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mac80211: reorder MLME code more

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This way all the utility functions are at the top, then the
state machine and externally callable functions are moved to
the bottom. Also clean up ieee80211_i.h a bit and add a few
comments about which functions are called from where.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2008-09-11 00:01:52 +02:00 committed by John W. Linville
parent 5bc75728fd
commit 9c6bd79011
3 changed files with 348 additions and 336 deletions
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43
net/mac80211/ieee80211_i.h
View file

@ -882,30 +882,43 @@ static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
}
/* ieee80211.c */
int ieee80211_hw_config(struct ieee80211_local *local);
int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
u32 ieee80211_handle_ht(struct ieee80211_local *local, int enable_ht,
struct ieee80211_ht_info *req_ht_cap,
struct ieee80211_ht_bss_info *req_bss_cap);
void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
u32 changed);
/* ieee80211_ioctl.c */
/* wireless extensions */
extern const struct iw_handler_def ieee80211_iw_handler_def;
int ieee80211_set_freq(struct ieee80211_sub_if_data *sdata, int freq);
/* ieee80211_sta.c */
void ieee80211_sta_timer(unsigned long data);
void ieee80211_sta_work(struct work_struct *work);
/* STA/IBSS code */
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_scan_work(struct work_struct *work);
void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
struct ieee80211_rx_status *rx_status);
int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
int ieee80211_sta_req_scan(struct ieee80211_sub_if_data *sdata, u8 *ssid, size_t ssid_len);
void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta);
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, u8 *bssid,
u8 *addr, u64 supp_rates);
int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
struct ieee802_11_elems *elems,
enum ieee80211_band band);
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u8 *ssid, size_t ssid_len);
/* scan/BSS handling */
int ieee80211_sta_req_scan(struct ieee80211_sub_if_data *sdata, u8 *ssid, size_t ssid_len);
int ieee80211_sta_scan_results(struct ieee80211_local *local,
struct iw_request_info *info,
char *buf, size_t len);
@ -915,21 +928,7 @@ ieee80211_rx_result ieee80211_sta_rx_scan(
void ieee80211_rx_bss_list_init(struct ieee80211_local *local);
void ieee80211_rx_bss_list_deinit(struct ieee80211_local *local);
int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len);
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, u8 *bssid,
u8 *addr, u64 supp_rates);
int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason);
int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason);
void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
u32 changed);
u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
struct ieee802_11_elems *elems,
enum ieee80211_band band);
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u8 *ssid, size_t ssid_len);
void ieee802_11_parse_elems(u8 *start, size_t len,
struct ieee802_11_elems *elems);
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local);
int ieee80211_sta_start_scan(struct ieee80211_sub_if_data *scan_sdata,
u8 *ssid, size_t ssid_len);
@ -1007,6 +1006,8 @@ void mac80211_ev_michael_mic_failure(struct ieee80211_sub_if_data *sdata, int ke
void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata);
void ieee80211_tx_skb(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
int encrypt);
void ieee802_11_parse_elems(u8 *start, size_t len,
struct ieee802_11_elems *elems);
#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline

17
net/mac80211/iface.c
View file

@ -83,8 +83,6 @@ static void ieee80211_teardown_sdata(struct net_device *dev)
static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
enum ieee80211_if_types type)
{
struct ieee80211_if_sta *ifsta;
/* clear type-dependent union */
memset(&sdata->u, 0, sizeof(sdata->u));
@ -101,20 +99,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
break;
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
ifsta = &sdata->u.sta;
INIT_WORK(&ifsta->work, ieee80211_sta_work);
setup_timer(&ifsta->timer, ieee80211_sta_timer,
(unsigned long) sdata);
skb_queue_head_init(&ifsta->skb_queue);
ifsta->capab = WLAN_CAPABILITY_ESS;
ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
IEEE80211_AUTH_ALG_SHARED_KEY;
ifsta->flags |= IEEE80211_STA_CREATE_IBSS |
IEEE80211_STA_AUTO_BSSID_SEL |
IEEE80211_STA_AUTO_CHANNEL_SEL;
if (ieee80211_num_regular_queues(&sdata->local->hw) >= 4)
ifsta->flags |= IEEE80211_STA_WMM_ENABLED;
ieee80211_sta_setup_sdata(sdata);
break;
case IEEE80211_IF_TYPE_MESH_POINT:
if (ieee80211_vif_is_mesh(&sdata->vif))

624
net/mac80211/mlme.c
View file

@ -93,44 +93,46 @@ static int ieee80211_compatible_rates(struct ieee80211_sta_bss *bss,
return count;
}
/* frame sending functions */
static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta,
int transaction, u8 *extra, size_t extra_len,
int encrypt)
/* also used by mesh code */
u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
struct ieee802_11_elems *elems,
enum ieee80211_band band)
{
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
struct ieee80211_supported_band *sband;
struct ieee80211_rate *bitrates;
size_t num_rates;
u64 supp_rates;
int i, j;
sband = local->hw.wiphy->bands[band];
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
sizeof(*mgmt) + 6 + extra_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
"frame\n", sdata->dev->name);
return;
if (!sband) {
WARN_ON(1);
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
}
skb_reserve(skb, local->hw.extra_tx_headroom);
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
memset(mgmt, 0, 24 + 6);
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_AUTH);
if (encrypt)
mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
ifsta->auth_transaction = transaction + 1;
mgmt->u.auth.status_code = cpu_to_le16(0);
if (extra)
memcpy(skb_put(skb, extra_len), extra, extra_len);
ieee80211_tx_skb(sdata, skb, encrypt);
bitrates = sband->bitrates;
num_rates = sband->n_bitrates;
supp_rates = 0;
for (i = 0; i < elems->supp_rates_len +
elems->ext_supp_rates_len; i++) {
u8 rate = 0;
int own_rate;
if (i < elems->supp_rates_len)
rate = elems->supp_rates[i];
else if (elems->ext_supp_rates)
rate = elems->ext_supp_rates
[i - elems->supp_rates_len];
own_rate = 5 * (rate & 0x7f);
for (j = 0; j < num_rates; j++)
if (bitrates[j].bitrate == own_rate)
supp_rates |= BIT(j);
}
return supp_rates;
}
/* frame sending functions */
/* also used by scanning code */
void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u8 *ssid, size_t ssid_len)
{
@ -191,6 +193,43 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
ieee80211_tx_skb(sdata, skb, 0);
}
static void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta,
int transaction, u8 *extra, size_t extra_len,
int encrypt)
{
struct ieee80211_local *local = sdata->local;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
sizeof(*mgmt) + 6 + extra_len);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for auth "
"frame\n", sdata->dev->name);
return;
}
skb_reserve(skb, local->hw.extra_tx_headroom);
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24 + 6);
memset(mgmt, 0, 24 + 6);
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_AUTH);
if (encrypt)
mgmt->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
memcpy(mgmt->da, ifsta->bssid, ETH_ALEN);
memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
memcpy(mgmt->bssid, ifsta->bssid, ETH_ALEN);
mgmt->u.auth.auth_alg = cpu_to_le16(ifsta->auth_alg);
mgmt->u.auth.auth_transaction = cpu_to_le16(transaction);
ifsta->auth_transaction = transaction + 1;
mgmt->u.auth.status_code = cpu_to_le16(0);
if (extra)
memcpy(skb_put(skb, extra_len), extra, extra_len);
ieee80211_tx_skb(sdata, skb, encrypt);
}
static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta)
{
@ -1414,42 +1453,6 @@ static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
return res;
}
u64 ieee80211_sta_get_rates(struct ieee80211_local *local,
struct ieee802_11_elems *elems,
enum ieee80211_band band)
{
struct ieee80211_supported_band *sband;
struct ieee80211_rate *bitrates;
size_t num_rates;
u64 supp_rates;
int i, j;
sband = local->hw.wiphy->bands[band];
if (!sband) {
WARN_ON(1);
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
}
bitrates = sband->bitrates;
num_rates = sband->n_bitrates;
supp_rates = 0;
for (i = 0; i < elems->supp_rates_len +
elems->ext_supp_rates_len; i++) {
u8 rate = 0;
int own_rate;
if (i < elems->supp_rates_len)
rate = elems->supp_rates[i];
else if (elems->ext_supp_rates)
rate = elems->ext_supp_rates
[i - elems->supp_rates_len];
own_rate = 5 * (rate & 0x7f);
for (j = 0; j < num_rates; j++)
if (bitrates[j].bitrate == own_rate)
supp_rates |= BIT(j);
}
return supp_rates;
}
static u64 ieee80211_sta_get_mandatory_rates(struct ieee80211_local *local,
enum ieee80211_band band)
{
@ -1894,7 +1897,7 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata,
}
void ieee80211_sta_timer(unsigned long data)
static void ieee80211_sta_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata =
(struct ieee80211_sub_if_data *) data;
@ -1937,28 +1940,6 @@ static void ieee80211_sta_reset_auth(struct ieee80211_sub_if_data *sdata,
}
void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta)
{
struct ieee80211_local *local = sdata->local;
if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
return;
if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
IEEE80211_STA_AUTO_BSSID_SEL)) &&
(ifsta->flags & (IEEE80211_STA_SSID_SET |
IEEE80211_STA_AUTO_SSID_SEL))) {
if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED)
ieee80211_set_disassoc(sdata, ifsta, true, true,
WLAN_REASON_DEAUTH_LEAVING);
set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
queue_work(local->hw.workqueue, &ifsta->work);
}
}
static int ieee80211_sta_match_ssid(struct ieee80211_if_sta *ifsta,
const char *ssid, int ssid_len)
{
@ -2160,159 +2141,6 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata,
}
int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len)
{
struct ieee80211_if_sta *ifsta;
int res;
if (len > IEEE80211_MAX_SSID_LEN)
return -EINVAL;
ifsta = &sdata->u.sta;
if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) {
memset(ifsta->ssid, 0, sizeof(ifsta->ssid));
memcpy(ifsta->ssid, ssid, len);
ifsta->ssid_len = len;
ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
res = 0;
/*
* Hack! MLME code needs to be cleaned up to have different
* entry points for configuration and internal selection change
*/
if (netif_running(sdata->dev))
res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID);
if (res) {
printk(KERN_DEBUG "%s: Failed to config new SSID to "
"the low-level driver\n", sdata->dev->name);
return res;
}
}
if (len)
ifsta->flags |= IEEE80211_STA_SSID_SET;
else
ifsta->flags &= ~IEEE80211_STA_SSID_SET;
if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
!(ifsta->flags & IEEE80211_STA_BSSID_SET)) {
ifsta->ibss_join_req = jiffies;
ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH;
return ieee80211_sta_find_ibss(sdata, ifsta);
}
return 0;
}
int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
*len = ifsta->ssid_len;
return 0;
}
int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
{
struct ieee80211_if_sta *ifsta;
int res;
ifsta = &sdata->u.sta;
if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
memcpy(ifsta->bssid, bssid, ETH_ALEN);
res = 0;
/*
* Hack! See also ieee80211_sta_set_ssid.
*/
if (netif_running(sdata->dev))
res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
if (res) {
printk(KERN_DEBUG "%s: Failed to config new BSSID to "
"the low-level driver\n", sdata->dev->name);
return res;
}
}
if (is_valid_ether_addr(bssid))
ifsta->flags |= IEEE80211_STA_BSSID_SET;
else
ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
return 0;
}
int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
kfree(ifsta->extra_ie);
if (len == 0) {
ifsta->extra_ie = NULL;
ifsta->extra_ie_len = 0;
return 0;
}
ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
if (!ifsta->extra_ie) {
ifsta->extra_ie_len = 0;
return -ENOMEM;
}
memcpy(ifsta->extra_ie, ie, len);
ifsta->extra_ie_len = len;
return 0;
}
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, u8 *bssid,
u8 *addr, u64 supp_rates)
{
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
DECLARE_MAC_BUF(mac);
int band = local->hw.conf.channel->band;
/* TODO: Could consider removing the least recently used entry and
* allow new one to be added. */
if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
if (net_ratelimit()) {
printk(KERN_DEBUG "%s: No room for a new IBSS STA "
"entry %s\n", sdata->dev->name, print_mac(mac, addr));
}
return NULL;
}
if (compare_ether_addr(bssid, sdata->u.sta.bssid))
return NULL;
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
wiphy_name(local->hw.wiphy), print_mac(mac, addr), sdata->dev->name);
#endif
sta = sta_info_alloc(sdata, addr, GFP_ATOMIC);
if (!sta)
return NULL;
set_sta_flags(sta, WLAN_STA_AUTHORIZED);
/* make sure mandatory rates are always added */
sta->supp_rates[band] = supp_rates |
ieee80211_sta_get_mandatory_rates(local, band);
rate_control_rate_init(sta, local);
if (sta_info_insert(sta))
return NULL;
return sta;
}
static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta)
{
@ -2392,61 +2220,7 @@ static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
}
int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n",
sdata->dev->name, reason);
if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
return -EINVAL;
ieee80211_set_disassoc(sdata, ifsta, true, true, reason);
return 0;
}
int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n",
sdata->dev->name, reason);
if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
return -EINVAL;
if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED))
return -1;
ieee80211_set_disassoc(sdata, ifsta, false, true, reason);
return 0;
}
void ieee80211_notify_mac(struct ieee80211_hw *hw,
enum ieee80211_notification_types notif_type)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
switch (notif_type) {
case IEEE80211_NOTIFY_RE_ASSOC:
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
continue;
ieee80211_sta_req_auth(sdata, &sdata->u.sta);
}
rcu_read_unlock();
break;
}
}
EXPORT_SYMBOL(ieee80211_notify_mac);
void ieee80211_sta_work(struct work_struct *work)
static void ieee80211_sta_work(struct work_struct *work)
{
struct ieee80211_sub_if_data *sdata =
container_of(work, struct ieee80211_sub_if_data, u.sta.work);
@ -2525,6 +2299,236 @@ static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
&sdata->u.sta.work);
}
/* interface setup */
void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_sta *ifsta;
ifsta = &sdata->u.sta;
INIT_WORK(&ifsta->work, ieee80211_sta_work);
setup_timer(&ifsta->timer, ieee80211_sta_timer,
(unsigned long) sdata);
skb_queue_head_init(&ifsta->skb_queue);
ifsta->capab = WLAN_CAPABILITY_ESS;
ifsta->auth_algs = IEEE80211_AUTH_ALG_OPEN |
IEEE80211_AUTH_ALG_SHARED_KEY;
ifsta->flags |= IEEE80211_STA_CREATE_IBSS |
IEEE80211_STA_AUTO_BSSID_SEL |
IEEE80211_STA_AUTO_CHANNEL_SEL;
if (ieee80211_num_regular_queues(&sdata->local->hw) >= 4)
ifsta->flags |= IEEE80211_STA_WMM_ENABLED;
}
/*
* Add a new IBSS station, will also be called by the RX code when,
* in IBSS mode, receiving a frame from a yet-unknown station, hence
* must be callable in atomic context.
*/
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, u8 *bssid,
u8 *addr, u64 supp_rates)
{
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
DECLARE_MAC_BUF(mac);
int band = local->hw.conf.channel->band;
/* TODO: Could consider removing the least recently used entry and
* allow new one to be added. */
if (local->num_sta >= IEEE80211_IBSS_MAX_STA_ENTRIES) {
if (net_ratelimit()) {
printk(KERN_DEBUG "%s: No room for a new IBSS STA "
"entry %s\n", sdata->dev->name, print_mac(mac, addr));
}
return NULL;
}
if (compare_ether_addr(bssid, sdata->u.sta.bssid))
return NULL;
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
printk(KERN_DEBUG "%s: Adding new IBSS station %s (dev=%s)\n",
wiphy_name(local->hw.wiphy), print_mac(mac, addr), sdata->dev->name);
#endif
sta = sta_info_alloc(sdata, addr, GFP_ATOMIC);
if (!sta)
return NULL;
set_sta_flags(sta, WLAN_STA_AUTHORIZED);
/* make sure mandatory rates are always added */
sta->supp_rates[band] = supp_rates |
ieee80211_sta_get_mandatory_rates(local, band);
rate_control_rate_init(sta, local);
if (sta_info_insert(sta))
return NULL;
return sta;
}
/* configuration hooks */
void ieee80211_sta_req_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta)
{
struct ieee80211_local *local = sdata->local;
if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
return;
if ((ifsta->flags & (IEEE80211_STA_BSSID_SET |
IEEE80211_STA_AUTO_BSSID_SEL)) &&
(ifsta->flags & (IEEE80211_STA_SSID_SET |
IEEE80211_STA_AUTO_SSID_SEL))) {
if (ifsta->state == IEEE80211_STA_MLME_ASSOCIATED)
ieee80211_set_disassoc(sdata, ifsta, true, true,
WLAN_REASON_DEAUTH_LEAVING);
set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
queue_work(local->hw.workqueue, &ifsta->work);
}
}
int ieee80211_sta_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len)
{
struct ieee80211_if_sta *ifsta;
int res;
if (len > IEEE80211_MAX_SSID_LEN)
return -EINVAL;
ifsta = &sdata->u.sta;
if (ifsta->ssid_len != len || memcmp(ifsta->ssid, ssid, len) != 0) {
memset(ifsta->ssid, 0, sizeof(ifsta->ssid));
memcpy(ifsta->ssid, ssid, len);
ifsta->ssid_len = len;
ifsta->flags &= ~IEEE80211_STA_PREV_BSSID_SET;
res = 0;
/*
* Hack! MLME code needs to be cleaned up to have different
* entry points for configuration and internal selection change
*/
if (netif_running(sdata->dev))
res = ieee80211_if_config(sdata, IEEE80211_IFCC_SSID);
if (res) {
printk(KERN_DEBUG "%s: Failed to config new SSID to "
"the low-level driver\n", sdata->dev->name);
return res;
}
}
if (len)
ifsta->flags |= IEEE80211_STA_SSID_SET;
else
ifsta->flags &= ~IEEE80211_STA_SSID_SET;
if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS &&
!(ifsta->flags & IEEE80211_STA_BSSID_SET)) {
ifsta->ibss_join_req = jiffies;
ifsta->state = IEEE80211_STA_MLME_IBSS_SEARCH;
return ieee80211_sta_find_ibss(sdata, ifsta);
}
return 0;
}
int ieee80211_sta_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
memcpy(ssid, ifsta->ssid, ifsta->ssid_len);
*len = ifsta->ssid_len;
return 0;
}
int ieee80211_sta_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
{
struct ieee80211_if_sta *ifsta;
int res;
ifsta = &sdata->u.sta;
if (memcmp(ifsta->bssid, bssid, ETH_ALEN) != 0) {
memcpy(ifsta->bssid, bssid, ETH_ALEN);
res = 0;
/*
* Hack! See also ieee80211_sta_set_ssid.
*/
if (netif_running(sdata->dev))
res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
if (res) {
printk(KERN_DEBUG "%s: Failed to config new BSSID to "
"the low-level driver\n", sdata->dev->name);
return res;
}
}
if (is_valid_ether_addr(bssid))
ifsta->flags |= IEEE80211_STA_BSSID_SET;
else
ifsta->flags &= ~IEEE80211_STA_BSSID_SET;
return 0;
}
int ieee80211_sta_set_extra_ie(struct ieee80211_sub_if_data *sdata, char *ie, size_t len)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
kfree(ifsta->extra_ie);
if (len == 0) {
ifsta->extra_ie = NULL;
ifsta->extra_ie_len = 0;
return 0;
}
ifsta->extra_ie = kmalloc(len, GFP_KERNEL);
if (!ifsta->extra_ie) {
ifsta->extra_ie_len = 0;
return -ENOMEM;
}
memcpy(ifsta->extra_ie, ie, len);
ifsta->extra_ie_len = len;
return 0;
}
int ieee80211_sta_deauthenticate(struct ieee80211_sub_if_data *sdata, u16 reason)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
printk(KERN_DEBUG "%s: deauthenticating by local choice (reason=%d)\n",
sdata->dev->name, reason);
if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
return -EINVAL;
ieee80211_set_disassoc(sdata, ifsta, true, true, reason);
return 0;
}
int ieee80211_sta_disassociate(struct ieee80211_sub_if_data *sdata, u16 reason)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
printk(KERN_DEBUG "%s: disassociating by local choice (reason=%d)\n",
sdata->dev->name, reason);
if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
return -EINVAL;
if (!(ifsta->flags & IEEE80211_STA_ASSOCIATED))
return -1;
ieee80211_set_disassoc(sdata, ifsta, false, true, reason);
return 0;
}
/* scan finished notification */
void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
{
struct ieee80211_sub_if_data *sdata = local->scan_sdata;
@ -2544,3 +2548,25 @@ void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
ieee80211_restart_sta_timer(sdata);
rcu_read_unlock();
}
/* driver notification call */
void ieee80211_notify_mac(struct ieee80211_hw *hw,
enum ieee80211_notification_types notif_type)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
switch (notif_type) {
case IEEE80211_NOTIFY_RE_ASSOC:
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
if (sdata->vif.type != IEEE80211_IF_TYPE_STA)
continue;
ieee80211_sta_req_auth(sdata, &sdata->u.sta);
}
rcu_read_unlock();
break;
}
}
EXPORT_SYMBOL(ieee80211_notify_mac);