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From: Felix Fietkau <nbd@nbd.name>
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Date: Thu, 15 Mar 2018 20:50:37 +0100
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Subject: [PATCH] net: bridge: support hardware flow table offload
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Look up the real device and pass it on
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/net/bridge/br_device.c
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+++ b/net/bridge/br_device.c
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@@ -18,6 +18,10 @@
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#include <linux/ethtool.h>
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#include <linux/list.h>
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#include <linux/netfilter_bridge.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 <linux/uaccess.h>
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#include "br_private.h"
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@@ -370,6 +374,28 @@ static const struct ethtool_ops br_ethto
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.get_link = ethtool_op_get_link,
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};
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+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
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+static int br_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 net_bridge *br = netdev_priv(dev);
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+ struct net_bridge_fdb_entry *dst;
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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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+ dst = br_fdb_find_rcu(br, path->eth_dest, path->vlan_id);
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+ if (!dst || !dst->dst)
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+ return -ENOENT;
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+
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+ path->dev = dst->dst->dev;
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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 br_netdev_ops = {
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.ndo_open = br_dev_open,
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.ndo_stop = br_dev_stop,
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@@ -397,6 +423,9 @@ static const struct net_device_ops br_ne
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.ndo_bridge_setlink = br_setlink,
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.ndo_bridge_dellink = br_dellink,
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.ndo_features_check = passthru_features_check,
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+#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
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+ .ndo_flow_offload_check = br_flow_offload_check,
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+#endif
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};
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static struct device_type br_type = {
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