mwifiex: add 802.11AC support

For STA mode, collect VHT realated IEs from the Beacons or Probe
Responses and append similar VHT related IEs to association
requests.

For AP mode, get VHT related capability information and share it
with cfg80211 at the time of wiphy register. This information is
further used by cfg80211 and hostapd to start an AP with 802.11AC
support.

Currently only 8897 supports 802.11AC.

Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Frank Huang <frankh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
index e275aec5a17a..db4d5ae3ff96 100644
--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -1250,6 +1250,23 @@ int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
                                         sizeof(struct ieee_types_header) -
                                         bss_entry->beacon_buf);
                         break;
+                case WLAN_EID_VHT_CAPABILITY:
+                        bss_entry->disable_11ac = false;
+                        bss_entry->bcn_vht_cap =
+                                (void *)(current_ptr +
+                                         sizeof(struct ieee_types_header));
+                        bss_entry->vht_cap_offset =
+                                        (u16)((u8 *)bss_entry->bcn_vht_cap -
+                                              bss_entry->beacon_buf);
+                        break;
+                case WLAN_EID_VHT_OPERATION:
+                        bss_entry->bcn_vht_oper =
+                                (void *)(current_ptr +
+                                         sizeof(struct ieee_types_header));
+                        bss_entry->vht_info_offset =
+                                        (u16)((u8 *)bss_entry->bcn_vht_oper -
+                                              bss_entry->beacon_buf);
+                        break;
                 case WLAN_EID_BSS_COEX_2040:
                         bss_entry->bcn_bss_co_2040 = current_ptr +
                                 sizeof(struct ieee_types_header);
@@ -1264,6 +1281,14 @@ int mwifiex_update_bss_desc_with_ie(struct mwifiex_adapter *adapter,
                                         sizeof(struct ieee_types_header) -
                                         bss_entry->beacon_buf);
                         break;
+                case WLAN_EID_OPMODE_NOTIF:
+                        bss_entry->oper_mode =
+                                (void *)(current_ptr +
+                                         sizeof(struct ieee_types_header));
+                        bss_entry->oper_mode_offset =
+                                        (u16)((u8 *)bss_entry->oper_mode -
+                                              bss_entry->beacon_buf);
+                        break;
                 default:
                         break;
                 }
@@ -1494,6 +1519,17 @@ static int mwifiex_update_curr_bss_params(struct mwifiex_private *priv,
         priv->curr_bss_params.bss_descriptor.ext_cap_offset = 0;
         priv->curr_bss_params.bss_descriptor.beacon_buf = NULL;
         priv->curr_bss_params.bss_descriptor.beacon_buf_size = 0;
+        priv->curr_bss_params.bss_descriptor.bcn_vht_cap = NULL;
+        priv->curr_bss_params.bss_descriptor.vht_cap_offset = 0;
+        priv->curr_bss_params.bss_descriptor.bcn_vht_oper = NULL;
+        priv->curr_bss_params.bss_descriptor.vht_info_offset = 0;
+        priv->curr_bss_params.bss_descriptor.oper_mode = NULL;
+        priv->curr_bss_params.bss_descriptor.oper_mode_offset = 0;
+
+        /* Disable 11ac by default. Enable it only where there
+         * exist VHT_CAP IE in AP beacon
+         */
+        priv->curr_bss_params.bss_descriptor.disable_11ac = true;
 
         /* Make a copy of current BSSID descriptor */
         memcpy(&priv->curr_bss_params.bss_descriptor, bss_desc,
@@ -2028,6 +2064,14 @@ mwifiex_save_curr_bcn(struct mwifiex_private *priv)
                         (curr_bss->beacon_buf +
                          curr_bss->ht_info_offset);
 
+        if (curr_bss->bcn_vht_cap)
+                curr_bss->bcn_ht_cap = (void *)(curr_bss->beacon_buf +
+                                                curr_bss->vht_cap_offset);
+
+        if (curr_bss->bcn_vht_oper)
+                curr_bss->bcn_ht_oper = (void *)(curr_bss->beacon_buf +
+                                                 curr_bss->vht_info_offset);
+
         if (curr_bss->bcn_bss_co_2040)
                 curr_bss->bcn_bss_co_2040 =
                         (curr_bss->beacon_buf + curr_bss->bss_co_2040_offset);
@@ -2035,6 +2079,10 @@ mwifiex_save_curr_bcn(struct mwifiex_private *priv)
         if (curr_bss->bcn_ext_cap)
                 curr_bss->bcn_ext_cap = curr_bss->beacon_buf +
                         curr_bss->ext_cap_offset;
+
+        if (curr_bss->oper_mode)
+                curr_bss->oper_mode = (void *)(curr_bss->beacon_buf +
+                                               curr_bss->oper_mode_offset);
 }
 
 /*