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Commit 8007b8d6 authored by Sage Weil's avatar Sage Weil
Browse files

libceph: fix handling of immediate socket connect failure 



If the connect() call immediately fails such that sock == NULL, we
still need con_close_socket() to reset our socket state to CLOSED.

Signed-off-by: default avatarSage Weil <sage@inktank.com>
Reviewed-by: default avatarAlex Elder <elder@inktank.com>
parent 09d90327

net/ceph/messenger.c

+19 −7
Original line number Diff line number Diff line
@@ -224,6 +224,8 @@ static void con_sock_state_init(struct ceph_connection *con) 
	old_state = atomic_xchg(&con->sock_state, CON_SOCK_STATE_CLOSED);

	if (WARN_ON(old_state != CON_SOCK_STATE_NEW))

		printk("%s: unexpected old state %d\n", __func__, old_state);

	dout("%s con %p sock %d -> %d\n", __func__, con, old_state,

	     CON_SOCK_STATE_CLOSED);

}



static void con_sock_state_connecting(struct ceph_connection *con)
@@ -233,6 +235,8 @@ static void con_sock_state_connecting(struct ceph_connection *con) 
	old_state = atomic_xchg(&con->sock_state, CON_SOCK_STATE_CONNECTING);

	if (WARN_ON(old_state != CON_SOCK_STATE_CLOSED))

		printk("%s: unexpected old state %d\n", __func__, old_state);

	dout("%s con %p sock %d -> %d\n", __func__, con, old_state,

	     CON_SOCK_STATE_CONNECTING);

}



static void con_sock_state_connected(struct ceph_connection *con)
@@ -242,6 +246,8 @@ static void con_sock_state_connected(struct ceph_connection *con) 
	old_state = atomic_xchg(&con->sock_state, CON_SOCK_STATE_CONNECTED);

	if (WARN_ON(old_state != CON_SOCK_STATE_CONNECTING))

		printk("%s: unexpected old state %d\n", __func__, old_state);

	dout("%s con %p sock %d -> %d\n", __func__, con, old_state,

	     CON_SOCK_STATE_CONNECTED);

}



static void con_sock_state_closing(struct ceph_connection *con)
@@ -253,6 +259,8 @@ static void con_sock_state_closing(struct ceph_connection *con) 
			old_state != CON_SOCK_STATE_CONNECTED &&

			old_state != CON_SOCK_STATE_CLOSING))

		printk("%s: unexpected old state %d\n", __func__, old_state);

	dout("%s con %p sock %d -> %d\n", __func__, con, old_state,

	     CON_SOCK_STATE_CLOSING);

}



static void con_sock_state_closed(struct ceph_connection *con)
@@ -262,8 +270,11 @@ static void con_sock_state_closed(struct ceph_connection *con) 
	old_state = atomic_xchg(&con->sock_state, CON_SOCK_STATE_CLOSED);

	if (WARN_ON(old_state != CON_SOCK_STATE_CONNECTED &&

		    old_state != CON_SOCK_STATE_CLOSING &&

		    old_state != CON_SOCK_STATE_CONNECTING))

		    old_state != CON_SOCK_STATE_CONNECTING &&

		    old_state != CON_SOCK_STATE_CLOSED))

		printk("%s: unexpected old state %d\n", __func__, old_state);

	dout("%s con %p sock %d -> %d\n", __func__, con, old_state,

	     CON_SOCK_STATE_CLOSED);

}



/*
@@ -448,14 +459,14 @@ static int ceph_tcp_sendpage(struct socket *sock, struct page *page, 
 */

static int con_close_socket(struct ceph_connection *con)

{

	int rc;

	int rc = 0;



	dout("con_close_socket on %p sock %p\n", con, con->sock);

	if (!con->sock)

		return 0;

	if (con->sock) {

		rc = con->sock->ops->shutdown(con->sock, SHUT_RDWR);

		sock_release(con->sock);

		con->sock = NULL;

	}



	/*

	 * Forcibly clear the SOCK_CLOSED flag.  It gets set
@@ -464,6 +475,7 @@ static int con_close_socket(struct ceph_connection *con) 
	 * shut the socket down.

	 */

	clear_bit(CON_FLAG_SOCK_CLOSED, &con->flags);



	con_sock_state_closed(con);

	return rc;

}