net: ethernet: mtk_eth_soc: fix hw hash reporting for MTK_NETSYS_V2

Properly report hw rx hash for mt7986 chipset accroding to the new dma
descriptor layout.

Fixes: 197c9e9b17b11 ("net: ethernet: mtk_eth_soc: introduce support for mt7986 chipset")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/091394ea4e705fbb35f828011d98d0ba33808f69.1661257293.git.lorenzo@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 8aff4c0..5ace460 100644 (file)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1891,10 +1891,19 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
                skb->dev = netdev;
                bytes += skb->len;
 
-               if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+               if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {
+                       hash = trxd.rxd5 & MTK_RXD5_FOE_ENTRY;
+                       if (hash != MTK_RXD5_FOE_ENTRY)
+                               skb_set_hash(skb, jhash_1word(hash, 0),
+                                            PKT_HASH_TYPE_L4);
                        rxdcsum = &trxd.rxd3;
-               else
+               } else {
+                       hash = trxd.rxd4 & MTK_RXD4_FOE_ENTRY;
+                       if (hash != MTK_RXD4_FOE_ENTRY)
+                               skb_set_hash(skb, jhash_1word(hash, 0),
+                                            PKT_HASH_TYPE_L4);
                        rxdcsum = &trxd.rxd4;
+               }
 
                if (*rxdcsum & eth->soc->txrx.rx_dma_l4_valid)
                        skb->ip_summed = CHECKSUM_UNNECESSARY;
@@ -1902,16 +1911,9 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
                        skb_checksum_none_assert(skb);
                skb->protocol = eth_type_trans(skb, netdev);
 
-               hash = trxd.rxd4 & MTK_RXD4_FOE_ENTRY;
-               if (hash != MTK_RXD4_FOE_ENTRY) {
-                       hash = jhash_1word(hash, 0);
-                       skb_set_hash(skb, hash, PKT_HASH_TYPE_L4);
-               }
-
                reason = FIELD_GET(MTK_RXD4_PPE_CPU_REASON, trxd.rxd4);
                if (reason == MTK_PPE_CPU_REASON_HIT_UNBIND_RATE_REACHED)
-                       mtk_ppe_check_skb(eth->ppe, skb,
-                                         trxd.rxd4 & MTK_RXD4_FOE_ENTRY);
+                       mtk_ppe_check_skb(eth->ppe, skb, hash);
 
                if (netdev->features & NETIF_F_HW_VLAN_CTAG_RX) {
                        if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 7405c97..ecf85e9 100644 (file)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -314,6 +314,11 @@
 #define RX_DMA_L4_VALID_PDMA   BIT(30)         /* when PDMA is used */
 #define RX_DMA_SPECIAL_TAG     BIT(22)
 
+/* PDMA descriptor rxd5 */
+#define MTK_RXD5_FOE_ENTRY     GENMASK(14, 0)
+#define MTK_RXD5_PPE_CPU_REASON        GENMASK(22, 18)
+#define MTK_RXD5_SRC_PORT      GENMASK(29, 26)
+
 #define RX_DMA_GET_SPORT(x)    (((x) >> 19) & 0xf)
 #define RX_DMA_GET_SPORT_V2(x) (((x) >> 26) & 0x7)