--- /dev/null
+/*
+ * Copyright (c) 2012 GCT Semiconductor, Inc. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/etherdevice.h>
+#include <asm/byteorder.h>
+
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/if_ether.h>
+
+#include "gdm_wimax.h"
+#include "hci.h"
+#include "gdm_qos.h"
+
+#define MAX_FREE_LIST_CNT 32
+static struct {
+ struct list_head head;
+ int cnt;
+ spinlock_t lock;
+} qos_free_list;
+
+static void init_qos_entry_list(void)
+{
+ qos_free_list.cnt = 0;
+ INIT_LIST_HEAD(&qos_free_list.head);
+ spin_lock_init(&qos_free_list.lock);
+}
+
+static void *alloc_qos_entry(void)
+{
+ struct qos_entry_s *entry;
+ unsigned long flags;
+
+ spin_lock_irqsave(&qos_free_list.lock, flags);
+ if (qos_free_list.cnt) {
+ entry = list_entry(qos_free_list.head.prev, struct qos_entry_s,
+ list);
+ list_del(&entry->list);
+ qos_free_list.cnt--;
+ spin_unlock_irqrestore(&qos_free_list.lock, flags);
+ return entry;
+ }
+ spin_unlock_irqrestore(&qos_free_list.lock, flags);
+
+ return kmalloc(sizeof(*entry), GFP_ATOMIC);
+}
+
+static void free_qos_entry(void *entry)
+{
+ struct qos_entry_s *qentry = (struct qos_entry_s *)entry;
+ unsigned long flags;
+
+ spin_lock_irqsave(&qos_free_list.lock, flags);
+ if (qos_free_list.cnt < MAX_FREE_LIST_CNT) {
+ list_add(&qentry->list, &qos_free_list.head);
+ qos_free_list.cnt++;
+ spin_unlock_irqrestore(&qos_free_list.lock, flags);
+ return;
+ }
+ spin_unlock_irqrestore(&qos_free_list.lock, flags);
+
+ kfree(entry);
+}
+
+static void free_qos_entry_list(struct list_head *free_list)
+{
+ struct qos_entry_s *entry, *n;
+ int total_free = 0;
+
+ list_for_each_entry_safe(entry, n, free_list, list) {
+ list_del(&entry->list);
+ kfree(entry);
+ total_free++;
+ }
+
+ pr_debug("%s: total_free_cnt=%d\n", __func__, total_free);
+}
+
+void gdm_qos_init(void *nic_ptr)
+{
+ struct nic *nic = nic_ptr;
+ struct qos_cb_s *qcb = &nic->qos;
+ int i;
+
+ for (i = 0; i < QOS_MAX; i++) {
+ INIT_LIST_HEAD(&qcb->qos_list[i]);
+ qcb->csr[i].qos_buf_count = 0;
+ qcb->csr[i].enabled = false;
+ }
+
+ qcb->qos_list_cnt = 0;
+ qcb->qos_null_idx = QOS_MAX-1;
+ qcb->qos_limit_size = 255;
+
+ spin_lock_init(&qcb->qos_lock);
+
+ init_qos_entry_list();
+}
+
+void gdm_qos_release_list(void *nic_ptr)
+{
+ struct nic *nic = nic_ptr;
+ struct qos_cb_s *qcb = &nic->qos;
+ unsigned long flags;
+ struct qos_entry_s *entry, *n;
+ struct list_head free_list;
+ int i;
+
+ INIT_LIST_HEAD(&free_list);
+
+ spin_lock_irqsave(&qcb->qos_lock, flags);
+
+ for (i = 0; i < QOS_MAX; i++) {
+ qcb->csr[i].qos_buf_count = 0;
+ qcb->csr[i].enabled = false;
+ }
+
+ qcb->qos_list_cnt = 0;
+ qcb->qos_null_idx = QOS_MAX-1;
+
+ for (i = 0; i < QOS_MAX; i++) {
+ list_for_each_entry_safe(entry, n, &qcb->qos_list[i], list) {
+ list_move_tail(&entry->list, &free_list);
+ }
+ }
+ spin_unlock_irqrestore(&qcb->qos_lock, flags);
+ free_qos_entry_list(&free_list);
+}
+
+static int chk_ipv4_rule(struct gdm_wimax_csr_s *csr, u8 *stream, u8 *port)
+{
+ int i;
+
+ if (csr->classifier_rule_en&IPTYPEOFSERVICE) {
+ if (((stream[1] & csr->ip2s_mask) < csr->ip2s_lo) ||
+ ((stream[1] & csr->ip2s_mask) > csr->ip2s_hi))
+ return 1;
+ }
+
+ if (csr->classifier_rule_en&PROTOCOL) {
+ if (stream[9] != csr->protocol)
+ return 1;
+ }
+
+ if (csr->classifier_rule_en&IPMASKEDSRCADDRESS) {
+ for (i = 0; i < 4; i++) {
+ if ((stream[12 + i] & csr->ipsrc_addrmask[i]) !=
+ (csr->ipsrc_addr[i] & csr->ipsrc_addrmask[i]))
+ return 1;
+ }
+ }
+
+ if (csr->classifier_rule_en&IPMASKEDDSTADDRESS) {
+ for (i = 0; i < 4; i++) {
+ if ((stream[16 + i] & csr->ipdst_addrmask[i]) !=
+ (csr->ipdst_addr[i] & csr->ipdst_addrmask[i]))
+ return 1;
+ }
+ }
+
+ if (csr->classifier_rule_en&PROTOCOLSRCPORTRANGE) {
+ i = ((port[0]<<8)&0xff00)+port[1];
+ if ((i < csr->srcport_lo) || (i > csr->srcport_hi))
+ return 1;
+ }
+
+ if (csr->classifier_rule_en&PROTOCOLDSTPORTRANGE) {
+ i = ((port[2]<<8)&0xff00)+port[3];
+ if ((i < csr->dstport_lo) || (i > csr->dstport_hi))
+ return 1;
+ }
+
+ return 0;
+}
+
+static int get_qos_index(struct nic *nic, u8 *iph, u8 *tcpudph)
+{
+ int ip_ver, i;
+ struct qos_cb_s *qcb = &nic->qos;
+
+ if (iph == NULL || tcpudph == NULL)
+ return -1;
+
+ ip_ver = (iph[0]>>4)&0xf;
+
+ if (ip_ver != 4)
+ return -1;
+
+ for (i = 0; i < QOS_MAX; i++) {
+ if (!qcb->csr[i].enabled)
+ continue;
+ if (!qcb->csr[i].classifier_rule_en)
+ continue;
+ if (chk_ipv4_rule(&qcb->csr[i], iph, tcpudph) == 0)
+ return i;
+ }
+
+ return -1;
+}
+
+static void extract_qos_list(struct nic *nic, struct list_head *head)
+{
+ struct qos_cb_s *qcb = &nic->qos;
+ struct qos_entry_s *entry;
+ int i;
+
+ INIT_LIST_HEAD(head);
+
+ for (i = 0; i < QOS_MAX; i++) {
+ if (!qcb->csr[i].enabled)
+ continue;
+ if (qcb->csr[i].qos_buf_count >= qcb->qos_limit_size)
+ continue;
+ if (list_empty(&qcb->qos_list[i]))
+ continue;
+
+ entry = list_entry(qcb->qos_list[i].prev, struct qos_entry_s,
+ list);
+
+ list_move_tail(&entry->list, head);
+ qcb->csr[i].qos_buf_count++;
+
+ if (!list_empty(&qcb->qos_list[i]))
+ netdev_warn(nic->netdev, "Index(%d) is piled!!\n", i);
+ }
+}
+
+static void send_qos_list(struct nic *nic, struct list_head *head)
+{
+ struct qos_entry_s *entry, *n;
+
+ list_for_each_entry_safe(entry, n, head, list) {
+ list_del(&entry->list);
+ gdm_wimax_send_tx(entry->skb, entry->dev);
+ free_qos_entry(entry);
+ }
+}
+
+int gdm_qos_send_hci_pkt(struct sk_buff *skb, struct net_device *dev)
+{
+ struct nic *nic = netdev_priv(dev);
+ int index;
+ struct qos_cb_s *qcb = &nic->qos;
+ unsigned long flags;
+ struct ethhdr *ethh = (struct ethhdr *)(skb->data + HCI_HEADER_SIZE);
+ struct iphdr *iph = (struct iphdr *)((char *)ethh + ETH_HLEN);
+ struct tcphdr *tcph;
+ struct qos_entry_s *entry = NULL;
+ struct list_head send_list;
+ int ret = 0;
+
+ tcph = (struct tcphdr *)iph + iph->ihl*4;
+
+ if (ethh->h_proto == cpu_to_be16(ETH_P_IP)) {
+ if (qcb->qos_list_cnt && !qos_free_list.cnt) {
+ entry = alloc_qos_entry();
+ entry->skb = skb;
+ entry->dev = dev;
+ netdev_dbg(dev, "qcb->qos_list_cnt=%d\n",
+ qcb->qos_list_cnt);
+ }
+
+ spin_lock_irqsave(&qcb->qos_lock, flags);
+ if (qcb->qos_list_cnt) {
+ index = get_qos_index(nic, (u8 *)iph, (u8 *)tcph);
+ if (index == -1)
+ index = qcb->qos_null_idx;
+
+ if (!entry) {
+ entry = alloc_qos_entry();
+ entry->skb = skb;
+ entry->dev = dev;
+ }
+
+ list_add_tail(&entry->list, &qcb->qos_list[index]);
+ extract_qos_list(nic, &send_list);
+ spin_unlock_irqrestore(&qcb->qos_lock, flags);
+ send_qos_list(nic, &send_list);
+ goto out;
+ }
+ spin_unlock_irqrestore(&qcb->qos_lock, flags);
+ if (entry)
+ free_qos_entry(entry);
+ }
+
+ ret = gdm_wimax_send_tx(skb, dev);
+out:
+ return ret;
+}
+
+static int get_csr(struct qos_cb_s *qcb, u32 sfid, int mode)
+{
+ int i;
+
+ for (i = 0; i < qcb->qos_list_cnt; i++) {
+ if (qcb->csr[i].sfid == sfid)
+ return i;
+ }
+
+ if (mode) {
+ for (i = 0; i < QOS_MAX; i++) {
+ if (!qcb->csr[i].enabled) {
+ qcb->csr[i].enabled = true;
+ qcb->qos_list_cnt++;
+ return i;
+ }
+ }
+ }
+ return -1;
+}
+
+#define QOS_CHANGE_DEL 0xFC
+#define QOS_ADD 0xFD
+#define QOS_REPORT 0xFE
+
+void gdm_recv_qos_hci_packet(void *nic_ptr, u8 *buf, int size)
+{
+ struct nic *nic = nic_ptr;
+ int i, index, pos;
+ u32 sfid;
+ u8 sub_cmd_evt;
+ struct qos_cb_s *qcb = &nic->qos;
+ struct qos_entry_s *entry, *n;
+ struct list_head send_list;
+ struct list_head free_list;
+ unsigned long flags;
+
+ sub_cmd_evt = (u8)buf[4];
+
+ if (sub_cmd_evt == QOS_REPORT) {
+ spin_lock_irqsave(&qcb->qos_lock, flags);
+ for (i = 0; i < qcb->qos_list_cnt; i++) {
+ sfid = ((buf[(i*5)+6]<<24)&0xff000000);
+ sfid += ((buf[(i*5)+7]<<16)&0xff0000);
+ sfid += ((buf[(i*5)+8]<<8)&0xff00);
+ sfid += (buf[(i*5)+9]);
+ index = get_csr(qcb, sfid, 0);
+ if (index == -1) {
+ spin_unlock_irqrestore(&qcb->qos_lock, flags);
+ netdev_err(nic->netdev, "QoS ERROR: No SF\n");
+ return;
+ }
+ qcb->csr[index].qos_buf_count = buf[(i*5)+10];
+ }
+
+ extract_qos_list(nic, &send_list);
+ spin_unlock_irqrestore(&qcb->qos_lock, flags);
+ send_qos_list(nic, &send_list);
+ return;
+ }
+
+ /* sub_cmd_evt == QOS_ADD || sub_cmd_evt == QOS_CHANG_DEL */
+ pos = 6;
+ sfid = ((buf[pos++]<<24)&0xff000000);
+ sfid += ((buf[pos++]<<16)&0xff0000);
+ sfid += ((buf[pos++]<<8)&0xff00);
+ sfid += (buf[pos++]);
+
+ index = get_csr(qcb, sfid, 1);
+ if (index == -1) {
+ netdev_err(nic->netdev,
+ "QoS ERROR: csr Update Error / Wrong index (%d)\n",
+ index);
+ return;
+ }
+
+ if (sub_cmd_evt == QOS_ADD) {
+ netdev_dbg(nic->netdev, "QOS_ADD SFID = 0x%x, index=%d\n",
+ sfid, index);
+
+ spin_lock_irqsave(&qcb->qos_lock, flags);
+ qcb->csr[index].sfid = sfid;
+ qcb->csr[index].classifier_rule_en = ((buf[pos++]<<8)&0xff00);
+ qcb->csr[index].classifier_rule_en += buf[pos++];
+ if (qcb->csr[index].classifier_rule_en == 0)
+ qcb->qos_null_idx = index;
+ qcb->csr[index].ip2s_mask = buf[pos++];
+ qcb->csr[index].ip2s_lo = buf[pos++];
+ qcb->csr[index].ip2s_hi = buf[pos++];
+ qcb->csr[index].protocol = buf[pos++];
+ qcb->csr[index].ipsrc_addrmask[0] = buf[pos++];
+ qcb->csr[index].ipsrc_addrmask[1] = buf[pos++];
+ qcb->csr[index].ipsrc_addrmask[2] = buf[pos++];
+ qcb->csr[index].ipsrc_addrmask[3] = buf[pos++];
+ qcb->csr[index].ipsrc_addr[0] = buf[pos++];
+ qcb->csr[index].ipsrc_addr[1] = buf[pos++];
+ qcb->csr[index].ipsrc_addr[2] = buf[pos++];
+ qcb->csr[index].ipsrc_addr[3] = buf[pos++];
+ qcb->csr[index].ipdst_addrmask[0] = buf[pos++];
+ qcb->csr[index].ipdst_addrmask[1] = buf[pos++];
+ qcb->csr[index].ipdst_addrmask[2] = buf[pos++];
+ qcb->csr[index].ipdst_addrmask[3] = buf[pos++];
+ qcb->csr[index].ipdst_addr[0] = buf[pos++];
+ qcb->csr[index].ipdst_addr[1] = buf[pos++];
+ qcb->csr[index].ipdst_addr[2] = buf[pos++];
+ qcb->csr[index].ipdst_addr[3] = buf[pos++];
+ qcb->csr[index].srcport_lo = ((buf[pos++]<<8)&0xff00);
+ qcb->csr[index].srcport_lo += buf[pos++];
+ qcb->csr[index].srcport_hi = ((buf[pos++]<<8)&0xff00);
+ qcb->csr[index].srcport_hi += buf[pos++];
+ qcb->csr[index].dstport_lo = ((buf[pos++]<<8)&0xff00);
+ qcb->csr[index].dstport_lo += buf[pos++];
+ qcb->csr[index].dstport_hi = ((buf[pos++]<<8)&0xff00);
+ qcb->csr[index].dstport_hi += buf[pos++];
+
+ qcb->qos_limit_size = 254/qcb->qos_list_cnt;
+ spin_unlock_irqrestore(&qcb->qos_lock, flags);
+ } else if (sub_cmd_evt == QOS_CHANGE_DEL) {
+ netdev_dbg(nic->netdev, "QOS_CHANGE_DEL SFID = 0x%x, index=%d\n",
+ sfid, index);
+
+ INIT_LIST_HEAD(&free_list);
+
+ spin_lock_irqsave(&qcb->qos_lock, flags);
+ qcb->csr[index].enabled = false;
+ qcb->qos_list_cnt--;
+ qcb->qos_limit_size = 254/qcb->qos_list_cnt;
+
+ list_for_each_entry_safe(entry, n, &qcb->qos_list[index],
+ list) {
+ list_move_tail(&entry->list, &free_list);
+ }
+ spin_unlock_irqrestore(&qcb->qos_lock, flags);
+ free_qos_entry_list(&free_list);
+ }
+}
Code Review / kvmfornfv.git / blobdiff