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authorJohannes Berg <johannes.berg@intel.com>2012-03-08 15:02:07 +0100
committerJohn W. Linville <linville@tuxdriver.com>2012-03-12 14:22:15 -0400
commita1cf775deae9d0f1e5475337ab13c593ad427cee (patch)
tree082c8056bf934cf9d60860fcc80bbab8fe65ce23 /net
parent0775f9f90cdaf40fbf69b3192b3dddb2b3436f45 (diff)
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>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/mlme.c121
1 files changed, 59 insertions, 62 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 5c82354d18c..81e0124e68c 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -3089,6 +3089,60 @@ int ieee80211_max_network_latency(struct notifier_block *nb,
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 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
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 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
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;
- 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);
+ err = ieee80211_prep_connection(sdata, req->bss, false);
+ if (err)
goto err_clear;
- }
err = ieee80211_probe_auth(sdata);
if (err) {
@@ -3218,7 +3248,6 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
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 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
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) {