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_GSPN_ID = 0x0118,		/* get symbolic port name */
45 	FC_NS_GID_PN =	0x0121,		/* get ID for port name */
46 	FC_NS_GID_NN =	0x0131,		/* get IDs for node name */
47 	FC_NS_GID_FT =	0x0171,		/* get IDs by FC4 type */
48 	FC_NS_GPN_FT =	0x0172,		/* get port names by FC4 type */
49 	FC_NS_GID_PT =	0x01a1,		/* get IDs by port type */
50 	FC_NS_RPN_ID =	0x0212,		/* reg port name for ID */
51 	FC_NS_RNN_ID =	0x0213,		/* reg node name for ID */
52 	FC_NS_RFT_ID =	0x0217,		/* reg FC4 type for ID */
53 	FC_NS_RSPN_ID =	0x0218,		/* reg symbolic port name */
54 	FC_NS_RFF_ID =	0x021f,		/* reg FC4 Features for ID */
55 	FC_NS_RSNN_NN =	0x0239,		/* reg symbolic node name */
56 };
57 
58 /*
59  * Port type values.
60  */
61 enum fc_ns_pt {
62 	FC_NS_UNID_PORT = 0x00,	/* unidentified */
63 	FC_NS_N_PORT =	0x01,	/* N port */
64 	FC_NS_NL_PORT =	0x02,	/* NL port */
65 	FC_NS_FNL_PORT = 0x03,	/* F/NL port */
66 	FC_NS_NX_PORT =	0x7f,	/* Nx port */
67 	FC_NS_F_PORT =	0x81,	/* F port */
68 	FC_NS_FL_PORT =	0x82,	/* FL port */
69 	FC_NS_E_PORT =	0x84,	/* E port */
70 	FC_NS_B_PORT =	0x85,	/* B port */
71 };
72 
73 /*
74  * Port type object.
75  */
76 struct fc_ns_pt_obj {
77 	__u8		pt_type;
78 };
79 
80 /*
81  * Port ID object
82  */
83 struct fc_ns_fid {
84 	__u8		fp_flags;	/* flags for responses only */
85 	__u8		fp_fid[3];
86 };
87 
88 /*
89  * fp_flags in port ID object, for responses only.
90  */
91 #define	FC_NS_FID_LAST	0x80		/* last object */
92 
93 /*
94  * FC4-types object.
95  */
96 #define	FC_NS_TYPES	256	/* number of possible FC-4 types */
97 #define	FC_NS_BPW	32	/* bits per word in bitmap */
98 
99 struct fc_ns_fts {
100 	__be32	ff_type_map[FC_NS_TYPES / FC_NS_BPW]; /* bitmap of FC-4 types */
101 };
102 
103 /*
104  * FC4-features object.
105  */
106 struct fc_ns_ff	{
107 	__be32	fd_feat[FC_NS_TYPES * 4 / FC_NS_BPW]; /* 4-bits per FC-type */
108 };
109 
110 /*
111  * GID_PT request.
112  */
113 struct fc_ns_gid_pt {
114 	__u8		fn_pt_type;
115 	__u8		fn_domain_id_scope;
116 	__u8		fn_area_id_scope;
117 	__u8		fn_resvd;
118 };
119 
120 /*
121  * GID_FT or GPN_FT request.
122  */
123 struct fc_ns_gid_ft {
124 	__u8		fn_resvd;
125 	__u8		fn_domain_id_scope;
126 	__u8		fn_area_id_scope;
127 	__u8		fn_fc4_type;
128 };
129 
130 /*
131  * GPN_FT response.
132  */
133 struct fc_gpn_ft_resp {
134 	__u8		fp_flags;	/* see fp_flags definitions above */
135 	__u8		fp_fid[3];	/* port ID */
136 	__be32		fp_resvd;
137 	__be64		fp_wwpn;	/* port name */
138 };
139 
140 /*
141  * GID_PN request
142  */
143 struct fc_ns_gid_pn {
144 	__be64     fn_wwpn;    /* port name */
145 };
146 
147 /*
148  * GID_PN response or GSPN_ID request
149  */
150 struct fc_gid_pn_resp {
151 	__u8      fp_resvd;
152 	__u8      fp_fid[3];     /* port ID */
153 };
154 
155 /*
156  * GSPN_ID response
157  */
158 struct fc_gspn_resp {
159 	__u8	fp_name_len;
160 	char	fp_name[];
161 };
162 
163 /*
164  * RFT_ID request - register FC-4 types for ID.
165  */
166 struct fc_ns_rft_id {
167 	struct fc_ns_fid fr_fid;	/* port ID object */
168 	struct fc_ns_fts fr_fts;	/* FC-4 types object */
169 };
170 
171 /*
172  * RPN_ID request - register port name for ID.
173  * RNN_ID request - register node name for ID.
174  */
175 struct fc_ns_rn_id {
176 	struct fc_ns_fid fr_fid;	/* port ID object */
177 	__be64		fr_wwn;		/* node name or port name */
178 } __attribute__((__packed__));
179 
180 /*
181  * RSNN_NN request - register symbolic node name
182  */
183 struct fc_ns_rsnn {
184 	__be64		fr_wwn;		/* node name */
185 	__u8		fr_name_len;
186 	char		fr_name[];
187 } __attribute__((__packed__));
188 
189 /*
190  * RSPN_ID request - register symbolic port name
191  */
192 struct fc_ns_rspn {
193 	struct fc_ns_fid fr_fid;	/* port ID object */
194 	__u8		fr_name_len;
195 	char		fr_name[];
196 } __attribute__((__packed__));
197 
198 /*
199  * RFF_ID request - register FC-4 Features for ID.
200  */
201 struct fc_ns_rff_id {
202 	struct fc_ns_fid fr_fid;	/* port ID object */
203 	__u8		fr_resvd[2];
204 	__u8		fr_feat;	/* FC-4 Feature bits */
205 	__u8		fr_type;	/* FC-4 type */
206 } __attribute__((__packed__));
207 
208 #endif /* _FC_NS_H_ */
209