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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
16 #include <linux/etherdevice.h>
17 #include <asm/byteorder.h>
20 #include <linux/tcp.h>
21 #include <linux/if_ether.h>
23 #include "gdm_wimax.h"
27 #define MAX_FREE_LIST_CNT 32
29 struct list_head head;
34 static void init_qos_entry_list(void)
36 qos_free_list.cnt = 0;
37 INIT_LIST_HEAD(&qos_free_list.head);
38 spin_lock_init(&qos_free_list.lock);
41 static void *alloc_qos_entry(void)
43 struct qos_entry_s *entry;
46 spin_lock_irqsave(&qos_free_list.lock, flags);
47 if (qos_free_list.cnt) {
48 entry = list_entry(qos_free_list.head.prev, struct qos_entry_s,
50 list_del(&entry->list);
52 spin_unlock_irqrestore(&qos_free_list.lock, flags);
55 spin_unlock_irqrestore(&qos_free_list.lock, flags);
57 return kmalloc(sizeof(*entry), GFP_ATOMIC);
60 static void free_qos_entry(void *entry)
62 struct qos_entry_s *qentry = (struct qos_entry_s *)entry;
65 spin_lock_irqsave(&qos_free_list.lock, flags);
66 if (qos_free_list.cnt < MAX_FREE_LIST_CNT) {
67 list_add(&qentry->list, &qos_free_list.head);
69 spin_unlock_irqrestore(&qos_free_list.lock, flags);
72 spin_unlock_irqrestore(&qos_free_list.lock, flags);
77 static void free_qos_entry_list(struct list_head *free_list)
79 struct qos_entry_s *entry, *n;
82 list_for_each_entry_safe(entry, n, free_list, list) {
83 list_del(&entry->list);
88 pr_debug("%s: total_free_cnt=%d\n", __func__, total_free);
91 void gdm_qos_init(void *nic_ptr)
93 struct nic *nic = nic_ptr;
94 struct qos_cb_s *qcb = &nic->qos;
97 for (i = 0; i < QOS_MAX; i++) {
98 INIT_LIST_HEAD(&qcb->qos_list[i]);
99 qcb->csr[i].qos_buf_count = 0;
100 qcb->csr[i].enabled = false;
103 qcb->qos_list_cnt = 0;
104 qcb->qos_null_idx = QOS_MAX-1;
105 qcb->qos_limit_size = 255;
107 spin_lock_init(&qcb->qos_lock);
109 init_qos_entry_list();
112 void gdm_qos_release_list(void *nic_ptr)
114 struct nic *nic = nic_ptr;
115 struct qos_cb_s *qcb = &nic->qos;
117 struct qos_entry_s *entry, *n;
118 struct list_head free_list;
121 INIT_LIST_HEAD(&free_list);
123 spin_lock_irqsave(&qcb->qos_lock, flags);
125 for (i = 0; i < QOS_MAX; i++) {
126 qcb->csr[i].qos_buf_count = 0;
127 qcb->csr[i].enabled = false;
130 qcb->qos_list_cnt = 0;
131 qcb->qos_null_idx = QOS_MAX-1;
133 for (i = 0; i < QOS_MAX; i++) {
134 list_for_each_entry_safe(entry, n, &qcb->qos_list[i], list) {
135 list_move_tail(&entry->list, &free_list);
138 spin_unlock_irqrestore(&qcb->qos_lock, flags);
139 free_qos_entry_list(&free_list);
142 static int chk_ipv4_rule(struct gdm_wimax_csr_s *csr, u8 *stream, u8 *port)
146 if (csr->classifier_rule_en&IPTYPEOFSERVICE) {
147 if (((stream[1] & csr->ip2s_mask) < csr->ip2s_lo) ||
148 ((stream[1] & csr->ip2s_mask) > csr->ip2s_hi))
152 if (csr->classifier_rule_en&PROTOCOL) {
153 if (stream[9] != csr->protocol)
157 if (csr->classifier_rule_en&IPMASKEDSRCADDRESS) {
158 for (i = 0; i < 4; i++) {
159 if ((stream[12 + i] & csr->ipsrc_addrmask[i]) !=
160 (csr->ipsrc_addr[i] & csr->ipsrc_addrmask[i]))
165 if (csr->classifier_rule_en&IPMASKEDDSTADDRESS) {
166 for (i = 0; i < 4; i++) {
167 if ((stream[16 + i] & csr->ipdst_addrmask[i]) !=
168 (csr->ipdst_addr[i] & csr->ipdst_addrmask[i]))
173 if (csr->classifier_rule_en&PROTOCOLSRCPORTRANGE) {
174 i = ((port[0]<<8)&0xff00)+port[1];
175 if ((i < csr->srcport_lo) || (i > csr->srcport_hi))
179 if (csr->classifier_rule_en&PROTOCOLDSTPORTRANGE) {
180 i = ((port[2]<<8)&0xff00)+port[3];
181 if ((i < csr->dstport_lo) || (i > csr->dstport_hi))
188 static int get_qos_index(struct nic *nic, u8 *iph, u8 *tcpudph)
191 struct qos_cb_s *qcb = &nic->qos;
193 if (iph == NULL || tcpudph == NULL)
196 ip_ver = (iph[0]>>4)&0xf;
201 for (i = 0; i < QOS_MAX; i++) {
202 if (!qcb->csr[i].enabled)
204 if (!qcb->csr[i].classifier_rule_en)
206 if (chk_ipv4_rule(&qcb->csr[i], iph, tcpudph) == 0)
213 static void extract_qos_list(struct nic *nic, struct list_head *head)
215 struct qos_cb_s *qcb = &nic->qos;
216 struct qos_entry_s *entry;
219 INIT_LIST_HEAD(head);
221 for (i = 0; i < QOS_MAX; i++) {
222 if (!qcb->csr[i].enabled)
224 if (qcb->csr[i].qos_buf_count >= qcb->qos_limit_size)
226 if (list_empty(&qcb->qos_list[i]))
229 entry = list_entry(qcb->qos_list[i].prev, struct qos_entry_s,
232 list_move_tail(&entry->list, head);
233 qcb->csr[i].qos_buf_count++;
235 if (!list_empty(&qcb->qos_list[i]))
236 netdev_warn(nic->netdev, "Index(%d) is piled!!\n", i);
240 static void send_qos_list(struct nic *nic, struct list_head *head)
242 struct qos_entry_s *entry, *n;
244 list_for_each_entry_safe(entry, n, head, list) {
245 list_del(&entry->list);
246 gdm_wimax_send_tx(entry->skb, entry->dev);
247 free_qos_entry(entry);
251 int gdm_qos_send_hci_pkt(struct sk_buff *skb, struct net_device *dev)
253 struct nic *nic = netdev_priv(dev);
255 struct qos_cb_s *qcb = &nic->qos;
257 struct ethhdr *ethh = (struct ethhdr *)(skb->data + HCI_HEADER_SIZE);
258 struct iphdr *iph = (struct iphdr *)((char *)ethh + ETH_HLEN);
260 struct qos_entry_s *entry = NULL;
261 struct list_head send_list;
264 tcph = (struct tcphdr *)iph + iph->ihl*4;
266 if (ethh->h_proto == cpu_to_be16(ETH_P_IP)) {
267 if (qcb->qos_list_cnt && !qos_free_list.cnt) {
268 entry = alloc_qos_entry();
271 netdev_dbg(dev, "qcb->qos_list_cnt=%d\n",
275 spin_lock_irqsave(&qcb->qos_lock, flags);
276 if (qcb->qos_list_cnt) {
277 index = get_qos_index(nic, (u8 *)iph, (u8 *)tcph);
279 index = qcb->qos_null_idx;
282 entry = alloc_qos_entry();
287 list_add_tail(&entry->list, &qcb->qos_list[index]);
288 extract_qos_list(nic, &send_list);
289 spin_unlock_irqrestore(&qcb->qos_lock, flags);
290 send_qos_list(nic, &send_list);
293 spin_unlock_irqrestore(&qcb->qos_lock, flags);
295 free_qos_entry(entry);
298 ret = gdm_wimax_send_tx(skb, dev);
303 static int get_csr(struct qos_cb_s *qcb, u32 sfid, int mode)
307 for (i = 0; i < qcb->qos_list_cnt; i++) {
308 if (qcb->csr[i].sfid == sfid)
313 for (i = 0; i < QOS_MAX; i++) {
314 if (!qcb->csr[i].enabled) {
315 qcb->csr[i].enabled = true;
324 #define QOS_CHANGE_DEL 0xFC
326 #define QOS_REPORT 0xFE
328 void gdm_recv_qos_hci_packet(void *nic_ptr, u8 *buf, int size)
330 struct nic *nic = nic_ptr;
334 struct qos_cb_s *qcb = &nic->qos;
335 struct qos_entry_s *entry, *n;
336 struct list_head send_list;
337 struct list_head free_list;
340 sub_cmd_evt = (u8)buf[4];
342 if (sub_cmd_evt == QOS_REPORT) {
343 spin_lock_irqsave(&qcb->qos_lock, flags);
344 for (i = 0; i < qcb->qos_list_cnt; i++) {
345 sfid = ((buf[(i*5)+6]<<24)&0xff000000);
346 sfid += ((buf[(i*5)+7]<<16)&0xff0000);
347 sfid += ((buf[(i*5)+8]<<8)&0xff00);
348 sfid += (buf[(i*5)+9]);
349 index = get_csr(qcb, sfid, 0);
351 spin_unlock_irqrestore(&qcb->qos_lock, flags);
352 netdev_err(nic->netdev, "QoS ERROR: No SF\n");
355 qcb->csr[index].qos_buf_count = buf[(i*5)+10];
358 extract_qos_list(nic, &send_list);
359 spin_unlock_irqrestore(&qcb->qos_lock, flags);
360 send_qos_list(nic, &send_list);
364 /* sub_cmd_evt == QOS_ADD || sub_cmd_evt == QOS_CHANG_DEL */
366 sfid = ((buf[pos++]<<24)&0xff000000);
367 sfid += ((buf[pos++]<<16)&0xff0000);
368 sfid += ((buf[pos++]<<8)&0xff00);
369 sfid += (buf[pos++]);
371 index = get_csr(qcb, sfid, 1);
373 netdev_err(nic->netdev,
374 "QoS ERROR: csr Update Error / Wrong index (%d)\n",
379 if (sub_cmd_evt == QOS_ADD) {
380 netdev_dbg(nic->netdev, "QOS_ADD SFID = 0x%x, index=%d\n",
383 spin_lock_irqsave(&qcb->qos_lock, flags);
384 qcb->csr[index].sfid = sfid;
385 qcb->csr[index].classifier_rule_en = ((buf[pos++]<<8)&0xff00);
386 qcb->csr[index].classifier_rule_en += buf[pos++];
387 if (qcb->csr[index].classifier_rule_en == 0)
388 qcb->qos_null_idx = index;
389 qcb->csr[index].ip2s_mask = buf[pos++];
390 qcb->csr[index].ip2s_lo = buf[pos++];
391 qcb->csr[index].ip2s_hi = buf[pos++];
392 qcb->csr[index].protocol = buf[pos++];
393 qcb->csr[index].ipsrc_addrmask[0] = buf[pos++];
394 qcb->csr[index].ipsrc_addrmask[1] = buf[pos++];
395 qcb->csr[index].ipsrc_addrmask[2] = buf[pos++];
396 qcb->csr[index].ipsrc_addrmask[3] = buf[pos++];
397 qcb->csr[index].ipsrc_addr[0] = buf[pos++];
398 qcb->csr[index].ipsrc_addr[1] = buf[pos++];
399 qcb->csr[index].ipsrc_addr[2] = buf[pos++];
400 qcb->csr[index].ipsrc_addr[3] = buf[pos++];
401 qcb->csr[index].ipdst_addrmask[0] = buf[pos++];
402 qcb->csr[index].ipdst_addrmask[1] = buf[pos++];
403 qcb->csr[index].ipdst_addrmask[2] = buf[pos++];
404 qcb->csr[index].ipdst_addrmask[3] = buf[pos++];
405 qcb->csr[index].ipdst_addr[0] = buf[pos++];
406 qcb->csr[index].ipdst_addr[1] = buf[pos++];
407 qcb->csr[index].ipdst_addr[2] = buf[pos++];
408 qcb->csr[index].ipdst_addr[3] = buf[pos++];
409 qcb->csr[index].srcport_lo = ((buf[pos++]<<8)&0xff00);
410 qcb->csr[index].srcport_lo += buf[pos++];
411 qcb->csr[index].srcport_hi = ((buf[pos++]<<8)&0xff00);
412 qcb->csr[index].srcport_hi += buf[pos++];
413 qcb->csr[index].dstport_lo = ((buf[pos++]<<8)&0xff00);
414 qcb->csr[index].dstport_lo += buf[pos++];
415 qcb->csr[index].dstport_hi = ((buf[pos++]<<8)&0xff00);
416 qcb->csr[index].dstport_hi += buf[pos++];
418 qcb->qos_limit_size = 254/qcb->qos_list_cnt;
419 spin_unlock_irqrestore(&qcb->qos_lock, flags);
420 } else if (sub_cmd_evt == QOS_CHANGE_DEL) {
421 netdev_dbg(nic->netdev, "QOS_CHANGE_DEL SFID = 0x%x, index=%d\n",
424 INIT_LIST_HEAD(&free_list);
426 spin_lock_irqsave(&qcb->qos_lock, flags);
427 qcb->csr[index].enabled = false;
429 qcb->qos_limit_size = 254/qcb->qos_list_cnt;
431 list_for_each_entry_safe(entry, n, &qcb->qos_list[index],
433 list_move_tail(&entry->list, &free_list);
435 spin_unlock_irqrestore(&qcb->qos_lock, flags);
436 free_qos_entry_list(&free_list);