mac80211: support secondary channel offset in CSA
Add support for the secondary channel offset IE in channel
switch announcements. This is necessary for proper handling
of CSA on HT access points.
For this to work it is also necessary to convert everything
here to use chandef structs instead of just channels. The
driver updates aren't really correct though. In particular,
the TI wl18xx driver update can't possibly be right since
it just ignores the new channel width for lack of firmware
API.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/dvm/mac80211.c b/drivers/net/wireless/iwlwifi/dvm/mac80211.c
index a7294fa..2dc101f 100644
--- a/drivers/net/wireless/iwlwifi/dvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/dvm/mac80211.c
@@ -967,7 +967,7 @@
{
struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw);
struct ieee80211_conf *conf = &hw->conf;
- struct ieee80211_channel *channel = ch_switch->channel;
+ struct ieee80211_channel *channel = ch_switch->chandef.chan;
struct iwl_ht_config *ht_conf = &priv->current_ht_config;
/*
* MULTI-FIXME
@@ -1005,11 +1005,21 @@
priv->current_ht_config.smps = conf->smps_mode;
/* Configure HT40 channels */
- ctx->ht.enabled = conf_is_ht(conf);
- if (ctx->ht.enabled)
- iwlagn_config_ht40(conf, ctx);
- else
+ switch (cfg80211_get_chandef_type(&ch_switch->chandef)) {
+ case NL80211_CHAN_NO_HT:
+ case NL80211_CHAN_HT20:
ctx->ht.is_40mhz = false;
+ ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
+ break;
+ case NL80211_CHAN_HT40MINUS:
+ ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
+ ctx->ht.is_40mhz = true;
+ break;
+ case NL80211_CHAN_HT40PLUS:
+ ctx->ht.extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
+ ctx->ht.is_40mhz = true;
+ break;
+ }
if ((le16_to_cpu(ctx->staging.channel) != ch))
ctx->staging.flags = 0;