Merge remote-tracking branch 'crypto/master'

[karo-tx-linux.git] / net / mac80211 / cfg.c

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 166a29fe6c35f63a5357a01ceeb140f19346f9bd..66d22de93c8df75e7d0b747bf71a45cb3b45f927 100644 (file)
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1131,6 +1131,34 @@ static int sta_apply_parameters(struct ieee80211_local *local,
                sta->sta.max_sp = params->max_sp;
        }
 
+       /* The sender might not have sent the last bit, consider it to be 0 */
+       if (params->ext_capab_len >= 8) {
+               u8 val = (params->ext_capab[7] &
+                         WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
+
+               /* we did get all the bits, take the MSB as well */
+               if (params->ext_capab_len >= 9) {
+                       u8 val_msb = params->ext_capab[8] &
+                               WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
+                       val_msb <<= 1;
+                       val |= val_msb;
+               }
+
+               switch (val) {
+               case 1:
+                       sta->sta.max_amsdu_subframes = 32;
+                       break;
+               case 2:
+                       sta->sta.max_amsdu_subframes = 16;
+                       break;
+               case 3:
+                       sta->sta.max_amsdu_subframes = 8;
+                       break;
+               default:
+                       sta->sta.max_amsdu_subframes = 0;
+               }
+       }
+
        /*
         * cfg80211 validates this (1-2007) and allows setting the AID
         * only when creating a new station entry
@@ -1160,6 +1188,7 @@ static int sta_apply_parameters(struct ieee80211_local *local,
                ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
                                                  params->ht_capa, sta);
 
+       /* VHT can override some HT caps such as the A-MSDU max length */
        if (params->vht_capa)
                ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
                                                    params->vht_capa, sta);