target/linux/generic/pending-4.14/642-net-8021q-support-hardware-flow-table-offload.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Thu, 15 Mar 2018 20:49:58 +0100
   3 Subject: [PATCH] net: 8021q: support hardware flow table offload
   4
   5 Add the VLAN ID and protocol information
   6
   7 Signed-off-by: Felix Fietkau <nbd@nbd.name>
   8 ---
   9
  10 --- a/net/8021q/vlan_dev.c
  11 +++ b/net/8021q/vlan_dev.c
  12 @@ -29,9 +29,11 @@
  13  #include <linux/net_tstamp.h>
  14  #include <linux/etherdevice.h>
  15  #include <linux/ethtool.h>
  16 +#include <linux/netfilter.h>
  17  #include <linux/phy.h>
  18  #include <net/arp.h>
  19  #include <net/switchdev.h>
  20 +#include <net/netfilter/nf_flow_table.h>
  21
  22  #include "vlan.h"
  23  #include "vlanproc.h"
  24 @@ -766,6 +768,25 @@ static int vlan_dev_get_iflink(const str
  25         return real_dev->ifindex;
  26  }
  27
  28 +static int vlan_dev_flow_offload_check(struct flow_offload_hw_path *path)
  29 +{
  30 +       struct net_device *dev = path->dev;
  31 +       struct vlan_dev_priv *vlan = vlan_dev_priv(dev);
  32 +
  33 +       if (path->flags & FLOW_OFFLOAD_PATH_VLAN)
  34 +               return -EEXIST;
  35 +
  36 +       path->flags |= FLOW_OFFLOAD_PATH_VLAN;
  37 +       path->vlan_proto = vlan->vlan_proto;
  38 +       path->vlan_id = vlan->vlan_id;
  39 +       path->dev = vlan->real_dev;
  40 +
  41 +       if (vlan->real_dev->netdev_ops->ndo_flow_offload_check)
  42 +               return vlan->real_dev->netdev_ops->ndo_flow_offload_check(path);
  43 +
  44 +       return 0;
  45 +}
  46 +
  47  static const struct ethtool_ops vlan_ethtool_ops = {
  48         .get_link_ksettings     = vlan_ethtool_get_link_ksettings,
  49         .get_drvinfo            = vlan_ethtool_get_drvinfo,
  50 @@ -803,6 +824,7 @@ static const struct net_device_ops vlan_
  51         .ndo_fix_features       = vlan_dev_fix_features,
  52         .ndo_get_lock_subclass  = vlan_dev_get_lock_subclass,
  53         .ndo_get_iflink         = vlan_dev_get_iflink,
  54 +       .ndo_flow_offload_check = vlan_dev_flow_offload_check,
  55  };
  56
  57  static void vlan_dev_free(struct net_device *dev)