On 2018-02-13 23:53, Rosen Penev wrote:
> Based on Qualcomm driver. Improves iperf3 throughput by ~20mbps on transmit
> on Archer C7v4.
>
> Signed-off-by: Rosen Penev <ros...@gmail.com>
> ---
> .../drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c | 14
> +++++++-------
> 1 file changed, 7 insertions(+), 7 deletions(-)
>
> diff --git
> a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
> b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
> index 95682b7641..d32f220178 100644
> ---
> a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
> +++
> b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c
> @@ -797,11 +797,14 @@ static netdev_tx_t ag71xx_hard_start_xmit(struct
> sk_buff *skb,
> if (ag71xx_has_ar8216(ag))
> ag71xx_add_ar8216_header(ag, skb);
>
> - if (skb->len <= 4) {
> + dma_cache_sync (NULL, skb->data, skb->len, DMA_TO_DEVICE);
The use of dma_cache_sync here makes no sense, since it's the wrong API.
Also, effectively it results in the same kind of cache flush as the one
that's done by the DMA mapping done later.
- Felix
_______________________________________________
Lede-dev mailing list
Lede-dev@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/lede-dev
