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mediatek: fix hardware flow offload

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Add support for dealing with DSA ports

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2020-09-17 19:14:13 +02:00
parent 520074e57e
commit 4fb58813f9
2 changed files with 95 additions and 1 deletions
target/linux
generic/pending-5.4
647-net-dsa-support-hardware-flow-table-offload.patch
mediatek/patches-5.4
0999-hnat.patch

78
target/linux/generic/pending-5.4/647-net-dsa-support-hardware-flow-table-offload.patch Normal file

@ -0,0 +1,78 @@
From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 17 Sep 2020 18:41:23 +0200
Subject: [PATCH] net: dsa: support hardware flow table offload
Look up the master device and the port id
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/include/net/netfilter/nf_flow_table.h
+++ b/include/net/netfilter/nf_flow_table.h
@@ -90,6 +90,7 @@ struct flow_offload {
#define FLOW_OFFLOAD_PATH_ETHERNET BIT(0)
#define FLOW_OFFLOAD_PATH_VLAN BIT(1)
#define FLOW_OFFLOAD_PATH_PPPOE BIT(2)
+#define FLOW_OFFLOAD_PATH_DSA BIT(3)
struct flow_offload_hw_path {
struct net_device *dev;
@@ -100,6 +101,7 @@ struct flow_offload_hw_path {
u16 vlan_proto;
u16 vlan_id;
u16 pppoe_sid;
+ u16 dsa_port;
};
#define NF_FLOW_TIMEOUT (30 * HZ)
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -19,6 +19,10 @@
#include <linux/if_bridge.h>
#include <linux/netpoll.h>
#include <linux/ptp_classify.h>
+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
+#include <linux/netfilter.h>
+#include <net/netfilter/nf_flow_table.h>
+#endif
#include "dsa_priv.h"
@@ -1221,6 +1225,27 @@ static struct devlink_port *dsa_slave_ge
return dp->ds->devlink ? &dp->devlink_port : NULL;
}
+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
+static int dsa_flow_offload_check(struct flow_offload_hw_path *path)
+{
+ struct net_device *dev = path->dev;
+ struct dsa_port *dp;
+
+ if (!(path->flags & FLOW_OFFLOAD_PATH_ETHERNET))
+ return -EINVAL;
+
+ dp = dsa_slave_to_port(dev);
+ path->dsa_port = dp->index;
+ path->dev = dsa_slave_to_master(dev);
+ path->flags |= FLOW_OFFLOAD_PATH_DSA;
+
+ if (path->dev->netdev_ops->ndo_flow_offload_check)
+ return path->dev->netdev_ops->ndo_flow_offload_check(path);
+
+ return 0;
+}
+#endif /* CONFIG_NF_FLOW_TABLE */
+
static const struct net_device_ops dsa_slave_netdev_ops = {
.ndo_open = dsa_slave_open,
.ndo_stop = dsa_slave_close,
@@ -1245,6 +1270,9 @@ static const struct net_device_ops dsa_s
.ndo_vlan_rx_add_vid = dsa_slave_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid,
.ndo_get_devlink_port = dsa_slave_get_devlink_port,
+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
+ .ndo_flow_offload_check = dsa_flow_offload_check,
+#endif
};
static struct device_type dsa_type = {

18
target/linux/mediatek/patches-5.4/0999-hnat.patch

@ -321,7 +321,7 @@
#endif /* MTK_ETH_H */ #endif /* MTK_ETH_H */
--- /dev/null --- /dev/null
+++ b/drivers/net/ethernet/mediatek/mtk_offload.c +++ b/drivers/net/ethernet/mediatek/mtk_offload.c
@@ -0,0 +1,593 @@ @@ -0,0 +1,609 @@
+/* This program is free software; you can redistribute it and/or modify +/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by + * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License + * the Free Software Foundation; version 2 of the License
@ -430,6 +430,22 @@
+ } + }
+ } + }
+ +
+ if (dest->flags & FLOW_OFFLOAD_PATH_DSA) {
+ entry->bfib1.vlan_layer = 1;
+
+ entry->ipv4_hnapt.bfib1.vpm = 0;
+ entry->ipv4_hnapt.etype = BIT(dest->dsa_port);
+
+ if (dest->flags & FLOW_OFFLOAD_PATH_VLAN) {
+ if (dest->vlan_proto != htons(ETH_P_8021Q))
+ return -EINVAL;
+
+ entry->ipv4_hnapt.etype |= BIT(8);
+ } else {
+ entry->ipv4_hnapt.vlan1 = 0;
+ }
+ }
+
+ return 0; + return 0;
+} +}
+ +