#include <linux/irq.h>
#include <linux/kthread.h>
#include <linux/firmware.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include "cfg80211.h"
#include "wlan_cfg.h"
#define WILC_MULTICAST_TABLE_SIZE 8
#define WILC_MAX_FW_VERSION_STR_SIZE 50
#define WILC1000_API_VER 1
#define WILC1000_FW_PREFIX "atmel/wilc1000_wifi_firmware-"
#define __WILC1000_FW(api) WILC1000_FW_PREFIX #api ".bin"
#define WILC1000_FW(api) __WILC1000_FW(api)
#define WILC3000_API_VER 1
#define WILC3000_FW_PREFIX "atmel/wilc3000_wifi_firmware-"
#define __WILC3000_FW(api) WILC3000_FW_PREFIX #api ".bin"
#define WILC3000_FW(api) __WILC3000_FW(api)
static irqreturn_t isr_uh_routine(int irq, void *user_data)
{
struct wilc *wilc = user_data;
if (wilc->close) {
pr_err("Can't handle UH interrupt\n");
return IRQ_HANDLED;
}
return IRQ_WAKE_THREAD;
}
static irqreturn_t isr_bh_routine(int irq, void *userdata)
{
struct wilc *wilc = userdata;
if (wilc->close) {
pr_err("Can't handle BH interrupt\n");
return IRQ_HANDLED;
}
wilc_handle_isr(wilc);
return IRQ_HANDLED;
}
static int init_irq(struct net_device *dev)
{
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wl = vif->wilc;
int ret;
ret = request_threaded_irq(wl->dev_irq_num, isr_uh_routine,
isr_bh_routine,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
dev->name, wl);
if (ret) {
netdev_err(dev, "Failed to request IRQ [%d]\n", ret);
return ret;
}
netdev_dbg(dev, "IRQ request succeeded IRQ-NUM= %d\n", wl->dev_irq_num);
return 0;
}
static void deinit_irq(struct net_device *dev)
{
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
if (wilc->dev_irq_num)
free_irq(wilc->dev_irq_num, wilc);
}
void wilc_mac_indicate(struct wilc *wilc)
{
s8 status;
wilc_wlan_cfg_get_val(wilc, WID_STATUS, &status, 1);
if (wilc->mac_status == WILC_MAC_STATUS_INIT) {
wilc->mac_status = status;
complete(&wilc->sync_event);
} else {
wilc->mac_status = status;
}
}
static struct net_device *get_if_handler(struct wilc *wilc, u8 *mac_header)
{
struct net_device *ndev = NULL;
struct wilc_vif *vif;
struct ieee80211_hdr *h = (struct ieee80211_hdr *)mac_header;
wilc_for_each_vif(wilc, vif) {
if (vif->iftype == WILC_STATION_MODE)
if (ether_addr_equal_unaligned(h->addr2, vif->bssid)) {
ndev = vif->ndev;
goto out;
}
if (vif->iftype == WILC_AP_MODE)
if (ether_addr_equal_unaligned(h->addr1, vif->bssid)) {
ndev = vif->ndev;
goto out;
}
}
out:
return ndev;
}
void wilc_wlan_set_bssid(struct net_device *wilc_netdev, const u8 *bssid,
u8 mode)
{
struct wilc_vif *vif = netdev_priv(wilc_netdev);
if (bssid)
ether_addr_copy(vif->bssid, bssid);
else
eth_zero_addr(vif->bssid);
vif->iftype = mode;
}
int wilc_wlan_get_num_conn_ifcs(struct wilc *wilc)
{
int srcu_idx;
u8 ret_val = 0;
struct wilc_vif *vif;
srcu_idx = srcu_read_lock(&wilc->srcu);
wilc_for_each_vif(wilc, vif) {
if (!is_zero_ether_addr(vif->bssid))
ret_val++;
}
srcu_read_unlock(&wilc->srcu, srcu_idx);
return ret_val;
}
static void wilc_wake_tx_queues(struct wilc *wl)
{
int srcu_idx;
struct wilc_vif *ifc;
srcu_idx = srcu_read_lock(&wl->srcu);
wilc_for_each_vif(wl, ifc) {
if (ifc->mac_opened && netif_queue_stopped(ifc->ndev))
netif_wake_queue(ifc->ndev);
}
srcu_read_unlock(&wl->srcu, srcu_idx);
}
static int wilc_txq_task(void *vp)
{
int ret;
u32 txq_count;
struct wilc *wl = vp;
complete(&wl->txq_thread_started);
while (1) {
if (wait_for_completion_interruptible(&wl->txq_event))
continue;
if (wl->close) {
complete(&wl->txq_thread_started);
while (!kthread_should_stop())
schedule();
break;
}
do {
ret = wilc_wlan_handle_txq(wl, &txq_count);
if (txq_count < FLOW_CONTROL_LOWER_THRESHOLD) {
wilc_wake_tx_queues(wl);
}
if (ret != WILC_VMM_ENTRY_FULL_RETRY)
break;
msleep_interruptible(TX_BACKOFF_WEIGHT_MS);
} while (!wl->close);
}
return 0;
}
static int wilc_wlan_get_firmware(struct net_device *dev)
{
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
const struct firmware *wilc_fw;
char *firmware;
int ret;
if (is_wilc1000(wilc->chipid))
firmware = WILC1000_FW(WILC1000_API_VER);
else if (is_wilc3000(wilc->chipid))
firmware = WILC3000_FW(WILC3000_API_VER);
else
return -EINVAL;
netdev_info(dev, "WILC%d loading firmware [%s]\n",
is_wilc1000(wilc->chipid) ? 1000 : 3000,
firmware);
ret = request_firmware(&wilc_fw, firmware, wilc->dev);
if (ret != 0) {
netdev_err(dev, "%s - firmware not available\n", firmware);
return -EINVAL;
}
wilc->firmware = wilc_fw;
return 0;
}
static int wilc_start_firmware(struct net_device *dev)
{
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
int ret = 0;
ret = wilc_wlan_start(wilc);
if (ret)
return ret;
if (!wait_for_completion_timeout(&wilc->sync_event,
msecs_to_jiffies(5000)))
return -ETIME;
return 0;
}
static int wilc_firmware_download(struct net_device *dev)
{
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
int ret = 0;
if (!wilc->firmware) {
netdev_err(dev, "Firmware buffer is NULL\n");
return -ENOBUFS;
}
ret = wilc_wlan_firmware_download(wilc, wilc->firmware->data,
wilc->firmware->size);
if (ret)
return ret;
release_firmware(wilc->firmware);
wilc->firmware = NULL;
netdev_dbg(dev, "Download Succeeded\n");
return 0;
}
static int wilc_init_fw_config(struct net_device *dev, struct wilc_vif *vif)
{
struct wilc_priv *priv = &vif->priv;
struct host_if_drv *hif_drv;
u8 b;
u16 hw;
u32 w;
netdev_dbg(dev, "Start configuring Firmware\n");
hif_drv = (struct host_if_drv *)priv->hif_drv;
netdev_dbg(dev, "Host = %p\n", hif_drv);
w = vif->iftype;
cpu_to_le32s(&w);
if (!wilc_wlan_cfg_set(vif, 1, WID_SET_OPERATION_MODE, (u8 *)&w, 4,
0, 0))
goto fail;
b = WILC_FW_BSS_TYPE_INFRA;
if (!wilc_wlan_cfg_set(vif, 0, WID_BSS_TYPE, &b, 1, 0, 0))
goto fail;
b = WILC_FW_TX_RATE_AUTO;
if (!wilc_wlan_cfg_set(vif, 0, WID_CURRENT_TX_RATE, &b, 1, 0, 0))
goto fail;
b = WILC_FW_OPER_MODE_G_MIXED_11B_2;
if (!wilc_wlan_cfg_set(vif, 0, WID_11G_OPERATING_MODE, &b, 1, 0, 0))
goto fail;
b = WILC_FW_PREAMBLE_AUTO;
if (!wilc_wlan_cfg_set(vif, 0, WID_PREAMBLE, &b, 1, 0, 0))
goto fail;
b = WILC_FW_11N_PROT_AUTO;
if (!wilc_wlan_cfg_set(vif, 0, WID_11N_PROT_MECH, &b, 1, 0, 0))
goto fail;
b = WILC_FW_ACTIVE_SCAN;
if (!wilc_wlan_cfg_set(vif, 0, WID_SCAN_TYPE, &b, 1, 0, 0))
goto fail;
b = WILC_FW_SITE_SURVEY_OFF;
if (!wilc_wlan_cfg_set(vif, 0, WID_SITE_SURVEY, &b, 1, 0, 0))
goto fail;
hw = 0xffff;
cpu_to_le16s(&hw);
if (!wilc_wlan_cfg_set(vif, 0, WID_RTS_THRESHOLD, (u8 *)&hw, 2, 0, 0))
goto fail;
hw = 2346;
cpu_to_le16s(&hw);
if (!wilc_wlan_cfg_set(vif, 0, WID_FRAG_THRESHOLD, (u8 *)&hw, 2, 0, 0))
goto fail;
b = 0;
if (!wilc_wlan_cfg_set(vif, 0, WID_BCAST_SSID, &b, 1, 0, 0))
goto fail;
b = 1;
if (!wilc_wlan_cfg_set(vif, 0, WID_QOS_ENABLE, &b, 1, 0, 0))
goto fail;
b = WILC_FW_NO_POWERSAVE;
if (!wilc_wlan_cfg_set(vif, 0, WID_POWER_MANAGEMENT, &b, 1, 0, 0))
goto fail;
b = WILC_FW_SEC_NO;
if (!wilc_wlan_cfg_set(vif, 0, WID_11I_MODE, &b, 1, 0, 0))
goto fail;
b = WILC_FW_AUTH_OPEN_SYSTEM;
if (!wilc_wlan_cfg_set(vif, 0, WID_AUTH_TYPE, &b, 1, 0, 0))
goto fail;
b = 3;
if (!wilc_wlan_cfg_set(vif, 0, WID_LISTEN_INTERVAL, &b, 1, 0, 0))
goto fail;
b = 3;
if (!wilc_wlan_cfg_set(vif, 0, WID_DTIM_PERIOD, &b, 1, 0, 0))
goto fail;
b = WILC_FW_ACK_POLICY_NORMAL;
if (!wilc_wlan_cfg_set(vif, 0, WID_ACK_POLICY, &b, 1, 0, 0))
goto fail;
b = 0;
if (!wilc_wlan_cfg_set(vif, 0, WID_USER_CONTROL_ON_TX_POWER, &b, 1,
0, 0))
goto fail;
b = 48;
if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11A, &b, 1, 0, 0))
goto fail;
b = 28;
if (!wilc_wlan_cfg_set(vif, 0, WID_TX_POWER_LEVEL_11B, &b, 1, 0, 0))
goto fail;
hw = 100;
cpu_to_le16s(&hw);
if (!wilc_wlan_cfg_set(vif, 0, WID_BEACON_INTERVAL, (u8 *)&hw, 2, 0, 0))
goto fail;
b = WILC_FW_REKEY_POLICY_DISABLE;
if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_POLICY, &b, 1, 0, 0))
goto fail;
w = 84600;
cpu_to_le32s(&w);
if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PERIOD, (u8 *)&w, 4, 0, 0))
goto fail;
w = 500;
cpu_to_le32s(&w);
if (!wilc_wlan_cfg_set(vif, 0, WID_REKEY_PACKET_COUNT, (u8 *)&w, 4, 0,
0))
goto fail;
b = 1;
if (!wilc_wlan_cfg_set(vif, 0, WID_SHORT_SLOT_ALLOWED, &b, 1, 0,
0))
goto fail;
b = WILC_FW_ERP_PROT_SELF_CTS;
if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ERP_PROT_TYPE, &b, 1, 0, 0))
goto fail;
b = 1;
if (!wilc_wlan_cfg_set(vif, 0, WID_11N_ENABLE, &b, 1, 0, 0))
goto fail;
b = WILC_FW_11N_OP_MODE_HT_MIXED;
if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OPERATING_MODE, &b, 1, 0, 0))
goto fail;
b = 1;
if (!wilc_wlan_cfg_set(vif, 0, WID_11N_TXOP_PROT_DISABLE, &b, 1, 0, 0))
goto fail;
b = WILC_FW_OBBS_NONHT_DETECT_PROTECT_REPORT;
if (!wilc_wlan_cfg_set(vif, 0, WID_11N_OBSS_NONHT_DETECTION, &b, 1,
0, 0))
goto fail;
b = WILC_FW_HT_PROT_RTS_CTS_NONHT;
if (!wilc_wlan_cfg_set(vif, 0, WID_11N_HT_PROT_TYPE, &b, 1, 0, 0))
goto fail;
b = 0;
if (!wilc_wlan_cfg_set(vif, 0, WID_11N_RIFS_PROT_ENABLE, &b, 1, 0,
0))
goto fail;
b = 7;
if (!wilc_wlan_cfg_set(vif, 0, WID_11N_CURRENT_TX_MCS, &b, 1, 0, 0))
goto fail;
b = 1;
if (!wilc_wlan_cfg_set(vif, 0, WID_11N_IMMEDIATE_BA_ENABLED, &b, 1,
1, 0))
goto fail;
return 0;
fail:
return -EINVAL;
}
static void wlan_deinitialize_threads(struct net_device *dev)
{
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wl = vif->wilc;
wl->close = 1;
complete(&wl->txq_event);
if (wl->txq_thread) {
kthread_stop(wl->txq_thread);
wl->txq_thread = NULL;
}
}
static void wilc_wlan_deinitialize(struct net_device *dev)
{
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wl = vif->wilc;
if (!wl) {
netdev_err(dev, "wl is NULL\n");
return;
}
if (wl->initialized) {
netdev_info(dev, "Deinitializing wilc1000...\n");
if (!wl->dev_irq_num &&
wl->hif_func->disable_interrupt) {
mutex_lock(&wl->hif_cs);
wl->hif_func->disable_interrupt(wl);
mutex_unlock(&wl->hif_cs);
}
complete(&wl->txq_event);
wlan_deinitialize_threads(dev);
deinit_irq(dev);
wilc_wlan_stop(wl, vif);
wilc_wlan_cleanup(dev);
wl->initialized = false;
netdev_dbg(dev, "wilc1000 deinitialization Done\n");
} else {
netdev_dbg(dev, "wilc1000 is not initialized\n");
}
}
static int wlan_initialize_threads(struct net_device *dev)
{
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
wilc->txq_thread = kthread_run(wilc_txq_task, (void *)wilc,
"%s-tx", dev->name);
if (IS_ERR(wilc->txq_thread)) {
netdev_err(dev, "couldn't create TXQ thread\n");
wilc->close = 1;
return PTR_ERR(wilc->txq_thread);
}
wait_for_completion(&wilc->txq_thread_started);
return 0;
}
static int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif)
{
int ret = 0;
struct wilc *wl = vif->wilc;
if (!wl->initialized) {
wl->mac_status = WILC_MAC_STATUS_INIT;
wl->close = 0;
ret = wilc_wlan_init(dev);
if (ret)
return ret;
ret = wlan_initialize_threads(dev);
if (ret)
goto fail_wilc_wlan;
if (wl->dev_irq_num && init_irq(dev)) {
ret = -EIO;
goto fail_threads;
}
if (!wl->dev_irq_num &&
wl->hif_func->enable_interrupt &&
wl->hif_func->enable_interrupt(wl)) {
ret = -EIO;
goto fail_irq_init;
}
ret = wilc_wlan_get_firmware(dev);
if (ret)
goto fail_irq_enable;
ret = wilc_firmware_download(dev);
if (ret)
goto fail_irq_enable;
ret = wilc_start_firmware(dev);
if (ret)
goto fail_irq_enable;
if (wilc_wlan_cfg_get(vif, 1, WID_FIRMWARE_VERSION, 1, 0)) {
int size;
char firmware_ver[WILC_MAX_FW_VERSION_STR_SIZE];
size = wilc_wlan_cfg_get_val(wl, WID_FIRMWARE_VERSION,
firmware_ver,
sizeof(firmware_ver));
firmware_ver[size] = '\0';
netdev_dbg(dev, "Firmware Ver = %s\n", firmware_ver);
}
ret = wilc_init_fw_config(dev, vif);
if (ret) {
netdev_err(dev, "Failed to configure firmware\n");
goto fail_fw_start;
}
wl->initialized = true;
return 0;
fail_fw_start:
wilc_wlan_stop(wl, vif);
fail_irq_enable:
if (!wl->dev_irq_num &&
wl->hif_func->disable_interrupt)
wl->hif_func->disable_interrupt(wl);
fail_irq_init:
if (wl->dev_irq_num)
deinit_irq(dev);
fail_threads:
wlan_deinitialize_threads(dev);
fail_wilc_wlan:
wilc_wlan_cleanup(dev);
netdev_err(dev, "WLAN initialization FAILED\n");
} else {
netdev_dbg(dev, "wilc1000 already initialized\n");
}
return ret;
}
static int mac_init_fn(struct net_device *ndev)
{
netif_start_queue(ndev);
netif_stop_queue(ndev);
return 0;
}
static int wilc_mac_open(struct net_device *ndev)
{
struct wilc_vif *vif = netdev_priv(ndev);
struct wilc *wl = vif->wilc;
int ret = 0;
struct mgmt_frame_regs mgmt_regs = {};
if (!wl || !wl->dev) {
netdev_err(ndev, "device not ready\n");
return -ENODEV;
}
netdev_dbg(ndev, "MAC OPEN[%p]\n", ndev);
ret = wilc_init_host_int(ndev);
if (ret)
return ret;
ret = wilc_wlan_initialize(ndev, vif);
if (ret) {
wilc_deinit_host_int(ndev);
return ret;
}
wilc_set_operation_mode(vif, wilc_get_vif_idx(vif), vif->iftype,
vif->idx);
netdev_dbg(ndev, "Mac address: %pM\n", ndev->dev_addr);
ret = wilc_set_mac_address(vif, ndev->dev_addr);
if (ret) {
netdev_err(ndev, "Failed to enforce MAC address in chip");
wilc_deinit_host_int(ndev);
if (!wl->open_ifcs)
wilc_wlan_deinitialize(ndev);
return ret;
}
mgmt_regs.interface_stypes = vif->mgmt_reg_stypes;
vif->mgmt_reg_stypes = 0;
wilc_update_mgmt_frame_registrations(vif->ndev->ieee80211_ptr->wiphy,
vif->ndev->ieee80211_ptr,
&mgmt_regs);
netif_wake_queue(ndev);
wl->open_ifcs++;
vif->mac_opened = 1;
return 0;
}
static struct net_device_stats *mac_stats(struct net_device *dev)
{
struct wilc_vif *vif = netdev_priv(dev);
return &vif->netstats;
}
static int wilc_set_mac_addr(struct net_device *dev, void *p)
{
int result;
struct wilc_vif *vif = netdev_priv(dev);
struct wilc *wilc = vif->wilc;
struct sockaddr *addr = (struct sockaddr *)p;
unsigned char mac_addr[ETH_ALEN];
struct wilc_vif *tmp_vif;
int srcu_idx;
if (!is_valid_ether_addr(addr->sa_data))
return -EADDRNOTAVAIL;
if (!vif->mac_opened) {
eth_commit_mac_addr_change(dev, p);
return 0;
}
srcu_idx = srcu_read_lock(&wilc->srcu);
wilc_for_each_vif(wilc, tmp_vif) {
wilc_get_mac_address(tmp_vif, mac_addr);
if (ether_addr_equal(addr->sa_data, mac_addr)) {
if (vif != tmp_vif) {
srcu_read_unlock(&wilc->srcu, srcu_idx);
return -EADDRNOTAVAIL;
}
srcu_read_unlock(&wilc->srcu, srcu_idx);
return 0;
}
}
srcu_read_unlock(&wilc->srcu, srcu_idx);
result = wilc_set_mac_address(vif, addr->sa_data);
if (result)
return result;
eth_commit_mac_addr_change(dev, p);
return result;
}
static void wilc_set_multicast_list(struct net_device *dev)
{
struct netdev_hw_addr *ha;
struct wilc_vif *vif = netdev_priv(dev);
int i;
u8 *mc_list;
u8 *cur_mc;
if (dev->flags & IFF_PROMISC)
return;
if (dev->flags & IFF_ALLMULTI ||
dev->mc.count > WILC_MULTICAST_TABLE_SIZE) {
wilc_setup_multicast_filter(vif, 0, 0, NULL);
return;
}
if (dev->mc.count == 0) {
wilc_setup_multicast_filter(vif, 1, 0, NULL);
return;
}
mc_list = kmalloc_array(dev->mc.count, ETH_ALEN, GFP_ATOMIC);
if (!mc_list)
return;
cur_mc = mc_list;
i = 0;
netdev_for_each_mc_addr(ha, dev) {
memcpy(cur_mc, ha->addr, ETH_ALEN);
netdev_dbg(dev, "Entry[%d]: %pM\n", i, cur_mc);
i++;
cur_mc += ETH_ALEN;
}
if (wilc_setup_multicast_filter(vif, 1, dev->mc.count, mc_list))
kfree(mc_list);
}
static void wilc_tx_complete(void *priv, int status)
{
struct tx_complete_data *pv_data = priv;
dev_kfree_skb(pv_data->skb);
kfree(pv_data);
}
netdev_tx_t wilc_mac_xmit(struct sk_buff *skb, struct net_device *ndev)
{
struct wilc_vif *vif = netdev_priv(ndev);
struct wilc *wilc = vif->wilc;
struct tx_complete_data *tx_data = NULL;
int queue_count;
if (skb->dev != ndev) {
netdev_err(ndev, "Packet not destined to this device\n");
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
tx_data = kmalloc_obj(*tx_data, GFP_ATOMIC);
if (!tx_data) {
dev_kfree_skb(skb);
netif_wake_queue(ndev);
return NETDEV_TX_OK;
}
tx_data->buff = skb->data;
tx_data->size = skb->len;
tx_data->skb = skb;
vif->netstats.tx_packets++;
vif->netstats.tx_bytes += tx_data->size;
queue_count = wilc_wlan_txq_add_net_pkt(ndev, tx_data,
tx_data->buff, tx_data->size,
wilc_tx_complete);
if (queue_count > FLOW_CONTROL_UPPER_THRESHOLD) {
int srcu_idx;
struct wilc_vif *vif;
srcu_idx = srcu_read_lock(&wilc->srcu);
wilc_for_each_vif(wilc, vif) {
if (vif->mac_opened)
netif_stop_queue(vif->ndev);
}
srcu_read_unlock(&wilc->srcu, srcu_idx);
}
return NETDEV_TX_OK;
}
static int wilc_mac_close(struct net_device *ndev)
{
struct wilc_vif *vif = netdev_priv(ndev);
struct wilc *wl = vif->wilc;
netdev_dbg(ndev, "Mac close\n");
if (wl->open_ifcs > 0)
wl->open_ifcs--;
else
return 0;
if (vif->ndev) {
netif_stop_queue(vif->ndev);
wilc_handle_disconnect(vif);
wilc_deinit_host_int(vif->ndev);
}
if (wl->open_ifcs == 0) {
netdev_dbg(ndev, "Deinitializing wilc1000\n");
wl->close = 1;
wilc_wlan_deinitialize(ndev);
}
vif->mac_opened = 0;
return 0;
}
void wilc_frmw_to_host(struct wilc *wilc, u8 *buff, u32 size,
u32 pkt_offset)
{
unsigned char *buff_to_send = NULL;
struct net_device *wilc_netdev;
unsigned int frame_len = 0;
struct wilc_vif *vif;
struct sk_buff *skb;
int srcu_idx;
int stats;
if (!wilc)
return;
srcu_idx = srcu_read_lock(&wilc->srcu);
wilc_netdev = get_if_handler(wilc, buff);
if (!wilc_netdev)
goto out;
buff += pkt_offset;
vif = netdev_priv(wilc_netdev);
if (size > 0) {
frame_len = size;
buff_to_send = buff;
skb = dev_alloc_skb(frame_len);
if (!skb)
goto out;
skb->dev = wilc_netdev;
skb_put_data(skb, buff_to_send, frame_len);
skb->protocol = eth_type_trans(skb, wilc_netdev);
vif->netstats.rx_packets++;
vif->netstats.rx_bytes += frame_len;
skb->ip_summed = CHECKSUM_UNNECESSARY;
stats = netif_rx(skb);
netdev_dbg(wilc_netdev, "netif_rx ret value is: %d\n", stats);
}
out:
srcu_read_unlock(&wilc->srcu, srcu_idx);
}
void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size, bool is_auth)
{
int srcu_idx;
struct wilc_vif *vif;
srcu_idx = srcu_read_lock(&wilc->srcu);
wilc_for_each_vif(wilc, vif) {
struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)buff;
u16 type = le16_to_cpup((__le16 *)buff);
u32 type_bit = BIT(type >> 4);
u32 auth_bit = BIT(IEEE80211_STYPE_AUTH >> 4);
if ((vif->mgmt_reg_stypes & auth_bit &&
ieee80211_is_auth(mgmt->frame_control)) &&
vif->iftype == WILC_STATION_MODE && is_auth) {
wilc_wfi_mgmt_frame_rx(vif, buff, size);
break;
}
if (vif->priv.p2p_listen_state &&
vif->mgmt_reg_stypes & type_bit)
wilc_wfi_p2p_rx(vif, buff, size);
if (vif->monitor_flag)
wilc_wfi_monitor_rx(wilc->monitor_dev, buff, size);
}
srcu_read_unlock(&wilc->srcu, srcu_idx);
}
static const struct net_device_ops wilc_netdev_ops = {
.ndo_init = mac_init_fn,
.ndo_open = wilc_mac_open,
.ndo_stop = wilc_mac_close,
.ndo_set_mac_address = wilc_set_mac_addr,
.ndo_start_xmit = wilc_mac_xmit,
.ndo_get_stats = mac_stats,
.ndo_set_rx_mode = wilc_set_multicast_list,
};
void wilc_netdev_cleanup(struct wilc *wilc)
{
struct wilc_vif *vif, *vif_tmp;
if (!wilc)
return;
if (wilc->firmware) {
release_firmware(wilc->firmware);
wilc->firmware = NULL;
}
list_for_each_entry_safe(vif, vif_tmp, &wilc->vif_list, list) {
mutex_lock(&wilc->vif_mutex);
list_del_rcu(&vif->list);
wilc->vif_num--;
mutex_unlock(&wilc->vif_mutex);
synchronize_srcu(&wilc->srcu);
if (vif->ndev)
unregister_netdev(vif->ndev);
}
wilc_wfi_deinit_mon_interface(wilc, false);
destroy_workqueue(wilc->hif_workqueue);
wilc_wlan_cfg_deinit(wilc);
wlan_deinit_locks(wilc);
}
EXPORT_SYMBOL_GPL(wilc_netdev_cleanup);
static u8 wilc_get_available_idx(struct wilc *wl)
{
int idx = 0;
struct wilc_vif *vif;
int srcu_idx;
srcu_idx = srcu_read_lock(&wl->srcu);
wilc_for_each_vif(wl, vif) {
if (vif->idx == 0)
idx = 1;
else
idx = 0;
}
srcu_read_unlock(&wl->srcu, srcu_idx);
return idx;
}
struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
int vif_type, enum nl80211_iftype type,
bool rtnl_locked)
{
u8 mac_address[ETH_ALEN];
struct net_device *ndev;
struct wilc_vif *vif;
int ret;
ndev = alloc_etherdev(sizeof(*vif));
if (!ndev)
return ERR_PTR(-ENOMEM);
vif = netdev_priv(ndev);
ndev->ieee80211_ptr = &vif->priv.wdev;
strcpy(ndev->name, name);
vif->wilc = wl;
vif->ndev = ndev;
ndev->ml_priv = vif;
ndev->netdev_ops = &wilc_netdev_ops;
SET_NETDEV_DEV(ndev, wiphy_dev(wl->wiphy));
vif->priv.wdev.wiphy = wl->wiphy;
vif->priv.wdev.netdev = ndev;
vif->priv.wdev.iftype = type;
vif->priv.dev = ndev;
ndev->needs_free_netdev = true;
vif->iftype = vif_type;
vif->idx = wilc_get_available_idx(wl);
vif->mac_opened = 0;
memcpy(mac_address, wl->nv_mac_address, ETH_ALEN);
if (vif->idx)
mac_address[0] |= 0x2;
eth_hw_addr_set(vif->ndev, mac_address);
mutex_lock(&wl->vif_mutex);
list_add_tail_rcu(&vif->list, &wl->vif_list);
wl->vif_num += 1;
mutex_unlock(&wl->vif_mutex);
synchronize_srcu(&wl->srcu);
if (rtnl_locked)
ret = cfg80211_register_netdevice(ndev);
else
ret = register_netdev(ndev);
if (ret) {
ret = -EFAULT;
goto error_remove_vif;
}
return vif;
error_remove_vif:
mutex_lock(&wl->vif_mutex);
list_del_rcu(&vif->list);
wl->vif_num -= 1;
mutex_unlock(&wl->vif_mutex);
synchronize_srcu(&wl->srcu);
free_netdev(ndev);
return ERR_PTR(ret);
}
EXPORT_SYMBOL_GPL(wilc_netdev_ifc_init);
MODULE_DESCRIPTION("Atmel WILC1000 core wireless driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(WILC1000_FW(WILC1000_API_VER));
MODULE_FIRMWARE(WILC3000_FW(WILC3000_API_VER));
