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247e9cff SA |
1 | /* |
2 | * Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved. | |
3 | * | |
4 | * This software is licensed under the terms of the GNU General Public | |
5 | * License version 2, as published by the Free Software Foundation, and | |
6 | * may be copied, distributed, and modified under those terms. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | */ | |
13 | ||
247e9cff SA |
14 | #include <linux/etherdevice.h> |
15 | #include <asm/byteorder.h> | |
16 | #include <linux/ip.h> | |
17 | #include <linux/ipv6.h> | |
18 | #include <linux/udp.h> | |
19 | #include <linux/in.h> | |
20 | ||
21 | #include "gdm_wimax.h" | |
22 | #include "hci.h" | |
23 | #include "wm_ioctl.h" | |
24 | #include "netlink_k.h" | |
25 | ||
26 | #define gdm_wimax_send(n, d, l) \ | |
27 | (n->phy_dev->send_func)(n->phy_dev->priv_dev, d, l, NULL, NULL) | |
28 | #define gdm_wimax_send_with_cb(n, d, l, c, b) \ | |
29 | (n->phy_dev->send_func)(n->phy_dev->priv_dev, d, l, c, b) | |
30 | #define gdm_wimax_rcv_with_cb(n, c, b) \ | |
31 | (n->phy_dev->rcv_func)(n->phy_dev->priv_dev, c, b) | |
32 | ||
33 | #define EVT_MAX_SIZE 2048 | |
34 | ||
35 | struct evt_entry { | |
36 | struct list_head list; | |
37 | struct net_device *dev; | |
38 | char evt_data[EVT_MAX_SIZE]; | |
39 | int size; | |
40 | }; | |
41 | ||
42 | static void __gdm_wimax_event_send(struct work_struct *work); | |
43 | static inline struct evt_entry *alloc_event_entry(void); | |
44 | static inline void free_event_entry(struct evt_entry *e); | |
45 | static struct evt_entry *get_event_entry(void); | |
46 | static void put_event_entry(struct evt_entry *e); | |
47 | ||
48 | static struct { | |
49 | int ref_cnt; | |
50 | struct sock *sock; | |
51 | struct list_head evtq; | |
52 | spinlock_t evt_lock; | |
53 | ||
54 | struct list_head freeq; | |
55 | struct work_struct ws; | |
56 | } wm_event; | |
57 | ||
58 | static u8 gdm_wimax_macaddr[6] = {0x00, 0x0a, 0x3b, 0xf0, 0x01, 0x30}; | |
59 | ||
60 | static void gdm_wimax_ind_fsm_update(struct net_device *dev, struct fsm_s *fsm); | |
61 | static void gdm_wimax_ind_if_updown(struct net_device *dev, int if_up); | |
62 | ||
63 | #if defined(DEBUG_SDU) | |
64 | static void printk_hex(u8 *buf, u32 size) | |
65 | { | |
66 | int i; | |
67 | ||
68 | for (i = 0; i < size; i++) { | |
69 | if (i && i % 16 == 0) | |
70 | printk(KERN_DEBUG "\n%02x ", *buf++); | |
71 | else | |
72 | printk(KERN_DEBUG "%02x ", *buf++); | |
73 | } | |
74 | ||
75 | printk(KERN_DEBUG "\n"); | |
76 | } | |
77 | ||
78 | static const char *get_protocol_name(u16 protocol) | |
79 | { | |
80 | static char buf[32]; | |
81 | const char *name = "-"; | |
82 | ||
83 | switch (protocol) { | |
84 | case ETH_P_ARP: | |
85 | name = "ARP"; | |
86 | break; | |
87 | case ETH_P_IP: | |
88 | name = "IP"; | |
89 | break; | |
90 | case ETH_P_IPV6: | |
91 | name = "IPv6"; | |
92 | break; | |
93 | } | |
94 | ||
95 | sprintf(buf, "0x%04x(%s)", protocol, name); | |
96 | return buf; | |
97 | } | |
98 | ||
99 | static const char *get_ip_protocol_name(u8 ip_protocol) | |
100 | { | |
101 | static char buf[32]; | |
102 | const char *name = "-"; | |
103 | ||
104 | switch (ip_protocol) { | |
105 | case IPPROTO_TCP: | |
106 | name = "TCP"; | |
107 | break; | |
108 | case IPPROTO_UDP: | |
109 | name = "UDP"; | |
110 | break; | |
111 | case IPPROTO_ICMP: | |
112 | name = "ICMP"; | |
113 | break; | |
114 | } | |
115 | ||
116 | sprintf(buf, "%u(%s)", ip_protocol, name); | |
117 | return buf; | |
118 | } | |
119 | ||
120 | static const char *get_port_name(u16 port) | |
121 | { | |
122 | static char buf[32]; | |
123 | const char *name = "-"; | |
124 | ||
125 | switch (port) { | |
126 | case 67: | |
127 | name = "DHCP-Server"; | |
128 | break; | |
129 | case 68: | |
130 | name = "DHCP-Client"; | |
131 | break; | |
132 | case 69: | |
133 | name = "TFTP"; | |
134 | break; | |
135 | } | |
136 | ||
137 | sprintf(buf, "%u(%s)", port, name); | |
138 | return buf; | |
139 | } | |
140 | ||
141 | static void dump_eth_packet(const char *title, u8 *data, int len) | |
142 | { | |
143 | struct iphdr *ih = NULL; | |
144 | struct udphdr *uh = NULL; | |
145 | u16 protocol = 0; | |
146 | u8 ip_protocol = 0; | |
147 | u16 port = 0; | |
148 | ||
149 | protocol = (data[12]<<8) | data[13]; | |
150 | ih = (struct iphdr *) (data+ETH_HLEN); | |
151 | ||
152 | if (protocol == ETH_P_IP) { | |
153 | uh = (struct udphdr *) ((char *)ih + sizeof(struct iphdr)); | |
154 | ip_protocol = ih->protocol; | |
155 | port = ntohs(uh->dest); | |
156 | } else if (protocol == ETH_P_IPV6) { | |
157 | struct ipv6hdr *i6h = (struct ipv6hdr *) data; | |
158 | uh = (struct udphdr *) ((char *)i6h + sizeof(struct ipv6hdr)); | |
159 | ip_protocol = i6h->nexthdr; | |
160 | port = ntohs(uh->dest); | |
161 | } | |
162 | ||
163 | printk(KERN_DEBUG "[%s] len=%d, %s, %s, %s\n", | |
164 | title, len, | |
165 | get_protocol_name(protocol), | |
166 | get_ip_protocol_name(ip_protocol), | |
167 | get_port_name(port)); | |
168 | ||
169 | #if 1 | |
170 | if (!(data[0] == 0xff && data[1] == 0xff)) { | |
171 | if (protocol == ETH_P_IP) { | |
172 | printk(KERN_DEBUG " src=%u.%u.%u.%u\n", | |
173 | NIPQUAD(ih->saddr)); | |
174 | } else if (protocol == ETH_P_IPV6) { | |
175 | #ifdef NIP6 | |
176 | printk(KERN_DEBUG " src=%x:%x:%x:%x:%x:%x:%x:%x\n", | |
177 | NIP6(ih->saddr)); | |
178 | #else | |
179 | printk(KERN_DEBUG " src=%pI6\n", &ih->saddr); | |
180 | #endif | |
181 | } | |
182 | } | |
183 | #endif | |
184 | ||
185 | #if (DUMP_PACKET & DUMP_SDU_ALL) | |
186 | printk_hex(data, len); | |
187 | #else | |
188 | #if (DUMP_PACKET & DUMP_SDU_ARP) | |
189 | if (protocol == ETH_P_ARP) | |
190 | printk_hex(data, len); | |
191 | #endif | |
192 | #if (DUMP_PACKET & DUMP_SDU_IP) | |
193 | if (protocol == ETH_P_IP || protocol == ETH_P_IPV6) | |
194 | printk_hex(data, len); | |
195 | #else | |
196 | #if (DUMP_PACKET & DUMP_SDU_IP_TCP) | |
197 | if (ip_protocol == IPPROTO_TCP) | |
198 | printk_hex(data, len); | |
199 | #endif | |
200 | #if (DUMP_PACKET & DUMP_SDU_IP_UDP) | |
201 | if (ip_protocol == IPPROTO_UDP) | |
202 | printk_hex(data, len); | |
203 | #endif | |
204 | #if (DUMP_PACKET & DUMP_SDU_IP_ICMP) | |
205 | if (ip_protocol == IPPROTO_ICMP) | |
206 | printk_hex(data, len); | |
207 | #endif | |
208 | #endif | |
209 | #endif | |
210 | } | |
211 | #endif | |
212 | ||
213 | ||
214 | static inline int gdm_wimax_header(struct sk_buff **pskb) | |
215 | { | |
216 | u16 buf[HCI_HEADER_SIZE / sizeof(u16)]; | |
217 | struct sk_buff *skb = *pskb; | |
218 | int ret = 0; | |
219 | ||
220 | if (unlikely(skb_headroom(skb) < HCI_HEADER_SIZE)) { | |
221 | struct sk_buff *skb2; | |
222 | ||
223 | skb2 = skb_realloc_headroom(skb, HCI_HEADER_SIZE); | |
224 | if (skb2 == NULL) | |
225 | return -ENOMEM; | |
226 | if (skb->sk) | |
227 | skb_set_owner_w(skb2, skb->sk); | |
228 | kfree_skb(skb); | |
229 | skb = skb2; | |
230 | } | |
231 | ||
232 | skb_push(skb, HCI_HEADER_SIZE); | |
233 | buf[0] = H2B(WIMAX_TX_SDU); | |
234 | buf[1] = H2B(skb->len - HCI_HEADER_SIZE); | |
235 | memcpy(skb->data, buf, HCI_HEADER_SIZE); | |
236 | ||
237 | *pskb = skb; | |
238 | return ret; | |
239 | } | |
240 | ||
241 | static void gdm_wimax_event_rcv(struct net_device *dev, u16 type, void *msg, | |
242 | int len) | |
243 | { | |
244 | struct nic *nic = netdev_priv(dev); | |
245 | ||
246 | #if defined(DEBUG_HCI) | |
247 | u8 *buf = (u8 *) msg; | |
248 | u16 hci_cmd = (buf[0]<<8) | buf[1]; | |
249 | u16 hci_len = (buf[2]<<8) | buf[3]; | |
250 | printk(KERN_DEBUG "H=>D: 0x%04x(%d)\n", hci_cmd, hci_len); | |
251 | #endif | |
252 | ||
253 | gdm_wimax_send(nic, msg, len); | |
254 | } | |
255 | ||
256 | static int gdm_wimax_event_init(void) | |
257 | { | |
258 | if (wm_event.ref_cnt == 0) { | |
259 | wm_event.sock = netlink_init(NETLINK_WIMAX, | |
260 | gdm_wimax_event_rcv); | |
261 | INIT_LIST_HEAD(&wm_event.evtq); | |
262 | INIT_LIST_HEAD(&wm_event.freeq); | |
263 | INIT_WORK(&wm_event.ws, __gdm_wimax_event_send); | |
264 | spin_lock_init(&wm_event.evt_lock); | |
265 | } | |
266 | ||
267 | if (wm_event.sock) { | |
268 | wm_event.ref_cnt++; | |
269 | return 0; | |
270 | } | |
271 | ||
272 | printk(KERN_ERR "Creating WiMax Event netlink is failed\n"); | |
273 | return -1; | |
274 | } | |
275 | ||
276 | static void gdm_wimax_event_exit(void) | |
277 | { | |
278 | if (wm_event.sock && --wm_event.ref_cnt == 0) { | |
279 | struct evt_entry *e, *temp; | |
280 | unsigned long flags; | |
281 | ||
282 | spin_lock_irqsave(&wm_event.evt_lock, flags); | |
283 | ||
284 | list_for_each_entry_safe(e, temp, &wm_event.evtq, list) { | |
285 | list_del(&e->list); | |
286 | free_event_entry(e); | |
287 | } | |
288 | list_for_each_entry_safe(e, temp, &wm_event.freeq, list) { | |
289 | list_del(&e->list); | |
290 | free_event_entry(e); | |
291 | } | |
292 | ||
293 | spin_unlock_irqrestore(&wm_event.evt_lock, flags); | |
294 | netlink_exit(wm_event.sock); | |
295 | wm_event.sock = NULL; | |
296 | } | |
297 | } | |
298 | ||
299 | static inline struct evt_entry *alloc_event_entry(void) | |
300 | { | |
301 | return kmalloc(sizeof(struct evt_entry), GFP_ATOMIC); | |
302 | } | |
303 | ||
304 | static inline void free_event_entry(struct evt_entry *e) | |
305 | { | |
306 | kfree(e); | |
307 | } | |
308 | ||
309 | static struct evt_entry *get_event_entry(void) | |
310 | { | |
311 | struct evt_entry *e; | |
312 | ||
313 | if (list_empty(&wm_event.freeq)) | |
314 | e = alloc_event_entry(); | |
315 | else { | |
316 | e = list_entry(wm_event.freeq.next, struct evt_entry, list); | |
317 | list_del(&e->list); | |
318 | } | |
319 | ||
320 | return e; | |
321 | } | |
322 | ||
323 | static void put_event_entry(struct evt_entry *e) | |
324 | { | |
325 | BUG_ON(!e); | |
326 | ||
327 | list_add_tail(&e->list, &wm_event.freeq); | |
328 | } | |
329 | ||
330 | static void __gdm_wimax_event_send(struct work_struct *work) | |
331 | { | |
332 | int idx; | |
333 | unsigned long flags; | |
334 | struct evt_entry *e; | |
335 | ||
336 | spin_lock_irqsave(&wm_event.evt_lock, flags); | |
337 | ||
338 | while (!list_empty(&wm_event.evtq)) { | |
339 | e = list_entry(wm_event.evtq.next, struct evt_entry, list); | |
340 | spin_unlock_irqrestore(&wm_event.evt_lock, flags); | |
341 | ||
342 | sscanf(e->dev->name, "wm%d", &idx); | |
343 | netlink_send(wm_event.sock, idx, 0, e->evt_data, e->size); | |
344 | ||
345 | spin_lock_irqsave(&wm_event.evt_lock, flags); | |
346 | list_del(&e->list); | |
347 | put_event_entry(e); | |
348 | } | |
349 | ||
350 | spin_unlock_irqrestore(&wm_event.evt_lock, flags); | |
351 | } | |
352 | ||
353 | static int gdm_wimax_event_send(struct net_device *dev, char *buf, int size) | |
354 | { | |
355 | struct evt_entry *e; | |
356 | unsigned long flags; | |
357 | ||
358 | #if defined(DEBUG_HCI) | |
359 | u16 hci_cmd = ((u8)buf[0]<<8) | (u8)buf[1]; | |
360 | u16 hci_len = ((u8)buf[2]<<8) | (u8)buf[3]; | |
361 | printk(KERN_DEBUG "D=>H: 0x%04x(%d)\n", hci_cmd, hci_len); | |
362 | #endif | |
363 | ||
364 | spin_lock_irqsave(&wm_event.evt_lock, flags); | |
365 | ||
366 | e = get_event_entry(); | |
367 | if (!e) { | |
368 | printk(KERN_ERR "%s: No memory for event\n", __func__); | |
369 | spin_unlock_irqrestore(&wm_event.evt_lock, flags); | |
370 | return -ENOMEM; | |
371 | } | |
372 | ||
373 | e->dev = dev; | |
374 | e->size = size; | |
375 | memcpy(e->evt_data, buf, size); | |
376 | ||
377 | list_add_tail(&e->list, &wm_event.evtq); | |
378 | spin_unlock_irqrestore(&wm_event.evt_lock, flags); | |
379 | ||
380 | schedule_work(&wm_event.ws); | |
381 | ||
382 | return 0; | |
383 | } | |
384 | ||
385 | static void tx_complete(void *arg) | |
386 | { | |
387 | struct nic *nic = arg; | |
388 | ||
389 | if (netif_queue_stopped(nic->netdev)) | |
390 | netif_wake_queue(nic->netdev); | |
391 | } | |
392 | ||
393 | int gdm_wimax_send_tx(struct sk_buff *skb, struct net_device *dev) | |
394 | { | |
395 | int ret = 0; | |
396 | struct nic *nic = netdev_priv(dev); | |
397 | ||
398 | ret = gdm_wimax_send_with_cb(nic, skb->data, skb->len, tx_complete, | |
399 | nic); | |
400 | if (ret == -ENOSPC) { | |
401 | netif_stop_queue(dev); | |
402 | ret = 0; | |
403 | } | |
404 | ||
405 | if (ret) { | |
406 | skb_pull(skb, HCI_HEADER_SIZE); | |
407 | return ret; | |
408 | } | |
409 | ||
410 | nic->stats.tx_packets++; | |
411 | nic->stats.tx_bytes += skb->len - HCI_HEADER_SIZE; | |
412 | kfree_skb(skb); | |
413 | return ret; | |
414 | } | |
415 | ||
416 | static int gdm_wimax_tx(struct sk_buff *skb, struct net_device *dev) | |
417 | { | |
418 | int ret = 0; | |
419 | struct nic *nic = netdev_priv(dev); | |
420 | struct fsm_s *fsm = (struct fsm_s *) nic->sdk_data[SIOC_DATA_FSM].buf; | |
421 | ||
422 | #if defined(DEBUG_SDU) | |
423 | dump_eth_packet("TX", skb->data, skb->len); | |
424 | #endif | |
425 | ||
426 | ret = gdm_wimax_header(&skb); | |
427 | if (ret < 0) { | |
428 | skb_pull(skb, HCI_HEADER_SIZE); | |
429 | return ret; | |
430 | } | |
431 | ||
432 | #if !defined(LOOPBACK_TEST) | |
433 | if (!fsm) | |
434 | printk(KERN_ERR "ASSERTION ERROR: fsm is NULL!!\n"); | |
435 | else if (fsm->m_status != M_CONNECTED) { | |
436 | printk(KERN_EMERG "ASSERTION ERROR: Device is NOT ready. status=%d\n", | |
437 | fsm->m_status); | |
438 | kfree_skb(skb); | |
439 | return 0; | |
440 | } | |
441 | #endif | |
442 | ||
443 | #if defined(CONFIG_WIMAX_GDM72XX_QOS) | |
444 | ret = gdm_qos_send_hci_pkt(skb, dev); | |
445 | #else | |
446 | ret = gdm_wimax_send_tx(skb, dev); | |
447 | #endif | |
448 | return ret; | |
449 | } | |
450 | ||
451 | static int gdm_wimax_set_config(struct net_device *dev, struct ifmap *map) | |
452 | { | |
453 | if (dev->flags & IFF_UP) | |
454 | return -EBUSY; | |
455 | ||
456 | return 0; | |
457 | } | |
458 | ||
459 | static void __gdm_wimax_set_mac_addr(struct net_device *dev, char *mac_addr) | |
460 | { | |
461 | u16 hci_pkt_buf[32 / sizeof(u16)]; | |
462 | u8 *pkt = (u8 *) &hci_pkt_buf[0]; | |
463 | struct nic *nic = netdev_priv(dev); | |
464 | ||
465 | /* Since dev is registered as a ethernet device, | |
466 | * ether_setup has made dev->addr_len to be ETH_ALEN | |
467 | */ | |
468 | memcpy(dev->dev_addr, mac_addr, dev->addr_len); | |
469 | ||
470 | /* Let lower layer know of this change by sending | |
471 | * SetInformation(MAC Address) | |
472 | */ | |
473 | hci_pkt_buf[0] = H2B(WIMAX_SET_INFO); /* cmd_evt */ | |
474 | hci_pkt_buf[1] = H2B(8); /* size */ | |
475 | pkt[4] = 0; /* T */ | |
476 | pkt[5] = 6; /* L */ | |
477 | memcpy(pkt + 6, mac_addr, dev->addr_len); /* V */ | |
478 | ||
479 | gdm_wimax_send(nic, pkt, HCI_HEADER_SIZE + 8); | |
480 | } | |
481 | ||
482 | /* A driver function */ | |
483 | static int gdm_wimax_set_mac_addr(struct net_device *dev, void *p) | |
484 | { | |
485 | struct sockaddr *addr = p; | |
486 | ||
487 | if (netif_running(dev)) | |
488 | return -EBUSY; | |
489 | ||
490 | if (!is_valid_ether_addr(addr->sa_data)) | |
491 | return -EADDRNOTAVAIL; | |
492 | ||
493 | __gdm_wimax_set_mac_addr(dev, addr->sa_data); | |
494 | ||
495 | return 0; | |
496 | } | |
497 | ||
498 | static struct net_device_stats *gdm_wimax_stats(struct net_device *dev) | |
499 | { | |
500 | struct nic *nic = netdev_priv(dev); | |
501 | ||
502 | return &nic->stats; | |
503 | } | |
504 | ||
505 | static int gdm_wimax_open(struct net_device *dev) | |
506 | { | |
507 | struct nic *nic = netdev_priv(dev); | |
508 | struct fsm_s *fsm = (struct fsm_s *) nic->sdk_data[SIOC_DATA_FSM].buf; | |
509 | ||
510 | netif_start_queue(dev); | |
511 | ||
512 | if (fsm && fsm->m_status != M_INIT) | |
513 | gdm_wimax_ind_if_updown(dev, 1); | |
514 | return 0; | |
515 | } | |
516 | ||
517 | static int gdm_wimax_close(struct net_device *dev) | |
518 | { | |
519 | struct nic *nic = netdev_priv(dev); | |
520 | struct fsm_s *fsm = (struct fsm_s *) nic->sdk_data[SIOC_DATA_FSM].buf; | |
521 | ||
522 | netif_stop_queue(dev); | |
523 | ||
524 | if (fsm && fsm->m_status != M_INIT) | |
525 | gdm_wimax_ind_if_updown(dev, 0); | |
526 | return 0; | |
527 | } | |
528 | ||
529 | static void kdelete(void **buf) | |
530 | { | |
531 | if (buf && *buf) { | |
532 | kfree(*buf); | |
533 | *buf = NULL; | |
534 | } | |
535 | } | |
536 | ||
537 | static int gdm_wimax_ioctl_get_data(struct data_s *dst, struct data_s *src) | |
538 | { | |
539 | int size; | |
540 | ||
541 | size = dst->size < src->size ? dst->size : src->size; | |
542 | ||
543 | dst->size = size; | |
544 | if (src->size) { | |
545 | if (!dst->buf) | |
546 | return -EINVAL; | |
547 | if (copy_to_user(dst->buf, src->buf, size)) | |
548 | return -EFAULT; | |
549 | } | |
550 | return 0; | |
551 | } | |
552 | ||
553 | static int gdm_wimax_ioctl_set_data(struct data_s *dst, struct data_s *src) | |
554 | { | |
555 | if (!src->size) { | |
556 | dst->size = 0; | |
557 | return 0; | |
558 | } | |
559 | ||
560 | if (!src->buf) | |
561 | return -EINVAL; | |
562 | ||
563 | if (!(dst->buf && dst->size == src->size)) { | |
564 | kdelete(&dst->buf); | |
565 | dst->buf = kmalloc(src->size, GFP_KERNEL); | |
566 | if (dst->buf == NULL) | |
567 | return -ENOMEM; | |
568 | } | |
569 | ||
570 | if (copy_from_user(dst->buf, src->buf, src->size)) { | |
571 | kdelete(&dst->buf); | |
572 | return -EFAULT; | |
573 | } | |
574 | dst->size = src->size; | |
575 | return 0; | |
576 | } | |
577 | ||
578 | static void gdm_wimax_cleanup_ioctl(struct net_device *dev) | |
579 | { | |
580 | struct nic *nic = netdev_priv(dev); | |
581 | int i; | |
582 | ||
583 | for (i = 0; i < SIOC_DATA_MAX; i++) | |
584 | kdelete(&nic->sdk_data[i].buf); | |
585 | } | |
586 | ||
587 | static void gdm_update_fsm(struct net_device *dev, struct fsm_s *new_fsm) | |
588 | { | |
589 | struct nic *nic = netdev_priv(dev); | |
590 | struct fsm_s *cur_fsm = | |
591 | (struct fsm_s *) nic->sdk_data[SIOC_DATA_FSM].buf; | |
592 | ||
593 | if (!cur_fsm) | |
594 | return; | |
595 | ||
596 | if (cur_fsm->m_status != new_fsm->m_status || | |
597 | cur_fsm->c_status != new_fsm->c_status) { | |
598 | if (new_fsm->m_status == M_CONNECTED) | |
599 | netif_carrier_on(dev); | |
600 | else if (cur_fsm->m_status == M_CONNECTED) { | |
601 | netif_carrier_off(dev); | |
602 | #if defined(CONFIG_WIMAX_GDM72XX_QOS) | |
603 | gdm_qos_release_list(nic); | |
604 | #endif | |
605 | } | |
606 | gdm_wimax_ind_fsm_update(dev, new_fsm); | |
607 | } | |
608 | } | |
609 | ||
610 | static int gdm_wimax_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) | |
611 | { | |
612 | struct wm_req_s *req = (struct wm_req_s *) ifr; | |
613 | struct nic *nic = netdev_priv(dev); | |
614 | int ret; | |
615 | ||
616 | if (cmd != SIOCWMIOCTL) | |
617 | return -EOPNOTSUPP; | |
618 | ||
619 | switch (req->cmd) { | |
620 | case SIOCG_DATA: | |
621 | case SIOCS_DATA: | |
622 | if (req->data_id >= SIOC_DATA_MAX) { | |
623 | printk(KERN_ERR | |
624 | "%s error: data-index(%d) is invalid!!\n", | |
625 | __func__, req->data_id); | |
626 | return -EOPNOTSUPP; | |
627 | } | |
628 | if (req->cmd == SIOCG_DATA) { | |
629 | ret = gdm_wimax_ioctl_get_data(&req->data, | |
630 | &nic->sdk_data[req->data_id]); | |
631 | if (ret < 0) | |
632 | return ret; | |
633 | } else if (req->cmd == SIOCS_DATA) { | |
634 | if (req->data_id == SIOC_DATA_FSM) { | |
635 | /*NOTE: gdm_update_fsm should be called | |
636 | before gdm_wimax_ioctl_set_data is called*/ | |
637 | gdm_update_fsm(dev, | |
638 | (struct fsm_s *) req->data.buf); | |
639 | } | |
640 | ret = gdm_wimax_ioctl_set_data( | |
641 | &nic->sdk_data[req->data_id], &req->data); | |
642 | if (ret < 0) | |
643 | return ret; | |
644 | } | |
645 | break; | |
646 | default: | |
647 | printk(KERN_ERR "%s: %x unknown ioctl\n", __func__, cmd); | |
648 | return -EOPNOTSUPP; | |
649 | } | |
650 | ||
651 | return 0; | |
652 | } | |
653 | ||
654 | static void gdm_wimax_prepare_device(struct net_device *dev) | |
655 | { | |
656 | struct nic *nic = netdev_priv(dev); | |
657 | u16 buf[32 / sizeof(u16)]; | |
658 | struct hci_s *hci = (struct hci_s *) buf; | |
659 | u16 len = 0; | |
660 | u32 val = 0; | |
661 | ||
662 | #define BIT_MULTI_CS 0 | |
663 | #define BIT_WIMAX 1 | |
664 | #define BIT_QOS 2 | |
665 | #define BIT_AGGREGATION 3 | |
666 | ||
667 | /* GetInformation mac address */ | |
668 | len = 0; | |
669 | hci->cmd_evt = H2B(WIMAX_GET_INFO); | |
670 | hci->data[len++] = TLV_T(T_MAC_ADDRESS); | |
671 | hci->length = H2B(len); | |
672 | gdm_wimax_send(nic, hci, HCI_HEADER_SIZE+len); | |
673 | ||
674 | val = (1<<BIT_WIMAX) | (1<<BIT_MULTI_CS); | |
675 | #if defined(CONFIG_WIMAX_GDM72XX_QOS) | |
676 | val |= (1<<BIT_QOS); | |
677 | #endif | |
678 | #if defined(CONFIG_WIMAX_GDM72XX_WIMAX2) | |
679 | val |= (1<<BIT_AGGREGATION); | |
680 | #endif | |
681 | ||
682 | /* Set capability */ | |
683 | len = 0; | |
684 | hci->cmd_evt = H2B(WIMAX_SET_INFO); | |
685 | hci->data[len++] = TLV_T(T_CAPABILITY); | |
686 | hci->data[len++] = TLV_L(T_CAPABILITY); | |
687 | val = DH2B(val); | |
688 | memcpy(&hci->data[len], &val, TLV_L(T_CAPABILITY)); | |
689 | len += TLV_L(T_CAPABILITY); | |
690 | hci->length = H2B(len); | |
691 | gdm_wimax_send(nic, hci, HCI_HEADER_SIZE+len); | |
692 | ||
693 | printk(KERN_INFO "GDM WiMax Set CAPABILITY: 0x%08X\n", DB2H(val)); | |
694 | } | |
695 | ||
696 | static int gdm_wimax_hci_get_tlv(u8 *buf, u8 *T, u16 *L, u8 **V) | |
697 | { | |
698 | #define __U82U16(b) ((u16)((u8 *)(b))[0] | ((u16)((u8 *)(b))[1] << 8)) | |
699 | int next_pos; | |
700 | ||
701 | *T = buf[0]; | |
702 | if (buf[1] == 0x82) { | |
703 | *L = B2H(__U82U16(&buf[2])); | |
704 | next_pos = 1/*type*/+3/*len*/; | |
705 | } else { | |
706 | *L = buf[1]; | |
707 | next_pos = 1/*type*/+1/*len*/; | |
708 | } | |
709 | *V = &buf[next_pos]; | |
710 | ||
711 | next_pos += *L/*length of val*/; | |
712 | return next_pos; | |
713 | } | |
714 | ||
715 | static int gdm_wimax_get_prepared_info(struct net_device *dev, char *buf, | |
716 | int len) | |
717 | { | |
718 | u8 T, *V; | |
719 | u16 L; | |
720 | u16 cmd_evt, cmd_len; | |
721 | int pos = HCI_HEADER_SIZE; | |
722 | ||
723 | cmd_evt = B2H(*(u16 *)&buf[0]); | |
724 | cmd_len = B2H(*(u16 *)&buf[2]); | |
725 | ||
726 | if (len < cmd_len + HCI_HEADER_SIZE) { | |
727 | printk(KERN_ERR "%s: invalid length [%d/%d]\n", __func__, | |
728 | cmd_len + HCI_HEADER_SIZE, len); | |
729 | return -1; | |
730 | } | |
731 | ||
732 | if (cmd_evt == WIMAX_GET_INFO_RESULT) { | |
733 | if (cmd_len < 2) { | |
734 | printk(KERN_ERR "%s: len is too short [%x/%d]\n", | |
735 | __func__, cmd_evt, len); | |
736 | return -1; | |
737 | } | |
738 | ||
739 | pos += gdm_wimax_hci_get_tlv(&buf[pos], &T, &L, &V); | |
740 | if (T == TLV_T(T_MAC_ADDRESS)) { | |
741 | if (L != dev->addr_len) { | |
742 | printk(KERN_ERR | |
743 | "%s Invalid inofrmation result T/L " | |
744 | "[%x/%d]\n", __func__, T, L); | |
745 | return -1; | |
746 | } | |
747 | printk(KERN_INFO | |
748 | "MAC change [%02x:%02x:%02x:%02x:%02x:%02x]" | |
749 | "->[%02x:%02x:%02x:%02x:%02x:%02x]\n", | |
750 | dev->dev_addr[0], dev->dev_addr[1], | |
751 | dev->dev_addr[2], dev->dev_addr[3], | |
752 | dev->dev_addr[4], dev->dev_addr[5], | |
753 | V[0], V[1], V[2], V[3], V[4], V[5]); | |
754 | memcpy(dev->dev_addr, V, dev->addr_len); | |
755 | return 1; | |
756 | } | |
757 | } | |
758 | ||
759 | gdm_wimax_event_send(dev, buf, len); | |
760 | return 0; | |
761 | } | |
762 | ||
763 | static void gdm_wimax_netif_rx(struct net_device *dev, char *buf, int len) | |
764 | { | |
765 | struct nic *nic = netdev_priv(dev); | |
766 | struct sk_buff *skb; | |
767 | int ret; | |
768 | ||
769 | #if defined(DEBUG_SDU) | |
770 | dump_eth_packet("RX", buf, len); | |
771 | #endif | |
772 | ||
773 | skb = dev_alloc_skb(len + 2); | |
774 | if (!skb) { | |
775 | printk(KERN_ERR "%s: dev_alloc_skb failed!\n", __func__); | |
776 | return; | |
777 | } | |
778 | skb_reserve(skb, 2); | |
779 | ||
780 | nic->stats.rx_packets++; | |
781 | nic->stats.rx_bytes += len; | |
782 | ||
783 | memcpy(skb_put(skb, len), buf, len); | |
784 | ||
785 | skb->dev = dev; | |
786 | skb->protocol = eth_type_trans(skb, dev); /* what will happen? */ | |
787 | ||
788 | ret = in_interrupt() ? netif_rx(skb) : netif_rx_ni(skb); | |
789 | if (ret == NET_RX_DROP) | |
790 | printk(KERN_ERR "%s skb dropped\n", __func__); | |
791 | } | |
792 | ||
793 | static void gdm_wimax_transmit_aggr_pkt(struct net_device *dev, char *buf, | |
794 | int len) | |
795 | { | |
796 | #define HCI_PADDING_BYTE 4 | |
797 | #define HCI_RESERVED_BYTE 4 | |
798 | struct hci_s *hci; | |
799 | int length; | |
800 | ||
801 | while (len > 0) { | |
802 | hci = (struct hci_s *) buf; | |
803 | ||
804 | if (B2H(hci->cmd_evt) != WIMAX_RX_SDU) { | |
805 | printk(KERN_ERR "Wrong cmd_evt(0x%04X)\n", | |
806 | B2H(hci->cmd_evt)); | |
807 | break; | |
808 | } | |
809 | ||
810 | length = B2H(hci->length); | |
811 | gdm_wimax_netif_rx(dev, hci->data, length); | |
812 | ||
813 | if (length & 0x3) { | |
814 | /* Add padding size */ | |
815 | length += HCI_PADDING_BYTE - (length & 0x3); | |
816 | } | |
817 | ||
818 | length += HCI_HEADER_SIZE + HCI_RESERVED_BYTE; | |
819 | len -= length; | |
820 | buf += length; | |
821 | } | |
822 | } | |
823 | ||
824 | static void gdm_wimax_transmit_pkt(struct net_device *dev, char *buf, int len) | |
825 | { | |
826 | #if defined(CONFIG_WIMAX_GDM72XX_QOS) | |
827 | struct nic *nic = netdev_priv(dev); | |
828 | #endif | |
829 | u16 cmd_evt, cmd_len; | |
830 | ||
831 | /* This code is added for certain rx packet to be ignored. */ | |
832 | if (len == 0) | |
833 | return; | |
834 | ||
835 | cmd_evt = B2H(*(u16 *)&buf[0]); | |
836 | cmd_len = B2H(*(u16 *)&buf[2]); | |
837 | ||
838 | if (len < cmd_len + HCI_HEADER_SIZE) { | |
839 | if (len) | |
840 | printk(KERN_ERR "%s: invalid length [%d/%d]\n", | |
841 | __func__, cmd_len + HCI_HEADER_SIZE, len); | |
842 | return; | |
843 | } | |
844 | ||
845 | switch (cmd_evt) { | |
846 | case WIMAX_RX_SDU_AGGR: | |
847 | gdm_wimax_transmit_aggr_pkt(dev, &buf[HCI_HEADER_SIZE], | |
848 | cmd_len); | |
849 | break; | |
850 | case WIMAX_RX_SDU: | |
851 | gdm_wimax_netif_rx(dev, &buf[HCI_HEADER_SIZE], cmd_len); | |
852 | break; | |
853 | #if defined(CONFIG_WIMAX_GDM72XX_QOS) | |
854 | case WIMAX_EVT_MODEM_REPORT: | |
855 | gdm_recv_qos_hci_packet(nic, buf, len); | |
856 | break; | |
857 | #endif | |
858 | case WIMAX_SDU_TX_FLOW: | |
859 | if (buf[4] == 0) { | |
860 | if (!netif_queue_stopped(dev)) | |
861 | netif_stop_queue(dev); | |
862 | } else if (buf[4] == 1) { | |
863 | if (netif_queue_stopped(dev)) | |
864 | netif_wake_queue(dev); | |
865 | } | |
866 | break; | |
867 | default: | |
868 | gdm_wimax_event_send(dev, buf, len); | |
869 | break; | |
870 | } | |
871 | } | |
872 | ||
873 | static void gdm_wimax_ind_fsm_update(struct net_device *dev, struct fsm_s *fsm) | |
874 | { | |
875 | u16 buf[32 / sizeof(u16)]; | |
876 | u8 *hci_pkt_buf = (u8 *)&buf[0]; | |
877 | ||
878 | /* Indicate updating fsm */ | |
879 | buf[0] = H2B(WIMAX_FSM_UPDATE); | |
880 | buf[1] = H2B(sizeof(struct fsm_s)); | |
881 | memcpy(&hci_pkt_buf[HCI_HEADER_SIZE], fsm, sizeof(struct fsm_s)); | |
882 | ||
883 | gdm_wimax_event_send(dev, hci_pkt_buf, | |
884 | HCI_HEADER_SIZE + sizeof(struct fsm_s)); | |
885 | } | |
886 | ||
887 | static void gdm_wimax_ind_if_updown(struct net_device *dev, int if_up) | |
888 | { | |
889 | u16 buf[32 / sizeof(u16)]; | |
890 | struct hci_s *hci = (struct hci_s *) buf; | |
891 | unsigned char up_down; | |
892 | ||
893 | up_down = if_up ? WIMAX_IF_UP : WIMAX_IF_DOWN; | |
894 | ||
895 | /* Indicate updating fsm */ | |
896 | hci->cmd_evt = H2B(WIMAX_IF_UPDOWN); | |
897 | hci->length = H2B(sizeof(up_down)); | |
898 | hci->data[0] = up_down; | |
899 | ||
900 | gdm_wimax_event_send(dev, (char *)hci, HCI_HEADER_SIZE+sizeof(up_down)); | |
901 | } | |
902 | ||
903 | static void rx_complete(void *arg, void *data, int len) | |
904 | { | |
905 | struct nic *nic = arg; | |
906 | ||
907 | gdm_wimax_transmit_pkt(nic->netdev, data, len); | |
908 | gdm_wimax_rcv_with_cb(nic, rx_complete, nic); | |
909 | } | |
910 | ||
911 | static void prepare_rx_complete(void *arg, void *data, int len) | |
912 | { | |
913 | struct nic *nic = arg; | |
914 | int ret; | |
915 | ||
916 | ret = gdm_wimax_get_prepared_info(nic->netdev, data, len); | |
917 | if (ret == 1) | |
918 | gdm_wimax_rcv_with_cb(nic, rx_complete, nic); | |
919 | else { | |
920 | if (ret < 0) | |
921 | printk(KERN_ERR "get_prepared_info failed(%d)\n", ret); | |
922 | gdm_wimax_rcv_with_cb(nic, prepare_rx_complete, nic); | |
923 | #if 0 | |
924 | /* Re-prepare WiMax device */ | |
925 | gdm_wimax_prepare_device(nic->netdev); | |
926 | #endif | |
927 | } | |
928 | } | |
929 | ||
930 | static void start_rx_proc(struct nic *nic) | |
931 | { | |
932 | gdm_wimax_rcv_with_cb(nic, prepare_rx_complete, nic); | |
933 | } | |
934 | ||
935 | static struct net_device_ops gdm_netdev_ops = { | |
936 | .ndo_open = gdm_wimax_open, | |
937 | .ndo_stop = gdm_wimax_close, | |
938 | .ndo_set_config = gdm_wimax_set_config, | |
939 | .ndo_start_xmit = gdm_wimax_tx, | |
940 | .ndo_get_stats = gdm_wimax_stats, | |
941 | .ndo_set_mac_address = gdm_wimax_set_mac_addr, | |
942 | .ndo_do_ioctl = gdm_wimax_ioctl, | |
943 | }; | |
944 | ||
54bc1ff1 | 945 | int register_wimax_device(struct phy_dev *phy_dev, struct device *pdev) |
247e9cff SA |
946 | { |
947 | struct nic *nic = NULL; | |
948 | struct net_device *dev; | |
949 | int ret; | |
950 | ||
951 | dev = (struct net_device *)alloc_netdev(sizeof(*nic), | |
952 | "wm%d", ether_setup); | |
953 | ||
954 | if (dev == NULL) { | |
955 | printk(KERN_ERR "alloc_etherdev failed\n"); | |
956 | return -ENOMEM; | |
957 | } | |
958 | ||
54bc1ff1 | 959 | SET_NETDEV_DEV(dev, pdev); |
247e9cff SA |
960 | dev->mtu = 1400; |
961 | dev->netdev_ops = &gdm_netdev_ops; | |
962 | dev->flags &= ~IFF_MULTICAST; | |
963 | memcpy(dev->dev_addr, gdm_wimax_macaddr, sizeof(gdm_wimax_macaddr)); | |
964 | ||
965 | nic = netdev_priv(dev); | |
966 | memset(nic, 0, sizeof(*nic)); | |
967 | ||
968 | nic->netdev = dev; | |
969 | nic->phy_dev = phy_dev; | |
970 | phy_dev->netdev = dev; | |
971 | ||
972 | /* event socket init */ | |
973 | ret = gdm_wimax_event_init(); | |
974 | if (ret < 0) { | |
975 | printk(KERN_ERR "Cannot create event.\n"); | |
976 | goto cleanup; | |
977 | } | |
978 | ||
979 | ret = register_netdev(dev); | |
980 | if (ret) | |
981 | goto cleanup; | |
982 | ||
983 | #if defined(LOOPBACK_TEST) | |
984 | netif_start_queue(dev); | |
985 | netif_carrier_on(dev); | |
986 | #else | |
987 | netif_carrier_off(dev); | |
988 | #endif | |
989 | ||
990 | #ifdef CONFIG_WIMAX_GDM72XX_QOS | |
991 | gdm_qos_init(nic); | |
992 | #endif | |
993 | ||
994 | start_rx_proc(nic); | |
995 | ||
996 | /* Prepare WiMax device */ | |
997 | gdm_wimax_prepare_device(dev); | |
998 | ||
999 | return 0; | |
1000 | ||
1001 | cleanup: | |
1002 | printk(KERN_ERR "register_netdev failed\n"); | |
1003 | free_netdev(dev); | |
1004 | return ret; | |
1005 | } | |
1006 | ||
1007 | void unregister_wimax_device(struct phy_dev *phy_dev) | |
1008 | { | |
1009 | struct nic *nic = netdev_priv(phy_dev->netdev); | |
1010 | struct fsm_s *fsm = (struct fsm_s *) nic->sdk_data[SIOC_DATA_FSM].buf; | |
1011 | ||
1012 | if (fsm) | |
1013 | fsm->m_status = M_INIT; | |
1014 | unregister_netdev(nic->netdev); | |
1015 | ||
1016 | gdm_wimax_event_exit(); | |
1017 | ||
1018 | #if defined(CONFIG_WIMAX_GDM72XX_QOS) | |
1019 | gdm_qos_release_list(nic); | |
1020 | #endif | |
1021 | ||
1022 | gdm_wimax_cleanup_ioctl(phy_dev->netdev); | |
1023 | ||
1024 | free_netdev(nic->netdev); | |
1025 | } |