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From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 15 Mar 2018 20:50:37 +0100
Subject: [PATCH] net: bridge: support hardware flow table offload
Look up the real device and pass it on
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -18,6 +18,10 @@
#include <linux/ethtool.h>
#include <linux/list.h>
#include <linux/netfilter_bridge.h>
+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
+#include <linux/netfilter.h>
+#include <net/netfilter/nf_flow_table.h>
+#endif
#include <linux/uaccess.h>
#include "br_private.h"
@@ -340,6 +344,28 @@ static const struct ethtool_ops br_ethto
.get_link = ethtool_op_get_link,
};
+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
+static int br_flow_offload_check(struct flow_offload_hw_path *path)
+{
+ struct net_device *dev = path->dev;
+ struct net_bridge *br = netdev_priv(dev);
+ struct net_bridge_fdb_entry *dst;
+
+ if (!(path->flags & FLOW_OFFLOAD_PATH_ETHERNET))
+ return -EINVAL;
+
+ dst = br_fdb_find_rcu(br, path->eth_dest, path->vlan_id);
+ if (!dst || !dst->dst)
+ return -ENOENT;
+
+ path->dev = dst->dst->dev;
+ 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 br_netdev_ops = {
.ndo_open = br_dev_open,
.ndo_stop = br_dev_stop,
@@ -367,6 +393,9 @@ static const struct net_device_ops br_ne
.ndo_bridge_setlink = br_setlink,
.ndo_bridge_dellink = br_dellink,
.ndo_features_check = passthru_features_check,
+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
+ .ndo_flow_offload_check = br_flow_offload_check,
+#endif
};
static struct device_type br_type = {
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