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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * Copyright(c) 2007 Intel Corporation. All rights reserved.4 *5 * Maintained at www.Open-FCoE.org6 */7 8#ifndef _FC_FS_H_9#define _FC_FS_H_10 11#include <linux/types.h>12 13/*14 * Fibre Channel Framing and Signalling definitions.15 * From T11 FC-FS-2 Rev 0.90 - 9 August 2005.16 */17 18/*19 * Frame header20 */21struct fc_frame_header {22 __u8 fh_r_ctl; /* routing control */23 __u8 fh_d_id[3]; /* Destination ID */24 25 __u8 fh_cs_ctl; /* class of service control / pri */26 __u8 fh_s_id[3]; /* Source ID */27 28 __u8 fh_type; /* see enum fc_fh_type below */29 __u8 fh_f_ctl[3]; /* frame control */30 31 __u8 fh_seq_id; /* sequence ID */32 __u8 fh_df_ctl; /* data field control */33 __be16 fh_seq_cnt; /* sequence count */34 35 __be16 fh_ox_id; /* originator exchange ID */36 __be16 fh_rx_id; /* responder exchange ID */37 __be32 fh_parm_offset; /* parameter or relative offset */38};39 40#define FC_FRAME_HEADER_LEN 24 /* expected length of structure */41 42#define FC_MAX_PAYLOAD 2112U /* max payload length in bytes */43#define FC_MIN_MAX_PAYLOAD 256U /* lower limit on max payload */44 45#define FC_MAX_FRAME (FC_MAX_PAYLOAD + FC_FRAME_HEADER_LEN)46#define FC_MIN_MAX_FRAME (FC_MIN_MAX_PAYLOAD + FC_FRAME_HEADER_LEN)47 48/*49 * fh_r_ctl - Routing control definitions.50 */51 /*52 * FC-4 device_data.53 */54enum fc_rctl {55 FC_RCTL_DD_UNCAT = 0x00, /* uncategorized information */56 FC_RCTL_DD_SOL_DATA = 0x01, /* solicited data */57 FC_RCTL_DD_UNSOL_CTL = 0x02, /* unsolicited control */58 FC_RCTL_DD_SOL_CTL = 0x03, /* solicited control or reply */59 FC_RCTL_DD_UNSOL_DATA = 0x04, /* unsolicited data */60 FC_RCTL_DD_DATA_DESC = 0x05, /* data descriptor */61 FC_RCTL_DD_UNSOL_CMD = 0x06, /* unsolicited command */62 FC_RCTL_DD_CMD_STATUS = 0x07, /* command status */63 64#define FC_RCTL_ILS_REQ FC_RCTL_DD_UNSOL_CTL /* ILS request */65#define FC_RCTL_ILS_REP FC_RCTL_DD_SOL_CTL /* ILS reply */66 67 /*68 * Extended Link_Data69 */70 FC_RCTL_ELS_REQ = 0x22, /* extended link services request */71 FC_RCTL_ELS_REP = 0x23, /* extended link services reply */72 FC_RCTL_ELS4_REQ = 0x32, /* FC-4 ELS request */73 FC_RCTL_ELS4_REP = 0x33, /* FC-4 ELS reply */74 /*75 * Optional Extended Headers76 */77 FC_RCTL_VFTH = 0x50, /* virtual fabric tagging header */78 FC_RCTL_IFRH = 0x51, /* inter-fabric routing header */79 FC_RCTL_ENCH = 0x52, /* encapsulation header */80 /*81 * Basic Link Services fh_r_ctl values.82 */83 FC_RCTL_BA_NOP = 0x80, /* basic link service NOP */84 FC_RCTL_BA_ABTS = 0x81, /* basic link service abort */85 FC_RCTL_BA_RMC = 0x82, /* remove connection */86 FC_RCTL_BA_ACC = 0x84, /* basic accept */87 FC_RCTL_BA_RJT = 0x85, /* basic reject */88 FC_RCTL_BA_PRMT = 0x86, /* dedicated connection preempted */89 /*90 * Link Control Information.91 */92 FC_RCTL_ACK_1 = 0xc0, /* acknowledge_1 */93 FC_RCTL_ACK_0 = 0xc1, /* acknowledge_0 */94 FC_RCTL_P_RJT = 0xc2, /* port reject */95 FC_RCTL_F_RJT = 0xc3, /* fabric reject */96 FC_RCTL_P_BSY = 0xc4, /* port busy */97 FC_RCTL_F_BSY = 0xc5, /* fabric busy to data frame */98 FC_RCTL_F_BSYL = 0xc6, /* fabric busy to link control frame */99 FC_RCTL_LCR = 0xc7, /* link credit reset */100 FC_RCTL_END = 0xc9, /* end */101};102 /* incomplete list of definitions */103 104/*105 * R_CTL names initializer.106 * Please keep this matching the above definitions.107 */108#define FC_RCTL_NAMES_INIT { \109 [FC_RCTL_DD_UNCAT] = "uncat", \110 [FC_RCTL_DD_SOL_DATA] = "sol data", \111 [FC_RCTL_DD_UNSOL_CTL] = "unsol ctl", \112 [FC_RCTL_DD_SOL_CTL] = "sol ctl/reply", \113 [FC_RCTL_DD_UNSOL_DATA] = "unsol data", \114 [FC_RCTL_DD_DATA_DESC] = "data desc", \115 [FC_RCTL_DD_UNSOL_CMD] = "unsol cmd", \116 [FC_RCTL_DD_CMD_STATUS] = "cmd status", \117 [FC_RCTL_ELS_REQ] = "ELS req", \118 [FC_RCTL_ELS_REP] = "ELS rep", \119 [FC_RCTL_ELS4_REQ] = "FC-4 ELS req", \120 [FC_RCTL_ELS4_REP] = "FC-4 ELS rep", \121 [FC_RCTL_BA_NOP] = "BLS NOP", \122 [FC_RCTL_BA_ABTS] = "BLS abort", \123 [FC_RCTL_BA_RMC] = "BLS remove connection", \124 [FC_RCTL_BA_ACC] = "BLS accept", \125 [FC_RCTL_BA_RJT] = "BLS reject", \126 [FC_RCTL_BA_PRMT] = "BLS dedicated connection preempted", \127 [FC_RCTL_ACK_1] = "LC ACK_1", \128 [FC_RCTL_ACK_0] = "LC ACK_0", \129 [FC_RCTL_P_RJT] = "LC port reject", \130 [FC_RCTL_F_RJT] = "LC fabric reject", \131 [FC_RCTL_P_BSY] = "LC port busy", \132 [FC_RCTL_F_BSY] = "LC fabric busy to data frame", \133 [FC_RCTL_F_BSYL] = "LC fabric busy to link control frame",\134 [FC_RCTL_LCR] = "LC link credit reset", \135 [FC_RCTL_END] = "LC end", \136}137 138/*139 * Well-known fabric addresses.140 */141enum fc_well_known_fid {142 FC_FID_NONE = 0x000000, /* No destination */143 FC_FID_BCAST = 0xffffff, /* broadcast */144 FC_FID_FLOGI = 0xfffffe, /* fabric login */145 FC_FID_FCTRL = 0xfffffd, /* fabric controller */146 FC_FID_DIR_SERV = 0xfffffc, /* directory server */147 FC_FID_TIME_SERV = 0xfffffb, /* time server */148 FC_FID_MGMT_SERV = 0xfffffa, /* management server */149 FC_FID_QOS = 0xfffff9, /* QoS Facilitator */150 FC_FID_ALIASES = 0xfffff8, /* alias server (FC-PH2) */151 FC_FID_SEC_KEY = 0xfffff7, /* Security key dist. server */152 FC_FID_CLOCK = 0xfffff6, /* clock synch server */153 FC_FID_MCAST_SERV = 0xfffff5, /* multicast server */154};155 156#define FC_FID_WELL_KNOWN_MAX 0xffffff /* highest well-known fabric ID */157#define FC_FID_WELL_KNOWN_BASE 0xfffff5 /* start of well-known fabric ID */158 159/*160 * Other well-known addresses, outside the above contiguous range.161 */162#define FC_FID_DOM_MGR 0xfffc00 /* domain manager base */163 164/*165 * Fabric ID bytes.166 */167#define FC_FID_DOMAIN 0168#define FC_FID_PORT 1169#define FC_FID_LINK 2170 171/*172 * fh_type codes173 */174enum fc_fh_type {175 FC_TYPE_BLS = 0x00, /* basic link service */176 FC_TYPE_ELS = 0x01, /* extended link service */177 FC_TYPE_IP = 0x05, /* IP over FC, RFC 4338 */178 FC_TYPE_FCP = 0x08, /* SCSI FCP */179 FC_TYPE_CT = 0x20, /* Fibre Channel Services (FC-CT) */180 FC_TYPE_ILS = 0x22, /* internal link service */181 FC_TYPE_NVME = 0x28, /* FC-NVME */182};183 184/*185 * FC_TYPE names initializer.186 * Please keep this matching the above definitions.187 */188#define FC_TYPE_NAMES_INIT { \189 [FC_TYPE_BLS] = "BLS", \190 [FC_TYPE_ELS] = "ELS", \191 [FC_TYPE_IP] = "IP", \192 [FC_TYPE_FCP] = "FCP", \193 [FC_TYPE_CT] = "CT", \194 [FC_TYPE_ILS] = "ILS", \195 [FC_TYPE_NVME] = "NVME", \196}197 198/*199 * Exchange IDs.200 */201#define FC_XID_UNKNOWN 0xffff /* unknown exchange ID */202#define FC_XID_MIN 0x0 /* supported min exchange ID */203#define FC_XID_MAX 0xfffe /* supported max exchange ID */204 205/*206 * fh_f_ctl - Frame control flags.207 */208#define FC_FC_EX_CTX (1 << 23) /* sent by responder to exchange */209#define FC_FC_SEQ_CTX (1 << 22) /* sent by responder to sequence */210#define FC_FC_FIRST_SEQ (1 << 21) /* first sequence of this exchange */211#define FC_FC_LAST_SEQ (1 << 20) /* last sequence of this exchange */212#define FC_FC_END_SEQ (1 << 19) /* last frame of sequence */213#define FC_FC_END_CONN (1 << 18) /* end of class 1 connection pending */214#define FC_FC_RES_B17 (1 << 17) /* reserved */215#define FC_FC_SEQ_INIT (1 << 16) /* transfer of sequence initiative */216#define FC_FC_X_ID_REASS (1 << 15) /* exchange ID has been changed */217#define FC_FC_X_ID_INVAL (1 << 14) /* exchange ID invalidated */218 219#define FC_FC_ACK_1 (1 << 12) /* 13:12 = 1: ACK_1 expected */220#define FC_FC_ACK_N (2 << 12) /* 13:12 = 2: ACK_N expected */221#define FC_FC_ACK_0 (3 << 12) /* 13:12 = 3: ACK_0 expected */222 223#define FC_FC_RES_B11 (1 << 11) /* reserved */224#define FC_FC_RES_B10 (1 << 10) /* reserved */225#define FC_FC_RETX_SEQ (1 << 9) /* retransmitted sequence */226#define FC_FC_UNI_TX (1 << 8) /* unidirectional transmit (class 1) */227#define FC_FC_CONT_SEQ(i) ((i) << 6)228#define FC_FC_ABT_SEQ(i) ((i) << 4)229#define FC_FC_REL_OFF (1 << 3) /* parameter is relative offset */230#define FC_FC_RES2 (1 << 2) /* reserved */231#define FC_FC_FILL(i) ((i) & 3) /* 1:0: bytes of trailing fill */232 233/*234 * BA_ACC payload.235 */236struct fc_ba_acc {237 __u8 ba_seq_id_val; /* SEQ_ID validity */238#define FC_BA_SEQ_ID_VAL 0x80239 __u8 ba_seq_id; /* SEQ_ID of seq last deliverable */240 __u8 ba_resvd[2]; /* reserved */241 __be16 ba_ox_id; /* OX_ID for aborted seq or exch */242 __be16 ba_rx_id; /* RX_ID for aborted seq or exch */243 __be16 ba_low_seq_cnt; /* low SEQ_CNT of aborted seq */244 __be16 ba_high_seq_cnt; /* high SEQ_CNT of aborted seq */245};246 247/*248 * BA_RJT: Basic Reject payload.249 */250struct fc_ba_rjt {251 __u8 br_resvd; /* reserved */252 __u8 br_reason; /* reason code */253 __u8 br_explan; /* reason explanation */254 __u8 br_vendor; /* vendor unique code */255};256 257/*258 * BA_RJT reason codes.259 * From FS-2.260 */261enum fc_ba_rjt_reason {262 FC_BA_RJT_NONE = 0, /* in software this means no reject */263 FC_BA_RJT_INVL_CMD = 0x01, /* invalid command code */264 FC_BA_RJT_LOG_ERR = 0x03, /* logical error */265 FC_BA_RJT_LOG_BUSY = 0x05, /* logical busy */266 FC_BA_RJT_PROTO_ERR = 0x07, /* protocol error */267 FC_BA_RJT_UNABLE = 0x09, /* unable to perform request */268 FC_BA_RJT_VENDOR = 0xff, /* vendor-specific (see br_vendor) */269};270 271/*272 * BA_RJT reason code explanations.273 */274enum fc_ba_rjt_explan {275 FC_BA_RJT_EXP_NONE = 0x00, /* no additional expanation */276 FC_BA_RJT_INV_XID = 0x03, /* invalid OX_ID-RX_ID combination */277 FC_BA_RJT_ABT = 0x05, /* sequence aborted, no seq info */278};279 280/*281 * P_RJT or F_RJT: Port Reject or Fabric Reject parameter field.282 */283struct fc_pf_rjt {284 __u8 rj_action; /* reserved */285 __u8 rj_reason; /* reason code */286 __u8 rj_resvd; /* reserved */287 __u8 rj_vendor; /* vendor unique code */288};289 290/*291 * P_RJT and F_RJT reject reason codes.292 */293enum fc_pf_rjt_reason {294 FC_RJT_NONE = 0, /* non-reject (reserved by standard) */295 FC_RJT_INVL_DID = 0x01, /* invalid destination ID */296 FC_RJT_INVL_SID = 0x02, /* invalid source ID */297 FC_RJT_P_UNAV_T = 0x03, /* port unavailable, temporary */298 FC_RJT_P_UNAV = 0x04, /* port unavailable, permanent */299 FC_RJT_CLS_UNSUP = 0x05, /* class not supported */300 FC_RJT_DEL_USAGE = 0x06, /* delimiter usage error */301 FC_RJT_TYPE_UNSUP = 0x07, /* type not supported */302 FC_RJT_LINK_CTL = 0x08, /* invalid link control */303 FC_RJT_R_CTL = 0x09, /* invalid R_CTL field */304 FC_RJT_F_CTL = 0x0a, /* invalid F_CTL field */305 FC_RJT_OX_ID = 0x0b, /* invalid originator exchange ID */306 FC_RJT_RX_ID = 0x0c, /* invalid responder exchange ID */307 FC_RJT_SEQ_ID = 0x0d, /* invalid sequence ID */308 FC_RJT_DF_CTL = 0x0e, /* invalid DF_CTL field */309 FC_RJT_SEQ_CNT = 0x0f, /* invalid SEQ_CNT field */310 FC_RJT_PARAM = 0x10, /* invalid parameter field */311 FC_RJT_EXCH_ERR = 0x11, /* exchange error */312 FC_RJT_PROTO = 0x12, /* protocol error */313 FC_RJT_LEN = 0x13, /* incorrect length */314 FC_RJT_UNEXP_ACK = 0x14, /* unexpected ACK */315 FC_RJT_FAB_CLASS = 0x15, /* class unsupported by fabric entity */316 FC_RJT_LOGI_REQ = 0x16, /* login required */317 FC_RJT_SEQ_XS = 0x17, /* excessive sequences attempted */318 FC_RJT_EXCH_EST = 0x18, /* unable to establish exchange */319 FC_RJT_FAB_UNAV = 0x1a, /* fabric unavailable */320 FC_RJT_VC_ID = 0x1b, /* invalid VC_ID (class 4) */321 FC_RJT_CS_CTL = 0x1c, /* invalid CS_CTL field */322 FC_RJT_INSUF_RES = 0x1d, /* insuff. resources for VC (Class 4) */323 FC_RJT_INVL_CLS = 0x1f, /* invalid class of service */324 FC_RJT_PREEMT_RJT = 0x20, /* preemption request rejected */325 FC_RJT_PREEMT_DIS = 0x21, /* preemption not enabled */326 FC_RJT_MCAST_ERR = 0x22, /* multicast error */327 FC_RJT_MCAST_ET = 0x23, /* multicast error terminate */328 FC_RJT_PRLI_REQ = 0x24, /* process login required */329 FC_RJT_INVL_ATT = 0x25, /* invalid attachment */330 FC_RJT_VENDOR = 0xff, /* vendor specific reject */331};332 333/* default timeout values */334 335#define FC_DEF_E_D_TOV 2000UL336#define FC_DEF_R_A_TOV 10000UL337 338#endif /* _FC_FS_H_ */339