Commit | Line | Data |
---|---|---|
b482cd20 SB |
1 | /* |
2 | * Copyright (C) ST-Ericsson AB 2010 | |
3 | * Author: Sjur Brendeland/sjur.brandeland@stericsson.com | |
4 | * License terms: GNU General Public License (GPL) version 2 | |
5 | */ | |
6 | ||
7 | #include <linux/stddef.h> | |
8 | #include <linux/spinlock.h> | |
9 | #include <linux/slab.h> | |
10 | #include <net/caif/caif_layer.h> | |
11 | #include <net/caif/cfpkt.h> | |
12 | #include <net/caif/cfctrl.h> | |
13 | ||
14 | #define container_obj(layr) container_of(layr, struct cfctrl, serv.layer) | |
15 | #define UTILITY_NAME_LENGTH 16 | |
16 | #define CFPKT_CTRL_PKT_LEN 20 | |
17 | ||
18 | ||
19 | #ifdef CAIF_NO_LOOP | |
20 | static int handle_loop(struct cfctrl *ctrl, | |
21 | int cmd, struct cfpkt *pkt){ | |
2aa40aef | 22 | return -1; |
b482cd20 SB |
23 | } |
24 | #else | |
25 | static int handle_loop(struct cfctrl *ctrl, | |
26 | int cmd, struct cfpkt *pkt); | |
27 | #endif | |
28 | static int cfctrl_recv(struct cflayer *layr, struct cfpkt *pkt); | |
29 | static void cfctrl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl, | |
30 | int phyid); | |
31 | ||
32 | ||
33 | struct cflayer *cfctrl_create(void) | |
34 | { | |
8d545c8f | 35 | struct dev_info dev_info; |
b482cd20 SB |
36 | struct cfctrl *this = |
37 | kmalloc(sizeof(struct cfctrl), GFP_ATOMIC); | |
38 | if (!this) { | |
39 | pr_warning("CAIF: %s(): Out of memory\n", __func__); | |
40 | return NULL; | |
41 | } | |
42 | caif_assert(offsetof(struct cfctrl, serv.layer) == 0); | |
8d545c8f SB |
43 | memset(&dev_info, 0, sizeof(dev_info)); |
44 | dev_info.id = 0xff; | |
b482cd20 | 45 | memset(this, 0, sizeof(*this)); |
b1c74247 | 46 | cfsrvl_init(&this->serv, 0, &dev_info, false); |
b482cd20 SB |
47 | atomic_set(&this->req_seq_no, 1); |
48 | atomic_set(&this->rsp_seq_no, 1); | |
b482cd20 SB |
49 | this->serv.layer.receive = cfctrl_recv; |
50 | sprintf(this->serv.layer.name, "ctrl"); | |
51 | this->serv.layer.ctrlcmd = cfctrl_ctrlcmd; | |
52 | spin_lock_init(&this->loop_linkid_lock); | |
7aecf494 SB |
53 | spin_lock_init(&this->info_list_lock); |
54 | INIT_LIST_HEAD(&this->list); | |
b482cd20 SB |
55 | this->loop_linkid = 1; |
56 | return &this->serv.layer; | |
57 | } | |
58 | ||
59 | static bool param_eq(struct cfctrl_link_param *p1, struct cfctrl_link_param *p2) | |
60 | { | |
61 | bool eq = | |
62 | p1->linktype == p2->linktype && | |
63 | p1->priority == p2->priority && | |
64 | p1->phyid == p2->phyid && | |
65 | p1->endpoint == p2->endpoint && p1->chtype == p2->chtype; | |
66 | ||
67 | if (!eq) | |
68 | return false; | |
69 | ||
70 | switch (p1->linktype) { | |
71 | case CFCTRL_SRV_VEI: | |
72 | return true; | |
73 | case CFCTRL_SRV_DATAGRAM: | |
74 | return p1->u.datagram.connid == p2->u.datagram.connid; | |
75 | case CFCTRL_SRV_RFM: | |
76 | return | |
77 | p1->u.rfm.connid == p2->u.rfm.connid && | |
78 | strcmp(p1->u.rfm.volume, p2->u.rfm.volume) == 0; | |
79 | case CFCTRL_SRV_UTIL: | |
80 | return | |
81 | p1->u.utility.fifosize_kb == p2->u.utility.fifosize_kb | |
82 | && p1->u.utility.fifosize_bufs == | |
83 | p2->u.utility.fifosize_bufs | |
84 | && strcmp(p1->u.utility.name, p2->u.utility.name) == 0 | |
85 | && p1->u.utility.paramlen == p2->u.utility.paramlen | |
86 | && memcmp(p1->u.utility.params, p2->u.utility.params, | |
87 | p1->u.utility.paramlen) == 0; | |
88 | ||
89 | case CFCTRL_SRV_VIDEO: | |
90 | return p1->u.video.connid == p2->u.video.connid; | |
91 | case CFCTRL_SRV_DBG: | |
92 | return true; | |
93 | case CFCTRL_SRV_DECM: | |
94 | return false; | |
95 | default: | |
96 | return false; | |
97 | } | |
98 | return false; | |
99 | } | |
100 | ||
101 | bool cfctrl_req_eq(struct cfctrl_request_info *r1, | |
102 | struct cfctrl_request_info *r2) | |
103 | { | |
104 | if (r1->cmd != r2->cmd) | |
105 | return false; | |
106 | if (r1->cmd == CFCTRL_CMD_LINK_SETUP) | |
107 | return param_eq(&r1->param, &r2->param); | |
108 | else | |
109 | return r1->channel_id == r2->channel_id; | |
110 | } | |
111 | ||
112 | /* Insert request at the end */ | |
113 | void cfctrl_insert_req(struct cfctrl *ctrl, | |
114 | struct cfctrl_request_info *req) | |
115 | { | |
b482cd20 | 116 | spin_lock(&ctrl->info_list_lock); |
b482cd20 SB |
117 | atomic_inc(&ctrl->req_seq_no); |
118 | req->sequence_no = atomic_read(&ctrl->req_seq_no); | |
7aecf494 | 119 | list_add_tail(&req->list, &ctrl->list); |
b482cd20 SB |
120 | spin_unlock(&ctrl->info_list_lock); |
121 | } | |
122 | ||
b482cd20 SB |
123 | /* Compare and remove request */ |
124 | struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl, | |
125 | struct cfctrl_request_info *req) | |
126 | { | |
7aecf494 | 127 | struct cfctrl_request_info *p, *tmp, *first; |
b482cd20 SB |
128 | |
129 | spin_lock(&ctrl->info_list_lock); | |
7aecf494 | 130 | first = list_first_entry(&ctrl->list, struct cfctrl_request_info, list); |
b482cd20 | 131 | |
7aecf494 SB |
132 | list_for_each_entry_safe(p, tmp, &ctrl->list, list) { |
133 | if (cfctrl_req_eq(req, p)) { | |
134 | if (p != first) | |
135 | pr_warning("CAIF: %s(): Requests are not " | |
b482cd20 SB |
136 | "received in order\n", |
137 | __func__); | |
7aecf494 | 138 | |
b482cd20 | 139 | atomic_set(&ctrl->rsp_seq_no, |
7aecf494 SB |
140 | p->sequence_no); |
141 | list_del(&p->list); | |
142 | goto out; | |
b482cd20 | 143 | } |
b482cd20 | 144 | } |
7aecf494 SB |
145 | p = NULL; |
146 | out: | |
b482cd20 | 147 | spin_unlock(&ctrl->info_list_lock); |
7aecf494 | 148 | return p; |
b482cd20 SB |
149 | } |
150 | ||
151 | struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer) | |
152 | { | |
153 | struct cfctrl *this = container_obj(layer); | |
154 | return &this->res; | |
155 | } | |
156 | ||
157 | void cfctrl_set_dnlayer(struct cflayer *this, struct cflayer *dn) | |
158 | { | |
159 | this->dn = dn; | |
160 | } | |
161 | ||
162 | void cfctrl_set_uplayer(struct cflayer *this, struct cflayer *up) | |
163 | { | |
164 | this->up = up; | |
165 | } | |
166 | ||
167 | static void init_info(struct caif_payload_info *info, struct cfctrl *cfctrl) | |
168 | { | |
169 | info->hdr_len = 0; | |
170 | info->channel_id = cfctrl->serv.layer.id; | |
171 | info->dev_info = &cfctrl->serv.dev_info; | |
172 | } | |
173 | ||
174 | void cfctrl_enum_req(struct cflayer *layer, u8 physlinkid) | |
175 | { | |
176 | struct cfctrl *cfctrl = container_obj(layer); | |
177 | int ret; | |
178 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); | |
179 | if (!pkt) { | |
180 | pr_warning("CAIF: %s(): Out of memory\n", __func__); | |
181 | return; | |
182 | } | |
183 | caif_assert(offsetof(struct cfctrl, serv.layer) == 0); | |
184 | init_info(cfpkt_info(pkt), cfctrl); | |
185 | cfpkt_info(pkt)->dev_info->id = physlinkid; | |
186 | cfctrl->serv.dev_info.id = physlinkid; | |
187 | cfpkt_addbdy(pkt, CFCTRL_CMD_ENUM); | |
188 | cfpkt_addbdy(pkt, physlinkid); | |
189 | ret = | |
190 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); | |
191 | if (ret < 0) { | |
192 | pr_err("CAIF: %s(): Could not transmit enum message\n", | |
193 | __func__); | |
194 | cfpkt_destroy(pkt); | |
195 | } | |
196 | } | |
197 | ||
8d545c8f | 198 | int cfctrl_linkup_request(struct cflayer *layer, |
b482cd20 SB |
199 | struct cfctrl_link_param *param, |
200 | struct cflayer *user_layer) | |
201 | { | |
202 | struct cfctrl *cfctrl = container_obj(layer); | |
203 | u32 tmp32; | |
204 | u16 tmp16; | |
205 | u8 tmp8; | |
206 | struct cfctrl_request_info *req; | |
207 | int ret; | |
208 | char utility_name[16]; | |
209 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); | |
210 | if (!pkt) { | |
211 | pr_warning("CAIF: %s(): Out of memory\n", __func__); | |
8d545c8f | 212 | return -ENOMEM; |
b482cd20 SB |
213 | } |
214 | cfpkt_addbdy(pkt, CFCTRL_CMD_LINK_SETUP); | |
215 | cfpkt_addbdy(pkt, (param->chtype << 4) + param->linktype); | |
216 | cfpkt_addbdy(pkt, (param->priority << 3) + param->phyid); | |
217 | cfpkt_addbdy(pkt, param->endpoint & 0x03); | |
218 | ||
219 | switch (param->linktype) { | |
220 | case CFCTRL_SRV_VEI: | |
221 | break; | |
222 | case CFCTRL_SRV_VIDEO: | |
223 | cfpkt_addbdy(pkt, (u8) param->u.video.connid); | |
224 | break; | |
225 | case CFCTRL_SRV_DBG: | |
226 | break; | |
227 | case CFCTRL_SRV_DATAGRAM: | |
228 | tmp32 = cpu_to_le32(param->u.datagram.connid); | |
229 | cfpkt_add_body(pkt, &tmp32, 4); | |
230 | break; | |
231 | case CFCTRL_SRV_RFM: | |
232 | /* Construct a frame, convert DatagramConnectionID to network | |
233 | * format long and copy it out... | |
234 | */ | |
235 | tmp32 = cpu_to_le32(param->u.rfm.connid); | |
236 | cfpkt_add_body(pkt, &tmp32, 4); | |
237 | /* Add volume name, including zero termination... */ | |
238 | cfpkt_add_body(pkt, param->u.rfm.volume, | |
239 | strlen(param->u.rfm.volume) + 1); | |
240 | break; | |
241 | case CFCTRL_SRV_UTIL: | |
242 | tmp16 = cpu_to_le16(param->u.utility.fifosize_kb); | |
243 | cfpkt_add_body(pkt, &tmp16, 2); | |
244 | tmp16 = cpu_to_le16(param->u.utility.fifosize_bufs); | |
245 | cfpkt_add_body(pkt, &tmp16, 2); | |
246 | memset(utility_name, 0, sizeof(utility_name)); | |
247 | strncpy(utility_name, param->u.utility.name, | |
248 | UTILITY_NAME_LENGTH - 1); | |
249 | cfpkt_add_body(pkt, utility_name, UTILITY_NAME_LENGTH); | |
250 | tmp8 = param->u.utility.paramlen; | |
251 | cfpkt_add_body(pkt, &tmp8, 1); | |
252 | cfpkt_add_body(pkt, param->u.utility.params, | |
253 | param->u.utility.paramlen); | |
254 | break; | |
255 | default: | |
256 | pr_warning("CAIF: %s():Request setup of bad link type = %d\n", | |
257 | __func__, param->linktype); | |
8d545c8f | 258 | return -EINVAL; |
b482cd20 | 259 | } |
49afa55b | 260 | req = kzalloc(sizeof(*req), GFP_KERNEL); |
b482cd20 SB |
261 | if (!req) { |
262 | pr_warning("CAIF: %s(): Out of memory\n", __func__); | |
8d545c8f | 263 | return -ENOMEM; |
b482cd20 | 264 | } |
b482cd20 SB |
265 | req->client_layer = user_layer; |
266 | req->cmd = CFCTRL_CMD_LINK_SETUP; | |
267 | req->param = *param; | |
268 | cfctrl_insert_req(cfctrl, req); | |
269 | init_info(cfpkt_info(pkt), cfctrl); | |
8d545c8f SB |
270 | /* |
271 | * NOTE:Always send linkup and linkdown request on the same | |
272 | * device as the payload. Otherwise old queued up payload | |
273 | * might arrive with the newly allocated channel ID. | |
274 | */ | |
b482cd20 SB |
275 | cfpkt_info(pkt)->dev_info->id = param->phyid; |
276 | ret = | |
277 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); | |
278 | if (ret < 0) { | |
279 | pr_err("CAIF: %s(): Could not transmit linksetup request\n", | |
280 | __func__); | |
281 | cfpkt_destroy(pkt); | |
8d545c8f | 282 | return -ENODEV; |
b482cd20 | 283 | } |
8d545c8f | 284 | return 0; |
b482cd20 SB |
285 | } |
286 | ||
287 | int cfctrl_linkdown_req(struct cflayer *layer, u8 channelid, | |
288 | struct cflayer *client) | |
289 | { | |
290 | int ret; | |
291 | struct cfctrl *cfctrl = container_obj(layer); | |
292 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); | |
293 | if (!pkt) { | |
294 | pr_warning("CAIF: %s(): Out of memory\n", __func__); | |
295 | return -ENOMEM; | |
296 | } | |
b482cd20 SB |
297 | cfpkt_addbdy(pkt, CFCTRL_CMD_LINK_DESTROY); |
298 | cfpkt_addbdy(pkt, channelid); | |
299 | init_info(cfpkt_info(pkt), cfctrl); | |
300 | ret = | |
301 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); | |
302 | if (ret < 0) { | |
303 | pr_err("CAIF: %s(): Could not transmit link-down request\n", | |
304 | __func__); | |
305 | cfpkt_destroy(pkt); | |
306 | } | |
307 | return ret; | |
308 | } | |
309 | ||
310 | void cfctrl_sleep_req(struct cflayer *layer) | |
311 | { | |
312 | int ret; | |
313 | struct cfctrl *cfctrl = container_obj(layer); | |
314 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); | |
315 | if (!pkt) { | |
316 | pr_warning("CAIF: %s(): Out of memory\n", __func__); | |
317 | return; | |
318 | } | |
319 | cfpkt_addbdy(pkt, CFCTRL_CMD_SLEEP); | |
320 | init_info(cfpkt_info(pkt), cfctrl); | |
321 | ret = | |
322 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); | |
323 | if (ret < 0) | |
324 | cfpkt_destroy(pkt); | |
325 | } | |
326 | ||
327 | void cfctrl_wake_req(struct cflayer *layer) | |
328 | { | |
329 | int ret; | |
330 | struct cfctrl *cfctrl = container_obj(layer); | |
331 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); | |
332 | if (!pkt) { | |
333 | pr_warning("CAIF: %s(): Out of memory\n", __func__); | |
334 | return; | |
335 | } | |
336 | cfpkt_addbdy(pkt, CFCTRL_CMD_WAKE); | |
337 | init_info(cfpkt_info(pkt), cfctrl); | |
338 | ret = | |
339 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); | |
340 | if (ret < 0) | |
341 | cfpkt_destroy(pkt); | |
342 | } | |
343 | ||
344 | void cfctrl_getstartreason_req(struct cflayer *layer) | |
345 | { | |
346 | int ret; | |
347 | struct cfctrl *cfctrl = container_obj(layer); | |
348 | struct cfpkt *pkt = cfpkt_create(CFPKT_CTRL_PKT_LEN); | |
349 | if (!pkt) { | |
350 | pr_warning("CAIF: %s(): Out of memory\n", __func__); | |
351 | return; | |
352 | } | |
353 | cfpkt_addbdy(pkt, CFCTRL_CMD_START_REASON); | |
354 | init_info(cfpkt_info(pkt), cfctrl); | |
355 | ret = | |
356 | cfctrl->serv.layer.dn->transmit(cfctrl->serv.layer.dn, pkt); | |
357 | if (ret < 0) | |
358 | cfpkt_destroy(pkt); | |
359 | } | |
360 | ||
361 | ||
8d545c8f SB |
362 | void cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer) |
363 | { | |
7aecf494 | 364 | struct cfctrl_request_info *p, *tmp; |
8d545c8f SB |
365 | struct cfctrl *ctrl = container_obj(layr); |
366 | spin_lock(&ctrl->info_list_lock); | |
7aecf494 SB |
367 | pr_warning("CAIF: %s(): enter\n", __func__); |
368 | ||
369 | list_for_each_entry_safe(p, tmp, &ctrl->list, list) { | |
370 | if (p->client_layer == adap_layer) { | |
371 | pr_warning("CAIF: %s(): cancel req :%d\n", __func__, | |
372 | p->sequence_no); | |
373 | list_del(&p->list); | |
374 | kfree(p); | |
8d545c8f | 375 | } |
8d545c8f SB |
376 | } |
377 | ||
378 | spin_unlock(&ctrl->info_list_lock); | |
379 | } | |
380 | ||
b482cd20 SB |
381 | static int cfctrl_recv(struct cflayer *layer, struct cfpkt *pkt) |
382 | { | |
383 | u8 cmdrsp; | |
384 | u8 cmd; | |
385 | int ret = -1; | |
386 | u16 tmp16; | |
387 | u8 len; | |
388 | u8 param[255]; | |
389 | u8 linkid; | |
390 | struct cfctrl *cfctrl = container_obj(layer); | |
391 | struct cfctrl_request_info rsp, *req; | |
392 | ||
393 | ||
394 | cfpkt_extr_head(pkt, &cmdrsp, 1); | |
395 | cmd = cmdrsp & CFCTRL_CMD_MASK; | |
396 | if (cmd != CFCTRL_CMD_LINK_ERR | |
397 | && CFCTRL_RSP_BIT != (CFCTRL_RSP_BIT & cmdrsp)) { | |
2aa40aef | 398 | if (handle_loop(cfctrl, cmd, pkt) != 0) |
8d545c8f | 399 | cmdrsp |= CFCTRL_ERR_BIT; |
b482cd20 SB |
400 | } |
401 | ||
402 | switch (cmd) { | |
403 | case CFCTRL_CMD_LINK_SETUP: | |
404 | { | |
405 | enum cfctrl_srv serv; | |
406 | enum cfctrl_srv servtype; | |
407 | u8 endpoint; | |
408 | u8 physlinkid; | |
409 | u8 prio; | |
410 | u8 tmp; | |
411 | u32 tmp32; | |
412 | u8 *cp; | |
413 | int i; | |
414 | struct cfctrl_link_param linkparam; | |
415 | memset(&linkparam, 0, sizeof(linkparam)); | |
416 | ||
417 | cfpkt_extr_head(pkt, &tmp, 1); | |
418 | ||
419 | serv = tmp & CFCTRL_SRV_MASK; | |
420 | linkparam.linktype = serv; | |
421 | ||
422 | servtype = tmp >> 4; | |
423 | linkparam.chtype = servtype; | |
424 | ||
425 | cfpkt_extr_head(pkt, &tmp, 1); | |
426 | physlinkid = tmp & 0x07; | |
427 | prio = tmp >> 3; | |
428 | ||
429 | linkparam.priority = prio; | |
430 | linkparam.phyid = physlinkid; | |
431 | cfpkt_extr_head(pkt, &endpoint, 1); | |
432 | linkparam.endpoint = endpoint & 0x03; | |
433 | ||
434 | switch (serv) { | |
435 | case CFCTRL_SRV_VEI: | |
436 | case CFCTRL_SRV_DBG: | |
8d545c8f SB |
437 | if (CFCTRL_ERR_BIT & cmdrsp) |
438 | break; | |
b482cd20 SB |
439 | /* Link ID */ |
440 | cfpkt_extr_head(pkt, &linkid, 1); | |
441 | break; | |
442 | case CFCTRL_SRV_VIDEO: | |
443 | cfpkt_extr_head(pkt, &tmp, 1); | |
444 | linkparam.u.video.connid = tmp; | |
8d545c8f SB |
445 | if (CFCTRL_ERR_BIT & cmdrsp) |
446 | break; | |
b482cd20 SB |
447 | /* Link ID */ |
448 | cfpkt_extr_head(pkt, &linkid, 1); | |
449 | break; | |
450 | ||
451 | case CFCTRL_SRV_DATAGRAM: | |
452 | cfpkt_extr_head(pkt, &tmp32, 4); | |
453 | linkparam.u.datagram.connid = | |
454 | le32_to_cpu(tmp32); | |
8d545c8f SB |
455 | if (CFCTRL_ERR_BIT & cmdrsp) |
456 | break; | |
b482cd20 SB |
457 | /* Link ID */ |
458 | cfpkt_extr_head(pkt, &linkid, 1); | |
459 | break; | |
460 | case CFCTRL_SRV_RFM: | |
461 | /* Construct a frame, convert | |
462 | * DatagramConnectionID | |
463 | * to network format long and copy it out... | |
464 | */ | |
465 | cfpkt_extr_head(pkt, &tmp32, 4); | |
466 | linkparam.u.rfm.connid = | |
467 | le32_to_cpu(tmp32); | |
468 | cp = (u8 *) linkparam.u.rfm.volume; | |
469 | for (cfpkt_extr_head(pkt, &tmp, 1); | |
470 | cfpkt_more(pkt) && tmp != '\0'; | |
471 | cfpkt_extr_head(pkt, &tmp, 1)) | |
472 | *cp++ = tmp; | |
473 | *cp = '\0'; | |
474 | ||
8d545c8f SB |
475 | if (CFCTRL_ERR_BIT & cmdrsp) |
476 | break; | |
b482cd20 SB |
477 | /* Link ID */ |
478 | cfpkt_extr_head(pkt, &linkid, 1); | |
479 | ||
480 | break; | |
481 | case CFCTRL_SRV_UTIL: | |
482 | /* Construct a frame, convert | |
483 | * DatagramConnectionID | |
484 | * to network format long and copy it out... | |
485 | */ | |
486 | /* Fifosize KB */ | |
487 | cfpkt_extr_head(pkt, &tmp16, 2); | |
488 | linkparam.u.utility.fifosize_kb = | |
489 | le16_to_cpu(tmp16); | |
490 | /* Fifosize bufs */ | |
491 | cfpkt_extr_head(pkt, &tmp16, 2); | |
492 | linkparam.u.utility.fifosize_bufs = | |
493 | le16_to_cpu(tmp16); | |
494 | /* name */ | |
495 | cp = (u8 *) linkparam.u.utility.name; | |
496 | caif_assert(sizeof(linkparam.u.utility.name) | |
497 | >= UTILITY_NAME_LENGTH); | |
498 | for (i = 0; | |
499 | i < UTILITY_NAME_LENGTH | |
500 | && cfpkt_more(pkt); i++) { | |
501 | cfpkt_extr_head(pkt, &tmp, 1); | |
502 | *cp++ = tmp; | |
503 | } | |
504 | /* Length */ | |
505 | cfpkt_extr_head(pkt, &len, 1); | |
506 | linkparam.u.utility.paramlen = len; | |
507 | /* Param Data */ | |
508 | cp = linkparam.u.utility.params; | |
509 | while (cfpkt_more(pkt) && len--) { | |
510 | cfpkt_extr_head(pkt, &tmp, 1); | |
511 | *cp++ = tmp; | |
512 | } | |
8d545c8f SB |
513 | if (CFCTRL_ERR_BIT & cmdrsp) |
514 | break; | |
b482cd20 SB |
515 | /* Link ID */ |
516 | cfpkt_extr_head(pkt, &linkid, 1); | |
517 | /* Length */ | |
518 | cfpkt_extr_head(pkt, &len, 1); | |
519 | /* Param Data */ | |
520 | cfpkt_extr_head(pkt, ¶m, len); | |
521 | break; | |
522 | default: | |
523 | pr_warning("CAIF: %s(): Request setup " | |
524 | "- invalid link type (%d)", | |
525 | __func__, serv); | |
526 | goto error; | |
527 | } | |
528 | ||
529 | rsp.cmd = cmd; | |
530 | rsp.param = linkparam; | |
531 | req = cfctrl_remove_req(cfctrl, &rsp); | |
532 | ||
533 | if (CFCTRL_ERR_BIT == (CFCTRL_ERR_BIT & cmdrsp) || | |
534 | cfpkt_erroneous(pkt)) { | |
535 | pr_err("CAIF: %s(): Invalid O/E bit or parse " | |
536 | "error on CAIF control channel", | |
537 | __func__); | |
538 | cfctrl->res.reject_rsp(cfctrl->serv.layer.up, | |
539 | 0, | |
540 | req ? req->client_layer | |
541 | : NULL); | |
542 | } else { | |
543 | cfctrl->res.linksetup_rsp(cfctrl->serv. | |
544 | layer.up, linkid, | |
545 | serv, physlinkid, | |
546 | req ? req-> | |
547 | client_layer : NULL); | |
548 | } | |
549 | ||
550 | if (req != NULL) | |
551 | kfree(req); | |
552 | } | |
553 | break; | |
554 | case CFCTRL_CMD_LINK_DESTROY: | |
555 | cfpkt_extr_head(pkt, &linkid, 1); | |
8d545c8f | 556 | cfctrl->res.linkdestroy_rsp(cfctrl->serv.layer.up, linkid); |
b482cd20 SB |
557 | break; |
558 | case CFCTRL_CMD_LINK_ERR: | |
559 | pr_err("CAIF: %s(): Frame Error Indication received\n", | |
560 | __func__); | |
561 | cfctrl->res.linkerror_ind(); | |
562 | break; | |
563 | case CFCTRL_CMD_ENUM: | |
564 | cfctrl->res.enum_rsp(); | |
565 | break; | |
566 | case CFCTRL_CMD_SLEEP: | |
567 | cfctrl->res.sleep_rsp(); | |
568 | break; | |
569 | case CFCTRL_CMD_WAKE: | |
570 | cfctrl->res.wake_rsp(); | |
571 | break; | |
572 | case CFCTRL_CMD_LINK_RECONF: | |
573 | cfctrl->res.restart_rsp(); | |
574 | break; | |
575 | case CFCTRL_CMD_RADIO_SET: | |
576 | cfctrl->res.radioset_rsp(); | |
577 | break; | |
578 | default: | |
579 | pr_err("CAIF: %s(): Unrecognized Control Frame\n", __func__); | |
580 | goto error; | |
581 | break; | |
582 | } | |
583 | ret = 0; | |
584 | error: | |
585 | cfpkt_destroy(pkt); | |
586 | return ret; | |
587 | } | |
588 | ||
589 | static void cfctrl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl, | |
590 | int phyid) | |
591 | { | |
592 | struct cfctrl *this = container_obj(layr); | |
593 | switch (ctrl) { | |
594 | case _CAIF_CTRLCMD_PHYIF_FLOW_OFF_IND: | |
595 | case CAIF_CTRLCMD_FLOW_OFF_IND: | |
596 | spin_lock(&this->info_list_lock); | |
7aecf494 | 597 | if (!list_empty(&this->list)) { |
8d545c8f | 598 | pr_debug("CAIF: %s(): Received flow off in " |
b482cd20 SB |
599 | "control layer", __func__); |
600 | } | |
601 | spin_unlock(&this->info_list_lock); | |
602 | break; | |
603 | default: | |
604 | break; | |
605 | } | |
606 | } | |
607 | ||
608 | #ifndef CAIF_NO_LOOP | |
609 | static int handle_loop(struct cfctrl *ctrl, int cmd, struct cfpkt *pkt) | |
610 | { | |
611 | static int last_linkid; | |
612 | u8 linkid, linktype, tmp; | |
613 | switch (cmd) { | |
614 | case CFCTRL_CMD_LINK_SETUP: | |
615 | spin_lock(&ctrl->loop_linkid_lock); | |
616 | for (linkid = last_linkid + 1; linkid < 255; linkid++) | |
617 | if (!ctrl->loop_linkused[linkid]) | |
618 | goto found; | |
619 | for (linkid = last_linkid - 1; linkid > 0; linkid--) | |
620 | if (!ctrl->loop_linkused[linkid]) | |
621 | goto found; | |
622 | spin_unlock(&ctrl->loop_linkid_lock); | |
8d545c8f | 623 | pr_err("CAIF: %s(): Out of link-ids\n", __func__); |
b482cd20 SB |
624 | return -EINVAL; |
625 | found: | |
626 | if (!ctrl->loop_linkused[linkid]) | |
627 | ctrl->loop_linkused[linkid] = 1; | |
628 | ||
629 | last_linkid = linkid; | |
630 | ||
631 | cfpkt_add_trail(pkt, &linkid, 1); | |
632 | spin_unlock(&ctrl->loop_linkid_lock); | |
633 | cfpkt_peek_head(pkt, &linktype, 1); | |
634 | if (linktype == CFCTRL_SRV_UTIL) { | |
635 | tmp = 0x01; | |
636 | cfpkt_add_trail(pkt, &tmp, 1); | |
637 | cfpkt_add_trail(pkt, &tmp, 1); | |
638 | } | |
639 | break; | |
640 | ||
641 | case CFCTRL_CMD_LINK_DESTROY: | |
642 | spin_lock(&ctrl->loop_linkid_lock); | |
643 | cfpkt_peek_head(pkt, &linkid, 1); | |
644 | ctrl->loop_linkused[linkid] = 0; | |
645 | spin_unlock(&ctrl->loop_linkid_lock); | |
646 | break; | |
647 | default: | |
648 | break; | |
649 | } | |
2aa40aef | 650 | return 0; |
b482cd20 SB |
651 | } |
652 | #endif |