/*
*
* 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 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", \
}
/*
* 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 <<
