package/kernel/mac80211/patches/subsys/376-mac80211-add-rate-control-support-for-encap-offload.patch

   1 From: Ryder Lee <ryder.lee@mediatek.com>
   2 Date: Fri, 28 May 2021 14:05:43 +0800
   3 Subject: [PATCH] mac80211: add rate control support for encap offload
   4
   5 The software rate control cannot deal with encap offload, so fix it.
   6
   7 Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
   8 ---
   9
  10 --- a/net/mac80211/ieee80211_i.h
  11 +++ b/net/mac80211/ieee80211_i.h
  12 @@ -2024,6 +2024,15 @@ static inline void ieee80211_tx_skb(stru
  13         ieee80211_tx_skb_tid(sdata, skb, 7);
  14  }
  15
  16 +static inline bool ieee80211_is_tx_data(struct sk_buff *skb)
  17 +{
  18 +       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
  19 +       struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
  20 +
  21 +       return info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP ||
  22 +              ieee80211_is_data(hdr->frame_control);
  23 +}
  24 +
  25  u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
  26                                struct ieee802_11_elems *elems,
  27                                u64 filter, u32 crc, u8 *transmitter_bssid,
  28 --- a/net/mac80211/rate.c
  29 +++ b/net/mac80211/rate.c
  30 @@ -297,15 +297,11 @@ void ieee80211_check_rate_mask(struct ie
  31  static bool rc_no_data_or_no_ack_use_min(struct ieee80211_tx_rate_control *txrc)
  32  {
  33         struct sk_buff *skb = txrc->skb;
  34 -       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
  35         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
  36 -       __le16 fc;
  37 -
  38 -       fc = hdr->frame_control;
  39
  40         return (info->flags & (IEEE80211_TX_CTL_NO_ACK |
  41                                IEEE80211_TX_CTL_USE_MINRATE)) ||
  42 -               !ieee80211_is_data(fc);
  43 +               !ieee80211_is_tx_data(skb);
  44  }
  45
  46  static void rc_send_low_basicrate(struct ieee80211_tx_rate *rate,
  47 @@ -870,7 +866,6 @@ void ieee80211_get_tx_rates(struct ieee8
  48                             int max_rates)
  49  {
  50         struct ieee80211_sub_if_data *sdata;
  51 -       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
  52         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
  53         struct ieee80211_supported_band *sband;
  54
  55 @@ -882,7 +877,7 @@ void ieee80211_get_tx_rates(struct ieee8
  56         sdata = vif_to_sdata(vif);
  57         sband = sdata->local->hw.wiphy->bands[info->band];
  58
  59 -       if (ieee80211_is_data(hdr->frame_control))
  60 +       if (ieee80211_is_tx_data(skb))
  61                 rate_control_apply_mask(sdata, sta, sband, dest, max_rates);
  62
  63         if (dest[0].idx < 0)
  64 --- a/net/mac80211/tx.c
  65 +++ b/net/mac80211/tx.c
  66 @@ -679,6 +679,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee8021
  67         u32 len;
  68         struct ieee80211_tx_rate_control txrc;
  69         struct ieee80211_sta_rates *ratetbl = NULL;
  70 +       bool encap = info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP;
  71         bool assoc = false;
  72
  73         memset(&txrc, 0, sizeof(txrc));
  74 @@ -720,7 +721,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee8021
  75          * just wants a probe response.
  76          */
  77         if (tx->sdata->vif.bss_conf.use_short_preamble &&
  78 -           (ieee80211_is_data(hdr->frame_control) ||
  79 +           (ieee80211_is_tx_data(tx->skb) ||
  80              (tx->sta && test_sta_flag(tx->sta, WLAN_STA_SHORT_PREAMBLE))))
  81                 txrc.short_preamble = true;
  82
  83 @@ -742,7 +743,8 @@ ieee80211_tx_h_rate_ctrl(struct ieee8021
  84                  "%s: Dropped data frame as no usable bitrate found while "
  85                  "scanning and associated. Target station: "
  86                  "%pM on %d GHz band\n",
  87 -                tx->sdata->name, hdr->addr1,
  88 +                tx->sdata->name,
  89 +                encap ? ((struct ethhdr *)hdr)->h_dest : hdr->addr1,
  90                  info->band ? 5 : 2))
  91                 return TX_DROP;
  92
  93 @@ -776,7 +778,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee8021
  94
  95         if (txrc.reported_rate.idx < 0) {
  96                 txrc.reported_rate = tx->rate;
  97 -               if (tx->sta && ieee80211_is_data(hdr->frame_control))
  98 +               if (tx->sta && ieee80211_is_tx_data(tx->skb))
  99                         tx->sta->tx_stats.last_rate = txrc.reported_rate;
 100         } else if (tx->sta)
 101                 tx->sta->tx_stats.last_rate = txrc.reported_rate;
 102 @@ -3660,8 +3662,16 @@ begin:
 103         else
 104                 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
 105
 106 -       if (info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP)
 107 +       if (info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) {
 108 +               if (!ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
 109 +                       r = ieee80211_tx_h_rate_ctrl(&tx);
 110 +                       if (r != TX_CONTINUE) {
 111 +                               ieee80211_free_txskb(&local->hw, skb);
 112 +                               goto begin;
 113 +                       }
 114 +               }
 115                 goto encap_out;
 116 +       }
 117
 118         if (info->control.flags & IEEE80211_TX_CTRL_FAST_XMIT) {
 119                 struct sta_info *sta = container_of(txq->sta, struct sta_info,