From: Jes Sorensen Date: Mon, 29 Feb 2016 22:05:27 +0000 (-0500) Subject: rtl8xxxu: Handle 40 byte TX descriptors for rtl8723bu X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=179e1742569620aed495f5d106d019b2dd6057d1;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.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 Signed-off-by: Kalle Valo --- diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c index 241d68d161aa..19bc5d7556bc 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c @@ -6787,7 +6787,12 @@ static u32 rtl8xxxu_queue_select(struct ieee80211_hw *hw, struct sk_buff *skb) return queue; } -static void rtl8xxxu_calc_tx_desc_csum(struct rtl8xxxu_tx_desc *tx_desc) +/* + * Despite newer chips 8723b/8812/8821 having a larger TX descriptor + * format. The descriptor checksum is still only calculated over the + * initial 32 bytes of the descriptor! + */ +static void rtl8xxxu_calc_tx_desc_csum(struct rtl8723au_tx_desc *tx_desc) { __le16 *ptr = (__le16 *)tx_desc; u16 csum = 0; @@ -6799,7 +6804,7 @@ static void rtl8xxxu_calc_tx_desc_csum(struct rtl8xxxu_tx_desc *tx_desc) */ tx_desc->csum = cpu_to_le16(0); - for (i = 0; i < (sizeof(struct rtl8xxxu_tx_desc) / sizeof(u16)); i++) + for (i = 0; i < (sizeof(struct rtl8723au_tx_desc) / sizeof(u16)); i++) csum = csum ^ le16_to_cpu(ptr[i]); tx_desc->csum |= cpu_to_le16(csum); @@ -6868,13 +6873,15 @@ static void rtl8xxxu_tx_complete(struct urb *urb) struct sk_buff *skb = (struct sk_buff *)urb->context; struct ieee80211_tx_info *tx_info; struct ieee80211_hw *hw; + struct rtl8xxxu_priv *priv; struct rtl8xxxu_tx_urb *tx_urb = container_of(urb, struct rtl8xxxu_tx_urb, urb); tx_info = IEEE80211_SKB_CB(skb); hw = tx_info->rate_driver_data[0]; + priv = hw->priv; - skb_pull(skb, sizeof(struct rtl8xxxu_tx_desc)); + skb_pull(skb, priv->fops->tx_desc_size); ieee80211_tx_info_clear_status(tx_info); tx_info->status.rates[0].idx = -1; @@ -6885,7 +6892,7 @@ static void rtl8xxxu_tx_complete(struct urb *urb) ieee80211_tx_status_irqsafe(hw, skb); - rtl8xxxu_free_tx_urb(hw->priv, tx_urb); + rtl8xxxu_free_tx_urb(priv, tx_urb); } static void rtl8xxxu_dump_action(struct device *dev, @@ -6935,7 +6942,7 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw, struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); struct ieee80211_rate *tx_rate = ieee80211_get_tx_rate(hw, tx_info); struct rtl8xxxu_priv *priv = hw->priv; - struct rtl8xxxu_tx_desc *tx_desc; + struct rtl8723au_tx_desc *tx_desc; struct rtl8xxxu_tx_urb *tx_urb; struct ieee80211_sta *sta = NULL; struct ieee80211_vif *vif = tx_info->control.vif; @@ -6944,16 +6951,17 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw, u16 pktlen = skb->len; u16 seq_number; u16 rate_flag = tx_info->control.rates[0].flags; + int tx_desc_size = priv->fops->tx_desc_size; int ret; - if (skb_headroom(skb) < sizeof(struct rtl8xxxu_tx_desc)) { + if (skb_headroom(skb) < tx_desc_size) { dev_warn(dev, "%s: Not enough headroom (%i) for tx descriptor\n", __func__, skb_headroom(skb)); goto error; } - if (unlikely(skb->len > (65535 - sizeof(struct rtl8xxxu_tx_desc)))) { + if (unlikely(skb->len > (65535 - tx_desc_size))) { dev_warn(dev, "%s: Trying to send over-sized skb (%i)\n", __func__, skb->len); goto error; @@ -6977,12 +6985,11 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw, if (control && control->sta) sta = control->sta; - tx_desc = (struct rtl8xxxu_tx_desc *) - skb_push(skb, sizeof(struct rtl8xxxu_tx_desc)); + tx_desc = (struct rtl8723au_tx_desc *)skb_push(skb, tx_desc_size); - memset(tx_desc, 0, sizeof(struct rtl8xxxu_tx_desc)); + memset(tx_desc, 0, tx_desc_size); tx_desc->pkt_size = cpu_to_le16(pktlen); - tx_desc->pkt_offset = sizeof(struct rtl8xxxu_tx_desc); + tx_desc->pkt_offset = tx_desc_size; tx_desc->txdw0 = TXDESC_OWN | TXDESC_FIRST_SEGMENT | TXDESC_LAST_SEGMENT; @@ -8077,7 +8084,7 @@ static int rtl8xxxu_probe(struct usb_interface *interface, SET_IEEE80211_DEV(priv->hw, &interface->dev); SET_IEEE80211_PERM_ADDR(hw, priv->mac_addr); - hw->extra_tx_headroom = sizeof(struct rtl8xxxu_tx_desc); + hw->extra_tx_headroom = priv->fops->tx_desc_size; ieee80211_hw_set(hw, SIGNAL_DBM); /* * The firmware handles rate control @@ -8134,6 +8141,7 @@ static struct rtl8xxxu_fileops rtl8723au_fops = { .writeN_block_size = 1024, .mbox_ext_reg = REG_HMBOX_EXT_0, .mbox_ext_width = 2, + .tx_desc_size = sizeof(struct rtl8723au_tx_desc), .adda_1t_init = 0x0b1b25a0, .adda_1t_path_on = 0x0bdb25a0, .adda_2t_path_on_a = 0x04db25a4, @@ -8157,6 +8165,7 @@ static struct rtl8xxxu_fileops rtl8723bu_fops = { .writeN_block_size = 1024, .mbox_ext_reg = REG_HMBOX_EXT0_8723B, .mbox_ext_width = 4, + .tx_desc_size = sizeof(struct rtl8723bu_tx_desc), .has_s0s1 = 1, .adda_1t_init = 0x01c00014, .adda_1t_path_on = 0x01c00014, @@ -8179,6 +8188,7 @@ static struct rtl8xxxu_fileops rtl8192cu_fops = { .writeN_block_size = 128, .mbox_ext_reg = REG_HMBOX_EXT_0, .mbox_ext_width = 2, + .tx_desc_size = sizeof(struct rtl8723au_tx_desc), .adda_1t_init = 0x0b1b25a0, .adda_1t_path_on = 0x0bdb25a0, .adda_2t_path_on_a = 0x04db25a4, @@ -8200,6 +8210,7 @@ static struct rtl8xxxu_fileops rtl8192eu_fops = { .writeN_block_size = 128, .mbox_ext_reg = REG_HMBOX_EXT0_8723B, .mbox_ext_width = 4, + .tx_desc_size = sizeof(struct rtl8723au_tx_desc), .has_s0s1 = 1, .adda_1t_init = 0x0fc01616, .adda_1t_path_on = 0x0fc01616, diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h index f06b88b97bee..d53912a8326d 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h @@ -332,7 +332,7 @@ struct rtl8723bu_rx_desc { __le32 tsfl; }; -struct rtl8xxxu_tx_desc { +struct rtl8723au_tx_desc { __le16 pkt_size; u8 pkt_offset; u8 txdw0; @@ -1190,6 +1190,7 @@ struct rtl8xxxu_fileops { int writeN_block_size; u16 mbox_ext_reg; char mbox_ext_width; + char tx_desc_size; char has_s0s1; u32 adda_1t_init; u32 adda_1t_path_on;