--- /dev/null
+From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= <arinc.unal@arinc9.com>
+Date: Sat, 28 Jan 2023 12:42:32 +0300
+Subject: [PATCH] net: ethernet: mtk_eth_soc: disable hardware DSA untagging
+ for second MAC
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+According to my tests on MT7621AT and MT7623NI SoCs, hardware DSA untagging
+won't work on the second MAC. Therefore, disable this feature when the
+second MAC of the MT7621 and MT7623 SoCs is being used.
+
+Fixes: 2d7605a72906 ("net: ethernet: mtk_eth_soc: enable hardware DSA untagging")
+Link: https://lore.kernel.org/netdev/6249fc14-b38a-c770-36b4-5af6d41c21d3@arinc9.com/
+Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
+Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
+Link: https://lore.kernel.org/r/20230128094232.2451947-1-arinc.unal@arinc9.com
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -3142,7 +3142,8 @@ static int mtk_open(struct net_device *d
+ struct mtk_eth *eth = mac->hw;
+ int i, err;
+
+- if (mtk_uses_dsa(dev) && !eth->prog) {
++ if ((mtk_uses_dsa(dev) && !eth->prog) &&
++ !(mac->id == 1 && MTK_HAS_CAPS(eth->soc->caps, MTK_GMAC1_TRGMII))) {
+ for (i = 0; i < ARRAY_SIZE(eth->dsa_meta); i++) {
+ struct metadata_dst *md_dst = eth->dsa_meta[i];
+
+@@ -3159,7 +3160,8 @@ static int mtk_open(struct net_device *d
+ }
+ } else {
+ /* Hardware special tag parsing needs to be disabled if at least
+- * one MAC does not use DSA.
++ * one MAC does not use DSA, or the second MAC of the MT7621 and
++ * MT7623 SoCs is being used.
+ */
+ u32 val = mtk_r32(eth, MTK_CDMP_IG_CTRL);
+ val &= ~MTK_CDMP_STAG_EN;
--- /dev/null
+From: =?UTF-8?q?Ar=C4=B1n=C3=A7=20=C3=9CNAL?= <arinc.unal@arinc9.com>
+Date: Sun, 5 Feb 2023 20:53:31 +0300
+Subject: [PATCH] net: ethernet: mtk_eth_soc: enable special tag when any MAC
+ uses DSA
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The special tag is only enabled when the first MAC uses DSA. However, it
+must be enabled when any MAC uses DSA. Change the check accordingly.
+
+This fixes hardware DSA untagging not working on the second MAC of the
+MT7621 and MT7623 SoCs, and likely other SoCs too. Therefore, remove the
+check that disables hardware DSA untagging for the second MAC of the MT7621
+and MT7623 SoCs.
+
+Fixes: a1f47752fd62 ("net: ethernet: mtk_eth_soc: disable hardware DSA untagging for second MAC")
+Co-developed-by: Richard van Schagen <richard@routerhints.com>
+Signed-off-by: Richard van Schagen <richard@routerhints.com>
+Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -3077,7 +3077,7 @@ static void mtk_gdm_config(struct mtk_et
+
+ val |= config;
+
+- if (!i && eth->netdev[0] && netdev_uses_dsa(eth->netdev[0]))
++ if (eth->netdev[i] && netdev_uses_dsa(eth->netdev[i]))
+ val |= MTK_GDMA_SPECIAL_TAG;
+
+ mtk_w32(eth, val, MTK_GDMA_FWD_CFG(i));
+@@ -3142,8 +3142,7 @@ static int mtk_open(struct net_device *d
+ struct mtk_eth *eth = mac->hw;
+ int i, err;
+
+- if ((mtk_uses_dsa(dev) && !eth->prog) &&
+- !(mac->id == 1 && MTK_HAS_CAPS(eth->soc->caps, MTK_GMAC1_TRGMII))) {
++ 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];
+
+@@ -3160,8 +3159,7 @@ static int mtk_open(struct net_device *d
+ }
+ } else {
+ /* Hardware special tag parsing needs to be disabled if at least
+- * one MAC does not use DSA, or the second MAC of the MT7621 and
+- * MT7623 SoCs is being used.
++ * one MAC does not use DSA.
+ */
+ u32 val = mtk_r32(eth, MTK_CDMP_IG_CTRL);
+ val &= ~MTK_CDMP_STAG_EN;
--- /dev/null
+From: Vladimir Oltean <vladimir.oltean@nxp.com>
+Date: Tue, 7 Feb 2023 12:30:27 +0200
+Subject: [PATCH] net: ethernet: mtk_eth_soc: fix DSA TX tag hwaccel for switch
+ port 0
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Arınç reports that on his MT7621AT Unielec U7621-06 board and MT7623NI
+Bananapi BPI-R2, packets received by the CPU over mt7530 switch port 0
+(of which this driver acts as the DSA master) are not processed
+correctly by software. More precisely, they arrive without a DSA tag
+(in packet or in the hwaccel area - skb_metadata_dst()), so DSA cannot
+demux them towards the switch's interface for port 0. Traffic from other
+ports receives a skb_metadata_dst() with the correct port and is demuxed
+properly.
+
+Looking at mtk_poll_rx(), it becomes apparent that this driver uses the
+skb vlan hwaccel area:
+
+ union {
+ u32 vlan_all;
+ struct {
+ __be16 vlan_proto;
+ __u16 vlan_tci;
+ };
+ };
+
+as a temporary storage for the VLAN hwaccel tag, or the DSA hwaccel tag.
+If this is a DSA master it's a DSA hwaccel tag, and finally clears up
+the skb VLAN hwaccel header.
+
+I'm guessing that the problem is the (mis)use of API.
+skb_vlan_tag_present() looks like this:
+
+ #define skb_vlan_tag_present(__skb) (!!(__skb)->vlan_all)
+
+So if both vlan_proto and vlan_tci are zeroes, skb_vlan_tag_present()
+returns precisely false. I don't know for sure what is the format of the
+DSA hwaccel tag, but I surely know that lowermost 3 bits of vlan_proto
+are 0 when receiving from port 0:
+
+ unsigned int port = vlan_proto & GENMASK(2, 0);
+
+If the RX descriptor has no other bits set to non-zero values in
+RX_DMA_VTAG, then the call to __vlan_hwaccel_put_tag() will not, in
+fact, make the subsequent skb_vlan_tag_present() return true, because
+it's implemented like this:
+
+static inline void __vlan_hwaccel_put_tag(struct sk_buff *skb,
+ __be16 vlan_proto, u16 vlan_tci)
+{
+ skb->vlan_proto = vlan_proto;
+ skb->vlan_tci = vlan_tci;
+}
+
+What we need to do to fix this problem (assuming this is the problem) is
+to stop using skb->vlan_all as temporary storage for driver affairs, and
+just create some local variables that serve the same purpose, but
+hopefully better. Instead of calling skb_vlan_tag_present(), let's look
+at a boolean has_hwaccel_tag which we set to true when the RX DMA
+descriptors have something. Disambiguate based on netdev_uses_dsa()
+whether this is a VLAN or DSA hwaccel tag, and only call
+__vlan_hwaccel_put_tag() if we're certain it's a VLAN tag.
+
+Arınç confirms that the treatment works, so this validates the
+assumption.
+
+Link: https://lore.kernel.org/netdev/704f3a72-fc9e-714a-db54-272e17612637@arinc9.com/
+Fixes: 2d7605a72906 ("net: ethernet: mtk_eth_soc: enable hardware DSA untagging")
+Reported-by: Arınç ÜNAL <arinc.unal@arinc9.com>
+Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
+Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
+Reviewed-by: Felix Fietkau <nbd@nbd.name>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -1829,7 +1829,9 @@ 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;
+@@ -1969,27 +1971,29 @@ static int mtk_poll_rx(struct napi_struc
+
+ 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_hwaccel_put_tag(skb,
+- htons(RX_DMA_VPID(trxd.rxd4)),
+- RX_DMA_VID(trxd.rxd4));
++ 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_hwaccel_put_tag(skb, htons(RX_DMA_VPID(trxd.rxd3)),
+- RX_DMA_VID(trxd.rxd3));
++ 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 (skb_vlan_tag_present(skb) && netdev_uses_dsa(netdev)) {
+- unsigned int port = ntohs(skb->vlan_proto) & GENMASK(2, 0);
++ if (has_hwaccel_tag && netdev_uses_dsa(netdev)) {
++ unsigned int port = vlan_proto & GENMASK(2, 0);
+
+ if (port < ARRAY_SIZE(eth->dsa_meta) &&
+ eth->dsa_meta[port])
+ skb_dst_set_noref(skb, ð->dsa_meta[port]->dst);
+-
+- __vlan_hwaccel_clear_tag(skb);
++ } else if (has_hwaccel_tag) {
++ __vlan_hwaccel_put_tag(skb, htons(vlan_proto), vlan_tci);
+ }
+
+ skb_record_rx_queue(skb, 0);
--- /dev/null
+From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
+Date: Sun, 12 Feb 2023 07:51:51 +0100
+Subject: [PATCH] net: ethernet: mtk_wed: No need to clear memory after a
+ dma_alloc_coherent() call
+
+dma_alloc_coherent() already clears the allocated memory, there is no need
+to explicitly call memset().
+
+Moreover, it is likely that the size in the memset() is incorrect and
+should be "size * sizeof(*ring->desc)".
+
+Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
+Link: https://lore.kernel.org/r/d5acce7dd108887832c9719f62c7201b4c83b3fb.1676184599.git.christophe.jaillet@wanadoo.fr
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+
+--- a/drivers/net/ethernet/mediatek/mtk_wed.c
++++ b/drivers/net/ethernet/mediatek/mtk_wed.c
+@@ -786,7 +786,6 @@ mtk_wed_rro_ring_alloc(struct mtk_wed_de
+
+ ring->desc_size = sizeof(*ring->desc);
+ ring->size = size;
+- memset(ring->desc, 0, size);
+
+ return 0;
+ }
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -2967,8 +2967,8 @@ static irqreturn_t mtk_handle_irq_rx(int
+@@ -2971,8 +2971,8 @@ static irqreturn_t mtk_handle_irq_rx(int
eth->rx_events++;
if (likely(napi_schedule_prep(ð->rx_napi))) {
}
return IRQ_HANDLED;
-@@ -2980,8 +2980,8 @@ static irqreturn_t mtk_handle_irq_tx(int
+@@ -2984,8 +2984,8 @@ static irqreturn_t mtk_handle_irq_tx(int
eth->tx_events++;
if (likely(napi_schedule_prep(ð->tx_napi))) {
}
return IRQ_HANDLED;
-@@ -4612,6 +4612,8 @@ static int mtk_probe(struct platform_dev
+@@ -4616,6 +4616,8 @@ static int mtk_probe(struct platform_dev
* for NAPI to work
*/
init_dummy_netdev(ð->dummy_dev);
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -4582,7 +4582,9 @@ static int mtk_probe(struct platform_dev
+@@ -4586,7 +4586,9 @@ static int mtk_probe(struct platform_dev
u32 ppe_addr = eth->soc->reg_map->ppe_base + i * 0x400;
eth->ppe[i] = mtk_ppe_init(eth, eth->base + ppe_addr,
if (!eth->ppe[i]) {
err = -ENOMEM;
goto err_free_dev;
-@@ -4707,6 +4709,7 @@ static const struct mtk_soc_data mt7622_
+@@ -4711,6 +4713,7 @@ static const struct mtk_soc_data mt7622_
.required_pctl = false,
.offload_version = 2,
.hash_offset = 2,
.foe_entry_size = sizeof(struct mtk_foe_entry) - 16,
.txrx = {
.txd_size = sizeof(struct mtk_tx_dma),
-@@ -4744,6 +4747,7 @@ static const struct mtk_soc_data mt7629_
+@@ -4748,6 +4751,7 @@ static const struct mtk_soc_data mt7629_
.hw_features = MTK_HW_FEATURES,
.required_clks = MT7629_CLKS_BITMAP,
.required_pctl = false,
.txrx = {
.txd_size = sizeof(struct mtk_tx_dma),
.rxd_size = sizeof(struct mtk_rx_dma),
-@@ -4764,6 +4768,7 @@ static const struct mtk_soc_data mt7986_
+@@ -4768,6 +4772,7 @@ static const struct mtk_soc_data mt7986_
.offload_version = 2,
.hash_offset = 4,
.foe_entry_size = sizeof(struct mtk_foe_entry),
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
-@@ -1967,29 +1967,16 @@ static int mtk_poll_rx(struct napi_struc
- if (reason == MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED)
- mtk_ppe_check_skb(eth->ppe[0], skb, hash);
+@@ -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_hwaccel_put_tag(skb,
-- htons(RX_DMA_VPID(trxd.rxd4)),
-- RX_DMA_VID(trxd.rxd4));
+- 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_hwaccel_put_tag(skb, htons(RX_DMA_VPID(trxd.rxd3)),
-- RX_DMA_VID(trxd.rxd3));
+- 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 (skb_vlan_tag_present(skb) && netdev_uses_dsa(netdev)) {
-- unsigned int port = ntohs(skb->vlan_proto) & GENMASK(2, 0);
+- 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);
--
-- __vlan_hwaccel_clear_tag(skb);
+- } 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);
-@@ -2806,29 +2793,11 @@ static netdev_features_t mtk_fix_feature
+ 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)
{
return 0;
}
-@@ -3142,30 +3111,6 @@ static int mtk_open(struct net_device *d
+@@ -3146,30 +3111,6 @@ static int mtk_open(struct net_device *d
struct mtk_eth *eth = mac->hw;
int i, err;
err = phylink_of_phy_connect(mac->phylink, mac->of_node, 0);
if (err) {
netdev_err(dev, "%s: could not attach PHY: %d\n", __func__,
-@@ -3206,6 +3151,35 @@ static int mtk_open(struct net_device *d
+@@ -3210,6 +3151,35 @@ static int mtk_open(struct net_device *d
phylink_start(mac->phylink);
netif_tx_start_all_queues(dev);
return 0;
}
-@@ -3690,10 +3664,9 @@ static int mtk_hw_init(struct mtk_eth *e
+@@ -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);
/* set interrupt delays based on current Net DIM sample */
mtk_dim_rx(ð->rx_dim.work);
-@@ -4331,7 +4304,7 @@ static int mtk_add_mac(struct mtk_eth *e
+@@ -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 &
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
-@@ -1998,9 +1998,6 @@ 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);
--
- /* When using VLAN untagging in combination with DSA, the
- * hardware treats the MTK special tag as a VLAN and untags it.
- */
-@@ -2013,6 +2010,9 @@ static int mtk_poll_rx(struct napi_struc
- skb_dst_set_noref(skb, ð->dsa_meta[port]->dst);
- }
-
-+ 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);
-
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
@@ -8,6 +8,7 @@
projects / openwrt / staging / noltari.git / commitdiff