include/net/tc_act/tc_tunnel_key.h

   1 /*
   2  * Copyright (c) 2016, Amir Vadai <amir@vadai.me>
   3  * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  */
  10
  11 #ifndef __NET_TC_TUNNEL_KEY_H
  12 #define __NET_TC_TUNNEL_KEY_H
  13
  14 #include <net/act_api.h>
  15 #include <linux/tc_act/tc_tunnel_key.h>
  16 #include <net/dst_metadata.h>
  17
  18 struct tcf_tunnel_key_params {
  19         struct rcu_head         rcu;
  20         int                     tcft_action;
  21         int                     action;
  22         struct metadata_dst     *tcft_enc_metadata;
  23 };
  24
  25 struct tcf_tunnel_key {
  26         struct tc_action              common;
  27         struct tcf_tunnel_key_params __rcu *params;
  28 };
  29
  30 #define to_tunnel_key(a) ((struct tcf_tunnel_key *)a)
  31
  32 static inline bool is_tcf_tunnel_set(const struct tc_action *a)
  33 {
  34 #ifdef CONFIG_NET_CLS_ACT
  35         struct tcf_tunnel_key *t = to_tunnel_key(a);
  36         struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
  37
  38         if (a->ops && a->ops->type == TCA_ACT_TUNNEL_KEY)
  39                 return params->tcft_action == TCA_TUNNEL_KEY_ACT_SET;
  40 #endif
  41         return false;
  42 }
  43
  44 static inline bool is_tcf_tunnel_release(const struct tc_action *a)
  45 {
  46 #ifdef CONFIG_NET_CLS_ACT
  47         struct tcf_tunnel_key *t = to_tunnel_key(a);
  48         struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
  49
  50         if (a->ops && a->ops->type == TCA_ACT_TUNNEL_KEY)
  51                 return params->tcft_action == TCA_TUNNEL_KEY_ACT_RELEASE;
  52 #endif
  53         return false;
  54 }
  55
  56 static inline struct ip_tunnel_info *tcf_tunnel_info(const struct tc_action *a)
  57 {
  58 #ifdef CONFIG_NET_CLS_ACT
  59         struct tcf_tunnel_key *t = to_tunnel_key(a);
  60         struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
  61
  62         return &params->tcft_enc_metadata->u.tun_info;
  63 #else
  64         return NULL;
  65 #endif
  66 }
  67 #endif /* __NET_TC_TUNNEL_KEY_H */