UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

net: mediatek: do not set the QID field in the TX DMA descriptors 

The QID field gets set to the mac id. This made the DMA linked list queue
the traffic of each MAC on a different internal queue. However during long
term testing we found that this will cause traffic stalls as the multi
queue setup requires a more complete initialisation which is not part of
the upstream driver yet.

This patch removes the code setting the QID field, resulting in all
traffic ending up in queue 0 which works without any special setup.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Crispin 2016-04-08 00:54:11 +02:00 committed by David S. Miller
parent 7c78b4ad9b
commit 369f04531f
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/ethernet/mediatek/mtk_eth_soc.c
View File

@ -603,8 +603,7 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev,
WRITE_ONCE(txd->txd1, mapped_addr);
WRITE_ONCE(txd->txd3, (TX_DMA_SWC |
TX_DMA_PLEN0(frag_map_size) |
last_frag * TX_DMA_LS0) |
mac->id);
last_frag * TX_DMA_LS0));
WRITE_ONCE(txd->txd4, 0);
tx_buf->skb = (struct sk_buff *)MTK_DMA_DUMMY_DESC;