From: Felix Fietkau <nbd@nbd.name>
Date: Wed, 16 Nov 2022 08:07:34 +0000 (+0100)
Subject: net: ethernet: mediatek: ppe: assign per-port queues for offloaded traffic
X-Git-Tag: v6.6.17~5932^2~165
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8bd8dcc5e47f0f9dc40187c3b8b42d992181eee1;p=platform%2Fkernel%2Flinux-rpi.git

net: ethernet: mediatek: ppe: assign per-port queues for offloaded traffic

Keeps traffic sent to the switch within link speed limits

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20221116080734.44013-7-nbd@nbd.name
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c
index 3ee2bf53f9e5..96ad0a9b79b4 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
@@ -399,6 +399,24 @@ int mtk_foe_entry_set_wdma(struct mtk_eth *eth, struct mtk_foe_entry *entry,
 	return 0;
 }
 
+int mtk_foe_entry_set_queue(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			    unsigned int queue)
+{
+	u32 *ib2 = mtk_foe_entry_ib2(eth, entry);
+
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {
+		*ib2 &= ~MTK_FOE_IB2_QID_V2;
+		*ib2 |= FIELD_PREP(MTK_FOE_IB2_QID_V2, queue);
+		*ib2 |= MTK_FOE_IB2_PSE_QOS_V2;
+	} else {
+		*ib2 &= ~MTK_FOE_IB2_QID;
+		*ib2 |= FIELD_PREP(MTK_FOE_IB2_QID, queue);
+		*ib2 |= MTK_FOE_IB2_PSE_QOS;
+	}
+
+	return 0;
+}
+
 static bool
 mtk_flow_entry_match(struct mtk_eth *eth, struct mtk_flow_entry *entry,
 		     struct mtk_foe_entry *data)
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.h b/drivers/net/ethernet/mediatek/mtk_ppe.h
index 0b7a67a958e4..be635864bb96 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.h
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.h
@@ -68,7 +68,9 @@ enum {
 #define MTK_FOE_IB2_DSCP		GENMASK(31, 24)
 
 /* CONFIG_MEDIATEK_NETSYS_V2 */
+#define MTK_FOE_IB2_QID_V2			GENMASK(6, 0)
 #define MTK_FOE_IB2_PORT_MG_V2		BIT(7)
+#define MTK_FOE_IB2_PSE_QOS_V2		BIT(8)
 #define MTK_FOE_IB2_DEST_PORT_V2	GENMASK(12, 9)
 #define MTK_FOE_IB2_MULTICAST_V2	BIT(13)
 #define MTK_FOE_IB2_WDMA_WINFO_V2	BIT(19)
@@ -350,6 +352,8 @@ int mtk_foe_entry_set_pppoe(struct mtk_eth *eth, struct mtk_foe_entry *entry,
 			    int sid);
 int mtk_foe_entry_set_wdma(struct mtk_eth *eth, struct mtk_foe_entry *entry,
 			   int wdma_idx, int txq, int bss, int wcid);
+int mtk_foe_entry_set_queue(struct mtk_eth *eth, struct mtk_foe_entry *entry,
+			    unsigned int queue);
 int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
 void mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
 int mtk_foe_entry_idle_time(struct mtk_ppe *ppe, struct mtk_flow_entry *entry);
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
index 28bbd1df3e30..81afd5ee3fbf 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
@@ -188,7 +188,7 @@ mtk_flow_set_output_device(struct mtk_eth *eth, struct mtk_foe_entry *foe,
 			   int *wed_index)
 {
 	struct mtk_wdma_info info = {};
-	int pse_port, dsa_port;
+	int pse_port, dsa_port, queue;
 
 	if (mtk_flow_get_wdma_info(dev, dest_mac, &info) == 0) {
 		mtk_foe_entry_set_wdma(eth, foe, info.wdma_idx, info.queue,
@@ -212,8 +212,6 @@ mtk_flow_set_output_device(struct mtk_eth *eth, struct mtk_foe_entry *foe,
 	}
 
 	dsa_port = mtk_flow_get_dsa_port(&dev);
-	if (dsa_port >= 0)
-		mtk_foe_entry_set_dsa(eth, foe, dsa_port);
 
 	if (dev == eth->netdev[0])
 		pse_port = 1;
@@ -222,6 +220,14 @@ mtk_flow_set_output_device(struct mtk_eth *eth, struct mtk_foe_entry *foe,
 	else
 		return -EOPNOTSUPP;
 
+	if (dsa_port >= 0) {
+		mtk_foe_entry_set_dsa(eth, foe, dsa_port);
+		queue = 3 + dsa_port;
+	} else {
+		queue = pse_port - 1;
+	}
+	mtk_foe_entry_set_queue(eth, foe, queue);
+
 out:
 	mtk_foe_entry_set_pse_port(eth, foe, pse_port);