Commit c712495e authored by Chris Leech's avatar Chris Leech Committed by James Bottomley

[SCSI] iscsi_tcp: consider session state in iscsi_sw_sk_state_check

It seems some iSCSI targets (including the Linux kernel target) close
the TCP connection from the target side immediately after processing a
session logout.

When a TCP FIN comes in right after the iSCSI logout response,
iscsi_sw_sk_state_check sees the local socket as not yet being in
CLOSE_WAIT or CLOSE and logs an error.  But the initiator would close
the connection right after processing the logout response anyway, and
the error is confusing to admins who just requested that the session be
shut down.

This adds a check of the session state, and suppresses the error if we
are in the process of logging out.
Signed-off-by: default avatarChris Leech <cleech@redhat.com>
Reviewed-by: default avatarMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 95897910
......@@ -116,6 +116,7 @@ static inline int iscsi_sw_sk_state_check(struct sock *sk)
struct iscsi_conn *conn = sk->sk_user_data;
if ((sk->sk_state == TCP_CLOSE_WAIT || sk->sk_state == TCP_CLOSE) &&
(conn->session->state != ISCSI_STATE_LOGGING_OUT) &&
!atomic_read(&sk->sk_rmem_alloc)) {
ISCSI_SW_TCP_DBG(conn, "TCP_CLOSE|TCP_CLOSE_WAIT\n");
iscsi_conn_failure(conn, ISCSI_ERR_TCP_CONN_CLOSE);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment