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_NS_H_
9 #define	_FC_NS_H_
10 
11 #include <linux/types.h>
12 
13 /*
14  * Fibre Channel Services - Name Service (dNS)
15  * From T11.org FC-GS-2 Rev 5.3 November 1998.
16  */
17 
18 /*
19  * Common-transport sub-type for Name Server.
20  */
21 #define	FC_NS_SUBTYPE	    2	/* fs_ct_hdr.ct_fs_subtype */
22 
23 /*
24  * Name server Requests.
25  * Note:  this is an incomplete list, some unused requests are omitted.
26  */
27 enum fc_ns_req {
28 	FC_NS_GA_NXT =	0x0100,		/* get all next */
29 	FC_NS_GI_A =	0x0101,		/* get identifiers - scope */
30 	FC_NS_GPN_ID =	0x0112,		/* get port name by ID */
31 	FC_NS_GNN_ID =	0x0113,		/* get node name by ID */
32 	FC_NS_GSPN_ID = 0x0118,		/* get symbolic port name */
33 	FC_NS_GID_PN =	0x0121,		/* get ID for port name */
34 	FC_NS_GID_NN =	0x0131,		/* get IDs for node name */
35 	FC_NS_GID_FT =	0x0171,		/* get IDs by FC4 type */
36 	FC_NS_GPN_FT =	0x0172,		/* get port names by FC4 type */
37 	FC_NS_GID_PT =	0x01a1,		/* get IDs by port type */
38 	FC_NS_RPN_ID =	0x0212,		/* reg port name for ID */
39 	FC_NS_RNN_ID =	0x0213,		/* reg node name for ID */
40 	FC_NS_RFT_ID =	0x0217,		/* reg FC4 type for ID */
41 	FC_NS_RSPN_ID =	0x0218,		/* reg symbolic port name */
42 	FC_NS_RFF_ID =	0x021f,		/* reg FC4 Features for ID */
43 	FC_NS_RSNN_NN =	0x0239,		/* reg symbolic node name */
44 };
45 
46 /*
47  * Port type values.
48  */
49 enum fc_ns_pt {
50 	FC_NS_UNID_PORT = 0x00,	/* unidentified */
51 	FC_NS_N_PORT =	0x01,	/* N port */
52 	FC_NS_NL_PORT =	0x02,	/* NL port */
53 	FC_NS_FNL_PORT = 0x03,	/* F/NL port */
54 	FC_NS_NX_PORT =	0x7f,	/* Nx port */
55 	FC_NS_F_PORT =	0x81,	/* F port */
56 	FC_NS_FL_PORT =	0x82,	/* FL port */
57 	FC_NS_E_PORT =	0x84,	/* E port */
58 	FC_NS_B_PORT =	0x85,	/* B port */
59 };
60 
61 /*
62  * Port type object.
63  */
64 struct fc_ns_pt_obj {
65 	__u8		pt_type;
66 };
67 
68 /*
69  * Port ID object
70  */
71 struct fc_ns_fid {
72 	__u8		fp_flags;	/* flags for responses only */
73 	__u8		fp_fid[3];
74 };
75 
76 /*
77  * fp_flags in port ID object, for responses only.
78  */
79 #define	FC_NS_FID_LAST	0x80		/* last object */
80 
81 /*
82  * FC4-types object.
83  */
84 #define	FC_NS_TYPES	256	/* number of possible FC-4 types */
85 #define	FC_NS_BPW	32	/* bits per word in bitmap */
86 
87 struct fc_ns_fts {
88 	__be32	ff_type_map[FC_NS_TYPES / FC_NS_BPW]; /* bitmap of FC-4 types */
89 };
90 
91 /*
92  * FC4-features object.
93  */
94 struct fc_ns_ff	{
95 	__be32	fd_feat[FC_NS_TYPES * 4 / FC_NS_BPW]; /* 4-bits per FC-type */
96 };
97 
98 /*
99  * GID_PT request.
100  */
101 struct fc_ns_gid_pt {
102 	__u8		fn_pt_type;
103 	__u8		fn_domain_id_scope;
104 	__u8		fn_area_id_scope;
105 	__u8		fn_resvd;
106 };
107 
108 /*
109  * GID_FT or GPN_FT request.
110  */
111 struct fc_ns_gid_ft {
112 	__u8		fn_resvd;
113 	__u8		fn_domain_id_scope;
114 	__u8		fn_area_id_scope;
115 	__u8		fn_fc4_type;
116 };
117 
118 /*
119  * GPN_FT response.
120  */
121 struct fc_gpn_ft_resp {
122 	__u8		fp_flags;	/* see fp_flags definitions above */
123 	__u8		fp_fid[3];	/* port ID */
124 	__be32		fp_resvd;
125 	__be64		fp_wwpn;	/* port name */
126 };
127 
128 /*
129  * GID_PN request
130  */
131 struct fc_ns_gid_pn {
132 	__be64     fn_wwpn;    /* port name */
133 };
134 
135 /*
136  * GID_PN response or GSPN_ID request
137  */
138 struct fc_gid_pn_resp {
139 	__u8      fp_resvd;
140 	__u8      fp_fid[3];     /* port ID */
141 };
142 
143 /*
144  * GSPN_ID response
145  */
146 struct fc_gspn_resp {
147 	__u8	fp_name_len;
148 	char	fp_name[];
149 };
150 
151 /*
152  * RFT_ID request - register FC-4 types for ID.
153  */
154 struct fc_ns_rft_id {
155 	struct fc_ns_fid fr_fid;	/* port ID object */
156 	struct fc_ns_fts fr_fts;	/* FC-4 types object */
157 };
158 
159 /*
160  * RPN_ID request - register port name for ID.
161  * RNN_ID request - register node name for ID.
162  */
163 struct fc_ns_rn_id {
164 	struct fc_ns_fid fr_fid;	/* port ID object */
165 	__be64		fr_wwn;		/* node name or port name */
166 } __attribute__((__packed__));
167 
168 /*
169  * RSNN_NN request - register symbolic node name
170  */
171 struct fc_ns_rsnn {
172 	__be64		fr_wwn;		/* node name */
173 	__u8		fr_name_len;
174 	char		fr_name[];
175 } __attribute__((__packed__));
176 
177 /*
178  * RSPN_ID request - register symbolic port name
179  */
180 struct fc_ns_rspn {
181 	struct fc_ns_fid fr_fid;	/* port ID object */
182 	__u8		fr_name_len;
183 	char		fr_name[];
184 } __attribute__((__packed__));
185 
186 /*
187  * RFF_ID request - register FC-4 Features for ID.
188  */
189 struct fc_ns_rff_id {
190 	struct fc_ns_fid fr_fid;	/* port ID object */
191 	__u8		fr_resvd[2];
192 	__u8		fr_feat;	/* FC-4 Feature bits */
193 	__u8		fr_type;	/* FC-4 type */
194 } __attribute__((__packed__));
195 
196 #endif /* _FC_NS_H_ */
197