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mac80211: convert to cfg80211 IBSS API

Browse source 
This converts mac80211 to the new cfg80211 IBSS API, the
wext handling functions are called where appropriate.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-04-19 21:25:43 +02:00 committed by John W. Linville
parent 04a773ade0
commit af8cdcd828
10 changed files with 228 additions and 330 deletions
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17
net/mac80211/cfg.c
View file

@ -1283,6 +1283,21 @@ static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
return ieee80211_sta_disassociate(sdata, req->reason_code);
}
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_ibss_params *params)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
return ieee80211_ibss_join(sdata, params);
}
static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
return ieee80211_ibss_leave(sdata);
}
struct cfg80211_ops mac80211_config_ops = {
.add_virtual_intf = ieee80211_add_iface,
.del_virtual_intf = ieee80211_del_iface,
@ -1319,4 +1334,6 @@ struct cfg80211_ops mac80211_config_ops = {
.assoc = ieee80211_assoc,
.deauth = ieee80211_deauth,
.disassoc = ieee80211_disassoc,
.join_ibss = ieee80211_join_ibss,
.leave_ibss = ieee80211_leave_ibss,
};

347
net/mac80211/ibss.c
View file

@ -59,74 +59,59 @@ static void ieee80211_rx_mgmt_auth_ibss(struct ieee80211_sub_if_data *sdata,
sdata->u.ibss.bssid, 0);
}
static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
const u8 *bssid, const int beacon_int,
const int freq,
const size_t supp_rates_len,
const u8 *supp_rates,
const u16 capability, u64 tsf)
static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
const u8 *bssid, const int beacon_int,
struct ieee80211_channel *chan,
const size_t supp_rates_len,
const u8 *supp_rates,
const u16 capability, u64 tsf)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_local *local = sdata->local;
int res = 0, rates, i, j;
int rates, i, j;
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
u8 *pos;
struct ieee80211_supported_band *sband;
union iwreq_data wrqu;
if (local->ops->reset_tsf) {
/* Reset own TSF to allow time synchronization work. */
local->ops->reset_tsf(local_to_hw(local));
}
if ((ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET) &&
memcmp(ifibss->bssid, bssid, ETH_ALEN) == 0)
return res;
skb = ifibss->skb;
rcu_assign_pointer(ifibss->presp, NULL);
synchronize_rcu();
skb->data = skb->head;
skb->len = 0;
skb_reset_tail_pointer(skb);
skb_reserve(skb, sdata->local->hw.extra_tx_headroom);
skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400);
if (!skb) {
printk(KERN_DEBUG "%s: failed to allocate buffer for probe "
"response\n", sdata->dev->name);
return -ENOMEM;
}
if (!(ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET)) {
/* Remove possible STA entries from other IBSS networks. */
sta_info_flush_delayed(sdata);
}
if (memcmp(ifibss->bssid, bssid, ETH_ALEN))
sta_info_flush(sdata->local, sdata);
memcpy(ifibss->bssid, bssid, ETH_ALEN);
res = ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
if (res)
return res;
local->hw.conf.beacon_int = beacon_int >= 10 ? beacon_int : 10;
sdata->drop_unencrypted = capability &
WLAN_CAPABILITY_PRIVACY ? 1 : 0;
sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
res = ieee80211_set_freq(sdata, freq);
ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID);
if (res)
return res;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
local->oper_channel = chan;
local->oper_channel_type = NL80211_CHAN_NO_HT;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
sband = local->hw.wiphy->bands[chan->band];
/* Build IBSS probe response */
skb_reserve(skb, local->hw.extra_tx_headroom);
mgmt = (struct ieee80211_mgmt *)
skb_put(skb, 24 + sizeof(mgmt->u.beacon));
mgmt = (void *) skb_put(skb, 24 + sizeof(mgmt->u.beacon));
memset(mgmt, 0, 24 + sizeof(mgmt->u.beacon));
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_PROBE_RESP);
memset(mgmt->da, 0xff, ETH_ALEN);
memcpy(mgmt->sa, sdata->dev->dev_addr, ETH_ALEN);
memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
mgmt->u.beacon.beacon_int =
cpu_to_le16(local->hw.conf.beacon_int);
mgmt->u.beacon.beacon_int = cpu_to_le16(local->hw.conf.beacon_int);
mgmt->u.beacon.timestamp = cpu_to_le64(tsf);
mgmt->u.beacon.capab_info = cpu_to_le16(capability);
@ -147,7 +132,7 @@ static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
pos = skb_put(skb, 2 + 1);
*pos++ = WLAN_EID_DS_PARAMS;
*pos++ = 1;
*pos++ = ieee80211_frequency_to_channel(freq);
*pos++ = ieee80211_frequency_to_channel(chan->center_freq);
}
pos = skb_put(skb, 2 + 2);
@ -165,12 +150,15 @@ static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
memcpy(pos, &supp_rates[8], rates);
}
ifibss->probe_resp = skb;
if (ifibss->ie_len)
memcpy(skb_put(skb, ifibss->ie_len),
ifibss->ie, ifibss->ie_len);
rcu_assign_pointer(ifibss->presp, skb);
ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON |
IEEE80211_IFCC_BEACON_ENABLED);
rates = 0;
for (i = 0; i < supp_rates_len; i++) {
int bitrate = (supp_rates[i] & 0x7f) * 5;
@ -181,27 +169,24 @@ static int __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
ieee80211_sta_def_wmm_params(sdata, supp_rates_len, supp_rates);
ifibss->flags |= IEEE80211_IBSS_PREV_BSSID_SET;
ifibss->state = IEEE80211_IBSS_MLME_JOINED;
mod_timer(&ifibss->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
mod_timer(&ifibss->timer,
round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL));
memset(&wrqu, 0, sizeof(wrqu));
memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
wireless_send_event(sdata->dev, SIOCGIWAP, &wrqu, NULL);
return res;
cfg80211_inform_bss_frame(local->hw.wiphy, local->hw.conf.channel,
mgmt, skb->len, 0, GFP_KERNEL);
cfg80211_ibss_joined(sdata->dev, ifibss->bssid, GFP_KERNEL);
}
static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_bss *bss)
static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_bss *bss)
{
return __ieee80211_sta_join_ibss(sdata,
bss->cbss.bssid,
bss->cbss.beacon_interval,
bss->cbss.channel->center_freq,
bss->supp_rates_len, bss->supp_rates,
bss->cbss.capability,
bss->cbss.tsf);
__ieee80211_sta_join_ibss(sdata, bss->cbss.bssid,
bss->cbss.beacon_interval,
bss->cbss.channel,
bss->supp_rates_len, bss->supp_rates,
bss->cbss.capability,
bss->cbss.tsf);
}
static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
@ -277,7 +262,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
goto put_bss;
/* we use a fixed BSSID */
if (sdata->u.ibss.flags & IEEE80211_IBSS_BSSID_SET)
if (sdata->u.ibss.bssid)
goto put_bss;
/* not an IBSS */
@ -369,13 +354,14 @@ struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta;
int band = local->hw.conf.channel->band;
/* TODO: Could consider removing the least recently used entry and
* allow new one to be added. */
/*
* XXX: 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 %pM\n", sdata->dev->name, addr);
}
if (net_ratelimit())
printk(KERN_DEBUG "%s: No room for a new IBSS STA entry %pM\n",
sdata->dev->name, addr);
return NULL;
}
@ -432,14 +418,15 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
mod_timer(&ifibss->timer, jiffies + IEEE80211_IBSS_MERGE_INTERVAL);
mod_timer(&ifibss->timer,
round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL));
ieee80211_sta_expire(sdata, IEEE80211_IBSS_INACTIVITY_LIMIT);
if (ieee80211_sta_active_ibss(sdata))
return;
if ((ifibss->flags & IEEE80211_IBSS_BSSID_SET) &&
(!(ifibss->flags & IEEE80211_IBSS_AUTO_CHANNEL_SEL)))
if (ifibss->fixed_channel)
return;
printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
@ -455,7 +442,7 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata)
ieee80211_request_scan(sdata, &sdata->local->int_scan_req);
}
static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_local *local = sdata->local;
@ -466,7 +453,7 @@ static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
u16 capability;
int i;
if (ifibss->flags & IEEE80211_IBSS_BSSID_SET) {
if (ifibss->fixed_bssid) {
memcpy(bssid, ifibss->bssid, ETH_ALEN);
} else {
/* Generate random, not broadcast, locally administered BSSID. Mix in
@ -482,7 +469,7 @@ static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
printk(KERN_DEBUG "%s: Creating new IBSS network, BSSID %pM\n",
sdata->dev->name, bssid);
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
sband = local->hw.wiphy->bands[ifibss->channel->band];
if (local->hw.conf.beacon_int == 0)
local->hw.conf.beacon_int = 100;
@ -500,24 +487,20 @@ static int ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
*pos++ = (u8) (rate / 5);
}
return __ieee80211_sta_join_ibss(sdata,
bssid, local->hw.conf.beacon_int,
local->hw.conf.channel->center_freq,
sband->n_bitrates, supp_rates,
capability, 0);
__ieee80211_sta_join_ibss(sdata, bssid, local->hw.conf.beacon_int,
ifibss->channel, sband->n_bitrates,
supp_rates, capability, 0);
}
static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_local *local = sdata->local;
struct ieee80211_bss *bss;
struct ieee80211_channel *chan = NULL;
const u8 *bssid = NULL;
int active_ibss;
if (ifibss->ssid_len == 0)
return -EINVAL;
active_ibss = ieee80211_sta_active_ibss(sdata);
#ifdef CONFIG_MAC80211_IBSS_DEBUG
printk(KERN_DEBUG "%s: sta_find_ibss (active_ibss=%d)\n",
@ -525,11 +508,15 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
if (active_ibss)
return 0;
return;
if (ifibss->flags & IEEE80211_IBSS_BSSID_SET)
if (ifibss->fixed_bssid)
bssid = ifibss->bssid;
bss = (void *)cfg80211_get_bss(local->hw.wiphy, NULL, bssid,
if (ifibss->fixed_channel)
chan = ifibss->channel;
if (!is_zero_ether_addr(ifibss->bssid))
bssid = ifibss->bssid;
bss = (void *)cfg80211_get_bss(local->hw.wiphy, chan, bssid,
ifibss->ssid, ifibss->ssid_len,
WLAN_CAPABILITY_IBSS,
WLAN_CAPABILITY_IBSS);
@ -540,18 +527,14 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
"%pM\n", bss->cbss.bssid, ifibss->bssid);
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
if (bss &&
(!(ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET) ||
memcmp(ifibss->bssid, bss->cbss.bssid, ETH_ALEN))) {
int ret;
if (bss && memcmp(ifibss->bssid, bss->cbss.bssid, ETH_ALEN)) {
printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM"
" based on configured SSID\n",
sdata->dev->name, bss->cbss.bssid);
ret = ieee80211_sta_join_ibss(sdata, bss);
ieee80211_sta_join_ibss(sdata, bss);
ieee80211_rx_bss_put(local, bss);
return ret;
return;
} else if (bss)
ieee80211_rx_bss_put(local, bss);
@ -562,29 +545,31 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
/* Selected IBSS not found in current scan results - try to scan */
if (ifibss->state == IEEE80211_IBSS_MLME_JOINED &&
!ieee80211_sta_active_ibss(sdata)) {
mod_timer(&ifibss->timer, jiffies +
IEEE80211_IBSS_MERGE_INTERVAL);
} else if (time_after(jiffies, local->last_scan_completed +
mod_timer(&ifibss->timer,
round_jiffies(jiffies + IEEE80211_IBSS_MERGE_INTERVAL));
} else if (time_after(jiffies, ifibss->last_scan_completed +
IEEE80211_SCAN_INTERVAL)) {
printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
"join\n", sdata->dev->name);
/* XXX maybe racy? */
if (local->scan_req)
return -EBUSY;
return;
memcpy(local->int_scan_req.ssids[0].ssid,
ifibss->ssid, IEEE80211_MAX_SSID_LEN);
local->int_scan_req.ssids[0].ssid_len = ifibss->ssid_len;
return ieee80211_request_scan(sdata, &local->int_scan_req);
local->int_scan_req.ssids[0].ssid_len =
ifibss->ssid_len;
ieee80211_request_scan(sdata, &local->int_scan_req);
} else if (ifibss->state != IEEE80211_IBSS_MLME_JOINED) {
int interval = IEEE80211_SCAN_INTERVAL;
if (time_after(jiffies, ifibss->ibss_join_req +
IEEE80211_IBSS_JOIN_TIMEOUT)) {
if (!(local->oper_channel->flags &
IEEE80211_CHAN_NO_IBSS))
return ieee80211_sta_create_ibss(sdata);
if (!(local->oper_channel->flags & IEEE80211_CHAN_NO_IBSS)) {
ieee80211_sta_create_ibss(sdata);
return;
}
printk(KERN_DEBUG "%s: IBSS not allowed on"
" %d MHz\n", sdata->dev->name,
local->hw.conf.channel->center_freq);
@ -595,11 +580,9 @@ static int ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
}
ifibss->state = IEEE80211_IBSS_MLME_SEARCH;
mod_timer(&ifibss->timer, jiffies + interval);
return 0;
mod_timer(&ifibss->timer,
round_jiffies(jiffies + interval));
}
return 0;
}
static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
@ -614,7 +597,7 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
u8 *pos, *end;
if (ifibss->state != IEEE80211_IBSS_MLME_JOINED ||
len < 24 + 2 || !ifibss->probe_resp)
len < 24 + 2 || !ifibss->presp)
return;
if (local->ops->tx_last_beacon)
@ -649,13 +632,13 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
}
if (pos[1] != 0 &&
(pos[1] != ifibss->ssid_len ||
memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len) != 0)) {
!memcmp(pos + 2, ifibss->ssid, ifibss->ssid_len))) {
/* Ignore ProbeReq for foreign SSID */
return;
}
/* Reply with ProbeResp */
skb = skb_copy(ifibss->probe_resp, GFP_KERNEL);
skb = skb_copy(ifibss->presp, GFP_KERNEL);
if (!skb)
return;
@ -794,89 +777,21 @@ void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata)
setup_timer(&ifibss->timer, ieee80211_ibss_timer,
(unsigned long) sdata);
skb_queue_head_init(&ifibss->skb_queue);
ifibss->flags |= IEEE80211_IBSS_AUTO_BSSID_SEL |
IEEE80211_IBSS_AUTO_CHANNEL_SEL;
}
int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
ifibss->flags &= ~IEEE80211_IBSS_PREV_BSSID_SET;
if (ifibss->ssid_len)
ifibss->flags |= IEEE80211_IBSS_SSID_SET;
else
ifibss->flags &= ~IEEE80211_IBSS_SSID_SET;
ifibss->ibss_join_req = jiffies;
ifibss->state = IEEE80211_IBSS_MLME_SEARCH;
set_bit(IEEE80211_IBSS_REQ_RUN, &ifibss->request);
return 0;
}
int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
if (len > IEEE80211_MAX_SSID_LEN)
return -EINVAL;
if (ifibss->ssid_len != len || memcmp(ifibss->ssid, ssid, len) != 0) {
memset(ifibss->ssid, 0, sizeof(ifibss->ssid));
memcpy(ifibss->ssid, ssid, len);
ifibss->ssid_len = len;
}
return ieee80211_ibss_commit(sdata);
}
int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
memcpy(ssid, ifibss->ssid, ifibss->ssid_len);
*len = ifibss->ssid_len;
return 0;
}
int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
if (is_valid_ether_addr(bssid)) {
memcpy(ifibss->bssid, bssid, ETH_ALEN);
ifibss->flags |= IEEE80211_IBSS_BSSID_SET;
} else {
memset(ifibss->bssid, 0, ETH_ALEN);
ifibss->flags &= ~IEEE80211_IBSS_BSSID_SET;
}
if (netif_running(sdata->dev)) {
if (ieee80211_if_config(sdata, IEEE80211_IFCC_BSSID)) {
printk(KERN_DEBUG "%s: Failed to config new BSSID to "
"the low-level driver\n", sdata->dev->name);
}
}
return ieee80211_ibss_commit(sdata);
}
/* scan finished notification */
void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local)
{
struct ieee80211_sub_if_data *sdata = local->scan_sdata;
struct ieee80211_if_ibss *ifibss;
struct ieee80211_sub_if_data *sdata;
if (sdata && sdata->vif.type == NL80211_IFTYPE_ADHOC) {
ifibss = &sdata->u.ibss;
if ((!(ifibss->flags & IEEE80211_IBSS_PREV_BSSID_SET)) ||
!ieee80211_sta_active_ibss(sdata))
ieee80211_sta_find_ibss(sdata);
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list) {
if (sdata->vif.type != NL80211_IFTYPE_ADHOC)
continue;
sdata->u.ibss.last_scan_completed = jiffies;
ieee80211_sta_find_ibss(sdata);
}
rcu_read_unlock();
}
ieee80211_rx_result
@ -906,3 +821,71 @@ ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
return RX_DROP_MONITOR;
}
int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
struct cfg80211_ibss_params *params)
{
struct sk_buff *skb;
memcpy(sdata->u.ibss.ssid, params->ssid, IEEE80211_MAX_SSID_LEN);
sdata->u.ibss.ssid_len = params->ssid_len;
if (params->bssid) {
memcpy(sdata->u.ibss.bssid, params->bssid, ETH_ALEN);
sdata->u.ibss.fixed_bssid = true;
} else
sdata->u.ibss.fixed_bssid = false;
sdata->u.ibss.channel = params->channel;
sdata->u.ibss.fixed_channel = params->channel_fixed;
if (params->ie) {
sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len,
GFP_KERNEL);
if (sdata->u.ibss.ie)
sdata->u.ibss.ie_len = params->ie_len;
}
skb = dev_alloc_skb(sdata->local->hw.extra_tx_headroom +
36 /* bitrates */ +
34 /* SSID */ +
3 /* DS params */ +
4 /* IBSS params */ +
params->ie_len);
if (!skb)
return -ENOMEM;
sdata->u.ibss.skb = skb;
sdata->u.ibss.state = IEEE80211_IBSS_MLME_SEARCH;
sdata->u.ibss.ibss_join_req = jiffies;
set_bit(IEEE80211_IBSS_REQ_RUN, &sdata->u.ibss.request);
queue_work(sdata->local->hw.workqueue, &sdata->u.ibss.work);
return 0;
}
int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
{
struct sk_buff *skb;
del_timer_sync(&sdata->u.ibss.timer);
clear_bit(IEEE80211_IBSS_REQ_RUN, &sdata->u.ibss.request);
cancel_work_sync(&sdata->u.ibss.work);
clear_bit(IEEE80211_IBSS_REQ_RUN, &sdata->u.ibss.request);
sta_info_flush(sdata->local, sdata);
/* remove beacon */
kfree(sdata->u.ibss.ie);
skb = sdata->u.ibss.presp;
rcu_assign_pointer(sdata->u.ibss.presp, NULL);
ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON_ENABLED);
synchronize_rcu();
kfree_skb(skb);
skb_queue_purge(&sdata->u.ibss.skb_queue);
memset(sdata->u.ibss.bssid, 0, ETH_ALEN);
return 0;
}

35
net/mac80211/ieee80211_i.h
View file

@ -323,14 +323,6 @@ struct ieee80211_if_managed {
size_t sme_auth_ie_len;
};
enum ieee80211_ibss_flags {
IEEE80211_IBSS_AUTO_CHANNEL_SEL = BIT(0),
IEEE80211_IBSS_AUTO_BSSID_SEL = BIT(1),
IEEE80211_IBSS_BSSID_SET = BIT(2),
IEEE80211_IBSS_PREV_BSSID_SET = BIT(3),
IEEE80211_IBSS_SSID_SET = BIT(4),
};
enum ieee80211_ibss_request {
IEEE80211_IBSS_REQ_RUN = 0,
};
@ -341,17 +333,20 @@ struct ieee80211_if_ibss {
struct sk_buff_head skb_queue;
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len;
u32 flags;
unsigned long request;
unsigned long last_scan_completed;
bool fixed_bssid;
bool fixed_channel;
u8 bssid[ETH_ALEN];
unsigned long request;
u8 ssid[IEEE80211_MAX_SSID_LEN];
u8 ssid_len, ie_len;
u8 *ie;
struct ieee80211_channel *channel;
unsigned long ibss_join_req;
struct sk_buff *probe_resp; /* ProbeResp template for IBSS */
/* probe response/beacon for IBSS */
struct sk_buff *presp, *skb;
enum {
IEEE80211_IBSS_MLME_SEARCH,
@ -630,8 +625,6 @@ struct ieee80211_local {
spinlock_t sta_lock;
unsigned long num_sta;
struct list_head sta_list;
struct list_head sta_flush_list;
struct work_struct sta_flush_work;
struct sta_info *sta_hash[STA_HASH_SIZE];
struct timer_list sta_cleanup;
@ -681,7 +674,6 @@ struct ieee80211_local {
int scan_ies_len;
enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
unsigned long last_scan_completed;
struct delayed_work scan_work;
struct ieee80211_sub_if_data *scan_sdata;
enum nl80211_channel_type oper_channel_type;
@ -946,10 +938,6 @@ int ieee80211_max_network_latency(struct notifier_block *nb,
unsigned long data, void *dummy);
/* IBSS code */
int ieee80211_ibss_commit(struct ieee80211_sub_if_data *sdata);
int ieee80211_ibss_set_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t len);
int ieee80211_ibss_get_ssid(struct ieee80211_sub_if_data *sdata, char *ssid, size_t *len);
int ieee80211_ibss_set_bssid(struct ieee80211_sub_if_data *sdata, u8 *bssid);
void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local);
void ieee80211_ibss_setup_sdata(struct ieee80211_sub_if_data *sdata);
ieee80211_rx_result
@ -957,6 +945,9 @@ ieee80211_ibss_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
struct ieee80211_rx_status *rx_status);
struct sta_info *ieee80211_ibss_add_sta(struct ieee80211_sub_if_data *sdata,
u8 *bssid, u8 *addr, u32 supp_rates);
int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
struct cfg80211_ibss_params *params);
int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata);
/* scan/BSS handling */
void ieee80211_scan_work(struct work_struct *work);

12
net/mac80211/iface.c
View file

@ -235,11 +235,7 @@ static int ieee80211_open(struct net_device *dev)
netif_addr_unlock_bh(local->mdev);
break;
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
if (sdata->vif.type == NL80211_IFTYPE_STATION)
sdata->u.mgd.flags &= ~IEEE80211_STA_PREV_BSSID_SET;
else
sdata->u.ibss.flags &= ~IEEE80211_IBSS_PREV_BSSID_SET;
sdata->u.mgd.flags &= ~IEEE80211_STA_PREV_BSSID_SET;
/* fall through */
default:
conf.vif = &sdata->vif;
@ -327,8 +323,6 @@ static int ieee80211_open(struct net_device *dev)
*/
if (sdata->vif.type == NL80211_IFTYPE_STATION)
queue_work(local->hw.workqueue, &sdata->u.mgd.work);
else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
queue_work(local->hw.workqueue, &sdata->u.ibss.work);
netif_tx_start_all_queues(dev);
@ -499,7 +493,6 @@ static int ieee80211_stop(struct net_device *dev)
/* fall through */
case NL80211_IFTYPE_ADHOC:
if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
memset(sdata->u.ibss.bssid, 0, ETH_ALEN);
del_timer_sync(&sdata->u.ibss.timer);
cancel_work_sync(&sdata->u.ibss.work);
synchronize_rcu();
@ -653,7 +646,8 @@ static void ieee80211_teardown_sdata(struct net_device *dev)
mesh_rmc_free(sdata);
break;
case NL80211_IFTYPE_ADHOC:
kfree_skb(sdata->u.ibss.probe_resp);
if (WARN_ON(sdata->u.ibss.presp))
kfree_skb(sdata->u.ibss.presp);
break;
case NL80211_IFTYPE_STATION:
kfree(sdata->u.mgd.extra_ie);

2
net/mac80211/main.c
View file

@ -209,7 +209,7 @@ int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed)
!!rcu_dereference(sdata->u.ap.beacon);
break;
case NL80211_IFTYPE_ADHOC:
conf.enable_beacon = !!sdata->u.ibss.probe_resp;
conf.enable_beacon = !!sdata->u.ibss.presp;
break;
case NL80211_IFTYPE_MESH_POINT:
conf.enable_beacon = true;

2
net/mac80211/scan.c
View file

@ -295,8 +295,6 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
cfg80211_scan_done(local->scan_req, aborted);
local->scan_req = NULL;
local->last_scan_completed = jiffies;
if (local->hw_scanning) {
local->hw_scanning = false;
/*

71
net/mac80211/sta_info.c
View file

@ -686,41 +686,10 @@ static void sta_info_debugfs_add_work(struct work_struct *work)
}
#endif
static void __ieee80211_run_pending_flush(struct ieee80211_local *local)
{
struct sta_info *sta;
unsigned long flags;
ASSERT_RTNL();
spin_lock_irqsave(&local->sta_lock, flags);
while (!list_empty(&local->sta_flush_list)) {
sta = list_first_entry(&local->sta_flush_list,
struct sta_info, list);
list_del(&sta->list);
spin_unlock_irqrestore(&local->sta_lock, flags);
sta_info_destroy(sta);
spin_lock_irqsave(&local->sta_lock, flags);
}
spin_unlock_irqrestore(&local->sta_lock, flags);
}
static void ieee80211_sta_flush_work(struct work_struct *work)
{
struct ieee80211_local *local =
container_of(work, struct ieee80211_local, sta_flush_work);
rtnl_lock();
__ieee80211_run_pending_flush(local);
rtnl_unlock();
}
void sta_info_init(struct ieee80211_local *local)
{
spin_lock_init(&local->sta_lock);
INIT_LIST_HEAD(&local->sta_list);
INIT_LIST_HEAD(&local->sta_flush_list);
INIT_WORK(&local->sta_flush_work, ieee80211_sta_flush_work);
setup_timer(&local->sta_cleanup, sta_info_cleanup,
(unsigned long)local);
@ -741,7 +710,6 @@ int sta_info_start(struct ieee80211_local *local)
void sta_info_stop(struct ieee80211_local *local)
{
del_timer(&local->sta_cleanup);
cancel_work_sync(&local->sta_flush_work);
#ifdef CONFIG_MAC80211_DEBUGFS
/*
* Make sure the debugfs adding work isn't pending after this
@ -752,10 +720,7 @@ void sta_info_stop(struct ieee80211_local *local)
cancel_work_sync(&local->sta_debugfs_add);
#endif
rtnl_lock();
sta_info_flush(local, NULL);
__ieee80211_run_pending_flush(local);
rtnl_unlock();
}
/**
@ -767,7 +732,7 @@ void sta_info_stop(struct ieee80211_local *local)
* @sdata: matching rule for the net device (sta->dev) or %NULL to match all STAs
*/
int sta_info_flush(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata)
struct ieee80211_sub_if_data *sdata)
{
struct sta_info *sta, *tmp;
LIST_HEAD(tmp_list);
@ -775,7 +740,6 @@ int sta_info_flush(struct ieee80211_local *local,
unsigned long flags;
might_sleep();
ASSERT_RTNL();
spin_lock_irqsave(&local->sta_lock, flags);
list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
@ -795,39 +759,6 @@ int sta_info_flush(struct ieee80211_local *local,
return ret;
}
/**
* sta_info_flush_delayed - flush matching STA entries from the STA table
*
* This function unlinks all stations for a given interface and queues
* them for freeing. Note that the workqueue function scheduled here has
* to run before any new keys can be added to the system to avoid set_key()
* callback ordering issues.
*
* @sdata: the interface
*/
void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_local *local = sdata->local;
struct sta_info *sta, *tmp;
unsigned long flags;
bool work = false;
spin_lock_irqsave(&local->sta_lock, flags);
list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
if (sdata == sta->sdata) {
__sta_info_unlink(&sta);
if (sta) {
list_add_tail(&sta->list,
&local->sta_flush_list);
work = true;
}
}
}
if (work)
schedule_work(&local->sta_flush_work);
spin_unlock_irqrestore(&local->sta_lock, flags);
}
void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
unsigned long exp_time)
{

3
net/mac80211/sta_info.h
View file

@ -442,8 +442,7 @@ void sta_info_init(struct ieee80211_local *local);
int sta_info_start(struct ieee80211_local *local);
void sta_info_stop(struct ieee80211_local *local);
int sta_info_flush(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata);
void sta_info_flush_delayed(struct ieee80211_sub_if_data *sdata);
struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
unsigned long exp_time);

6
net/mac80211/tx.c
View file

@ -2102,18 +2102,18 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_hdr *hdr;
struct sk_buff *presp = rcu_dereference(ifibss->presp);
if (!ifibss->probe_resp)
if (!presp)
goto out;
skb = skb_copy(ifibss->probe_resp, GFP_ATOMIC);
skb = skb_copy(presp, GFP_ATOMIC);
if (!skb)
goto out;
hdr = (struct ieee80211_hdr *) skb->data;
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_BEACON);
} else if (ieee80211_vif_is_mesh(&sdata->vif)) {
struct ieee80211_mgmt *mgmt;
u8 *pos;

63
net/mac80211/wext.c
View file

@ -149,17 +149,14 @@ static int ieee80211_ioctl_siwfreq(struct net_device *dev,
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_CHANNEL_SEL;
return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra);
else if (sdata->vif.type == NL80211_IFTYPE_STATION)
sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_CHANNEL_SEL;
/* freq->e == 0: freq->m = channel; otherwise freq = m * 10^e */
if (freq->e == 0) {
if (freq->m < 0) {
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
sdata->u.ibss.flags |=
IEEE80211_IBSS_AUTO_CHANNEL_SEL;
else if (sdata->vif.type == NL80211_IFTYPE_STATION)
if (sdata->vif.type == NL80211_IFTYPE_STATION)
sdata->u.mgd.flags |=
IEEE80211_STA_AUTO_CHANNEL_SEL;
return 0;
@ -183,6 +180,10 @@ static int ieee80211_ioctl_giwfreq(struct net_device *dev,
struct iw_freq *freq, char *extra)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
freq->m = local->hw.conf.channel->center_freq;
freq->e = 6;
@ -195,15 +196,17 @@ static int ieee80211_ioctl_siwessid(struct net_device *dev,
struct iw_request_info *info,
struct iw_point *data, char *ssid)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
size_t len = data->length;
int ret;
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
/* iwconfig uses nul termination in SSID.. */
if (len > 0 && ssid[len - 1] == '\0')
len--;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
if (data->flags)
sdata->u.mgd.flags &= ~IEEE80211_STA_AUTO_SSID_SEL;
@ -217,8 +220,7 @@ static int ieee80211_ioctl_siwessid(struct net_device *dev,
sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
ieee80211_sta_req_auth(sdata);
return 0;
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return ieee80211_ibss_set_ssid(sdata, ssid, len);
}
return -EOPNOTSUPP;
}
@ -229,9 +231,13 @@ static int ieee80211_ioctl_giwessid(struct net_device *dev,
struct iw_point *data, char *ssid)
{
size_t len;
struct ieee80211_sub_if_data *sdata;
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
int res = ieee80211_sta_get_ssid(sdata, ssid, &len);
if (res == 0) {
@ -240,14 +246,6 @@ static int ieee80211_ioctl_giwessid(struct net_device *dev,
} else
data->flags = 0;
return res;
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
int res = ieee80211_ibss_get_ssid(sdata, ssid, &len);
if (res == 0) {
data->length = len;
data->flags = 1;
} else
data->flags = 0;
return res;
}
return -EOPNOTSUPP;
@ -258,9 +256,11 @@ static int ieee80211_ioctl_siwap(struct net_device *dev,
struct iw_request_info *info,
struct sockaddr *ap_addr, char *extra)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
int ret;
@ -277,16 +277,6 @@ static int ieee80211_ioctl_siwap(struct net_device *dev,
sdata->u.mgd.flags &= ~IEEE80211_STA_EXT_SME;
ieee80211_sta_req_auth(sdata);
return 0;
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
if (is_zero_ether_addr((u8 *) &ap_addr->sa_data))
sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL |
IEEE80211_IBSS_AUTO_CHANNEL_SEL;
else if (is_broadcast_ether_addr((u8 *) &ap_addr->sa_data))
sdata->u.ibss.flags |= IEEE80211_IBSS_AUTO_BSSID_SEL;
else
sdata->u.ibss.flags &= ~IEEE80211_IBSS_AUTO_BSSID_SEL;
return ieee80211_ibss_set_bssid(sdata, (u8 *) &ap_addr->sa_data);
} else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
/*
* If it is necessary to update the WDS peer address
@ -312,9 +302,11 @@ static int ieee80211_ioctl_giwap(struct net_device *dev,
struct iw_request_info *info,
struct sockaddr *ap_addr, char *extra)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
if (sdata->u.mgd.state == IEEE80211_STA_MLME_ASSOCIATED) {
ap_addr->sa_family = ARPHRD_ETHER;
@ -322,13 +314,6 @@ static int ieee80211_ioctl_giwap(struct net_device *dev,
} else
memset(&ap_addr->sa_data, 0, ETH_ALEN);
return 0;
} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
if (sdata->u.ibss.state == IEEE80211_IBSS_MLME_JOINED) {
ap_addr->sa_family = ARPHRD_ETHER;
memcpy(&ap_addr->sa_data, sdata->u.ibss.bssid, ETH_ALEN);
} else
memset(&ap_addr->sa_data, 0, ETH_ALEN);
return 0;
} else if (sdata->vif.type == NL80211_IFTYPE_WDS) {
ap_addr->sa_family = ARPHRD_ETHER;
memcpy(&ap_addr->sa_data, sdata->u.wds.remote_addr, ETH_ALEN);