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SUNRPC: Refactor and simplify connect timeout

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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 <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2023-08-19 17:32:22 -04:00 committed by Anna Schumaker
parent 3a107f0740
commit 3e6ff89d2e
1 changed files with 21 additions and 13 deletions
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34
net/sunrpc/xprtsock.c
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@ -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);
}