_sock); rds_tcp_tune(new_sock); inet = inet_sk(new_sock->sk); |