target/linux/generic/pending-5.4/643-net-bridge-support-hardware-flow-table-offload.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Thu, 15 Mar 2018 20:50:37 +0100
   3 Subject: [PATCH] net: bridge: support hardware flow table offload
   4
   5 Look up the real device and pass it on
   6
   7 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   8 ---
   9
  10 --- a/net/bridge/br_device.c
  11 +++ b/net/bridge/br_device.c
  12 @@ -14,6 +14,10 @@
  13  #include <linux/ethtool.h>
  14  #include <linux/list.h>
  15  #include <linux/netfilter_bridge.h>
  16 +#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
  17 +#include <linux/netfilter.h>
  18 +#include <net/netfilter/nf_flow_table.h>
  19 +#endif
  20
  21  #include <linux/uaccess.h>
  22  #include "br_private.h"
  23 @@ -375,6 +379,28 @@ static const struct ethtool_ops br_ethto
  24         .get_link       = ethtool_op_get_link,
  25  };
  26
  27 +#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
  28 +static int br_flow_offload_check(struct flow_offload_hw_path *path)
  29 +{
  30 +       struct net_device *dev = path->dev;
  31 +       struct net_bridge *br = netdev_priv(dev);
  32 +       struct net_bridge_fdb_entry *dst;
  33 +
  34 +       if (!(path->flags & FLOW_OFFLOAD_PATH_ETHERNET))
  35 +               return -EINVAL;
  36 +
  37 +       dst = br_fdb_find_rcu(br, path->eth_dest, path->vlan_id);
  38 +       if (!dst || !dst->dst)
  39 +               return -ENOENT;
  40 +
  41 +       path->dev = dst->dst->dev;
  42 +       if (path->dev->netdev_ops->ndo_flow_offload_check)
  43 +               return path->dev->netdev_ops->ndo_flow_offload_check(path);
  44 +
  45 +       return 0;
  46 +}
  47 +#endif /* CONFIG_NF_FLOW_TABLE */
  48 +
  49  static const struct net_device_ops br_netdev_ops = {
  50         .ndo_open                = br_dev_open,
  51         .ndo_stop                = br_dev_stop,
  52 @@ -403,6 +429,9 @@ static const struct net_device_ops br_ne
  53         .ndo_bridge_setlink      = br_setlink,
  54         .ndo_bridge_dellink      = br_dellink,
  55         .ndo_features_check      = passthru_features_check,
  56 +#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
  57 +       .ndo_flow_offload_check  = br_flow_offload_check,
  58 +#endif
  59  };
  60
  61  static struct device_type br_type = {