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f032c2f7 RL |
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_FS_H_ | |
21 | #define _FC_FS_H_ | |
22 | ||
07aac328 RL |
23 | #include <linux/types.h> |
24 | ||
f032c2f7 RL |
25 | /* |
26 | * Fibre Channel Framing and Signalling definitions. | |
27 | * From T11 FC-FS-2 Rev 0.90 - 9 August 2005. | |
28 | */ | |
29 | ||
30 | /* | |
31 | * Frame header | |
32 | */ | |
33 | struct fc_frame_header { | |
34 | __u8 fh_r_ctl; /* routing control */ | |
35 | __u8 fh_d_id[3]; /* Destination ID */ | |
36 | ||
37 | __u8 fh_cs_ctl; /* class of service control / pri */ | |
38 | __u8 fh_s_id[3]; /* Source ID */ | |
39 | ||
40 | __u8 fh_type; /* see enum fc_fh_type below */ | |
41 | __u8 fh_f_ctl[3]; /* frame control */ | |
42 | ||
43 | __u8 fh_seq_id; /* sequence ID */ | |
44 | __u8 fh_df_ctl; /* data field control */ | |
45 | __be16 fh_seq_cnt; /* sequence count */ | |
46 | ||
47 | __be16 fh_ox_id; /* originator exchange ID */ | |
48 | __be16 fh_rx_id; /* responder exchange ID */ | |
49 | __be32 fh_parm_offset; /* parameter or relative offset */ | |
50 | }; | |
51 | ||
52 | #define FC_FRAME_HEADER_LEN 24 /* expected length of structure */ | |
53 | ||
54 | #define FC_MAX_PAYLOAD 2112U /* max payload length in bytes */ | |
55 | #define FC_MIN_MAX_PAYLOAD 256U /* lower limit on max payload */ | |
56 | ||
57 | #define FC_MAX_FRAME (FC_MAX_PAYLOAD + FC_FRAME_HEADER_LEN) | |
58 | #define FC_MIN_MAX_FRAME (FC_MIN_MAX_PAYLOAD + FC_FRAME_HEADER_LEN) | |
59 | ||
60 | /* | |
61 | * fh_r_ctl - Routing control definitions. | |
62 | */ | |
63 | /* | |
64 | * FC-4 device_data. | |
65 | */ | |
66 | enum fc_rctl { | |
67 | FC_RCTL_DD_UNCAT = 0x00, /* uncategorized information */ | |
68 | FC_RCTL_DD_SOL_DATA = 0x01, /* solicited data */ | |
69 | FC_RCTL_DD_UNSOL_CTL = 0x02, /* unsolicited control */ | |
70 | FC_RCTL_DD_SOL_CTL = 0x03, /* solicited control or reply */ | |
71 | FC_RCTL_DD_UNSOL_DATA = 0x04, /* unsolicited data */ | |
72 | FC_RCTL_DD_DATA_DESC = 0x05, /* data descriptor */ | |
73 | FC_RCTL_DD_UNSOL_CMD = 0x06, /* unsolicited command */ | |
74 | FC_RCTL_DD_CMD_STATUS = 0x07, /* command status */ | |
75 | ||
76 | #define FC_RCTL_ILS_REQ FC_RCTL_DD_UNSOL_CTL /* ILS request */ | |
77 | #define FC_RCTL_ILS_REP FC_RCTL_DD_SOL_CTL /* ILS reply */ | |
78 | ||
79 | /* | |
80 | * Extended Link_Data | |
81 | */ | |
82 | FC_RCTL_ELS_REQ = 0x22, /* extended link services request */ | |
83 | FC_RCTL_ELS_REP = 0x23, /* extended link services reply */ | |
84 | FC_RCTL_ELS4_REQ = 0x32, /* FC-4 ELS request */ | |
85 | FC_RCTL_ELS4_REP = 0x33, /* FC-4 ELS reply */ | |
86 | /* | |
87 | * Optional Extended Headers | |
88 | */ | |
89 | FC_RCTL_VFTH = 0x50, /* virtual fabric tagging header */ | |
90 | FC_RCTL_IFRH = 0x51, /* inter-fabric routing header */ | |
91 | FC_RCTL_ENCH = 0x52, /* encapsulation header */ | |
92 | /* | |
93 | * Basic Link Services fh_r_ctl values. | |
94 | */ | |
95 | FC_RCTL_BA_NOP = 0x80, /* basic link service NOP */ | |
96 | FC_RCTL_BA_ABTS = 0x81, /* basic link service abort */ | |
97 | FC_RCTL_BA_RMC = 0x82, /* remove connection */ | |
98 | FC_RCTL_BA_ACC = 0x84, /* basic accept */ | |
99 | FC_RCTL_BA_RJT = 0x85, /* basic reject */ | |
100 | FC_RCTL_BA_PRMT = 0x86, /* dedicated connection preempted */ | |
101 | /* | |
102 | * Link Control Information. | |
103 | */ | |
104 | FC_RCTL_ACK_1 = 0xc0, /* acknowledge_1 */ | |
105 | FC_RCTL_ACK_0 = 0xc1, /* acknowledge_0 */ | |
106 | FC_RCTL_P_RJT = 0xc2, /* port reject */ | |
107 | FC_RCTL_F_RJT = 0xc3, /* fabric reject */ | |
108 | FC_RCTL_P_BSY = 0xc4, /* port busy */ | |
109 | FC_RCTL_F_BSY = 0xc5, /* fabric busy to data frame */ | |
110 | FC_RCTL_F_BSYL = 0xc6, /* fabric busy to link control frame */ | |
111 | FC_RCTL_LCR = 0xc7, /* link credit reset */ | |
112 | FC_RCTL_END = 0xc9, /* end */ | |
113 | }; | |
114 | /* incomplete list of definitions */ | |
115 | ||
116 | /* | |
117 | * R_CTL names initializer. | |
118 | * Please keep this matching the above definitions. | |
119 | */ | |
120 | #define FC_RCTL_NAMES_INIT { \ | |
121 | [FC_RCTL_DD_UNCAT] = "uncat", \ | |
122 | [FC_RCTL_DD_SOL_DATA] = "sol data", \ | |
123 | [FC_RCTL_DD_UNSOL_CTL] = "unsol ctl", \ | |
124 | [FC_RCTL_DD_SOL_CTL] = "sol ctl/reply", \ | |
125 | [FC_RCTL_DD_UNSOL_DATA] = "unsol data", \ | |
126 | [FC_RCTL_DD_DATA_DESC] = "data desc", \ | |
127 | [FC_RCTL_DD_UNSOL_CMD] = "unsol cmd", \ | |
128 | [FC_RCTL_DD_CMD_STATUS] = "cmd status", \ | |
129 | [FC_RCTL_ELS_REQ] = "ELS req", \ | |
130 | [FC_RCTL_ELS_REP] = "ELS rep", \ | |
131 | [FC_RCTL_ELS4_REQ] = "FC-4 ELS req", \ | |
132 | [FC_RCTL_ELS4_REP] = "FC-4 ELS rep", \ | |
133 | [FC_RCTL_BA_NOP] = "BLS NOP", \ | |
134 | [FC_RCTL_BA_ABTS] = "BLS abort", \ | |
135 | [FC_RCTL_BA_RMC] = "BLS remove connection", \ | |
136 | [FC_RCTL_BA_ACC] = "BLS accept", \ | |
137 | [FC_RCTL_BA_RJT] = "BLS reject", \ | |
138 | [FC_RCTL_BA_PRMT] = "BLS dedicated connection preempted", \ | |
139 | [FC_RCTL_ACK_1] = "LC ACK_1", \ | |
140 | [FC_RCTL_ACK_0] = "LC ACK_0", \ | |
141 | [FC_RCTL_P_RJT] = "LC port reject", \ | |
142 | [FC_RCTL_F_RJT] = "LC fabric reject", \ | |
143 | [FC_RCTL_P_BSY] = "LC port busy", \ | |
144 | [FC_RCTL_F_BSY] = "LC fabric busy to data frame", \ | |
145 | [FC_RCTL_F_BSYL] = "LC fabric busy to link control frame",\ | |
146 | [FC_RCTL_LCR] = "LC link credit reset", \ | |
147 | [FC_RCTL_END] = "LC end", \ | |
148 | } | |
149 | ||
150 | /* | |
151 | * Well-known fabric addresses. | |
152 | */ | |
153 | enum fc_well_known_fid { | |
a29e7646 | 154 | FC_FID_NONE = 0x000000, /* No destination */ |
f032c2f7 RL |
155 | FC_FID_BCAST = 0xffffff, /* broadcast */ |
156 | FC_FID_FLOGI = 0xfffffe, /* fabric login */ | |
157 | FC_FID_FCTRL = 0xfffffd, /* fabric controller */ | |
158 | FC_FID_DIR_SERV = 0xfffffc, /* directory server */ | |
159 | FC_FID_TIME_SERV = 0xfffffb, /* time server */ | |
160 | FC_FID_MGMT_SERV = 0xfffffa, /* management server */ | |
161 | FC_FID_QOS = 0xfffff9, /* QoS Facilitator */ | |
162 | FC_FID_ALIASES = 0xfffff8, /* alias server (FC-PH2) */ | |
163 | FC_FID_SEC_KEY = 0xfffff7, /* Security key dist. server */ | |
164 | FC_FID_CLOCK = 0xfffff6, /* clock synch server */ | |
165 | FC_FID_MCAST_SERV = 0xfffff5, /* multicast server */ | |
166 | }; | |
167 | ||
168 | #define FC_FID_WELL_KNOWN_MAX 0xffffff /* highest well-known fabric ID */ | |
169 | #define FC_FID_WELL_KNOWN_BASE 0xfffff5 /* start of well-known fabric ID */ | |
170 | ||
171 | /* | |
172 | * Other well-known addresses, outside the above contiguous range. | |
173 | */ | |
174 | #define FC_FID_DOM_MGR 0xfffc00 /* domain manager base */ | |
175 | ||
176 | /* | |
177 | * Fabric ID bytes. | |
178 | */ | |
179 | #define FC_FID_DOMAIN 0 | |
180 | #define FC_FID_PORT 1 | |
181 | #define FC_FID_LINK 2 | |
182 | ||
183 | /* | |
184 | * fh_type codes | |
185 | */ | |
186 | enum fc_fh_type { | |
187 | FC_TYPE_BLS = 0x00, /* basic link service */ | |
188 | FC_TYPE_ELS = 0x01, /* extended link service */ | |
189 | FC_TYPE_IP = 0x05, /* IP over FC, RFC 4338 */ | |
190 | FC_TYPE_FCP = 0x08, /* SCSI FCP */ | |
191 | FC_TYPE_CT = 0x20, /* Fibre Channel Services (FC-CT) */ | |
192 | FC_TYPE_ILS = 0x22, /* internal link service */ | |
193 | }; | |
194 | ||
195 | /* | |
196 | * FC_TYPE names initializer. | |
197 | * Please keep this matching the above definitions. | |
198 | */ | |
199 | #define FC_TYPE_NAMES_INIT { \ | |
200 | [FC_TYPE_BLS] = "BLS", \ | |
201 | [FC_TYPE_ELS] = "ELS", \ | |
202 | [FC_TYPE_IP] = "IP", \ | |
203 | [FC_TYPE_FCP] = "FCP", \ | |
204 | [FC_TYPE_CT] = "CT", \ | |
205 | [FC_TYPE_ILS] = "ILS", \ | |
206 | } | |
207 | ||
208 | /* | |
209 | * Exchange IDs. | |
210 | */ | |
211 | #define FC_XID_UNKNOWN 0xffff /* unknown exchange ID */ | |
212 | #define FC_XID_MIN 0x0 /* supported min exchange ID */ | |
213 | #define FC_XID_MAX 0xfffe /* supported max exchange ID */ | |
214 | ||
215 | /* | |
216 | * fh_f_ctl - Frame control flags. | |
217 | */ | |
218 | #define FC_FC_EX_CTX (1 << 23) /* sent by responder to exchange */ | |
219 | #define FC_FC_SEQ_CTX (1 << 22) /* sent by responder to sequence */ | |
220 | #define FC_FC_FIRST_SEQ (1 << 21) /* first sequence of this exchange */ | |
221 | #define FC_FC_LAST_SEQ (1 << 20) /* last sequence of this exchange */ | |
222 | #define FC_FC_END_SEQ (1 << 19) /* last frame of sequence */ | |
223 | #define FC_FC_END_CONN (1 << 18) /* end of class 1 connection pending */ | |
224 | #define FC_FC_RES_B17 (1 << 17) /* reserved */ | |
225 | #define FC_FC_SEQ_INIT (1 << 16) /* transfer of sequence initiative */ | |
226 | #define FC_FC_X_ID_REASS (1 << 15) /* exchange ID has been changed */ | |
227 | #define FC_FC_X_ID_INVAL (1 << 14) /* exchange ID invalidated */ | |
228 | ||
229 | #define FC_FC_ACK_1 (1 << 12) /* 13:12 = 1: ACK_1 expected */ | |
230 | #define FC_FC_ACK_N (2 << 12) /* 13:12 = 2: ACK_N expected */ | |
231 | #define FC_FC_ACK_0 (3 << 12) /* 13:12 = 3: ACK_0 expected */ | |
232 | ||
233 | #define FC_FC_RES_B11 (1 << 11) /* reserved */ | |
234 | #define FC_FC_RES_B10 (1 << 10) /* reserved */ | |
235 | #define FC_FC_RETX_SEQ (1 << 9) /* retransmitted sequence */ | |
236 | #define FC_FC_UNI_TX (1 << 8) /* unidirectional transmit (class 1) */ | |
237 | #define FC_FC_CONT_SEQ(i) ((i) << 6) | |
238 | #define FC_FC_ABT_SEQ(i) ((i) << 4) | |
239 | #define FC_FC_REL_OFF (1 << 3) /* parameter is relative offset */ | |
240 | #define FC_FC_RES2 (1 << 2) /* reserved */ | |
241 | #define FC_FC_FILL(i) ((i) & 3) /* 1:0: bytes of trailing fill */ | |
242 | ||
243 | /* | |
244 | * BA_ACC payload. | |
245 | */ | |
246 | struct fc_ba_acc { | |
247 | __u8 ba_seq_id_val; /* SEQ_ID validity */ | |
248 | #define FC_BA_SEQ_ID_VAL 0x80 | |
249 | __u8 ba_seq_id; /* SEQ_ID of seq last deliverable */ | |
250 | __u8 ba_resvd[2]; /* reserved */ | |
251 | __be16 ba_ox_id; /* OX_ID for aborted seq or exch */ | |
252 | __be16 ba_rx_id; /* RX_ID for aborted seq or exch */ | |
253 | __be16 ba_low_seq_cnt; /* low SEQ_CNT of aborted seq */ | |
254 | __be16 ba_high_seq_cnt; /* high SEQ_CNT of aborted seq */ | |
255 | }; | |
256 | ||
257 | /* | |
258 | * BA_RJT: Basic Reject payload. | |
259 | */ | |
260 | struct fc_ba_rjt { | |
261 | __u8 br_resvd; /* reserved */ | |
262 | __u8 br_reason; /* reason code */ | |
263 | __u8 br_explan; /* reason explanation */ | |
264 | __u8 br_vendor; /* vendor unique code */ | |
265 | }; | |
266 | ||
267 | /* | |
268 | * BA_RJT reason codes. | |
269 | * From FS-2. | |
270 | */ | |
271 | enum fc_ba_rjt_reason { | |
272 | FC_BA_RJT_NONE = 0, /* in software this means no reject */ | |
273 | FC_BA_RJT_INVL_CMD = 0x01, /* invalid command code */ | |
274 | FC_BA_RJT_LOG_ERR = 0x03, /* logical error */ | |
275 | FC_BA_RJT_LOG_BUSY = 0x05, /* logical busy */ | |
276 | FC_BA_RJT_PROTO_ERR = 0x07, /* protocol error */ | |
277 | FC_BA_RJT_UNABLE = 0x09, /* unable to perform request */ | |
278 | FC_BA_RJT_VENDOR = 0xff, /* vendor-specific (see br_vendor) */ | |
279 | }; | |
280 | ||
281 | /* | |
282 | * BA_RJT reason code explanations. | |
283 | */ | |
284 | enum fc_ba_rjt_explan { | |
285 | FC_BA_RJT_EXP_NONE = 0x00, /* no additional expanation */ | |
286 | FC_BA_RJT_INV_XID = 0x03, /* invalid OX_ID-RX_ID combination */ | |
287 | FC_BA_RJT_ABT = 0x05, /* sequence aborted, no seq info */ | |
288 | }; | |
289 | ||
290 | /* | |
291 | * P_RJT or F_RJT: Port Reject or Fabric Reject parameter field. | |
292 | */ | |
293 | struct fc_pf_rjt { | |
294 | __u8 rj_action; /* reserved */ | |
295 | __u8 rj_reason; /* reason code */ | |
296 | __u8 rj_resvd; /* reserved */ | |
297 | __u8 rj_vendor; /* vendor unique code */ | |
298 | }; | |
299 | ||
300 | /* | |
301 | * P_RJT and F_RJT reject reason codes. | |
302 | */ | |
303 | enum fc_pf_rjt_reason { | |
304 | FC_RJT_NONE = 0, /* non-reject (reserved by standard) */ | |
305 | FC_RJT_INVL_DID = 0x01, /* invalid destination ID */ | |
306 | FC_RJT_INVL_SID = 0x02, /* invalid source ID */ | |
307 | FC_RJT_P_UNAV_T = 0x03, /* port unavailable, temporary */ | |
308 | FC_RJT_P_UNAV = 0x04, /* port unavailable, permanent */ | |
309 | FC_RJT_CLS_UNSUP = 0x05, /* class not supported */ | |
310 | FC_RJT_DEL_USAGE = 0x06, /* delimiter usage error */ | |
311 | FC_RJT_TYPE_UNSUP = 0x07, /* type not supported */ | |
312 | FC_RJT_LINK_CTL = 0x08, /* invalid link control */ | |
313 | FC_RJT_R_CTL = 0x09, /* invalid R_CTL field */ | |
314 | FC_RJT_F_CTL = 0x0a, /* invalid F_CTL field */ | |
315 | FC_RJT_OX_ID = 0x0b, /* invalid originator exchange ID */ | |
316 | FC_RJT_RX_ID = 0x0c, /* invalid responder exchange ID */ | |
317 | FC_RJT_SEQ_ID = 0x0d, /* invalid sequence ID */ | |
318 | FC_RJT_DF_CTL = 0x0e, /* invalid DF_CTL field */ | |
319 | FC_RJT_SEQ_CNT = 0x0f, /* invalid SEQ_CNT field */ | |
320 | FC_RJT_PARAM = 0x10, /* invalid parameter field */ | |
321 | FC_RJT_EXCH_ERR = 0x11, /* exchange error */ | |
322 | FC_RJT_PROTO = 0x12, /* protocol error */ | |
323 | FC_RJT_LEN = 0x13, /* incorrect length */ | |
324 | FC_RJT_UNEXP_ACK = 0x14, /* unexpected ACK */ | |
325 | FC_RJT_FAB_CLASS = 0x15, /* class unsupported by fabric entity */ | |
326 | FC_RJT_LOGI_REQ = 0x16, /* login required */ | |
327 | FC_RJT_SEQ_XS = 0x17, /* excessive sequences attempted */ | |
328 | FC_RJT_EXCH_EST = 0x18, /* unable to establish exchange */ | |
329 | FC_RJT_FAB_UNAV = 0x1a, /* fabric unavailable */ | |
330 | FC_RJT_VC_ID = 0x1b, /* invalid VC_ID (class 4) */ | |
331 | FC_RJT_CS_CTL = 0x1c, /* invalid CS_CTL field */ | |
332 | FC_RJT_INSUF_RES = 0x1d, /* insuff. resources for VC (Class 4) */ | |
333 | FC_RJT_INVL_CLS = 0x1f, /* invalid class of service */ | |
334 | FC_RJT_PREEMT_RJT = 0x20, /* preemption request rejected */ | |
335 | FC_RJT_PREEMT_DIS = 0x21, /* preemption not enabled */ | |
336 | FC_RJT_MCAST_ERR = 0x22, /* multicast error */ | |
337 | FC_RJT_MCAST_ET = 0x23, /* multicast error terminate */ | |
338 | FC_RJT_PRLI_REQ = 0x24, /* process login required */ | |
339 | FC_RJT_INVL_ATT = 0x25, /* invalid attachment */ | |
340 | FC_RJT_VENDOR = 0xff, /* vendor specific reject */ | |
341 | }; | |
342 | ||
6755db1c CL |
343 | /* default timeout values */ |
344 | ||
345 | #define FC_DEF_E_D_TOV 2000UL | |
346 | #define FC_DEF_R_A_TOV 10000UL | |
347 | ||
f032c2f7 | 348 | #endif /* _FC_FS_H_ */ |