mac80211: refactor common auth/assoc setup code
As associating is possible without first authenticating
(for FT over DS) association also has to be able to
switch to the right channel, insert the station entry
etc. Factor out this common code into a new function
called ieee80211_prep_connection().
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 5c82354..81e0124 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3089,6 +3089,60 @@
return 0;
}
+static int ieee80211_prep_connection(struct ieee80211_sub_if_data *sdata,
+ struct cfg80211_bss *bss, bool assoc)
+{
+ struct ieee80211_local *local = sdata->local;
+ struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
+ struct sta_info *sta;
+ bool have_sta = false;
+ int err;
+
+ if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data))
+ return -EINVAL;
+
+ if (assoc) {
+ rcu_read_lock();
+ have_sta = sta_info_get(sdata, bss->bssid);
+ rcu_read_unlock();
+ }
+
+ if (!have_sta) {
+ sta = sta_info_alloc(sdata, bss->bssid, GFP_KERNEL);
+ if (!sta)
+ return -ENOMEM;
+ }
+
+ mutex_lock(&local->mtx);
+ ieee80211_recalc_idle(sdata->local);
+ mutex_unlock(&local->mtx);
+
+ /* switch to the right channel */
+ local->oper_channel = bss->channel;
+ ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
+
+ if (!have_sta) {
+ /* set BSSID - if STA already there this will be set too */
+ memcpy(ifmgd->bssid, bss->bssid, ETH_ALEN);
+ ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
+
+ if (assoc)
+ sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
+
+ err = sta_info_insert(sta);
+ sta = NULL;
+ if (err) {
+ printk(KERN_DEBUG
+ "%s: failed to insert STA entry for the AP (error %d)\n",
+ sdata->name, err);
+ return err;
+ }
+ } else
+ WARN_ON_ONCE(compare_ether_addr(ifmgd->bssid, bss->bssid));
+
+ return 0;
+}
+
/* config hooks */
int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
struct cfg80211_auth_request *req)
@@ -3096,7 +3150,6 @@
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_mgd_auth_data *auth_data;
- struct sta_info *sta;
u16 auth_alg;
int err;
@@ -3162,32 +3215,9 @@
printk(KERN_DEBUG "%s: authenticate with %pM\n",
sdata->name, req->bss->bssid);
- mutex_lock(&local->mtx);
- ieee80211_recalc_idle(sdata->local);
- mutex_unlock(&local->mtx);
-
- /* switch to the right channel */
- local->oper_channel = req->bss->channel;
- ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
-
- /* set BSSID */
- memcpy(ifmgd->bssid, req->bss->bssid, ETH_ALEN);
- ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
-
- /* add station entry */
- sta = sta_info_alloc(sdata, req->bss->bssid, GFP_KERNEL);
- if (!sta) {
- err = -ENOMEM;
+ err = ieee80211_prep_connection(sdata, req->bss, false);
+ if (err)
goto err_clear;
- }
-
- err = sta_info_insert(sta);
- if (err) {
- printk(KERN_DEBUG
- "%s: failed to insert STA entry for the AP %pM (error %d)\n",
- sdata->name, req->bss->bssid, err);
- goto err_clear;
- }
err = ieee80211_probe_auth(sdata);
if (err) {
@@ -3218,7 +3248,6 @@
struct ieee80211_bss *bss = (void *)req->bss->priv;
struct ieee80211_mgd_assoc_data *assoc_data;
struct ieee80211_supported_band *sband;
- struct sta_info *sta;
const u8 *ssidie;
int i, err;
@@ -3343,41 +3372,9 @@
ifmgd->assoc_data = assoc_data;
- mutex_lock(&local->mtx);
- ieee80211_recalc_idle(sdata->local);
- mutex_unlock(&local->mtx);
-
- /* switch to the right channel */
- local->oper_channel = req->bss->channel;
- ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
-
- rcu_read_lock();
- sta = sta_info_get(sdata, req->bss->bssid);
- rcu_read_unlock();
-
- if (!sta) {
- /* set BSSID */
- memcpy(ifmgd->bssid, req->bss->bssid, ETH_ALEN);
- ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BSSID);
-
- sta = sta_info_alloc(sdata, req->bss->bssid, GFP_KERNEL);
- if (!sta) {
- err = -ENOMEM;
- goto err_clear;
- }
-
- sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
-
- err = sta_info_insert(sta);
- sta = NULL;
- if (err) {
- printk(KERN_DEBUG
- "%s: failed to insert STA entry for the AP (error %d)\n",
- sdata->name, err);
- goto err_clear;
- }
- } else
- WARN_ON_ONCE(compare_ether_addr(ifmgd->bssid, req->bss->bssid));
+ err = ieee80211_prep_connection(sdata, req->bss, true);
+ if (err)
+ goto err_clear;
if (!bss->dtim_period &&
sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) {