swh:1:snp:3c665ee4f67729f27f2e40193ab88e7298cf0fef
Tip revision: a0d271cbfed1dd50278c6b06bead3d00ba0a88f9 authored by Linus Torvalds on 30 September 2012, 23:47:46 UTC
Linux 3.6
Linux 3.6
Tip revision: a0d271c
gdm_wimax.c
/*
* 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.
*/
#include <linux/etherdevice.h>
#include <asm/byteorder.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/udp.h>
#include <linux/in.h>
#include "gdm_wimax.h"
#include "hci.h"
#include "wm_ioctl.h"
#include "netlink_k.h"
#define gdm_wimax_send(n, d, l) \
(n->phy_dev->send_func)(n->phy_dev->priv_dev, d, l, NULL, NULL)
#define gdm_wimax_send_with_cb(n, d, l, c, b) \
(n->phy_dev->send_func)(n->phy_dev->priv_dev, d, l, c, b)
#define gdm_wimax_rcv_with_cb(n, c, b) \
(n->phy_dev->rcv_func)(n->phy_dev->priv_dev, c, b)
#define EVT_MAX_SIZE 2048
struct evt_entry {
struct list_head list;
struct net_device *dev;
char evt_data[EVT_MAX_SIZE];
int size;
};
static void __gdm_wimax_event_send(struct work_struct *work);
static inline struct evt_entry *alloc_event_entry(void);
static inline void free_event_entry(struct evt_entry *e);
static struct evt_entry *get_event_entry(void);
static void put_event_entry(struct evt_entry *e);
static struct {
int ref_cnt;
struct sock *sock;
struct list_head evtq;
spinlock_t evt_lock;
struct list_head freeq;
struct work_struct ws;
} wm_event;
static u8 gdm_wimax_macaddr[6] = {0x00, 0x0a, 0x3b, 0xf0, 0x01, 0x30};
static void gdm_wimax_ind_fsm_update(struct net_device *dev, struct fsm_s *fsm);
static void gdm_wimax_ind_if_updown(struct net_device *dev, int if_up);
#if defined(DEBUG_SDU)
static void printk_hex(u8 *buf, u32 size)
{
int i;
for (i = 0; i < size; i++) {
if (i && i % 16 == 0)
printk(KERN_DEBUG "\n%02x ", *buf++);
else
printk(KERN_DEBUG "%02x ", *buf++);
}
printk(KERN_DEBUG "\n");
}
static const char *get_protocol_name(u16 protocol)
{
static char buf[32];
const char *name = "-";
switch (protocol) {
case ETH_P_ARP:
name = "ARP";
break;
case ETH_P_IP:
name = "IP";
break;
case ETH_P_IPV6:
name = "IPv6";
break;
}
sprintf(buf, "0x%04x(%s)", protocol, name);
return buf;
}
static const char *get_ip_protocol_name(u8 ip_protocol)
{
static char buf[32];
const char *name = "-";
switch (ip_protocol) {
case IPPROTO_TCP:
name = "TCP";
break;
case IPPROTO_UDP:
name = "UDP";
break;
case IPPROTO_ICMP:
name = "ICMP";
break;
}
sprintf(buf, "%u(%s)", ip_protocol, name);
return buf;
}
static const char *get_port_name(u16 port)
{
static char buf[32];
const char *name = "-";
switch (port) {
case 67:
name = "DHCP-Server";
break;
case 68:
name = "DHCP-Client";
break;
case 69:
name = "TFTP";
break;
}
sprintf(buf, "%u(%s)", port, name);
return buf;
}
static void dump_eth_packet(const char *title, u8 *data, int len)
{
struct iphdr *ih = NULL;
struct udphdr *uh = NULL;
u16 protocol = 0;
u8 ip_protocol = 0;
u16 port = 0;
protocol = (data[12]<<8) | data[13];
ih = (struct iphdr *) (data+ETH_HLEN);
if (protocol == ETH_P_IP) {
uh = (struct udphdr *) ((char *)ih + sizeof(struct iphdr));
ip_protocol = ih->protocol;
port = ntohs(uh->dest);
} else if (protocol == ETH_P_IPV6) {
struct ipv6hdr *i6h = (struct ipv6hdr *) data;
uh = (struct udphdr *) ((char *)i6h + sizeof(struct ipv6hdr));
ip_protocol = i6h->nexthdr;
port = ntohs(uh->dest);
}
printk(KERN_DEBUG "[%s] len=%d, %s, %s, %s\n",
title, len,
get_protocol_name(protocol),
get_ip_protocol_name(ip_protocol),
get_port_name(port));
#if 1
if (!(data[0] == 0xff && data[1] == 0xff)) {
if (protocol == ETH_P_IP) {
printk(KERN_DEBUG " src=%u.%u.%u.%u\n",
NIPQUAD(ih->saddr));
} else if (protocol == ETH_P_IPV6) {
#ifdef NIP6
printk(KERN_DEBUG " src=%x:%x:%x:%x:%x:%x:%x:%x\n",
NIP6(ih->saddr));
#else
printk(KERN_DEBUG " src=%pI6\n", &ih->saddr);
#endif
}
}
#endif
#if (DUMP_PACKET & DUMP_SDU_ALL)
printk_hex(data, len);
#else
#if (DUMP_PACKET & DUMP_SDU_ARP)
if (protocol == ETH_P_ARP)
printk_hex(data, len);
#endif
#if (DUMP_PACKET & DUMP_SDU_IP)
if (protocol == ETH_P_IP || protocol == ETH_P_IPV6)
printk_hex(data, len);
#else
#if (DUMP_PACKET & DUMP_SDU_IP_TCP)
if (ip_protocol == IPPROTO_TCP)
printk_hex(data, len);
#endif
#if (DUMP_PACKET & DUMP_SDU_IP_UDP)
if (ip_protocol == IPPROTO_UDP)
printk_hex(data, len);
#endif
#if (DUMP_PACKET & DUMP_SDU_IP_ICMP)
if (ip_protocol == IPPROTO_ICMP)
printk_hex(data, len);
#endif
#endif
#endif
}
#endif
static inline int gdm_wimax_header(struct sk_buff **pskb)
{
u16 buf[HCI_HEADER_SIZE / sizeof(u16)];
struct sk_buff *skb = *pskb;
int ret = 0;
if (unlikely(skb_headroom(skb) < HCI_HEADER_SIZE)) {
struct sk_buff *skb2;
skb2 = skb_realloc_headroom(skb, HCI_HEADER_SIZE);
if (skb2 == NULL)
return -ENOMEM;
if (skb->sk)
skb_set_owner_w(skb2, skb->sk);
kfree_skb(skb);
skb = skb2;
}
skb_push(skb, HCI_HEADER_SIZE);
buf[0] = H2B(WIMAX_TX_SDU);
buf[1] = H2B(skb->len - HCI_HEADER_SIZE);
memcpy(skb->data, buf, HCI_HEADER_SIZE);
*pskb = skb;
return ret;
}
static void gdm_wimax_event_rcv(struct net_device *dev, u16 type, void *msg,
int len)
{
struct nic *nic = netdev_priv(dev);
#if defined(DEBUG_HCI)
u8 *buf = (u8 *) msg;
u16 hci_cmd = (buf[0]<<8) | buf[1];
u16 hci_len = (buf[2]<<8) | buf[3];
printk(KERN_DEBUG "H=>D: 0x%04x(%d)\n", hci_cmd, hci_len);
#endif
gdm_wimax_send(nic, msg, len);
}
static int gdm_wimax_event_init(void)
{
if (!wm_event.ref_cnt) {
wm_event.sock = netlink_init(NETLINK_WIMAX,
gdm_wimax_event_rcv);
if (wm_event.sock)
wm_event.ref_cnt++;
INIT_LIST_HEAD(&wm_event.evtq);
INIT_LIST_HEAD(&wm_event.freeq);
INIT_WORK(&wm_event.ws, __gdm_wimax_event_send);
spin_lock_init(&wm_event.evt_lock);
return 0;
}
printk(KERN_ERR "Creating WiMax Event netlink is failed\n");
return -1;
}
static void gdm_wimax_event_exit(void)
{
if (wm_event.sock && --wm_event.ref_cnt == 0) {
struct evt_entry *e, *temp;
unsigned long flags;
spin_lock_irqsave(&wm_event.evt_lock, flags);
list_for_each_entry_safe(e, temp, &wm_event.evtq, list) {
list_del(&e->list);
free_event_entry(e);
}
list_for_each_entry_safe(e, temp, &wm_event.freeq, list) {
list_del(&e->list);
free_event_entry(e);
}
spin_unlock_irqrestore(&wm_event.evt_lock, flags);
netlink_exit(wm_event.sock);
wm_event.sock = NULL;
}
}
static inline struct evt_entry *alloc_event_entry(void)
{
return kmalloc(sizeof(struct evt_entry), GFP_ATOMIC);
}
static inline void free_event_entry(struct evt_entry *e)
{
kfree(e);
}
static struct evt_entry *get_event_entry(void)
{
struct evt_entry *e;
if (list_empty(&wm_event.freeq))
e = alloc_event_entry();
else {
e = list_entry(wm_event.freeq.next, struct evt_entry, list);
list_del(&e->list);
}
return e;
}
static void put_event_entry(struct evt_entry *e)
{
BUG_ON(!e);
list_add_tail(&e->list, &wm_event.freeq);
}
static void __gdm_wimax_event_send(struct work_struct *work)
{
int idx;
unsigned long flags;
struct evt_entry *e;
spin_lock_irqsave(&wm_event.evt_lock, flags);
while (!list_empty(&wm_event.evtq)) {
e = list_entry(wm_event.evtq.next, struct evt_entry, list);
spin_unlock_irqrestore(&wm_event.evt_lock, flags);
sscanf(e->dev->name, "wm%d", &idx);
netlink_send(wm_event.sock, idx, 0, e->evt_data, e->size);
spin_lock_irqsave(&wm_event.evt_lock, flags);
list_del(&e->list);
put_event_entry(e);
}
spin_unlock_irqrestore(&wm_event.evt_lock, flags);
}
static int gdm_wimax_event_send(struct net_device *dev, char *buf, int size)
{
struct evt_entry *e;
unsigned long flags;
#if defined(DEBUG_HCI)
u16 hci_cmd = ((u8)buf[0]<<8) | (u8)buf[1];
u16 hci_len = ((u8)buf[2]<<8) | (u8)buf[3];
printk(KERN_DEBUG "D=>H: 0x%04x(%d)\n", hci_cmd, hci_len);
#endif
spin_lock_irqsave(&wm_event.evt_lock, flags);
e = get_event_entry();
if (!e) {
printk(KERN_ERR "%s: No memory for event\n", __func__);
spin_unlock_irqrestore(&wm_event.evt_lock, flags);
return -ENOMEM;
}
e->dev = dev;
e->size = size;
memcpy(e->evt_data, buf, size);
list_add_tail(&e->list, &wm_event.evtq);
spin_unlock_irqrestore(&wm_event.evt_lock, flags);
schedule_work(&wm_event.ws);
return 0;
}
static void tx_complete(void *arg)
{
struct nic *nic = arg;
if (netif_queue_stopped(nic->netdev))
netif_wake_queue(nic->netdev);
}
int gdm_wimax_send_tx(struct sk_buff *skb, struct net_device *dev)
{
int ret = 0;
struct nic *nic = netdev_priv(dev);
ret = gdm_wimax_send_with_cb(nic, skb->data, skb->len, tx_complete,
nic);
if (ret == -ENOSPC) {
netif_stop_queue(dev);
ret = 0;
}
if (ret) {
skb_pull(skb, HCI_HEADER_SIZE);
return ret;
}
nic->stats.tx_packets++;
nic->stats.tx_bytes += skb->len - HCI_HEADER_SIZE;
kfree_skb(skb);
return ret;
}
static int gdm_wimax_tx(struct sk_buff *skb, struct net_device *dev)
{
int ret = 0;
struct nic *nic = netdev_priv(dev);
struct fsm_s *fsm = (struct fsm_s *) nic->sdk_data[SIOC_DATA_FSM].buf;
#if defined(DEBUG_SDU)
dump_eth_packet("TX", skb->data, skb->len);
#endif
ret = gdm_wimax_header(&skb);
if (ret < 0) {
skb_pull(skb, HCI_HEADER_SIZE);
return ret;
}
#if !defined(LOOPBACK_TEST)
if (!fsm)
printk(KERN_ERR "ASSERTION ERROR: fsm is NULL!!\n");
else if (fsm->m_status != M_CONNECTED) {
printk(KERN_EMERG "ASSERTION ERROR: Device is NOT ready. status=%d\n",
fsm->m_status);
kfree_skb(skb);
return 0;
}
#endif
#if defined(CONFIG_WIMAX_GDM72XX_QOS)
ret = gdm_qos_send_hci_pkt(skb, dev);
#else
ret = gdm_wimax_send_tx(skb, dev);
#endif
return ret;
}
static int gdm_wimax_set_config(struct net_device *dev, struct ifmap *map)
{
if (dev->flags & IFF_UP)
return -EBUSY;
return 0;
}
static void __gdm_wimax_set_mac_addr(struct net_device *dev, char *mac_addr)
{
u16 hci_pkt_buf[32 / sizeof(u16)];
u8 *pkt = (u8 *) &hci_pkt_buf[0];
struct nic *nic = netdev_priv(dev);
/* Since dev is registered as a ethernet device,
* ether_setup has made dev->addr_len to be ETH_ALEN
*/
memcpy(dev->dev_addr, mac_addr, dev->addr_len);
/* Let lower layer know of this change by sending
* SetInformation(MAC Address)
*/
hci_pkt_buf[0] = H2B(WIMAX_SET_INFO); /* cmd_evt */
hci_pkt_buf[1] = H2B(8); /* size */
pkt[4] = 0; /* T */
pkt[5] = 6; /* L */
memcpy(pkt + 6, mac_addr, dev->addr_len); /* V */
gdm_wimax_send(nic, pkt, HCI_HEADER_SIZE + 8);
}
/* A driver function */
static int gdm_wimax_set_mac_addr(struct net_device *dev, void *p)
{
struct sockaddr *addr = p;
if (netif_running(dev))
return -EBUSY;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
__gdm_wimax_set_mac_addr(dev, addr->sa_data);
return 0;
}
static struct net_device_stats *gdm_wimax_stats(struct net_device *dev)
{
struct nic *nic = netdev_priv(dev);
return &nic->stats;
}
static int gdm_wimax_open(struct net_device *dev)
{
struct nic *nic = netdev_priv(dev);
struct fsm_s *fsm = (struct fsm_s *) nic->sdk_data[SIOC_DATA_FSM].buf;
netif_start_queue(dev);
if (fsm && fsm->m_status != M_INIT)
gdm_wimax_ind_if_updown(dev, 1);
return 0;
}
static int gdm_wimax_close(struct net_device *dev)
{
struct nic *nic = netdev_priv(dev);
struct fsm_s *fsm = (struct fsm_s *) nic->sdk_data[SIOC_DATA_FSM].buf;
netif_stop_queue(dev);
if (fsm && fsm->m_status != M_INIT)
gdm_wimax_ind_if_updown(dev, 0);
return 0;
}
static void kdelete(void **buf)
{
if (buf && *buf) {
kfree(*buf);
*buf = NULL;
}
}
static int gdm_wimax_ioctl_get_data(struct data_s *dst, struct data_s *src)
{
int size;
size = dst->size < src->size ? dst->size : src->size;
dst->size = size;
if (src->size) {
if (!dst->buf)
return -EINVAL;
if (copy_to_user(dst->buf, src->buf, size))
return -EFAULT;
}
return 0;
}
static int gdm_wimax_ioctl_set_data(struct data_s *dst, struct data_s *src)
{
if (!src->size) {
dst->size = 0;
return 0;
}
if (!src->buf)
return -EINVAL;
if (!(dst->buf && dst->size == src->size)) {
kdelete(&dst->buf);
dst->buf = kmalloc(src->size, GFP_KERNEL);
if (dst->buf == NULL)
return -ENOMEM;
}
if (copy_from_user(dst->buf, src->buf, src->size)) {
kdelete(&dst->buf);
return -EFAULT;
}
dst->size = src->size;
return 0;
}
static void gdm_wimax_cleanup_ioctl(struct net_device *dev)
{
struct nic *nic = netdev_priv(dev);
int i;
for (i = 0; i < SIOC_DATA_MAX; i++)
kdelete(&nic->sdk_data[i].buf);
}
static void gdm_update_fsm(struct net_device *dev, struct fsm_s *new_fsm)
{
struct nic *nic = netdev_priv(dev);
struct fsm_s *cur_fsm =
(struct fsm_s *) nic->sdk_data[SIOC_DATA_FSM].buf;
if (!cur_fsm)
return;
if (cur_fsm->m_status != new_fsm->m_status ||
cur_fsm->c_status != new_fsm->c_status) {
if (new_fsm->m_status == M_CONNECTED)
netif_carrier_on(dev);
else if (cur_fsm->m_status == M_CONNECTED) {
netif_carrier_off(dev);
#if defined(CONFIG_WIMAX_GDM72XX_QOS)
gdm_qos_release_list(nic);
#endif
}
gdm_wimax_ind_fsm_update(dev, new_fsm);
}
}
static int gdm_wimax_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct wm_req_s *req = (struct wm_req_s *) ifr;
struct nic *nic = netdev_priv(dev);
int ret;
if (cmd != SIOCWMIOCTL)
return -EOPNOTSUPP;
switch (req->cmd) {
case SIOCG_DATA:
case SIOCS_DATA:
if (req->data_id >= SIOC_DATA_MAX) {
printk(KERN_ERR
"%s error: data-index(%d) is invalid!!\n",
__func__, req->data_id);
return -EOPNOTSUPP;
}
if (req->cmd == SIOCG_DATA) {
ret = gdm_wimax_ioctl_get_data(&req->data,
&nic->sdk_data[req->data_id]);
if (ret < 0)
return ret;
} else if (req->cmd == SIOCS_DATA) {
if (req->data_id == SIOC_DATA_FSM) {
/*NOTE: gdm_update_fsm should be called
before gdm_wimax_ioctl_set_data is called*/
gdm_update_fsm(dev,
(struct fsm_s *) req->data.buf);
}
ret = gdm_wimax_ioctl_set_data(
&nic->sdk_data[req->data_id], &req->data);
if (ret < 0)
return ret;
}
break;
default:
printk(KERN_ERR "%s: %x unknown ioctl\n", __func__, cmd);
return -EOPNOTSUPP;
}
return 0;
}
static void gdm_wimax_prepare_device(struct net_device *dev)
{
struct nic *nic = netdev_priv(dev);
u16 buf[32 / sizeof(u16)];
struct hci_s *hci = (struct hci_s *) buf;
u16 len = 0;
u32 val = 0;
#define BIT_MULTI_CS 0
#define BIT_WIMAX 1
#define BIT_QOS 2
#define BIT_AGGREGATION 3
/* GetInformation mac address */
len = 0;
hci->cmd_evt = H2B(WIMAX_GET_INFO);
hci->data[len++] = TLV_T(T_MAC_ADDRESS);
hci->length = H2B(len);
gdm_wimax_send(nic, hci, HCI_HEADER_SIZE+len);
val = (1<<BIT_WIMAX) | (1<<BIT_MULTI_CS);
#if defined(CONFIG_WIMAX_GDM72XX_QOS)
val |= (1<<BIT_QOS);
#endif
#if defined(CONFIG_WIMAX_GDM72XX_WIMAX2)
val |= (1<<BIT_AGGREGATION);
#endif
/* Set capability */
len = 0;
hci->cmd_evt = H2B(WIMAX_SET_INFO);
hci->data[len++] = TLV_T(T_CAPABILITY);
hci->data[len++] = TLV_L(T_CAPABILITY);
val = DH2B(val);
memcpy(&hci->data[len], &val, TLV_L(T_CAPABILITY));
len += TLV_L(T_CAPABILITY);
hci->length = H2B(len);
gdm_wimax_send(nic, hci, HCI_HEADER_SIZE+len);
printk(KERN_INFO "GDM WiMax Set CAPABILITY: 0x%08X\n", DB2H(val));
}
static int gdm_wimax_hci_get_tlv(u8 *buf, u8 *T, u16 *L, u8 **V)
{
#define __U82U16(b) ((u16)((u8 *)(b))[0] | ((u16)((u8 *)(b))[1] << 8))
int next_pos;
*T = buf[0];
if (buf[1] == 0x82) {
*L = B2H(__U82U16(&buf[2]));
next_pos = 1/*type*/+3/*len*/;
} else {
*L = buf[1];
next_pos = 1/*type*/+1/*len*/;
}
*V = &buf[next_pos];
next_pos += *L/*length of val*/;
return next_pos;
}
static int gdm_wimax_get_prepared_info(struct net_device *dev, char *buf,
int len)
{
u8 T, *V;
u16 L;
u16 cmd_evt, cmd_len;
int pos = HCI_HEADER_SIZE;
cmd_evt = B2H(*(u16 *)&buf[0]);
cmd_len = B2H(*(u16 *)&buf[2]);
if (len < cmd_len + HCI_HEADER_SIZE) {
printk(KERN_ERR "%s: invalid length [%d/%d]\n", __func__,
cmd_len + HCI_HEADER_SIZE, len);
return -1;
}
if (cmd_evt == WIMAX_GET_INFO_RESULT) {
if (cmd_len < 2) {
printk(KERN_ERR "%s: len is too short [%x/%d]\n",
__func__, cmd_evt, len);
return -1;
}
pos += gdm_wimax_hci_get_tlv(&buf[pos], &T, &L, &V);
if (T == TLV_T(T_MAC_ADDRESS)) {
if (L != dev->addr_len) {
printk(KERN_ERR
"%s Invalid inofrmation result T/L "
"[%x/%d]\n", __func__, T, L);
return -1;
}
printk(KERN_INFO "MAC change [%pM]->[%pM]\n",
dev->dev_addr, V);
memcpy(dev->dev_addr, V, dev->addr_len);
return 1;
}
}
gdm_wimax_event_send(dev, buf, len);
return 0;
}
static void gdm_wimax_netif_rx(struct net_device *dev, char *buf, int len)
{
struct nic *nic = netdev_priv(dev);
struct sk_buff *skb;
int ret;
#if defined(DEBUG_SDU)
dump_eth_packet("RX", buf, len);
#endif
skb = dev_alloc_skb(len + 2);
if (!skb) {
printk(KERN_ERR "%s: dev_alloc_skb failed!\n", __func__);
return;
}
skb_reserve(skb, 2);
nic->stats.rx_packets++;
nic->stats.rx_bytes += len;
memcpy(skb_put(skb, len), buf, len);
skb->dev = dev;
skb->protocol = eth_type_trans(skb, dev); /* what will happen? */
ret = in_interrupt() ? netif_rx(skb) : netif_rx_ni(skb);
if (ret == NET_RX_DROP)
printk(KERN_ERR "%s skb dropped\n", __func__);
}
static void gdm_wimax_transmit_aggr_pkt(struct net_device *dev, char *buf,
int len)
{
#define HCI_PADDING_BYTE 4
#define HCI_RESERVED_BYTE 4
struct hci_s *hci;
int length;
while (len > 0) {
hci = (struct hci_s *) buf;
if (B2H(hci->cmd_evt) != WIMAX_RX_SDU) {
printk(KERN_ERR "Wrong cmd_evt(0x%04X)\n",
B2H(hci->cmd_evt));
break;
}
length = B2H(hci->length);
gdm_wimax_netif_rx(dev, hci->data, length);
if (length & 0x3) {
/* Add padding size */
length += HCI_PADDING_BYTE - (length & 0x3);
}
length += HCI_HEADER_SIZE + HCI_RESERVED_BYTE;
len -= length;
buf += length;
}
}
static void gdm_wimax_transmit_pkt(struct net_device *dev, char *buf, int len)
{
#if defined(CONFIG_WIMAX_GDM72XX_QOS)
struct nic *nic = netdev_priv(dev);
#endif
u16 cmd_evt, cmd_len;
/* This code is added for certain rx packet to be ignored. */
if (len == 0)
return;
cmd_evt = B2H(*(u16 *)&buf[0]);
cmd_len = B2H(*(u16 *)&buf[2]);
if (len < cmd_len + HCI_HEADER_SIZE) {
if (len)
printk(KERN_ERR "%s: invalid length [%d/%d]\n",
__func__, cmd_len + HCI_HEADER_SIZE, len);
return;
}
switch (cmd_evt) {
case WIMAX_RX_SDU_AGGR:
gdm_wimax_transmit_aggr_pkt(dev, &buf[HCI_HEADER_SIZE],
cmd_len);
break;
case WIMAX_RX_SDU:
gdm_wimax_netif_rx(dev, &buf[HCI_HEADER_SIZE], cmd_len);
break;
#if defined(CONFIG_WIMAX_GDM72XX_QOS)
case WIMAX_EVT_MODEM_REPORT:
gdm_recv_qos_hci_packet(nic, buf, len);
break;
#endif
case WIMAX_SDU_TX_FLOW:
if (buf[4] == 0) {
if (!netif_queue_stopped(dev))
netif_stop_queue(dev);
} else if (buf[4] == 1) {
if (netif_queue_stopped(dev))
netif_wake_queue(dev);
}
break;
default:
gdm_wimax_event_send(dev, buf, len);
break;
}
}
static void gdm_wimax_ind_fsm_update(struct net_device *dev, struct fsm_s *fsm)
{
u16 buf[32 / sizeof(u16)];
u8 *hci_pkt_buf = (u8 *)&buf[0];
/* Indicate updating fsm */
buf[0] = H2B(WIMAX_FSM_UPDATE);
buf[1] = H2B(sizeof(struct fsm_s));
memcpy(&hci_pkt_buf[HCI_HEADER_SIZE], fsm, sizeof(struct fsm_s));
gdm_wimax_event_send(dev, hci_pkt_buf,
HCI_HEADER_SIZE + sizeof(struct fsm_s));
}
static void gdm_wimax_ind_if_updown(struct net_device *dev, int if_up)
{
u16 buf[32 / sizeof(u16)];
struct hci_s *hci = (struct hci_s *) buf;
unsigned char up_down;
up_down = if_up ? WIMAX_IF_UP : WIMAX_IF_DOWN;
/* Indicate updating fsm */
hci->cmd_evt = H2B(WIMAX_IF_UPDOWN);
hci->length = H2B(sizeof(up_down));
hci->data[0] = up_down;
gdm_wimax_event_send(dev, (char *)hci, HCI_HEADER_SIZE+sizeof(up_down));
}
static void rx_complete(void *arg, void *data, int len)
{
struct nic *nic = arg;
gdm_wimax_transmit_pkt(nic->netdev, data, len);
gdm_wimax_rcv_with_cb(nic, rx_complete, nic);
}
static void prepare_rx_complete(void *arg, void *data, int len)
{
struct nic *nic = arg;
int ret;
ret = gdm_wimax_get_prepared_info(nic->netdev, data, len);
if (ret == 1)
gdm_wimax_rcv_with_cb(nic, rx_complete, nic);
else {
if (ret < 0)
printk(KERN_ERR "get_prepared_info failed(%d)\n", ret);
gdm_wimax_rcv_with_cb(nic, prepare_rx_complete, nic);
#if 0
/* Re-prepare WiMax device */
gdm_wimax_prepare_device(nic->netdev);
#endif
}
}
static void start_rx_proc(struct nic *nic)
{
gdm_wimax_rcv_with_cb(nic, prepare_rx_complete, nic);
}
static struct net_device_ops gdm_netdev_ops = {
.ndo_open = gdm_wimax_open,
.ndo_stop = gdm_wimax_close,
.ndo_set_config = gdm_wimax_set_config,
.ndo_start_xmit = gdm_wimax_tx,
.ndo_get_stats = gdm_wimax_stats,
.ndo_set_mac_address = gdm_wimax_set_mac_addr,
.ndo_do_ioctl = gdm_wimax_ioctl,
};
int register_wimax_device(struct phy_dev *phy_dev, struct device *pdev)
{
struct nic *nic = NULL;
struct net_device *dev;
int ret;
dev = (struct net_device *)alloc_netdev(sizeof(*nic),
"wm%d", ether_setup);
if (dev == NULL) {
printk(KERN_ERR "alloc_etherdev failed\n");
return -ENOMEM;
}
SET_NETDEV_DEV(dev, pdev);
dev->mtu = 1400;
dev->netdev_ops = &gdm_netdev_ops;
dev->flags &= ~IFF_MULTICAST;
memcpy(dev->dev_addr, gdm_wimax_macaddr, sizeof(gdm_wimax_macaddr));
nic = netdev_priv(dev);
memset(nic, 0, sizeof(*nic));
nic->netdev = dev;
nic->phy_dev = phy_dev;
phy_dev->netdev = dev;
/* event socket init */
ret = gdm_wimax_event_init();
if (ret < 0) {
printk(KERN_ERR "Cannot create event.\n");
goto cleanup;
}
ret = register_netdev(dev);
if (ret)
goto cleanup;
#if defined(LOOPBACK_TEST)
netif_start_queue(dev);
netif_carrier_on(dev);
#else
netif_carrier_off(dev);
#endif
#ifdef CONFIG_WIMAX_GDM72XX_QOS
gdm_qos_init(nic);
#endif
start_rx_proc(nic);
/* Prepare WiMax device */
gdm_wimax_prepare_device(dev);
return 0;
cleanup:
printk(KERN_ERR "register_netdev failed\n");
free_netdev(dev);
return ret;
}
void unregister_wimax_device(struct phy_dev *phy_dev)
{
struct nic *nic = netdev_priv(phy_dev->netdev);
struct fsm_s *fsm = (struct fsm_s *) nic->sdk_data[SIOC_DATA_FSM].buf;
if (fsm)
fsm->m_status = M_INIT;
unregister_netdev(nic->netdev);
gdm_wimax_event_exit();
#if defined(CONFIG_WIMAX_GDM72XX_QOS)
gdm_qos_release_list(nic);
#endif
gdm_wimax_cleanup_ioctl(phy_dev->netdev);
free_netdev(nic->netdev);
}