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 @@ -14,6 +14,10 @@ #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" @@ -382,6 +386,28 @@ 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, @@ -410,6 +436,9 @@ 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 = {