diff options
| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2023-08-20 00:32:21 +0300 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2023-08-24 20:24:15 +0300 |
| commit | 3a107f07403aa3bf0d604996a30922812e30f8a9 (patch) | |
| tree | 09141b0d4c69e35d0149ac830ba9f71382b55aaf /net/sunrpc | |
| parent | 88975a55969e11f26fe3846bf4fbf8e7dc8cbbd4 (diff) | |
| download | linux-3a107f07403aa3bf0d604996a30922812e30f8a9.tar.xz | |
SUNRPC: Set the TCP_SYNCNT to match the socket timeout
Set the TCP SYN count so that we abort the connection attempt at around
the expected timeout value.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/xprtsock.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 9f010369100a..47d0b6a8c32e 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -2230,9 +2230,13 @@ static void xs_tcp_set_socket_timeouts(struct rpc_xprt *xprt, struct socket *sock) { struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt); + struct net *net = sock_net(sock->sk); + unsigned long connect_timeout; + unsigned long syn_retries; unsigned int keepidle; unsigned int keepcnt; unsigned int timeo; + unsigned long t; spin_lock(&xprt->transport_lock); keepidle = DIV_ROUND_UP(xprt->timeout->to_initval, HZ); @@ -2250,6 +2254,16 @@ static void xs_tcp_set_socket_timeouts(struct rpc_xprt *xprt, /* TCP user timeout (see RFC5482) */ tcp_sock_set_user_timeout(sock->sk, timeo); + + /* Connect timeout */ + connect_timeout = max_t(unsigned long, + DIV_ROUND_UP(xprt->connect_timeout, HZ), 1); + syn_retries = max_t(unsigned long, + READ_ONCE(net->ipv4.sysctl_tcp_syn_retries), 1); + for (t = 0; t <= syn_retries && (1UL << t) < connect_timeout; t++) + ; + if (t <= syn_retries) + tcp_sock_set_syncnt(sock->sk, t - 1); } static void xs_tcp_set_connect_timeout(struct rpc_xprt *xprt, |