diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/610-v5.13-47-net-ethernet-mtk_eth_soc-only-read-the-full-RX-descr.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/610-v5.13-47-net-ethernet-mtk_eth_soc-only-read-the-full-RX-descr.patch | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/target/linux/generic/backport-5.10/610-v5.13-47-net-ethernet-mtk_eth_soc-only-read-the-full-RX-descr.patch b/target/linux/generic/backport-5.10/610-v5.13-47-net-ethernet-mtk_eth_soc-only-read-the-full-RX-descr.patch deleted file mode 100644 index 6484361ee5..0000000000 --- a/target/linux/generic/backport-5.10/610-v5.13-47-net-ethernet-mtk_eth_soc-only-read-the-full-RX-descr.patch +++ /dev/null @@ -1,49 +0,0 @@ -From 816ac3e6e67bdd78d86226c6eb53619780750e92 Mon Sep 17 00:00:00 2001 -From: Felix Fietkau <nbd@nbd.name> -Date: Thu, 22 Apr 2021 22:21:04 -0700 -Subject: [PATCH] net: ethernet: mtk_eth_soc: only read the full RX descriptor - if DMA is done - -Uncached memory access is expensive, and there is no need to access all -descriptor words if we can't process them anyway - -Signed-off-by: Felix Fietkau <nbd@nbd.name> -Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> -Signed-off-by: David S. Miller <davem@davemloft.net> ---- - drivers/net/ethernet/mediatek/mtk_eth_soc.c | 12 ++++++++---- - 1 file changed, 8 insertions(+), 4 deletions(-) - ---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c -+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c -@@ -799,13 +799,18 @@ static inline int mtk_max_buf_size(int f - return buf_size; - } - --static inline void mtk_rx_get_desc(struct mtk_rx_dma *rxd, -+static inline bool mtk_rx_get_desc(struct mtk_rx_dma *rxd, - struct mtk_rx_dma *dma_rxd) - { -- rxd->rxd1 = READ_ONCE(dma_rxd->rxd1); - rxd->rxd2 = READ_ONCE(dma_rxd->rxd2); -+ if (!(rxd->rxd2 & RX_DMA_DONE)) -+ return false; -+ -+ rxd->rxd1 = READ_ONCE(dma_rxd->rxd1); - rxd->rxd3 = READ_ONCE(dma_rxd->rxd3); - rxd->rxd4 = READ_ONCE(dma_rxd->rxd4); -+ -+ return true; - } - - static void *mtk_max_lro_buf_alloc(gfp_t gfp_mask) -@@ -1288,8 +1293,7 @@ static int mtk_poll_rx(struct napi_struc - rxd = &ring->dma[idx]; - data = ring->data[idx]; - -- mtk_rx_get_desc(&trxd, rxd); -- if (!(trxd.rxd2 & RX_DMA_DONE)) -+ if (!mtk_rx_get_desc(&trxd, rxd)) - break; - - /* find out which mac the packet come from. values start at 1 */ |