mac80211: minstrel_ht: Increase the range of handled rate indexes

Since 5935839ad735 ("mac80211: improve minstrel_ht rate sorting by
throughput & probability"), the rate indexes are manipulated via u8's
and hence allow for a maximum of 256 mcs_group entries in
minstrel_mcs_groups.

ATM, minstrel_ht advertizes support up to 3HTSS@40MHz, consuming:
8(MCS_GROUP_RATES) * (3(SS)*2(GI)*2(BW)+1(CCK)), i.e. 104 entries.

Support for 3VHTSS@80MHz will require:
10(MCS_GROUP_RATES) * (3(SS)*2(GI)*2(BW)+1(CCK)) +
10(MCS_GROUP_RATES) * (3(SS)*2(GI)*3(BW)), i.e. 130 + 180 entries.

This change moves from u8s to u16s where necessary.

Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
Cc: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/mac80211/rc80211_minstrel_ht.h b/net/mac80211/rc80211_minstrel_ht.h
index 01570e0e014b..8b54e894b197 100644
--- a/net/mac80211/rc80211_minstrel_ht.h
+++ b/net/mac80211/rc80211_minstrel_ht.h
@@ -34,8 +34,8 @@ struct minstrel_mcs_group_data {
         u8 supported;
 
         /* sorted rate set within a MCS group*/
-        u8 max_group_tp_rate[MAX_THR_RATES];
-        u8 max_group_prob_rate;
+        u16 max_group_tp_rate[MAX_THR_RATES];
+        u16 max_group_prob_rate;
 
         /* MCS rate statistics */
         struct minstrel_rate_stats rates[MCS_GROUP_RATES];
@@ -52,8 +52,8 @@ struct minstrel_ht_sta {
         unsigned int avg_ampdu_len;
 
         /* overall sorted rate set */
-        u8 max_tp_rate[MAX_THR_RATES];
-        u8 max_prob_rate;
+        u16 max_tp_rate[MAX_THR_RATES];
+        u16 max_prob_rate;
 
         /* time of last status update */
         unsigned long stats_update;