include/scsi/fc/fc_ns.h

   1 /*
   2  * Copyright(c) 2007 Intel Corporation. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms and conditions of the GNU General Public License,
   6  * version 2, as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  16  *
  17  * Maintained at www.Open-FCoE.org
  18  */
  19
  20 #ifndef _FC_NS_H_
  21 #define _FC_NS_H_
  22
  23 #include <linux/types.h>
  24
  25 /*
  26  * Fibre Channel Services - Name Service (dNS)
  27  * From T11.org FC-GS-2 Rev 5.3 November 1998.
  28  */
  29
  30 /*
  31  * Common-transport sub-type for Name Server.
  32  */
  33 #define FC_NS_SUBTYPE       2   /* fs_ct_hdr.ct_fs_subtype */
  34
  35 /*
  36  * Name server Requests.
  37  * Note:  this is an incomplete list, some unused requests are omitted.
  38  */
  39 enum fc_ns_req {
  40         FC_NS_GA_NXT =  0x0100,         /* get all next */
  41         FC_NS_GI_A =    0x0101,         /* get identifiers - scope */
  42         FC_NS_GPN_ID =  0x0112,         /* get port name by ID */
  43         FC_NS_GNN_ID =  0x0113,         /* get node name by ID */
  44         FC_NS_GID_PN =  0x0121,         /* get ID for port name */
  45         FC_NS_GID_NN =  0x0131,         /* get IDs for node name */
  46         FC_NS_GID_FT =  0x0171,         /* get IDs by FC4 type */
  47         FC_NS_GPN_FT =  0x0172,         /* get port names by FC4 type */
  48         FC_NS_GID_PT =  0x01a1,         /* get IDs by port type */
  49         FC_NS_RPN_ID =  0x0212,         /* reg port name for ID */
  50         FC_NS_RNN_ID =  0x0213,         /* reg node name for ID */
  51         FC_NS_RFT_ID =  0x0217,         /* reg FC4 type for ID */
  52         FC_NS_RSPN_ID = 0x0218,         /* reg symbolic port name */
  53         FC_NS_RFF_ID =  0x021f,         /* reg FC4 Features for ID */
  54         FC_NS_RSNN_NN = 0x0239,         /* reg symbolic node name */
  55 };
  56
  57 /*
  58  * Port type values.
  59  */
  60 enum fc_ns_pt {
  61         FC_NS_UNID_PORT = 0x00, /* unidentified */
  62         FC_NS_N_PORT =  0x01,   /* N port */
  63         FC_NS_NL_PORT = 0x02,   /* NL port */
  64         FC_NS_FNL_PORT = 0x03,  /* F/NL port */
  65         FC_NS_NX_PORT = 0x7f,   /* Nx port */
  66         FC_NS_F_PORT =  0x81,   /* F port */
  67         FC_NS_FL_PORT = 0x82,   /* FL port */
  68         FC_NS_E_PORT =  0x84,   /* E port */
  69         FC_NS_B_PORT =  0x85,   /* B port */
  70 };
  71
  72 /*
  73  * Port type object.
  74  */
  75 struct fc_ns_pt_obj {
  76         __u8            pt_type;
  77 };
  78
  79 /*
  80  * Port ID object
  81  */
  82 struct fc_ns_fid {
  83         __u8            fp_flags;       /* flags for responses only */
  84         __u8            fp_fid[3];
  85 };
  86
  87 /*
  88  * fp_flags in port ID object, for responses only.
  89  */
  90 #define FC_NS_FID_LAST  0x80            /* last object */
  91
  92 /*
  93  * FC4-types object.
  94  */
  95 #define FC_NS_TYPES     256     /* number of possible FC-4 types */
  96 #define FC_NS_BPW       32      /* bits per word in bitmap */
  97
  98 struct fc_ns_fts {
  99         __be32  ff_type_map[FC_NS_TYPES / FC_NS_BPW]; /* bitmap of FC-4 types */
 100 };
 101
 102 /*
 103  * FC4-features object.
 104  */
 105 struct fc_ns_ff {
 106         __be32  fd_feat[FC_NS_TYPES * 4 / FC_NS_BPW]; /* 4-bits per FC-type */
 107 };
 108
 109 /*
 110  * GID_PT request.
 111  */
 112 struct fc_ns_gid_pt {
 113         __u8            fn_pt_type;
 114         __u8            fn_domain_id_scope;
 115         __u8            fn_area_id_scope;
 116         __u8            fn_resvd;
 117 };
 118
 119 /*
 120  * GID_FT or GPN_FT request.
 121  */
 122 struct fc_ns_gid_ft {
 123         __u8            fn_resvd;
 124         __u8            fn_domain_id_scope;
 125         __u8            fn_area_id_scope;
 126         __u8            fn_fc4_type;
 127 };
 128
 129 /*
 130  * GPN_FT response.
 131  */
 132 struct fc_gpn_ft_resp {
 133         __u8            fp_flags;       /* see fp_flags definitions above */
 134         __u8            fp_fid[3];      /* port ID */
 135         __be32          fp_resvd;
 136         __be64          fp_wwpn;        /* port name */
 137 };
 138
 139 /*
 140  * GID_PN request
 141  */
 142 struct fc_ns_gid_pn {
 143         __be64     fn_wwpn;    /* port name */
 144 };
 145
 146 /*
 147  * GID_PN response
 148  */
 149 struct fc_gid_pn_resp {
 150         __u8      fp_resvd;
 151         __u8      fp_fid[3];     /* port ID */
 152 };
 153
 154 /*
 155  * RFT_ID request - register FC-4 types for ID.
 156  */
 157 struct fc_ns_rft_id {
 158         struct fc_ns_fid fr_fid;        /* port ID object */
 159         struct fc_ns_fts fr_fts;        /* FC-4 types object */
 160 };
 161
 162 /*
 163  * RPN_ID request - register port name for ID.
 164  * RNN_ID request - register node name for ID.
 165  */
 166 struct fc_ns_rn_id {
 167         struct fc_ns_fid fr_fid;        /* port ID object */
 168         __be64          fr_wwn;         /* node name or port name */
 169 } __attribute__((__packed__));
 170
 171 /*
 172  * RSNN_NN request - register symbolic node name
 173  */
 174 struct fc_ns_rsnn {
 175         __be64          fr_wwn;         /* node name */
 176         __u8            fr_name_len;
 177         char            fr_name[];
 178 } __attribute__((__packed__));
 179
 180 /*
 181  * RSPN_ID request - register symbolic port name
 182  */
 183 struct fc_ns_rspn {
 184         struct fc_ns_fid fr_fid;        /* port ID object */
 185         __u8            fr_name_len;
 186         char            fr_name[];
 187 } __attribute__((__packed__));
 188
 189 /*
 190  * RFF_ID request - register FC-4 Features for ID.
 191  */
 192 struct fc_ns_rff_id {
 193         struct fc_ns_fid fr_fid;        /* port ID object */
 194         __u8            fr_resvd[2];
 195         __u8            fr_feat;        /* FC-4 Feature bits */
 196         __u8            fr_type;        /* FC-4 type */
 197 } __attribute__((__packed__));
 198
 199 #endif /* _FC_NS_H_ */