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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 | ||
2d839022 YT |
14 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
15 | ||
247e9cff SA |
16 | #include <linux/etherdevice.h> |
17 | #include <asm/byteorder.h> | |
18 | ||
19 | #include <linux/ip.h> | |
20 | #include <linux/tcp.h> | |
21 | #include <linux/if_ether.h> | |
22 | ||
23 | #include "gdm_wimax.h" | |
24 | #include "hci.h" | |
25 | #include "gdm_qos.h" | |
26 | ||
27 | #define B2H(x) __be16_to_cpu(x) | |
28 | ||
247e9cff SA |
29 | #define MAX_FREE_LIST_CNT 32 |
30 | static struct { | |
31 | struct list_head head; | |
32 | int cnt; | |
33 | spinlock_t lock; | |
34 | } qos_free_list; | |
35 | ||
36 | static void init_qos_entry_list(void) | |
37 | { | |
38 | qos_free_list.cnt = 0; | |
39 | INIT_LIST_HEAD(&qos_free_list.head); | |
40 | spin_lock_init(&qos_free_list.lock); | |
41 | } | |
42 | ||
43 | static void *alloc_qos_entry(void) | |
44 | { | |
45 | struct qos_entry_s *entry; | |
46 | unsigned long flags; | |
47 | ||
48 | spin_lock_irqsave(&qos_free_list.lock, flags); | |
49 | if (qos_free_list.cnt) { | |
50 | entry = list_entry(qos_free_list.head.prev, struct qos_entry_s, | |
51 | list); | |
52 | list_del(&entry->list); | |
53 | qos_free_list.cnt--; | |
54 | spin_unlock_irqrestore(&qos_free_list.lock, flags); | |
55 | return entry; | |
56 | } | |
57 | spin_unlock_irqrestore(&qos_free_list.lock, flags); | |
58 | ||
59 | entry = kmalloc(sizeof(struct qos_entry_s), GFP_ATOMIC); | |
60 | return entry; | |
61 | } | |
62 | ||
63 | static void free_qos_entry(void *entry) | |
64 | { | |
65 | struct qos_entry_s *qentry = (struct qos_entry_s *) entry; | |
66 | unsigned long flags; | |
67 | ||
68 | spin_lock_irqsave(&qos_free_list.lock, flags); | |
69 | if (qos_free_list.cnt < MAX_FREE_LIST_CNT) { | |
70 | list_add(&qentry->list, &qos_free_list.head); | |
71 | qos_free_list.cnt++; | |
72 | spin_unlock_irqrestore(&qos_free_list.lock, flags); | |
73 | return; | |
74 | } | |
75 | spin_unlock_irqrestore(&qos_free_list.lock, flags); | |
76 | ||
77 | kfree(entry); | |
78 | } | |
79 | ||
80 | static void free_qos_entry_list(struct list_head *free_list) | |
81 | { | |
82 | struct qos_entry_s *entry, *n; | |
83 | int total_free = 0; | |
84 | ||
85 | list_for_each_entry_safe(entry, n, free_list, list) { | |
86 | list_del(&entry->list); | |
87 | kfree(entry); | |
88 | total_free++; | |
89 | } | |
90 | ||
2d839022 | 91 | pr_debug("%s: total_free_cnt=%d\n", __func__, total_free); |
247e9cff SA |
92 | } |
93 | ||
94 | void gdm_qos_init(void *nic_ptr) | |
95 | { | |
96 | struct nic *nic = nic_ptr; | |
97 | struct qos_cb_s *qcb = &nic->qos; | |
98 | int i; | |
99 | ||
100 | for (i = 0 ; i < QOS_MAX; i++) { | |
101 | INIT_LIST_HEAD(&qcb->qos_list[i]); | |
13b2663c ML |
102 | qcb->csr[i].qos_buf_count = 0; |
103 | qcb->csr[i].enabled = 0; | |
247e9cff SA |
104 | } |
105 | ||
106 | qcb->qos_list_cnt = 0; | |
107 | qcb->qos_null_idx = QOS_MAX-1; | |
108 | qcb->qos_limit_size = 255; | |
109 | ||
110 | spin_lock_init(&qcb->qos_lock); | |
111 | ||
112 | init_qos_entry_list(); | |
113 | } | |
114 | ||
115 | void gdm_qos_release_list(void *nic_ptr) | |
116 | { | |
117 | struct nic *nic = nic_ptr; | |
118 | struct qos_cb_s *qcb = &nic->qos; | |
119 | unsigned long flags; | |
120 | struct qos_entry_s *entry, *n; | |
121 | struct list_head free_list; | |
122 | int i; | |
123 | ||
124 | INIT_LIST_HEAD(&free_list); | |
125 | ||
126 | spin_lock_irqsave(&qcb->qos_lock, flags); | |
127 | ||
128 | for (i = 0; i < QOS_MAX; i++) { | |
13b2663c ML |
129 | qcb->csr[i].qos_buf_count = 0; |
130 | qcb->csr[i].enabled = 0; | |
247e9cff SA |
131 | } |
132 | ||
133 | qcb->qos_list_cnt = 0; | |
134 | qcb->qos_null_idx = QOS_MAX-1; | |
135 | ||
136 | for (i = 0; i < QOS_MAX; i++) { | |
137 | list_for_each_entry_safe(entry, n, &qcb->qos_list[i], list) { | |
138 | list_move_tail(&entry->list, &free_list); | |
139 | } | |
140 | } | |
141 | spin_unlock_irqrestore(&qcb->qos_lock, flags); | |
142 | free_qos_entry_list(&free_list); | |
143 | } | |
144 | ||
145 | static u32 chk_ipv4_rule(struct gdm_wimax_csr_s *csr, u8 *Stream, u8 *port) | |
146 | { | |
147 | int i; | |
148 | ||
13b2663c ML |
149 | if (csr->classifier_rule_en&IPTYPEOFSERVICE) { |
150 | if (((Stream[1] & csr->ip2s_mask) < csr->ip2s_lo) || | |
151 | ((Stream[1] & csr->ip2s_mask) > csr->ip2s_hi)) | |
247e9cff SA |
152 | return 1; |
153 | } | |
154 | ||
13b2663c ML |
155 | if (csr->classifier_rule_en&PROTOCOL) { |
156 | if (Stream[9] != csr->protocol) | |
247e9cff SA |
157 | return 1; |
158 | } | |
159 | ||
13b2663c | 160 | if (csr->classifier_rule_en&IPMASKEDSRCADDRESS) { |
247e9cff | 161 | for (i = 0; i < 4; i++) { |
13b2663c ML |
162 | if ((Stream[12 + i] & csr->ipsrc_addrmask[i]) != |
163 | (csr->ipsrc_addr[i] & csr->ipsrc_addrmask[i])) | |
247e9cff SA |
164 | return 1; |
165 | } | |
166 | } | |
167 | ||
13b2663c | 168 | if (csr->classifier_rule_en&IPMASKEDDSTADDRESS) { |
247e9cff | 169 | for (i = 0; i < 4; i++) { |
13b2663c ML |
170 | if ((Stream[16 + i] & csr->ipdst_addrmask[i]) != |
171 | (csr->ipdst_addr[i] & csr->ipdst_addrmask[i])) | |
247e9cff SA |
172 | return 1; |
173 | } | |
174 | } | |
175 | ||
13b2663c | 176 | if (csr->classifier_rule_en&PROTOCOLSRCPORTRANGE) { |
247e9cff | 177 | i = ((port[0]<<8)&0xff00)+port[1]; |
13b2663c | 178 | if ((i < csr->srcport_lo) || (i > csr->srcport_hi)) |
247e9cff SA |
179 | return 1; |
180 | } | |
181 | ||
13b2663c | 182 | if (csr->classifier_rule_en&PROTOCOLDSTPORTRANGE) { |
247e9cff | 183 | i = ((port[2]<<8)&0xff00)+port[3]; |
13b2663c | 184 | if ((i < csr->dstport_lo) || (i > csr->dstport_hi)) |
247e9cff SA |
185 | return 1; |
186 | } | |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
9b90b712 | 191 | static u32 get_qos_index(struct nic *nic, u8 *iph, u8 *tcpudph) |
247e9cff SA |
192 | { |
193 | u32 IP_Ver, Header_Len, i; | |
194 | struct qos_cb_s *qcb = &nic->qos; | |
195 | ||
196 | if (iph == NULL || tcpudph == NULL) | |
197 | return -1; | |
198 | ||
199 | IP_Ver = (iph[0]>>4)&0xf; | |
200 | Header_Len = iph[0]&0xf; | |
201 | ||
202 | if (IP_Ver == 4) { | |
203 | for (i = 0; i < QOS_MAX; i++) { | |
13b2663c ML |
204 | if (qcb->csr[i].enabled) { |
205 | if (qcb->csr[i].classifier_rule_en) { | |
247e9cff SA |
206 | if (chk_ipv4_rule(&qcb->csr[i], iph, |
207 | tcpudph) == 0) | |
208 | return i; | |
209 | } | |
210 | } | |
211 | } | |
212 | } | |
213 | ||
214 | return -1; | |
215 | } | |
216 | ||
217 | static u32 extract_qos_list(struct nic *nic, struct list_head *head) | |
218 | { | |
219 | struct qos_cb_s *qcb = &nic->qos; | |
220 | struct qos_entry_s *entry; | |
221 | int i; | |
222 | ||
223 | INIT_LIST_HEAD(head); | |
224 | ||
225 | for (i = 0; i < QOS_MAX; i++) { | |
13b2663c ML |
226 | if (qcb->csr[i].enabled) { |
227 | if (qcb->csr[i].qos_buf_count < qcb->qos_limit_size) { | |
247e9cff SA |
228 | if (!list_empty(&qcb->qos_list[i])) { |
229 | entry = list_entry( | |
230 | qcb->qos_list[i].prev, | |
231 | struct qos_entry_s, list); | |
232 | list_move_tail(&entry->list, head); | |
13b2663c | 233 | qcb->csr[i].qos_buf_count++; |
247e9cff SA |
234 | |
235 | if (!list_empty(&qcb->qos_list[i])) | |
2d839022 YT |
236 | netdev_warn(nic->netdev, |
237 | "Index(%d) is piled!!\n", | |
238 | i); | |
247e9cff SA |
239 | } |
240 | } | |
241 | } | |
242 | } | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
247 | static void send_qos_list(struct nic *nic, struct list_head *head) | |
248 | { | |
249 | struct qos_entry_s *entry, *n; | |
250 | ||
251 | list_for_each_entry_safe(entry, n, head, list) { | |
252 | list_del(&entry->list); | |
253 | free_qos_entry(entry); | |
254 | gdm_wimax_send_tx(entry->skb, entry->dev); | |
255 | } | |
256 | } | |
257 | ||
258 | int gdm_qos_send_hci_pkt(struct sk_buff *skb, struct net_device *dev) | |
259 | { | |
260 | struct nic *nic = netdev_priv(dev); | |
261 | int index; | |
262 | struct qos_cb_s *qcb = &nic->qos; | |
263 | unsigned long flags; | |
264 | struct ethhdr *ethh = (struct ethhdr *) (skb->data + HCI_HEADER_SIZE); | |
265 | struct iphdr *iph = (struct iphdr *) ((char *) ethh + ETH_HLEN); | |
266 | struct tcphdr *tcph; | |
267 | struct qos_entry_s *entry = NULL; | |
268 | struct list_head send_list; | |
269 | int ret = 0; | |
270 | ||
271 | tcph = (struct tcphdr *) iph + iph->ihl*4; | |
272 | ||
273 | if (B2H(ethh->h_proto) == ETH_P_IP) { | |
274 | if (qcb->qos_list_cnt && !qos_free_list.cnt) { | |
275 | entry = alloc_qos_entry(); | |
276 | entry->skb = skb; | |
277 | entry->dev = dev; | |
2d839022 YT |
278 | netdev_dbg(dev, "qcb->qos_list_cnt=%d\n", |
279 | qcb->qos_list_cnt); | |
247e9cff SA |
280 | } |
281 | ||
282 | spin_lock_irqsave(&qcb->qos_lock, flags); | |
283 | if (qcb->qos_list_cnt) { | |
284 | index = get_qos_index(nic, (u8 *)iph, (u8 *) tcph); | |
285 | if (index == -1) | |
286 | index = qcb->qos_null_idx; | |
287 | ||
288 | if (!entry) { | |
289 | entry = alloc_qos_entry(); | |
290 | entry->skb = skb; | |
291 | entry->dev = dev; | |
292 | } | |
293 | ||
294 | list_add_tail(&entry->list, &qcb->qos_list[index]); | |
295 | extract_qos_list(nic, &send_list); | |
296 | spin_unlock_irqrestore(&qcb->qos_lock, flags); | |
297 | send_qos_list(nic, &send_list); | |
298 | goto out; | |
299 | } | |
300 | spin_unlock_irqrestore(&qcb->qos_lock, flags); | |
301 | if (entry) | |
302 | free_qos_entry(entry); | |
303 | } | |
304 | ||
305 | ret = gdm_wimax_send_tx(skb, dev); | |
306 | out: | |
307 | return ret; | |
308 | } | |
309 | ||
310 | static u32 get_csr(struct qos_cb_s *qcb, u32 SFID, int mode) | |
311 | { | |
312 | int i; | |
313 | ||
314 | for (i = 0; i < qcb->qos_list_cnt; i++) { | |
315 | if (qcb->csr[i].SFID == SFID) | |
316 | return i; | |
317 | } | |
318 | ||
319 | if (mode) { | |
320 | for (i = 0; i < QOS_MAX; i++) { | |
13b2663c ML |
321 | if (qcb->csr[i].enabled == 0) { |
322 | qcb->csr[i].enabled = 1; | |
247e9cff SA |
323 | qcb->qos_list_cnt++; |
324 | return i; | |
325 | } | |
326 | } | |
327 | } | |
328 | return -1; | |
329 | } | |
330 | ||
331 | #define QOS_CHANGE_DEL 0xFC | |
332 | #define QOS_ADD 0xFD | |
333 | #define QOS_REPORT 0xFE | |
334 | ||
335 | void gdm_recv_qos_hci_packet(void *nic_ptr, u8 *buf, int size) | |
336 | { | |
337 | struct nic *nic = nic_ptr; | |
338 | u32 i, SFID, index, pos; | |
339 | u8 subCmdEvt; | |
247e9cff SA |
340 | struct qos_cb_s *qcb = &nic->qos; |
341 | struct qos_entry_s *entry, *n; | |
342 | struct list_head send_list; | |
343 | struct list_head free_list; | |
344 | unsigned long flags; | |
345 | ||
346 | subCmdEvt = (u8)buf[4]; | |
347 | ||
348 | if (subCmdEvt == QOS_REPORT) { | |
247e9cff SA |
349 | spin_lock_irqsave(&qcb->qos_lock, flags); |
350 | for (i = 0; i < qcb->qos_list_cnt; i++) { | |
351 | SFID = ((buf[(i*5)+6]<<24)&0xff000000); | |
352 | SFID += ((buf[(i*5)+7]<<16)&0xff0000); | |
353 | SFID += ((buf[(i*5)+8]<<8)&0xff00); | |
354 | SFID += (buf[(i*5)+9]); | |
355 | index = get_csr(qcb, SFID, 0); | |
356 | if (index == -1) { | |
357 | spin_unlock_irqrestore(&qcb->qos_lock, flags); | |
2d839022 | 358 | netdev_err(nic->netdev, "QoS ERROR: No SF\n"); |
247e9cff SA |
359 | return; |
360 | } | |
13b2663c | 361 | qcb->csr[index].qos_buf_count = buf[(i*5)+10]; |
247e9cff SA |
362 | } |
363 | ||
364 | extract_qos_list(nic, &send_list); | |
365 | spin_unlock_irqrestore(&qcb->qos_lock, flags); | |
366 | send_qos_list(nic, &send_list); | |
367 | return; | |
d3852910 | 368 | } |
247e9cff | 369 | |
d3852910 PH |
370 | /* subCmdEvt == QOS_ADD || subCmdEvt == QOS_CHANG_DEL */ |
371 | pos = 6; | |
372 | SFID = ((buf[pos++]<<24)&0xff000000); | |
373 | SFID += ((buf[pos++]<<16)&0xff0000); | |
374 | SFID += ((buf[pos++]<<8)&0xff00); | |
375 | SFID += (buf[pos++]); | |
376 | ||
377 | index = get_csr(qcb, SFID, 1); | |
378 | if (index == -1) { | |
379 | netdev_err(nic->netdev, | |
380 | "QoS ERROR: csr Update Error / Wrong index (%d) \n", | |
381 | index); | |
382 | return; | |
383 | } | |
384 | ||
385 | if (subCmdEvt == QOS_ADD) { | |
2d839022 YT |
386 | netdev_dbg(nic->netdev, "QOS_ADD SFID = 0x%x, index=%d\n", |
387 | SFID, index); | |
247e9cff SA |
388 | |
389 | spin_lock_irqsave(&qcb->qos_lock, flags); | |
390 | qcb->csr[index].SFID = SFID; | |
13b2663c ML |
391 | qcb->csr[index].classifier_rule_en = ((buf[pos++]<<8)&0xff00); |
392 | qcb->csr[index].classifier_rule_en += buf[pos++]; | |
393 | if (qcb->csr[index].classifier_rule_en == 0) | |
247e9cff | 394 | qcb->qos_null_idx = index; |
13b2663c ML |
395 | qcb->csr[index].ip2s_mask = buf[pos++]; |
396 | qcb->csr[index].ip2s_lo = buf[pos++]; | |
397 | qcb->csr[index].ip2s_hi = buf[pos++]; | |
398 | qcb->csr[index].protocol = buf[pos++]; | |
399 | qcb->csr[index].ipsrc_addrmask[0] = buf[pos++]; | |
400 | qcb->csr[index].ipsrc_addrmask[1] = buf[pos++]; | |
401 | qcb->csr[index].ipsrc_addrmask[2] = buf[pos++]; | |
402 | qcb->csr[index].ipsrc_addrmask[3] = buf[pos++]; | |
403 | qcb->csr[index].ipsrc_addr[0] = buf[pos++]; | |
404 | qcb->csr[index].ipsrc_addr[1] = buf[pos++]; | |
405 | qcb->csr[index].ipsrc_addr[2] = buf[pos++]; | |
406 | qcb->csr[index].ipsrc_addr[3] = buf[pos++]; | |
407 | qcb->csr[index].ipdst_addrmask[0] = buf[pos++]; | |
408 | qcb->csr[index].ipdst_addrmask[1] = buf[pos++]; | |
409 | qcb->csr[index].ipdst_addrmask[2] = buf[pos++]; | |
410 | qcb->csr[index].ipdst_addrmask[3] = buf[pos++]; | |
411 | qcb->csr[index].ipdst_addr[0] = buf[pos++]; | |
412 | qcb->csr[index].ipdst_addr[1] = buf[pos++]; | |
413 | qcb->csr[index].ipdst_addr[2] = buf[pos++]; | |
414 | qcb->csr[index].ipdst_addr[3] = buf[pos++]; | |
415 | qcb->csr[index].srcport_lo = ((buf[pos++]<<8)&0xff00); | |
416 | qcb->csr[index].srcport_lo += buf[pos++]; | |
417 | qcb->csr[index].srcport_hi = ((buf[pos++]<<8)&0xff00); | |
418 | qcb->csr[index].srcport_hi += buf[pos++]; | |
419 | qcb->csr[index].dstport_lo = ((buf[pos++]<<8)&0xff00); | |
420 | qcb->csr[index].dstport_lo += buf[pos++]; | |
421 | qcb->csr[index].dstport_hi = ((buf[pos++]<<8)&0xff00); | |
422 | qcb->csr[index].dstport_hi += buf[pos++]; | |
247e9cff SA |
423 | |
424 | qcb->qos_limit_size = 254/qcb->qos_list_cnt; | |
425 | spin_unlock_irqrestore(&qcb->qos_lock, flags); | |
426 | } else if (subCmdEvt == QOS_CHANGE_DEL) { | |
2d839022 YT |
427 | netdev_dbg(nic->netdev, "QOS_CHANGE_DEL SFID = 0x%x, index=%d\n", |
428 | SFID, index); | |
247e9cff SA |
429 | |
430 | INIT_LIST_HEAD(&free_list); | |
431 | ||
432 | spin_lock_irqsave(&qcb->qos_lock, flags); | |
13b2663c | 433 | qcb->csr[index].enabled = 0; |
247e9cff SA |
434 | qcb->qos_list_cnt--; |
435 | qcb->qos_limit_size = 254/qcb->qos_list_cnt; | |
436 | ||
437 | list_for_each_entry_safe(entry, n, &qcb->qos_list[index], | |
438 | list) { | |
439 | list_move_tail(&entry->list, &free_list); | |
440 | } | |
441 | spin_unlock_irqrestore(&qcb->qos_lock, flags); | |
442 | free_qos_entry_list(&free_list); | |
443 | } | |
444 | } |