diff options
| author |   Johannes Berg <johannes.berg@intel.com> | 2012-09-05 13:07:00 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2012-09-06 17:11:00 +0200 |
| commit | 761a48d2603c0ff48024bc70c129b00ec37639ed (patch) | |
| tree | a445a44200d62a5304335dd31be3e3d9a44289f1 /net/mac80211/mlme.c | |
| parent | mac80211_hwsim: move module_init/exit (diff) | |
| download | linux-dev-761a48d2603c0ff48024bc70c129b00ec37639ed.tar.xz linux-dev-761a48d2603c0ff48024bc70c129b00ec37639ed.zip | |
mac80211: check power constraint IE size when parsing
The power constraint IE is always a single byte
so check the size when parsing instead of later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/mlme.c')
| -rw-r--r-- | net/mac80211/mlme.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 6e374cb04af6..87466942fa82 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -821,18 +821,13 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, } static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, - u16 capab_info, u8 *pwr_constr_elem, - u8 pwr_constr_elem_len) + u16 capab_info, u8 *pwr_constr_elem) { struct ieee80211_conf *conf = &sdata->local->hw.conf; if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT)) return; - /* Power constraint IE length should be 1 octet */ - if (pwr_constr_elem_len != 1) - return; - if ((*pwr_constr_elem <= conf->channel->max_reg_power) && (*pwr_constr_elem != sdata->local->power_constr_level)) { sdata->local->power_constr_level = *pwr_constr_elem; @@ -2552,8 +2547,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, if (elems.pwr_constr_elem) ieee80211_handle_pwr_constr(sdata, le16_to_cpu(mgmt->u.probe_resp.capab_info), - elems.pwr_constr_elem, - elems.pwr_constr_elem_len); + elems.pwr_constr_elem); } ieee80211_bss_info_change_notify(sdata, changed); |