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alistair23-linux/include/uapi/scsi/fc/fc_fs.h
Greg Kroah-Hartman e2be04c7f9 License cleanup: add SPDX license identifier to uapi header files with a license 
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be.  This makes it hard for
compliance tools to determine the correct license.

Update these files with an SPDX license identifier.  The identifier was
chosen based on the license information in the file.

GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:

   NOTE! This copyright does *not* cover user programs that use kernel
   services by normal system calls - this is merely considered normal use
   of the kernel, and does *not* fall under the heading of "derived work".

This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.

Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier.  The format
is:
        ((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)

SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text.  The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.  See the previous patch in this series for the
methodology of how this patch was researched.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:20:11 +01:00

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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* Copyright(c) 2007 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* Maintained at www.Open-FCoE.org
*/
#ifndef _FC_FS_H_
#define _FC_FS_H_
#include <linux/types.h>
/*
* Fibre Channel Framing and Signalling definitions.
* From T11 FC-FS-2 Rev 0.90 - 9 August 2005.
*/
/*
* Frame header
*/
struct fc_frame_header {
__u8 fh_r_ctl; /* routing control */
__u8 fh_d_id[3]; /* Destination ID */
__u8 fh_cs_ctl; /* class of service control / pri */
__u8 fh_s_id[3]; /* Source ID */
__u8 fh_type; /* see enum fc_fh_type below */
__u8 fh_f_ctl[3]; /* frame control */
__u8 fh_seq_id; /* sequence ID */
__u8 fh_df_ctl; /* data field control */
__be16 fh_seq_cnt; /* sequence count */
__be16 fh_ox_id; /* originator exchange ID */
__be16 fh_rx_id; /* responder exchange ID */
__be32 fh_parm_offset; /* parameter or relative offset */
};
#define FC_FRAME_HEADER_LEN 24 /* expected length of structure */
#define FC_MAX_PAYLOAD 2112U /* max payload length in bytes */
#define FC_MIN_MAX_PAYLOAD 256U /* lower limit on max payload */
#define FC_MAX_FRAME (FC_MAX_PAYLOAD + FC_FRAME_HEADER_LEN)
#define FC_MIN_MAX_FRAME (FC_MIN_MAX_PAYLOAD + FC_FRAME_HEADER_LEN)
/*
* fh_r_ctl - Routing control definitions.
*/
/*
* FC-4 device_data.
*/
enum fc_rctl {
FC_RCTL_DD_UNCAT = 0x00, /* uncategorized information */
FC_RCTL_DD_SOL_DATA = 0x01, /* solicited data */
FC_RCTL_DD_UNSOL_CTL = 0x02, /* unsolicited control */
FC_RCTL_DD_SOL_CTL = 0x03, /* solicited control or reply */
FC_RCTL_DD_UNSOL_DATA = 0x04, /* unsolicited data */
FC_RCTL_DD_DATA_DESC = 0x05, /* data descriptor */
FC_RCTL_DD_UNSOL_CMD = 0x06, /* unsolicited command */
FC_RCTL_DD_CMD_STATUS = 0x07, /* command status */
#define FC_RCTL_ILS_REQ FC_RCTL_DD_UNSOL_CTL /* ILS request */
#define FC_RCTL_ILS_REP FC_RCTL_DD_SOL_CTL /* ILS reply */
/*
* Extended Link_Data
*/
FC_RCTL_ELS_REQ = 0x22, /* extended link services request */
FC_RCTL_ELS_REP = 0x23, /* extended link services reply */
FC_RCTL_ELS4_REQ = 0x32, /* FC-4 ELS request */
FC_RCTL_ELS4_REP = 0x33, /* FC-4 ELS reply */
/*
* Optional Extended Headers
*/
FC_RCTL_VFTH = 0x50, /* virtual fabric tagging header */
FC_RCTL_IFRH = 0x51, /* inter-fabric routing header */
FC_RCTL_ENCH = 0x52, /* encapsulation header */
/*
* Basic Link Services fh_r_ctl values.
*/
FC_RCTL_BA_NOP = 0x80, /* basic link service NOP */
FC_RCTL_BA_ABTS = 0x81, /* basic link service abort */
FC_RCTL_BA_RMC = 0x82, /* remove connection */
FC_RCTL_BA_ACC = 0x84, /* basic accept */
FC_RCTL_BA_RJT = 0x85, /* basic reject */
FC_RCTL_BA_PRMT = 0x86, /* dedicated connection preempted */
/*
* Link Control Information.
*/
FC_RCTL_ACK_1 = 0xc0, /* acknowledge_1 */
FC_RCTL_ACK_0 = 0xc1, /* acknowledge_0 */
FC_RCTL_P_RJT = 0xc2, /* port reject */
FC_RCTL_F_RJT = 0xc3, /* fabric reject */
FC_RCTL_P_BSY = 0xc4, /* port busy */
FC_RCTL_F_BSY = 0xc5, /* fabric busy to data frame */
FC_RCTL_F_BSYL = 0xc6, /* fabric busy to link control frame */
FC_RCTL_LCR = 0xc7, /* link credit reset */
FC_RCTL_END = 0xc9, /* end */
};
/* incomplete list of definitions */
/*
* R_CTL names initializer.
* Please keep this matching the above definitions.
*/
#define FC_RCTL_NAMES_INIT { \
[FC_RCTL_DD_UNCAT] = "uncat", \
[FC_RCTL_DD_SOL_DATA] = "sol data", \
[FC_RCTL_DD_UNSOL_CTL] = "unsol ctl", \
[FC_RCTL_DD_SOL_CTL] = "sol ctl/reply", \
[FC_RCTL_DD_UNSOL_DATA] = "unsol data", \
[FC_RCTL_DD_DATA_DESC] = "data desc", \
[FC_RCTL_DD_UNSOL_CMD] = "unsol cmd", \
[FC_RCTL_DD_CMD_STATUS] = "cmd status", \
[FC_RCTL_ELS_REQ] = "ELS req", \
[FC_RCTL_ELS_REP] = "ELS rep", \
[FC_RCTL_ELS4_REQ] = "FC-4 ELS req", \
[FC_RCTL_ELS4_REP] = "FC-4 ELS rep", \
[FC_RCTL_BA_NOP] = "BLS NOP", \
[FC_RCTL_BA_ABTS] = "BLS abort", \
[FC_RCTL_BA_RMC] = "BLS remove connection", \
[FC_RCTL_BA_ACC] = "BLS accept", \
[FC_RCTL_BA_RJT] = "BLS reject", \
[FC_RCTL_BA_PRMT] = "BLS dedicated connection preempted", \
[FC_RCTL_ACK_1] = "LC ACK_1", \
[FC_RCTL_ACK_0] = "LC ACK_0", \
[FC_RCTL_P_RJT] = "LC port reject", \
[FC_RCTL_F_RJT] = "LC fabric reject", \
[FC_RCTL_P_BSY] = "LC port busy", \
[FC_RCTL_F_BSY] = "LC fabric busy to data frame", \
[FC_RCTL_F_BSYL] = "LC fabric busy to link control frame",\
[FC_RCTL_LCR] = "LC link credit reset", \
[FC_RCTL_END] = "LC end", \
}
/*
* Well-known fabric addresses.
*/
enum fc_well_known_fid {
FC_FID_NONE = 0x000000, /* No destination */
FC_FID_BCAST = 0xffffff, /* broadcast */
FC_FID_FLOGI = 0xfffffe, /* fabric login */
FC_FID_FCTRL = 0xfffffd, /* fabric controller */
FC_FID_DIR_SERV = 0xfffffc, /* directory server */
FC_FID_TIME_SERV = 0xfffffb, /* time server */
FC_FID_MGMT_SERV = 0xfffffa, /* management server */
FC_FID_QOS = 0xfffff9, /* QoS Facilitator */
FC_FID_ALIASES = 0xfffff8, /* alias server (FC-PH2) */
FC_FID_SEC_KEY = 0xfffff7, /* Security key dist. server */
FC_FID_CLOCK = 0xfffff6, /* clock synch server */
FC_FID_MCAST_SERV = 0xfffff5, /* multicast server */
};
#define FC_FID_WELL_KNOWN_MAX 0xffffff /* highest well-known fabric ID */
#define FC_FID_WELL_KNOWN_BASE 0xfffff5 /* start of well-known fabric ID */
/*
* Other well-known addresses, outside the above contiguous range.
*/
#define FC_FID_DOM_MGR 0xfffc00 /* domain manager base */
/*
* Fabric ID bytes.
*/
#define FC_FID_DOMAIN 0
#define FC_FID_PORT 1
#define FC_FID_LINK 2
/*
* fh_type codes
*/
enum fc_fh_type {
FC_TYPE_BLS = 0x00, /* basic link service */
FC_TYPE_ELS = 0x01, /* extended link service */
FC_TYPE_IP = 0x05, /* IP over FC, RFC 4338 */
FC_TYPE_FCP = 0x08, /* SCSI FCP */
FC_TYPE_CT = 0x20, /* Fibre Channel Services (FC-CT) */
FC_TYPE_ILS = 0x22, /* internal link service */
FC_TYPE_NVME = 0x28, /* FC-NVME */
};
/*
* FC_TYPE names initializer.
* Please keep this matching the above definitions.
*/
#define FC_TYPE_NAMES_INIT { \
[FC_TYPE_BLS] = "BLS", \
[FC_TYPE_ELS] = "ELS", \
[FC_TYPE_IP] = "IP", \
[FC_TYPE_FCP] = "FCP", \
[FC_TYPE_CT] = "CT", \
[FC_TYPE_ILS] = "ILS", \
[FC_TYPE_NVME] = "NVME", \
}
/*
* Exchange IDs.
*/
#define FC_XID_UNKNOWN 0xffff /* unknown exchange ID */
#define FC_XID_MIN 0x0 /* supported min exchange ID */
#define FC_XID_MAX 0xfffe /* supported max exchange ID */
/*
* fh_f_ctl - Frame control flags.
*/
#define FC_FC_EX_CTX (1 << 23) /* sent by responder to exchange */
#define FC_FC_SEQ_CTX (1 << 22) /* sent by responder to sequence */
#define FC_FC_FIRST_SEQ (1 << 21) /* first sequence of this exchange */
#define FC_FC_LAST_SEQ (1 << 20) /* last sequence of this exchange */
#define FC_FC_END_SEQ (1 << 19) /* last frame of sequence */
#define FC_FC_END_CONN (1 << 18) /* end of class 1 connection pending */
#define FC_FC_RES_B17 (1 << 17) /* reserved */
#define FC_FC_SEQ_INIT (1 << 16) /* transfer of sequence initiative */
#define FC_FC_X_ID_REASS (1 << 15) /* exchange ID has been changed */
#define FC_FC_X_ID_INVAL (1 << 14) /* exchange ID invalidated */
#define FC_FC_ACK_1 (1 << 12) /* 13:12 = 1: ACK_1 expected */
#define FC_FC_ACK_N (2 << 12) /* 13:12 = 2: ACK_N expected */
#define FC_FC_ACK_0 (3 << 12) /* 13:12 = 3: ACK_0 expected */
#define FC_FC_RES_B11 (1 << 11) /* reserved */
#define FC_FC_RES_B10 (1 << 10) /* reserved */
#define FC_FC_RETX_SEQ (1 << 9) /* retransmitted sequence */
#define FC_FC_UNI_TX (1 << 8) /* unidirectional transmit (class 1) */
#define FC_FC_CONT_SEQ(i) ((i) << 6)
#define FC_FC_ABT_SEQ(i) ((i) << 4)
#define FC_FC_REL_OFF (1 << 3) /* parameter is relative offset */
#define FC_FC_RES2 (1 << 2) /* reserved */
#define FC_FC_FILL(i) ((i) & 3) /* 1:0: bytes of trailing fill */
/*
* BA_ACC payload.
*/
struct fc_ba_acc {
__u8 ba_seq_id_val; /* SEQ_ID validity */
#define FC_BA_SEQ_ID_VAL 0x80
__u8 ba_seq_id; /* SEQ_ID of seq last deliverable */
__u8 ba_resvd[2]; /* reserved */
__be16 ba_ox_id; /* OX_ID for aborted seq or exch */
__be16 ba_rx_id; /* RX_ID for aborted seq or exch */
__be16 ba_low_seq_cnt; /* low SEQ_CNT of aborted seq */
__be16 ba_high_seq_cnt; /* high SEQ_CNT of aborted seq */
};
/*
* BA_RJT: Basic Reject payload.
*/
struct fc_ba_rjt {
__u8 br_resvd; /* reserved */
__u8 br_reason; /* reason code */
__u8 br_explan; /* reason explanation */
__u8 br_vendor; /* vendor unique code */
};
/*
* BA_RJT reason codes.
* From FS-2.
*/
enum fc_ba_rjt_reason {
FC_BA_RJT_NONE = 0, /* in software this means no reject */
FC_BA_RJT_INVL_CMD = 0x01, /* invalid command code */
FC_BA_RJT_LOG_ERR = 0x03, /* logical error */
FC_BA_RJT_LOG_BUSY = 0x05, /* logical busy */
FC_BA_RJT_PROTO_ERR = 0x07, /* protocol error */
FC_BA_RJT_UNABLE = 0x09, /* unable to perform request */
FC_BA_RJT_VENDOR = 0xff, /* vendor-specific (see br_vendor) */
};
/*
* BA_RJT reason code explanations.
*/
enum fc_ba_rjt_explan {
FC_BA_RJT_EXP_NONE = 0x00, /* no additional expanation */
FC_BA_RJT_INV_XID = 0x03, /* invalid OX_ID-RX_ID combination */
FC_BA_RJT_ABT = 0x05, /* sequence aborted, no seq info */
};
/*
* P_RJT or F_RJT: Port Reject or Fabric Reject parameter field.
*/
struct fc_pf_rjt {
__u8 rj_action; /* reserved */
__u8 rj_reason; /* reason code */
__u8 rj_resvd; /* reserved */
__u8 rj_vendor; /* vendor unique code */
};
/*
* P_RJT and F_RJT reject reason codes.
*/
enum fc_pf_rjt_reason {
FC_RJT_NONE = 0, /* non-reject (reserved by standard) */
FC_RJT_INVL_DID = 0x01, /* invalid destination ID */
FC_RJT_INVL_SID = 0x02, /* invalid source ID */
FC_RJT_P_UNAV_T = 0x03, /* port unavailable, temporary */
FC_RJT_P_UNAV = 0x04, /* port unavailable, permanent */
FC_RJT_CLS_UNSUP = 0x05, /* class not supported */
FC_RJT_DEL_USAGE = 0x06, /* delimiter usage error */
FC_RJT_TYPE_UNSUP = 0x07, /* type not supported */
FC_RJT_LINK_CTL = 0x08, /* invalid link control */
FC_RJT_R_CTL = 0x09, /* invalid R_CTL field */
FC_RJT_F_CTL = 0x0a, /* invalid F_CTL field */
FC_RJT_OX_ID = 0x0b, /* invalid originator exchange ID */
FC_RJT_RX_ID = 0x0c, /* invalid responder exchange ID */
FC_RJT_SEQ_ID = 0x0d, /* invalid sequence ID */
FC_RJT_DF_CTL = 0x0e, /* invalid DF_CTL field */
FC_RJT_SEQ_CNT = 0x0f, /* invalid SEQ_CNT field */
FC_RJT_PARAM = 0x10, /* invalid parameter field */
FC_RJT_EXCH_ERR = 0x11, /* exchange error */
FC_RJT_PROTO = 0x12, /* protocol error */
FC_RJT_LEN = 0x13, /* incorrect length */
FC_RJT_UNEXP_ACK = 0x14, /* unexpected ACK */
FC_RJT_FAB_CLASS = 0x15, /* class unsupported by fabric entity */
FC_RJT_LOGI_REQ = 0x16, /* login required */
FC_RJT_SEQ_XS = 0x17, /* excessive sequences attempted */
FC_RJT_EXCH_EST = 0x18, /* unable to establish exchange */
FC_RJT_FAB_UNAV = 0x1a, /* fabric unavailable */
FC_RJT_VC_ID = 0x1b, /* invalid VC_ID (class 4) */
FC_RJT_CS_CTL = 0x1c, /* invalid CS_CTL field */
FC_RJT_INSUF_RES = 0x1d, /* insuff. resources for VC (Class 4) */
FC_RJT_INVL_CLS = 0x1f, /* invalid class of service */
FC_RJT_PREEMT_RJT = 0x20, /* preemption request rejected */
FC_RJT_PREEMT_DIS = 0x21, /* preemption not enabled */
FC_RJT_MCAST_ERR = 0x22, /* multicast error */
FC_RJT_MCAST_ET = 0x23, /* multicast error terminate */
FC_RJT_PRLI_REQ = 0x24, /* process login required */
FC_RJT_INVL_ATT = 0x25, /* invalid attachment */
FC_RJT_VENDOR = 0xff, /* vendor specific reject */
};
/* default timeout values */
#define FC_DEF_E_D_TOV 2000UL
#define FC_DEF_R_A_TOV 10000UL
#endif /* _FC_FS_H_ */
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