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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: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
This commit is contained in:
Sage Weil 2012-07-30 18:16:16 -07:00
parent 09d9032751
commit 8007b8d626
1 changed files with 19 additions and 7 deletions
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26
net/ceph/messenger.c
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@ -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;
rc = con->sock->ops->shutdown(con->sock, SHUT_RDWR);
sock_release(con->sock);
con->sock = NULL;
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;
}