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[SCSI] iscsi: fix nop-in handling

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From: zhenyu.z.wang@intel.com

This add check to NOOP_IN's ttt, when it's ~0UL we should not send
NOOP_OUT by spec (plus some cleanup).

Signed-off-by: Alex Aizman <itn780@yahoo.com>
Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Mike Christie 2005-09-12 21:02:04 -05:00 committed by James Bottomley
parent fa0a6957aa
commit 9974487824
1 changed files with 47 additions and 35 deletions
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82
drivers/scsi/iscsi_tcp.c
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@ -672,34 +672,6 @@ iscsi_hdr_recv(struct iscsi_conn *conn)
else
rc = ISCSI_ERR_PROTO;
break;
case ISCSI_OP_NOOP_IN:
case ISCSI_OP_TEXT_RSP:
case ISCSI_OP_LOGOUT_RSP:
case ISCSI_OP_ASYNC_EVENT:
case ISCSI_OP_REJECT:
rc = iscsi_check_assign_cmdsn(session,
(struct iscsi_nopin*)hdr);
if (rc)
break;
/* update ExpStatSN */
conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1;
if (!conn->in.datalen) {
struct iscsi_mgmt_task *mtask;
rc = iscsi_recv_pdu(iscsi_handle(conn), hdr,
NULL, 0);
mtask = (struct iscsi_mgmt_task *)
session->mgmt_cmds[conn->in.itt -
ISCSI_MGMT_ITT_OFFSET];
if (conn->login_mtask != mtask) {
spin_lock(&session->lock);
__kfifo_put(session->mgmtpool.queue,
(void*)&mtask, sizeof(void*));
spin_unlock(&session->lock);
}
}
break;
default:
rc = ISCSI_ERR_BAD_OPCODE;
break;
@ -718,6 +690,7 @@ iscsi_hdr_recv(struct iscsi_conn *conn)
switch(conn->in.opcode) {
case ISCSI_OP_LOGIN_RSP:
case ISCSI_OP_TEXT_RSP:
case ISCSI_OP_LOGOUT_RSP:
rc = iscsi_check_assign_cmdsn(session,
(struct iscsi_nopin*)hdr);
if (rc)
@ -758,20 +731,59 @@ iscsi_hdr_recv(struct iscsi_conn *conn)
}
spin_unlock(&session->lock);
break;
case ISCSI_OP_NOOP_IN:
if (hdr->ttt != ISCSI_RESERVED_TAG) {
rc = ISCSI_ERR_PROTO;
break;
}
rc = iscsi_check_assign_cmdsn(session,
(struct iscsi_nopin*)hdr);
if (rc)
break;
conn->exp_statsn = be32_to_cpu(hdr->statsn) + 1;
if (!conn->in.datalen) {
struct iscsi_mgmt_task *mtask;
rc = iscsi_recv_pdu(iscsi_handle(conn), hdr,
NULL, 0);
mtask = (struct iscsi_mgmt_task *)
session->mgmt_cmds[conn->in.itt -
ISCSI_MGMT_ITT_OFFSET];
if (conn->login_mtask != mtask) {
spin_lock(&session->lock);
__kfifo_put(session->mgmtpool.queue,
(void*)&mtask, sizeof(void*));
spin_unlock(&session->lock);
}
}
break;
default:
rc = ISCSI_ERR_BAD_OPCODE;
break;
}
} else if (conn->in.itt == ISCSI_RESERVED_TAG) {
if (conn->in.opcode == ISCSI_OP_NOOP_IN && !conn->in.datalen) {
rc = iscsi_check_assign_cmdsn(session,
switch(conn->in.opcode) {
case ISCSI_OP_NOOP_IN:
if (!conn->in.datalen) {
rc = iscsi_check_assign_cmdsn(session,
(struct iscsi_nopin*)hdr);
if (!rc)
rc = iscsi_recv_pdu(iscsi_handle(conn),
hdr, NULL, 0);
}
else
if (!rc && hdr->ttt != ISCSI_RESERVED_TAG)
rc = iscsi_recv_pdu(iscsi_handle(conn),
hdr, NULL, 0);
} else
rc = ISCSI_ERR_PROTO;
break;
case ISCSI_OP_REJECT:
/* we need sth like iscsi_reject_rsp()*/
case ISCSI_OP_ASYNC_EVENT:
/* we need sth like iscsi_async_event_rsp() */
rc = ISCSI_ERR_BAD_OPCODE;
break;
default:
rc = ISCSI_ERR_BAD_OPCODE;
break;
}
} else
rc = ISCSI_ERR_BAD_ITT;