diff options
Diffstat (limited to 'target/linux/generic/pending-5.4/770-13-net-ethernet-mtk_eth_soc-fix-parsing-packets-in-GDM.patch')
| -rw-r--r-- | target/linux/generic/pending-5.4/770-13-net-ethernet-mtk_eth_soc-fix-parsing-packets-in-GDM.patch | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.4/770-13-net-ethernet-mtk_eth_soc-fix-parsing-packets-in-GDM.patch b/target/linux/generic/pending-5.4/770-13-net-ethernet-mtk_eth_soc-fix-parsing-packets-in-GDM.patch new file mode 100644 index 0000000000..36a52bbc06 --- /dev/null +++ b/target/linux/generic/pending-5.4/770-13-net-ethernet-mtk_eth_soc-fix-parsing-packets-in-GDM.patch @@ -0,0 +1,75 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Sun, 13 Sep 2020 08:17:02 +0200 +Subject: [PATCH] net: ethernet: mtk_eth_soc: fix parsing packets in GDM + +When using DSA, set the special tag in GDM ingress control to allow the MAC +to parse packets properly earlier. This affects rx DMA source port reporting. + +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 +@@ -19,6 +19,7 @@ + #include <linux/interrupt.h> + #include <linux/pinctrl/devinfo.h> + #include <linux/phylink.h> ++#include <net/dsa.h> + + #include "mtk_eth_soc.h" + +@@ -1240,12 +1241,14 @@ static int mtk_poll_rx(struct napi_struc + u8 *data, *new_data; + struct mtk_rx_dma *rxd, trxd; + int done = 0, bytes = 0; ++ bool uses_dsa = eth->netdev[0] && netdev_uses_dsa(eth->netdev[0]); + + while (done < budget) { + struct net_device *netdev; + unsigned int pktlen; + dma_addr_t dma_addr; + int mac; ++ u16 hash; + + ring = mtk_get_rx_ring(eth); + if (unlikely(!ring)) +@@ -1259,13 +1262,13 @@ static int mtk_poll_rx(struct napi_struc + break; + + /* find out which mac the packet come from. values start at 1 */ +- if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { ++ if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) + mac = 0; +- } else { +- mac = (trxd.rxd4 >> RX_DMA_FPORT_SHIFT) & +- RX_DMA_FPORT_MASK; +- mac--; +- } ++ else if (uses_dsa) ++ mac = !(trxd.rxd4 >> 22); ++ else ++ mac = ((trxd.rxd4 >> RX_DMA_FPORT_SHIFT) & ++ RX_DMA_FPORT_MASK) - 1; + + if (unlikely(mac < 0 || mac >= MTK_MAC_COUNT || + !eth->netdev[mac])) +@@ -2247,6 +2250,9 @@ static void mtk_gdm_config(struct mtk_et + + val |= config; + ++ if (!i && eth->netdev[0] && netdev_uses_dsa(eth->netdev[0])) ++ val |= MTK_GDMA_SPECIAL_TAG; ++ + mtk_w32(eth, val, MTK_GDMA_FWD_CFG(i)); + } + /* Reset and enable PSE */ +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h +@@ -82,6 +82,7 @@ + + /* GDM Exgress Control Register */ + #define MTK_GDMA_FWD_CFG(x) (0x500 + (x * 0x1000)) ++#define MTK_GDMA_SPECIAL_TAG BIT(24) + #define MTK_GDMA_ICS_EN BIT(22) + #define MTK_GDMA_TCS_EN BIT(21) + #define MTK_GDMA_UCS_EN BIT(20) |