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fc_els.h
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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_ELS_H_
21 #define _FC_ELS_H_
22 
23 #include <linux/types.h>
24 
25 /*
26  * Fibre Channel Switch - Enhanced Link Services definitions.
27  * From T11 FC-LS Rev 1.2 June 7, 2005.
28  */
29 
30 /*
31  * ELS Command codes - byte 0 of the frame payload
32  */
33 enum fc_els_cmd {
34  ELS_LS_RJT = 0x01, /* ESL reject */
35  ELS_LS_ACC = 0x02, /* ESL Accept */
36  ELS_PLOGI = 0x03, /* N_Port login */
37  ELS_FLOGI = 0x04, /* F_Port login */
38  ELS_LOGO = 0x05, /* Logout */
39  ELS_ABTX = 0x06, /* Abort exchange - obsolete */
40  ELS_RCS = 0x07, /* read connection status */
41  ELS_RES = 0x08, /* read exchange status block */
42  ELS_RSS = 0x09, /* read sequence status block */
43  ELS_RSI = 0x0a, /* read sequence initiative */
44  ELS_ESTS = 0x0b, /* establish streaming */
45  ELS_ESTC = 0x0c, /* estimate credit */
46  ELS_ADVC = 0x0d, /* advise credit */
47  ELS_RTV = 0x0e, /* read timeout value */
48  ELS_RLS = 0x0f, /* read link error status block */
49  ELS_ECHO = 0x10, /* echo */
50  ELS_TEST = 0x11, /* test */
51  ELS_RRQ = 0x12, /* reinstate recovery qualifier */
52  ELS_REC = 0x13, /* read exchange concise */
53  ELS_SRR = 0x14, /* sequence retransmission request */
54  ELS_PRLI = 0x20, /* process login */
55  ELS_PRLO = 0x21, /* process logout */
56  ELS_SCN = 0x22, /* state change notification */
57  ELS_TPLS = 0x23, /* test process login state */
58  ELS_TPRLO = 0x24, /* third party process logout */
59  ELS_LCLM = 0x25, /* login control list mgmt (obs) */
60  ELS_GAID = 0x30, /* get alias_ID */
61  ELS_FACT = 0x31, /* fabric activate alias_id */
62  ELS_FDACDT = 0x32, /* fabric deactivate alias_id */
63  ELS_NACT = 0x33, /* N-port activate alias_id */
64  ELS_NDACT = 0x34, /* N-port deactivate alias_id */
65  ELS_QOSR = 0x40, /* quality of service request */
66  ELS_RVCS = 0x41, /* read virtual circuit status */
67  ELS_PDISC = 0x50, /* discover N_port service params */
68  ELS_FDISC = 0x51, /* discover F_port service params */
69  ELS_ADISC = 0x52, /* discover address */
70  ELS_RNC = 0x53, /* report node cap (obs) */
71  ELS_FARP_REQ = 0x54, /* FC ARP request */
72  ELS_FARP_REPL = 0x55, /* FC ARP reply */
73  ELS_RPS = 0x56, /* read port status block */
74  ELS_RPL = 0x57, /* read port list */
75  ELS_RPBC = 0x58, /* read port buffer condition */
76  ELS_FAN = 0x60, /* fabric address notification */
77  ELS_RSCN = 0x61, /* registered state change notification */
78  ELS_SCR = 0x62, /* state change registration */
79  ELS_RNFT = 0x63, /* report node FC-4 types */
80  ELS_CSR = 0x68, /* clock synch. request */
81  ELS_CSU = 0x69, /* clock synch. update */
82  ELS_LINIT = 0x70, /* loop initialize */
83  ELS_LSTS = 0x72, /* loop status */
84  ELS_RNID = 0x78, /* request node ID data */
85  ELS_RLIR = 0x79, /* registered link incident report */
86  ELS_LIRR = 0x7a, /* link incident record registration */
87  ELS_SRL = 0x7b, /* scan remote loop */
88  ELS_SBRP = 0x7c, /* set bit-error reporting params */
89  ELS_RPSC = 0x7d, /* report speed capabilities */
90  ELS_QSA = 0x7e, /* query security attributes */
91  ELS_EVFP = 0x7f, /* exchange virt. fabrics params */
92  ELS_LKA = 0x80, /* link keep-alive */
93  ELS_AUTH_ELS = 0x90, /* authentication ELS */
94 };
95 
96 /*
97  * Initializer useful for decoding table.
98  * Please keep this in sync with the above definitions.
99  */
100 #define FC_ELS_CMDS_INIT { \
101  [ELS_LS_RJT] = "LS_RJT", \
102  [ELS_LS_ACC] = "LS_ACC", \
103  [ELS_PLOGI] = "PLOGI", \
104  [ELS_FLOGI] = "FLOGI", \
105  [ELS_LOGO] = "LOGO", \
106  [ELS_ABTX] = "ABTX", \
107  [ELS_RCS] = "RCS", \
108  [ELS_RES] = "RES", \
109  [ELS_RSS] = "RSS", \
110  [ELS_RSI] = "RSI", \
111  [ELS_ESTS] = "ESTS", \
112  [ELS_ESTC] = "ESTC", \
113  [ELS_ADVC] = "ADVC", \
114  [ELS_RTV] = "RTV", \
115  [ELS_RLS] = "RLS", \
116  [ELS_ECHO] = "ECHO", \
117  [ELS_TEST] = "TEST", \
118  [ELS_RRQ] = "RRQ", \
119  [ELS_REC] = "REC", \
120  [ELS_SRR] = "SRR", \
121  [ELS_PRLI] = "PRLI", \
122  [ELS_PRLO] = "PRLO", \
123  [ELS_SCN] = "SCN", \
124  [ELS_TPLS] = "TPLS", \
125  [ELS_TPRLO] = "TPRLO", \
126  [ELS_LCLM] = "LCLM", \
127  [ELS_GAID] = "GAID", \
128  [ELS_FACT] = "FACT", \
129  [ELS_FDACDT] = "FDACDT", \
130  [ELS_NACT] = "NACT", \
131  [ELS_NDACT] = "NDACT", \
132  [ELS_QOSR] = "QOSR", \
133  [ELS_RVCS] = "RVCS", \
134  [ELS_PDISC] = "PDISC", \
135  [ELS_FDISC] = "FDISC", \
136  [ELS_ADISC] = "ADISC", \
137  [ELS_RNC] = "RNC", \
138  [ELS_FARP_REQ] = "FARP_REQ", \
139  [ELS_FARP_REPL] = "FARP_REPL", \
140  [ELS_RPS] = "RPS", \
141  [ELS_RPL] = "RPL", \
142  [ELS_RPBC] = "RPBC", \
143  [ELS_FAN] = "FAN", \
144  [ELS_RSCN] = "RSCN", \
145  [ELS_SCR] = "SCR", \
146  [ELS_RNFT] = "RNFT", \
147  [ELS_CSR] = "CSR", \
148  [ELS_CSU] = "CSU", \
149  [ELS_LINIT] = "LINIT", \
150  [ELS_LSTS] = "LSTS", \
151  [ELS_RNID] = "RNID", \
152  [ELS_RLIR] = "RLIR", \
153  [ELS_LIRR] = "LIRR", \
154  [ELS_SRL] = "SRL", \
155  [ELS_SBRP] = "SBRP", \
156  [ELS_RPSC] = "RPSC", \
157  [ELS_QSA] = "QSA", \
158  [ELS_EVFP] = "EVFP", \
159  [ELS_LKA] = "LKA", \
160  [ELS_AUTH_ELS] = "AUTH_ELS", \
161 }
162 
163 /*
164  * LS_ACC payload.
165  */
166 struct fc_els_ls_acc {
167  __u8 la_cmd; /* command code ELS_LS_ACC */
168  __u8 la_resv[3]; /* reserved */
169 };
170 
171 /*
172  * ELS reject payload.
173  */
174 struct fc_els_ls_rjt {
175  __u8 er_cmd; /* command code ELS_LS_RJT */
176  __u8 er_resv[4]; /* reserved must be zero */
177  __u8 er_reason; /* reason (enum fc_els_rjt_reason below) */
178  __u8 er_explan; /* explanation (enum fc_els_rjt_explan below) */
179  __u8 er_vendor; /* vendor specific code */
180 };
181 
182 /*
183  * ELS reject reason codes (er_reason).
184  */
185 enum fc_els_rjt_reason {
186  ELS_RJT_NONE = 0, /* no reject - not to be sent */
187  ELS_RJT_INVAL = 0x01, /* invalid ELS command code */
188  ELS_RJT_LOGIC = 0x03, /* logical error */
189  ELS_RJT_BUSY = 0x05, /* logical busy */
190  ELS_RJT_PROT = 0x07, /* protocol error */
191  ELS_RJT_UNAB = 0x09, /* unable to perform command request */
192  ELS_RJT_UNSUP = 0x0b, /* command not supported */
193  ELS_RJT_INPROG = 0x0e, /* command already in progress */
194  ELS_RJT_FIP = 0x20, /* FIP error */
195  ELS_RJT_VENDOR = 0xff, /* vendor specific error */
196 };
197 
198 
199 /*
200  * reason code explanation (er_explan).
201  */
202 enum fc_els_rjt_explan {
203  ELS_EXPL_NONE = 0x00, /* No additional explanation */
204  ELS_EXPL_SPP_OPT_ERR = 0x01, /* service parameter error - options */
205  ELS_EXPL_SPP_ICTL_ERR = 0x03, /* service parm error - initiator ctl */
206  ELS_EXPL_AH = 0x11, /* invalid association header */
207  ELS_EXPL_AH_REQ = 0x13, /* association_header required */
208  ELS_EXPL_SID = 0x15, /* invalid originator S_ID */
209  ELS_EXPL_OXID_RXID = 0x17, /* invalid OX_ID-RX_ID combination */
210  ELS_EXPL_INPROG = 0x19, /* Request already in progress */
211  ELS_EXPL_PLOGI_REQD = 0x1e, /* N_Port login required */
212  ELS_EXPL_INSUF_RES = 0x29, /* insufficient resources */
213  ELS_EXPL_UNAB_DATA = 0x2a, /* unable to supply requested data */
214  ELS_EXPL_UNSUPR = 0x2c, /* Request not supported */
215  ELS_EXPL_INV_LEN = 0x2d, /* Invalid payload length */
216  ELS_EXPL_NOT_NEIGHBOR = 0x62, /* VN2VN_Port not in neighbor set */
217  /* TBD - above definitions incomplete */
218 };
219 
220 /*
221  * Common service parameters (N ports).
222  */
223 struct fc_els_csp {
224  __u8 sp_hi_ver; /* highest version supported (obs.) */
225  __u8 sp_lo_ver; /* highest version supported (obs.) */
226  __be16 sp_bb_cred; /* buffer-to-buffer credits */
227  __be16 sp_features; /* common feature flags */
228  __be16 sp_bb_data; /* b-b state number and data field sz */
229  union {
230  struct {
231  __be16 _sp_tot_seq; /* total concurrent sequences */
232  __be16 _sp_rel_off; /* rel. offset by info cat */
233  } sp_plogi;
234  struct {
235  __be32 _sp_r_a_tov; /* resource alloc. timeout msec */
236  } sp_flogi_acc;
237  } sp_u;
238  __be32 sp_e_d_tov; /* error detect timeout value */
239 };
240 #define sp_tot_seq sp_u.sp_plogi._sp_tot_seq
241 #define sp_rel_off sp_u.sp_plogi._sp_rel_off
242 #define sp_r_a_tov sp_u.sp_flogi_acc._sp_r_a_tov
243 
244 #define FC_SP_BB_DATA_MASK 0xfff /* mask for data field size in sp_bb_data */
245 
246 /*
247  * Minimum and maximum values for max data field size in service parameters.
248  */
249 #define FC_SP_MIN_MAX_PAYLOAD FC_MIN_MAX_PAYLOAD
250 #define FC_SP_MAX_MAX_PAYLOAD FC_MAX_PAYLOAD
251 
252 /*
253  * sp_features
254  */
255 #define FC_SP_FT_NPIV 0x8000 /* multiple N_Port_ID support (FLOGI) */
256 #define FC_SP_FT_CIRO 0x8000 /* continuously increasing rel off (PLOGI) */
257 #define FC_SP_FT_CLAD 0x8000 /* clean address (in FLOGI LS_ACC) */
258 #define FC_SP_FT_RAND 0x4000 /* random relative offset */
259 #define FC_SP_FT_VAL 0x2000 /* valid vendor version level */
260 #define FC_SP_FT_NPIV_ACC 0x2000 /* NPIV assignment (FLOGI LS_ACC) */
261 #define FC_SP_FT_FPORT 0x1000 /* F port (1) vs. N port (0) */
262 #define FC_SP_FT_ABB 0x0800 /* alternate BB_credit management */
263 #define FC_SP_FT_EDTR 0x0400 /* E_D_TOV Resolution is nanoseconds */
264 #define FC_SP_FT_MCAST 0x0200 /* multicast */
265 #define FC_SP_FT_BCAST 0x0100 /* broadcast */
266 #define FC_SP_FT_HUNT 0x0080 /* hunt group */
267 #define FC_SP_FT_SIMP 0x0040 /* dedicated simplex */
268 #define FC_SP_FT_SEC 0x0020 /* reserved for security */
269 #define FC_SP_FT_CSYN 0x0010 /* clock synch. supported */
270 #define FC_SP_FT_RTTOV 0x0008 /* R_T_TOV value 100 uS, else 100 mS */
271 #define FC_SP_FT_HALF 0x0004 /* dynamic half duplex */
272 #define FC_SP_FT_SEQC 0x0002 /* SEQ_CNT */
273 #define FC_SP_FT_PAYL 0x0001 /* FLOGI payload length 256, else 116 */
274 
275 /*
276  * Class-specific service parameters.
277  */
278 struct fc_els_cssp {
279  __be16 cp_class; /* class flags */
280  __be16 cp_init; /* initiator flags */
281  __be16 cp_recip; /* recipient flags */
282  __be16 cp_rdfs; /* receive data field size */
283  __be16 cp_con_seq; /* concurrent sequences */
284  __be16 cp_ee_cred; /* N-port end-to-end credit */
285  __u8 cp_resv1; /* reserved */
286  __u8 cp_open_seq; /* open sequences per exchange */
287  __u8 _cp_resv2[2]; /* reserved */
288 };
289 
290 /*
291  * cp_class flags.
292  */
293 #define FC_CPC_VALID 0x8000 /* class valid */
294 #define FC_CPC_IMIX 0x4000 /* intermix mode */
295 #define FC_CPC_SEQ 0x0800 /* sequential delivery */
296 #define FC_CPC_CAMP 0x0200 /* camp-on */
297 #define FC_CPC_PRI 0x0080 /* priority */
298 
299 /*
300  * cp_init flags.
301  * (TBD: not all flags defined here).
302  */
303 #define FC_CPI_CSYN 0x0010 /* clock synch. capable */
304 
305 /*
306  * cp_recip flags.
307  */
308 #define FC_CPR_CSYN 0x0008 /* clock synch. capable */
309 
310 /*
311  * NFC_ELS_FLOGI: Fabric login request.
312  * NFC_ELS_PLOGI: Port login request (same format).
313  */
314 struct fc_els_flogi {
315  __u8 fl_cmd; /* command */
316  __u8 _fl_resvd[3]; /* must be zero */
317  struct fc_els_csp fl_csp; /* common service parameters */
318  __be64 fl_wwpn; /* port name */
319  __be64 fl_wwnn; /* node name */
320  struct fc_els_cssp fl_cssp[4]; /* class 1-4 service parameters */
321  __u8 fl_vend[16]; /* vendor version level */
322 } __attribute__((__packed__));
323 
324 /*
325  * Process login service parameter page.
326  */
327 struct fc_els_spp {
328  __u8 spp_type; /* type code or common service params */
329  __u8 spp_type_ext; /* type code extension */
330  __u8 spp_flags;
331  __u8 _spp_resvd;
332  __be32 spp_orig_pa; /* originator process associator */
333  __be32 spp_resp_pa; /* responder process associator */
334  __be32 spp_params; /* service parameters */
335 };
336 
337 /*
338  * spp_flags.
339  */
340 #define FC_SPP_OPA_VAL 0x80 /* originator proc. assoc. valid */
341 #define FC_SPP_RPA_VAL 0x40 /* responder proc. assoc. valid */
342 #define FC_SPP_EST_IMG_PAIR 0x20 /* establish image pair */
343 #define FC_SPP_RESP_MASK 0x0f /* mask for response code (below) */
344 
345 /*
346  * SPP response code in spp_flags - lower 4 bits.
347  */
348 enum fc_els_spp_resp {
349  FC_SPP_RESP_ACK = 1, /* request executed */
350  FC_SPP_RESP_RES = 2, /* unable due to lack of resources */
351  FC_SPP_RESP_INIT = 3, /* initialization not complete */
352  FC_SPP_RESP_NO_PA = 4, /* unknown process associator */
353  FC_SPP_RESP_CONF = 5, /* configuration precludes image pair */
354  FC_SPP_RESP_COND = 6, /* request completed conditionally */
355  FC_SPP_RESP_MULT = 7, /* unable to handle multiple SPPs */
356  FC_SPP_RESP_INVL = 8, /* SPP is invalid */
357 };
358 
359 /*
360  * ELS_RRQ - Reinstate Recovery Qualifier
361  */
362 struct fc_els_rrq {
363  __u8 rrq_cmd; /* command (0x12) */
364  __u8 rrq_zero[3]; /* specified as zero - part of cmd */
365  __u8 rrq_resvd; /* reserved */
366  __u8 rrq_s_id[3]; /* originator FID */
367  __be16 rrq_ox_id; /* originator exchange ID */
368  __be16 rrq_rx_id; /* responders exchange ID */
369 };
370 
371 /*
372  * ELS_REC - Read exchange concise.
373  */
374 struct fc_els_rec {
375  __u8 rec_cmd; /* command (0x13) */
376  __u8 rec_zero[3]; /* specified as zero - part of cmd */
377  __u8 rec_resvd; /* reserved */
378  __u8 rec_s_id[3]; /* originator FID */
379  __be16 rec_ox_id; /* originator exchange ID */
380  __be16 rec_rx_id; /* responders exchange ID */
381 };
382 
383 /*
384  * ELS_REC LS_ACC payload.
385  */
386 struct fc_els_rec_acc {
387  __u8 reca_cmd; /* accept (0x02) */
388  __u8 reca_zero[3]; /* specified as zero - part of cmd */
389  __be16 reca_ox_id; /* originator exchange ID */
390  __be16 reca_rx_id; /* responders exchange ID */
391  __u8 reca_resvd1; /* reserved */
392  __u8 reca_ofid[3]; /* originator FID */
393  __u8 reca_resvd2; /* reserved */
394  __u8 reca_rfid[3]; /* responder FID */
395  __be32 reca_fc4value; /* FC4 value */
396  __be32 reca_e_stat; /* ESB (exchange status block) status */
397 };
398 
399 /*
400  * ELS_PRLI - Process login request and response.
401  */
402 struct fc_els_prli {
403  __u8 prli_cmd; /* command */
404  __u8 prli_spp_len; /* length of each serv. parm. page */
405  __be16 prli_len; /* length of entire payload */
406  /* service parameter pages follow */
407 };
408 
409 /*
410  * ELS_PRLO - Process logout request and response.
411  */
412 struct fc_els_prlo {
413  __u8 prlo_cmd; /* command */
414  __u8 prlo_obs; /* obsolete, but shall be set to 10h */
415  __be16 prlo_len; /* payload length */
416 };
417 
418 /*
419  * ELS_ADISC payload
420  */
421 struct fc_els_adisc {
422  __u8 adisc_cmd;
423  __u8 adisc_resv[3];
424  __u8 adisc_resv1;
425  __u8 adisc_hard_addr[3];
426  __be64 adisc_wwpn;
427  __be64 adisc_wwnn;
428  __u8 adisc_resv2;
429  __u8 adisc_port_id[3];
430 } __attribute__((__packed__));
431 
432 /*
433  * ELS_LOGO - process or fabric logout.
434  */
435 struct fc_els_logo {
436  __u8 fl_cmd; /* command code */
437  __u8 fl_zero[3]; /* specified as zero - part of cmd */
438  __u8 fl_resvd; /* reserved */
439  __u8 fl_n_port_id[3];/* N port ID */
440  __be64 fl_n_port_wwn; /* port name */
441 };
442 
443 /*
444  * ELS_RTV - read timeout value.
445  */
446 struct fc_els_rtv {
447  __u8 rtv_cmd; /* command code 0x0e */
448  __u8 rtv_zero[3]; /* specified as zero - part of cmd */
449 };
450 
451 /*
452  * LS_ACC for ELS_RTV - read timeout value.
453  */
454 struct fc_els_rtv_acc {
455  __u8 rtv_cmd; /* command code 0x02 */
456  __u8 rtv_zero[3]; /* specified as zero - part of cmd */
457  __be32 rtv_r_a_tov; /* resource allocation timeout value */
458  __be32 rtv_e_d_tov; /* error detection timeout value */
459  __be32 rtv_toq; /* timeout qualifier (see below) */
460 };
461 
462 /*
463  * rtv_toq bits.
464  */
465 #define FC_ELS_RTV_EDRES (1 << 26) /* E_D_TOV resolution is nS else mS */
466 #define FC_ELS_RTV_RTTOV (1 << 19) /* R_T_TOV is 100 uS else 100 mS */
467 
468 /*
469  * ELS_SCR - state change registration payload.
470  */
471 struct fc_els_scr {
472  __u8 scr_cmd; /* command code */
473  __u8 scr_resv[6]; /* reserved */
474  __u8 scr_reg_func; /* registration function (see below) */
475 };
476 
477 enum fc_els_scr_func {
478  ELS_SCRF_FAB = 1, /* fabric-detected registration */
479  ELS_SCRF_NPORT = 2, /* Nx_Port-detected registration */
480  ELS_SCRF_FULL = 3, /* full registration */
481  ELS_SCRF_CLEAR = 255, /* remove any current registrations */
482 };
483 
484 /*
485  * ELS_RSCN - registered state change notification payload.
486  */
487 struct fc_els_rscn {
488  __u8 rscn_cmd; /* RSCN opcode (0x61) */
489  __u8 rscn_page_len; /* page length (4) */
490  __be16 rscn_plen; /* payload length including this word */
491 
492  /* followed by 4-byte generic affected Port_ID pages */
493 };
494 
495 struct fc_els_rscn_page {
496  __u8 rscn_page_flags; /* event and address format */
497  __u8 rscn_fid[3]; /* fabric ID */
498 };
499 
500 #define ELS_RSCN_EV_QUAL_BIT 2 /* shift count for event qualifier */
501 #define ELS_RSCN_EV_QUAL_MASK 0xf /* mask for event qualifier */
502 #define ELS_RSCN_ADDR_FMT_BIT 0 /* shift count for address format */
503 #define ELS_RSCN_ADDR_FMT_MASK 0x3 /* mask for address format */
504 
505 enum fc_els_rscn_ev_qual {
506  ELS_EV_QUAL_NONE = 0, /* unspecified */
507  ELS_EV_QUAL_NS_OBJ = 1, /* changed name server object */
508  ELS_EV_QUAL_PORT_ATTR = 2, /* changed port attribute */
509  ELS_EV_QUAL_SERV_OBJ = 3, /* changed service object */
510  ELS_EV_QUAL_SW_CONFIG = 4, /* changed switch configuration */
511  ELS_EV_QUAL_REM_OBJ = 5, /* removed object */
512 };
513 
514 enum fc_els_rscn_addr_fmt {
515  ELS_ADDR_FMT_PORT = 0, /* rscn_fid is a port address */
516  ELS_ADDR_FMT_AREA = 1, /* rscn_fid is a area address */
517  ELS_ADDR_FMT_DOM = 2, /* rscn_fid is a domain address */
518  ELS_ADDR_FMT_FAB = 3, /* anything on fabric may have changed */
519 };
520 
521 /*
522  * ELS_RNID - request Node ID.
523  */
524 struct fc_els_rnid {
525  __u8 rnid_cmd; /* RNID opcode (0x78) */
526  __u8 rnid_resv[3]; /* reserved */
527  __u8 rnid_fmt; /* data format */
528  __u8 rnid_resv2[3]; /* reserved */
529 };
530 
531 /*
532  * Node Identification Data formats (rnid_fmt)
533  */
534 enum fc_els_rnid_fmt {
535  ELS_RNIDF_NONE = 0, /* no specific identification data */
536  ELS_RNIDF_GEN = 0xdf, /* general topology discovery format */
537 };
538 
539 /*
540  * ELS_RNID response.
541  */
542 struct fc_els_rnid_resp {
543  __u8 rnid_cmd; /* response code (LS_ACC) */
544  __u8 rnid_resv[3]; /* reserved */
545  __u8 rnid_fmt; /* data format */
546  __u8 rnid_cid_len; /* common ID data length */
547  __u8 rnid_resv2; /* reserved */
548  __u8 rnid_sid_len; /* specific ID data length */
549 };
550 
551 struct fc_els_rnid_cid {
552  __be64 rnid_wwpn; /* N port name */
553  __be64 rnid_wwnn; /* node name */
554 };
555 
556 struct fc_els_rnid_gen {
557  __u8 rnid_vend_id[16]; /* vendor-unique ID */
558  __be32 rnid_atype; /* associated type (see below) */
559  __be32 rnid_phys_port; /* physical port number */
560  __be32 rnid_att_nodes; /* number of attached nodes */
561  __u8 rnid_node_mgmt; /* node management (see below) */
562  __u8 rnid_ip_ver; /* IP version (see below) */
563  __be16 rnid_prot_port; /* UDP / TCP port number */
564  __be32 rnid_ip_addr[4]; /* IP address */
565  __u8 rnid_resvd[2]; /* reserved */
566  __be16 rnid_vend_spec; /* vendor-specific field */
567 };
568 
569 enum fc_els_rnid_atype {
570  ELS_RNIDA_UNK = 0x01, /* unknown */
571  ELS_RNIDA_OTHER = 0x02, /* none of the following */
572  ELS_RNIDA_HUB = 0x03,
573  ELS_RNIDA_SWITCH = 0x04,
574  ELS_RNIDA_GATEWAY = 0x05,
575  ELS_RNIDA_CONV = 0x06, /* Obsolete, do not use this value */
576  ELS_RNIDA_HBA = 0x07, /* Obsolete, do not use this value */
577  ELS_RNIDA_PROXY = 0x08, /* Obsolete, do not use this value */
578  ELS_RNIDA_STORAGE = 0x09,
579  ELS_RNIDA_HOST = 0x0a,
580  ELS_RNIDA_SUBSYS = 0x0b, /* storage subsystem (e.g., RAID) */
581  ELS_RNIDA_ACCESS = 0x0e, /* access device (e.g. media changer) */
582  ELS_RNIDA_NAS = 0x11, /* NAS server */
583  ELS_RNIDA_BRIDGE = 0x12, /* bridge */
584  ELS_RNIDA_VIRT = 0x13, /* virtualization device */
585  ELS_RNIDA_MF = 0xff, /* multifunction device (bits below) */
586  ELS_RNIDA_MF_HUB = 1UL << 31, /* hub */
587  ELS_RNIDA_MF_SW = 1UL << 30, /* switch */
588  ELS_RNIDA_MF_GW = 1UL << 29, /* gateway */
589  ELS_RNIDA_MF_ST = 1UL << 28, /* storage */
590  ELS_RNIDA_MF_HOST = 1UL << 27, /* host */
591  ELS_RNIDA_MF_SUB = 1UL << 26, /* storage subsystem */
592  ELS_RNIDA_MF_ACC = 1UL << 25, /* storage access dev */
593  ELS_RNIDA_MF_WDM = 1UL << 24, /* wavelength division mux */
594  ELS_RNIDA_MF_NAS = 1UL << 23, /* NAS server */
595  ELS_RNIDA_MF_BR = 1UL << 22, /* bridge */
596  ELS_RNIDA_MF_VIRT = 1UL << 21, /* virtualization device */
597 };
598 
599 enum fc_els_rnid_mgmt {
600  ELS_RNIDM_SNMP = 0,
601  ELS_RNIDM_TELNET = 1,
602  ELS_RNIDM_HTTP = 2,
603  ELS_RNIDM_HTTPS = 3,
604  ELS_RNIDM_XML = 4, /* HTTP + XML */
605 };
606 
607 enum fc_els_rnid_ipver {
608  ELS_RNIDIP_NONE = 0, /* no IP support or node mgmt. */
609  ELS_RNIDIP_V4 = 1, /* IPv4 */
610  ELS_RNIDIP_V6 = 2, /* IPv6 */
611 };
612 
613 /*
614  * ELS RPL - Read Port List.
615  */
616 struct fc_els_rpl {
617  __u8 rpl_cmd; /* command */
618  __u8 rpl_resv[5]; /* reserved - must be zero */
619  __be16 rpl_max_size; /* maximum response size or zero */
620  __u8 rpl_resv1; /* reserved - must be zero */
621  __u8 rpl_index[3]; /* starting index */
622 };
623 
624 /*
625  * Port number block in RPL response.
626  */
627 struct fc_els_pnb {
628  __be32 pnb_phys_pn; /* physical port number */
629  __u8 pnb_resv; /* reserved */
630  __u8 pnb_port_id[3]; /* port ID */
631  __be64 pnb_wwpn; /* port name */
632 };
633 
634 /*
635  * RPL LS_ACC response.
636  */
637 struct fc_els_rpl_resp {
638  __u8 rpl_cmd; /* ELS_LS_ACC */
639  __u8 rpl_resv1; /* reserved - must be zero */
640  __be16 rpl_plen; /* payload length */
641  __u8 rpl_resv2; /* reserved - must be zero */
642  __u8 rpl_llen[3]; /* list length */
643  __u8 rpl_resv3; /* reserved - must be zero */
644  __u8 rpl_index[3]; /* starting index */
645  struct fc_els_pnb rpl_pnb[1]; /* variable number of PNBs */
646 };
647 
648 /*
649  * Link Error Status Block.
650  */
651 struct fc_els_lesb {
652  __be32 lesb_link_fail; /* link failure count */
653  __be32 lesb_sync_loss; /* loss of synchronization count */
654  __be32 lesb_sig_loss; /* loss of signal count */
655  __be32 lesb_prim_err; /* primitive sequence error count */
656  __be32 lesb_inv_word; /* invalid transmission word count */
657  __be32 lesb_inv_crc; /* invalid CRC count */
658 };
659 
660 /*
661  * ELS RPS - Read Port Status Block request.
662  */
663 struct fc_els_rps {
664  __u8 rps_cmd; /* command */
665  __u8 rps_resv[2]; /* reserved - must be zero */
666  __u8 rps_flag; /* flag - see below */
667  __be64 rps_port_spec; /* port selection */
668 };
669 
670 enum fc_els_rps_flag {
671  FC_ELS_RPS_DID = 0x00, /* port identified by D_ID of req. */
672  FC_ELS_RPS_PPN = 0x01, /* port_spec is physical port number */
673  FC_ELS_RPS_WWPN = 0x02, /* port_spec is port WWN */
674 };
675 
676 /*
677  * ELS RPS LS_ACC response.
678  */
679 struct fc_els_rps_resp {
680  __u8 rps_cmd; /* command - LS_ACC */
681  __u8 rps_resv[2]; /* reserved - must be zero */
682  __u8 rps_flag; /* flag - see below */
683  __u8 rps_resv2[2]; /* reserved */
684  __be16 rps_status; /* port status - see below */
685  struct fc_els_lesb rps_lesb; /* link error status block */
686 };
687 
688 enum fc_els_rps_resp_flag {
689  FC_ELS_RPS_LPEV = 0x01, /* L_port extension valid */
690 };
691 
692 enum fc_els_rps_resp_status {
693  FC_ELS_RPS_PTP = 1 << 5, /* point-to-point connection */
694  FC_ELS_RPS_LOOP = 1 << 4, /* loop mode */
695  FC_ELS_RPS_FAB = 1 << 3, /* fabric present */
696  FC_ELS_RPS_NO_SIG = 1 << 2, /* loss of signal */
697  FC_ELS_RPS_NO_SYNC = 1 << 1, /* loss of synchronization */
698  FC_ELS_RPS_RESET = 1 << 0, /* in link reset protocol */
699 };
700 
701 /*
702  * ELS LIRR - Link Incident Record Registration request.
703  */
704 struct fc_els_lirr {
705  __u8 lirr_cmd; /* command */
706  __u8 lirr_resv[3]; /* reserved - must be zero */
707  __u8 lirr_func; /* registration function */
708  __u8 lirr_fmt; /* FC-4 type of RLIR requested */
709  __u8 lirr_resv2[2]; /* reserved - must be zero */
710 };
711 
712 enum fc_els_lirr_func {
713  ELS_LIRR_SET_COND = 0x01, /* set - conditionally receive */
714  ELS_LIRR_SET_UNCOND = 0x02, /* set - unconditionally receive */
715  ELS_LIRR_CLEAR = 0xff /* clear registration */
716 };
717 
718 /*
719  * ELS SRL - Scan Remote Loop request.
720  */
721 struct fc_els_srl {
722  __u8 srl_cmd; /* command */
723  __u8 srl_resv[3]; /* reserved - must be zero */
724  __u8 srl_flag; /* flag - see below */
725  __u8 srl_flag_param[3]; /* flag parameter */
726 };
727 
728 enum fc_els_srl_flag {
729  FC_ELS_SRL_ALL = 0x00, /* scan all FL ports */
730  FC_ELS_SRL_ONE = 0x01, /* scan specified loop */
731  FC_ELS_SRL_EN_PER = 0x02, /* enable periodic scanning (param) */
732  FC_ELS_SRL_DIS_PER = 0x03, /* disable periodic scanning */
733 };
734 
735 /*
736  * ELS RLS - Read Link Error Status Block request.
737  */
738 struct fc_els_rls {
739  __u8 rls_cmd; /* command */
740  __u8 rls_resv[4]; /* reserved - must be zero */
741  __u8 rls_port_id[3]; /* port ID */
742 };
743 
744 /*
745  * ELS RLS LS_ACC Response.
746  */
747 struct fc_els_rls_resp {
748  __u8 rls_cmd; /* ELS_LS_ACC */
749  __u8 rls_resv[3]; /* reserved - must be zero */
750  struct fc_els_lesb rls_lesb; /* link error status block */
751 };
752 
753 /*
754  * ELS RLIR - Registered Link Incident Report.
755  * This is followed by the CLIR and the CLID, described below.
756  */
757 struct fc_els_rlir {
758  __u8 rlir_cmd; /* command */
759  __u8 rlir_resv[3]; /* reserved - must be zero */
760  __u8 rlir_fmt; /* format (FC4-type if type specific) */
761  __u8 rlir_clr_len; /* common link incident record length */
762  __u8 rlir_cld_len; /* common link incident desc. length */
763  __u8 rlir_slr_len; /* spec. link incident record length */
764 };
765 
766 /*
767  * CLIR - Common Link Incident Record Data. - Sent via RLIR.
768  */
769 struct fc_els_clir {
770  __be64 clir_wwpn; /* incident port name */
771  __be64 clir_wwnn; /* incident port node name */
772  __u8 clir_port_type; /* incident port type */
773  __u8 clir_port_id[3]; /* incident port ID */
774 
775  __be64 clir_conn_wwpn; /* connected port name */
776  __be64 clir_conn_wwnn; /* connected node name */
777  __be64 clir_fab_name; /* fabric name */
778  __be32 clir_phys_port; /* physical port number */
779  __be32 clir_trans_id; /* transaction ID */
780  __u8 clir_resv[3]; /* reserved */
781  __u8 clir_ts_fmt; /* time stamp format */
782  __be64 clir_timestamp; /* time stamp */
783 };
784 
785 /*
786  * CLIR clir_ts_fmt - time stamp format values.
787  */
788 enum fc_els_clir_ts_fmt {
789  ELS_CLIR_TS_UNKNOWN = 0, /* time stamp field unknown */
790  ELS_CLIR_TS_SEC_FRAC = 1, /* time in seconds and fractions */
791  ELS_CLIR_TS_CSU = 2, /* time in clock synch update format */
792 };
793 
794 /*
795  * Common Link Incident Descriptor - sent via RLIR.
796  */
797 struct fc_els_clid {
798  __u8 clid_iq; /* incident qualifier flags */
799  __u8 clid_ic; /* incident code */
800  __be16 clid_epai; /* domain/area of ISL */
801 };
802 
803 /*
804  * CLID incident qualifier flags.
805  */
806 enum fc_els_clid_iq {
807  ELS_CLID_SWITCH = 0x20, /* incident port is a switch node */
808  ELS_CLID_E_PORT = 0x10, /* incident is an ISL (E) port */
809  ELS_CLID_SEV_MASK = 0x0c, /* severity 2-bit field mask */
810  ELS_CLID_SEV_INFO = 0x00, /* report is informational */
811  ELS_CLID_SEV_INOP = 0x08, /* link not operational */
812  ELS_CLID_SEV_DEG = 0x04, /* link degraded but operational */
813  ELS_CLID_LASER = 0x02, /* subassembly is a laser */
814  ELS_CLID_FRU = 0x01, /* format can identify a FRU */
815 };
816 
817 /*
818  * CLID incident code.
819  */
820 enum fc_els_clid_ic {
821  ELS_CLID_IC_IMPL = 1, /* implicit incident */
822  ELS_CLID_IC_BER = 2, /* bit-error-rate threshold exceeded */
823  ELS_CLID_IC_LOS = 3, /* loss of synch or signal */
824  ELS_CLID_IC_NOS = 4, /* non-operational primitive sequence */
825  ELS_CLID_IC_PST = 5, /* primitive sequence timeout */
826  ELS_CLID_IC_INVAL = 6, /* invalid primitive sequence */
827  ELS_CLID_IC_LOOP_TO = 7, /* loop initialization time out */
828  ELS_CLID_IC_LIP = 8, /* receiving LIP */
829 };
830 
831 #endif /* _FC_ELS_H_ */
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