79 lines
2.2 KiB
Diff
79 lines
2.2 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
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Date: Thu, 17 Sep 2020 18:41:23 +0200
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Subject: [PATCH] net: dsa: support hardware flow table offload
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Look up the master device and the port id
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/include/net/netfilter/nf_flow_table.h
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+++ b/include/net/netfilter/nf_flow_table.h
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@@ -93,6 +93,7 @@ struct flow_offload {
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#define FLOW_OFFLOAD_PATH_ETHERNET BIT(0)
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#define FLOW_OFFLOAD_PATH_VLAN BIT(1)
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#define FLOW_OFFLOAD_PATH_PPPOE BIT(2)
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+#define FLOW_OFFLOAD_PATH_DSA BIT(3)
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struct flow_offload_hw_path {
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struct net_device *dev;
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@@ -103,6 +104,7 @@ struct flow_offload_hw_path {
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u16 vlan_proto;
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u16 vlan_id;
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u16 pppoe_sid;
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+ u16 dsa_port;
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};
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#define NF_FLOW_TIMEOUT (30 * HZ)
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--- a/net/dsa/slave.c
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+++ b/net/dsa/slave.c
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@@ -19,6 +19,10 @@
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#include <linux/if_bridge.h>
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#include <linux/netpoll.h>
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#include <linux/ptp_classify.h>
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+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
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+#include <linux/netfilter.h>
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+#include <net/netfilter/nf_flow_table.h>
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+#endif
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#include "dsa_priv.h"
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@@ -1224,6 +1228,27 @@ static struct devlink_port *dsa_slave_ge
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return dp->ds->devlink ? &dp->devlink_port : NULL;
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}
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+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
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+static int dsa_flow_offload_check(struct flow_offload_hw_path *path)
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+{
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+ struct net_device *dev = path->dev;
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+ struct dsa_port *dp;
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+
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+ if (!(path->flags & FLOW_OFFLOAD_PATH_ETHERNET))
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+ return -EINVAL;
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+
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+ dp = dsa_slave_to_port(dev);
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+ path->dsa_port = dp->index;
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+ path->dev = dsa_slave_to_master(dev);
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+ path->flags |= FLOW_OFFLOAD_PATH_DSA;
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+
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+ if (path->dev->netdev_ops->ndo_flow_offload_check)
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+ return path->dev->netdev_ops->ndo_flow_offload_check(path);
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+
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+ return 0;
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+}
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+#endif /* CONFIG_NF_FLOW_TABLE */
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+
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static const struct net_device_ops dsa_slave_netdev_ops = {
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.ndo_open = dsa_slave_open,
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.ndo_stop = dsa_slave_close,
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@@ -1248,6 +1273,9 @@ static const struct net_device_ops dsa_s
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.ndo_vlan_rx_add_vid = dsa_slave_vlan_rx_add_vid,
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.ndo_vlan_rx_kill_vid = dsa_slave_vlan_rx_kill_vid,
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.ndo_get_devlink_port = dsa_slave_get_devlink_port,
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+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
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+ .ndo_flow_offload_check = dsa_flow_offload_check,
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+#endif
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};
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static struct device_type dsa_type = {
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