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From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 15 Mar 2018 20:49:58 +0100
Subject: [PATCH] net: 8021q: support hardware flow table offload
Add the VLAN ID and protocol information
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -32,6 +32,10 @@
#include <linux/phy.h>
#include <net/arp.h>
#include <net/switchdev.h>
+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
+#include <linux/netfilter.h>
+#include <net/netfilter/nf_flow_table.h>
+#endif
#include "vlan.h"
#include "vlanproc.h"
@@ -771,6 +775,27 @@ static int vlan_dev_get_iflink(const str
return real_dev->ifindex;
}
+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
+static int vlan_dev_flow_offload_check(struct flow_offload_hw_path *path)
+{
+ struct net_device *dev = path->dev;
+ struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
+
+ if (path->flags & FLOW_OFFLOAD_PATH_VLAN)
+ return -EEXIST;
+
+ path->flags |= FLOW_OFFLOAD_PATH_VLAN;
+ path->vlan_proto = vlan->vlan_proto;
+ path->vlan_id = vlan->vlan_id;
+ path->dev = vlan->real_dev;
+
+ if (vlan->real_dev->netdev_ops->ndo_flow_offload_check)
+ return vlan->real_dev->netdev_ops->ndo_flow_offload_check(path);
+
+ return 0;
+}
+#endif /* CONFIG_NF_FLOW_TABLE */
+
static const struct ethtool_ops vlan_ethtool_ops = {
.get_link_ksettings = vlan_ethtool_get_link_ksettings,
.get_drvinfo = vlan_ethtool_get_drvinfo,
@@ -808,6 +833,9 @@ static const struct net_device_ops vlan_
.ndo_fix_features = vlan_dev_fix_features,
.ndo_get_lock_subclass = vlan_dev_get_lock_subclass,
.ndo_get_iflink = vlan_dev_get_iflink,
+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
+ .ndo_flow_offload_check = vlan_dev_flow_offload_check,
+#endif
};
static void vlan_dev_free(struct net_device *dev)
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