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linux/drivers/scsi/bnx2i/57xx_iscsi_constants.h
Michael Chan fdf24086f4 cnic: Defer iscsi connection cleanup 
The bnx2x devices require a 2 second quiet time before sending the last
RAMROD command to destroy a connection.  This sleep wait adds up to a
long delay when iscsid is serially destroying maultiple connections.

Create a workqueue to perform the final connection cleanup in the
background to speed up the process.  This significantly speeds up the
process as the wait time can be done in parallel for multiple connections.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-14 10:45:54 -07:00

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/* 57xx_iscsi_constants.h: Broadcom NetXtreme II iSCSI HSI
*
* Copyright (c) 2006 - 2009 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*
* Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
*/
#ifndef __57XX_ISCSI_CONSTANTS_H_
#define __57XX_ISCSI_CONSTANTS_H_
/**
* This file defines HSI constants for the iSCSI flows
*/
/* iSCSI request op codes */
#define ISCSI_OPCODE_CLEANUP_REQUEST (7)
/* iSCSI response/messages op codes */
#define ISCSI_OPCODE_CLEANUP_RESPONSE (0x27)
#define ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION (0)
/* iSCSI task types */
#define ISCSI_TASK_TYPE_READ (0)
#define ISCSI_TASK_TYPE_WRITE (1)
#define ISCSI_TASK_TYPE_MPATH (2)
/* initial CQ sequence numbers */
#define ISCSI_INITIAL_SN (1)
/* KWQ (kernel work queue) layer codes */
#define ISCSI_KWQE_LAYER_CODE (6)
/* KWQ (kernel work queue) request op codes */
#define ISCSI_KWQE_OPCODE_OFFLOAD_CONN1 (0)
#define ISCSI_KWQE_OPCODE_OFFLOAD_CONN2 (1)
#define ISCSI_KWQE_OPCODE_UPDATE_CONN (2)
#define ISCSI_KWQE_OPCODE_DESTROY_CONN (3)
#define ISCSI_KWQE_OPCODE_INIT1 (4)
#define ISCSI_KWQE_OPCODE_INIT2 (5)
/* KCQ (kernel completion queue) response op codes */
#define ISCSI_KCQE_OPCODE_OFFLOAD_CONN (0x10)
#define ISCSI_KCQE_OPCODE_UPDATE_CONN (0x12)
#define ISCSI_KCQE_OPCODE_DESTROY_CONN (0x13)
#define ISCSI_KCQE_OPCODE_INIT (0x14)
#define ISCSI_KCQE_OPCODE_FW_CLEAN_TASK (0x15)
#define ISCSI_KCQE_OPCODE_TCP_RESET (0x16)
#define ISCSI_KCQE_OPCODE_TCP_SYN (0x17)
#define ISCSI_KCQE_OPCODE_TCP_FIN (0X18)
#define ISCSI_KCQE_OPCODE_TCP_ERROR (0x19)
#define ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION (0x20)
#define ISCSI_KCQE_OPCODE_ISCSI_ERROR (0x21)
/* KCQ (kernel completion queue) completion status */
#define ISCSI_KCQE_COMPLETION_STATUS_SUCCESS (0x0)
#define ISCSI_KCQE_COMPLETION_STATUS_INVALID_OPCODE (0x1)
#define ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE (0x2)
#define ISCSI_KCQE_COMPLETION_STATUS_CTX_FREE_FAILURE (0x3)
#define ISCSI_KCQE_COMPLETION_STATUS_NIC_ERROR (0x4)
#define ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR (0x5)
#define ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR (0x6)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_UNEXPECTED_OPCODE (0xa)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE (0xb)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN (0xc)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT (0xd)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN (0xe)
/* Response */
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN (0xf)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T (0x10)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_IS_ZERO (0x2c)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_TOO_BIG (0x2d)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0 (0x11)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1 (0x12)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2 (0x13)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3 (0x14)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4 (0x15)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5 (0x16)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6 (0x17)
/* Data-In */
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN (0x18)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN (0x19)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO (0x1a)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV (0x1b)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN (0x1c)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN (0x1d)
/* R2T */
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF (0x1f)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN (0x20)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN (0x21)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 (0x22)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 (0x23)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED (0x24)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV (0x25)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN (0x26)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO (0x27)
/* TMF */
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN (0x28)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN (0x29)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN (0x2a)
#define ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP (0x2b)
/* IP/TCP processing errors: */
#define ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT (0x40)
#define ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS (0x41)
#define ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG (0x42)
#define ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_MAX_RTRANS (0x43)
/* iSCSI licensing errors */
/* general iSCSI license not installed */
#define ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED (0x50)
/* additional LOM specific iSCSI license not installed */
#define ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED (0x51)
#define ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY (0x80)
/* SQ/RQ/CQ DB structure sizes */
#define ISCSI_SQ_DB_SIZE (16)
#define ISCSI_RQ_DB_SIZE (16)
#define ISCSI_CQ_DB_SIZE (80)
#define ISCSI_SQN_TO_NOTIFY_NOT_VALID 0xFFFF
/* Page size codes (for flags field in connection offload request) */
#define ISCSI_PAGE_SIZE_256 (0)
#define ISCSI_PAGE_SIZE_512 (1)
#define ISCSI_PAGE_SIZE_1K (2)
#define ISCSI_PAGE_SIZE_2K (3)
#define ISCSI_PAGE_SIZE_4K (4)
#define ISCSI_PAGE_SIZE_8K (5)
#define ISCSI_PAGE_SIZE_16K (6)
#define ISCSI_PAGE_SIZE_32K (7)
#define ISCSI_PAGE_SIZE_64K (8)
#define ISCSI_PAGE_SIZE_128K (9)
#define ISCSI_PAGE_SIZE_256K (10)
#define ISCSI_PAGE_SIZE_512K (11)
#define ISCSI_PAGE_SIZE_1M (12)
#define ISCSI_PAGE_SIZE_2M (13)
#define ISCSI_PAGE_SIZE_4M (14)
#define ISCSI_PAGE_SIZE_8M (15)
/* Iscsi PDU related defines */
#define ISCSI_HEADER_SIZE (48)
#define ISCSI_DIGEST_SHIFT (2)
#define ISCSI_DIGEST_SIZE (4)
#define B577XX_ISCSI_CONNECTION_TYPE 3
#endif /*__57XX_ISCSI_CONSTANTS_H_ */
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