From 3e6ff89d2e4b605d7064686e6d8991b6f780df3f Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 19 Aug 2023 17:32:22 -0400 Subject: [PATCH] SUNRPC: Refactor and simplify connect timeout Instead of requiring the requests to redrive the connection several times, just let the TCP connect code manage it now that we've adjusted the TCP_SYNCNT value. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- net/sunrpc/xprtsock.c | 34 +++++++++++++++++++++------------- 1 file changed, 21 insertions(+), 13 deletions(-) diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 47d0b6a8c32e..e558f0024fe5 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -2266,6 +2266,25 @@ static void xs_tcp_set_socket_timeouts(struct rpc_xprt *xprt, tcp_sock_set_syncnt(sock->sk, t - 1); } +static void xs_tcp_do_set_connect_timeout(struct rpc_xprt *xprt, + unsigned long connect_timeout) +{ + struct sock_xprt *transport = + container_of(xprt, struct sock_xprt, xprt); + struct rpc_timeout to; + unsigned long initval; + + memcpy(&to, xprt->timeout, sizeof(to)); + /* Arbitrary lower limit */ + initval = max_t(unsigned long, connect_timeout, XS_TCP_INIT_REEST_TO); + to.to_initval = initval; + to.to_maxval = initval; + to.to_retries = 0; + memcpy(&transport->tcp_timeout, &to, sizeof(transport->tcp_timeout)); + xprt->timeout = &transport->tcp_timeout; + xprt->connect_timeout = connect_timeout; +} + static void xs_tcp_set_connect_timeout(struct rpc_xprt *xprt, unsigned long connect_timeout, unsigned long reconnect_timeout) @@ -2277,19 +2296,8 @@ static void xs_tcp_set_connect_timeout(struct rpc_xprt *xprt, spin_lock(&xprt->transport_lock); if (reconnect_timeout < xprt->max_reconnect_timeout) xprt->max_reconnect_timeout = reconnect_timeout; - if (connect_timeout < xprt->connect_timeout) { - memcpy(&to, xprt->timeout, sizeof(to)); - initval = DIV_ROUND_UP(connect_timeout, to.to_retries + 1); - /* Arbitrary lower limit */ - if (initval < XS_TCP_INIT_REEST_TO << 1) - initval = XS_TCP_INIT_REEST_TO << 1; - to.to_initval = initval; - to.to_maxval = initval; - memcpy(&transport->tcp_timeout, &to, - sizeof(transport->tcp_timeout)); - xprt->timeout = &transport->tcp_timeout; - xprt->connect_timeout = connect_timeout; - } + if (connect_timeout < xprt->connect_timeout) + xs_tcp_do_set_connect_timeout(xprt, connect_timeout); set_bit(XPRT_SOCK_UPD_TIMEOUT, &transport->sock_state); spin_unlock(&xprt->transport_lock); }