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-rw-r--r--include/scsi/fc/fc_fip.h237
1 files changed, 237 insertions, 0 deletions
diff --git a/include/scsi/fc/fc_fip.h b/include/scsi/fc/fc_fip.h
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index 000000000000..0627a9ae6347
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+++ b/include/scsi/fc/fc_fip.h
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1/*
2 * Copyright 2008 Cisco Systems, Inc. All rights reserved.
3 *
4 * This program is free software; you may redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
9 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
10 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
11 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
12 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
13 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
14 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
15 * SOFTWARE.
16 */
17#ifndef _FC_FIP_H_
18#define _FC_FIP_H_
19
20/*
21 * This version is based on:
22 * http://www.t11.org/ftp/t11/pub/fc/bb-5/08-543v1.pdf
23 */
24
25/*
26 * The FIP ethertype eventually goes in net/if_ether.h.
27 */
28#ifndef ETH_P_FIP
29#define ETH_P_FIP 0x8914 /* FIP Ethertype */
30#endif
31
32#define FIP_DEF_PRI 128 /* default selection priority */
33#define FIP_DEF_FC_MAP 0x0efc00 /* default FCoE MAP (MAC OUI) value */
34#define FIP_DEF_FKA 8000 /* default FCF keep-alive/advert period (mS) */
35#define FIP_VN_KA_PERIOD 90000 /* required VN_port keep-alive period (mS) */
36#define FIP_FCF_FUZZ 100 /* random time added by FCF (mS) */
37
38/*
39 * Multicast MAC addresses. T11-adopted.
40 */
41#define FIP_ALL_FCOE_MACS ((u8[6]) { 1, 0x10, 0x18, 1, 0, 0 })
42#define FIP_ALL_ENODE_MACS ((u8[6]) { 1, 0x10, 0x18, 1, 0, 1 })
43#define FIP_ALL_FCF_MACS ((u8[6]) { 1, 0x10, 0x18, 1, 0, 2 })
44
45#define FIP_VER 1 /* version for fip_header */
46
47struct fip_header {
48 __u8 fip_ver; /* upper 4 bits are the version */
49 __u8 fip_resv1; /* reserved */
50 __be16 fip_op; /* operation code */
51 __u8 fip_resv2; /* reserved */
52 __u8 fip_subcode; /* lower 4 bits are sub-code */
53 __be16 fip_dl_len; /* length of descriptors in words */
54 __be16 fip_flags; /* header flags */
55} __attribute__((packed));
56
57#define FIP_VER_SHIFT 4
58#define FIP_VER_ENCAPS(v) ((v) << FIP_VER_SHIFT)
59#define FIP_VER_DECAPS(v) ((v) >> FIP_VER_SHIFT)
60#define FIP_BPW 4 /* bytes per word for lengths */
61
62/*
63 * fip_op.
64 */
65enum fip_opcode {
66 FIP_OP_DISC = 1, /* discovery, advertisement, etc. */
67 FIP_OP_LS = 2, /* Link Service request or reply */
68 FIP_OP_CTRL = 3, /* Keep Alive / Link Reset */
69 FIP_OP_VLAN = 4, /* VLAN discovery */
70 FIP_OP_VENDOR_MIN = 0xfff8, /* min vendor-specific opcode */
71 FIP_OP_VENDOR_MAX = 0xfffe, /* max vendor-specific opcode */
72};
73
74/*
75 * Subcodes for FIP_OP_DISC.
76 */
77enum fip_disc_subcode {
78 FIP_SC_SOL = 1, /* solicitation */
79 FIP_SC_ADV = 2, /* advertisement */
80};
81
82/*
83 * Subcodes for FIP_OP_LS.
84 */
85enum fip_trans_subcode {
86 FIP_SC_REQ = 1, /* request */
87 FIP_SC_REP = 2, /* reply */
88};
89
90/*
91 * Subcodes for FIP_OP_RESET.
92 */
93enum fip_reset_subcode {
94 FIP_SC_KEEP_ALIVE = 1, /* keep-alive from VN_Port */
95 FIP_SC_CLR_VLINK = 2, /* clear virtual link from VF_Port */
96};
97
98/*
99 * Subcodes for FIP_OP_VLAN.
100 */
101enum fip_vlan_subcode {
102 FIP_SC_VL_REQ = 1, /* request */
103 FIP_SC_VL_REP = 2, /* reply */
104};
105
106/*
107 * flags in header fip_flags.
108 */
109enum fip_flag {
110 FIP_FL_FPMA = 0x8000, /* supports FPMA fabric-provided MACs */
111 FIP_FL_SPMA = 0x4000, /* supports SPMA server-provided MACs */
112 FIP_FL_AVAIL = 0x0004, /* available for FLOGI/ELP */
113 FIP_FL_SOL = 0x0002, /* this is a solicited message */
114 FIP_FL_FPORT = 0x0001, /* sent from an F port */
115};
116
117/*
118 * Common descriptor header format.
119 */
120struct fip_desc {
121 __u8 fip_dtype; /* type - see below */
122 __u8 fip_dlen; /* length - in 32-bit words */
123};
124
125enum fip_desc_type {
126 FIP_DT_PRI = 1, /* priority for forwarder selection */
127 FIP_DT_MAC = 2, /* MAC address */
128 FIP_DT_MAP_OUI = 3, /* FC-MAP OUI */
129 FIP_DT_NAME = 4, /* switch name or node name */
130 FIP_DT_FAB = 5, /* fabric descriptor */
131 FIP_DT_FCOE_SIZE = 6, /* max FCoE frame size */
132 FIP_DT_FLOGI = 7, /* FLOGI request or response */
133 FIP_DT_FDISC = 8, /* FDISC request or response */
134 FIP_DT_LOGO = 9, /* LOGO request or response */
135 FIP_DT_ELP = 10, /* ELP request or response */
136 FIP_DT_VN_ID = 11, /* VN_Node Identifier */
137 FIP_DT_FKA = 12, /* advertisement keep-alive period */
138 FIP_DT_VENDOR = 13, /* vendor ID */
139 FIP_DT_VLAN = 14, /* vlan number */
140 FIP_DT_LIMIT, /* max defined desc_type + 1 */
141 FIP_DT_VENDOR_BASE = 128, /* first vendor-specific desc_type */
142};
143
144/*
145 * FIP_DT_PRI - priority descriptor.
146 */
147struct fip_pri_desc {
148 struct fip_desc fd_desc;
149 __u8 fd_resvd;
150 __u8 fd_pri; /* FCF priority: higher is better */
151} __attribute__((packed));
152
153/*
154 * FIP_DT_MAC - MAC address descriptor.
155 */
156struct fip_mac_desc {
157 struct fip_desc fd_desc;
158 __u8 fd_mac[ETH_ALEN];
159} __attribute__((packed));
160
161/*
162 * FIP_DT_MAP - descriptor.
163 */
164struct fip_map_desc {
165 struct fip_desc fd_desc;
166 __u8 fd_resvd[3];
167 __u8 fd_map[3];
168} __attribute__((packed));
169
170/*
171 * FIP_DT_NAME descriptor.
172 */
173struct fip_wwn_desc {
174 struct fip_desc fd_desc;
175 __u8 fd_resvd[2];
176 __be64 fd_wwn; /* 64-bit WWN, unaligned */
177} __attribute__((packed));
178
179/*
180 * FIP_DT_FAB descriptor.
181 */
182struct fip_fab_desc {
183 struct fip_desc fd_desc;
184 __be16 fd_vfid; /* virtual fabric ID */
185 __u8 fd_resvd;
186 __u8 fd_map[3]; /* FC-MAP value */
187 __be64 fd_wwn; /* fabric name, unaligned */
188} __attribute__((packed));
189
190/*
191 * FIP_DT_FCOE_SIZE descriptor.
192 */
193struct fip_size_desc {
194 struct fip_desc fd_desc;
195 __be16 fd_size;
196} __attribute__((packed));
197
198/*
199 * Descriptor that encapsulates an ELS or ILS frame.
200 * The encapsulated frame immediately follows this header, without
201 * SOF, EOF, or CRC.
202 */
203struct fip_encaps {
204 struct fip_desc fd_desc;
205 __u8 fd_resvd[2];
206} __attribute__((packed));
207
208/*
209 * FIP_DT_VN_ID - VN_Node Identifier descriptor.
210 */
211struct fip_vn_desc {
212 struct fip_desc fd_desc;
213 __u8 fd_mac[ETH_ALEN];
214 __u8 fd_resvd;
215 __u8 fd_fc_id[3];
216 __be64 fd_wwpn; /* port name, unaligned */
217} __attribute__((packed));
218
219/*
220 * FIP_DT_FKA - Advertisement keep-alive period.
221 */
222struct fip_fka_desc {
223 struct fip_desc fd_desc;
224 __u8 fd_resvd[2];
225 __be32 fd_fka_period; /* adv./keep-alive period in mS */
226} __attribute__((packed));
227
228/*
229 * FIP_DT_VENDOR descriptor.
230 */
231struct fip_vendor_desc {
232 struct fip_desc fd_desc;
233 __u8 fd_resvd[2];
234 __u8 fd_vendor_id[8];
235} __attribute__((packed));
236
237#endif /* _FC_FIP_H_ */
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