package/kernel/mac80211/patches/rtl/001-14-v6.9-wifi-rtl8xxxu-support-multiple-interfaces-in-add-rem.patch

   1 From eef55f1545c92c7181d5083453dee1296298ad3e Mon Sep 17 00:00:00 2001
   2 From: Martin Kaistra <martin.kaistra@linutronix.de>
   3 Date: Fri, 22 Dec 2023 11:14:35 +0100
   4 Subject: [PATCH 14/21] wifi: rtl8xxxu: support multiple interfaces in
   5  {add,remove}_interface()
   6
   7 Add a custom struct to store in vif->drv_priv with a reference to
   8 port_num and fill it when a new interface is added. Choose a free
   9 port_num for the newly added interface.
  10
  11 As we only want to support AP mode/sending beacons on port 0, only change
  12 the beacon settings if a new interface is actually assigned to port 0.
  13
  14 Call set_linktype() and set_mac() with the appropriate port_num.
  15
  16 Signed-off-by: Martin Kaistra <martin.kaistra@linutronix.de>
  17 Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
  18 Signed-off-by: Kalle Valo <kvalo@kernel.org>
  19 Link: https://msgid.link/20231222101442.626837-15-martin.kaistra@linutronix.de
  20 ---
  21  .../net/wireless/realtek/rtl8xxxu/rtl8xxxu.h  |  4 ++
  22  .../wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 52 +++++++++++--------
  23  2 files changed, 34 insertions(+), 22 deletions(-)
  24
  25 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
  26 +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
  27 @@ -1921,6 +1921,10 @@ struct rtl8xxxu_sta_info {
  28         u8 macid;
  29  };
  30
  31 +struct rtl8xxxu_vif {
  32 +       int port_num;
  33 +};
  34 +
  35  struct rtl8xxxu_rx_urb {
  36         struct urb urb;
  37         struct ieee80211_hw *hw;
  38 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
  39 +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
  40 @@ -6610,28 +6610,33 @@ error:
  41  static int rtl8xxxu_add_interface(struct ieee80211_hw *hw,
  42                                   struct ieee80211_vif *vif)
  43  {
  44 +       struct rtl8xxxu_vif *rtlvif = (struct rtl8xxxu_vif *)vif->drv_priv;
  45         struct rtl8xxxu_priv *priv = hw->priv;
  46 -       int ret;
  47 +       int port_num;
  48         u8 val8;
  49
  50 -       if (!priv->vif) {
  51 -               priv->vif = vif;
  52 -               priv->vifs[0] = vif;
  53 -       } else {
  54 +       if (!priv->vifs[0])
  55 +               port_num = 0;
  56 +       else if (!priv->vifs[1])
  57 +               port_num = 1;
  58 +       else
  59                 return -EOPNOTSUPP;
  60 -       }
  61
  62         switch (vif->type) {
  63         case NL80211_IFTYPE_STATION:
  64 -               rtl8xxxu_stop_tx_beacon(priv);
  65 +               if (port_num == 0) {
  66 +                       rtl8xxxu_stop_tx_beacon(priv);
  67
  68 -               val8 = rtl8xxxu_read8(priv, REG_BEACON_CTRL);
  69 -               val8 |= BEACON_ATIM | BEACON_FUNCTION_ENABLE |
  70 -                       BEACON_DISABLE_TSF_UPDATE;
  71 -               rtl8xxxu_write8(priv, REG_BEACON_CTRL, val8);
  72 -               ret = 0;
  73 +                       val8 = rtl8xxxu_read8(priv, REG_BEACON_CTRL);
  74 +                       val8 |= BEACON_ATIM | BEACON_FUNCTION_ENABLE |
  75 +                               BEACON_DISABLE_TSF_UPDATE;
  76 +                       rtl8xxxu_write8(priv, REG_BEACON_CTRL, val8);
  77 +               }
  78                 break;
  79         case NL80211_IFTYPE_AP:
  80 +               if (port_num == 1)
  81 +                       return -EOPNOTSUPP;
  82 +
  83                 rtl8xxxu_write8(priv, REG_BEACON_CTRL,
  84                                 BEACON_DISABLE_TSF_UPDATE | BEACON_CTRL_MBSSID);
  85                 rtl8xxxu_write8(priv, REG_ATIMWND, 0x0c); /* 12ms */
  86 @@ -6648,31 +6653,32 @@ static int rtl8xxxu_add_interface(struct
  87                 val8 = rtl8xxxu_read8(priv, REG_CCK_CHECK);
  88                 val8 &= ~BIT_BCN_PORT_SEL;
  89                 rtl8xxxu_write8(priv, REG_CCK_CHECK, val8);
  90 -
  91 -               ret = 0;
  92                 break;
  93         default:
  94 -               ret = -EOPNOTSUPP;
  95 +               return -EOPNOTSUPP;
  96         }
  97
  98 -       rtl8xxxu_set_linktype(priv, vif->type, 0);
  99 +       priv->vifs[port_num] = vif;
 100 +       priv->vif = vif;
 101 +       rtlvif->port_num = port_num;
 102 +
 103 +       rtl8xxxu_set_linktype(priv, vif->type, port_num);
 104         ether_addr_copy(priv->mac_addr, vif->addr);
 105 -       rtl8xxxu_set_mac(priv, 0);
 106 +       rtl8xxxu_set_mac(priv, port_num);
 107
 108 -       return ret;
 109 +       return 0;
 110  }
 111
 112  static void rtl8xxxu_remove_interface(struct ieee80211_hw *hw,
 113                                       struct ieee80211_vif *vif)
 114  {
 115 +       struct rtl8xxxu_vif *rtlvif = (struct rtl8xxxu_vif *)vif->drv_priv;
 116         struct rtl8xxxu_priv *priv = hw->priv;
 117
 118         dev_dbg(&priv->udev->dev, "%s\n", __func__);
 119
 120 -       if (priv->vif) {
 121 -               priv->vif = NULL;
 122 -               priv->vifs[0] = NULL;
 123 -       }
 124 +       priv->vif = NULL;
 125 +       priv->vifs[rtlvif->port_num] = NULL;
 126  }
 127
 128  static int rtl8xxxu_config(struct ieee80211_hw *hw, u32 changed)
 129 @@ -7661,6 +7667,8 @@ static int rtl8xxxu_probe(struct usb_int
 130         if (ret)
 131                 goto err_set_intfdata;
 132
 133 +       hw->vif_data_size = sizeof(struct rtl8xxxu_vif);
 134 +
 135         hw->wiphy->max_scan_ssids = 1;
 136         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
 137         if (priv->fops->max_macid_num)