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Re: [PATCH v9 RESEND] wifi: mt76: mt7915: add wds support when wed is enabled

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在 2025/3/10 8:33, Ping-Ke Shih 写道:
Shengyu Qu <wiagn233@xxxxxxxxxxx> wrote:
@@ -1280,6 +1292,34 @@ static void mt7915_sta_set_4addr(struct ieee80211_hw *hw,
         if (!msta->wcid.sta)
                 return;

+       if (mtk_wed_device_active(&dev->mt76.mmio.wed) &&
+           !is_mt7915(&dev->mt76) &&
+           (msta->wcid.idx < min || msta->wcid.idx > max - 1)) {
+               pre_sta = kmemdup(sta, sizeof(*sta) + sizeof(*msta), GFP_KERNEL | __GFP_ZERO);

Need to check if pre_sta != NULL before using.
Thanks, will fix.


+               pre_msta = (struct mt7915_sta *)pre_sta->drv_priv;
+
+               flags = test_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags) ?
+                       MT76_WED_WDS_ACTIVE : MT76_WED_ACTIVE;
+
+               tmp_idx = __mt76_wcid_alloc(dev->mt76.wcid_mask, MT7915_WTBL_STA, flags);
+               if (tmp_idx == -1)

At other places, it checks this by 'idx < 0'.
Will fix.


+                       goto error;
+               pre_msta->wcid.idx = (u16)tmp_idx;
+               mt7915_mac_sta_add(&dev->mt76, vif, pre_sta);
+               rcu_assign_pointer(dev->mt76.wcid[tmp_idx], &msta->wcid);
+
+               tmp_idx = msta->wcid.idx;
+               msta->wcid.idx = pre_msta->wcid.idx;
+               pre_msta->wcid.idx = (u16)tmp_idx;
+               rcu_assign_pointer(dev->mt76.wcid[tmp_idx], NULL);
+
+               synchronize_rcu();
+               mt7915_mac_sta_remove(&dev->mt76, vif, pre_sta);
+
+error:
+               kfree(pre_sta);
+       }
+
         mt76_connac_mcu_wtbl_update_hdr_trans(&dev->mt76, vif, sta);
  }


[...]

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 9d790f234e82..32c5aa1a361e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -2385,10 +2385,20 @@ int mt7915_mcu_init_firmware(struct mt7915_dev *dev)

         mt76_connac_mcu_del_wtbl_all(&dev->mt76);

-       if ((mtk_wed_device_active(&dev->mt76.mmio.wed) &&
-            is_mt7915(&dev->mt76)) ||
-           !mtk_wed_get_rx_capa(&dev->mt76.mmio.wed))
-               mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(CAPABILITY), 0, 0, 0);
+#ifdef CONFIG_NET_MEDIATEK_SOC_WED

if (IS_ENABLED(CONFIG_NET_MEDIATEK_SOC_WED) ... ?
I did a search in code about this, seems current MT76 code is using a
mix of IS_ENABLED and ifdef. And this file already have a ifdef
implementation. I prefer keep it as is and use another patch to convert
the whole mt76 driver.


+       if (mtk_wed_device_active(&dev->mt76.mmio.wed)) {
+               if (is_mt7915(&dev->mt76) ||
+                   !mtk_wed_get_rx_capa(&dev->mt76.mmio.wed))
+                       ret = mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(CAPABILITY),
+                                               0, 0, 0);
+               else
+                       ret = mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(SET),
+                                               MCU_WA_PARAM_WED_VERSION,
+                                               dev->mt76.mmio.wed.rev_id, 0);
+               if (ret)
+                       return ret;
+       }
+#endif

         ret = mt7915_mcu_set_mwds(dev, 1);
         if (ret)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
index 49476a4182fd..c3dd0cb4a5d3 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
@@ -278,6 +278,7 @@ enum {
         MCU_WA_PARAM_PDMA_RX = 0x04,
         MCU_WA_PARAM_CPU_UTIL = 0x0b,
         MCU_WA_PARAM_RED = 0x0e,
+       MCU_WA_PARAM_WED_VERSION = 0x32,
         MCU_WA_PARAM_RED_SETTING = 0x40,
  };

diff --git a/drivers/net/wireless/mediatek/mt76/util.c b/drivers/net/wireless/mediatek/mt76/util.c
index 95b3dc96e4c4..7fac9c79ebdf 100644
--- a/drivers/net/wireless/mediatek/mt76/util.c
+++ b/drivers/net/wireless/mediatek/mt76/util.c
@@ -42,9 +42,11 @@ bool ____mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
  }
  EXPORT_SYMBOL_GPL(____mt76_poll_msec);

-int mt76_wcid_alloc(u32 *mask, int size)
+int __mt76_wcid_alloc(u32 *mask, int size, u8 flag)
  {
         int i, idx = 0, cur;
+       int min = MT76_WED_WDS_MIN;
+       int max = MT76_WED_WDS_MAX;

In reverse X'mas tree order?
Will fix.



         for (i = 0; i < DIV_ROUND_UP(size, 32); i++) {
                 idx = ffs(~mask[i]);
@@ -53,16 +55,45 @@ int mt76_wcid_alloc(u32 *mask, int size)

                 idx--;
                 cur = i * 32 + idx;
-               if (cur >= size)
+
+               switch (flag) {
+               case MT76_WED_ACTIVE:
+                       if (cur >= min && cur < max)
+                               continue;
+
+                       if (cur >= size) {
+                               u32 end = max - min - 1;
+
+                               i = min / 32;
+                               idx = ffs(~mask[i] & GENMASK(end, 0));
+                               if (!idx)
+                                       goto error;
+                               idx--;
+                               cur = min + idx;
+                       }
+
                         break;
+               case MT76_WED_WDS_ACTIVE:
+                       if (cur < min)
+                               continue;
+                       if (cur >= max)
+                               goto error;
+
+                       break;
+               default:
+                       if (cur >= size)
+                               goto error;
+                       break;
+               }

                 mask[i] |= BIT(idx);
                 return cur;
         }

+error:
         return -1;
  }
-EXPORT_SYMBOL_GPL(mt76_wcid_alloc);
+EXPORT_SYMBOL_GPL(__mt76_wcid_alloc);

  int mt76_get_min_avg_rssi(struct mt76_dev *dev, u8 phy_idx)
  {
diff --git a/drivers/net/wireless/mediatek/mt76/util.h b/drivers/net/wireless/mediatek/mt76/util.h
index 260965dde94c..99b7263c0a20 100644
--- a/drivers/net/wireless/mediatek/mt76/util.h
+++ b/drivers/net/wireless/mediatek/mt76/util.h
@@ -27,7 +27,12 @@ enum {
  #define MT76_INCR(_var, _size) \
         (_var = (((_var) + 1) % (_size)))

-int mt76_wcid_alloc(u32 *mask, int size);
+int __mt76_wcid_alloc(u32 *mask, int size, u8 flags);
+
+static inline int mt76_wcid_alloc(u32 *mask, int size)
+{
+       return __mt76_wcid_alloc(mask, size, 0);

return __mt76_wcid_alloc(mask, size, MT76_WED_DEFAULT); ?
Will fix.


+}

  static inline void
  mt76_wcid_mask_set(u32 *mask, int idx)
--
2.48.1



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