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| author | Mike Christie <michaelc@cs.wisc.edu> | 2005-09-12 21:02:04 -0500 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2005-09-20 12:36:02 -0500 |
| commit | 9974487824570e7ac388390333ef5c4ca3ebc2da (patch) | |
| tree | ba90b6074ce9db97384f8b9f465ebdca3e7df6a4 /drivers/scsi | |
| parent | fa0a6957aa7d02addb08a231c8e7c77c2b8fcd20 (diff) | |
| download | linux-9974487824570e7ac388390333ef5c4ca3ebc2da.tar.gz linux-9974487824570e7ac388390333ef5c4ca3ebc2da.tar.bz2 linux-9974487824570e7ac388390333ef5c4ca3ebc2da.zip | |
[SCSI] iscsi: fix nop-in handling
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>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/iscsi_tcp.c | 82 |
1 files changed, 47 insertions, 35 deletions
diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 13411ca3d648..1d27caf3abe8 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -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; |