mac80211: refactor HT/VHT to chandef code

The station MLME and IBSS/mesh ones use entirely different
code for interpreting HT and VHT operation elements. Change
the code that interprets them a bit - it now modifies an
existing chandef - and use it also in the MLME code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 4 insertions, 37 deletions

diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 4af9b2bcc020..e6d198b981ab 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -196,16 +196,7 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 
 	/* check 40 MHz support, if we have it */
 	if (sta_ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
-		switch (ht_oper->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
-		case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
-			chandef->width = NL80211_CHAN_WIDTH_40;
-			chandef->center_freq1 += 10;
-			break;
-		case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
-			chandef->width = NL80211_CHAN_WIDTH_40;
-			chandef->center_freq1 -= 10;
-			break;
-		}
+		ieee80211_chandef_ht_oper(ht_oper, chandef);
 	} else {
 		/* 40 MHz (and 80 MHz) must be supported for VHT */
 		ret = IEEE80211_STA_DISABLE_VHT;
@@ -219,35 +210,11 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
 		goto out;
 	}
 
-	vht_chandef.chan = channel;
-	vht_chandef.center_freq1 =
-		ieee80211_channel_to_frequency(vht_oper->center_freq_seg1_idx,
-					       channel->band);
-	vht_chandef.center_freq2 = 0;
-
-	switch (vht_oper->chan_width) {
-	case IEEE80211_VHT_CHANWIDTH_USE_HT:
-		vht_chandef.width = chandef->width;
-		vht_chandef.center_freq1 = chandef->center_freq1;
-		break;
-	case IEEE80211_VHT_CHANWIDTH_80MHZ:
-		vht_chandef.width = NL80211_CHAN_WIDTH_80;
-		break;
-	case IEEE80211_VHT_CHANWIDTH_160MHZ:
-		vht_chandef.width = NL80211_CHAN_WIDTH_160;
-		break;
-	case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
-		vht_chandef.width = NL80211_CHAN_WIDTH_80P80;
-		vht_chandef.center_freq2 =
-			ieee80211_channel_to_frequency(
-				vht_oper->center_freq_seg2_idx,
-				channel->band);
-		break;
-	default:
+	vht_chandef = *chandef;
+	if (!ieee80211_chandef_vht_oper(vht_oper, &vht_chandef)) {
 		if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT))
 			sdata_info(sdata,
-				   "AP VHT operation IE has invalid channel width (%d), disable VHT\n",
-				   vht_oper->chan_width);
+				   "AP VHT information is invalid, disable VHT\n");
 		ret = IEEE80211_STA_DISABLE_VHT;
 		goto out;
 	}