2 * Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
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.
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.
14 #include <linux/version.h>
15 #include <linux/etherdevice.h>
16 #include <asm/byteorder.h>
19 #include <linux/tcp.h>
20 #include <linux/if_ether.h>
22 #include "gdm_wimax.h"
26 #define B2H(x) __be16_to_cpu(x)
29 #define dprintk(fmt, args ...) printk(KERN_DEBUG "[QoS] " fmt, ## args)
31 #define wprintk(fmt, args ...) \
32 printk(KERN_WARNING "[QoS WARNING] " fmt, ## args)
34 #define eprintk(fmt, args ...) printk(KERN_ERR "[QoS ERROR] " fmt, ## args)
37 #define MAX_FREE_LIST_CNT 32
39 struct list_head head;
44 static void init_qos_entry_list(void)
46 qos_free_list.cnt = 0;
47 INIT_LIST_HEAD(&qos_free_list.head);
48 spin_lock_init(&qos_free_list.lock);
51 static void *alloc_qos_entry(void)
53 struct qos_entry_s *entry;
56 spin_lock_irqsave(&qos_free_list.lock, flags);
57 if (qos_free_list.cnt) {
58 entry = list_entry(qos_free_list.head.prev, struct qos_entry_s,
60 list_del(&entry->list);
62 spin_unlock_irqrestore(&qos_free_list.lock, flags);
65 spin_unlock_irqrestore(&qos_free_list.lock, flags);
67 entry = kmalloc(sizeof(struct qos_entry_s), GFP_ATOMIC);
71 static void free_qos_entry(void *entry)
73 struct qos_entry_s *qentry = (struct qos_entry_s *) entry;
76 spin_lock_irqsave(&qos_free_list.lock, flags);
77 if (qos_free_list.cnt < MAX_FREE_LIST_CNT) {
78 list_add(&qentry->list, &qos_free_list.head);
80 spin_unlock_irqrestore(&qos_free_list.lock, flags);
83 spin_unlock_irqrestore(&qos_free_list.lock, flags);
88 static void free_qos_entry_list(struct list_head *free_list)
90 struct qos_entry_s *entry, *n;
93 list_for_each_entry_safe(entry, n, free_list, list) {
94 list_del(&entry->list);
99 dprintk("%s: total_free_cnt=%d\n", __func__, total_free);
102 void gdm_qos_init(void *nic_ptr)
104 struct nic *nic = nic_ptr;
105 struct qos_cb_s *qcb = &nic->qos;
108 for (i = 0 ; i < QOS_MAX; i++) {
109 INIT_LIST_HEAD(&qcb->qos_list[i]);
110 qcb->csr[i].QoSBufCount = 0;
111 qcb->csr[i].Enabled = 0;
114 qcb->qos_list_cnt = 0;
115 qcb->qos_null_idx = QOS_MAX-1;
116 qcb->qos_limit_size = 255;
118 spin_lock_init(&qcb->qos_lock);
120 init_qos_entry_list();
123 void gdm_qos_release_list(void *nic_ptr)
125 struct nic *nic = nic_ptr;
126 struct qos_cb_s *qcb = &nic->qos;
128 struct qos_entry_s *entry, *n;
129 struct list_head free_list;
132 INIT_LIST_HEAD(&free_list);
134 spin_lock_irqsave(&qcb->qos_lock, flags);
136 for (i = 0; i < QOS_MAX; i++) {
137 qcb->csr[i].QoSBufCount = 0;
138 qcb->csr[i].Enabled = 0;
141 qcb->qos_list_cnt = 0;
142 qcb->qos_null_idx = QOS_MAX-1;
144 for (i = 0; i < QOS_MAX; i++) {
145 list_for_each_entry_safe(entry, n, &qcb->qos_list[i], list) {
146 list_move_tail(&entry->list, &free_list);
149 spin_unlock_irqrestore(&qcb->qos_lock, flags);
150 free_qos_entry_list(&free_list);
153 static u32 chk_ipv4_rule(struct gdm_wimax_csr_s *csr, u8 *Stream, u8 *port)
157 if (csr->ClassifierRuleEnable&IPTYPEOFSERVICE) {
158 if (((Stream[1] & csr->IPToSMask) < csr->IPToSLow) ||
159 ((Stream[1] & csr->IPToSMask) > csr->IPToSHigh))
163 if (csr->ClassifierRuleEnable&PROTOCOL) {
164 if (Stream[9] != csr->Protocol)
168 if (csr->ClassifierRuleEnable&IPMASKEDSRCADDRESS) {
169 for (i = 0; i < 4; i++) {
170 if ((Stream[12 + i] & csr->IPSrcAddrMask[i]) !=
171 (csr->IPSrcAddr[i] & csr->IPSrcAddrMask[i]))
176 if (csr->ClassifierRuleEnable&IPMASKEDDSTADDRESS) {
177 for (i = 0; i < 4; i++) {
178 if ((Stream[16 + i] & csr->IPDstAddrMask[i]) !=
179 (csr->IPDstAddr[i] & csr->IPDstAddrMask[i]))
184 if (csr->ClassifierRuleEnable&PROTOCOLSRCPORTRANGE) {
185 i = ((port[0]<<8)&0xff00)+port[1];
186 if ((i < csr->SrcPortLow) || (i > csr->SrcPortHigh))
190 if (csr->ClassifierRuleEnable&PROTOCOLDSTPORTRANGE) {
191 i = ((port[2]<<8)&0xff00)+port[3];
192 if ((i < csr->DstPortLow) || (i > csr->DstPortHigh))
199 static u32 get_qos_index(struct nic *nic, u8* iph, u8* tcpudph)
201 u32 IP_Ver, Header_Len, i;
202 struct qos_cb_s *qcb = &nic->qos;
204 if (iph == NULL || tcpudph == NULL)
207 IP_Ver = (iph[0]>>4)&0xf;
208 Header_Len = iph[0]&0xf;
211 for (i = 0; i < QOS_MAX; i++) {
212 if (qcb->csr[i].Enabled) {
213 if (qcb->csr[i].ClassifierRuleEnable) {
214 if (chk_ipv4_rule(&qcb->csr[i], iph,
225 static u32 extract_qos_list(struct nic *nic, struct list_head *head)
227 struct qos_cb_s *qcb = &nic->qos;
228 struct qos_entry_s *entry;
231 INIT_LIST_HEAD(head);
233 for (i = 0; i < QOS_MAX; i++) {
234 if (qcb->csr[i].Enabled) {
235 if (qcb->csr[i].QoSBufCount < qcb->qos_limit_size) {
236 if (!list_empty(&qcb->qos_list[i])) {
238 qcb->qos_list[i].prev,
239 struct qos_entry_s, list);
240 list_move_tail(&entry->list, head);
241 qcb->csr[i].QoSBufCount++;
243 if (!list_empty(&qcb->qos_list[i]))
244 wprintk("QoS Index(%d) "
254 static void send_qos_list(struct nic *nic, struct list_head *head)
256 struct qos_entry_s *entry, *n;
258 list_for_each_entry_safe(entry, n, head, list) {
259 list_del(&entry->list);
260 free_qos_entry(entry);
261 gdm_wimax_send_tx(entry->skb, entry->dev);
265 int gdm_qos_send_hci_pkt(struct sk_buff *skb, struct net_device *dev)
267 struct nic *nic = netdev_priv(dev);
269 struct qos_cb_s *qcb = &nic->qos;
271 struct ethhdr *ethh = (struct ethhdr *) (skb->data + HCI_HEADER_SIZE);
272 struct iphdr *iph = (struct iphdr *) ((char *) ethh + ETH_HLEN);
274 struct qos_entry_s *entry = NULL;
275 struct list_head send_list;
278 tcph = (struct tcphdr *) iph + iph->ihl*4;
280 if (B2H(ethh->h_proto) == ETH_P_IP) {
281 if (qcb->qos_list_cnt && !qos_free_list.cnt) {
282 entry = alloc_qos_entry();
285 dprintk("qcb->qos_list_cnt=%d\n", qcb->qos_list_cnt);
288 spin_lock_irqsave(&qcb->qos_lock, flags);
289 if (qcb->qos_list_cnt) {
290 index = get_qos_index(nic, (u8 *)iph, (u8 *) tcph);
292 index = qcb->qos_null_idx;
295 entry = alloc_qos_entry();
300 list_add_tail(&entry->list, &qcb->qos_list[index]);
301 extract_qos_list(nic, &send_list);
302 spin_unlock_irqrestore(&qcb->qos_lock, flags);
303 send_qos_list(nic, &send_list);
306 spin_unlock_irqrestore(&qcb->qos_lock, flags);
308 free_qos_entry(entry);
311 ret = gdm_wimax_send_tx(skb, dev);
316 static u32 get_csr(struct qos_cb_s *qcb, u32 SFID, int mode)
320 for (i = 0; i < qcb->qos_list_cnt; i++) {
321 if (qcb->csr[i].SFID == SFID)
326 for (i = 0; i < QOS_MAX; i++) {
327 if (qcb->csr[i].Enabled == 0) {
328 qcb->csr[i].Enabled = 1;
337 #define QOS_CHANGE_DEL 0xFC
339 #define QOS_REPORT 0xFE
341 void gdm_recv_qos_hci_packet(void *nic_ptr, u8 *buf, int size)
343 struct nic *nic = nic_ptr;
344 u32 i, SFID, index, pos;
347 struct qos_cb_s *qcb = &nic->qos;
348 struct qos_entry_s *entry, *n;
349 struct list_head send_list;
350 struct list_head free_list;
353 subCmdEvt = (u8)buf[4];
355 if (subCmdEvt == QOS_REPORT) {
358 spin_lock_irqsave(&qcb->qos_lock, flags);
359 for (i = 0; i < qcb->qos_list_cnt; i++) {
360 SFID = ((buf[(i*5)+6]<<24)&0xff000000);
361 SFID += ((buf[(i*5)+7]<<16)&0xff0000);
362 SFID += ((buf[(i*5)+8]<<8)&0xff00);
363 SFID += (buf[(i*5)+9]);
364 index = get_csr(qcb, SFID, 0);
366 spin_unlock_irqrestore(&qcb->qos_lock, flags);
367 eprintk("QoS ERROR: No SF\n");
370 qcb->csr[index].QoSBufCount = buf[(i*5)+10];
373 extract_qos_list(nic, &send_list);
374 spin_unlock_irqrestore(&qcb->qos_lock, flags);
375 send_qos_list(nic, &send_list);
377 } else if (subCmdEvt == QOS_ADD) {
379 len = (u8)buf[pos++];
381 SFID = ((buf[pos++]<<24)&0xff000000);
382 SFID += ((buf[pos++]<<16)&0xff0000);
383 SFID += ((buf[pos++]<<8)&0xff00);
384 SFID += (buf[pos++]);
386 index = get_csr(qcb, SFID, 1);
388 eprintk("QoS ERROR: csr Update Error\n");
392 dprintk("QOS_ADD SFID = 0x%x, index=%d\n", SFID, index);
394 spin_lock_irqsave(&qcb->qos_lock, flags);
395 qcb->csr[index].SFID = SFID;
396 qcb->csr[index].ClassifierRuleEnable = ((buf[pos++]<<8)&0xff00);
397 qcb->csr[index].ClassifierRuleEnable += buf[pos++];
398 if (qcb->csr[index].ClassifierRuleEnable == 0)
399 qcb->qos_null_idx = index;
400 qcb->csr[index].IPToSMask = buf[pos++];
401 qcb->csr[index].IPToSLow = buf[pos++];
402 qcb->csr[index].IPToSHigh = buf[pos++];
403 qcb->csr[index].Protocol = buf[pos++];
404 qcb->csr[index].IPSrcAddrMask[0] = buf[pos++];
405 qcb->csr[index].IPSrcAddrMask[1] = buf[pos++];
406 qcb->csr[index].IPSrcAddrMask[2] = buf[pos++];
407 qcb->csr[index].IPSrcAddrMask[3] = buf[pos++];
408 qcb->csr[index].IPSrcAddr[0] = buf[pos++];
409 qcb->csr[index].IPSrcAddr[1] = buf[pos++];
410 qcb->csr[index].IPSrcAddr[2] = buf[pos++];
411 qcb->csr[index].IPSrcAddr[3] = buf[pos++];
412 qcb->csr[index].IPDstAddrMask[0] = buf[pos++];
413 qcb->csr[index].IPDstAddrMask[1] = buf[pos++];
414 qcb->csr[index].IPDstAddrMask[2] = buf[pos++];
415 qcb->csr[index].IPDstAddrMask[3] = buf[pos++];
416 qcb->csr[index].IPDstAddr[0] = buf[pos++];
417 qcb->csr[index].IPDstAddr[1] = buf[pos++];
418 qcb->csr[index].IPDstAddr[2] = buf[pos++];
419 qcb->csr[index].IPDstAddr[3] = buf[pos++];
420 qcb->csr[index].SrcPortLow = ((buf[pos++]<<8)&0xff00);
421 qcb->csr[index].SrcPortLow += buf[pos++];
422 qcb->csr[index].SrcPortHigh = ((buf[pos++]<<8)&0xff00);
423 qcb->csr[index].SrcPortHigh += buf[pos++];
424 qcb->csr[index].DstPortLow = ((buf[pos++]<<8)&0xff00);
425 qcb->csr[index].DstPortLow += buf[pos++];
426 qcb->csr[index].DstPortHigh = ((buf[pos++]<<8)&0xff00);
427 qcb->csr[index].DstPortHigh += buf[pos++];
429 qcb->qos_limit_size = 254/qcb->qos_list_cnt;
430 spin_unlock_irqrestore(&qcb->qos_lock, flags);
431 } else if (subCmdEvt == QOS_CHANGE_DEL) {
433 len = (u8)buf[pos++];
434 SFID = ((buf[pos++]<<24)&0xff000000);
435 SFID += ((buf[pos++]<<16)&0xff0000);
436 SFID += ((buf[pos++]<<8)&0xff00);
437 SFID += (buf[pos++]);
438 index = get_csr(qcb, SFID, 1);
440 eprintk("QoS ERROR: Wrong index(%d)\n", index);
444 dprintk("QOS_CHANGE_DEL SFID = 0x%x, index=%d\n", SFID, index);
446 INIT_LIST_HEAD(&free_list);
448 spin_lock_irqsave(&qcb->qos_lock, flags);
449 qcb->csr[index].Enabled = 0;
451 qcb->qos_limit_size = 254/qcb->qos_list_cnt;
453 list_for_each_entry_safe(entry, n, &qcb->qos_list[index],
455 list_move_tail(&entry->list, &free_list);
457 spin_unlock_irqrestore(&qcb->qos_lock, flags);
458 free_qos_entry_list(&free_list);