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/*

 * 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_ELS_H_

#define _FC_ELS_H_

#include <linux/types.h>

/*

 * Fibre Channel Switch - Enhanced Link Services definitions.

 * From T11 FC-LS Rev 1.2 June 7, 2005.

 */

/*

 * ELS Command codes - byte 0 of the frame payload

 */

enum fc_els_cmd {

        ELS_LS_RJT =    0x01,   /* ESL reject */

        ELS_LS_ACC =    0x02,   /* ESL Accept */

        ELS_PLOGI =     0x03,   /* N_Port login */

        ELS_FLOGI =     0x04,   /* F_Port login */

        ELS_LOGO =      0x05,   /* Logout */

        ELS_ABTX =      0x06,   /* Abort exchange - obsolete */

        ELS_RCS =       0x07,   /* read connection status */

        ELS_RES =       0x08,   /* read exchange status block */

        ELS_RSS =       0x09,   /* read sequence status block */

        ELS_RSI =       0x0a,   /* read sequence initiative */

        ELS_ESTS =      0x0b,   /* establish streaming */

        ELS_ESTC =      0x0c,   /* estimate credit */

        ELS_ADVC =      0x0d,   /* advise credit */

        ELS_RTV =       0x0e,   /* read timeout value */

        ELS_RLS =       0x0f,   /* read link error status block */

        ELS_ECHO =      0x10,   /* echo */

        ELS_TEST =      0x11,   /* test */

        ELS_RRQ =       0x12,   /* reinstate recovery qualifier */

        ELS_REC =       0x13,   /* read exchange concise */

        ELS_SRR =       0x14,   /* sequence retransmission request */

        ELS_PRLI =      0x20,   /* process login */

        ELS_PRLO =      0x21,   /* process logout */

        ELS_SCN =       0x22,   /* state change notification */

        ELS_TPLS =      0x23,   /* test process login state */

        ELS_TPRLO =     0x24,   /* third party process logout */

        ELS_LCLM =      0x25,   /* login control list mgmt (obs) */

        ELS_GAID =      0x30,   /* get alias_ID */

        ELS_FACT =      0x31,   /* fabric activate alias_id */

        ELS_FDACDT =    0x32,   /* fabric deactivate alias_id */

        ELS_NACT =      0x33,   /* N-port activate alias_id */

        ELS_NDACT =     0x34,   /* N-port deactivate alias_id */

        ELS_QOSR =      0x40,   /* quality of service request */

        ELS_RVCS =      0x41,   /* read virtual circuit status */

        ELS_PDISC =     0x50,   /* discover N_port service params */

        ELS_FDISC =     0x51,   /* discover F_port service params */

        ELS_ADISC =     0x52,   /* discover address */

        ELS_RNC =       0x53,   /* report node cap (obs) */

        ELS_FARP_REQ =  0x54,   /* FC ARP request */

        ELS_FARP_REPL = 0x55,   /* FC ARP reply */

        ELS_RPS =       0x56,   /* read port status block */

        ELS_RPL =       0x57,   /* read port list */

        ELS_RPBC =      0x58,   /* read port buffer condition */

        ELS_FAN =       0x60,   /* fabric address notification */

        ELS_RSCN =      0x61,   /* registered state change notification */

        ELS_SCR =       0x62,   /* state change registration */

        ELS_RNFT =      0x63,   /* report node FC-4 types */

        ELS_CSR =       0x68,   /* clock synch. request */

        ELS_CSU =       0x69,   /* clock synch. update */

        ELS_LINIT =     0x70,   /* loop initialize */

        ELS_LSTS =      0x72,   /* loop status */

        ELS_RNID =      0x78,   /* request node ID data */

        ELS_RLIR =      0x79,   /* registered link incident report */

        ELS_LIRR =      0x7a,   /* link incident record registration */

        ELS_SRL =       0x7b,   /* scan remote loop */

        ELS_SBRP =      0x7c,   /* set bit-error reporting params */

        ELS_RPSC =      0x7d,   /* report speed capabilities */

        ELS_QSA =       0x7e,   /* query security attributes */

        ELS_EVFP =      0x7f,   /* exchange virt. fabrics params */

        ELS_LKA =       0x80,   /* link keep-alive */

        ELS_AUTH_ELS =  0x90,   /* authentication ELS */

};

/*

 * Initializer useful for decoding table.

 * Please keep this in sync with the above definitions.

 */

#define FC_ELS_CMDS_INIT {                      \

        [ELS_LS_RJT] =  "LS_RJT",               \

        [ELS_LS_ACC] =  "LS_ACC",               \

        [ELS_PLOGI] =   "PLOGI",                \

        [ELS_FLOGI] =   "FLOGI",                \

        [ELS_LOGO] =    "LOGO",                 \

        [ELS_ABTX] =    "ABTX",                 \

        [ELS_RCS] =     "RCS",                  \

        [ELS_RES] =     "RES",                  \

        [ELS_RSS] =     "RSS",                  \

        [ELS_RSI] =     "RSI",                  \

        [ELS_ESTS] =    "ESTS",                 \

        [ELS_ESTC] =    "ESTC",                 \

        [ELS_ADVC] =    "ADVC",                 \

        [ELS_RTV] =     "RTV",                  \

        [ELS_RLS] =     "RLS",                  \

        [ELS_ECHO] =    "ECHO",                 \

        [ELS_TEST] =    "TEST",                 \

        [ELS_RRQ] =     "RRQ",                  \

        [ELS_REC] =     "REC",                  \

        [ELS_SRR] =     "SRR",                  \

        [ELS_PRLI] =    "PRLI",                 \

        [ELS_PRLO] =    "PRLO",                 \

        [ELS_SCN] =     "SCN",                  \

        [ELS_TPLS] =    "TPLS",                 \

        [ELS_TPRLO] =   "TPRLO",                \

        [ELS_LCLM] =    "LCLM",                 \

        [ELS_GAID] =    "GAID",                 \

        [ELS_FACT] =    "FACT",                 \

        [ELS_FDACDT] =  "FDACDT",               \

        [ELS_NACT] =    "NACT",                 \

        [ELS_NDACT] =   "NDACT",                \

        [ELS_QOSR] =    "QOSR",                 \

        [ELS_RVCS] =    "RVCS",                 \

        [ELS_PDISC] =   "PDISC",                \

        [ELS_FDISC] =   "FDISC",                \

        [ELS_ADISC] =   "ADISC",                \

        [ELS_RNC] =     "RNC",                  \

        [ELS_FARP_REQ] = "FARP_REQ",            \

        [ELS_FARP_REPL] =  "FARP_REPL",         \

        [ELS_RPS] =     "RPS",                  \

        [ELS_RPL] =     "RPL",                  \

        [ELS_RPBC] =    "RPBC",                 \

        [ELS_FAN] =     "FAN",                  \

        [ELS_RSCN] =    "RSCN",                 \

        [ELS_SCR] =     "SCR",                  \

        [ELS_RNFT] =    "RNFT",                 \

        [ELS_CSR] =     "CSR",                  \

        [ELS_CSU] =     "CSU",                  \

        [ELS_LINIT] =   "LINIT",                \

        [ELS_LSTS] =    "LSTS",                 \

        [ELS_RNID] =    "RNID",                 \

        [ELS_RLIR] =    "RLIR",                 \

        [ELS_LIRR] =    "LIRR",                 \

        [ELS_SRL] =     "SRL",                  \

        [ELS_SBRP] =    "SBRP",                 \

        [ELS_RPSC] =    "RPSC",                 \

        [ELS_QSA] =     "QSA",                  \

        [ELS_EVFP] =    "EVFP",                 \

        [ELS_LKA] =     "LKA",                  \

        [ELS_AUTH_ELS] = "AUTH_ELS",            \

}

/*

 * LS_ACC payload.

 */

struct fc_els_ls_acc {

        __u8          la_cmd;           /* command code ELS_LS_ACC */

        __u8          la_resv[3];       /* reserved */

};

/*

 * ELS reject payload.

 */

struct fc_els_ls_rjt {

        __u8    er_cmd;         /* command code ELS_LS_RJT */

        __u8    er_resv[4];     /* reserved must be zero */

        __u8    er_reason;      /* reason (enum fc_els_rjt_reason below) */

        __u8    er_explan;      /* explanation (enum fc_els_rjt_explan below) */

        __u8    er_vendor;      /* vendor specific code */

};

/*

 * ELS reject reason codes (er_reason).

 */

enum fc_els_rjt_reason {

        ELS_RJT_NONE =          0,       /* no reject - not to be sent */

        ELS_RJT_INVAL =         0x01,   /* invalid ELS command code */

        ELS_RJT_LOGIC =         0x03,   /* logical error */

        ELS_RJT_BUSY =          0x05,   /* logical busy */

        ELS_RJT_PROT =          0x07,   /* protocol error */

        ELS_RJT_UNAB =          0x09,   /* unable to perform command request */

        ELS_RJT_UNSUP =         0x0b,   /* command not supported */

        ELS_RJT_INPROG =        0x0e,   /* command already in progress */

        ELS_RJT_FIP =           0x20,   /* FIP error */

        ELS_RJT_VENDOR =        0xff,   /* vendor specific error */

};

/*

 * reason code explanation (er_explan).

 */

enum fc_els_rjt_explan {

        ELS_EXPL_NONE =         0x00,   /* No additional explanation */

        ELS_EXPL_SPP_OPT_ERR =  0x01,   /* service parameter error - options */

        ELS_EXPL_SPP_ICTL_ERR = 0x03,   /* service parm error - initiator ctl */

        ELS_EXPL_AH =           0x11,   /* invalid association header */

        ELS_EXPL_AH_REQ =       0x13,   /* association_header required */

        ELS_EXPL_SID =          0x15,   /* invalid originator S_ID */

        ELS_EXPL_OXID_RXID =    0x17,   /* invalid OX_ID-RX_ID combination */

        ELS_EXPL_INPROG =       0x19,   /* Request already in progress */

        ELS_EXPL_PLOGI_REQD =   0x1e,   /* N_Port login required */

        ELS_EXPL_INSUF_RES =    0x29,   /* insufficient resources */

        ELS_EXPL_UNAB_DATA =    0x2a,   /* unable to supply requested data */

        ELS_EXPL_UNSUPR =       0x2c,   /* Request not supported */

        ELS_EXPL_INV_LEN =      0x2d,   /* Invalid payload length */

        ELS_EXPL_NOT_NEIGHBOR = 0x62,   /* VN2VN_Port not in neighbor set */

        /* TBD - above definitions incomplete */

};

/*

 * Common service parameters (N ports).

 */

struct fc_els_csp {

        __u8            sp_hi_ver;      /* highest version supported (obs.) */

        __u8            sp_lo_ver;      /* highest version supported (obs.) */

        __be16          sp_bb_cred;     /* buffer-to-buffer credits */

        __be16          sp_features;    /* common feature flags */

        __be16          sp_bb_data;     /* b-b state number and data field sz */

        union {

                struct {

                        __be16  _sp_tot_seq; /* total concurrent sequences */

                        __be16  _sp_rel_off; /* rel. offset by info cat */

                } sp_plogi;

                struct {

                        __be32  _sp_r_a_tov; /* resource alloc. timeout msec */

                } sp_flogi_acc;

        } sp_u;

        __be32          sp_e_d_tov;     /* error detect timeout value */

};

#define sp_tot_seq      sp_u.sp_plogi._sp_tot_seq

#define sp_rel_off      sp_u.sp_plogi._sp_rel_off

#define sp_r_a_tov      sp_u.sp_flogi_acc._sp_r_a_tov

#define FC_SP_BB_DATA_MASK 0xfff /* mask for data field size in sp_bb_data */

/*

 * Minimum and maximum values for max data field size in service parameters.

 */

#define FC_SP_MIN_MAX_PAYLOAD   FC_MIN_MAX_PAYLOAD

#define FC_SP_MAX_MAX_PAYLOAD   FC_MAX_PAYLOAD

/*

 * sp_features

 */

#define FC_SP_FT_NPIV   0x8000  /* multiple N_Port_ID support (FLOGI) */

#define FC_SP_FT_CIRO   0x8000  /* continuously increasing rel off (PLOGI) */

#define FC_SP_FT_CLAD   0x8000  /* clean address (in FLOGI LS_ACC) */

#define FC_SP_FT_RAND   0x4000  /* random relative offset */

#define FC_SP_FT_VAL    0x2000  /* valid vendor version level */

#define FC_SP_FT_NPIV_ACC       0x2000  /* NPIV assignment (FLOGI LS_ACC) */

#define FC_SP_FT_FPORT  0x1000  /* F port (1) vs. N port (0) */

#define FC_SP_FT_ABB    0x0800  /* alternate BB_credit management */

#define FC_SP_FT_EDTR   0x0400  /* E_D_TOV Resolution is nanoseconds */

#define FC_SP_FT_MCAST  0x0200  /* multicast */

#define FC_SP_FT_BCAST  0x0100  /* broadcast */

#define FC_SP_FT_HUNT   0x0080  /* hunt group */

#define FC_SP_FT_SIMP   0x0040  /* dedicated simplex */

#define FC_SP_FT_SEC    0x0020  /* reserved for security */

#define FC_SP_FT_CSYN   0x0010  /* clock synch. supported */

#define FC_SP_FT_RTTOV  0x0008  /* R_T_TOV value 100 uS, else 100 mS */

#define FC_SP_FT_HALF   0x0004  /* dynamic half duplex */

#define FC_SP_FT_SEQC   0x0002  /* SEQ_CNT */

#define FC_SP_FT_PAYL   0x0001  /* FLOGI payload length 256, else 116 */

/*

 * Class-specific service parameters.

 */

struct fc_els_cssp {

        __be16          cp_class;       /* class flags */

        __be16          cp_init;        /* initiator flags */

        __be16          cp_recip;       /* recipient flags */

        __be16          cp_rdfs;        /* receive data field size */

        __be16          cp_con_seq;     /* concurrent sequences */

        __be16          cp_ee_cred;     /* N-port end-to-end credit */

        __u8            cp_resv1;       /* reserved */

        __u8            cp_open_seq;    /* open sequences per exchange */

        __u8            _cp_resv2[2];   /* reserved */

};

/*

 * cp_class flags.

 */

#define FC_CPC_VALID    0x8000          /* class valid */

#define FC_CPC_IMIX     0x4000          /* intermix mode */

#define FC_CPC_SEQ      0x0800          /* sequential delivery */

#define FC_CPC_CAMP     0x0200          /* camp-on */

#define FC_CPC_PRI      0x0080          /* priority */

/*

 * cp_init flags.

 * (TBD: not all flags defined here).

 */

#define FC_CPI_CSYN     0x0010          /* clock synch. capable */

/*

 * cp_recip flags.

 */

#define FC_CPR_CSYN     0x0008          /* clock synch. capable */

/*

 * NFC_ELS_FLOGI: Fabric login request.

 * NFC_ELS_PLOGI: Port login request (same format).

 */

struct fc_els_flogi {

        __u8            fl_cmd;         /* command */

        __u8            _fl_resvd[3];   /* must be zero */

        struct fc_els_csp fl_csp;       /* common service parameters */

        __be64          fl_wwpn;        /* port name */

        __be64          fl_wwnn;        /* node name */

        struct fc_els_cssp fl_cssp[4];  /* class 1-4 service parameters */

        __u8            fl_vend[16];    /* vendor version level */

} __attribute__((__packed__));

/*

 * Process login service parameter page.

 */

struct fc_els_spp {

        __u8            spp_type;       /* type code or common service params */

        __u8            spp_type_ext;   /* type code extension */

        __u8            spp_flags;

        __u8            _spp_resvd;

        __be32          spp_orig_pa;    /* originator process associator */

        __be32          spp_resp_pa;    /* responder process associator */

        __be32          spp_params;     /* service parameters */

};

/*

 * spp_flags.

 */

#define FC_SPP_OPA_VAL      0x80        /* originator proc. assoc. valid */

#define FC_SPP_RPA_VAL      0x40        /* responder proc. assoc. valid */

#define FC_SPP_EST_IMG_PAIR 0x20        /* establish image pair */

#define FC_SPP_RESP_MASK    0x0f        /* mask for response code (below) */

/*

 * SPP response code in spp_flags - lower 4 bits.

 */

enum fc_els_spp_resp {

        FC_SPP_RESP_ACK =       1,      /* request executed */

        FC_SPP_RESP_RES =       2,      /* unable due to lack of resources */

        FC_SPP_RESP_INIT =      3,      /* initialization not complete */

        FC_SPP_RESP_NO_PA =     4,      /* unknown process associator */

        FC_SPP_RESP_CONF =      5,      /* configuration precludes image pair */

        FC_SPP_RESP_COND =      6,      /* request completed conditionally */

        FC_SPP_RESP_MULT =      7,      /* unable to handle multiple SPPs */

        FC_SPP_RESP_INVL =      8,      /* SPP is invalid */

};

/*

 * ELS_RRQ - Reinstate Recovery Qualifier

 */

struct fc_els_rrq {

        __u8            rrq_cmd;        /* command (0x12) */

        __u8            rrq_zero[3];    /* specified as zero - part of cmd */

        __u8            rrq_resvd;      /* reserved */

        __u8            rrq_s_id[3];    /* originator FID */

        __be16          rrq_ox_id;      /* originator exchange ID */

        __be16          rrq_rx_id;      /* responders exchange ID */

};

/*

 * ELS_REC - Read exchange concise.

 */

struct fc_els_rec {

        __u8            rec_cmd;        /* command (0x13) */

        __u8            rec_zero[3];    /* specified as zero - part of cmd */

        __u8            rec_resvd;      /* reserved */

        __u8            rec_s_id[3];    /* originator FID */

        __be16          rec_ox_id;      /* originator exchange ID */

        __be16          rec_rx_id;      /* responders exchange ID */

};

/*

 * ELS_REC LS_ACC payload.

 */

struct fc_els_rec_acc {

        __u8            reca_cmd;       /* accept (0x02) */

        __u8            reca_zero[3];   /* specified as zero - part of cmd */

        __be16          reca_ox_id;     /* originator exchange ID */

        __be16          reca_rx_id;     /* responders exchange ID */

        __u8            reca_resvd1;    /* reserved */

        __u8            reca_ofid[3];   /* originator FID */

        __u8            reca_resvd2;    /* reserved */

        __u8            reca_rfid[3];   /* responder FID */

        __be32          reca_fc4value;  /* FC4 value */

        __be32          reca_e_stat;    /* ESB (exchange status block) status */

};

/*

 * ELS_PRLI - Process login request and response.

 */

struct fc_els_prli {

        __u8            prli_cmd;       /* command */

        __u8            prli_spp_len;   /* length of each serv. parm. page */

        __be16          prli_len;       /* length of entire payload */

        /* service parameter pages follow */

};

/*

 * ELS_PRLO - Process logout request and response.

 */

struct fc_els_prlo {

        __u8            prlo_cmd;       /* command */

        __u8            prlo_obs;       /* obsolete, but shall be set to 10h */

        __be16          prlo_len;       /* payload length */

};

/*

 * ELS_ADISC payload

 */

struct fc_els_adisc {

        __u8            adisc_cmd;

        __u8            adisc_resv[3];

        __u8            adisc_resv1;

        __u8            adisc_hard_addr[3];

        __be64          adisc_wwpn;

        __be64          adisc_wwnn;

        __u8            adisc_resv2;

        __u8            adisc_port_id[3];

} __attribute__((__packed__));

/*

 * ELS_LOGO - process or fabric logout.

 */

struct fc_els_logo {

        __u8            fl_cmd;         /* command code */

        __u8            fl_zero[3];     /* specified as zero - part of cmd */

        __u8            fl_resvd;       /* reserved */

        __u8            fl_n_port_id[3];/* N port ID */

        __be64          fl_n_port_wwn;  /* port name */

};

/*

 * ELS_RTV - read timeout value.

 */

struct fc_els_rtv {

        __u8            rtv_cmd;        /* command code 0x0e */

        __u8            rtv_zero[3];    /* specified as zero - part of cmd */

};

/*

 * LS_ACC for ELS_RTV - read timeout value.

 */

struct fc_els_rtv_acc {

        __u8            rtv_cmd;        /* command code 0x02 */

        __u8            rtv_zero[3];    /* specified as zero - part of cmd */

        __be32          rtv_r_a_tov;    /* resource allocation timeout value */

        __be32          rtv_e_d_tov;    /* error detection timeout value */

        __be32          rtv_toq;        /* timeout qualifier (see below) */

};

/*

 * rtv_toq bits.

 */

#define FC_ELS_RTV_EDRES (1 << 26)      /* E_D_TOV resolution is nS else mS */

#define FC_ELS_RTV_RTTOV (1 << 19)      /* R_T_TOV is 100 uS else 100 mS */

/*

 * ELS_SCR - state change registration payload.

 */

struct fc_els_scr {

        __u8            scr_cmd;        /* command code */

        __u8            scr_resv[6];    /* reserved */

        __u8            scr_reg_func;   /* registration function (see below) */

};

enum fc_els_scr_func {

        ELS_SCRF_FAB =  1,      /* fabric-detected registration */

        ELS_SCRF_NPORT = 2,     /* Nx_Port-detected registration */

        ELS_SCRF_FULL = 3,      /* full registration */

        ELS_SCRF_CLEAR = 255,   /* remove any current registrations */

};

/*

 * ELS_RSCN - registered state change notification payload.

 */

struct fc_els_rscn {

        __u8            rscn_cmd;       /* RSCN opcode (0x61) */

        __u8            rscn_page_len;  /* page length (4) */

        __be16          rscn_plen;      /* payload length including this word */

        /* followed by 4-byte generic affected Port_ID pages */

};

struct fc_els_rscn_page {

        __u8            rscn_page_flags; /* event and address format */

        __u8            rscn_fid[3];    /* fabric ID */

};

#define ELS_RSCN_EV_QUAL_BIT    2       /* shift count for event qualifier */

#define ELS_RSCN_EV_QUAL_MASK   0xf     /* mask for event qualifier */

#define ELS_RSCN_ADDR_FMT_BIT   0        /* shift count for address format */

#define ELS_RSCN_ADDR_FMT_MASK  0x3     /* mask for address format */

enum fc_els_rscn_ev_qual {

        ELS_EV_QUAL_NONE = 0,            /* unspecified */

        ELS_EV_QUAL_NS_OBJ = 1,         /* changed name server object */

        ELS_EV_QUAL_PORT_ATTR = 2,      /* changed port attribute */

        ELS_EV_QUAL_SERV_OBJ = 3,       /* changed service object */

        ELS_EV_QUAL_SW_CONFIG = 4,      /* changed switch configuration */

        ELS_EV_QUAL_REM_OBJ = 5,        /* removed object */

};

enum fc_els_rscn_addr_fmt {

        ELS_ADDR_FMT_PORT = 0,   /* rscn_fid is a port address */

        ELS_ADDR_FMT_AREA = 1,  /* rscn_fid is a area address */

        ELS_ADDR_FMT_DOM = 2,   /* rscn_fid is a domain address */

        ELS_ADDR_FMT_FAB = 3,   /* anything on fabric may have changed */

};

/*

 * ELS_RNID - request Node ID.

 */

struct fc_els_rnid {

        __u8            rnid_cmd;       /* RNID opcode (0x78) */

        __u8            rnid_resv[3];   /* reserved */

        __u8            rnid_fmt;       /* data format */

        __u8            rnid_resv2[3];  /* reserved */

};

/*

 * Node Identification Data formats (rnid_fmt)

 */

enum fc_els_rnid_fmt {

        ELS_RNIDF_NONE = 0,              /* no specific identification data */

        ELS_RNIDF_GEN = 0xdf,           /* general topology discovery format */

};

/*

 * ELS_RNID response.

 */

struct fc_els_rnid_resp {

        __u8            rnid_cmd;       /* response code (LS_ACC) */

        __u8            rnid_resv[3];   /* reserved */

        __u8            rnid_fmt;       /* data format */

        __u8            rnid_cid_len;   /* common ID data length */

        __u8            rnid_resv2;     /* reserved */

        __u8            rnid_sid_len;   /* specific ID data length */

};

struct fc_els_rnid_cid {

        __be64          rnid_wwpn;      /* N port name */

        __be64          rnid_wwnn;      /* node name */

};

struct fc_els_rnid_gen {

        __u8            rnid_vend_id[16]; /* vendor-unique ID */

        __be32          rnid_atype;     /* associated type (see below) */

        __be32          rnid_phys_port; /* physical port number */

        __be32          rnid_att_nodes; /* number of attached nodes */

        __u8            rnid_node_mgmt; /* node management (see below) */

        __u8            rnid_ip_ver;    /* IP version (see below) */

        __be16          rnid_prot_port; /* UDP / TCP port number */

        __be32          rnid_ip_addr[4]; /* IP address */

        __u8            rnid_resvd[2];  /* reserved */

        __be16          rnid_vend_spec; /* vendor-specific field */

};

enum fc_els_rnid_atype {

        ELS_RNIDA_UNK =         0x01,   /* unknown */

        ELS_RNIDA_OTHER =       0x02,   /* none of the following */

        ELS_RNIDA_HUB =         0x03,

        ELS_RNIDA_SWITCH =      0x04,

        ELS_RNIDA_GATEWAY =     0x05,

        ELS_RNIDA_CONV =        0x06,   /* Obsolete, do not use this value */

        ELS_RNIDA_HBA =         0x07,   /* Obsolete, do not use this value */

        ELS_RNIDA_PROXY =       0x08,   /* Obsolete, do not use this value */

        ELS_RNIDA_STORAGE =     0x09,

        ELS_RNIDA_HOST =        0x0a,

        ELS_RNIDA_SUBSYS =      0x0b,   /* storage subsystem (e.g., RAID) */

        ELS_RNIDA_ACCESS =      0x0e,   /* access device (e.g. media changer) */

        ELS_RNIDA_NAS =         0x11,   /* NAS server */

        ELS_RNIDA_BRIDGE =      0x12,   /* bridge */

        ELS_RNIDA_VIRT =        0x13,   /* virtualization device */

        ELS_RNIDA_MF =          0xff,   /* multifunction device (bits below) */

        ELS_RNIDA_MF_HUB =      1UL << 31,      /* hub */

        ELS_RNIDA_MF_SW =       1UL << 30,      /* switch */

        ELS_RNIDA_MF_GW =       1UL << 29,      /* gateway */

        ELS_RNIDA_MF_ST =       1UL << 28,      /* storage */

        ELS_RNIDA_MF_HOST =     1UL << 27,      /* host */

        ELS_RNIDA_MF_SUB =      1UL << 26,      /* storage subsystem */

        ELS_RNIDA_MF_ACC =      1UL << 25,      /* storage access dev */

        ELS_RNIDA_MF_WDM =      1UL << 24,      /* wavelength division mux */

        ELS_RNIDA_MF_NAS =      1UL << 23,      /* NAS server */

        ELS_RNIDA_MF_BR =       1UL << 22,      /* bridge */

        ELS_RNIDA_MF_VIRT =     1UL << 21,      /* virtualization device */

};

enum fc_els_rnid_mgmt {

        ELS_RNIDM_SNMP =        0,

        ELS_RNIDM_TELNET =      1,

        ELS_RNIDM_HTTP =        2,

        ELS_RNIDM_HTTPS =       3,

        ELS_RNIDM_XML =         4,      /* HTTP + XML */

};

enum fc_els_rnid_ipver {

        ELS_RNIDIP_NONE =       0,       /* no IP support or node mgmt. */

        ELS_RNIDIP_V4 =         1,      /* IPv4 */

        ELS_RNIDIP_V6 =         2,      /* IPv6 */

};

/*

 * ELS RPL - Read Port List.

 */

struct fc_els_rpl {

        __u8            rpl_cmd;        /* command */

        __u8            rpl_resv[5];    /* reserved - must be zero */

        __be16          rpl_max_size;   /* maximum response size or zero */

        __u8            rpl_resv1;      /* reserved - must be zero */

        __u8            rpl_index[3];   /* starting index */

};

/*

 * Port number block in RPL response.

 */

struct fc_els_pnb {

        __be32          pnb_phys_pn;    /* physical port number */

        __u8            pnb_resv;       /* reserved */

        __u8            pnb_port_id[3]; /* port ID */

        __be64          pnb_wwpn;       /* port name */

};

/*

 * RPL LS_ACC response.

 */

struct fc_els_rpl_resp {

        __u8            rpl_cmd;        /* ELS_LS_ACC */

        __u8            rpl_resv1;      /* reserved - must be zero */

        __be16          rpl_plen;       /* payload length */

        __u8            rpl_resv2;      /* reserved - must be zero */

        __u8            rpl_llen[3];    /* list length */

        __u8            rpl_resv3;      /* reserved - must be zero */

        __u8            rpl_index[3];   /* starting index */

        struct fc_els_pnb rpl_pnb[1];   /* variable number of PNBs */

};

/*

 * Link Error Status Block.

 */

struct fc_els_lesb {

        __be32          lesb_link_fail; /* link failure count */

        __be32          lesb_sync_loss; /* loss of synchronization count */

        __be32          lesb_sig_loss;  /* loss of signal count */

        __be32          lesb_prim_err;  /* primitive sequence error count */

        __be32          lesb_inv_word;  /* invalid transmission word count */

        __be32          lesb_inv_crc;   /* invalid CRC count */

};

/*

 * ELS RPS - Read Port Status Block request.

 */

struct fc_els_rps {

        __u8            rps_cmd;        /* command */

        __u8            rps_resv[2];    /* reserved - must be zero */

        __u8            rps_flag;       /* flag - see below */

        __be64          rps_port_spec;  /* port selection */

};

enum fc_els_rps_flag {

        FC_ELS_RPS_DID =        0x00,   /* port identified by D_ID of req. */

        FC_ELS_RPS_PPN =        0x01,   /* port_spec is physical port number */

        FC_ELS_RPS_WWPN =       0x02,   /* port_spec is port WWN */

};

/*

 * ELS RPS LS_ACC response.

 */

struct fc_els_rps_resp {

        __u8            rps_cmd;        /* command - LS_ACC */

        __u8            rps_resv[2];    /* reserved - must be zero */

        __u8            rps_flag;       /* flag - see below */

        __u8            rps_resv2[2];   /* reserved */

        __be16          rps_status;     /* port status - see below */

        struct fc_els_lesb rps_lesb;    /* link error status block */

};

enum fc_els_rps_resp_flag {

        FC_ELS_RPS_LPEV =       0x01,   /* L_port extension valid */

};

enum fc_els_rps_resp_status {

        FC_ELS_RPS_PTP =        1 << 5, /* point-to-point connection */

        FC_ELS_RPS_LOOP =       1 << 4, /* loop mode */

        FC_ELS_RPS_FAB =        1 << 3, /* fabric present */

        FC_ELS_RPS_NO_SIG =     1 << 2, /* loss of signal */

        FC_ELS_RPS_NO_SYNC =    1 << 1, /* loss of synchronization */

        FC_ELS_RPS_RESET =      1 << 0,  /* in link reset protocol */

};

/*

 * ELS LIRR - Link Incident Record Registration request.

 */

struct fc_els_lirr {

        __u8            lirr_cmd;       /* command */

        __u8            lirr_resv[3];   /* reserved - must be zero */

        __u8            lirr_func;      /* registration function */

        __u8            lirr_fmt;       /* FC-4 type of RLIR requested */