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7bb5fdc2 TS |
1 | /* |
2 | * Kernel CAPI interface for the Gigaset driver | |
3 | * | |
4 | * Copyright (c) 2009 by Tilman Schmidt <tilman@imap.cc>. | |
5 | * | |
6 | * ===================================================================== | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License as | |
9 | * published by the Free Software Foundation; either version 2 of | |
10 | * the License, or (at your option) any later version. | |
11 | * ===================================================================== | |
12 | */ | |
13 | ||
14 | #include "gigaset.h" | |
15 | #include <linux/ctype.h> | |
16 | #include <linux/isdn/capilli.h> | |
17 | #include <linux/isdn/capicmd.h> | |
18 | #include <linux/isdn/capiutil.h> | |
19 | ||
20 | /* missing from kernelcapi.h */ | |
21 | #define CapiNcpiNotSupportedByProtocol 0x0001 | |
22 | #define CapiFlagsNotSupportedByProtocol 0x0002 | |
23 | #define CapiAlertAlreadySent 0x0003 | |
24 | #define CapiFacilitySpecificFunctionNotSupported 0x3011 | |
25 | ||
26 | /* missing from capicmd.h */ | |
27 | #define CAPI_CONNECT_IND_BASELEN (CAPI_MSG_BASELEN+4+2+8*1) | |
28 | #define CAPI_CONNECT_ACTIVE_IND_BASELEN (CAPI_MSG_BASELEN+4+3*1) | |
29 | #define CAPI_CONNECT_B3_IND_BASELEN (CAPI_MSG_BASELEN+4+1) | |
30 | #define CAPI_CONNECT_B3_ACTIVE_IND_BASELEN (CAPI_MSG_BASELEN+4+1) | |
31 | #define CAPI_DATA_B3_REQ_LEN64 (CAPI_MSG_BASELEN+4+4+2+2+2+8) | |
32 | #define CAPI_DATA_B3_CONF_LEN (CAPI_MSG_BASELEN+4+2+2) | |
33 | #define CAPI_DISCONNECT_IND_LEN (CAPI_MSG_BASELEN+4+2) | |
34 | #define CAPI_DISCONNECT_B3_IND_BASELEN (CAPI_MSG_BASELEN+4+2+1) | |
35 | #define CAPI_FACILITY_CONF_BASELEN (CAPI_MSG_BASELEN+4+2+2+1) | |
36 | /* most _CONF messages contain only Controller/PLCI/NCCI and Info parameters */ | |
37 | #define CAPI_STDCONF_LEN (CAPI_MSG_BASELEN+4+2) | |
38 | ||
39 | #define CAPI_FACILITY_HANDSET 0x0000 | |
40 | #define CAPI_FACILITY_DTMF 0x0001 | |
41 | #define CAPI_FACILITY_V42BIS 0x0002 | |
42 | #define CAPI_FACILITY_SUPPSVC 0x0003 | |
43 | #define CAPI_FACILITY_WAKEUP 0x0004 | |
44 | #define CAPI_FACILITY_LI 0x0005 | |
45 | ||
46 | #define CAPI_SUPPSVC_GETSUPPORTED 0x0000 | |
47 | ||
48 | /* missing from capiutil.h */ | |
49 | #define CAPIMSG_PLCI_PART(m) CAPIMSG_U8(m, 9) | |
50 | #define CAPIMSG_NCCI_PART(m) CAPIMSG_U16(m, 10) | |
51 | #define CAPIMSG_HANDLE_REQ(m) CAPIMSG_U16(m, 18) /* DATA_B3_REQ/_IND only! */ | |
52 | #define CAPIMSG_FLAGS(m) CAPIMSG_U16(m, 20) | |
53 | #define CAPIMSG_SETCONTROLLER(m, contr) capimsg_setu8(m, 8, contr) | |
54 | #define CAPIMSG_SETPLCI_PART(m, plci) capimsg_setu8(m, 9, plci) | |
55 | #define CAPIMSG_SETNCCI_PART(m, ncci) capimsg_setu16(m, 10, ncci) | |
56 | #define CAPIMSG_SETFLAGS(m, flags) capimsg_setu16(m, 20, flags) | |
57 | ||
58 | /* parameters with differing location in DATA_B3_CONF/_RESP: */ | |
59 | #define CAPIMSG_SETHANDLE_CONF(m, handle) capimsg_setu16(m, 12, handle) | |
60 | #define CAPIMSG_SETINFO_CONF(m, info) capimsg_setu16(m, 14, info) | |
61 | ||
62 | /* Flags (DATA_B3_REQ/_IND) */ | |
63 | #define CAPI_FLAGS_DELIVERY_CONFIRMATION 0x04 | |
64 | #define CAPI_FLAGS_RESERVED (~0x1f) | |
65 | ||
66 | /* buffer sizes */ | |
67 | #define MAX_BC_OCTETS 11 | |
68 | #define MAX_HLC_OCTETS 3 | |
69 | #define MAX_NUMBER_DIGITS 20 | |
70 | #define MAX_FMT_IE_LEN 20 | |
71 | ||
72 | /* values for gigaset_capi_appl.connected */ | |
73 | #define APCONN_NONE 0 /* inactive/listening */ | |
74 | #define APCONN_SETUP 1 /* connecting */ | |
75 | #define APCONN_ACTIVE 2 /* B channel up */ | |
76 | ||
77 | /* registered application data structure */ | |
78 | struct gigaset_capi_appl { | |
79 | struct list_head ctrlist; | |
80 | struct gigaset_capi_appl *bcnext; | |
81 | u16 id; | |
82 | u16 nextMessageNumber; | |
83 | u32 listenInfoMask; | |
84 | u32 listenCIPmask; | |
85 | int connected; | |
86 | }; | |
87 | ||
88 | /* CAPI specific controller data structure */ | |
89 | struct gigaset_capi_ctr { | |
90 | struct capi_ctr ctr; | |
91 | struct list_head appls; | |
92 | struct sk_buff_head sendqueue; | |
93 | atomic_t sendqlen; | |
94 | /* two _cmsg structures possibly used concurrently: */ | |
95 | _cmsg hcmsg; /* for message composition triggered from hardware */ | |
96 | _cmsg acmsg; /* for dissection of messages sent from application */ | |
97 | u8 bc_buf[MAX_BC_OCTETS+1]; | |
98 | u8 hlc_buf[MAX_HLC_OCTETS+1]; | |
99 | u8 cgpty_buf[MAX_NUMBER_DIGITS+3]; | |
100 | u8 cdpty_buf[MAX_NUMBER_DIGITS+2]; | |
101 | }; | |
102 | ||
103 | /* CIP Value table (from CAPI 2.0 standard, ch. 6.1) */ | |
104 | static struct { | |
105 | u8 *bc; | |
106 | u8 *hlc; | |
107 | } cip2bchlc[] = { | |
108 | [1] = { "8090A3", NULL }, | |
109 | /* Speech (A-law) */ | |
110 | [2] = { "8890", NULL }, | |
111 | /* Unrestricted digital information */ | |
112 | [3] = { "8990", NULL }, | |
113 | /* Restricted digital information */ | |
114 | [4] = { "9090A3", NULL }, | |
115 | /* 3,1 kHz audio (A-law) */ | |
116 | [5] = { "9190", NULL }, | |
117 | /* 7 kHz audio */ | |
118 | [6] = { "9890", NULL }, | |
119 | /* Video */ | |
120 | [7] = { "88C0C6E6", NULL }, | |
121 | /* Packet mode */ | |
122 | [8] = { "8890218F", NULL }, | |
123 | /* 56 kbit/s rate adaptation */ | |
124 | [9] = { "9190A5", NULL }, | |
125 | /* Unrestricted digital information with tones/announcements */ | |
126 | [16] = { "8090A3", "9181" }, | |
127 | /* Telephony */ | |
128 | [17] = { "9090A3", "9184" }, | |
129 | /* Group 2/3 facsimile */ | |
130 | [18] = { "8890", "91A1" }, | |
131 | /* Group 4 facsimile Class 1 */ | |
132 | [19] = { "8890", "91A4" }, | |
133 | /* Teletex service basic and mixed mode | |
134 | and Group 4 facsimile service Classes II and III */ | |
135 | [20] = { "8890", "91A8" }, | |
136 | /* Teletex service basic and processable mode */ | |
137 | [21] = { "8890", "91B1" }, | |
138 | /* Teletex service basic mode */ | |
139 | [22] = { "8890", "91B2" }, | |
140 | /* International interworking for Videotex */ | |
141 | [23] = { "8890", "91B5" }, | |
142 | /* Telex */ | |
143 | [24] = { "8890", "91B8" }, | |
144 | /* Message Handling Systems in accordance with X.400 */ | |
145 | [25] = { "8890", "91C1" }, | |
146 | /* OSI application in accordance with X.200 */ | |
147 | [26] = { "9190A5", "9181" }, | |
148 | /* 7 kHz telephony */ | |
149 | [27] = { "9190A5", "916001" }, | |
150 | /* Video telephony, first connection */ | |
151 | [28] = { "8890", "916002" }, | |
152 | /* Video telephony, second connection */ | |
153 | }; | |
154 | ||
155 | /* | |
156 | * helper functions | |
157 | * ================ | |
158 | */ | |
159 | ||
160 | /* | |
161 | * emit unsupported parameter warning | |
162 | */ | |
163 | static inline void ignore_cstruct_param(struct cardstate *cs, _cstruct param, | |
164 | char *msgname, char *paramname) | |
165 | { | |
166 | if (param && *param) | |
167 | dev_warn(cs->dev, "%s: ignoring unsupported parameter: %s\n", | |
168 | msgname, paramname); | |
169 | } | |
170 | ||
7bb5fdc2 TS |
171 | /* |
172 | * check for legal hex digit | |
173 | */ | |
174 | static inline int ishexdigit(char c) | |
175 | { | |
176 | if (c >= '0' && c <= '9') | |
177 | return 1; | |
178 | if (c >= 'A' && c <= 'F') | |
179 | return 1; | |
180 | if (c >= 'a' && c <= 'f') | |
181 | return 1; | |
182 | return 0; | |
183 | } | |
184 | ||
185 | /* | |
186 | * convert hex to binary | |
187 | */ | |
188 | static inline u8 hex2bin(char c) | |
189 | { | |
190 | int result = c & 0x0f; | |
191 | if (c & 0x40) | |
192 | result += 9; | |
193 | return result; | |
194 | } | |
195 | ||
196 | /* | |
197 | * convert an IE from Gigaset hex string to ETSI binary representation | |
198 | * including length byte | |
199 | * return value: result length, -1 on error | |
200 | */ | |
201 | static int encode_ie(char *in, u8 *out, int maxlen) | |
202 | { | |
203 | int l = 0; | |
204 | while (*in) { | |
205 | if (!ishexdigit(in[0]) || !ishexdigit(in[1]) || l >= maxlen) | |
206 | return -1; | |
207 | out[++l] = (hex2bin(in[0]) << 4) + hex2bin(in[1]); | |
208 | in += 2; | |
209 | } | |
210 | out[0] = l; | |
211 | return l; | |
212 | } | |
213 | ||
214 | /* | |
215 | * convert an IE from ETSI binary representation including length byte | |
216 | * to Gigaset hex string | |
217 | */ | |
218 | static void decode_ie(u8 *in, char *out) | |
219 | { | |
220 | int i = *in; | |
221 | while (i-- > 0) { | |
222 | /* ToDo: conversion to upper case necessary? */ | |
223 | *out++ = toupper(hex_asc_hi(*++in)); | |
224 | *out++ = toupper(hex_asc_lo(*in)); | |
225 | } | |
226 | } | |
227 | ||
228 | /* | |
229 | * retrieve application data structure for an application ID | |
230 | */ | |
231 | static inline struct gigaset_capi_appl * | |
232 | get_appl(struct gigaset_capi_ctr *iif, u16 appl) | |
233 | { | |
234 | struct gigaset_capi_appl *ap; | |
235 | ||
236 | list_for_each_entry(ap, &iif->appls, ctrlist) | |
237 | if (ap->id == appl) | |
238 | return ap; | |
239 | return NULL; | |
240 | } | |
241 | ||
242 | /* | |
243 | * dump CAPI message to kernel messages for debugging | |
244 | */ | |
245 | static inline void dump_cmsg(enum debuglevel level, const char *tag, _cmsg *p) | |
246 | { | |
247 | #ifdef CONFIG_GIGASET_DEBUG | |
248 | _cdebbuf *cdb; | |
249 | ||
250 | if (!(gigaset_debuglevel & level)) | |
251 | return; | |
252 | ||
253 | cdb = capi_cmsg2str(p); | |
254 | if (cdb) { | |
255 | gig_dbg(level, "%s: [%d] %s", tag, p->ApplId, cdb->buf); | |
256 | cdebbuf_free(cdb); | |
257 | } else { | |
258 | gig_dbg(level, "%s: [%d] %s", tag, p->ApplId, | |
259 | capi_cmd2str(p->Command, p->Subcommand)); | |
260 | } | |
261 | #endif | |
262 | } | |
263 | ||
264 | static inline void dump_rawmsg(enum debuglevel level, const char *tag, | |
265 | unsigned char *data) | |
266 | { | |
267 | #ifdef CONFIG_GIGASET_DEBUG | |
268 | char *dbgline; | |
269 | int i, l; | |
270 | ||
271 | if (!(gigaset_debuglevel & level)) | |
272 | return; | |
273 | ||
274 | l = CAPIMSG_LEN(data); | |
275 | if (l < 12) { | |
276 | gig_dbg(level, "%s: ??? LEN=%04d", tag, l); | |
277 | return; | |
278 | } | |
279 | gig_dbg(level, "%s: 0x%02x:0x%02x: ID=%03d #0x%04x LEN=%04d NCCI=0x%x", | |
280 | tag, CAPIMSG_COMMAND(data), CAPIMSG_SUBCOMMAND(data), | |
281 | CAPIMSG_APPID(data), CAPIMSG_MSGID(data), l, | |
282 | CAPIMSG_CONTROL(data)); | |
283 | l -= 12; | |
284 | dbgline = kmalloc(3*l, GFP_ATOMIC); | |
285 | if (!dbgline) | |
286 | return; | |
287 | for (i = 0; i < l; i++) { | |
288 | dbgline[3*i] = hex_asc_hi(data[12+i]); | |
289 | dbgline[3*i+1] = hex_asc_lo(data[12+i]); | |
290 | dbgline[3*i+2] = ' '; | |
291 | } | |
292 | dbgline[3*l-1] = '\0'; | |
293 | gig_dbg(level, " %s", dbgline); | |
294 | kfree(dbgline); | |
295 | if (CAPIMSG_COMMAND(data) == CAPI_DATA_B3 && | |
296 | (CAPIMSG_SUBCOMMAND(data) == CAPI_REQ || | |
297 | CAPIMSG_SUBCOMMAND(data) == CAPI_IND) && | |
298 | CAPIMSG_DATALEN(data) > 0) { | |
299 | l = CAPIMSG_DATALEN(data); | |
300 | dbgline = kmalloc(3*l, GFP_ATOMIC); | |
301 | if (!dbgline) | |
302 | return; | |
303 | data += CAPIMSG_LEN(data); | |
304 | for (i = 0; i < l; i++) { | |
305 | dbgline[3*i] = hex_asc_hi(data[i]); | |
306 | dbgline[3*i+1] = hex_asc_lo(data[i]); | |
307 | dbgline[3*i+2] = ' '; | |
308 | } | |
309 | dbgline[3*l-1] = '\0'; | |
310 | gig_dbg(level, " %s", dbgline); | |
311 | kfree(dbgline); | |
312 | } | |
313 | #endif | |
314 | } | |
315 | ||
316 | /* | |
317 | * format CAPI IE as string | |
318 | */ | |
319 | ||
320 | static const char *format_ie(const char *ie) | |
321 | { | |
322 | static char result[3*MAX_FMT_IE_LEN]; | |
323 | int len, count; | |
324 | char *pout = result; | |
325 | ||
326 | if (!ie) | |
327 | return "NULL"; | |
328 | ||
329 | count = len = ie[0]; | |
330 | if (count > MAX_FMT_IE_LEN) | |
331 | count = MAX_FMT_IE_LEN-1; | |
332 | while (count--) { | |
333 | *pout++ = hex_asc_hi(*++ie); | |
334 | *pout++ = hex_asc_lo(*ie); | |
335 | *pout++ = ' '; | |
336 | } | |
337 | if (len > MAX_FMT_IE_LEN) { | |
338 | *pout++ = '.'; | |
339 | *pout++ = '.'; | |
340 | *pout++ = '.'; | |
341 | } | |
342 | *--pout = 0; | |
343 | return result; | |
344 | } | |
345 | ||
346 | ||
347 | /* | |
348 | * driver interface functions | |
349 | * ========================== | |
350 | */ | |
351 | ||
352 | /** | |
353 | * gigaset_skb_sent() - acknowledge transmission of outgoing skb | |
354 | * @bcs: B channel descriptor structure. | |
355 | * @skb: sent data. | |
356 | * | |
357 | * Called by hardware module {bas,ser,usb}_gigaset when the data in a | |
358 | * skb has been successfully sent, for signalling completion to the LL. | |
359 | */ | |
360 | void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *dskb) | |
361 | { | |
362 | struct cardstate *cs = bcs->cs; | |
363 | struct gigaset_capi_ctr *iif = cs->iif; | |
364 | struct gigaset_capi_appl *ap = bcs->ap; | |
365 | struct sk_buff *cskb; | |
366 | u16 flags; | |
367 | ||
368 | /* update statistics */ | |
369 | ++bcs->trans_up; | |
370 | ||
371 | if (!ap) { | |
372 | dev_err(cs->dev, "%s: no application\n", __func__); | |
373 | return; | |
374 | } | |
375 | ||
376 | /* don't send further B3 messages if disconnected */ | |
377 | if (ap->connected < APCONN_ACTIVE) { | |
378 | gig_dbg(DEBUG_LLDATA, "disconnected, discarding ack"); | |
379 | return; | |
380 | } | |
381 | ||
382 | /* ToDo: honor unset "delivery confirmation" bit */ | |
383 | flags = CAPIMSG_FLAGS(dskb->head); | |
384 | ||
385 | /* build DATA_B3_CONF message */ | |
386 | cskb = alloc_skb(CAPI_DATA_B3_CONF_LEN, GFP_ATOMIC); | |
387 | if (!cskb) { | |
388 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
389 | return; | |
390 | } | |
391 | /* frequent message, avoid _cmsg overhead */ | |
392 | CAPIMSG_SETLEN(cskb->data, CAPI_DATA_B3_CONF_LEN); | |
393 | CAPIMSG_SETAPPID(cskb->data, ap->id); | |
394 | CAPIMSG_SETCOMMAND(cskb->data, CAPI_DATA_B3); | |
395 | CAPIMSG_SETSUBCOMMAND(cskb->data, CAPI_CONF); | |
396 | CAPIMSG_SETMSGID(cskb->data, CAPIMSG_MSGID(dskb->head)); | |
397 | CAPIMSG_SETCONTROLLER(cskb->data, iif->ctr.cnr); | |
398 | CAPIMSG_SETPLCI_PART(cskb->data, bcs->channel + 1); | |
399 | CAPIMSG_SETNCCI_PART(cskb->data, 1); | |
400 | CAPIMSG_SETHANDLE_CONF(cskb->data, CAPIMSG_HANDLE_REQ(dskb->head)); | |
401 | if (flags & ~CAPI_FLAGS_DELIVERY_CONFIRMATION) | |
402 | CAPIMSG_SETINFO_CONF(cskb->data, | |
403 | CapiFlagsNotSupportedByProtocol); | |
404 | else | |
405 | CAPIMSG_SETINFO_CONF(cskb->data, CAPI_NOERROR); | |
406 | ||
407 | /* emit message */ | |
408 | dump_rawmsg(DEBUG_LLDATA, "DATA_B3_CONF", cskb->data); | |
409 | capi_ctr_handle_message(&iif->ctr, ap->id, cskb); | |
410 | } | |
411 | EXPORT_SYMBOL_GPL(gigaset_skb_sent); | |
412 | ||
413 | /** | |
414 | * gigaset_skb_rcvd() - pass received skb to LL | |
415 | * @bcs: B channel descriptor structure. | |
416 | * @skb: received data. | |
417 | * | |
418 | * Called by hardware module {bas,ser,usb}_gigaset when user data has | |
419 | * been successfully received, for passing to the LL. | |
420 | * Warning: skb must not be accessed anymore! | |
421 | */ | |
422 | void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb) | |
423 | { | |
424 | struct cardstate *cs = bcs->cs; | |
425 | struct gigaset_capi_ctr *iif = cs->iif; | |
426 | struct gigaset_capi_appl *ap = bcs->ap; | |
427 | int len = skb->len; | |
428 | ||
429 | /* update statistics */ | |
430 | bcs->trans_down++; | |
431 | ||
432 | if (!ap) { | |
433 | dev_err(cs->dev, "%s: no application\n", __func__); | |
434 | return; | |
435 | } | |
436 | ||
437 | /* don't send further B3 messages if disconnected */ | |
438 | if (ap->connected < APCONN_ACTIVE) { | |
439 | gig_dbg(DEBUG_LLDATA, "disconnected, discarding data"); | |
440 | dev_kfree_skb(skb); | |
441 | return; | |
442 | } | |
443 | ||
444 | /* | |
445 | * prepend DATA_B3_IND message to payload | |
446 | * Parameters: NCCI = 1, all others 0/unused | |
447 | * frequent message, avoid _cmsg overhead | |
448 | */ | |
449 | skb_push(skb, CAPI_DATA_B3_REQ_LEN); | |
450 | CAPIMSG_SETLEN(skb->data, CAPI_DATA_B3_REQ_LEN); | |
451 | CAPIMSG_SETAPPID(skb->data, ap->id); | |
452 | CAPIMSG_SETCOMMAND(skb->data, CAPI_DATA_B3); | |
453 | CAPIMSG_SETSUBCOMMAND(skb->data, CAPI_IND); | |
454 | CAPIMSG_SETMSGID(skb->data, ap->nextMessageNumber++); | |
455 | CAPIMSG_SETCONTROLLER(skb->data, iif->ctr.cnr); | |
456 | CAPIMSG_SETPLCI_PART(skb->data, bcs->channel + 1); | |
457 | CAPIMSG_SETNCCI_PART(skb->data, 1); | |
458 | /* Data parameter not used */ | |
459 | CAPIMSG_SETDATALEN(skb->data, len); | |
460 | /* Data handle parameter not used */ | |
461 | CAPIMSG_SETFLAGS(skb->data, 0); | |
462 | /* Data64 parameter not present */ | |
463 | ||
464 | /* emit message */ | |
465 | dump_rawmsg(DEBUG_LLDATA, "DATA_B3_IND", skb->data); | |
466 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
467 | } | |
468 | EXPORT_SYMBOL_GPL(gigaset_skb_rcvd); | |
469 | ||
470 | /** | |
471 | * gigaset_isdn_rcv_err() - signal receive error | |
472 | * @bcs: B channel descriptor structure. | |
473 | * | |
474 | * Called by hardware module {bas,ser,usb}_gigaset when a receive error | |
475 | * has occurred, for signalling to the LL. | |
476 | */ | |
477 | void gigaset_isdn_rcv_err(struct bc_state *bcs) | |
478 | { | |
479 | /* if currently ignoring packets, just count down */ | |
480 | if (bcs->ignore) { | |
481 | bcs->ignore--; | |
482 | return; | |
483 | } | |
484 | ||
485 | /* update statistics */ | |
486 | bcs->corrupted++; | |
487 | ||
488 | /* ToDo: signal error -> LL */ | |
489 | } | |
490 | EXPORT_SYMBOL_GPL(gigaset_isdn_rcv_err); | |
491 | ||
492 | /** | |
493 | * gigaset_isdn_icall() - signal incoming call | |
494 | * @at_state: connection state structure. | |
495 | * | |
496 | * Called by main module at tasklet level to notify the LL that an incoming | |
497 | * call has been received. @at_state contains the parameters of the call. | |
498 | * | |
499 | * Return value: call disposition (ICALL_*) | |
500 | */ | |
501 | int gigaset_isdn_icall(struct at_state_t *at_state) | |
502 | { | |
503 | struct cardstate *cs = at_state->cs; | |
504 | struct bc_state *bcs = at_state->bcs; | |
505 | struct gigaset_capi_ctr *iif = cs->iif; | |
506 | struct gigaset_capi_appl *ap; | |
507 | u32 actCIPmask; | |
508 | struct sk_buff *skb; | |
509 | unsigned int msgsize; | |
510 | int i; | |
511 | ||
512 | /* | |
513 | * ToDo: signal calls without a free B channel, too | |
514 | * (requires a u8 handle for the at_state structure that can | |
515 | * be stored in the PLCI and used in the CONNECT_RESP message | |
516 | * handler to retrieve it) | |
517 | */ | |
518 | if (!bcs) | |
519 | return ICALL_IGNORE; | |
520 | ||
521 | /* prepare CONNECT_IND message, using B channel number as PLCI */ | |
522 | capi_cmsg_header(&iif->hcmsg, 0, CAPI_CONNECT, CAPI_IND, 0, | |
523 | iif->ctr.cnr | ((bcs->channel + 1) << 8)); | |
524 | ||
525 | /* minimum size, all structs empty */ | |
526 | msgsize = CAPI_CONNECT_IND_BASELEN; | |
527 | ||
528 | /* Bearer Capability (mandatory) */ | |
529 | if (at_state->str_var[STR_ZBC]) { | |
530 | /* pass on BC from Gigaset */ | |
531 | if (encode_ie(at_state->str_var[STR_ZBC], iif->bc_buf, | |
532 | MAX_BC_OCTETS) < 0) { | |
533 | dev_warn(cs->dev, "RING ignored - bad BC %s\n", | |
534 | at_state->str_var[STR_ZBC]); | |
535 | return ICALL_IGNORE; | |
536 | } | |
537 | ||
538 | /* look up corresponding CIP value */ | |
539 | iif->hcmsg.CIPValue = 0; /* default if nothing found */ | |
540 | for (i = 0; i < ARRAY_SIZE(cip2bchlc); i++) | |
541 | if (cip2bchlc[i].bc != NULL && | |
542 | cip2bchlc[i].hlc == NULL && | |
543 | !strcmp(cip2bchlc[i].bc, | |
544 | at_state->str_var[STR_ZBC])) { | |
545 | iif->hcmsg.CIPValue = i; | |
546 | break; | |
547 | } | |
548 | } else { | |
549 | /* no BC (internal call): assume CIP 1 (speech, A-law) */ | |
550 | iif->hcmsg.CIPValue = 1; | |
551 | encode_ie(cip2bchlc[1].bc, iif->bc_buf, MAX_BC_OCTETS); | |
552 | } | |
553 | iif->hcmsg.BC = iif->bc_buf; | |
554 | msgsize += iif->hcmsg.BC[0]; | |
555 | ||
556 | /* High Layer Compatibility (optional) */ | |
557 | if (at_state->str_var[STR_ZHLC]) { | |
558 | /* pass on HLC from Gigaset */ | |
559 | if (encode_ie(at_state->str_var[STR_ZHLC], iif->hlc_buf, | |
560 | MAX_HLC_OCTETS) < 0) { | |
561 | dev_warn(cs->dev, "RING ignored - bad HLC %s\n", | |
562 | at_state->str_var[STR_ZHLC]); | |
563 | return ICALL_IGNORE; | |
564 | } | |
565 | iif->hcmsg.HLC = iif->hlc_buf; | |
566 | msgsize += iif->hcmsg.HLC[0]; | |
567 | ||
568 | /* look up corresponding CIP value */ | |
569 | /* keep BC based CIP value if none found */ | |
570 | if (at_state->str_var[STR_ZBC]) | |
571 | for (i = 0; i < ARRAY_SIZE(cip2bchlc); i++) | |
572 | if (cip2bchlc[i].hlc != NULL && | |
573 | !strcmp(cip2bchlc[i].hlc, | |
574 | at_state->str_var[STR_ZHLC]) && | |
575 | !strcmp(cip2bchlc[i].bc, | |
576 | at_state->str_var[STR_ZBC])) { | |
577 | iif->hcmsg.CIPValue = i; | |
578 | break; | |
579 | } | |
580 | } | |
581 | ||
582 | /* Called Party Number (optional) */ | |
583 | if (at_state->str_var[STR_ZCPN]) { | |
584 | i = strlen(at_state->str_var[STR_ZCPN]); | |
585 | if (i > MAX_NUMBER_DIGITS) { | |
586 | dev_warn(cs->dev, "RING ignored - bad number %s\n", | |
587 | at_state->str_var[STR_ZBC]); | |
588 | return ICALL_IGNORE; | |
589 | } | |
590 | iif->cdpty_buf[0] = i + 1; | |
591 | iif->cdpty_buf[1] = 0x80; /* type / numbering plan unknown */ | |
592 | memcpy(iif->cdpty_buf+2, at_state->str_var[STR_ZCPN], i); | |
593 | iif->hcmsg.CalledPartyNumber = iif->cdpty_buf; | |
594 | msgsize += iif->hcmsg.CalledPartyNumber[0]; | |
595 | } | |
596 | ||
597 | /* Calling Party Number (optional) */ | |
598 | if (at_state->str_var[STR_NMBR]) { | |
599 | i = strlen(at_state->str_var[STR_NMBR]); | |
600 | if (i > MAX_NUMBER_DIGITS) { | |
601 | dev_warn(cs->dev, "RING ignored - bad number %s\n", | |
602 | at_state->str_var[STR_ZBC]); | |
603 | return ICALL_IGNORE; | |
604 | } | |
605 | iif->cgpty_buf[0] = i + 2; | |
606 | iif->cgpty_buf[1] = 0x00; /* type / numbering plan unknown */ | |
607 | iif->cgpty_buf[2] = 0x80; /* pres. allowed, not screened */ | |
608 | memcpy(iif->cgpty_buf+3, at_state->str_var[STR_NMBR], i); | |
609 | iif->hcmsg.CallingPartyNumber = iif->cgpty_buf; | |
610 | msgsize += iif->hcmsg.CallingPartyNumber[0]; | |
611 | } | |
612 | ||
613 | /* remaining parameters (not supported, always left NULL): | |
614 | * - CalledPartySubaddress | |
615 | * - CallingPartySubaddress | |
616 | * - AdditionalInfo | |
617 | * - BChannelinformation | |
618 | * - Keypadfacility | |
619 | * - Useruserdata | |
620 | * - Facilitydataarray | |
621 | */ | |
622 | ||
623 | gig_dbg(DEBUG_CMD, "icall: PLCI %x CIP %d BC %s", | |
624 | iif->hcmsg.adr.adrPLCI, iif->hcmsg.CIPValue, | |
625 | format_ie(iif->hcmsg.BC)); | |
626 | gig_dbg(DEBUG_CMD, "icall: HLC %s", | |
627 | format_ie(iif->hcmsg.HLC)); | |
628 | gig_dbg(DEBUG_CMD, "icall: CgPty %s", | |
629 | format_ie(iif->hcmsg.CallingPartyNumber)); | |
630 | gig_dbg(DEBUG_CMD, "icall: CdPty %s", | |
631 | format_ie(iif->hcmsg.CalledPartyNumber)); | |
632 | ||
633 | /* scan application list for matching listeners */ | |
634 | bcs->ap = NULL; | |
635 | actCIPmask = 1 | (1 << iif->hcmsg.CIPValue); | |
636 | list_for_each_entry(ap, &iif->appls, ctrlist) | |
637 | if (actCIPmask & ap->listenCIPmask) { | |
638 | /* build CONNECT_IND message for this application */ | |
639 | iif->hcmsg.ApplId = ap->id; | |
640 | iif->hcmsg.Messagenumber = ap->nextMessageNumber++; | |
641 | ||
642 | skb = alloc_skb(msgsize, GFP_ATOMIC); | |
643 | if (!skb) { | |
644 | dev_err(cs->dev, "%s: out of memory\n", | |
645 | __func__); | |
646 | break; | |
647 | } | |
648 | capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize)); | |
649 | dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg); | |
650 | ||
651 | /* add to listeners on this B channel, update state */ | |
652 | ap->bcnext = bcs->ap; | |
653 | bcs->ap = ap; | |
654 | bcs->chstate |= CHS_NOTIFY_LL; | |
655 | ap->connected = APCONN_SETUP; | |
656 | ||
657 | /* emit message */ | |
658 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
659 | } | |
660 | ||
661 | /* | |
662 | * Return "accept" if any listeners. | |
663 | * Gigaset will send ALERTING. | |
664 | * There doesn't seem to be a way to avoid this. | |
665 | */ | |
666 | return bcs->ap ? ICALL_ACCEPT : ICALL_IGNORE; | |
667 | } | |
668 | ||
669 | /* | |
670 | * send a DISCONNECT_IND message to an application | |
671 | * does not sleep, clobbers the controller's hcmsg structure | |
672 | */ | |
673 | static void send_disconnect_ind(struct bc_state *bcs, | |
674 | struct gigaset_capi_appl *ap, u16 reason) | |
675 | { | |
676 | struct cardstate *cs = bcs->cs; | |
677 | struct gigaset_capi_ctr *iif = cs->iif; | |
678 | struct sk_buff *skb; | |
679 | ||
680 | if (ap->connected == APCONN_NONE) | |
681 | return; | |
682 | ||
683 | capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT, CAPI_IND, | |
684 | ap->nextMessageNumber++, | |
685 | iif->ctr.cnr | ((bcs->channel + 1) << 8)); | |
686 | iif->hcmsg.Reason = reason; | |
687 | skb = alloc_skb(CAPI_DISCONNECT_IND_LEN, GFP_ATOMIC); | |
688 | if (!skb) { | |
689 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
690 | return; | |
691 | } | |
692 | capi_cmsg2message(&iif->hcmsg, __skb_put(skb, CAPI_DISCONNECT_IND_LEN)); | |
693 | dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg); | |
694 | ap->connected = APCONN_NONE; | |
695 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
696 | } | |
697 | ||
698 | /* | |
699 | * send a DISCONNECT_B3_IND message to an application | |
700 | * Parameters: NCCI = 1, NCPI empty, Reason_B3 = 0 | |
701 | * does not sleep, clobbers the controller's hcmsg structure | |
702 | */ | |
703 | static void send_disconnect_b3_ind(struct bc_state *bcs, | |
704 | struct gigaset_capi_appl *ap) | |
705 | { | |
706 | struct cardstate *cs = bcs->cs; | |
707 | struct gigaset_capi_ctr *iif = cs->iif; | |
708 | struct sk_buff *skb; | |
709 | ||
710 | /* nothing to do if no logical connection active */ | |
711 | if (ap->connected < APCONN_ACTIVE) | |
712 | return; | |
713 | ap->connected = APCONN_SETUP; | |
714 | ||
715 | capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND, | |
716 | ap->nextMessageNumber++, | |
717 | iif->ctr.cnr | ((bcs->channel + 1) << 8) | (1 << 16)); | |
718 | skb = alloc_skb(CAPI_DISCONNECT_B3_IND_BASELEN, GFP_ATOMIC); | |
719 | if (!skb) { | |
720 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
721 | return; | |
722 | } | |
723 | capi_cmsg2message(&iif->hcmsg, | |
724 | __skb_put(skb, CAPI_DISCONNECT_B3_IND_BASELEN)); | |
725 | dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg); | |
726 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
727 | } | |
728 | ||
729 | /** | |
730 | * gigaset_isdn_connD() - signal D channel connect | |
731 | * @bcs: B channel descriptor structure. | |
732 | * | |
733 | * Called by main module at tasklet level to notify the LL that the D channel | |
734 | * connection has been established. | |
735 | */ | |
736 | void gigaset_isdn_connD(struct bc_state *bcs) | |
737 | { | |
738 | struct cardstate *cs = bcs->cs; | |
739 | struct gigaset_capi_ctr *iif = cs->iif; | |
740 | struct gigaset_capi_appl *ap = bcs->ap; | |
741 | struct sk_buff *skb; | |
742 | unsigned int msgsize; | |
743 | ||
744 | if (!ap) { | |
745 | dev_err(cs->dev, "%s: no application\n", __func__); | |
746 | return; | |
747 | } | |
748 | while (ap->bcnext) { | |
749 | /* this should never happen */ | |
750 | dev_warn(cs->dev, "%s: dropping extra application %u\n", | |
751 | __func__, ap->bcnext->id); | |
752 | send_disconnect_ind(bcs, ap->bcnext, | |
753 | CapiCallGivenToOtherApplication); | |
754 | ap->bcnext = ap->bcnext->bcnext; | |
755 | } | |
756 | if (ap->connected == APCONN_NONE) { | |
757 | dev_warn(cs->dev, "%s: application %u not connected\n", | |
758 | __func__, ap->id); | |
759 | return; | |
760 | } | |
761 | ||
762 | /* prepare CONNECT_ACTIVE_IND message | |
763 | * Note: LLC not supported by device | |
764 | */ | |
765 | capi_cmsg_header(&iif->hcmsg, ap->id, CAPI_CONNECT_ACTIVE, CAPI_IND, | |
766 | ap->nextMessageNumber++, | |
767 | iif->ctr.cnr | ((bcs->channel + 1) << 8)); | |
768 | ||
769 | /* minimum size, all structs empty */ | |
770 | msgsize = CAPI_CONNECT_ACTIVE_IND_BASELEN; | |
771 | ||
772 | /* ToDo: set parameter: Connected number | |
773 | * (requires ev-layer state machine extension to collect | |
774 | * ZCON device reply) | |
775 | */ | |
776 | ||
777 | /* build and emit CONNECT_ACTIVE_IND message */ | |
778 | skb = alloc_skb(msgsize, GFP_ATOMIC); | |
779 | if (!skb) { | |
780 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
781 | return; | |
782 | } | |
783 | capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize)); | |
784 | dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg); | |
785 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
786 | } | |
787 | ||
788 | /** | |
789 | * gigaset_isdn_hupD() - signal D channel hangup | |
790 | * @bcs: B channel descriptor structure. | |
791 | * | |
792 | * Called by main module at tasklet level to notify the LL that the D channel | |
793 | * connection has been shut down. | |
794 | */ | |
795 | void gigaset_isdn_hupD(struct bc_state *bcs) | |
796 | { | |
797 | struct gigaset_capi_appl *ap; | |
798 | ||
799 | /* | |
800 | * ToDo: pass on reason code reported by device | |
801 | * (requires ev-layer state machine extension to collect | |
802 | * ZCAU device reply) | |
803 | */ | |
804 | for (ap = bcs->ap; ap != NULL; ap = ap->bcnext) { | |
805 | send_disconnect_b3_ind(bcs, ap); | |
806 | send_disconnect_ind(bcs, ap, 0); | |
807 | } | |
808 | bcs->ap = NULL; | |
809 | } | |
810 | ||
811 | /** | |
812 | * gigaset_isdn_connB() - signal B channel connect | |
813 | * @bcs: B channel descriptor structure. | |
814 | * | |
815 | * Called by main module at tasklet level to notify the LL that the B channel | |
816 | * connection has been established. | |
817 | */ | |
818 | void gigaset_isdn_connB(struct bc_state *bcs) | |
819 | { | |
820 | struct cardstate *cs = bcs->cs; | |
821 | struct gigaset_capi_ctr *iif = cs->iif; | |
822 | struct gigaset_capi_appl *ap = bcs->ap; | |
823 | struct sk_buff *skb; | |
824 | unsigned int msgsize; | |
825 | u8 command; | |
826 | ||
827 | if (!ap) { | |
828 | dev_err(cs->dev, "%s: no application\n", __func__); | |
829 | return; | |
830 | } | |
831 | while (ap->bcnext) { | |
832 | /* this should never happen */ | |
833 | dev_warn(cs->dev, "%s: dropping extra application %u\n", | |
834 | __func__, ap->bcnext->id); | |
835 | send_disconnect_ind(bcs, ap->bcnext, | |
836 | CapiCallGivenToOtherApplication); | |
837 | ap->bcnext = ap->bcnext->bcnext; | |
838 | } | |
839 | if (!ap->connected) { | |
840 | dev_warn(cs->dev, "%s: application %u not connected\n", | |
841 | __func__, ap->id); | |
842 | return; | |
843 | } | |
844 | ||
845 | /* | |
846 | * emit CONNECT_B3_ACTIVE_IND if we already got CONNECT_B3_REQ; | |
847 | * otherwise we have to emit CONNECT_B3_IND first, and follow up with | |
848 | * CONNECT_B3_ACTIVE_IND in reply to CONNECT_B3_RESP | |
849 | * Parameters in both cases always: NCCI = 1, NCPI empty | |
850 | */ | |
851 | if (ap->connected >= APCONN_ACTIVE) { | |
852 | command = CAPI_CONNECT_B3_ACTIVE; | |
853 | msgsize = CAPI_CONNECT_B3_ACTIVE_IND_BASELEN; | |
854 | } else { | |
855 | command = CAPI_CONNECT_B3; | |
856 | msgsize = CAPI_CONNECT_B3_IND_BASELEN; | |
857 | } | |
858 | capi_cmsg_header(&iif->hcmsg, ap->id, command, CAPI_IND, | |
859 | ap->nextMessageNumber++, | |
860 | iif->ctr.cnr | ((bcs->channel + 1) << 8) | (1 << 16)); | |
861 | skb = alloc_skb(msgsize, GFP_ATOMIC); | |
862 | if (!skb) { | |
863 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
864 | return; | |
865 | } | |
866 | capi_cmsg2message(&iif->hcmsg, __skb_put(skb, msgsize)); | |
867 | dump_cmsg(DEBUG_CMD, __func__, &iif->hcmsg); | |
868 | ap->connected = APCONN_ACTIVE; | |
869 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
870 | } | |
871 | ||
872 | /** | |
873 | * gigaset_isdn_hupB() - signal B channel hangup | |
874 | * @bcs: B channel descriptor structure. | |
875 | * | |
876 | * Called by main module to notify the LL that the B channel connection has | |
877 | * been shut down. | |
878 | */ | |
879 | void gigaset_isdn_hupB(struct bc_state *bcs) | |
880 | { | |
881 | struct cardstate *cs = bcs->cs; | |
882 | struct gigaset_capi_appl *ap = bcs->ap; | |
883 | ||
884 | /* ToDo: assure order of DISCONNECT_B3_IND and DISCONNECT_IND ? */ | |
885 | ||
886 | if (!ap) { | |
887 | dev_err(cs->dev, "%s: no application\n", __func__); | |
888 | return; | |
889 | } | |
890 | ||
891 | send_disconnect_b3_ind(bcs, ap); | |
892 | } | |
893 | ||
894 | /** | |
895 | * gigaset_isdn_start() - signal device availability | |
896 | * @cs: device descriptor structure. | |
897 | * | |
898 | * Called by main module to notify the LL that the device is available for | |
899 | * use. | |
900 | */ | |
901 | void gigaset_isdn_start(struct cardstate *cs) | |
902 | { | |
903 | struct gigaset_capi_ctr *iif = cs->iif; | |
904 | ||
905 | /* fill profile data: manufacturer name */ | |
906 | strcpy(iif->ctr.manu, "Siemens"); | |
907 | /* CAPI and device version */ | |
908 | iif->ctr.version.majorversion = 2; /* CAPI 2.0 */ | |
909 | iif->ctr.version.minorversion = 0; | |
910 | /* ToDo: check/assert cs->gotfwver? */ | |
911 | iif->ctr.version.majormanuversion = cs->fwver[0]; | |
912 | iif->ctr.version.minormanuversion = cs->fwver[1]; | |
913 | /* number of B channels supported */ | |
914 | iif->ctr.profile.nbchannel = cs->channels; | |
915 | /* global options: internal controller, supplementary services */ | |
916 | iif->ctr.profile.goptions = 0x11; | |
917 | /* B1 protocols: 64 kbit/s HDLC or transparent */ | |
918 | iif->ctr.profile.support1 = 0x03; | |
919 | /* B2 protocols: transparent only */ | |
920 | /* ToDo: X.75 SLP ? */ | |
921 | iif->ctr.profile.support2 = 0x02; | |
922 | /* B3 protocols: transparent only */ | |
923 | iif->ctr.profile.support3 = 0x01; | |
924 | /* no serial number */ | |
925 | strcpy(iif->ctr.serial, "0"); | |
926 | capi_ctr_ready(&iif->ctr); | |
927 | } | |
928 | ||
929 | /** | |
930 | * gigaset_isdn_stop() - signal device unavailability | |
931 | * @cs: device descriptor structure. | |
932 | * | |
933 | * Called by main module to notify the LL that the device is no longer | |
934 | * available for use. | |
935 | */ | |
936 | void gigaset_isdn_stop(struct cardstate *cs) | |
937 | { | |
938 | struct gigaset_capi_ctr *iif = cs->iif; | |
939 | capi_ctr_down(&iif->ctr); | |
940 | } | |
941 | ||
942 | /* | |
943 | * kernel CAPI callback methods | |
944 | * ============================ | |
945 | */ | |
946 | ||
947 | /* | |
948 | * load firmware | |
949 | */ | |
950 | static int gigaset_load_firmware(struct capi_ctr *ctr, capiloaddata *data) | |
951 | { | |
952 | struct cardstate *cs = ctr->driverdata; | |
953 | ||
954 | /* AVM specific operation, not needed for Gigaset -- ignore */ | |
955 | dev_notice(cs->dev, "load_firmware ignored\n"); | |
956 | ||
957 | return 0; | |
958 | } | |
959 | ||
960 | /* | |
961 | * reset (deactivate) controller | |
962 | */ | |
963 | static void gigaset_reset_ctr(struct capi_ctr *ctr) | |
964 | { | |
965 | struct cardstate *cs = ctr->driverdata; | |
966 | ||
967 | /* AVM specific operation, not needed for Gigaset -- ignore */ | |
968 | dev_notice(cs->dev, "reset_ctr ignored\n"); | |
969 | } | |
970 | ||
971 | /* | |
972 | * register CAPI application | |
973 | */ | |
974 | static void gigaset_register_appl(struct capi_ctr *ctr, u16 appl, | |
975 | capi_register_params *rp) | |
976 | { | |
977 | struct gigaset_capi_ctr *iif | |
978 | = container_of(ctr, struct gigaset_capi_ctr, ctr); | |
979 | struct cardstate *cs = ctr->driverdata; | |
980 | struct gigaset_capi_appl *ap; | |
981 | ||
982 | list_for_each_entry(ap, &iif->appls, ctrlist) | |
983 | if (ap->id == appl) { | |
984 | dev_notice(cs->dev, | |
985 | "application %u already registered\n", appl); | |
986 | return; | |
987 | } | |
988 | ||
989 | ap = kzalloc(sizeof(*ap), GFP_KERNEL); | |
990 | if (!ap) { | |
991 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
992 | return; | |
993 | } | |
994 | ap->id = appl; | |
995 | ||
996 | list_add(&ap->ctrlist, &iif->appls); | |
997 | } | |
998 | ||
999 | /* | |
1000 | * release CAPI application | |
1001 | */ | |
1002 | static void gigaset_release_appl(struct capi_ctr *ctr, u16 appl) | |
1003 | { | |
1004 | struct gigaset_capi_ctr *iif | |
1005 | = container_of(ctr, struct gigaset_capi_ctr, ctr); | |
1006 | struct cardstate *cs = iif->ctr.driverdata; | |
1007 | struct gigaset_capi_appl *ap, *tmp; | |
1008 | ||
1009 | list_for_each_entry_safe(ap, tmp, &iif->appls, ctrlist) | |
1010 | if (ap->id == appl) { | |
1011 | if (ap->connected != APCONN_NONE) { | |
1012 | dev_err(cs->dev, | |
1013 | "%s: application %u still connected\n", | |
1014 | __func__, ap->id); | |
1015 | /* ToDo: clear active connection */ | |
1016 | } | |
1017 | list_del(&ap->ctrlist); | |
1018 | kfree(ap); | |
1019 | } | |
1020 | ||
1021 | } | |
1022 | ||
1023 | /* | |
1024 | * ===================================================================== | |
1025 | * outgoing CAPI message handler | |
1026 | * ===================================================================== | |
1027 | */ | |
1028 | ||
1029 | /* | |
1030 | * helper function: emit reply message with given Info value | |
1031 | */ | |
1032 | static void send_conf(struct gigaset_capi_ctr *iif, | |
1033 | struct gigaset_capi_appl *ap, | |
1034 | struct sk_buff *skb, | |
1035 | u16 info) | |
1036 | { | |
1037 | /* | |
1038 | * _CONF replies always only have NCCI and Info parameters | |
1039 | * so they'll fit into the _REQ message skb | |
1040 | */ | |
1041 | capi_cmsg_answer(&iif->acmsg); | |
1042 | iif->acmsg.Info = info; | |
1043 | capi_cmsg2message(&iif->acmsg, skb->data); | |
1044 | __skb_trim(skb, CAPI_STDCONF_LEN); | |
1045 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1046 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); | |
1047 | } | |
1048 | ||
1049 | /* | |
1050 | * process FACILITY_REQ message | |
1051 | */ | |
1052 | static void do_facility_req(struct gigaset_capi_ctr *iif, | |
1053 | struct gigaset_capi_appl *ap, | |
1054 | struct sk_buff *skb) | |
1055 | { | |
1056 | struct cardstate *cs = iif->ctr.driverdata; | |
6c911916 | 1057 | _cmsg *cmsg = &iif->acmsg; |
7bb5fdc2 TS |
1058 | struct sk_buff *cskb; |
1059 | u8 *pparam; | |
1060 | unsigned int msgsize = CAPI_FACILITY_CONF_BASELEN; | |
1061 | u16 function, info; | |
1062 | static u8 confparam[10]; /* max. 9 octets + length byte */ | |
1063 | ||
1064 | /* decode message */ | |
6c911916 TS |
1065 | capi_message2cmsg(cmsg, skb->data); |
1066 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1067 | |
1068 | /* | |
1069 | * Facility Request Parameter is not decoded by capi_message2cmsg() | |
1070 | * encoding depends on Facility Selector | |
1071 | */ | |
6c911916 | 1072 | switch (cmsg->FacilitySelector) { |
7bb5fdc2 TS |
1073 | case CAPI_FACILITY_DTMF: /* ToDo */ |
1074 | info = CapiFacilityNotSupported; | |
1075 | confparam[0] = 2; /* length */ | |
1076 | /* DTMF information: Unknown DTMF request */ | |
1077 | capimsg_setu16(confparam, 1, 2); | |
1078 | break; | |
1079 | ||
1080 | case CAPI_FACILITY_V42BIS: /* not supported */ | |
1081 | info = CapiFacilityNotSupported; | |
1082 | confparam[0] = 2; /* length */ | |
1083 | /* V.42 bis information: not available */ | |
1084 | capimsg_setu16(confparam, 1, 1); | |
1085 | break; | |
1086 | ||
1087 | case CAPI_FACILITY_SUPPSVC: | |
1088 | /* decode Function parameter */ | |
6c911916 | 1089 | pparam = cmsg->FacilityRequestParameter; |
7bb5fdc2 TS |
1090 | if (pparam == NULL || *pparam < 2) { |
1091 | dev_notice(cs->dev, "%s: %s missing\n", "FACILITY_REQ", | |
1092 | "Facility Request Parameter"); | |
1093 | send_conf(iif, ap, skb, CapiIllMessageParmCoding); | |
1094 | return; | |
1095 | } | |
1096 | function = CAPIMSG_U16(pparam, 1); | |
1097 | switch (function) { | |
1098 | case CAPI_SUPPSVC_GETSUPPORTED: | |
1099 | info = CapiSuccess; | |
1100 | /* Supplementary Service specific parameter */ | |
1101 | confparam[3] = 6; /* length */ | |
1102 | /* Supplementary services info: Success */ | |
1103 | capimsg_setu16(confparam, 4, CapiSuccess); | |
1104 | /* Supported Services: none */ | |
1105 | capimsg_setu32(confparam, 6, 0); | |
1106 | break; | |
1107 | /* ToDo: add supported services */ | |
1108 | default: | |
1109 | info = CapiFacilitySpecificFunctionNotSupported; | |
1110 | /* Supplementary Service specific parameter */ | |
1111 | confparam[3] = 2; /* length */ | |
1112 | /* Supplementary services info: not supported */ | |
1113 | capimsg_setu16(confparam, 4, | |
1114 | CapiSupplementaryServiceNotSupported); | |
1115 | } | |
1116 | ||
1117 | /* Facility confirmation parameter */ | |
1118 | confparam[0] = confparam[3] + 3; /* total length */ | |
1119 | /* Function: copy from _REQ message */ | |
1120 | capimsg_setu16(confparam, 1, function); | |
1121 | /* Supplementary Service specific parameter already set above */ | |
1122 | break; | |
1123 | ||
1124 | case CAPI_FACILITY_WAKEUP: /* ToDo */ | |
1125 | info = CapiFacilityNotSupported; | |
1126 | confparam[0] = 2; /* length */ | |
1127 | /* Number of accepted awake request parameters: 0 */ | |
1128 | capimsg_setu16(confparam, 1, 0); | |
1129 | break; | |
1130 | ||
1131 | default: | |
1132 | info = CapiFacilityNotSupported; | |
1133 | confparam[0] = 0; /* empty struct */ | |
1134 | } | |
1135 | ||
1136 | /* send FACILITY_CONF with given Info and confirmation parameter */ | |
6c911916 TS |
1137 | capi_cmsg_answer(cmsg); |
1138 | cmsg->Info = info; | |
1139 | cmsg->FacilityConfirmationParameter = confparam; | |
7bb5fdc2 TS |
1140 | msgsize += confparam[0]; /* length */ |
1141 | cskb = alloc_skb(msgsize, GFP_ATOMIC); | |
1142 | if (!cskb) { | |
1143 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1144 | return; | |
1145 | } | |
6c911916 TS |
1146 | capi_cmsg2message(cmsg, __skb_put(cskb, msgsize)); |
1147 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
1148 | capi_ctr_handle_message(&iif->ctr, ap->id, cskb); | |
7bb5fdc2 TS |
1149 | } |
1150 | ||
1151 | ||
1152 | /* | |
1153 | * process LISTEN_REQ message | |
1154 | * just store the masks in the application data structure | |
1155 | */ | |
1156 | static void do_listen_req(struct gigaset_capi_ctr *iif, | |
1157 | struct gigaset_capi_appl *ap, | |
1158 | struct sk_buff *skb) | |
1159 | { | |
1160 | /* decode message */ | |
1161 | capi_message2cmsg(&iif->acmsg, skb->data); | |
1162 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1163 | ||
1164 | /* store listening parameters */ | |
1165 | ap->listenInfoMask = iif->acmsg.InfoMask; | |
1166 | ap->listenCIPmask = iif->acmsg.CIPmask; | |
1167 | send_conf(iif, ap, skb, CapiSuccess); | |
1168 | } | |
1169 | ||
1170 | /* | |
1171 | * process ALERT_REQ message | |
1172 | * nothing to do, Gigaset always alerts anyway | |
1173 | */ | |
1174 | static void do_alert_req(struct gigaset_capi_ctr *iif, | |
1175 | struct gigaset_capi_appl *ap, | |
1176 | struct sk_buff *skb) | |
1177 | { | |
1178 | /* decode message */ | |
1179 | capi_message2cmsg(&iif->acmsg, skb->data); | |
1180 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1181 | send_conf(iif, ap, skb, CapiAlertAlreadySent); | |
1182 | } | |
1183 | ||
1184 | /* | |
1185 | * process CONNECT_REQ message | |
1186 | * allocate a B channel, prepare dial commands, queue a DIAL event, | |
1187 | * emit CONNECT_CONF reply | |
1188 | */ | |
1189 | static void do_connect_req(struct gigaset_capi_ctr *iif, | |
1190 | struct gigaset_capi_appl *ap, | |
1191 | struct sk_buff *skb) | |
1192 | { | |
1193 | struct cardstate *cs = iif->ctr.driverdata; | |
1194 | _cmsg *cmsg = &iif->acmsg; | |
1195 | struct bc_state *bcs; | |
1196 | char **commands; | |
1197 | char *s; | |
1198 | u8 *pp; | |
1199 | int i, l; | |
1200 | u16 info; | |
1201 | ||
1202 | /* decode message */ | |
6c911916 TS |
1203 | capi_message2cmsg(cmsg, skb->data); |
1204 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1205 | |
1206 | /* get free B channel & construct PLCI */ | |
1207 | bcs = gigaset_get_free_channel(cs); | |
1208 | if (!bcs) { | |
1209 | dev_notice(cs->dev, "%s: no B channel available\n", | |
1210 | "CONNECT_REQ"); | |
1211 | send_conf(iif, ap, skb, CapiNoPlciAvailable); | |
1212 | return; | |
1213 | } | |
1214 | ap->bcnext = NULL; | |
1215 | bcs->ap = ap; | |
1216 | cmsg->adr.adrPLCI |= (bcs->channel + 1) << 8; | |
1217 | ||
1218 | /* build command table */ | |
1219 | commands = kzalloc(AT_NUM*(sizeof *commands), GFP_KERNEL); | |
1220 | if (!commands) | |
1221 | goto oom; | |
1222 | ||
1223 | /* encode parameter: Called party number */ | |
1224 | pp = cmsg->CalledPartyNumber; | |
1225 | if (pp == NULL || *pp == 0) { | |
1226 | dev_notice(cs->dev, "%s: %s missing\n", | |
1227 | "CONNECT_REQ", "Called party number"); | |
1228 | info = CapiIllMessageParmCoding; | |
1229 | goto error; | |
1230 | } | |
1231 | l = *pp++; | |
1232 | /* check type of number/numbering plan byte */ | |
1233 | switch (*pp) { | |
1234 | case 0x80: /* unknown type / unknown numbering plan */ | |
1235 | case 0x81: /* unknown type / ISDN/Telephony numbering plan */ | |
1236 | break; | |
1237 | default: /* others: warn about potential misinterpretation */ | |
1238 | dev_notice(cs->dev, "%s: %s type/plan 0x%02x unsupported\n", | |
1239 | "CONNECT_REQ", "Called party number", *pp); | |
1240 | } | |
1241 | pp++; | |
1242 | l--; | |
1243 | /* translate "**" internal call prefix to CTP value */ | |
1244 | if (l >= 2 && pp[0] == '*' && pp[1] == '*') { | |
1245 | s = "^SCTP=0\r"; | |
1246 | pp += 2; | |
1247 | l -= 2; | |
1248 | } else { | |
1249 | s = "^SCTP=1\r"; | |
1250 | } | |
1251 | commands[AT_TYPE] = kstrdup(s, GFP_KERNEL); | |
1252 | if (!commands[AT_TYPE]) | |
1253 | goto oom; | |
1254 | commands[AT_DIAL] = kmalloc(l+3, GFP_KERNEL); | |
1255 | if (!commands[AT_DIAL]) | |
1256 | goto oom; | |
22077ebc | 1257 | snprintf(commands[AT_DIAL], l+3, "D%.*s\r", l, pp); |
7bb5fdc2 TS |
1258 | |
1259 | /* encode parameter: Calling party number */ | |
1260 | pp = cmsg->CallingPartyNumber; | |
1261 | if (pp != NULL && *pp > 0) { | |
1262 | l = *pp++; | |
1263 | ||
1264 | /* check type of number/numbering plan byte */ | |
1265 | /* ToDo: allow for/handle Ext=1? */ | |
1266 | switch (*pp) { | |
1267 | case 0x00: /* unknown type / unknown numbering plan */ | |
1268 | case 0x01: /* unknown type / ISDN/Telephony num. plan */ | |
1269 | break; | |
1270 | default: | |
1271 | dev_notice(cs->dev, | |
1272 | "%s: %s type/plan 0x%02x unsupported\n", | |
1273 | "CONNECT_REQ", "Calling party number", *pp); | |
1274 | } | |
1275 | pp++; | |
1276 | l--; | |
1277 | ||
1278 | /* check presentation indicator */ | |
1279 | if (!l) { | |
1280 | dev_notice(cs->dev, "%s: %s IE truncated\n", | |
1281 | "CONNECT_REQ", "Calling party number"); | |
1282 | info = CapiIllMessageParmCoding; | |
1283 | goto error; | |
1284 | } | |
1285 | switch (*pp & 0xfc) { /* ignore Screening indicator */ | |
1286 | case 0x80: /* Presentation allowed */ | |
1287 | s = "^SCLIP=1\r"; | |
1288 | break; | |
1289 | case 0xa0: /* Presentation restricted */ | |
1290 | s = "^SCLIP=0\r"; | |
1291 | break; | |
1292 | default: | |
1293 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", | |
1294 | "CONNECT_REQ", | |
1295 | "Presentation/Screening indicator", | |
1296 | *pp); | |
1297 | s = "^SCLIP=1\r"; | |
1298 | } | |
1299 | commands[AT_CLIP] = kstrdup(s, GFP_KERNEL); | |
1300 | if (!commands[AT_CLIP]) | |
1301 | goto oom; | |
1302 | pp++; | |
1303 | l--; | |
1304 | ||
1305 | if (l) { | |
1306 | /* number */ | |
1307 | commands[AT_MSN] = kmalloc(l+8, GFP_KERNEL); | |
1308 | if (!commands[AT_MSN]) | |
1309 | goto oom; | |
1310 | snprintf(commands[AT_MSN], l+8, "^SMSN=%*s\r", l, pp); | |
1311 | } | |
1312 | } | |
1313 | ||
1314 | /* check parameter: CIP Value */ | |
1315 | if (cmsg->CIPValue > ARRAY_SIZE(cip2bchlc) || | |
1316 | (cmsg->CIPValue > 0 && cip2bchlc[cmsg->CIPValue].bc == NULL)) { | |
1317 | dev_notice(cs->dev, "%s: unknown CIP value %d\n", | |
1318 | "CONNECT_REQ", cmsg->CIPValue); | |
1319 | info = CapiCipValueUnknown; | |
1320 | goto error; | |
1321 | } | |
1322 | ||
1323 | /* check/encode parameter: BC */ | |
1324 | if (cmsg->BC && cmsg->BC[0]) { | |
1325 | /* explicit BC overrides CIP */ | |
1326 | l = 2*cmsg->BC[0] + 7; | |
1327 | commands[AT_BC] = kmalloc(l, GFP_KERNEL); | |
1328 | if (!commands[AT_BC]) | |
1329 | goto oom; | |
1330 | strcpy(commands[AT_BC], "^SBC="); | |
1331 | decode_ie(cmsg->BC, commands[AT_BC]+5); | |
1332 | strcpy(commands[AT_BC] + l - 2, "\r"); | |
1333 | } else if (cip2bchlc[cmsg->CIPValue].bc) { | |
1334 | l = strlen(cip2bchlc[cmsg->CIPValue].bc) + 7; | |
1335 | commands[AT_BC] = kmalloc(l, GFP_KERNEL); | |
1336 | if (!commands[AT_BC]) | |
1337 | goto oom; | |
1338 | snprintf(commands[AT_BC], l, "^SBC=%s\r", | |
1339 | cip2bchlc[cmsg->CIPValue].bc); | |
1340 | } | |
1341 | ||
1342 | /* check/encode parameter: HLC */ | |
1343 | if (cmsg->HLC && cmsg->HLC[0]) { | |
1344 | /* explicit HLC overrides CIP */ | |
1345 | l = 2*cmsg->HLC[0] + 7; | |
1346 | commands[AT_HLC] = kmalloc(l, GFP_KERNEL); | |
1347 | if (!commands[AT_HLC]) | |
1348 | goto oom; | |
1349 | strcpy(commands[AT_HLC], "^SHLC="); | |
1350 | decode_ie(cmsg->HLC, commands[AT_HLC]+5); | |
1351 | strcpy(commands[AT_HLC] + l - 2, "\r"); | |
1352 | } else if (cip2bchlc[cmsg->CIPValue].hlc) { | |
1353 | l = strlen(cip2bchlc[cmsg->CIPValue].hlc) + 7; | |
1354 | commands[AT_HLC] = kmalloc(l, GFP_KERNEL); | |
1355 | if (!commands[AT_HLC]) | |
1356 | goto oom; | |
1357 | snprintf(commands[AT_HLC], l, "^SHLC=%s\r", | |
1358 | cip2bchlc[cmsg->CIPValue].hlc); | |
1359 | } | |
1360 | ||
1361 | /* check/encode parameter: B Protocol */ | |
1362 | if (cmsg->BProtocol == CAPI_DEFAULT) { | |
1363 | bcs->proto2 = L2_HDLC; | |
1364 | dev_warn(cs->dev, | |
1365 | "B2 Protocol X.75 SLP unsupported, using Transparent\n"); | |
1366 | } else { | |
1367 | switch (cmsg->B1protocol) { | |
1368 | case 0: | |
1369 | bcs->proto2 = L2_HDLC; | |
1370 | break; | |
1371 | case 1: | |
1372 | bcs->proto2 = L2_BITSYNC; | |
1373 | break; | |
1374 | default: | |
1375 | dev_warn(cs->dev, | |
1376 | "B1 Protocol %u unsupported, using Transparent\n", | |
1377 | cmsg->B1protocol); | |
1378 | bcs->proto2 = L2_BITSYNC; | |
1379 | } | |
1380 | if (cmsg->B2protocol != 1) | |
1381 | dev_warn(cs->dev, | |
1382 | "B2 Protocol %u unsupported, using Transparent\n", | |
1383 | cmsg->B2protocol); | |
1384 | if (cmsg->B3protocol != 0) | |
1385 | dev_warn(cs->dev, | |
1386 | "B3 Protocol %u unsupported, using Transparent\n", | |
1387 | cmsg->B3protocol); | |
1388 | ignore_cstruct_param(cs, cmsg->B1configuration, | |
1389 | "CONNECT_REQ", "B1 Configuration"); | |
1390 | ignore_cstruct_param(cs, cmsg->B2configuration, | |
1391 | "CONNECT_REQ", "B2 Configuration"); | |
1392 | ignore_cstruct_param(cs, cmsg->B3configuration, | |
1393 | "CONNECT_REQ", "B3 Configuration"); | |
1394 | } | |
1395 | commands[AT_PROTO] = kmalloc(9, GFP_KERNEL); | |
1396 | if (!commands[AT_PROTO]) | |
1397 | goto oom; | |
1398 | snprintf(commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2); | |
1399 | ||
1400 | /* ToDo: check/encode remaining parameters */ | |
1401 | ignore_cstruct_param(cs, cmsg->CalledPartySubaddress, | |
1402 | "CONNECT_REQ", "Called pty subaddr"); | |
1403 | ignore_cstruct_param(cs, cmsg->CallingPartySubaddress, | |
1404 | "CONNECT_REQ", "Calling pty subaddr"); | |
1405 | ignore_cstruct_param(cs, cmsg->LLC, | |
1406 | "CONNECT_REQ", "LLC"); | |
6c911916 TS |
1407 | if (cmsg->AdditionalInfo != CAPI_DEFAULT) { |
1408 | ignore_cstruct_param(cs, cmsg->BChannelinformation, | |
1409 | "CONNECT_REQ", "B Channel Information"); | |
1410 | ignore_cstruct_param(cs, cmsg->Keypadfacility, | |
1411 | "CONNECT_REQ", "Keypad Facility"); | |
1412 | ignore_cstruct_param(cs, cmsg->Useruserdata, | |
1413 | "CONNECT_REQ", "User-User Data"); | |
1414 | ignore_cstruct_param(cs, cmsg->Facilitydataarray, | |
1415 | "CONNECT_REQ", "Facility Data Array"); | |
1416 | } | |
7bb5fdc2 TS |
1417 | |
1418 | /* encode parameter: B channel to use */ | |
1419 | commands[AT_ISO] = kmalloc(9, GFP_KERNEL); | |
1420 | if (!commands[AT_ISO]) | |
1421 | goto oom; | |
1422 | snprintf(commands[AT_ISO], 9, "^SISO=%u\r", | |
1423 | (unsigned) bcs->channel + 1); | |
1424 | ||
1425 | /* queue & schedule EV_DIAL event */ | |
1426 | if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, commands, | |
1427 | bcs->at_state.seq_index, NULL)) | |
1428 | goto oom; | |
1429 | gig_dbg(DEBUG_CMD, "scheduling DIAL"); | |
1430 | gigaset_schedule_event(cs); | |
1431 | ap->connected = APCONN_SETUP; | |
1432 | send_conf(iif, ap, skb, CapiSuccess); | |
1433 | return; | |
1434 | ||
1435 | oom: | |
1436 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1437 | info = CAPI_MSGOSRESOURCEERR; | |
1438 | error: | |
1439 | if (commands) | |
1440 | for (i = 0; i < AT_NUM; i++) | |
1441 | kfree(commands[i]); | |
1442 | kfree(commands); | |
1443 | gigaset_free_channel(bcs); | |
1444 | send_conf(iif, ap, skb, info); | |
1445 | } | |
1446 | ||
1447 | /* | |
1448 | * process CONNECT_RESP message | |
1449 | * checks protocol parameters and queues an ACCEPT or HUP event | |
1450 | */ | |
1451 | static void do_connect_resp(struct gigaset_capi_ctr *iif, | |
1452 | struct gigaset_capi_appl *ap, | |
1453 | struct sk_buff *skb) | |
1454 | { | |
1455 | struct cardstate *cs = iif->ctr.driverdata; | |
1456 | _cmsg *cmsg = &iif->acmsg; | |
1457 | struct bc_state *bcs; | |
1458 | struct gigaset_capi_appl *oap; | |
1459 | int channel; | |
1460 | ||
1461 | /* decode message */ | |
6c911916 TS |
1462 | capi_message2cmsg(cmsg, skb->data); |
1463 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1464 | dev_kfree_skb(skb); |
1465 | ||
1466 | /* extract and check channel number from PLCI */ | |
1467 | channel = (cmsg->adr.adrPLCI >> 8) & 0xff; | |
1468 | if (!channel || channel > cs->channels) { | |
1469 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", | |
1470 | "CONNECT_RESP", "PLCI", cmsg->adr.adrPLCI); | |
1471 | return; | |
1472 | } | |
1473 | bcs = cs->bcs + channel - 1; | |
1474 | ||
1475 | switch (cmsg->Reject) { | |
1476 | case 0: /* Accept */ | |
1477 | /* drop all competing applications, keep only this one */ | |
1478 | for (oap = bcs->ap; oap != NULL; oap = oap->bcnext) | |
1479 | if (oap != ap) | |
1480 | send_disconnect_ind(bcs, oap, | |
1481 | CapiCallGivenToOtherApplication); | |
1482 | ap->bcnext = NULL; | |
1483 | bcs->ap = ap; | |
1484 | bcs->chstate |= CHS_NOTIFY_LL; | |
1485 | ||
1486 | /* check/encode B channel protocol */ | |
1487 | if (cmsg->BProtocol == CAPI_DEFAULT) { | |
1488 | bcs->proto2 = L2_HDLC; | |
1489 | dev_warn(cs->dev, | |
1490 | "B2 Protocol X.75 SLP unsupported, using Transparent\n"); | |
1491 | } else { | |
1492 | switch (cmsg->B1protocol) { | |
1493 | case 0: | |
1494 | bcs->proto2 = L2_HDLC; | |
1495 | break; | |
1496 | case 1: | |
1497 | bcs->proto2 = L2_BITSYNC; | |
1498 | break; | |
1499 | default: | |
1500 | dev_warn(cs->dev, | |
1501 | "B1 Protocol %u unsupported, using Transparent\n", | |
1502 | cmsg->B1protocol); | |
1503 | bcs->proto2 = L2_BITSYNC; | |
1504 | } | |
1505 | if (cmsg->B2protocol != 1) | |
1506 | dev_warn(cs->dev, | |
1507 | "B2 Protocol %u unsupported, using Transparent\n", | |
1508 | cmsg->B2protocol); | |
1509 | if (cmsg->B3protocol != 0) | |
1510 | dev_warn(cs->dev, | |
1511 | "B3 Protocol %u unsupported, using Transparent\n", | |
1512 | cmsg->B3protocol); | |
1513 | ignore_cstruct_param(cs, cmsg->B1configuration, | |
1514 | "CONNECT_RESP", "B1 Configuration"); | |
1515 | ignore_cstruct_param(cs, cmsg->B2configuration, | |
1516 | "CONNECT_RESP", "B2 Configuration"); | |
1517 | ignore_cstruct_param(cs, cmsg->B3configuration, | |
1518 | "CONNECT_RESP", "B3 Configuration"); | |
1519 | } | |
1520 | ||
1521 | /* ToDo: check/encode remaining parameters */ | |
1522 | ignore_cstruct_param(cs, cmsg->ConnectedNumber, | |
1523 | "CONNECT_RESP", "Connected Number"); | |
1524 | ignore_cstruct_param(cs, cmsg->ConnectedSubaddress, | |
1525 | "CONNECT_RESP", "Connected Subaddress"); | |
1526 | ignore_cstruct_param(cs, cmsg->LLC, | |
1527 | "CONNECT_RESP", "LLC"); | |
6c911916 TS |
1528 | if (cmsg->AdditionalInfo != CAPI_DEFAULT) { |
1529 | ignore_cstruct_param(cs, cmsg->BChannelinformation, | |
1530 | "CONNECT_RESP", "BChannel Information"); | |
1531 | ignore_cstruct_param(cs, cmsg->Keypadfacility, | |
1532 | "CONNECT_RESP", "Keypad Facility"); | |
1533 | ignore_cstruct_param(cs, cmsg->Useruserdata, | |
1534 | "CONNECT_RESP", "User-User Data"); | |
1535 | ignore_cstruct_param(cs, cmsg->Facilitydataarray, | |
1536 | "CONNECT_RESP", "Facility Data Array"); | |
1537 | } | |
7bb5fdc2 TS |
1538 | |
1539 | /* Accept call */ | |
1540 | if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state, | |
1541 | EV_ACCEPT, NULL, 0, NULL)) | |
1542 | return; | |
1543 | gig_dbg(DEBUG_CMD, "scheduling ACCEPT"); | |
1544 | gigaset_schedule_event(cs); | |
1545 | return; | |
1546 | ||
1547 | case 1: /* Ignore */ | |
1548 | /* send DISCONNECT_IND to this application */ | |
1549 | send_disconnect_ind(bcs, ap, 0); | |
1550 | ||
1551 | /* remove it from the list of listening apps */ | |
1552 | if (bcs->ap == ap) { | |
1553 | bcs->ap = ap->bcnext; | |
1554 | if (bcs->ap == NULL) | |
1555 | /* last one: stop ev-layer hupD notifications */ | |
1556 | bcs->chstate &= ~CHS_NOTIFY_LL; | |
1557 | return; | |
1558 | } | |
1559 | for (oap = bcs->ap; oap != NULL; oap = oap->bcnext) { | |
1560 | if (oap->bcnext == ap) { | |
1561 | oap->bcnext = oap->bcnext->bcnext; | |
1562 | return; | |
1563 | } | |
1564 | } | |
1565 | dev_err(cs->dev, "%s: application %u not found\n", | |
1566 | __func__, ap->id); | |
1567 | return; | |
1568 | ||
1569 | default: /* Reject */ | |
1570 | /* drop all competing applications, keep only this one */ | |
1571 | for (oap = bcs->ap; oap != NULL; oap = oap->bcnext) | |
1572 | if (oap != ap) | |
1573 | send_disconnect_ind(bcs, oap, | |
1574 | CapiCallGivenToOtherApplication); | |
1575 | ap->bcnext = NULL; | |
1576 | bcs->ap = ap; | |
1577 | ||
1578 | /* reject call - will trigger DISCONNECT_IND for this app */ | |
1579 | dev_info(cs->dev, "%s: Reject=%x\n", | |
1580 | "CONNECT_RESP", cmsg->Reject); | |
1581 | if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state, | |
1582 | EV_HUP, NULL, 0, NULL)) | |
1583 | return; | |
1584 | gig_dbg(DEBUG_CMD, "scheduling HUP"); | |
1585 | gigaset_schedule_event(cs); | |
1586 | return; | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | /* | |
1591 | * process CONNECT_B3_REQ message | |
1592 | * build NCCI and emit CONNECT_B3_CONF reply | |
1593 | */ | |
1594 | static void do_connect_b3_req(struct gigaset_capi_ctr *iif, | |
1595 | struct gigaset_capi_appl *ap, | |
1596 | struct sk_buff *skb) | |
1597 | { | |
1598 | struct cardstate *cs = iif->ctr.driverdata; | |
6c911916 | 1599 | _cmsg *cmsg = &iif->acmsg; |
7bb5fdc2 TS |
1600 | int channel; |
1601 | ||
1602 | /* decode message */ | |
6c911916 TS |
1603 | capi_message2cmsg(cmsg, skb->data); |
1604 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1605 | |
1606 | /* extract and check channel number from PLCI */ | |
6c911916 | 1607 | channel = (cmsg->adr.adrPLCI >> 8) & 0xff; |
7bb5fdc2 TS |
1608 | if (!channel || channel > cs->channels) { |
1609 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", | |
6c911916 | 1610 | "CONNECT_B3_REQ", "PLCI", cmsg->adr.adrPLCI); |
7bb5fdc2 TS |
1611 | send_conf(iif, ap, skb, CapiIllContrPlciNcci); |
1612 | return; | |
1613 | } | |
1614 | ||
1615 | /* mark logical connection active */ | |
1616 | ap->connected = APCONN_ACTIVE; | |
1617 | ||
1618 | /* build NCCI: always 1 (one B3 connection only) */ | |
6c911916 | 1619 | cmsg->adr.adrNCCI |= 1 << 16; |
7bb5fdc2 TS |
1620 | |
1621 | /* NCPI parameter: not applicable for B3 Transparent */ | |
6c911916 TS |
1622 | ignore_cstruct_param(cs, cmsg->NCPI, "CONNECT_B3_REQ", "NCPI"); |
1623 | send_conf(iif, ap, skb, (cmsg->NCPI && cmsg->NCPI[0]) ? | |
1624 | CapiNcpiNotSupportedByProtocol : CapiSuccess); | |
7bb5fdc2 TS |
1625 | } |
1626 | ||
1627 | /* | |
1628 | * process CONNECT_B3_RESP message | |
1629 | * Depending on the Reject parameter, either emit CONNECT_B3_ACTIVE_IND | |
1630 | * or queue EV_HUP and emit DISCONNECT_B3_IND. | |
1631 | * The emitted message is always shorter than the received one, | |
1632 | * allowing to reuse the skb. | |
1633 | */ | |
1634 | static void do_connect_b3_resp(struct gigaset_capi_ctr *iif, | |
1635 | struct gigaset_capi_appl *ap, | |
1636 | struct sk_buff *skb) | |
1637 | { | |
1638 | struct cardstate *cs = iif->ctr.driverdata; | |
6c911916 TS |
1639 | _cmsg *cmsg = &iif->acmsg; |
1640 | struct bc_state *bcs; | |
7bb5fdc2 TS |
1641 | int channel; |
1642 | unsigned int msgsize; | |
1643 | u8 command; | |
1644 | ||
1645 | /* decode message */ | |
6c911916 TS |
1646 | capi_message2cmsg(cmsg, skb->data); |
1647 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1648 | |
1649 | /* extract and check channel number and NCCI */ | |
6c911916 | 1650 | channel = (cmsg->adr.adrNCCI >> 8) & 0xff; |
7bb5fdc2 | 1651 | if (!channel || channel > cs->channels || |
6c911916 | 1652 | ((cmsg->adr.adrNCCI >> 16) & 0xffff) != 1) { |
7bb5fdc2 | 1653 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", |
6c911916 | 1654 | "CONNECT_B3_RESP", "NCCI", cmsg->adr.adrNCCI); |
7bb5fdc2 TS |
1655 | dev_kfree_skb(skb); |
1656 | return; | |
1657 | } | |
1658 | bcs = &cs->bcs[channel-1]; | |
1659 | ||
6c911916 | 1660 | if (cmsg->Reject) { |
7bb5fdc2 TS |
1661 | /* Reject: clear B3 connect received flag */ |
1662 | ap->connected = APCONN_SETUP; | |
1663 | ||
1664 | /* trigger hangup, causing eventual DISCONNECT_IND */ | |
1665 | if (!gigaset_add_event(cs, &bcs->at_state, | |
1666 | EV_HUP, NULL, 0, NULL)) { | |
1667 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1668 | dev_kfree_skb(skb); | |
1669 | return; | |
1670 | } | |
1671 | gig_dbg(DEBUG_CMD, "scheduling HUP"); | |
1672 | gigaset_schedule_event(cs); | |
1673 | ||
1674 | /* emit DISCONNECT_B3_IND */ | |
1675 | command = CAPI_DISCONNECT_B3; | |
1676 | msgsize = CAPI_DISCONNECT_B3_IND_BASELEN; | |
1677 | } else { | |
1678 | /* | |
1679 | * Accept: emit CONNECT_B3_ACTIVE_IND immediately, as | |
1680 | * we only send CONNECT_B3_IND if the B channel is up | |
1681 | */ | |
1682 | command = CAPI_CONNECT_B3_ACTIVE; | |
1683 | msgsize = CAPI_CONNECT_B3_ACTIVE_IND_BASELEN; | |
1684 | } | |
6c911916 TS |
1685 | capi_cmsg_header(cmsg, ap->id, command, CAPI_IND, |
1686 | ap->nextMessageNumber++, cmsg->adr.adrNCCI); | |
7bb5fdc2 | 1687 | __skb_trim(skb, msgsize); |
6c911916 TS |
1688 | capi_cmsg2message(cmsg, skb->data); |
1689 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1690 | capi_ctr_handle_message(&iif->ctr, ap->id, skb); |
1691 | } | |
1692 | ||
1693 | /* | |
1694 | * process DISCONNECT_REQ message | |
1695 | * schedule EV_HUP and emit DISCONNECT_B3_IND if necessary, | |
1696 | * emit DISCONNECT_CONF reply | |
1697 | */ | |
1698 | static void do_disconnect_req(struct gigaset_capi_ctr *iif, | |
1699 | struct gigaset_capi_appl *ap, | |
1700 | struct sk_buff *skb) | |
1701 | { | |
1702 | struct cardstate *cs = iif->ctr.driverdata; | |
6c911916 | 1703 | _cmsg *cmsg = &iif->acmsg; |
7bb5fdc2 TS |
1704 | struct bc_state *bcs; |
1705 | _cmsg *b3cmsg; | |
1706 | struct sk_buff *b3skb; | |
1707 | int channel; | |
1708 | ||
1709 | /* decode message */ | |
6c911916 TS |
1710 | capi_message2cmsg(cmsg, skb->data); |
1711 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1712 | |
1713 | /* extract and check channel number from PLCI */ | |
6c911916 | 1714 | channel = (cmsg->adr.adrPLCI >> 8) & 0xff; |
7bb5fdc2 TS |
1715 | if (!channel || channel > cs->channels) { |
1716 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", | |
6c911916 | 1717 | "DISCONNECT_REQ", "PLCI", cmsg->adr.adrPLCI); |
7bb5fdc2 TS |
1718 | send_conf(iif, ap, skb, CapiIllContrPlciNcci); |
1719 | return; | |
1720 | } | |
1721 | bcs = cs->bcs + channel - 1; | |
1722 | ||
1723 | /* ToDo: process parameter: Additional info */ | |
6c911916 TS |
1724 | if (cmsg->AdditionalInfo != CAPI_DEFAULT) { |
1725 | ignore_cstruct_param(cs, cmsg->BChannelinformation, | |
1726 | "DISCONNECT_REQ", "B Channel Information"); | |
1727 | ignore_cstruct_param(cs, cmsg->Keypadfacility, | |
1728 | "DISCONNECT_REQ", "Keypad Facility"); | |
1729 | ignore_cstruct_param(cs, cmsg->Useruserdata, | |
1730 | "DISCONNECT_REQ", "User-User Data"); | |
1731 | ignore_cstruct_param(cs, cmsg->Facilitydataarray, | |
1732 | "DISCONNECT_REQ", "Facility Data Array"); | |
1733 | } | |
7bb5fdc2 TS |
1734 | |
1735 | /* skip if DISCONNECT_IND already sent */ | |
1736 | if (!ap->connected) | |
1737 | return; | |
1738 | ||
1739 | /* check for active logical connection */ | |
1740 | if (ap->connected >= APCONN_ACTIVE) { | |
1741 | /* | |
1742 | * emit DISCONNECT_B3_IND with cause 0x3301 | |
1743 | * use separate cmsg structure, as the content of iif->acmsg | |
1744 | * is still needed for creating the _CONF message | |
1745 | */ | |
1746 | b3cmsg = kmalloc(sizeof(*b3cmsg), GFP_KERNEL); | |
1747 | if (!b3cmsg) { | |
1748 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1749 | send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); | |
1750 | return; | |
1751 | } | |
1752 | capi_cmsg_header(b3cmsg, ap->id, CAPI_DISCONNECT_B3, CAPI_IND, | |
1753 | ap->nextMessageNumber++, | |
6c911916 | 1754 | cmsg->adr.adrPLCI | (1 << 16)); |
7bb5fdc2 TS |
1755 | b3cmsg->Reason_B3 = CapiProtocolErrorLayer1; |
1756 | b3skb = alloc_skb(CAPI_DISCONNECT_B3_IND_BASELEN, GFP_KERNEL); | |
1757 | if (b3skb == NULL) { | |
1758 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1759 | send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); | |
1760 | return; | |
1761 | } | |
1762 | capi_cmsg2message(b3cmsg, | |
1763 | __skb_put(b3skb, CAPI_DISCONNECT_B3_IND_BASELEN)); | |
1764 | kfree(b3cmsg); | |
1765 | capi_ctr_handle_message(&iif->ctr, ap->id, b3skb); | |
1766 | } | |
1767 | ||
1768 | /* trigger hangup, causing eventual DISCONNECT_IND */ | |
1769 | if (!gigaset_add_event(cs, &bcs->at_state, EV_HUP, NULL, 0, NULL)) { | |
1770 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1771 | send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); | |
1772 | return; | |
1773 | } | |
1774 | gig_dbg(DEBUG_CMD, "scheduling HUP"); | |
1775 | gigaset_schedule_event(cs); | |
1776 | ||
1777 | /* emit reply */ | |
1778 | send_conf(iif, ap, skb, CapiSuccess); | |
1779 | } | |
1780 | ||
1781 | /* | |
1782 | * process DISCONNECT_B3_REQ message | |
1783 | * schedule EV_HUP and emit DISCONNECT_B3_CONF reply | |
1784 | */ | |
1785 | static void do_disconnect_b3_req(struct gigaset_capi_ctr *iif, | |
1786 | struct gigaset_capi_appl *ap, | |
1787 | struct sk_buff *skb) | |
1788 | { | |
1789 | struct cardstate *cs = iif->ctr.driverdata; | |
6c911916 | 1790 | _cmsg *cmsg = &iif->acmsg; |
7bb5fdc2 TS |
1791 | int channel; |
1792 | ||
1793 | /* decode message */ | |
6c911916 TS |
1794 | capi_message2cmsg(cmsg, skb->data); |
1795 | dump_cmsg(DEBUG_CMD, __func__, cmsg); | |
7bb5fdc2 TS |
1796 | |
1797 | /* extract and check channel number and NCCI */ | |
6c911916 | 1798 | channel = (cmsg->adr.adrNCCI >> 8) & 0xff; |
7bb5fdc2 | 1799 | if (!channel || channel > cs->channels || |
6c911916 | 1800 | ((cmsg->adr.adrNCCI >> 16) & 0xffff) != 1) { |
7bb5fdc2 | 1801 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", |
6c911916 | 1802 | "DISCONNECT_B3_REQ", "NCCI", cmsg->adr.adrNCCI); |
7bb5fdc2 TS |
1803 | send_conf(iif, ap, skb, CapiIllContrPlciNcci); |
1804 | return; | |
1805 | } | |
1806 | ||
1807 | /* reject if logical connection not active */ | |
1808 | if (ap->connected < APCONN_ACTIVE) { | |
1809 | send_conf(iif, ap, skb, | |
1810 | CapiMessageNotSupportedInCurrentState); | |
1811 | return; | |
1812 | } | |
1813 | ||
1814 | /* trigger hangup, causing eventual DISCONNECT_B3_IND */ | |
1815 | if (!gigaset_add_event(cs, &cs->bcs[channel-1].at_state, | |
1816 | EV_HUP, NULL, 0, NULL)) { | |
1817 | dev_err(cs->dev, "%s: out of memory\n", __func__); | |
1818 | send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); | |
1819 | return; | |
1820 | } | |
1821 | gig_dbg(DEBUG_CMD, "scheduling HUP"); | |
1822 | gigaset_schedule_event(cs); | |
1823 | ||
1824 | /* NCPI parameter: not applicable for B3 Transparent */ | |
6c911916 | 1825 | ignore_cstruct_param(cs, cmsg->NCPI, |
7bb5fdc2 | 1826 | "DISCONNECT_B3_REQ", "NCPI"); |
6c911916 TS |
1827 | send_conf(iif, ap, skb, (cmsg->NCPI && cmsg->NCPI[0]) ? |
1828 | CapiNcpiNotSupportedByProtocol : CapiSuccess); | |
7bb5fdc2 TS |
1829 | } |
1830 | ||
1831 | /* | |
1832 | * process DATA_B3_REQ message | |
1833 | */ | |
1834 | static void do_data_b3_req(struct gigaset_capi_ctr *iif, | |
1835 | struct gigaset_capi_appl *ap, | |
1836 | struct sk_buff *skb) | |
1837 | { | |
1838 | struct cardstate *cs = iif->ctr.driverdata; | |
1839 | int channel = CAPIMSG_PLCI_PART(skb->data); | |
1840 | u16 ncci = CAPIMSG_NCCI_PART(skb->data); | |
1841 | u16 msglen = CAPIMSG_LEN(skb->data); | |
1842 | u16 datalen = CAPIMSG_DATALEN(skb->data); | |
1843 | u16 flags = CAPIMSG_FLAGS(skb->data); | |
1844 | ||
1845 | /* frequent message, avoid _cmsg overhead */ | |
1846 | dump_rawmsg(DEBUG_LLDATA, "DATA_B3_REQ", skb->data); | |
1847 | ||
1848 | gig_dbg(DEBUG_LLDATA, | |
1849 | "Receiving data from LL (ch: %d, flg: %x, sz: %d|%d)", | |
1850 | channel, flags, msglen, datalen); | |
1851 | ||
1852 | /* check parameters */ | |
1853 | if (channel == 0 || channel > cs->channels || ncci != 1) { | |
1854 | dev_notice(cs->dev, "%s: invalid %s 0x%02x\n", | |
1855 | "DATA_B3_REQ", "NCCI", CAPIMSG_NCCI(skb->data)); | |
1856 | send_conf(iif, ap, skb, CapiIllContrPlciNcci); | |
1857 | return; | |
1858 | } | |
1859 | if (msglen != CAPI_DATA_B3_REQ_LEN && msglen != CAPI_DATA_B3_REQ_LEN64) | |
1860 | dev_notice(cs->dev, "%s: unexpected length %d\n", | |
1861 | "DATA_B3_REQ", msglen); | |
1862 | if (msglen + datalen != skb->len) | |
1863 | dev_notice(cs->dev, "%s: length mismatch (%d+%d!=%d)\n", | |
1864 | "DATA_B3_REQ", msglen, datalen, skb->len); | |
1865 | if (msglen + datalen > skb->len) { | |
1866 | /* message too short for announced data length */ | |
1867 | send_conf(iif, ap, skb, CapiIllMessageParmCoding); /* ? */ | |
1868 | return; | |
1869 | } | |
1870 | if (flags & CAPI_FLAGS_RESERVED) { | |
1871 | dev_notice(cs->dev, "%s: reserved flags set (%x)\n", | |
1872 | "DATA_B3_REQ", flags); | |
1873 | send_conf(iif, ap, skb, CapiIllMessageParmCoding); | |
1874 | return; | |
1875 | } | |
1876 | ||
1877 | /* reject if logical connection not active */ | |
1878 | if (ap->connected < APCONN_ACTIVE) { | |
1879 | send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState); | |
1880 | return; | |
1881 | } | |
1882 | ||
1883 | /* | |
1884 | * pull CAPI message from skb, | |
1885 | * pass payload data to device-specific module | |
1886 | * CAPI message will be preserved in headroom | |
1887 | */ | |
1888 | skb_pull(skb, msglen); | |
1889 | if (cs->ops->send_skb(&cs->bcs[channel-1], skb) < 0) { | |
1890 | send_conf(iif, ap, skb, CAPI_MSGOSRESOURCEERR); | |
1891 | return; | |
1892 | } | |
1893 | ||
1894 | /* DATA_B3_CONF reply will be sent by gigaset_skb_sent() */ | |
1895 | ||
1896 | /* | |
1897 | * ToDo: honor unset "delivery confirmation" bit | |
1898 | * (send DATA_B3_CONF immediately?) | |
1899 | */ | |
1900 | } | |
1901 | ||
1902 | /* | |
1903 | * process RESET_B3_REQ message | |
1904 | * just always reply "not supported by current protocol" | |
1905 | */ | |
1906 | static void do_reset_b3_req(struct gigaset_capi_ctr *iif, | |
1907 | struct gigaset_capi_appl *ap, | |
1908 | struct sk_buff *skb) | |
1909 | { | |
1910 | /* decode message */ | |
1911 | capi_message2cmsg(&iif->acmsg, skb->data); | |
1912 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1913 | send_conf(iif, ap, skb, | |
1914 | CapiResetProcedureNotSupportedByCurrentProtocol); | |
1915 | } | |
1916 | ||
1917 | /* | |
1918 | * dump unsupported/ignored messages at most twice per minute, | |
1919 | * some apps send those very frequently | |
1920 | */ | |
1921 | static unsigned long ignored_msg_dump_time; | |
1922 | ||
1923 | /* | |
1924 | * unsupported CAPI message handler | |
1925 | */ | |
1926 | static void do_unsupported(struct gigaset_capi_ctr *iif, | |
1927 | struct gigaset_capi_appl *ap, | |
1928 | struct sk_buff *skb) | |
1929 | { | |
1930 | /* decode message */ | |
1931 | capi_message2cmsg(&iif->acmsg, skb->data); | |
1932 | if (printk_timed_ratelimit(&ignored_msg_dump_time, 30 * 1000)) | |
1933 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1934 | send_conf(iif, ap, skb, CapiMessageNotSupportedInCurrentState); | |
1935 | } | |
1936 | ||
1937 | /* | |
1938 | * CAPI message handler: no-op | |
1939 | */ | |
1940 | static void do_nothing(struct gigaset_capi_ctr *iif, | |
1941 | struct gigaset_capi_appl *ap, | |
1942 | struct sk_buff *skb) | |
1943 | { | |
1944 | if (printk_timed_ratelimit(&ignored_msg_dump_time, 30 * 1000)) { | |
1945 | /* decode message */ | |
1946 | capi_message2cmsg(&iif->acmsg, skb->data); | |
1947 | dump_cmsg(DEBUG_CMD, __func__, &iif->acmsg); | |
1948 | } | |
1949 | dev_kfree_skb(skb); | |
1950 | } | |
1951 | ||
1952 | static void do_data_b3_resp(struct gigaset_capi_ctr *iif, | |
1953 | struct gigaset_capi_appl *ap, | |
1954 | struct sk_buff *skb) | |
1955 | { | |
1956 | dump_rawmsg(DEBUG_LLDATA, __func__, skb->data); | |
1957 | dev_kfree_skb(skb); | |
1958 | } | |
1959 | ||
1960 | /* table of outgoing CAPI message handlers with lookup function */ | |
1961 | typedef void (*capi_send_handler_t)(struct gigaset_capi_ctr *, | |
1962 | struct gigaset_capi_appl *, | |
1963 | struct sk_buff *); | |
1964 | ||
1965 | static struct { | |
1966 | u16 cmd; | |
1967 | capi_send_handler_t handler; | |
1968 | } capi_send_handler_table[] = { | |
1969 | /* most frequent messages first for faster lookup */ | |
1970 | { CAPI_DATA_B3_REQ, do_data_b3_req }, | |
1971 | { CAPI_DATA_B3_RESP, do_data_b3_resp }, | |
1972 | ||
1973 | { CAPI_ALERT_REQ, do_alert_req }, | |
1974 | { CAPI_CONNECT_ACTIVE_RESP, do_nothing }, | |
1975 | { CAPI_CONNECT_B3_ACTIVE_RESP, do_nothing }, | |
1976 | { CAPI_CONNECT_B3_REQ, do_connect_b3_req }, | |
1977 | { CAPI_CONNECT_B3_RESP, do_connect_b3_resp }, | |
1978 | { CAPI_CONNECT_B3_T90_ACTIVE_RESP, do_nothing }, | |
1979 | { CAPI_CONNECT_REQ, do_connect_req }, | |
1980 | { CAPI_CONNECT_RESP, do_connect_resp }, | |
1981 | { CAPI_DISCONNECT_B3_REQ, do_disconnect_b3_req }, | |
1982 | { CAPI_DISCONNECT_B3_RESP, do_nothing }, | |
1983 | { CAPI_DISCONNECT_REQ, do_disconnect_req }, | |
1984 | { CAPI_DISCONNECT_RESP, do_nothing }, | |
1985 | { CAPI_FACILITY_REQ, do_facility_req }, | |
1986 | { CAPI_FACILITY_RESP, do_nothing }, | |
1987 | { CAPI_LISTEN_REQ, do_listen_req }, | |
1988 | { CAPI_SELECT_B_PROTOCOL_REQ, do_unsupported }, | |
1989 | { CAPI_RESET_B3_REQ, do_reset_b3_req }, | |
1990 | { CAPI_RESET_B3_RESP, do_nothing }, | |
1991 | ||
1992 | /* | |
1993 | * ToDo: support overlap sending (requires ev-layer state | |
1994 | * machine extension to generate additional ATD commands) | |
1995 | */ | |
1996 | { CAPI_INFO_REQ, do_unsupported }, | |
1997 | { CAPI_INFO_RESP, do_nothing }, | |
1998 | ||
1999 | /* | |
2000 | * ToDo: what's the proper response for these? | |
2001 | */ | |
2002 | { CAPI_MANUFACTURER_REQ, do_nothing }, | |
2003 | { CAPI_MANUFACTURER_RESP, do_nothing }, | |
2004 | }; | |
2005 | ||
2006 | /* look up handler */ | |
2007 | static inline capi_send_handler_t lookup_capi_send_handler(const u16 cmd) | |
2008 | { | |
2009 | size_t i; | |
2010 | ||
2011 | for (i = 0; i < ARRAY_SIZE(capi_send_handler_table); i++) | |
2012 | if (capi_send_handler_table[i].cmd == cmd) | |
2013 | return capi_send_handler_table[i].handler; | |
2014 | return NULL; | |
2015 | } | |
2016 | ||
2017 | ||
2018 | /** | |
2019 | * gigaset_send_message() - accept a CAPI message from an application | |
2020 | * @ctr: controller descriptor structure. | |
2021 | * @skb: CAPI message. | |
2022 | * | |
2023 | * Return value: CAPI error code | |
2024 | * Note: capidrv (and probably others, too) only uses the return value to | |
2025 | * decide whether it has to free the skb (only if result != CAPI_NOERROR (0)) | |
2026 | */ | |
2027 | static u16 gigaset_send_message(struct capi_ctr *ctr, struct sk_buff *skb) | |
2028 | { | |
2029 | struct gigaset_capi_ctr *iif | |
2030 | = container_of(ctr, struct gigaset_capi_ctr, ctr); | |
2031 | struct cardstate *cs = ctr->driverdata; | |
2032 | struct gigaset_capi_appl *ap; | |
2033 | capi_send_handler_t handler; | |
2034 | ||
2035 | /* can only handle linear sk_buffs */ | |
2036 | if (skb_linearize(skb) < 0) { | |
2037 | dev_warn(cs->dev, "%s: skb_linearize failed\n", __func__); | |
2038 | return CAPI_MSGOSRESOURCEERR; | |
2039 | } | |
2040 | ||
2041 | /* retrieve application data structure */ | |
2042 | ap = get_appl(iif, CAPIMSG_APPID(skb->data)); | |
2043 | if (!ap) { | |
2044 | dev_notice(cs->dev, "%s: application %u not registered\n", | |
2045 | __func__, CAPIMSG_APPID(skb->data)); | |
2046 | return CAPI_ILLAPPNR; | |
2047 | } | |
2048 | ||
2049 | /* look up command */ | |
2050 | handler = lookup_capi_send_handler(CAPIMSG_CMD(skb->data)); | |
2051 | if (!handler) { | |
2052 | /* unknown/unsupported message type */ | |
2053 | if (printk_ratelimit()) | |
2054 | dev_notice(cs->dev, "%s: unsupported message %u\n", | |
2055 | __func__, CAPIMSG_CMD(skb->data)); | |
2056 | return CAPI_ILLCMDORSUBCMDORMSGTOSMALL; | |
2057 | } | |
2058 | ||
2059 | /* serialize */ | |
2060 | if (atomic_add_return(1, &iif->sendqlen) > 1) { | |
2061 | /* queue behind other messages */ | |
2062 | skb_queue_tail(&iif->sendqueue, skb); | |
2063 | return CAPI_NOERROR; | |
2064 | } | |
2065 | ||
2066 | /* process message */ | |
2067 | handler(iif, ap, skb); | |
2068 | ||
2069 | /* process other messages arrived in the meantime */ | |
2070 | while (atomic_sub_return(1, &iif->sendqlen) > 0) { | |
2071 | skb = skb_dequeue(&iif->sendqueue); | |
2072 | if (!skb) { | |
2073 | /* should never happen */ | |
2074 | dev_err(cs->dev, "%s: send queue empty\n", __func__); | |
2075 | continue; | |
2076 | } | |
2077 | ap = get_appl(iif, CAPIMSG_APPID(skb->data)); | |
2078 | if (!ap) { | |
2079 | /* could that happen? */ | |
2080 | dev_warn(cs->dev, "%s: application %u vanished\n", | |
2081 | __func__, CAPIMSG_APPID(skb->data)); | |
2082 | continue; | |
2083 | } | |
2084 | handler = lookup_capi_send_handler(CAPIMSG_CMD(skb->data)); | |
2085 | if (!handler) { | |
2086 | /* should never happen */ | |
2087 | dev_err(cs->dev, "%s: handler %x vanished\n", | |
2088 | __func__, CAPIMSG_CMD(skb->data)); | |
2089 | continue; | |
2090 | } | |
2091 | handler(iif, ap, skb); | |
2092 | } | |
2093 | ||
2094 | return CAPI_NOERROR; | |
2095 | } | |
2096 | ||
2097 | /** | |
2098 | * gigaset_procinfo() - build single line description for controller | |
2099 | * @ctr: controller descriptor structure. | |
2100 | * | |
2101 | * Return value: pointer to generated string (null terminated) | |
2102 | */ | |
2103 | static char *gigaset_procinfo(struct capi_ctr *ctr) | |
2104 | { | |
2105 | return ctr->name; /* ToDo: more? */ | |
2106 | } | |
2107 | ||
2108 | /** | |
2109 | * gigaset_ctr_read_proc() - build controller proc file entry | |
2110 | * @page: buffer of PAGE_SIZE bytes for receiving the entry. | |
2111 | * @start: unused. | |
2112 | * @off: unused. | |
2113 | * @count: unused. | |
2114 | * @eof: unused. | |
2115 | * @ctr: controller descriptor structure. | |
2116 | * | |
2117 | * Return value: length of generated entry | |
2118 | */ | |
2119 | static int gigaset_ctr_read_proc(char *page, char **start, off_t off, | |
2120 | int count, int *eof, struct capi_ctr *ctr) | |
2121 | { | |
2122 | struct cardstate *cs = ctr->driverdata; | |
2123 | char *s; | |
2124 | int i; | |
2125 | int len = 0; | |
2126 | len += sprintf(page+len, "%-16s %s\n", "name", ctr->name); | |
2127 | len += sprintf(page+len, "%-16s %s %s\n", "dev", | |
2128 | dev_driver_string(cs->dev), dev_name(cs->dev)); | |
2129 | len += sprintf(page+len, "%-16s %d\n", "id", cs->myid); | |
2130 | if (cs->gotfwver) | |
2131 | len += sprintf(page+len, "%-16s %d.%d.%d.%d\n", "firmware", | |
2132 | cs->fwver[0], cs->fwver[1], cs->fwver[2], cs->fwver[3]); | |
2133 | len += sprintf(page+len, "%-16s %d\n", "channels", | |
2134 | cs->channels); | |
2135 | len += sprintf(page+len, "%-16s %s\n", "onechannel", | |
2136 | cs->onechannel ? "yes" : "no"); | |
2137 | ||
2138 | switch (cs->mode) { | |
2139 | case M_UNKNOWN: | |
2140 | s = "unknown"; | |
2141 | break; | |
2142 | case M_CONFIG: | |
2143 | s = "config"; | |
2144 | break; | |
2145 | case M_UNIMODEM: | |
2146 | s = "Unimodem"; | |
2147 | break; | |
2148 | case M_CID: | |
2149 | s = "CID"; | |
2150 | break; | |
2151 | default: | |
2152 | s = "??"; | |
2153 | } | |
2154 | len += sprintf(page+len, "%-16s %s\n", "mode", s); | |
2155 | ||
2156 | switch (cs->mstate) { | |
2157 | case MS_UNINITIALIZED: | |
2158 | s = "uninitialized"; | |
2159 | break; | |
2160 | case MS_INIT: | |
2161 | s = "init"; | |
2162 | break; | |
2163 | case MS_LOCKED: | |
2164 | s = "locked"; | |
2165 | break; | |
2166 | case MS_SHUTDOWN: | |
2167 | s = "shutdown"; | |
2168 | break; | |
2169 | case MS_RECOVER: | |
2170 | s = "recover"; | |
2171 | break; | |
2172 | case MS_READY: | |
2173 | s = "ready"; | |
2174 | break; | |
2175 | default: | |
2176 | s = "??"; | |
2177 | } | |
2178 | len += sprintf(page+len, "%-16s %s\n", "mstate", s); | |
2179 | ||
2180 | len += sprintf(page+len, "%-16s %s\n", "running", | |
2181 | cs->running ? "yes" : "no"); | |
2182 | len += sprintf(page+len, "%-16s %s\n", "connected", | |
2183 | cs->connected ? "yes" : "no"); | |
2184 | len += sprintf(page+len, "%-16s %s\n", "isdn_up", | |
2185 | cs->isdn_up ? "yes" : "no"); | |
2186 | len += sprintf(page+len, "%-16s %s\n", "cidmode", | |
2187 | cs->cidmode ? "yes" : "no"); | |
2188 | ||
2189 | for (i = 0; i < cs->channels; i++) { | |
2190 | len += sprintf(page+len, "[%d]%-13s %d\n", i, "corrupted", | |
2191 | cs->bcs[i].corrupted); | |
2192 | len += sprintf(page+len, "[%d]%-13s %d\n", i, "trans_down", | |
2193 | cs->bcs[i].trans_down); | |
2194 | len += sprintf(page+len, "[%d]%-13s %d\n", i, "trans_up", | |
2195 | cs->bcs[i].trans_up); | |
2196 | len += sprintf(page+len, "[%d]%-13s %d\n", i, "chstate", | |
2197 | cs->bcs[i].chstate); | |
2198 | switch (cs->bcs[i].proto2) { | |
2199 | case L2_BITSYNC: | |
2200 | s = "bitsync"; | |
2201 | break; | |
2202 | case L2_HDLC: | |
2203 | s = "HDLC"; | |
2204 | break; | |
2205 | case L2_VOICE: | |
2206 | s = "voice"; | |
2207 | break; | |
2208 | default: | |
2209 | s = "??"; | |
2210 | } | |
2211 | len += sprintf(page+len, "[%d]%-13s %s\n", i, "proto2", s); | |
2212 | } | |
2213 | return len; | |
2214 | } | |
2215 | ||
2216 | ||
2217 | static struct capi_driver capi_driver_gigaset = { | |
2218 | .name = "gigaset", | |
2219 | .revision = "1.0", | |
2220 | }; | |
2221 | ||
2222 | /** | |
2223 | * gigaset_isdn_register() - register to LL | |
2224 | * @cs: device descriptor structure. | |
2225 | * @isdnid: device name. | |
2226 | * | |
2227 | * Called by main module to register the device with the LL. | |
2228 | * | |
2229 | * Return value: 1 for success, 0 for failure | |
2230 | */ | |
2231 | int gigaset_isdn_register(struct cardstate *cs, const char *isdnid) | |
2232 | { | |
2233 | struct gigaset_capi_ctr *iif; | |
2234 | int rc; | |
2235 | ||
2236 | pr_info("Kernel CAPI interface\n"); | |
2237 | ||
2238 | iif = kmalloc(sizeof(*iif), GFP_KERNEL); | |
2239 | if (!iif) { | |
2240 | pr_err("%s: out of memory\n", __func__); | |
2241 | return 0; | |
2242 | } | |
2243 | ||
2244 | /* register driver with CAPI (ToDo: what for?) */ | |
2245 | register_capi_driver(&capi_driver_gigaset); | |
2246 | ||
2247 | /* prepare controller structure */ | |
2248 | iif->ctr.owner = THIS_MODULE; | |
2249 | iif->ctr.driverdata = cs; | |
2250 | strncpy(iif->ctr.name, isdnid, sizeof(iif->ctr.name)); | |
2251 | iif->ctr.driver_name = "gigaset"; | |
2252 | iif->ctr.load_firmware = gigaset_load_firmware; | |
2253 | iif->ctr.reset_ctr = gigaset_reset_ctr; | |
2254 | iif->ctr.register_appl = gigaset_register_appl; | |
2255 | iif->ctr.release_appl = gigaset_release_appl; | |
2256 | iif->ctr.send_message = gigaset_send_message; | |
2257 | iif->ctr.procinfo = gigaset_procinfo; | |
2258 | iif->ctr.ctr_read_proc = gigaset_ctr_read_proc; | |
2259 | INIT_LIST_HEAD(&iif->appls); | |
2260 | skb_queue_head_init(&iif->sendqueue); | |
2261 | atomic_set(&iif->sendqlen, 0); | |
2262 | ||
2263 | /* register controller with CAPI */ | |
2264 | rc = attach_capi_ctr(&iif->ctr); | |
2265 | if (rc) { | |
2266 | pr_err("attach_capi_ctr failed (%d)\n", rc); | |
2267 | unregister_capi_driver(&capi_driver_gigaset); | |
2268 | kfree(iif); | |
2269 | return 0; | |
2270 | } | |
2271 | ||
2272 | cs->iif = iif; | |
2273 | cs->hw_hdr_len = CAPI_DATA_B3_REQ_LEN; | |
2274 | return 1; | |
2275 | } | |
2276 | ||
2277 | /** | |
2278 | * gigaset_isdn_unregister() - unregister from LL | |
2279 | * @cs: device descriptor structure. | |
2280 | * | |
2281 | * Called by main module to unregister the device from the LL. | |
2282 | */ | |
2283 | void gigaset_isdn_unregister(struct cardstate *cs) | |
2284 | { | |
2285 | struct gigaset_capi_ctr *iif = cs->iif; | |
2286 | ||
2287 | detach_capi_ctr(&iif->ctr); | |
2288 | kfree(iif); | |
2289 | cs->iif = NULL; | |
2290 | unregister_capi_driver(&capi_driver_gigaset); | |
2291 | } |