include/uapi/scsi/fc/fc_els.h

   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.org
   6  */
   7
   8 #ifndef _FC_ELS_H_
   9 #define _FC_ELS_H_
  10
  11 #include <linux/types.h>
  12 #include <asm/byteorder.h>
  13
  14 /*
  15  * Fibre Channel Switch - Enhanced Link Services definitions.
  16  * From T11 FC-LS Rev 1.2 June 7, 2005.
  17  */
  18
  19 /*
  20  * ELS Command codes - byte 0 of the frame payload
  21  */
  22 enum fc_els_cmd {
  23         ELS_LS_RJT =    0x01,   /* ESL reject */
  24         ELS_LS_ACC =    0x02,   /* ESL Accept */
  25         ELS_PLOGI =     0x03,   /* N_Port login */
  26         ELS_FLOGI =     0x04,   /* F_Port login */
  27         ELS_LOGO =      0x05,   /* Logout */
  28         ELS_ABTX =      0x06,   /* Abort exchange - obsolete */
  29         ELS_RCS =       0x07,   /* read connection status */
  30         ELS_RES =       0x08,   /* read exchange status block */
  31         ELS_RSS =       0x09,   /* read sequence status block */
  32         ELS_RSI =       0x0a,   /* read sequence initiative */
  33         ELS_ESTS =      0x0b,   /* establish streaming */
  34         ELS_ESTC =      0x0c,   /* estimate credit */
  35         ELS_ADVC =      0x0d,   /* advise credit */
  36         ELS_RTV =       0x0e,   /* read timeout value */
  37         ELS_RLS =       0x0f,   /* read link error status block */
  38         ELS_ECHO =      0x10,   /* echo */
  39         ELS_TEST =      0x11,   /* test */
  40         ELS_RRQ =       0x12,   /* reinstate recovery qualifier */
  41         ELS_REC =       0x13,   /* read exchange concise */
  42         ELS_SRR =       0x14,   /* sequence retransmission request */
  43         ELS_FPIN =      0x16,   /* Fabric Performance Impact Notification */
  44         ELS_EDC =       0x17,   /* Exchange Diagnostic Capabilities */
  45         ELS_RDP =       0x18,   /* Read Diagnostic Parameters */
  46         ELS_RDF =       0x19,   /* Register Diagnostic Functions */
  47         ELS_PRLI =      0x20,   /* process login */
  48         ELS_PRLO =      0x21,   /* process logout */
  49         ELS_SCN =       0x22,   /* state change notification */
  50         ELS_TPLS =      0x23,   /* test process login state */
  51         ELS_TPRLO =     0x24,   /* third party process logout */
  52         ELS_LCLM =      0x25,   /* login control list mgmt (obs) */
  53         ELS_GAID =      0x30,   /* get alias_ID */
  54         ELS_FACT =      0x31,   /* fabric activate alias_id */
  55         ELS_FDACDT =    0x32,   /* fabric deactivate alias_id */
  56         ELS_NACT =      0x33,   /* N-port activate alias_id */
  57         ELS_NDACT =     0x34,   /* N-port deactivate alias_id */
  58         ELS_QOSR =      0x40,   /* quality of service request */
  59         ELS_RVCS =      0x41,   /* read virtual circuit status */
  60         ELS_PDISC =     0x50,   /* discover N_port service params */
  61         ELS_FDISC =     0x51,   /* discover F_port service params */
  62         ELS_ADISC =     0x52,   /* discover address */
  63         ELS_RNC =       0x53,   /* report node cap (obs) */
  64         ELS_FARP_REQ =  0x54,   /* FC ARP request */
  65         ELS_FARP_REPL = 0x55,   /* FC ARP reply */
  66         ELS_RPS =       0x56,   /* read port status block */
  67         ELS_RPL =       0x57,   /* read port list */
  68         ELS_RPBC =      0x58,   /* read port buffer condition */
  69         ELS_FAN =       0x60,   /* fabric address notification */
  70         ELS_RSCN =      0x61,   /* registered state change notification */
  71         ELS_SCR =       0x62,   /* state change registration */
  72         ELS_RNFT =      0x63,   /* report node FC-4 types */
  73         ELS_CSR =       0x68,   /* clock synch. request */
  74         ELS_CSU =       0x69,   /* clock synch. update */
  75         ELS_LINIT =     0x70,   /* loop initialize */
  76         ELS_LSTS =      0x72,   /* loop status */
  77         ELS_RNID =      0x78,   /* request node ID data */
  78         ELS_RLIR =      0x79,   /* registered link incident report */
  79         ELS_LIRR =      0x7a,   /* link incident record registration */
  80         ELS_SRL =       0x7b,   /* scan remote loop */
  81         ELS_SBRP =      0x7c,   /* set bit-error reporting params */
  82         ELS_RPSC =      0x7d,   /* report speed capabilities */
  83         ELS_QSA =       0x7e,   /* query security attributes */
  84         ELS_EVFP =      0x7f,   /* exchange virt. fabrics params */
  85         ELS_LKA =       0x80,   /* link keep-alive */
  86         ELS_AUTH_ELS =  0x90,   /* authentication ELS */
  87 };
  88
  89 /*
  90  * Initializer useful for decoding table.
  91  * Please keep this in sync with the above definitions.
  92  */
  93 #define FC_ELS_CMDS_INIT {                      \
  94         [ELS_LS_RJT] =  "LS_RJT",               \
  95         [ELS_LS_ACC] =  "LS_ACC",               \
  96         [ELS_PLOGI] =   "PLOGI",                \
  97         [ELS_FLOGI] =   "FLOGI",                \
  98         [ELS_LOGO] =    "LOGO",                 \
  99         [ELS_ABTX] =    "ABTX",                 \
 100         [ELS_RCS] =     "RCS",                  \
 101         [ELS_RES] =     "RES",                  \
 102         [ELS_RSS] =     "RSS",                  \
 103         [ELS_RSI] =     "RSI",                  \
 104         [ELS_ESTS] =    "ESTS",                 \
 105         [ELS_ESTC] =    "ESTC",                 \
 106         [ELS_ADVC] =    "ADVC",                 \
 107         [ELS_RTV] =     "RTV",                  \
 108         [ELS_RLS] =     "RLS",                  \
 109         [ELS_ECHO] =    "ECHO",                 \
 110         [ELS_TEST] =    "TEST",                 \
 111         [ELS_RRQ] =     "RRQ",                  \
 112         [ELS_REC] =     "REC",                  \
 113         [ELS_SRR] =     "SRR",                  \
 114         [ELS_FPIN] =    "FPIN",                 \
 115         [ELS_EDC] =     "EDC",                  \
 116         [ELS_RDP] =     "RDP",                  \
 117         [ELS_RDF] =     "RDF",                  \
 118         [ELS_PRLI] =    "PRLI",                 \
 119         [ELS_PRLO] =    "PRLO",                 \
 120         [ELS_SCN] =     "SCN",                  \
 121         [ELS_TPLS] =    "TPLS",                 \
 122         [ELS_TPRLO] =   "TPRLO",                \
 123         [ELS_LCLM] =    "LCLM",                 \
 124         [ELS_GAID] =    "GAID",                 \
 125         [ELS_FACT] =    "FACT",                 \
 126         [ELS_FDACDT] =  "FDACDT",               \
 127         [ELS_NACT] =    "NACT",                 \
 128         [ELS_NDACT] =   "NDACT",                \
 129         [ELS_QOSR] =    "QOSR",                 \
 130         [ELS_RVCS] =    "RVCS",                 \
 131         [ELS_PDISC] =   "PDISC",                \
 132         [ELS_FDISC] =   "FDISC",                \
 133         [ELS_ADISC] =   "ADISC",                \
 134         [ELS_RNC] =     "RNC",                  \
 135         [ELS_FARP_REQ] = "FARP_REQ",            \
 136         [ELS_FARP_REPL] =  "FARP_REPL",         \
 137         [ELS_RPS] =     "RPS",                  \
 138         [ELS_RPL] =     "RPL",                  \
 139         [ELS_RPBC] =    "RPBC",                 \
 140         [ELS_FAN] =     "FAN",                  \
 141         [ELS_RSCN] =    "RSCN",                 \
 142         [ELS_SCR] =     "SCR",                  \
 143         [ELS_RNFT] =    "RNFT",                 \
 144         [ELS_CSR] =     "CSR",                  \
 145         [ELS_CSU] =     "CSU",                  \
 146         [ELS_LINIT] =   "LINIT",                \
 147         [ELS_LSTS] =    "LSTS",                 \
 148         [ELS_RNID] =    "RNID",                 \
 149         [ELS_RLIR] =    "RLIR",                 \
 150         [ELS_LIRR] =    "LIRR",                 \
 151         [ELS_SRL] =     "SRL",                  \
 152         [ELS_SBRP] =    "SBRP",                 \
 153         [ELS_RPSC] =    "RPSC",                 \
 154         [ELS_QSA] =     "QSA",                  \
 155         [ELS_EVFP] =    "EVFP",                 \
 156         [ELS_LKA] =     "LKA",                  \
 157         [ELS_AUTH_ELS] = "AUTH_ELS",            \
 158 }
 159
 160 /*
 161  * LS_ACC payload.
 162  */
 163 struct fc_els_ls_acc {
 164         __u8          la_cmd;           /* command code ELS_LS_ACC */
 165         __u8          la_resv[3];       /* reserved */
 166 };
 167
 168 /*
 169  * ELS reject payload.
 170  */
 171 struct fc_els_ls_rjt {
 172         __u8    er_cmd;         /* command code ELS_LS_RJT */
 173         __u8    er_resv[4];     /* reserved must be zero */
 174         __u8    er_reason;      /* reason (enum fc_els_rjt_reason below) */
 175         __u8    er_explan;      /* explanation (enum fc_els_rjt_explan below) */
 176         __u8    er_vendor;      /* vendor specific code */
 177 };
 178
 179 /*
 180  * ELS reject reason codes (er_reason).
 181  */
 182 enum fc_els_rjt_reason {
 183         ELS_RJT_NONE =          0,      /* no reject - not to be sent */
 184         ELS_RJT_INVAL =         0x01,   /* invalid ELS command code */
 185         ELS_RJT_LOGIC =         0x03,   /* logical error */
 186         ELS_RJT_BUSY =          0x05,   /* logical busy */
 187         ELS_RJT_PROT =          0x07,   /* protocol error */
 188         ELS_RJT_UNAB =          0x09,   /* unable to perform command request */
 189         ELS_RJT_UNSUP =         0x0b,   /* command not supported */
 190         ELS_RJT_INPROG =        0x0e,   /* command already in progress */
 191         ELS_RJT_FIP =           0x20,   /* FIP error */
 192         ELS_RJT_VENDOR =        0xff,   /* vendor specific error */
 193 };
 194
 195
 196 /*
 197  * reason code explanation (er_explan).
 198  */
 199 enum fc_els_rjt_explan {
 200         ELS_EXPL_NONE =         0x00,   /* No additional explanation */
 201         ELS_EXPL_SPP_OPT_ERR =  0x01,   /* service parameter error - options */
 202         ELS_EXPL_SPP_ICTL_ERR = 0x03,   /* service parm error - initiator ctl */
 203         ELS_EXPL_AH =           0x11,   /* invalid association header */
 204         ELS_EXPL_AH_REQ =       0x13,   /* association_header required */
 205         ELS_EXPL_SID =          0x15,   /* invalid originator S_ID */
 206         ELS_EXPL_OXID_RXID =    0x17,   /* invalid OX_ID-RX_ID combination */
 207         ELS_EXPL_INPROG =       0x19,   /* Request already in progress */
 208         ELS_EXPL_PLOGI_REQD =   0x1e,   /* N_Port login required */
 209         ELS_EXPL_INSUF_RES =    0x29,   /* insufficient resources */
 210         ELS_EXPL_UNAB_DATA =    0x2a,   /* unable to supply requested data */
 211         ELS_EXPL_UNSUPR =       0x2c,   /* Request not supported */
 212         ELS_EXPL_INV_LEN =      0x2d,   /* Invalid payload length */
 213         ELS_EXPL_NOT_NEIGHBOR = 0x62,   /* VN2VN_Port not in neighbor set */
 214         /* TBD - above definitions incomplete */
 215 };
 216
 217 /*
 218  * Link Service TLV Descriptor Tag Values
 219  */
 220 enum fc_ls_tlv_dtag {
 221         ELS_DTAG_LS_REQ_INFO =          0x00000001,
 222                 /* Link Service Request Information Descriptor */
 223         ELS_DTAG_LNK_FAULT_CAP =        0x0001000D,
 224                 /* Link Fault Capability Descriptor */
 225         ELS_DTAG_CG_SIGNAL_CAP =        0x0001000F,
 226                 /* Congestion Signaling Capability Descriptor */
 227         ELS_DTAG_LNK_INTEGRITY =        0x00020001,
 228                 /* Link Integrity Notification Descriptor */
 229         ELS_DTAG_DELIVERY =             0x00020002,
 230                 /* Delivery Notification Descriptor */
 231         ELS_DTAG_PEER_CONGEST =         0x00020003,
 232                 /* Peer Congestion Notification Descriptor */
 233         ELS_DTAG_CONGESTION =           0x00020004,
 234                 /* Congestion Notification Descriptor */
 235         ELS_DTAG_FPIN_REGISTER =        0x00030001,
 236                 /* FPIN Registration Descriptor */
 237 };
 238
 239 /*
 240  * Initializer useful for decoding table.
 241  * Please keep this in sync with the above definitions.
 242  */
 243 #define FC_LS_TLV_DTAG_INIT {                                         \
 244         { ELS_DTAG_LS_REQ_INFO,         "Link Service Request Information" }, \
 245         { ELS_DTAG_LNK_FAULT_CAP,       "Link Fault Capability" },            \
 246         { ELS_DTAG_CG_SIGNAL_CAP,       "Congestion Signaling Capability" },  \
 247         { ELS_DTAG_LNK_INTEGRITY,       "Link Integrity Notification" },      \
 248         { ELS_DTAG_DELIVERY,            "Delivery Notification Present" },    \
 249         { ELS_DTAG_PEER_CONGEST,        "Peer Congestion Notification" },     \
 250         { ELS_DTAG_CONGESTION,          "Congestion Notification" },          \
 251         { ELS_DTAG_FPIN_REGISTER,       "FPIN Registration" },                \
 252 }
 253
 254
 255 /*
 256  * Generic Link Service TLV Descriptor format
 257  *
 258  * This structure, as it defines no payload, will also be referred to
 259  * as the "tlv header" - which contains the tag and len fields.
 260  */
 261 struct fc_tlv_desc {
 262         __be32          desc_tag;       /* Notification Descriptor Tag */
 263         __be32          desc_len;       /* Length of Descriptor (in bytes).
 264                                          * Size of descriptor excluding
 265                                          * desc_tag and desc_len fields.
 266                                          */
 267         __u8            desc_value[];  /* Descriptor Value */
 268 };
 269
 270 /* Descriptor tag and len fields are considered the mandatory header
 271  * for a descriptor
 272  */
 273 #define FC_TLV_DESC_HDR_SZ      sizeof(struct fc_tlv_desc)
 274
 275 /*
 276  * Macro, used when initializing payloads, to return the descriptor length.
 277  * Length is size of descriptor minus the tag and len fields.
 278  */
 279 #define FC_TLV_DESC_LENGTH_FROM_SZ(desc)        \
 280                 (sizeof(desc) - FC_TLV_DESC_HDR_SZ)
 281
 282 /* Macro, used on received payloads, to return the descriptor length */
 283 #define FC_TLV_DESC_SZ_FROM_LENGTH(tlv)         \
 284                 (__be32_to_cpu((tlv)->desc_len) + FC_TLV_DESC_HDR_SZ)
 285
 286 /*
 287  * This helper is used to walk descriptors in a descriptor list.
 288  * Given the address of the current descriptor, which minimally contains a
 289  * tag and len field, calculate the address of the next descriptor based
 290  * on the len field.
 291  */
 292 static inline void *fc_tlv_next_desc(void *desc)
 293 {
 294         struct fc_tlv_desc *tlv = desc;
 295
 296         return (desc + FC_TLV_DESC_SZ_FROM_LENGTH(tlv));
 297 }
 298
 299
 300 /*
 301  * Link Service Request Information Descriptor
 302  */
 303 struct fc_els_lsri_desc {
 304         __be32          desc_tag;       /* descriptor tag (0x0000 0001) */
 305         __be32          desc_len;       /* Length of Descriptor (in bytes) (4).
 306                                          * Size of descriptor excluding
 307                                          * desc_tag and desc_len fields.
 308                                          */
 309         struct {
 310                 __u8    cmd;            /* ELS cmd byte */
 311                 __u8    bytes[3];       /* bytes 1..3 */
 312         } rqst_w0;                      /* Request word 0 */
 313 };
 314
 315
 316 /*
 317  * Common service parameters (N ports).
 318  */
 319 struct fc_els_csp {
 320         __u8            sp_hi_ver;      /* highest version supported (obs.) */
 321         __u8            sp_lo_ver;      /* highest version supported (obs.) */
 322         __be16          sp_bb_cred;     /* buffer-to-buffer credits */
 323         __be16          sp_features;    /* common feature flags */
 324         __be16          sp_bb_data;     /* b-b state number and data field sz */
 325         union {
 326                 struct {
 327                         __be16  _sp_tot_seq; /* total concurrent sequences */
 328                         __be16  _sp_rel_off; /* rel. offset by info cat */
 329                 } sp_plogi;
 330                 struct {
 331                         __be32  _sp_r_a_tov; /* resource alloc. timeout msec */
 332                 } sp_flogi_acc;
 333         } sp_u;
 334         __be32          sp_e_d_tov;     /* error detect timeout value */
 335 };
 336 #define sp_tot_seq      sp_u.sp_plogi._sp_tot_seq
 337 #define sp_rel_off      sp_u.sp_plogi._sp_rel_off
 338 #define sp_r_a_tov      sp_u.sp_flogi_acc._sp_r_a_tov
 339
 340 #define FC_SP_BB_DATA_MASK 0xfff /* mask for data field size in sp_bb_data */
 341
 342 /*
 343  * Minimum and maximum values for max data field size in service parameters.
 344  */
 345 #define FC_SP_MIN_MAX_PAYLOAD   FC_MIN_MAX_PAYLOAD
 346 #define FC_SP_MAX_MAX_PAYLOAD   FC_MAX_PAYLOAD
 347
 348 /*
 349  * sp_features
 350  */
 351 #define FC_SP_FT_NPIV   0x8000  /* multiple N_Port_ID support (FLOGI) */
 352 #define FC_SP_FT_CIRO   0x8000  /* continuously increasing rel off (PLOGI) */
 353 #define FC_SP_FT_CLAD   0x8000  /* clean address (in FLOGI LS_ACC) */
 354 #define FC_SP_FT_RAND   0x4000  /* random relative offset */
 355 #define FC_SP_FT_VAL    0x2000  /* valid vendor version level */
 356 #define FC_SP_FT_NPIV_ACC       0x2000  /* NPIV assignment (FLOGI LS_ACC) */
 357 #define FC_SP_FT_FPORT  0x1000  /* F port (1) vs. N port (0) */
 358 #define FC_SP_FT_ABB    0x0800  /* alternate BB_credit management */
 359 #define FC_SP_FT_EDTR   0x0400  /* E_D_TOV Resolution is nanoseconds */
 360 #define FC_SP_FT_MCAST  0x0200  /* multicast */
 361 #define FC_SP_FT_BCAST  0x0100  /* broadcast */
 362 #define FC_SP_FT_HUNT   0x0080  /* hunt group */
 363 #define FC_SP_FT_SIMP   0x0040  /* dedicated simplex */
 364 #define FC_SP_FT_SEC    0x0020  /* reserved for security */
 365 #define FC_SP_FT_CSYN   0x0010  /* clock synch. supported */
 366 #define FC_SP_FT_RTTOV  0x0008  /* R_T_TOV value 100 uS, else 100 mS */
 367 #define FC_SP_FT_HALF   0x0004  /* dynamic half duplex */
 368 #define FC_SP_FT_SEQC   0x0002  /* SEQ_CNT */
 369 #define FC_SP_FT_PAYL   0x0001  /* FLOGI payload length 256, else 116 */
 370
 371 /*
 372  * Class-specific service parameters.
 373  */
 374 struct fc_els_cssp {
 375         __be16          cp_class;       /* class flags */
 376         __be16          cp_init;        /* initiator flags */
 377         __be16          cp_recip;       /* recipient flags */
 378         __be16          cp_rdfs;        /* receive data field size */
 379         __be16          cp_con_seq;     /* concurrent sequences */
 380         __be16          cp_ee_cred;     /* N-port end-to-end credit */
 381         __u8            cp_resv1;       /* reserved */
 382         __u8            cp_open_seq;    /* open sequences per exchange */
 383         __u8            _cp_resv2[2];   /* reserved */
 384 };
 385
 386 /*
 387  * cp_class flags.
 388  */
 389 #define FC_CPC_VALID    0x8000          /* class valid */
 390 #define FC_CPC_IMIX     0x4000          /* intermix mode */
 391 #define FC_CPC_SEQ      0x0800          /* sequential delivery */
 392 #define FC_CPC_CAMP     0x0200          /* camp-on */
 393 #define FC_CPC_PRI      0x0080          /* priority */
 394
 395 /*
 396  * cp_init flags.
 397  * (TBD: not all flags defined here).
 398  */
 399 #define FC_CPI_CSYN     0x0010          /* clock synch. capable */
 400
 401 /*
 402  * cp_recip flags.
 403  */
 404 #define FC_CPR_CSYN     0x0008          /* clock synch. capable */
 405
 406 /*
 407  * NFC_ELS_FLOGI: Fabric login request.
 408  * NFC_ELS_PLOGI: Port login request (same format).
 409  */
 410 struct fc_els_flogi {
 411         __u8            fl_cmd;         /* command */
 412         __u8            _fl_resvd[3];   /* must be zero */
 413         struct fc_els_csp fl_csp;       /* common service parameters */
 414         __be64          fl_wwpn;        /* port name */
 415         __be64          fl_wwnn;        /* node name */
 416         struct fc_els_cssp fl_cssp[4];  /* class 1-4 service parameters */
 417         __u8            fl_vend[16];    /* vendor version level */
 418 } __attribute__((__packed__));
 419
 420 /*
 421  * Process login service parameter page.
 422  */
 423 struct fc_els_spp {
 424         __u8            spp_type;       /* type code or common service params */
 425         __u8            spp_type_ext;   /* type code extension */
 426         __u8            spp_flags;
 427         __u8            _spp_resvd;
 428         __be32          spp_orig_pa;    /* originator process associator */
 429         __be32          spp_resp_pa;    /* responder process associator */
 430         __be32          spp_params;     /* service parameters */
 431 };
 432
 433 /*
 434  * spp_flags.
 435  */
 436 #define FC_SPP_OPA_VAL      0x80        /* originator proc. assoc. valid */
 437 #define FC_SPP_RPA_VAL      0x40        /* responder proc. assoc. valid */
 438 #define FC_SPP_EST_IMG_PAIR 0x20        /* establish image pair */
 439 #define FC_SPP_RESP_MASK    0x0f        /* mask for response code (below) */
 440
 441 /*
 442  * SPP response code in spp_flags - lower 4 bits.
 443  */
 444 enum fc_els_spp_resp {
 445         FC_SPP_RESP_ACK =       1,      /* request executed */
 446         FC_SPP_RESP_RES =       2,      /* unable due to lack of resources */
 447         FC_SPP_RESP_INIT =      3,      /* initialization not complete */
 448         FC_SPP_RESP_NO_PA =     4,      /* unknown process associator */
 449         FC_SPP_RESP_CONF =      5,      /* configuration precludes image pair */
 450         FC_SPP_RESP_COND =      6,      /* request completed conditionally */
 451         FC_SPP_RESP_MULT =      7,      /* unable to handle multiple SPPs */
 452         FC_SPP_RESP_INVL =      8,      /* SPP is invalid */
 453 };
 454
 455 /*
 456  * ELS_RRQ - Reinstate Recovery Qualifier
 457  */
 458 struct fc_els_rrq {
 459         __u8            rrq_cmd;        /* command (0x12) */
 460         __u8            rrq_zero[3];    /* specified as zero - part of cmd */
 461         __u8            rrq_resvd;      /* reserved */
 462         __u8            rrq_s_id[3];    /* originator FID */
 463         __be16          rrq_ox_id;      /* originator exchange ID */
 464         __be16          rrq_rx_id;      /* responders exchange ID */
 465 };
 466
 467 /*
 468  * ELS_REC - Read exchange concise.
 469  */
 470 struct fc_els_rec {
 471         __u8            rec_cmd;        /* command (0x13) */
 472         __u8            rec_zero[3];    /* specified as zero - part of cmd */
 473         __u8            rec_resvd;      /* reserved */
 474         __u8            rec_s_id[3];    /* originator FID */
 475         __be16          rec_ox_id;      /* originator exchange ID */
 476         __be16          rec_rx_id;      /* responders exchange ID */
 477 };
 478
 479 /*
 480  * ELS_REC LS_ACC payload.
 481  */
 482 struct fc_els_rec_acc {
 483         __u8            reca_cmd;       /* accept (0x02) */
 484         __u8            reca_zero[3];   /* specified as zero - part of cmd */
 485         __be16          reca_ox_id;     /* originator exchange ID */
 486         __be16          reca_rx_id;     /* responders exchange ID */
 487         __u8            reca_resvd1;    /* reserved */
 488         __u8            reca_ofid[3];   /* originator FID */
 489         __u8            reca_resvd2;    /* reserved */
 490         __u8            reca_rfid[3];   /* responder FID */
 491         __be32          reca_fc4value;  /* FC4 value */
 492         __be32          reca_e_stat;    /* ESB (exchange status block) status */
 493 };
 494
 495 /*
 496  * ELS_PRLI - Process login request and response.
 497  */
 498 struct fc_els_prli {
 499         __u8            prli_cmd;       /* command */
 500         __u8            prli_spp_len;   /* length of each serv. parm. page */
 501         __be16          prli_len;       /* length of entire payload */
 502         /* service parameter pages follow */
 503 };
 504
 505 /*
 506  * ELS_PRLO - Process logout request and response.
 507  */
 508 struct fc_els_prlo {
 509         __u8            prlo_cmd;       /* command */
 510         __u8            prlo_obs;       /* obsolete, but shall be set to 10h */
 511         __be16          prlo_len;       /* payload length */
 512 };
 513
 514 /*
 515  * ELS_ADISC payload
 516  */
 517 struct fc_els_adisc {
 518         __u8            adisc_cmd;
 519         __u8            adisc_resv[3];
 520         __u8            adisc_resv1;
 521         __u8            adisc_hard_addr[3];
 522         __be64          adisc_wwpn;
 523         __be64          adisc_wwnn;
 524         __u8            adisc_resv2;
 525         __u8            adisc_port_id[3];
 526 } __attribute__((__packed__));
 527
 528 /*
 529  * ELS_LOGO - process or fabric logout.
 530  */
 531 struct fc_els_logo {
 532         __u8            fl_cmd;         /* command code */
 533         __u8            fl_zero[3];     /* specified as zero - part of cmd */
 534         __u8            fl_resvd;       /* reserved */
 535         __u8            fl_n_port_id[3];/* N port ID */
 536         __be64          fl_n_port_wwn;  /* port name */
 537 };
 538
 539 /*
 540  * ELS_RTV - read timeout value.
 541  */
 542 struct fc_els_rtv {
 543         __u8            rtv_cmd;        /* command code 0x0e */
 544         __u8            rtv_zero[3];    /* specified as zero - part of cmd */
 545 };
 546
 547 /*
 548  * LS_ACC for ELS_RTV - read timeout value.
 549  */
 550 struct fc_els_rtv_acc {
 551         __u8            rtv_cmd;        /* command code 0x02 */
 552         __u8            rtv_zero[3];    /* specified as zero - part of cmd */
 553         __be32          rtv_r_a_tov;    /* resource allocation timeout value */
 554         __be32          rtv_e_d_tov;    /* error detection timeout value */
 555         __be32          rtv_toq;        /* timeout qualifier (see below) */
 556 };
 557
 558 /*
 559  * rtv_toq bits.
 560  */
 561 #define FC_ELS_RTV_EDRES (1 << 26)      /* E_D_TOV resolution is nS else mS */
 562 #define FC_ELS_RTV_RTTOV (1 << 19)      /* R_T_TOV is 100 uS else 100 mS */
 563
 564 /*
 565  * ELS_SCR - state change registration payload.
 566  */
 567 struct fc_els_scr {
 568         __u8            scr_cmd;        /* command code */
 569         __u8            scr_resv[6];    /* reserved */
 570         __u8            scr_reg_func;   /* registration function (see below) */
 571 };
 572
 573 enum fc_els_scr_func {
 574         ELS_SCRF_FAB =  1,      /* fabric-detected registration */
 575         ELS_SCRF_NPORT = 2,     /* Nx_Port-detected registration */
 576         ELS_SCRF_FULL = 3,      /* full registration */
 577         ELS_SCRF_CLEAR = 255,   /* remove any current registrations */
 578 };
 579
 580 /*
 581  * ELS_RSCN - registered state change notification payload.
 582  */
 583 struct fc_els_rscn {
 584         __u8            rscn_cmd;       /* RSCN opcode (0x61) */
 585         __u8            rscn_page_len;  /* page length (4) */
 586         __be16          rscn_plen;      /* payload length including this word */
 587
 588         /* followed by 4-byte generic affected Port_ID pages */
 589 };
 590
 591 struct fc_els_rscn_page {
 592         __u8            rscn_page_flags; /* event and address format */
 593         __u8            rscn_fid[3];    /* fabric ID */
 594 };
 595
 596 #define ELS_RSCN_EV_QUAL_BIT    2       /* shift count for event qualifier */
 597 #define ELS_RSCN_EV_QUAL_MASK   0xf     /* mask for event qualifier */
 598 #define ELS_RSCN_ADDR_FMT_BIT   0       /* shift count for address format */
 599 #define ELS_RSCN_ADDR_FMT_MASK  0x3     /* mask for address format */
 600
 601 enum fc_els_rscn_ev_qual {
 602         ELS_EV_QUAL_NONE = 0,           /* unspecified */
 603         ELS_EV_QUAL_NS_OBJ = 1,         /* changed name server object */
 604         ELS_EV_QUAL_PORT_ATTR = 2,      /* changed port attribute */
 605         ELS_EV_QUAL_SERV_OBJ = 3,       /* changed service object */
 606         ELS_EV_QUAL_SW_CONFIG = 4,      /* changed switch configuration */
 607         ELS_EV_QUAL_REM_OBJ = 5,        /* removed object */
 608 };
 609
 610 enum fc_els_rscn_addr_fmt {
 611         ELS_ADDR_FMT_PORT = 0,  /* rscn_fid is a port address */
 612         ELS_ADDR_FMT_AREA = 1,  /* rscn_fid is a area address */
 613         ELS_ADDR_FMT_DOM = 2,   /* rscn_fid is a domain address */
 614         ELS_ADDR_FMT_FAB = 3,   /* anything on fabric may have changed */
 615 };
 616
 617 /*
 618  * ELS_RNID - request Node ID.
 619  */
 620 struct fc_els_rnid {
 621         __u8            rnid_cmd;       /* RNID opcode (0x78) */
 622         __u8            rnid_resv[3];   /* reserved */
 623         __u8            rnid_fmt;       /* data format */
 624         __u8            rnid_resv2[3];  /* reserved */
 625 };
 626
 627 /*
 628  * Node Identification Data formats (rnid_fmt)
 629  */
 630 enum fc_els_rnid_fmt {
 631         ELS_RNIDF_NONE = 0,             /* no specific identification data */
 632         ELS_RNIDF_GEN = 0xdf,           /* general topology discovery format */
 633 };
 634
 635 /*
 636  * ELS_RNID response.
 637  */
 638 struct fc_els_rnid_resp {
 639         __u8            rnid_cmd;       /* response code (LS_ACC) */
 640         __u8            rnid_resv[3];   /* reserved */
 641         __u8            rnid_fmt;       /* data format */
 642         __u8            rnid_cid_len;   /* common ID data length */
 643         __u8            rnid_resv2;     /* reserved */
 644         __u8            rnid_sid_len;   /* specific ID data length */
 645 };
 646
 647 struct fc_els_rnid_cid {
 648         __be64          rnid_wwpn;      /* N port name */
 649         __be64          rnid_wwnn;      /* node name */
 650 };
 651
 652 struct fc_els_rnid_gen {
 653         __u8            rnid_vend_id[16]; /* vendor-unique ID */
 654         __be32          rnid_atype;     /* associated type (see below) */
 655         __be32          rnid_phys_port; /* physical port number */
 656         __be32          rnid_att_nodes; /* number of attached nodes */
 657         __u8            rnid_node_mgmt; /* node management (see below) */
 658         __u8            rnid_ip_ver;    /* IP version (see below) */
 659         __be16          rnid_prot_port; /* UDP / TCP port number */
 660         __be32          rnid_ip_addr[4]; /* IP address */
 661         __u8            rnid_resvd[2];  /* reserved */
 662         __be16          rnid_vend_spec; /* vendor-specific field */
 663 };
 664
 665 enum fc_els_rnid_atype {
 666         ELS_RNIDA_UNK =         0x01,   /* unknown */
 667         ELS_RNIDA_OTHER =       0x02,   /* none of the following */
 668         ELS_RNIDA_HUB =         0x03,
 669         ELS_RNIDA_SWITCH =      0x04,
 670         ELS_RNIDA_GATEWAY =     0x05,
 671         ELS_RNIDA_CONV =        0x06,   /* Obsolete, do not use this value */
 672         ELS_RNIDA_HBA =         0x07,   /* Obsolete, do not use this value */
 673         ELS_RNIDA_PROXY =       0x08,   /* Obsolete, do not use this value */
 674         ELS_RNIDA_STORAGE =     0x09,
 675         ELS_RNIDA_HOST =        0x0a,
 676         ELS_RNIDA_SUBSYS =      0x0b,   /* storage subsystem (e.g., RAID) */
 677         ELS_RNIDA_ACCESS =      0x0e,   /* access device (e.g. media changer) */
 678         ELS_RNIDA_NAS =         0x11,   /* NAS server */
 679         ELS_RNIDA_BRIDGE =      0x12,   /* bridge */
 680         ELS_RNIDA_VIRT =        0x13,   /* virtualization device */
 681         ELS_RNIDA_MF =          0xff,   /* multifunction device (bits below) */
 682         ELS_RNIDA_MF_HUB =      1UL << 31,      /* hub */
 683         ELS_RNIDA_MF_SW =       1UL << 30,      /* switch */
 684         ELS_RNIDA_MF_GW =       1UL << 29,      /* gateway */
 685         ELS_RNIDA_MF_ST =       1UL << 28,      /* storage */
 686         ELS_RNIDA_MF_HOST =     1UL << 27,      /* host */
 687         ELS_RNIDA_MF_SUB =      1UL << 26,      /* storage subsystem */
 688         ELS_RNIDA_MF_ACC =      1UL << 25,      /* storage access dev */
 689         ELS_RNIDA_MF_WDM =      1UL << 24,      /* wavelength division mux */
 690         ELS_RNIDA_MF_NAS =      1UL << 23,      /* NAS server */
 691         ELS_RNIDA_MF_BR =       1UL << 22,      /* bridge */
 692         ELS_RNIDA_MF_VIRT =     1UL << 21,      /* virtualization device */
 693 };
 694
 695 enum fc_els_rnid_mgmt {
 696         ELS_RNIDM_SNMP =        0,
 697         ELS_RNIDM_TELNET =      1,
 698         ELS_RNIDM_HTTP =        2,
 699         ELS_RNIDM_HTTPS =       3,
 700         ELS_RNIDM_XML =         4,      /* HTTP + XML */
 701 };
 702
 703 enum fc_els_rnid_ipver {
 704         ELS_RNIDIP_NONE =       0,      /* no IP support or node mgmt. */
 705         ELS_RNIDIP_V4 =         1,      /* IPv4 */
 706         ELS_RNIDIP_V6 =         2,      /* IPv6 */
 707 };
 708
 709 /*
 710  * ELS RPL - Read Port List.
 711  */
 712 struct fc_els_rpl {
 713         __u8            rpl_cmd;        /* command */
 714         __u8            rpl_resv[5];    /* reserved - must be zero */
 715         __be16          rpl_max_size;   /* maximum response size or zero */
 716         __u8            rpl_resv1;      /* reserved - must be zero */
 717         __u8            rpl_index[3];   /* starting index */
 718 };
 719
 720 /*
 721  * Port number block in RPL response.
 722  */
 723 struct fc_els_pnb {
 724         __be32          pnb_phys_pn;    /* physical port number */
 725         __u8            pnb_resv;       /* reserved */
 726         __u8            pnb_port_id[3]; /* port ID */
 727         __be64          pnb_wwpn;       /* port name */
 728 };
 729
 730 /*
 731  * RPL LS_ACC response.
 732  */
 733 struct fc_els_rpl_resp {
 734         __u8            rpl_cmd;        /* ELS_LS_ACC */
 735         __u8            rpl_resv1;      /* reserved - must be zero */
 736         __be16          rpl_plen;       /* payload length */
 737         __u8            rpl_resv2;      /* reserved - must be zero */
 738         __u8            rpl_llen[3];    /* list length */
 739         __u8            rpl_resv3;      /* reserved - must be zero */
 740         __u8            rpl_index[3];   /* starting index */
 741         struct fc_els_pnb rpl_pnb[1];   /* variable number of PNBs */
 742 };
 743
 744 /*
 745  * Link Error Status Block.
 746  */
 747 struct fc_els_lesb {
 748         __be32          lesb_link_fail; /* link failure count */
 749         __be32          lesb_sync_loss; /* loss of synchronization count */
 750         __be32          lesb_sig_loss;  /* loss of signal count */
 751         __be32          lesb_prim_err;  /* primitive sequence error count */
 752         __be32          lesb_inv_word;  /* invalid transmission word count */
 753         __be32          lesb_inv_crc;   /* invalid CRC count */
 754 };
 755
 756 /*
 757  * ELS RPS - Read Port Status Block request.
 758  */
 759 struct fc_els_rps {
 760         __u8            rps_cmd;        /* command */
 761         __u8            rps_resv[2];    /* reserved - must be zero */
 762         __u8            rps_flag;       /* flag - see below */
 763         __be64          rps_port_spec;  /* port selection */
 764 };
 765
 766 enum fc_els_rps_flag {
 767         FC_ELS_RPS_DID =        0x00,   /* port identified by D_ID of req. */
 768         FC_ELS_RPS_PPN =        0x01,   /* port_spec is physical port number */
 769         FC_ELS_RPS_WWPN =       0x02,   /* port_spec is port WWN */
 770 };
 771
 772 /*
 773  * ELS RPS LS_ACC response.
 774  */
 775 struct fc_els_rps_resp {
 776         __u8            rps_cmd;        /* command - LS_ACC */
 777         __u8            rps_resv[2];    /* reserved - must be zero */
 778         __u8            rps_flag;       /* flag - see below */
 779         __u8            rps_resv2[2];   /* reserved */
 780         __be16          rps_status;     /* port status - see below */
 781         struct fc_els_lesb rps_lesb;    /* link error status block */
 782 };
 783
 784 enum fc_els_rps_resp_flag {
 785         FC_ELS_RPS_LPEV =       0x01,   /* L_port extension valid */
 786 };
 787
 788 enum fc_els_rps_resp_status {
 789         FC_ELS_RPS_PTP =        1 << 5, /* point-to-point connection */
 790         FC_ELS_RPS_LOOP =       1 << 4, /* loop mode */
 791         FC_ELS_RPS_FAB =        1 << 3, /* fabric present */
 792         FC_ELS_RPS_NO_SIG =     1 << 2, /* loss of signal */
 793         FC_ELS_RPS_NO_SYNC =    1 << 1, /* loss of synchronization */
 794         FC_ELS_RPS_RESET =      1 << 0, /* in link reset protocol */
 795 };
 796
 797 /*
 798  * ELS LIRR - Link Incident Record Registration request.
 799  */
 800 struct fc_els_lirr {
 801         __u8            lirr_cmd;       /* command */
 802         __u8            lirr_resv[3];   /* reserved - must be zero */
 803         __u8            lirr_func;      /* registration function */
 804         __u8            lirr_fmt;       /* FC-4 type of RLIR requested */
 805         __u8            lirr_resv2[2];  /* reserved - must be zero */
 806 };
 807
 808 enum fc_els_lirr_func {
 809         ELS_LIRR_SET_COND =     0x01,   /* set - conditionally receive */
 810         ELS_LIRR_SET_UNCOND =   0x02,   /* set - unconditionally receive */
 811         ELS_LIRR_CLEAR =        0xff    /* clear registration */
 812 };
 813
 814 /*
 815  * ELS SRL - Scan Remote Loop request.
 816  */
 817 struct fc_els_srl {
 818         __u8            srl_cmd;        /* command */
 819         __u8            srl_resv[3];    /* reserved - must be zero */
 820         __u8            srl_flag;       /* flag - see below */
 821         __u8            srl_flag_param[3];      /* flag parameter */
 822 };
 823
 824 enum fc_els_srl_flag {
 825         FC_ELS_SRL_ALL =        0x00,   /* scan all FL ports */
 826         FC_ELS_SRL_ONE =        0x01,   /* scan specified loop */
 827         FC_ELS_SRL_EN_PER =     0x02,   /* enable periodic scanning (param) */
 828         FC_ELS_SRL_DIS_PER =    0x03,   /* disable periodic scanning */
 829 };
 830
 831 /*
 832  * ELS RLS - Read Link Error Status Block request.
 833  */
 834 struct fc_els_rls {
 835         __u8            rls_cmd;        /* command */
 836         __u8            rls_resv[4];    /* reserved - must be zero */
 837         __u8            rls_port_id[3]; /* port ID */
 838 };
 839
 840 /*
 841  * ELS RLS LS_ACC Response.
 842  */
 843 struct fc_els_rls_resp {
 844         __u8            rls_cmd;        /* ELS_LS_ACC */
 845         __u8            rls_resv[3];    /* reserved - must be zero */
 846         struct fc_els_lesb rls_lesb;    /* link error status block */
 847 };
 848
 849 /*
 850  * ELS RLIR - Registered Link Incident Report.
 851  * This is followed by the CLIR and the CLID, described below.
 852  */
 853 struct fc_els_rlir {
 854         __u8            rlir_cmd;       /* command */
 855         __u8            rlir_resv[3];   /* reserved - must be zero */
 856         __u8            rlir_fmt;       /* format (FC4-type if type specific) */
 857         __u8            rlir_clr_len;   /* common link incident record length */
 858         __u8            rlir_cld_len;   /* common link incident desc. length */
 859         __u8            rlir_slr_len;   /* spec. link incident record length */
 860 };
 861
 862 /*
 863  * CLIR - Common Link Incident Record Data. - Sent via RLIR.
 864  */
 865 struct fc_els_clir {
 866         __be64          clir_wwpn;      /* incident port name */
 867         __be64          clir_wwnn;      /* incident port node name */
 868         __u8            clir_port_type; /* incident port type */
 869         __u8            clir_port_id[3];        /* incident port ID */
 870
 871         __be64          clir_conn_wwpn; /* connected port name */
 872         __be64          clir_conn_wwnn; /* connected node name */
 873         __be64          clir_fab_name;  /* fabric name */
 874         __be32          clir_phys_port; /* physical port number */
 875         __be32          clir_trans_id;  /* transaction ID */
 876         __u8            clir_resv[3];   /* reserved */
 877         __u8            clir_ts_fmt;    /* time stamp format */
 878         __be64          clir_timestamp; /* time stamp */
 879 };
 880
 881 /*
 882  * CLIR clir_ts_fmt - time stamp format values.
 883  */
 884 enum fc_els_clir_ts_fmt {
 885         ELS_CLIR_TS_UNKNOWN =   0,      /* time stamp field unknown */
 886         ELS_CLIR_TS_SEC_FRAC =  1,      /* time in seconds and fractions */
 887         ELS_CLIR_TS_CSU =       2,      /* time in clock synch update format */
 888 };
 889
 890 /*
 891  * Common Link Incident Descriptor - sent via RLIR.
 892  */
 893 struct fc_els_clid {
 894         __u8            clid_iq;        /* incident qualifier flags */
 895         __u8            clid_ic;        /* incident code */
 896         __be16          clid_epai;      /* domain/area of ISL */
 897 };
 898
 899 /*
 900  * CLID incident qualifier flags.
 901  */
 902 enum fc_els_clid_iq {
 903         ELS_CLID_SWITCH =       0x20,   /* incident port is a switch node */
 904         ELS_CLID_E_PORT =       0x10,   /* incident is an ISL (E) port */
 905         ELS_CLID_SEV_MASK =     0x0c,   /* severity 2-bit field mask */
 906         ELS_CLID_SEV_INFO =     0x00,   /* report is informational */
 907         ELS_CLID_SEV_INOP =     0x08,   /* link not operational */
 908         ELS_CLID_SEV_DEG =      0x04,   /* link degraded but operational */
 909         ELS_CLID_LASER =        0x02,   /* subassembly is a laser */
 910         ELS_CLID_FRU =          0x01,   /* format can identify a FRU */
 911 };
 912
 913 /*
 914  * CLID incident code.
 915  */
 916 enum fc_els_clid_ic {
 917         ELS_CLID_IC_IMPL =      1,      /* implicit incident */
 918         ELS_CLID_IC_BER =       2,      /* bit-error-rate threshold exceeded */
 919         ELS_CLID_IC_LOS =       3,      /* loss of synch or signal */
 920         ELS_CLID_IC_NOS =       4,      /* non-operational primitive sequence */
 921         ELS_CLID_IC_PST =       5,      /* primitive sequence timeout */
 922         ELS_CLID_IC_INVAL =     6,      /* invalid primitive sequence */
 923         ELS_CLID_IC_LOOP_TO =   7,      /* loop initialization time out */
 924         ELS_CLID_IC_LIP =       8,      /* receiving LIP */
 925 };
 926
 927 /*
 928  * Link Integrity event types
 929  */
 930 enum fc_fpin_li_event_types {
 931         FPIN_LI_UNKNOWN =               0x0,
 932         FPIN_LI_LINK_FAILURE =          0x1,
 933         FPIN_LI_LOSS_OF_SYNC =          0x2,
 934         FPIN_LI_LOSS_OF_SIG =           0x3,
 935         FPIN_LI_PRIM_SEQ_ERR =          0x4,
 936         FPIN_LI_INVALID_TX_WD =         0x5,
 937         FPIN_LI_INVALID_CRC =           0x6,
 938         FPIN_LI_DEVICE_SPEC =           0xF,
 939 };
 940
 941 /*
 942  * Initializer useful for decoding table.
 943  * Please keep this in sync with the above definitions.
 944  */
 945 #define FC_FPIN_LI_EVT_TYPES_INIT {                                     \
 946         { FPIN_LI_UNKNOWN,              "Unknown" },                    \
 947         { FPIN_LI_LINK_FAILURE,         "Link Failure" },               \
 948         { FPIN_LI_LOSS_OF_SYNC,         "Loss of Synchronization" },    \
 949         { FPIN_LI_LOSS_OF_SIG,          "Loss of Signal" },             \
 950         { FPIN_LI_PRIM_SEQ_ERR,         "Primitive Sequence Protocol Error" }, \
 951         { FPIN_LI_INVALID_TX_WD,        "Invalid Transmission Word" },  \
 952         { FPIN_LI_INVALID_CRC,          "Invalid CRC" },                \
 953         { FPIN_LI_DEVICE_SPEC,          "Device Specific" },            \
 954 }
 955
 956 /*
 957  * Delivery event types
 958  */
 959 enum fc_fpin_deli_event_types {
 960         FPIN_DELI_UNKNOWN =             0x0,
 961         FPIN_DELI_TIMEOUT =             0x1,
 962         FPIN_DELI_UNABLE_TO_ROUTE =     0x2,
 963         FPIN_DELI_DEVICE_SPEC =         0xF,
 964 };
 965
 966 /*
 967  * Initializer useful for decoding table.
 968  * Please keep this in sync with the above definitions.
 969  */
 970 #define FC_FPIN_DELI_EVT_TYPES_INIT {                                   \
 971         { FPIN_DELI_UNKNOWN,            "Unknown" },                    \
 972         { FPIN_DELI_TIMEOUT,            "Timeout" },                    \
 973         { FPIN_DELI_UNABLE_TO_ROUTE,    "Unable to Route" },            \
 974         { FPIN_DELI_DEVICE_SPEC,        "Device Specific" },            \
 975 }
 976
 977 /*
 978  * Congestion event types
 979  */
 980 enum fc_fpin_congn_event_types {
 981         FPIN_CONGN_CLEAR =              0x0,
 982         FPIN_CONGN_LOST_CREDIT =        0x1,
 983         FPIN_CONGN_CREDIT_STALL =       0x2,
 984         FPIN_CONGN_OVERSUBSCRIPTION =   0x3,
 985         FPIN_CONGN_DEVICE_SPEC =        0xF,
 986 };
 987
 988 /*
 989  * Initializer useful for decoding table.
 990  * Please keep this in sync with the above definitions.
 991  */
 992 #define FC_FPIN_CONGN_EVT_TYPES_INIT {                                  \
 993         { FPIN_CONGN_CLEAR,             "Clear" },                      \
 994         { FPIN_CONGN_LOST_CREDIT,       "Lost Credit" },                \
 995         { FPIN_CONGN_CREDIT_STALL,      "Credit Stall" },               \
 996         { FPIN_CONGN_OVERSUBSCRIPTION,  "Oversubscription" },           \
 997         { FPIN_CONGN_DEVICE_SPEC,       "Device Specific" },            \
 998 }
 999
1000 enum fc_fpin_congn_severity_types {
1001         FPIN_CONGN_SEVERITY_WARNING =   0xF1,
1002         FPIN_CONGN_SEVERITY_ERROR =     0xF7,
1003 };
1004
1005 /*
1006  * Link Integrity Notification Descriptor
1007  */
1008 struct fc_fn_li_desc {
1009         __be32          desc_tag;       /* Descriptor Tag (0x00020001) */
1010         __be32          desc_len;       /* Length of Descriptor (in bytes).
1011                                          * Size of descriptor excluding
1012                                          * desc_tag and desc_len fields.
1013                                          */
1014         __be64          detecting_wwpn; /* Port Name that detected event */
1015         __be64          attached_wwpn;  /* Port Name of device attached to
1016                                          * detecting Port Name
1017                                          */
1018         __be16          event_type;     /* see enum fc_fpin_li_event_types */
1019         __be16          event_modifier; /* Implementation specific value
1020                                          * describing the event type
1021                                          */
1022         __be32          event_threshold;/* duration in ms of the link
1023                                          * integrity detection cycle
1024                                          */
1025         __be32          event_count;    /* minimum number of event
1026                                          * occurrences during the event
1027                                          * threshold to caause the LI event
1028                                          */
1029         __be32          pname_count;    /* number of portname_list elements */
1030         __be64          pname_list[];   /* list of N_Port_Names accessible
1031                                          * through the attached port
1032                                          */
1033 };
1034
1035 /*
1036  * Delivery Notification Descriptor
1037  */
1038 struct fc_fn_deli_desc {
1039         __be32          desc_tag;       /* Descriptor Tag (0x00020002) */
1040         __be32          desc_len;       /* Length of Descriptor (in bytes).
1041                                          * Size of descriptor excluding
1042                                          * desc_tag and desc_len fields.
1043                                          */
1044         __be64          detecting_wwpn; /* Port Name that detected event */
1045         __be64          attached_wwpn;  /* Port Name of device attached to
1046                                          * detecting Port Name
1047                                          */
1048         __be32          deli_reason_code;/* see enum fc_fpin_deli_event_types */
1049 };
1050
1051 /*
1052  * Peer Congestion Notification Descriptor
1053  */
1054 struct fc_fn_peer_congn_desc {
1055         __be32          desc_tag;       /* Descriptor Tag (0x00020003) */
1056         __be32          desc_len;       /* Length of Descriptor (in bytes).
1057                                          * Size of descriptor excluding
1058                                          * desc_tag and desc_len fields.
1059                                          */
1060         __be64          detecting_wwpn; /* Port Name that detected event */
1061         __be64          attached_wwpn;  /* Port Name of device attached to
1062                                          * detecting Port Name
1063                                          */
1064         __be16          event_type;     /* see enum fc_fpin_congn_event_types */
1065         __be16          event_modifier; /* Implementation specific value
1066                                          * describing the event type
1067                                          */
1068         __be32          event_period;   /* duration (ms) of the detected
1069                                          * congestion event
1070                                          */
1071         __be32          pname_count;    /* number of portname_list elements */
1072         __be64          pname_list[];   /* list of N_Port_Names accessible
1073                                          * through the attached port
1074                                          */
1075 };
1076
1077 /*
1078  * Congestion Notification Descriptor
1079  */
1080 struct fc_fn_congn_desc {
1081         __be32          desc_tag;       /* Descriptor Tag (0x00020004) */
1082         __be32          desc_len;       /* Length of Descriptor (in bytes).
1083                                          * Size of descriptor excluding
1084                                          * desc_tag and desc_len fields.
1085                                          */
1086         __be16          event_type;     /* see enum fc_fpin_congn_event_types */
1087         __be16          event_modifier; /* Implementation specific value
1088                                          * describing the event type
1089                                          */
1090         __be32          event_period;   /* duration (ms) of the detected
1091                                          * congestion event
1092                                          */
1093         __u8            severity;       /* command */
1094         __u8            resv[3];        /* reserved - must be zero */
1095 };
1096
1097 /*
1098  * ELS_FPIN - Fabric Performance Impact Notification
1099  */
1100 struct fc_els_fpin {
1101         __u8            fpin_cmd;       /* command (0x16) */
1102         __u8            fpin_zero[3];   /* specified as zero - part of cmd */
1103         __be32          desc_len;       /* Length of Descriptor List (in bytes).
1104                                          * Size of ELS excluding fpin_cmd,
1105                                          * fpin_zero and desc_len fields.
1106                                          */
1107         struct fc_tlv_desc      fpin_desc[];    /* Descriptor list */
1108 };
1109
1110 /* Diagnostic Function Descriptor - FPIN Registration */
1111 struct fc_df_desc_fpin_reg {
1112         __be32          desc_tag;       /* FPIN Registration (0x00030001) */
1113         __be32          desc_len;       /* Length of Descriptor (in bytes).
1114                                          * Size of descriptor excluding
1115                                          * desc_tag and desc_len fields.
1116                                          */
1117         __be32          count;          /* Number of desc_tags elements */
1118         __be32          desc_tags[];    /* Array of Descriptor Tags.
1119                                          * Each tag indicates a function
1120                                          * supported by the N_Port (request)
1121                                          * or by the  N_Port and Fabric
1122                                          * Controller (reply; may be a subset
1123                                          * of the request).
1124                                          * See ELS_FN_DTAG_xxx for tag values.
1125                                          */
1126 };
1127
1128 /*
1129  * ELS_RDF - Register Diagnostic Functions
1130  */
1131 struct fc_els_rdf {
1132         __u8            fpin_cmd;       /* command (0x19) */
1133         __u8            fpin_zero[3];   /* specified as zero - part of cmd */
1134         __be32          desc_len;       /* Length of Descriptor List (in bytes).
1135                                          * Size of ELS excluding fpin_cmd,
1136                                          * fpin_zero and desc_len fields.
1137                                          */
1138         struct fc_tlv_desc      desc[]; /* Descriptor list */
1139 };
1140
1141 /*
1142  * ELS RDF LS_ACC Response.
1143  */
1144 struct fc_els_rdf_resp {
1145         struct fc_els_ls_acc    acc_hdr;
1146         __be32                  desc_list_len;  /* Length of response (in
1147                                                  * bytes). Excludes acc_hdr
1148                                                  * and desc_list_len fields.
1149                                                  */
1150         struct fc_els_lsri_desc lsri;
1151         struct fc_tlv_desc      desc[]; /* Supported Descriptor list */
1152 };
1153
1154
1155 /*
1156  * Diagnostic Capability Descriptors for EDC ELS
1157  */
1158
1159 /*
1160  * Diagnostic: Link Fault Capability Descriptor
1161  */
1162 struct fc_diag_lnkflt_desc {
1163         __be32          desc_tag;       /* Descriptor Tag (0x0001000D) */
1164         __be32          desc_len;       /* Length of Descriptor (in bytes).
1165                                          * Size of descriptor excluding
1166                                          * desc_tag and desc_len fields.
1167                                          * 12 bytes
1168                                          */
1169         __be32          degrade_activate_threshold;
1170         __be32          degrade_deactivate_threshold;
1171         __be32          fec_degrade_interval;
1172 };
1173
1174 enum fc_edc_cg_signal_cap_types {
1175         /* Note: Capability: bits 31:4 Rsvd; bits 3:0 are capabilities */
1176         EDC_CG_SIG_NOTSUPPORTED =       0x00, /* neither supported */
1177         EDC_CG_SIG_WARN_ONLY =          0x01,
1178         EDC_CG_SIG_WARN_ALARM =         0x02, /* both supported */
1179 };
1180
1181 /*
1182  * Initializer useful for decoding table.
1183  * Please keep this in sync with the above definitions.
1184  */
1185 #define FC_EDC_CG_SIGNAL_CAP_TYPES_INIT {                               \
1186         { EDC_CG_SIG_NOTSUPPORTED,      "Signaling Not Supported" },    \
1187         { EDC_CG_SIG_WARN_ONLY,         "Warning Signal" },             \
1188         { EDC_CG_SIG_WARN_ALARM,        "Warning and Alarm Signals" },  \
1189 }
1190
1191 enum fc_diag_cg_sig_freq_types {
1192         EDC_CG_SIGFREQ_CNT_MIN =        1,      /* Min Frequency Count */
1193         EDC_CG_SIGFREQ_CNT_MAX =        999,    /* Max Frequency Count */
1194
1195         EDC_CG_SIGFREQ_SEC =            0x1,    /* Units: seconds */
1196         EDC_CG_SIGFREQ_MSEC =           0x2,    /* Units: milliseconds */
1197 };
1198
1199 struct fc_diag_cg_sig_freq {
1200         __be16          count;          /* Time between signals
1201                                          * note: upper 6 bits rsvd
1202                                          */
1203         __be16          units;          /* Time unit for count
1204                                          * note: upper 12 bits rsvd
1205                                          */
1206 };
1207
1208 /*
1209  * Diagnostic: Congestion Signaling Capability Descriptor
1210  */
1211 struct fc_diag_cg_sig_desc {
1212         __be32          desc_tag;       /* Descriptor Tag (0x0001000F) */
1213         __be32          desc_len;       /* Length of Descriptor (in bytes).
1214                                          * Size of descriptor excluding
1215                                          * desc_tag and desc_len fields.
1216                                          * 16 bytes
1217                                          */
1218         __be32                          xmt_signal_capability;
1219         struct fc_diag_cg_sig_freq      xmt_signal_frequency;
1220         __be32                          rcv_signal_capability;
1221         struct fc_diag_cg_sig_freq      rcv_signal_frequency;
1222 };
1223
1224 /*
1225  * ELS_EDC - Exchange Diagnostic Capabilities
1226  */
1227 struct fc_els_edc {
1228         __u8            edc_cmd;        /* command (0x17) */
1229         __u8            edc_zero[3];    /* specified as zero - part of cmd */
1230         __be32          desc_len;       /* Length of Descriptor List (in bytes).
1231                                          * Size of ELS excluding edc_cmd,
1232                                          * edc_zero and desc_len fields.
1233                                          */
1234         struct fc_tlv_desc      desc[];
1235                                         /* Diagnostic Descriptor list */
1236 };
1237
1238 /*
1239  * ELS EDC LS_ACC Response.
1240  */
1241 struct fc_els_edc_resp {
1242         struct fc_els_ls_acc    acc_hdr;
1243         __be32                  desc_list_len;  /* Length of response (in
1244                                                  * bytes). Excludes acc_hdr
1245                                                  * and desc_list_len fields.
1246                                                  */
1247         struct fc_els_lsri_desc lsri;
1248         struct fc_tlv_desc      desc[];
1249                                     /* Supported Diagnostic Descriptor list */
1250 };
1251
1252
1253 #endif /* _FC_ELS_H_ */