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OpenCloudOS-Kernel/drivers/net/wireless/ath/ath6kl/main.c

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/*
* Copyright (c) 2004-2011 Atheros Communications Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "core.h"
#include "hif-ops.h"
#include "cfg80211.h"
#include "target.h"
#include "debug.h"
struct ath6kl_sta *ath6kl_find_sta(struct ath6kl *ar, u8 *node_addr)
{
struct ath6kl_sta *conn = NULL;
u8 i, max_conn;
max_conn = (ar->nw_type == AP_NETWORK) ? AP_MAX_NUM_STA : 0;
for (i = 0; i < max_conn; i++) {
if (memcmp(node_addr, ar->sta_list[i].mac, ETH_ALEN) == 0) {
conn = &ar->sta_list[i];
break;
}
}
return conn;
}
struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid)
{
struct ath6kl_sta *conn = NULL;
u8 ctr;
for (ctr = 0; ctr < AP_MAX_NUM_STA; ctr++) {
if (ar->sta_list[ctr].aid == aid) {
conn = &ar->sta_list[ctr];
break;
}
}
return conn;
}
static void ath6kl_add_new_sta(struct ath6kl *ar, u8 *mac, u16 aid, u8 *wpaie,
u8 ielen, u8 keymgmt, u8 ucipher, u8 auth)
{
struct ath6kl_sta *sta;
u8 free_slot;
free_slot = aid - 1;
sta = &ar->sta_list[free_slot];
memcpy(sta->mac, mac, ETH_ALEN);
if (ielen <= ATH6KL_MAX_IE)
memcpy(sta->wpa_ie, wpaie, ielen);
sta->aid = aid;
sta->keymgmt = keymgmt;
sta->ucipher = ucipher;
sta->auth = auth;
ar->sta_list_index = ar->sta_list_index | (1 << free_slot);
ar->ap_stats.sta[free_slot].aid = cpu_to_le32(aid);
}
static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i)
{
struct ath6kl_sta *sta = &ar->sta_list[i];
/* empty the queued pkts in the PS queue if any */
spin_lock_bh(&sta->psq_lock);
skb_queue_purge(&sta->psq);
spin_unlock_bh(&sta->psq_lock);
memset(&ar->ap_stats.sta[sta->aid - 1], 0,
sizeof(struct wmi_per_sta_stat));
memset(sta->mac, 0, ETH_ALEN);
memset(sta->wpa_ie, 0, ATH6KL_MAX_IE);
sta->aid = 0;
sta->sta_flags = 0;
ar->sta_list_index = ar->sta_list_index & ~(1 << i);
}
static u8 ath6kl_remove_sta(struct ath6kl *ar, u8 *mac, u16 reason)
{
u8 i, removed = 0;
if (is_zero_ether_addr(mac))
return removed;
if (is_broadcast_ether_addr(mac)) {
ath6kl_dbg(ATH6KL_DBG_TRC, "deleting all station\n");
for (i = 0; i < AP_MAX_NUM_STA; i++) {
if (!is_zero_ether_addr(ar->sta_list[i].mac)) {
ath6kl_sta_cleanup(ar, i);
removed = 1;
}
}
} else {
for (i = 0; i < AP_MAX_NUM_STA; i++) {
if (memcmp(ar->sta_list[i].mac, mac, ETH_ALEN) == 0) {
ath6kl_dbg(ATH6KL_DBG_TRC,
"deleting station %pM aid=%d reason=%d\n",
mac, ar->sta_list[i].aid, reason);
ath6kl_sta_cleanup(ar, i);
removed = 1;
break;
}
}
}
return removed;
}
enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac)
{
struct ath6kl *ar = devt;
return ar->ac2ep_map[ac];
}
struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar)
{
struct ath6kl_cookie *cookie;
cookie = ar->cookie_list;
if (cookie != NULL) {
ar->cookie_list = cookie->arc_list_next;
ar->cookie_count--;
}
return cookie;
}
void ath6kl_cookie_init(struct ath6kl *ar)
{
u32 i;
ar->cookie_list = NULL;
ar->cookie_count = 0;
memset(ar->cookie_mem, 0, sizeof(ar->cookie_mem));
for (i = 0; i < MAX_COOKIE_NUM; i++)
ath6kl_free_cookie(ar, &ar->cookie_mem[i]);
}
void ath6kl_cookie_cleanup(struct ath6kl *ar)
{
ar->cookie_list = NULL;
ar->cookie_count = 0;
}
void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie)
{
/* Insert first */
if (!ar || !cookie)
return;
cookie->arc_list_next = ar->cookie_list;
ar->cookie_list = cookie;
ar->cookie_count++;
}
/* set the window address register (using 4-byte register access ). */
static int ath6kl_set_addrwin_reg(struct ath6kl *ar, u32 reg_addr, u32 addr)
{
int status;
s32 i;
__le32 addr_val;
/*
* Write bytes 1,2,3 of the register to set the upper address bytes,
* the LSB is written last to initiate the access cycle
*/
for (i = 1; i <= 3; i++) {
/*
* Fill the buffer with the address byte value we want to
* hit 4 times. No need to worry about endianness as the
* same byte is copied to all four bytes of addr_val at
* any time.
*/
memset((u8 *)&addr_val, ((u8 *)&addr)[i], 4);
/*
* Hit each byte of the register address with a 4-byte
* write operation to the same address, this is a harmless
* operation.
*/
status = hif_read_write_sync(ar, reg_addr + i, (u8 *)&addr_val,
4, HIF_WR_SYNC_BYTE_FIX);
if (status)
break;
}
if (status) {
ath6kl_err("failed to write initial bytes of 0x%x to window reg: 0x%X\n",
addr, reg_addr);
return status;
}
/*
* Write the address register again, this time write the whole
* 4-byte value. The effect here is that the LSB write causes the
* cycle to start, the extra 3 byte write to bytes 1,2,3 has no
* effect since we are writing the same values again
*/
addr_val = cpu_to_le32(addr);
status = hif_read_write_sync(ar, reg_addr,
(u8 *)&(addr_val),
4, HIF_WR_SYNC_BYTE_INC);
if (status) {
ath6kl_err("failed to write 0x%x to window reg: 0x%X\n",
addr, reg_addr);
return status;
}
return 0;
}
/*
* Read from the hardware through its diagnostic window. No cooperation
* from the firmware is required for this.
*/
int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value)
{
int ret;
/* set window register to start read cycle */
ret = ath6kl_set_addrwin_reg(ar, WINDOW_READ_ADDR_ADDRESS, address);
if (ret)
return ret;
/* read the data */
ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) value,
sizeof(*value), HIF_RD_SYNC_BYTE_INC);
if (ret) {
ath6kl_warn("failed to read32 through diagnose window: %d\n",
ret);
return ret;
}
return 0;
}
/*
* Write to the ATH6KL through its diagnostic window. No cooperation from
* the Target is required for this.
*/
int ath6kl_diag_write32(struct ath6kl *ar, u32 address, __le32 value)
{
int ret;
/* set write data */
ret = hif_read_write_sync(ar, WINDOW_DATA_ADDRESS, (u8 *) &value,
sizeof(value), HIF_WR_SYNC_BYTE_INC);
if (ret) {
ath6kl_err("failed to write 0x%x during diagnose window to 0x%d\n",
address, value);
return ret;
}
/* set window register, which starts the write cycle */
return ath6kl_set_addrwin_reg(ar, WINDOW_WRITE_ADDR_ADDRESS,
address);
}
int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length)
{
u32 count, *buf = data;
int ret;
if (WARN_ON(length % 4))
return -EINVAL;
for (count = 0; count < length / 4; count++, address += 4) {
ret = ath6kl_diag_read32(ar, address, &buf[count]);
if (ret)
return ret;
}
return 0;
}
int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length)
{
u32 count;
__le32 *buf = data;
int ret;
if (WARN_ON(length % 4))
return -EINVAL;
for (count = 0; count < length / 4; count++, address += 4) {
ret = ath6kl_diag_write32(ar, address, buf[count]);
if (ret)
return ret;
}
return 0;
}
int ath6kl_read_fwlogs(struct ath6kl *ar)
{
struct ath6kl_dbglog_hdr debug_hdr;
struct ath6kl_dbglog_buf debug_buf;
u32 address, length, dropped, firstbuf, debug_hdr_addr;
int ret = 0, loop;
u8 *buf;
buf = kmalloc(ATH6KL_FWLOG_PAYLOAD_SIZE, GFP_KERNEL);
if (!buf)
return -ENOMEM;
address = TARG_VTOP(ar->target_type,
ath6kl_get_hi_item_addr(ar,
HI_ITEM(hi_dbglog_hdr)));
ret = ath6kl_diag_read32(ar, address, &debug_hdr_addr);
if (ret)
goto out;
/* Get the contents of the ring buffer */
if (debug_hdr_addr == 0) {
ath6kl_warn("Invalid address for debug_hdr_addr\n");
ret = -EINVAL;
goto out;
}
address = TARG_VTOP(ar->target_type, debug_hdr_addr);
ath6kl_diag_read(ar, address, &debug_hdr, sizeof(debug_hdr));
address = TARG_VTOP(ar->target_type,
le32_to_cpu(debug_hdr.dbuf_addr));
firstbuf = address;
dropped = le32_to_cpu(debug_hdr.dropped);
ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
loop = 100;
do {
address = TARG_VTOP(ar->target_type,
le32_to_cpu(debug_buf.buffer_addr));
length = le32_to_cpu(debug_buf.length);
if (length != 0 && (le32_to_cpu(debug_buf.length) <=
le32_to_cpu(debug_buf.bufsize))) {
length = ALIGN(length, 4);
ret = ath6kl_diag_read(ar, address,
buf, length);
if (ret)
goto out;
ath6kl_debug_fwlog_event(ar, buf, length);
}
address = TARG_VTOP(ar->target_type,
le32_to_cpu(debug_buf.next));
ath6kl_diag_read(ar, address, &debug_buf, sizeof(debug_buf));
if (ret)
goto out;
loop--;
if (WARN_ON(loop == 0)) {
ret = -ETIMEDOUT;
goto out;
}
} while (address != firstbuf);
out:
kfree(buf);
return ret;
}
/* FIXME: move to a better place, target.h? */
#define AR6003_RESET_CONTROL_ADDRESS 0x00004000
#define AR6004_RESET_CONTROL_ADDRESS 0x00004000
static void ath6kl_reset_device(struct ath6kl *ar, u32 target_type,
bool wait_fot_compltn, bool cold_reset)
{
int status = 0;
u32 address;
__le32 data;
if (target_type != TARGET_TYPE_AR6003 &&
target_type != TARGET_TYPE_AR6004)
return;
data = cold_reset ? cpu_to_le32(RESET_CONTROL_COLD_RST) :
cpu_to_le32(RESET_CONTROL_MBOX_RST);
switch (target_type) {
case TARGET_TYPE_AR6003:
address = AR6003_RESET_CONTROL_ADDRESS;
break;
case TARGET_TYPE_AR6004:
address = AR6004_RESET_CONTROL_ADDRESS;
break;
default:
address = AR6003_RESET_CONTROL_ADDRESS;
break;
}
status = ath6kl_diag_write32(ar, address, data);
if (status)
ath6kl_err("failed to reset target\n");
}
void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile,
bool get_dbglogs)
{
struct ath6kl *ar = ath6kl_priv(dev);
static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
bool discon_issued;
netif_stop_queue(dev);
/* disable the target and the interrupts associated with it */
if (test_bit(WMI_READY, &ar->flag)) {
discon_issued = (test_bit(CONNECTED, &ar->flag) ||
test_bit(CONNECT_PEND, &ar->flag));
ath6kl_disconnect(ar);
if (!keep_profile)
ath6kl_init_profile_info(ar);
del_timer(&ar->disconnect_timer);
clear_bit(WMI_READY, &ar->flag);
ath6kl_wmi_shutdown(ar->wmi);
clear_bit(WMI_ENABLED, &ar->flag);
ar->wmi = NULL;
/*
* After wmi_shudown all WMI events will be dropped. We
* need to cleanup the buffers allocated in AP mode and
* give disconnect notification to stack, which usually
* happens in the disconnect_event. Simulate the disconnect
* event by calling the function directly. Sometimes
* disconnect_event will be received when the debug logs
* are collected.
*/
if (discon_issued)
ath6kl_disconnect_event(ar, DISCONNECT_CMD,
(ar->nw_type & AP_NETWORK) ?
bcast_mac : ar->bssid,
0, NULL, 0);
ar->user_key_ctrl = 0;
} else {
ath6kl_dbg(ATH6KL_DBG_TRC,
"%s: wmi is not ready 0x%p 0x%p\n",
__func__, ar, ar->wmi);
/* Shut down WMI if we have started it */
if (test_bit(WMI_ENABLED, &ar->flag)) {
ath6kl_dbg(ATH6KL_DBG_TRC,
"%s: shut down wmi\n", __func__);
ath6kl_wmi_shutdown(ar->wmi);
clear_bit(WMI_ENABLED, &ar->flag);
ar->wmi = NULL;
}
}
if (ar->htc_target) {
ath6kl_dbg(ATH6KL_DBG_TRC, "%s: shut down htc\n", __func__);
ath6kl_htc_stop(ar->htc_target);
}
/*
* Try to reset the device if we can. The driver may have been
* configure NOT to reset the target during a debug session.
*/
ath6kl_dbg(ATH6KL_DBG_TRC,
"attempting to reset target on instance destroy\n");
ath6kl_reset_device(ar, ar->target_type, true, true);
}
static void ath6kl_install_static_wep_keys(struct ath6kl *ar)
{
u8 index;
u8 keyusage;
for (index = WMI_MIN_KEY_INDEX; index <= WMI_MAX_KEY_INDEX; index++) {
if (ar->wep_key_list[index].key_len) {
keyusage = GROUP_USAGE;
if (index == ar->def_txkey_index)
keyusage |= TX_USAGE;
ath6kl_wmi_addkey_cmd(ar->wmi,
index,
WEP_CRYPT,
keyusage,
ar->wep_key_list[index].key_len,
NULL,
ar->wep_key_list[index].key,
KEY_OP_INIT_VAL, NULL,
NO_SYNC_WMIFLAG);
}
}
}
void ath6kl_connect_ap_mode_bss(struct ath6kl *ar, u16 channel)
{
struct ath6kl_req_key *ik;
int res;
u8 key_rsc[ATH6KL_KEY_SEQ_LEN];
ik = &ar->ap_mode_bkey;
ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "AP mode started on %u MHz\n", channel);
switch (ar->auth_mode) {
case NONE_AUTH:
if (ar->prwise_crypto == WEP_CRYPT)
ath6kl_install_static_wep_keys(ar);
break;
case WPA_PSK_AUTH:
case WPA2_PSK_AUTH:
case (WPA_PSK_AUTH | WPA2_PSK_AUTH):
if (!ik->valid)
break;
ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed addkey for "
"the initial group key for AP mode\n");
memset(key_rsc, 0, sizeof(key_rsc));
res = ath6kl_wmi_addkey_cmd(
ar->wmi, ik->key_index, ik->key_type,
GROUP_USAGE, ik->key_len, key_rsc, ik->key,
KEY_OP_INIT_VAL, NULL, SYNC_BOTH_WMIFLAG);
if (res) {
ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "Delayed "
"addkey failed: %d\n", res);
}
break;
}
ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
set_bit(CONNECTED, &ar->flag);
netif_carrier_on(ar->net_dev);
}
void ath6kl_connect_ap_mode_sta(struct ath6kl *ar, u16 aid, u8 *mac_addr,
u8 keymgmt, u8 ucipher, u8 auth,
u8 assoc_req_len, u8 *assoc_info)
{
u8 *ies = NULL, *wpa_ie = NULL, *pos;
size_t ies_len = 0;
struct station_info sinfo;
ath6kl_dbg(ATH6KL_DBG_TRC, "new station %pM aid=%d\n", mac_addr, aid);
if (assoc_req_len > sizeof(struct ieee80211_hdr_3addr)) {
struct ieee80211_mgmt *mgmt =
(struct ieee80211_mgmt *) assoc_info;
if (ieee80211_is_assoc_req(mgmt->frame_control) &&
assoc_req_len >= sizeof(struct ieee80211_hdr_3addr) +
sizeof(mgmt->u.assoc_req)) {
ies = mgmt->u.assoc_req.variable;
ies_len = assoc_info + assoc_req_len - ies;
} else if (ieee80211_is_reassoc_req(mgmt->frame_control) &&
assoc_req_len >= sizeof(struct ieee80211_hdr_3addr)
+ sizeof(mgmt->u.reassoc_req)) {
ies = mgmt->u.reassoc_req.variable;
ies_len = assoc_info + assoc_req_len - ies;
}
}
pos = ies;
while (pos && pos + 1 < ies + ies_len) {
if (pos + 2 + pos[1] > ies + ies_len)
break;
if (pos[0] == WLAN_EID_RSN)
wpa_ie = pos; /* RSN IE */
else if (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
pos[1] >= 4 &&
pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2) {
if (pos[5] == 0x01)
wpa_ie = pos; /* WPA IE */
else if (pos[5] == 0x04) {
wpa_ie = pos; /* WPS IE */
break; /* overrides WPA/RSN IE */
}
}
pos += 2 + pos[1];
}
ath6kl_add_new_sta(ar, mac_addr, aid, wpa_ie,
wpa_ie ? 2 + wpa_ie[1] : 0,
keymgmt, ucipher, auth);
/* send event to application */
memset(&sinfo, 0, sizeof(sinfo));
/* TODO: sinfo.generation */
sinfo.assoc_req_ies = ies;
sinfo.assoc_req_ies_len = ies_len;
sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
cfg80211_new_sta(ar->net_dev, mac_addr, &sinfo, GFP_KERNEL);
netif_wake_queue(ar->net_dev);
}
/* Functions for Tx credit handling */
void ath6k_credit_init(struct htc_credit_state_info *cred_info,
struct list_head *ep_list,
int tot_credits)
{
struct htc_endpoint_credit_dist *cur_ep_dist;
int count;
cred_info->cur_free_credits = tot_credits;
cred_info->total_avail_credits = tot_credits;
list_for_each_entry(cur_ep_dist, ep_list, list) {
if (cur_ep_dist->endpoint == ENDPOINT_0)
continue;
cur_ep_dist->cred_min = cur_ep_dist->cred_per_msg;
if (tot_credits > 4)
if ((cur_ep_dist->svc_id == WMI_DATA_BK_SVC) ||
(cur_ep_dist->svc_id == WMI_DATA_BE_SVC)) {
ath6kl_deposit_credit_to_ep(cred_info,
cur_ep_dist,
cur_ep_dist->cred_min);
cur_ep_dist->dist_flags |= HTC_EP_ACTIVE;
}
if (cur_ep_dist->svc_id == WMI_CONTROL_SVC) {
ath6kl_deposit_credit_to_ep(cred_info, cur_ep_dist,
cur_ep_dist->cred_min);
/*
* Control service is always marked active, it
* never goes inactive EVER.
*/
cur_ep_dist->dist_flags |= HTC_EP_ACTIVE;
} else if (cur_ep_dist->svc_id == WMI_DATA_BK_SVC)
/* this is the lowest priority data endpoint */
cred_info->lowestpri_ep_dist = cur_ep_dist->list;
/*
* Streams have to be created (explicit | implicit) for all
* kinds of traffic. BE endpoints are also inactive in the
* beginning. When BE traffic starts it creates implicit
* streams that redistributes credits.
*
* Note: all other endpoints have minimums set but are
* initially given NO credits. credits will be distributed
* as traffic activity demands
*/
}
WARN_ON(cred_info->cur_free_credits <= 0);
list_for_each_entry(cur_ep_dist, ep_list, list) {
if (cur_ep_dist->endpoint == ENDPOINT_0)
continue;
if (cur_ep_dist->svc_id == WMI_CONTROL_SVC)
cur_ep_dist->cred_norm = cur_ep_dist->cred_per_msg;
else {
/*
* For the remaining data endpoints, we assume that
* each cred_per_msg are the same. We use a simple
* calculation here, we take the remaining credits
* and determine how many max messages this can
* cover and then set each endpoint's normal value
* equal to 3/4 this amount.
*/
count = (cred_info->cur_free_credits /
cur_ep_dist->cred_per_msg)
* cur_ep_dist->cred_per_msg;
count = (count * 3) >> 2;
count = max(count, cur_ep_dist->cred_per_msg);
cur_ep_dist->cred_norm = count;
}
}
}
/* initialize and setup credit distribution */
int ath6k_setup_credit_dist(void *htc_handle,
struct htc_credit_state_info *cred_info)
{
u16 servicepriority[5];
memset(cred_info, 0, sizeof(struct htc_credit_state_info));
servicepriority[0] = WMI_CONTROL_SVC; /* highest */
servicepriority[1] = WMI_DATA_VO_SVC;
servicepriority[2] = WMI_DATA_VI_SVC;
servicepriority[3] = WMI_DATA_BE_SVC;
servicepriority[4] = WMI_DATA_BK_SVC; /* lowest */
/* set priority list */
ath6kl_htc_set_credit_dist(htc_handle, cred_info, servicepriority, 5);
return 0;
}
/* reduce an ep's credits back to a set limit */
static void ath6k_reduce_credits(struct htc_credit_state_info *cred_info,
struct htc_endpoint_credit_dist *ep_dist,
int limit)
{
int credits;
ep_dist->cred_assngd = limit;
if (ep_dist->credits <= limit)
return;
credits = ep_dist->credits - limit;
ep_dist->credits -= credits;
cred_info->cur_free_credits += credits;
}
static void ath6k_credit_update(struct htc_credit_state_info *cred_info,
struct list_head *epdist_list)
{
struct htc_endpoint_credit_dist *cur_dist_list;
list_for_each_entry(cur_dist_list, epdist_list, list) {
if (cur_dist_list->endpoint == ENDPOINT_0)
continue;
if (cur_dist_list->cred_to_dist > 0) {
cur_dist_list->credits +=
cur_dist_list->cred_to_dist;
cur_dist_list->cred_to_dist = 0;
if (cur_dist_list->credits >
cur_dist_list->cred_assngd)
ath6k_reduce_credits(cred_info,
cur_dist_list,
cur_dist_list->cred_assngd);
if (cur_dist_list->credits >
cur_dist_list->cred_norm)
ath6k_reduce_credits(cred_info, cur_dist_list,
cur_dist_list->cred_norm);
if (!(cur_dist_list->dist_flags & HTC_EP_ACTIVE)) {
if (cur_dist_list->txq_depth == 0)
ath6k_reduce_credits(cred_info,
cur_dist_list, 0);
}
}
}
}
/*
* HTC has an endpoint that needs credits, ep_dist is the endpoint in
* question.
*/
void ath6k_seek_credits(struct htc_credit_state_info *cred_info,
struct htc_endpoint_credit_dist *ep_dist)
{
struct htc_endpoint_credit_dist *curdist_list;
int credits = 0;
int need;
if (ep_dist->svc_id == WMI_CONTROL_SVC)
goto out;
if ((ep_dist->svc_id == WMI_DATA_VI_SVC) ||
(ep_dist->svc_id == WMI_DATA_VO_SVC))
if ((ep_dist->cred_assngd >= ep_dist->cred_norm))
goto out;
/*
* For all other services, we follow a simple algorithm of:
*
* 1. checking the free pool for credits
* 2. checking lower priority endpoints for credits to take
*/
credits = min(cred_info->cur_free_credits, ep_dist->seek_cred);
if (credits >= ep_dist->seek_cred)
goto out;
/*
* We don't have enough in the free pool, try taking away from
* lower priority services The rule for taking away credits:
*
* 1. Only take from lower priority endpoints
* 2. Only take what is allocated above the minimum (never
* starve an endpoint completely)
* 3. Only take what you need.
*/
list_for_each_entry_reverse(curdist_list,
&cred_info->lowestpri_ep_dist,
list) {
if (curdist_list == ep_dist)
break;
need = ep_dist->seek_cred - cred_info->cur_free_credits;
if ((curdist_list->cred_assngd - need) >=
curdist_list->cred_min) {
/*
* The current one has been allocated more than
* it's minimum and it has enough credits assigned
* above it's minimum to fulfill our need try to
* take away just enough to fulfill our need.
*/
ath6k_reduce_credits(cred_info, curdist_list,
curdist_list->cred_assngd - need);
if (cred_info->cur_free_credits >=
ep_dist->seek_cred)
break;
}
if (curdist_list->endpoint == ENDPOINT_0)
break;
}
credits = min(cred_info->cur_free_credits, ep_dist->seek_cred);
out:
/* did we find some credits? */
if (credits)
ath6kl_deposit_credit_to_ep(cred_info, ep_dist, credits);
ep_dist->seek_cred = 0;
}
/* redistribute credits based on activity change */
static void ath6k_redistribute_credits(struct htc_credit_state_info *info,
struct list_head *ep_dist_list)
{
struct htc_endpoint_credit_dist *curdist_list;
list_for_each_entry(curdist_list, ep_dist_list, list) {
if (curdist_list->endpoint == ENDPOINT_0)
continue;
if ((curdist_list->svc_id == WMI_DATA_BK_SVC) ||
(curdist_list->svc_id == WMI_DATA_BE_SVC))
curdist_list->dist_flags |= HTC_EP_ACTIVE;
if ((curdist_list->svc_id != WMI_CONTROL_SVC) &&
!(curdist_list->dist_flags & HTC_EP_ACTIVE)) {
if (curdist_list->txq_depth == 0)
ath6k_reduce_credits(info,
curdist_list, 0);
else
ath6k_reduce_credits(info,
curdist_list,
curdist_list->cred_min);
}
}
}
/*
*
* This function is invoked whenever endpoints require credit
* distributions. A lock is held while this function is invoked, this
* function shall NOT block. The ep_dist_list is a list of distribution
* structures in prioritized order as defined by the call to the
* htc_set_credit_dist() api.
*/
void ath6k_credit_distribute(struct htc_credit_state_info *cred_info,
struct list_head *ep_dist_list,
enum htc_credit_dist_reason reason)
{
switch (reason) {
case HTC_CREDIT_DIST_SEND_COMPLETE:
ath6k_credit_update(cred_info, ep_dist_list);
break;
case HTC_CREDIT_DIST_ACTIVITY_CHANGE:
ath6k_redistribute_credits(cred_info, ep_dist_list);
break;
default:
break;
}
WARN_ON(cred_info->cur_free_credits > cred_info->total_avail_credits);
WARN_ON(cred_info->cur_free_credits < 0);
}
void disconnect_timer_handler(unsigned long ptr)
{
struct net_device *dev = (struct net_device *)ptr;
struct ath6kl *ar = ath6kl_priv(dev);
ath6kl_init_profile_info(ar);
ath6kl_disconnect(ar);
}
void ath6kl_disconnect(struct ath6kl *ar)
{
if (test_bit(CONNECTED, &ar->flag) ||
test_bit(CONNECT_PEND, &ar->flag)) {
ath6kl_wmi_disconnect_cmd(ar->wmi);
/*
* Disconnect command is issued, clear the connect pending
* flag. The connected flag will be cleared in
* disconnect event notification.
*/
clear_bit(CONNECT_PEND, &ar->flag);
}
}
void ath6kl_deep_sleep_enable(struct ath6kl *ar)
{
switch (ar->sme_state) {
case SME_CONNECTING:
cfg80211_connect_result(ar->net_dev, ar->bssid, NULL, 0,
NULL, 0,
WLAN_STATUS_UNSPECIFIED_FAILURE,
GFP_KERNEL);
break;
case SME_CONNECTED:
default:
/*
* FIXME: oddly enough smeState is in DISCONNECTED during
* suspend, why? Need to send disconnected event in that
* state.
*/
cfg80211_disconnected(ar->net_dev, 0, NULL, 0, GFP_KERNEL);
break;
}
if (test_bit(CONNECTED, &ar->flag) ||
test_bit(CONNECT_PEND, &ar->flag))
ath6kl_wmi_disconnect_cmd(ar->wmi);
ar->sme_state = SME_DISCONNECTED;
/* disable scanning */
if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0, 0,
0, 0) != 0)
printk(KERN_WARNING "ath6kl: failed to disable scan "
"during suspend\n");
ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED);
}
/* WMI Event handlers */
static const char *get_hw_id_string(u32 id)
{
switch (id) {
case AR6003_REV1_VERSION:
return "1.0";
case AR6003_REV2_VERSION:
return "2.0";
case AR6003_REV3_VERSION:
return "2.1.1";
default:
return "unknown";
}
}
void ath6kl_ready_event(void *devt, u8 *datap, u32 sw_ver, u32 abi_ver)
{
struct ath6kl *ar = devt;
struct net_device *dev = ar->net_dev;
memcpy(dev->dev_addr, datap, ETH_ALEN);
ath6kl_dbg(ATH6KL_DBG_TRC, "%s: mac addr = %pM\n",
__func__, dev->dev_addr);
ar->version.wlan_ver = sw_ver;
ar->version.abi_ver = abi_ver;
snprintf(ar->wdev->wiphy->fw_version,
sizeof(ar->wdev->wiphy->fw_version),
"%u.%u.%u.%u",
(ar->version.wlan_ver & 0xf0000000) >> 28,
(ar->version.wlan_ver & 0x0f000000) >> 24,
(ar->version.wlan_ver & 0x00ff0000) >> 16,
(ar->version.wlan_ver & 0x0000ffff));
/* indicate to the waiting thread that the ready event was received */
set_bit(WMI_READY, &ar->flag);
wake_up(&ar->event_wq);
ath6kl_info("hw %s fw %s%s\n",
get_hw_id_string(ar->wdev->wiphy->hw_version),
ar->wdev->wiphy->fw_version,
test_bit(TESTMODE, &ar->flag) ? " testmode" : "");
}
void ath6kl_scan_complete_evt(struct ath6kl *ar, int status)
{
ath6kl_cfg80211_scan_complete_event(ar, status);
if (!ar->usr_bss_filter) {
clear_bit(CLEAR_BSSFILTER_ON_BEACON, &ar->flag);
ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
}
ath6kl_dbg(ATH6KL_DBG_WLAN_SCAN, "scan complete: %d\n", status);
}
void ath6kl_connect_event(struct ath6kl *ar, u16 channel, u8 *bssid,
u16 listen_int, u16 beacon_int,
enum network_type net_type, u8 beacon_ie_len,
u8 assoc_req_len, u8 assoc_resp_len,
u8 *assoc_info)
{
unsigned long flags;
ath6kl_cfg80211_connect_event(ar, channel, bssid,
listen_int, beacon_int,
net_type, beacon_ie_len,
assoc_req_len, assoc_resp_len,
assoc_info);
memcpy(ar->bssid, bssid, sizeof(ar->bssid));
ar->bss_ch = channel;
if ((ar->nw_type == INFRA_NETWORK))
ath6kl_wmi_listeninterval_cmd(ar->wmi, ar->listen_intvl_t,
ar->listen_intvl_b);
netif_wake_queue(ar->net_dev);
/* Update connect & link status atomically */
spin_lock_irqsave(&ar->lock, flags);
set_bit(CONNECTED, &ar->flag);
clear_bit(CONNECT_PEND, &ar->flag);
netif_carrier_on(ar->net_dev);
spin_unlock_irqrestore(&ar->lock, flags);
aggr_reset_state(ar->aggr_cntxt);
ar->reconnect_flag = 0;
if ((ar->nw_type == ADHOC_NETWORK) && ar->ibss_ps_enable) {
memset(ar->node_map, 0, sizeof(ar->node_map));
ar->node_num = 0;
ar->next_ep_id = ENDPOINT_2;
}
if (!ar->usr_bss_filter) {
set_bit(CLEAR_BSSFILTER_ON_BEACON, &ar->flag);
ath6kl_wmi_bssfilter_cmd(ar->wmi, CURRENT_BSS_FILTER, 0);
}
}
void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast)
{
struct ath6kl_sta *sta;
u8 tsc[6];
/*
* For AP case, keyid will have aid of STA which sent pkt with
* MIC error. Use this aid to get MAC & send it to hostapd.
*/
if (ar->nw_type == AP_NETWORK) {
sta = ath6kl_find_sta_by_aid(ar, (keyid >> 2));
if (!sta)
return;
ath6kl_dbg(ATH6KL_DBG_TRC,
"ap tkip mic error received from aid=%d\n", keyid);
memset(tsc, 0, sizeof(tsc)); /* FIX: get correct TSC */
cfg80211_michael_mic_failure(ar->net_dev, sta->mac,
NL80211_KEYTYPE_PAIRWISE, keyid,
tsc, GFP_KERNEL);
} else
ath6kl_cfg80211_tkip_micerr_event(ar, keyid, ismcast);
}
static void ath6kl_update_target_stats(struct ath6kl *ar, u8 *ptr, u32 len)
{
struct wmi_target_stats *tgt_stats =
(struct wmi_target_stats *) ptr;
struct target_stats *stats = &ar->target_stats;
struct tkip_ccmp_stats *ccmp_stats;
u8 ac;
if (len < sizeof(*tgt_stats))
return;
ath6kl_dbg(ATH6KL_DBG_TRC, "updating target stats\n");
stats->tx_pkt += le32_to_cpu(tgt_stats->stats.tx.pkt);
stats->tx_byte += le32_to_cpu(tgt_stats->stats.tx.byte);
stats->tx_ucast_pkt += le32_to_cpu(tgt_stats->stats.tx.ucast_pkt);
stats->tx_ucast_byte += le32_to_cpu(tgt_stats->stats.tx.ucast_byte);
stats->tx_mcast_pkt += le32_to_cpu(tgt_stats->stats.tx.mcast_pkt);
stats->tx_mcast_byte += le32_to_cpu(tgt_stats->stats.tx.mcast_byte);
stats->tx_bcast_pkt += le32_to_cpu(tgt_stats->stats.tx.bcast_pkt);
stats->tx_bcast_byte += le32_to_cpu(tgt_stats->stats.tx.bcast_byte);
stats->tx_rts_success_cnt +=
le32_to_cpu(tgt_stats->stats.tx.rts_success_cnt);
for (ac = 0; ac < WMM_NUM_AC; ac++)
stats->tx_pkt_per_ac[ac] +=
le32_to_cpu(tgt_stats->stats.tx.pkt_per_ac[ac]);
stats->tx_err += le32_to_cpu(tgt_stats->stats.tx.err);
stats->tx_fail_cnt += le32_to_cpu(tgt_stats->stats.tx.fail_cnt);
stats->tx_retry_cnt += le32_to_cpu(tgt_stats->stats.tx.retry_cnt);
stats->tx_mult_retry_cnt +=
le32_to_cpu(tgt_stats->stats.tx.mult_retry_cnt);
stats->tx_rts_fail_cnt +=
le32_to_cpu(tgt_stats->stats.tx.rts_fail_cnt);
stats->tx_ucast_rate =
ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.tx.ucast_rate));
stats->rx_pkt += le32_to_cpu(tgt_stats->stats.rx.pkt);
stats->rx_byte += le32_to_cpu(tgt_stats->stats.rx.byte);
stats->rx_ucast_pkt += le32_to_cpu(tgt_stats->stats.rx.ucast_pkt);
stats->rx_ucast_byte += le32_to_cpu(tgt_stats->stats.rx.ucast_byte);
stats->rx_mcast_pkt += le32_to_cpu(tgt_stats->stats.rx.mcast_pkt);
stats->rx_mcast_byte += le32_to_cpu(tgt_stats->stats.rx.mcast_byte);
stats->rx_bcast_pkt += le32_to_cpu(tgt_stats->stats.rx.bcast_pkt);
stats->rx_bcast_byte += le32_to_cpu(tgt_stats->stats.rx.bcast_byte);
stats->rx_frgment_pkt += le32_to_cpu(tgt_stats->stats.rx.frgment_pkt);
stats->rx_err += le32_to_cpu(tgt_stats->stats.rx.err);
stats->rx_crc_err += le32_to_cpu(tgt_stats->stats.rx.crc_err);
stats->rx_key_cache_miss +=
le32_to_cpu(tgt_stats->stats.rx.key_cache_miss);
stats->rx_decrypt_err += le32_to_cpu(tgt_stats->stats.rx.decrypt_err);
stats->rx_dupl_frame += le32_to_cpu(tgt_stats->stats.rx.dupl_frame);
stats->rx_ucast_rate =
ath6kl_wmi_get_rate(a_sle32_to_cpu(tgt_stats->stats.rx.ucast_rate));
ccmp_stats = &tgt_stats->stats.tkip_ccmp_stats;
stats->tkip_local_mic_fail +=
le32_to_cpu(ccmp_stats->tkip_local_mic_fail);
stats->tkip_cnter_measures_invoked +=
le32_to_cpu(ccmp_stats->tkip_cnter_measures_invoked);
stats->tkip_fmt_err += le32_to_cpu(ccmp_stats->tkip_fmt_err);
stats->ccmp_fmt_err += le32_to_cpu(ccmp_stats->ccmp_fmt_err);
stats->ccmp_replays += le32_to_cpu(ccmp_stats->ccmp_replays);
stats->pwr_save_fail_cnt +=
le32_to_cpu(tgt_stats->pm_stats.pwr_save_failure_cnt);
stats->noise_floor_calib =
a_sle32_to_cpu(tgt_stats->noise_floor_calib);
stats->cs_bmiss_cnt +=
le32_to_cpu(tgt_stats->cserv_stats.cs_bmiss_cnt);
stats->cs_low_rssi_cnt +=
le32_to_cpu(tgt_stats->cserv_stats.cs_low_rssi_cnt);
stats->cs_connect_cnt +=
le16_to_cpu(tgt_stats->cserv_stats.cs_connect_cnt);
stats->cs_discon_cnt +=
le16_to_cpu(tgt_stats->cserv_stats.cs_discon_cnt);
stats->cs_ave_beacon_rssi =
a_sle16_to_cpu(tgt_stats->cserv_stats.cs_ave_beacon_rssi);
stats->cs_last_roam_msec =
tgt_stats->cserv_stats.cs_last_roam_msec;
stats->cs_snr = tgt_stats->cserv_stats.cs_snr;
stats->cs_rssi = a_sle16_to_cpu(tgt_stats->cserv_stats.cs_rssi);
stats->lq_val = le32_to_cpu(tgt_stats->lq_val);
stats->wow_pkt_dropped +=
le32_to_cpu(tgt_stats->wow_stats.wow_pkt_dropped);
stats->wow_host_pkt_wakeups +=
tgt_stats->wow_stats.wow_host_pkt_wakeups;
stats->wow_host_evt_wakeups +=
tgt_stats->wow_stats.wow_host_evt_wakeups;
stats->wow_evt_discarded +=
le16_to_cpu(tgt_stats->wow_stats.wow_evt_discarded);
if (test_bit(STATS_UPDATE_PEND, &ar->flag)) {
clear_bit(STATS_UPDATE_PEND, &ar->flag);
wake_up(&ar->event_wq);
}
}
static void ath6kl_add_le32(__le32 *var, __le32 val)
{
*var = cpu_to_le32(le32_to_cpu(*var) + le32_to_cpu(val));
}
void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len)
{
struct wmi_ap_mode_stat *p = (struct wmi_ap_mode_stat *) ptr;
struct wmi_ap_mode_stat *ap = &ar->ap_stats;
struct wmi_per_sta_stat *st_ap, *st_p;
u8 ac;
if (ar->nw_type == AP_NETWORK) {
if (len < sizeof(*p))
return;
for (ac = 0; ac < AP_MAX_NUM_STA; ac++) {
st_ap = &ap->sta[ac];
st_p = &p->sta[ac];
ath6kl_add_le32(&st_ap->tx_bytes, st_p->tx_bytes);
ath6kl_add_le32(&st_ap->tx_pkts, st_p->tx_pkts);
ath6kl_add_le32(&st_ap->tx_error, st_p->tx_error);
ath6kl_add_le32(&st_ap->tx_discard, st_p->tx_discard);
ath6kl_add_le32(&st_ap->rx_bytes, st_p->rx_bytes);
ath6kl_add_le32(&st_ap->rx_pkts, st_p->rx_pkts);
ath6kl_add_le32(&st_ap->rx_error, st_p->rx_error);
ath6kl_add_le32(&st_ap->rx_discard, st_p->rx_discard);
}
} else {
ath6kl_update_target_stats(ar, ptr, len);
}
}
void ath6kl_wakeup_event(void *dev)
{
struct ath6kl *ar = (struct ath6kl *) dev;
wake_up(&ar->event_wq);
}
void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr)
{
struct ath6kl *ar = (struct ath6kl *) devt;
ar->tx_pwr = tx_pwr;
wake_up(&ar->event_wq);
}
void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid)
{
struct ath6kl_sta *conn;
struct sk_buff *skb;
bool psq_empty = false;
conn = ath6kl_find_sta_by_aid(ar, aid);
if (!conn)
return;
/*
* Send out a packet queued on ps queue. When the ps queue
* becomes empty update the PVB for this station.
*/
spin_lock_bh(&conn->psq_lock);
psq_empty = skb_queue_empty(&conn->psq);
spin_unlock_bh(&conn->psq_lock);
if (psq_empty)
/* TODO: Send out a NULL data frame */
return;
spin_lock_bh(&conn->psq_lock);
skb = skb_dequeue(&conn->psq);
spin_unlock_bh(&conn->psq_lock);
conn->sta_flags |= STA_PS_POLLED;
ath6kl_data_tx(skb, ar->net_dev);
conn->sta_flags &= ~STA_PS_POLLED;
spin_lock_bh(&conn->psq_lock);
psq_empty = skb_queue_empty(&conn->psq);
spin_unlock_bh(&conn->psq_lock);
if (psq_empty)
ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0);
}
void ath6kl_dtimexpiry_event(struct ath6kl *ar)
{
bool mcastq_empty = false;
struct sk_buff *skb;
/*
* If there are no associated STAs, ignore the DTIM expiry event.
* There can be potential race conditions where the last associated
* STA may disconnect & before the host could clear the 'Indicate
* DTIM' request to the firmware, the firmware would have just
* indicated a DTIM expiry event. The race is between 'clear DTIM
* expiry cmd' going from the host to the firmware & the DTIM
* expiry event happening from the firmware to the host.
*/
if (!ar->sta_list_index)
return;
spin_lock_bh(&ar->mcastpsq_lock);
mcastq_empty = skb_queue_empty(&ar->mcastpsq);
spin_unlock_bh(&ar->mcastpsq_lock);
if (mcastq_empty)
return;
/* set the STA flag to dtim_expired for the frame to go out */
set_bit(DTIM_EXPIRED, &ar->flag);
spin_lock_bh(&ar->mcastpsq_lock);
while ((skb = skb_dequeue(&ar->mcastpsq)) != NULL) {
spin_unlock_bh(&ar->mcastpsq_lock);
ath6kl_data_tx(skb, ar->net_dev);
spin_lock_bh(&ar->mcastpsq_lock);
}
spin_unlock_bh(&ar->mcastpsq_lock);
clear_bit(DTIM_EXPIRED, &ar->flag);
/* clear the LSB of the BitMapCtl field of the TIM IE */
ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0);
}
void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason, u8 *bssid,
u8 assoc_resp_len, u8 *assoc_info,
u16 prot_reason_status)
{
unsigned long flags;
if (ar->nw_type == AP_NETWORK) {
if (!ath6kl_remove_sta(ar, bssid, prot_reason_status))
return;
/* if no more associated STAs, empty the mcast PS q */
if (ar->sta_list_index == 0) {
spin_lock_bh(&ar->mcastpsq_lock);
skb_queue_purge(&ar->mcastpsq);
spin_unlock_bh(&ar->mcastpsq_lock);
/* clear the LSB of the TIM IE's BitMapCtl field */
if (test_bit(WMI_READY, &ar->flag))
ath6kl_wmi_set_pvb_cmd(ar->wmi, MCAST_AID, 0);
}
if (!is_broadcast_ether_addr(bssid)) {
/* send event to application */
cfg80211_del_sta(ar->net_dev, bssid, GFP_KERNEL);
}
if (memcmp(ar->net_dev->dev_addr, bssid, ETH_ALEN) == 0) {
memset(ar->wep_key_list, 0, sizeof(ar->wep_key_list));
clear_bit(CONNECTED, &ar->flag);
}
return;
}
ath6kl_cfg80211_disconnect_event(ar, reason, bssid,
assoc_resp_len, assoc_info,
prot_reason_status);
aggr_reset_state(ar->aggr_cntxt);
del_timer(&ar->disconnect_timer);
ath6kl_dbg(ATH6KL_DBG_WLAN_CONNECT,
"disconnect reason is %d\n", reason);
/*
* If the event is due to disconnect cmd from the host, only they
* the target would stop trying to connect. Under any other
* condition, target would keep trying to connect.
*/
if (reason == DISCONNECT_CMD) {
if (!ar->usr_bss_filter && test_bit(WMI_READY, &ar->flag))
ath6kl_wmi_bssfilter_cmd(ar->wmi, NONE_BSS_FILTER, 0);
} else {
set_bit(CONNECT_PEND, &ar->flag);
if (((reason == ASSOC_FAILED) &&
(prot_reason_status == 0x11)) ||
((reason == ASSOC_FAILED) && (prot_reason_status == 0x0)
&& (ar->reconnect_flag == 1))) {
set_bit(CONNECTED, &ar->flag);
return;
}
}
/* update connect & link status atomically */
spin_lock_irqsave(&ar->lock, flags);
clear_bit(CONNECTED, &ar->flag);
netif_carrier_off(ar->net_dev);
spin_unlock_irqrestore(&ar->lock, flags);
if ((reason != CSERV_DISCONNECT) || (ar->reconnect_flag != 1))
ar->reconnect_flag = 0;
if (reason != CSERV_DISCONNECT)
ar->user_key_ctrl = 0;
netif_stop_queue(ar->net_dev);
memset(ar->bssid, 0, sizeof(ar->bssid));
ar->bss_ch = 0;
ath6kl_tx_data_cleanup(ar);
}
static int ath6kl_open(struct net_device *dev)
{
struct ath6kl *ar = ath6kl_priv(dev);
unsigned long flags;
spin_lock_irqsave(&ar->lock, flags);
set_bit(WLAN_ENABLED, &ar->flag);
if (test_bit(CONNECTED, &ar->flag)) {
netif_carrier_on(dev);
netif_wake_queue(dev);
} else
netif_carrier_off(dev);
spin_unlock_irqrestore(&ar->lock, flags);
return 0;
}
static int ath6kl_close(struct net_device *dev)
{
struct ath6kl *ar = ath6kl_priv(dev);
netif_stop_queue(dev);
ath6kl_disconnect(ar);
if (test_bit(WMI_READY, &ar->flag)) {
if (ath6kl_wmi_scanparams_cmd(ar->wmi, 0xFFFF, 0, 0, 0, 0, 0, 0,
0, 0, 0))
return -EIO;
clear_bit(WLAN_ENABLED, &ar->flag);
}
ath6kl_cfg80211_scan_complete_event(ar, -ECANCELED);
return 0;
}
static struct net_device_stats *ath6kl_get_stats(struct net_device *dev)
{
struct ath6kl *ar = ath6kl_priv(dev);
return &ar->net_stats;
}
static struct net_device_ops ath6kl_netdev_ops = {
.ndo_open = ath6kl_open,
.ndo_stop = ath6kl_close,
.ndo_start_xmit = ath6kl_data_tx,
.ndo_get_stats = ath6kl_get_stats,
};
void init_netdev(struct net_device *dev)
{
dev->netdev_ops = &ath6kl_netdev_ops;
dev->watchdog_timeo = ATH6KL_TX_TIMEOUT;
dev->needed_headroom = ETH_HLEN;
dev->needed_headroom += sizeof(struct ath6kl_llc_snap_hdr) +
sizeof(struct wmi_data_hdr) + HTC_HDR_LENGTH
+ WMI_MAX_TX_META_SZ + ATH6KL_HTC_ALIGN_BYTES;
return;
}
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