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authorSimon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>2013-07-11 18:07:46 +0200
committerJohannes Berg <johannes.berg@intel.com>2013-07-16 09:58:12 +0300
commit2ec9c1f67ab1f58b5bf5ac19e4b61b9f75c83a04 (patch)
tree8e5b9f057f655cbbae4dd718173676f7b50d5b27 /net/mac80211
parentbf3726457276c8773ec97da30c6459caf512b22f (diff)
downloadlinux-2ec9c1f67ab1f58b5bf5ac19e4b61b9f75c83a04.tar.bz2
mac80211: fix regression when initializing ibss wmm params
There appear to be two regressions in ibss.c when calling ieee80211_sta_def_wmm_params(): * the second argument should be a rate length, not a rate array. This was introduced by my commit "mac80211: select and adjust bitrates according to channel mode" * the third argument is not initialized (anymore), making further checks within this function useless. Since ieee80211_sta_def_wmm_params() is only used by ibss anyway, remove the function entirely and handle the operating mode decision immediately. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/ibss.c12
-rw-r--r--net/mac80211/ieee80211_i.h3
-rw-r--r--net/mac80211/util.c26
3 files changed, 10 insertions, 31 deletions
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 449702df24ab..83197c3ae5f1 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -49,9 +49,9 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband;
struct cfg80211_bss *bss;
u32 bss_change, rate_flags, rates = 0, rates_added = 0;
- u8 supp_rates[IEEE80211_MAX_SUPP_RATES];
struct cfg80211_chan_def chandef;
enum nl80211_bss_scan_width scan_width;
+ bool have_higher_than_11mbit = false;
struct beacon_data *presp;
int frame_len;
int shift;
@@ -149,6 +149,8 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
for (i = 0; i < sband->n_bitrates; i++) {
if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
continue;
+ if (sband->bitrates[i].bitrate > 110)
+ have_higher_than_11mbit = true;
rates |= BIT(i);
rates_n++;
@@ -270,11 +272,17 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
sdata->vif.bss_conf.use_short_slot = chan->band == IEEE80211_BAND_5GHZ;
bss_change |= BSS_CHANGED_ERP_SLOT;
+ /* cf. IEEE 802.11 9.2.12 */
+ if (chan->band == IEEE80211_BAND_2GHZ && have_higher_than_11mbit)
+ sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
+ else
+ sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
+
sdata->vif.bss_conf.ibss_joined = true;
sdata->vif.bss_conf.ibss_creator = creator;
ieee80211_bss_info_change_notify(sdata, bss_change);
- ieee80211_sta_def_wmm_params(sdata, rates, supp_rates);
+ ieee80211_set_wmm_default(sdata, true);
ifibss->state = IEEE80211_IBSS_MLME_JOINED;
mod_timer(&ifibss->timer,
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 23a191b03bbf..3d32df1fbc6d 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1615,9 +1615,6 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u32 ratemask, bool directed, u32 tx_flags,
struct ieee80211_channel *channel, bool scan);
-void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
- const size_t supp_rates_len,
- const u8 *supp_rates);
u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems,
enum ieee80211_band band, u32 *basic_rates);
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 1e45891ca219..d23c5a705a68 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1073,32 +1073,6 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata,
}
}
-void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
- const size_t supp_rates_len,
- const u8 *supp_rates)
-{
- struct ieee80211_chanctx_conf *chanctx_conf;
- int i, have_higher_than_11mbit = 0;
-
- /* cf. IEEE 802.11 9.2.12 */
- for (i = 0; i < supp_rates_len; i++)
- if ((supp_rates[i] & 0x7f) * 5 > 110)
- have_higher_than_11mbit = 1;
-
- rcu_read_lock();
- chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
-
- if (chanctx_conf &&
- chanctx_conf->def.chan->band == IEEE80211_BAND_2GHZ &&
- have_higher_than_11mbit)
- sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
- else
- sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
- rcu_read_unlock();
-
- ieee80211_set_wmm_default(sdata, true);
-}
-
void ieee80211_send_auth(struct ieee80211_sub_if_data *sdata,
u16 transaction, u16 auth_alg, u16 status,
const u8 *extra, size_t extra_len, const u8 *da,