diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/730-10-v6.3-net-ethernet-mtk_eth_soc-drop-packets-to-WDMA-if-the.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/730-10-v6.3-net-ethernet-mtk_eth_soc-drop-packets-to-WDMA-if-the.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/730-10-v6.3-net-ethernet-mtk_eth_soc-drop-packets-to-WDMA-if-the.patch b/target/linux/generic/backport-5.15/730-10-v6.3-net-ethernet-mtk_eth_soc-drop-packets-to-WDMA-if-the.patch new file mode 100644 index 0000000000..d6b3c28ccc --- /dev/null +++ b/target/linux/generic/backport-5.15/730-10-v6.3-net-ethernet-mtk_eth_soc-drop-packets-to-WDMA-if-the.patch @@ -0,0 +1,37 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Thu, 3 Nov 2022 17:46:25 +0100 +Subject: [PATCH] net: ethernet: mtk_eth_soc: drop packets to WDMA if the + ring is full + +Improves handling of DMA ring overflow. +Clarify other WDMA drop related comment. + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -3711,9 +3711,12 @@ static int mtk_hw_init(struct mtk_eth *e + mtk_w32(eth, 0x21021000, MTK_FE_INT_GRP); + + if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) { +- /* PSE should not drop port8 and port9 packets */ ++ /* PSE should not drop port8 and port9 packets from WDMA Tx */ + mtk_w32(eth, 0x00000300, PSE_DROP_CFG); + ++ /* PSE should drop packets to port 8/9 on WDMA Rx ring full */ ++ mtk_w32(eth, 0x00000300, PSE_PPE0_DROP); ++ + /* PSE Free Queue Flow Control */ + mtk_w32(eth, 0x01fa01f4, PSE_FQFC_CFG2); + +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h +@@ -140,6 +140,7 @@ + #define PSE_FQFC_CFG1 0x100 + #define PSE_FQFC_CFG2 0x104 + #define PSE_DROP_CFG 0x108 ++#define PSE_PPE0_DROP 0x110 + + /* PSE Input Queue Reservation Register*/ + #define PSE_IQ_REV(x) (0x140 + (((x) - 1) << 2)) |