mirror of https://gitee.com/openkylin/linux.git
rtl8xxxu: Handle 40 byte TX descriptors for rtl8723bu
Note the descriptor checksum is still only calculated over the initial 32 bytes of the descriptor, ignoring the last 8 bytes of the descriptor. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
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80491a1f3c
commit
179e174256
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@ -6787,7 +6787,12 @@ static u32 rtl8xxxu_queue_select(struct ieee80211_hw *hw, struct sk_buff *skb)
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return queue;
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}
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static void rtl8xxxu_calc_tx_desc_csum(struct rtl8xxxu_tx_desc *tx_desc)
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/*
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* Despite newer chips 8723b/8812/8821 having a larger TX descriptor
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* format. The descriptor checksum is still only calculated over the
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* initial 32 bytes of the descriptor!
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*/
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static void rtl8xxxu_calc_tx_desc_csum(struct rtl8723au_tx_desc *tx_desc)
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{
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__le16 *ptr = (__le16 *)tx_desc;
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u16 csum = 0;
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@ -6799,7 +6804,7 @@ static void rtl8xxxu_calc_tx_desc_csum(struct rtl8xxxu_tx_desc *tx_desc)
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*/
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tx_desc->csum = cpu_to_le16(0);
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for (i = 0; i < (sizeof(struct rtl8xxxu_tx_desc) / sizeof(u16)); i++)
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for (i = 0; i < (sizeof(struct rtl8723au_tx_desc) / sizeof(u16)); i++)
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csum = csum ^ le16_to_cpu(ptr[i]);
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tx_desc->csum |= cpu_to_le16(csum);
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@ -6868,13 +6873,15 @@ static void rtl8xxxu_tx_complete(struct urb *urb)
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struct sk_buff *skb = (struct sk_buff *)urb->context;
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struct ieee80211_tx_info *tx_info;
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struct ieee80211_hw *hw;
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struct rtl8xxxu_priv *priv;
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struct rtl8xxxu_tx_urb *tx_urb =
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container_of(urb, struct rtl8xxxu_tx_urb, urb);
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tx_info = IEEE80211_SKB_CB(skb);
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hw = tx_info->rate_driver_data[0];
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priv = hw->priv;
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skb_pull(skb, sizeof(struct rtl8xxxu_tx_desc));
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skb_pull(skb, priv->fops->tx_desc_size);
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ieee80211_tx_info_clear_status(tx_info);
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tx_info->status.rates[0].idx = -1;
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@ -6885,7 +6892,7 @@ static void rtl8xxxu_tx_complete(struct urb *urb)
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ieee80211_tx_status_irqsafe(hw, skb);
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rtl8xxxu_free_tx_urb(hw->priv, tx_urb);
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rtl8xxxu_free_tx_urb(priv, tx_urb);
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}
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static void rtl8xxxu_dump_action(struct device *dev,
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@ -6935,7 +6942,7 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw,
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struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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struct ieee80211_rate *tx_rate = ieee80211_get_tx_rate(hw, tx_info);
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struct rtl8xxxu_priv *priv = hw->priv;
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struct rtl8xxxu_tx_desc *tx_desc;
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struct rtl8723au_tx_desc *tx_desc;
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struct rtl8xxxu_tx_urb *tx_urb;
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struct ieee80211_sta *sta = NULL;
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struct ieee80211_vif *vif = tx_info->control.vif;
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@ -6944,16 +6951,17 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw,
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u16 pktlen = skb->len;
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u16 seq_number;
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u16 rate_flag = tx_info->control.rates[0].flags;
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int tx_desc_size = priv->fops->tx_desc_size;
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int ret;
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if (skb_headroom(skb) < sizeof(struct rtl8xxxu_tx_desc)) {
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if (skb_headroom(skb) < tx_desc_size) {
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dev_warn(dev,
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"%s: Not enough headroom (%i) for tx descriptor\n",
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__func__, skb_headroom(skb));
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goto error;
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}
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if (unlikely(skb->len > (65535 - sizeof(struct rtl8xxxu_tx_desc)))) {
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if (unlikely(skb->len > (65535 - tx_desc_size))) {
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dev_warn(dev, "%s: Trying to send over-sized skb (%i)\n",
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__func__, skb->len);
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goto error;
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@ -6977,12 +6985,11 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw,
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if (control && control->sta)
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sta = control->sta;
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tx_desc = (struct rtl8xxxu_tx_desc *)
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skb_push(skb, sizeof(struct rtl8xxxu_tx_desc));
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tx_desc = (struct rtl8723au_tx_desc *)skb_push(skb, tx_desc_size);
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memset(tx_desc, 0, sizeof(struct rtl8xxxu_tx_desc));
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memset(tx_desc, 0, tx_desc_size);
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tx_desc->pkt_size = cpu_to_le16(pktlen);
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tx_desc->pkt_offset = sizeof(struct rtl8xxxu_tx_desc);
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tx_desc->pkt_offset = tx_desc_size;
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tx_desc->txdw0 =
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TXDESC_OWN | TXDESC_FIRST_SEGMENT | TXDESC_LAST_SEGMENT;
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@ -8077,7 +8084,7 @@ static int rtl8xxxu_probe(struct usb_interface *interface,
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SET_IEEE80211_DEV(priv->hw, &interface->dev);
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SET_IEEE80211_PERM_ADDR(hw, priv->mac_addr);
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hw->extra_tx_headroom = sizeof(struct rtl8xxxu_tx_desc);
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hw->extra_tx_headroom = priv->fops->tx_desc_size;
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ieee80211_hw_set(hw, SIGNAL_DBM);
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/*
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* The firmware handles rate control
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@ -8134,6 +8141,7 @@ static struct rtl8xxxu_fileops rtl8723au_fops = {
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.writeN_block_size = 1024,
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.mbox_ext_reg = REG_HMBOX_EXT_0,
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.mbox_ext_width = 2,
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.tx_desc_size = sizeof(struct rtl8723au_tx_desc),
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.adda_1t_init = 0x0b1b25a0,
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.adda_1t_path_on = 0x0bdb25a0,
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.adda_2t_path_on_a = 0x04db25a4,
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@ -8157,6 +8165,7 @@ static struct rtl8xxxu_fileops rtl8723bu_fops = {
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.writeN_block_size = 1024,
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.mbox_ext_reg = REG_HMBOX_EXT0_8723B,
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.mbox_ext_width = 4,
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.tx_desc_size = sizeof(struct rtl8723bu_tx_desc),
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.has_s0s1 = 1,
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.adda_1t_init = 0x01c00014,
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.adda_1t_path_on = 0x01c00014,
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@ -8179,6 +8188,7 @@ static struct rtl8xxxu_fileops rtl8192cu_fops = {
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.writeN_block_size = 128,
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.mbox_ext_reg = REG_HMBOX_EXT_0,
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.mbox_ext_width = 2,
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.tx_desc_size = sizeof(struct rtl8723au_tx_desc),
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.adda_1t_init = 0x0b1b25a0,
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.adda_1t_path_on = 0x0bdb25a0,
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.adda_2t_path_on_a = 0x04db25a4,
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@ -8200,6 +8210,7 @@ static struct rtl8xxxu_fileops rtl8192eu_fops = {
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.writeN_block_size = 128,
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.mbox_ext_reg = REG_HMBOX_EXT0_8723B,
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.mbox_ext_width = 4,
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.tx_desc_size = sizeof(struct rtl8723au_tx_desc),
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.has_s0s1 = 1,
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.adda_1t_init = 0x0fc01616,
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.adda_1t_path_on = 0x0fc01616,
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@ -332,7 +332,7 @@ struct rtl8723bu_rx_desc {
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__le32 tsfl;
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};
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struct rtl8xxxu_tx_desc {
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struct rtl8723au_tx_desc {
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__le16 pkt_size;
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u8 pkt_offset;
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u8 txdw0;
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@ -1190,6 +1190,7 @@ struct rtl8xxxu_fileops {
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int writeN_block_size;
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u16 mbox_ext_reg;
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char mbox_ext_width;
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char tx_desc_size;
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char has_s0s1;
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u32 adda_1t_init;
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u32 adda_1t_path_on;
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