mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 14:37:57 +00:00
202 lines
6.1 KiB
Diff
202 lines
6.1 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
|
|
Date: Sun, 20 Nov 2022 23:01:00 +0100
|
|
Subject: [PATCH] net: ethernet: mtk_eth_soc: drop generic vlan rx offload,
|
|
only use DSA untagging
|
|
|
|
Through testing I found out that hardware vlan rx offload support seems to
|
|
have some hardware issues. At least when using multiple MACs and when receiving
|
|
tagged packets on the secondary MAC, the hardware can sometimes start to emit
|
|
wrong tags on the first MAC as well.
|
|
|
|
In order to avoid such issues, drop the feature configuration and use the
|
|
offload feature only for DSA hardware untagging on MT7621/MT7622 devices which
|
|
only use one MAC.
|
|
|
|
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
|
|
@@ -1829,9 +1829,7 @@ static int mtk_poll_rx(struct napi_struc
|
|
|
|
while (done < budget) {
|
|
unsigned int pktlen, *rxdcsum;
|
|
- bool has_hwaccel_tag = false;
|
|
struct net_device *netdev;
|
|
- u16 vlan_proto, vlan_tci;
|
|
dma_addr_t dma_addr;
|
|
u32 hash, reason;
|
|
int mac = 0;
|
|
@@ -1966,36 +1964,21 @@ static int mtk_poll_rx(struct napi_struc
|
|
skb_checksum_none_assert(skb);
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
|
|
- if (reason == MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED)
|
|
- mtk_ppe_check_skb(eth->ppe[0], skb, hash);
|
|
-
|
|
- if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) {
|
|
- if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {
|
|
- if (trxd.rxd3 & RX_DMA_VTAG_V2) {
|
|
- vlan_proto = RX_DMA_VPID(trxd.rxd4);
|
|
- vlan_tci = RX_DMA_VID(trxd.rxd4);
|
|
- has_hwaccel_tag = true;
|
|
- }
|
|
- } else if (trxd.rxd2 & RX_DMA_VTAG) {
|
|
- vlan_proto = RX_DMA_VPID(trxd.rxd3);
|
|
- vlan_tci = RX_DMA_VID(trxd.rxd3);
|
|
- has_hwaccel_tag = true;
|
|
- }
|
|
- }
|
|
-
|
|
/* When using VLAN untagging in combination with DSA, the
|
|
* hardware treats the MTK special tag as a VLAN and untags it.
|
|
*/
|
|
- if (has_hwaccel_tag && netdev_uses_dsa(netdev)) {
|
|
- unsigned int port = vlan_proto & GENMASK(2, 0);
|
|
+ if (!MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2) &&
|
|
+ (trxd.rxd2 & RX_DMA_VTAG) && netdev_uses_dsa(netdev)) {
|
|
+ unsigned int port = RX_DMA_VPID(trxd.rxd3) & GENMASK(2, 0);
|
|
|
|
if (port < ARRAY_SIZE(eth->dsa_meta) &&
|
|
eth->dsa_meta[port])
|
|
skb_dst_set_noref(skb, ð->dsa_meta[port]->dst);
|
|
- } else if (has_hwaccel_tag) {
|
|
- __vlan_hwaccel_put_tag(skb, htons(vlan_proto), vlan_tci);
|
|
}
|
|
|
|
+ if (reason == MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED)
|
|
+ mtk_ppe_check_skb(eth->ppe[0], skb, hash);
|
|
+
|
|
skb_record_rx_queue(skb, 0);
|
|
napi_gro_receive(napi, skb);
|
|
|
|
@@ -2810,29 +2793,11 @@ static netdev_features_t mtk_fix_feature
|
|
|
|
static int mtk_set_features(struct net_device *dev, netdev_features_t features)
|
|
{
|
|
- struct mtk_mac *mac = netdev_priv(dev);
|
|
- struct mtk_eth *eth = mac->hw;
|
|
netdev_features_t diff = dev->features ^ features;
|
|
- int i;
|
|
|
|
if ((diff & NETIF_F_LRO) && !(features & NETIF_F_LRO))
|
|
mtk_hwlro_netdev_disable(dev);
|
|
|
|
- /* Set RX VLAN offloading */
|
|
- if (!(diff & NETIF_F_HW_VLAN_CTAG_RX))
|
|
- return 0;
|
|
-
|
|
- mtk_w32(eth, !!(features & NETIF_F_HW_VLAN_CTAG_RX),
|
|
- MTK_CDMP_EG_CTRL);
|
|
-
|
|
- /* sync features with other MAC */
|
|
- for (i = 0; i < MTK_MAC_COUNT; i++) {
|
|
- if (!eth->netdev[i] || eth->netdev[i] == dev)
|
|
- continue;
|
|
- eth->netdev[i]->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
|
|
- eth->netdev[i]->features |= features & NETIF_F_HW_VLAN_CTAG_RX;
|
|
- }
|
|
-
|
|
return 0;
|
|
}
|
|
|
|
@@ -3146,30 +3111,6 @@ static int mtk_open(struct net_device *d
|
|
struct mtk_eth *eth = mac->hw;
|
|
int i, err;
|
|
|
|
- if (mtk_uses_dsa(dev) && !eth->prog) {
|
|
- for (i = 0; i < ARRAY_SIZE(eth->dsa_meta); i++) {
|
|
- struct metadata_dst *md_dst = eth->dsa_meta[i];
|
|
-
|
|
- if (md_dst)
|
|
- continue;
|
|
-
|
|
- md_dst = metadata_dst_alloc(0, METADATA_HW_PORT_MUX,
|
|
- GFP_KERNEL);
|
|
- if (!md_dst)
|
|
- return -ENOMEM;
|
|
-
|
|
- md_dst->u.port_info.port_id = i;
|
|
- eth->dsa_meta[i] = md_dst;
|
|
- }
|
|
- } else {
|
|
- /* Hardware special tag parsing needs to be disabled if at least
|
|
- * one MAC does not use DSA.
|
|
- */
|
|
- u32 val = mtk_r32(eth, MTK_CDMP_IG_CTRL);
|
|
- val &= ~MTK_CDMP_STAG_EN;
|
|
- mtk_w32(eth, val, MTK_CDMP_IG_CTRL);
|
|
- }
|
|
-
|
|
err = phylink_of_phy_connect(mac->phylink, mac->of_node, 0);
|
|
if (err) {
|
|
netdev_err(dev, "%s: could not attach PHY: %d\n", __func__,
|
|
@@ -3210,6 +3151,35 @@ static int mtk_open(struct net_device *d
|
|
phylink_start(mac->phylink);
|
|
netif_tx_start_all_queues(dev);
|
|
|
|
+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
|
|
+ return 0;
|
|
+
|
|
+ if (mtk_uses_dsa(dev) && !eth->prog) {
|
|
+ for (i = 0; i < ARRAY_SIZE(eth->dsa_meta); i++) {
|
|
+ struct metadata_dst *md_dst = eth->dsa_meta[i];
|
|
+
|
|
+ if (md_dst)
|
|
+ continue;
|
|
+
|
|
+ md_dst = metadata_dst_alloc(0, METADATA_HW_PORT_MUX,
|
|
+ GFP_KERNEL);
|
|
+ if (!md_dst)
|
|
+ return -ENOMEM;
|
|
+
|
|
+ md_dst->u.port_info.port_id = i;
|
|
+ eth->dsa_meta[i] = md_dst;
|
|
+ }
|
|
+ } else {
|
|
+ /* Hardware special tag parsing needs to be disabled if at least
|
|
+ * one MAC does not use DSA.
|
|
+ */
|
|
+ u32 val = mtk_r32(eth, MTK_CDMP_IG_CTRL);
|
|
+ val &= ~MTK_CDMP_STAG_EN;
|
|
+ mtk_w32(eth, val, MTK_CDMP_IG_CTRL);
|
|
+
|
|
+ mtk_w32(eth, 0, MTK_CDMP_EG_CTRL);
|
|
+ }
|
|
+
|
|
return 0;
|
|
}
|
|
|
|
@@ -3694,10 +3664,9 @@ static int mtk_hw_init(struct mtk_eth *e
|
|
if (!MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {
|
|
val = mtk_r32(eth, MTK_CDMP_IG_CTRL);
|
|
mtk_w32(eth, val | MTK_CDMP_STAG_EN, MTK_CDMP_IG_CTRL);
|
|
- }
|
|
|
|
- /* Enable RX VLan Offloading */
|
|
- mtk_w32(eth, 1, MTK_CDMP_EG_CTRL);
|
|
+ mtk_w32(eth, 1, MTK_CDMP_EG_CTRL);
|
|
+ }
|
|
|
|
/* set interrupt delays based on current Net DIM sample */
|
|
mtk_dim_rx(ð->rx_dim.work);
|
|
@@ -4335,7 +4304,7 @@ static int mtk_add_mac(struct mtk_eth *e
|
|
eth->netdev[id]->hw_features |= NETIF_F_LRO;
|
|
|
|
eth->netdev[id]->vlan_features = eth->soc->hw_features &
|
|
- ~(NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX);
|
|
+ ~NETIF_F_HW_VLAN_CTAG_TX;
|
|
eth->netdev[id]->features |= eth->soc->hw_features;
|
|
eth->netdev[id]->ethtool_ops = &mtk_ethtool_ops;
|
|
|
|
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
|
|
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
|
|
@@ -48,7 +48,6 @@
|
|
#define MTK_HW_FEATURES (NETIF_F_IP_CSUM | \
|
|
NETIF_F_RXCSUM | \
|
|
NETIF_F_HW_VLAN_CTAG_TX | \
|
|
- NETIF_F_HW_VLAN_CTAG_RX | \
|
|
NETIF_F_SG | NETIF_F_TSO | \
|
|
NETIF_F_TSO6 | \
|
|
NETIF_F_IPV6_CSUM |\
|