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         struct metadata_dst     *tcft_enc_metadata;
  22 };
  23
  24 struct tcf_tunnel_key {
  25         struct tc_action              common;
  26         struct tcf_tunnel_key_params __rcu *params;
  27 };
  28
  29 #define to_tunnel_key(a) ((struct tcf_tunnel_key *)a)
  30
  31 static inline bool is_tcf_tunnel_set(const struct tc_action *a)
  32 {
  33 #ifdef CONFIG_NET_CLS_ACT
  34         struct tcf_tunnel_key *t = to_tunnel_key(a);
  35         struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
  36
  37         if (a->ops && a->ops->type == TCA_ACT_TUNNEL_KEY)
  38                 return params->tcft_action == TCA_TUNNEL_KEY_ACT_SET;
  39 #endif
  40         return false;
  41 }
  42
  43 static inline bool is_tcf_tunnel_release(const struct tc_action *a)
  44 {
  45 #ifdef CONFIG_NET_CLS_ACT
  46         struct tcf_tunnel_key *t = to_tunnel_key(a);
  47         struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
  48
  49         if (a->ops && a->ops->type == TCA_ACT_TUNNEL_KEY)
  50                 return params->tcft_action == TCA_TUNNEL_KEY_ACT_RELEASE;
  51 #endif
  52         return false;
  53 }
  54
  55 static inline struct ip_tunnel_info *tcf_tunnel_info(const struct tc_action *a)
  56 {
  57 #ifdef CONFIG_NET_CLS_ACT
  58         struct tcf_tunnel_key *t = to_tunnel_key(a);
  59         struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
  60
  61         return &params->tcft_enc_metadata->u.tun_info;
  62 #else
  63         return NULL;
  64 #endif
  65 }
  66 #endif /* __NET_TC_TUNNEL_KEY_H */