include/net/tc_act/tc_vlan.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
   4  */
   5
   6 #ifndef __NET_TC_VLAN_H
   7 #define __NET_TC_VLAN_H
   8
   9 #include <net/act_api.h>
  10 #include <linux/tc_act/tc_vlan.h>
  11
  12 struct tcf_vlan_params {
  13         int               tcfv_action;
  14         unsigned char     tcfv_push_dst[ETH_ALEN];
  15         unsigned char     tcfv_push_src[ETH_ALEN];
  16         u16               tcfv_push_vid;
  17         __be16            tcfv_push_proto;
  18         u8                tcfv_push_prio;
  19         bool              tcfv_push_prio_exists;
  20         struct rcu_head   rcu;
  21 };
  22
  23 struct tcf_vlan {
  24         struct tc_action        common;
  25         struct tcf_vlan_params __rcu *vlan_p;
  26 };
  27 #define to_vlan(a) ((struct tcf_vlan *)a)
  28
  29 static inline bool is_tcf_vlan(const struct tc_action *a)
  30 {
  31 #ifdef CONFIG_NET_CLS_ACT
  32         if (a->ops && a->ops->id == TCA_ID_VLAN)
  33                 return true;
  34 #endif
  35         return false;
  36 }
  37
  38 static inline u32 tcf_vlan_action(const struct tc_action *a)
  39 {
  40         u32 tcfv_action;
  41
  42         rcu_read_lock();
  43         tcfv_action = rcu_dereference(to_vlan(a)->vlan_p)->tcfv_action;
  44         rcu_read_unlock();
  45
  46         return tcfv_action;
  47 }
  48
  49 static inline u16 tcf_vlan_push_vid(const struct tc_action *a)
  50 {
  51         u16 tcfv_push_vid;
  52
  53         rcu_read_lock();
  54         tcfv_push_vid = rcu_dereference(to_vlan(a)->vlan_p)->tcfv_push_vid;
  55         rcu_read_unlock();
  56
  57         return tcfv_push_vid;
  58 }
  59
  60 static inline __be16 tcf_vlan_push_proto(const struct tc_action *a)
  61 {
  62         __be16 tcfv_push_proto;
  63
  64         rcu_read_lock();
  65         tcfv_push_proto = rcu_dereference(to_vlan(a)->vlan_p)->tcfv_push_proto;
  66         rcu_read_unlock();
  67
  68         return tcfv_push_proto;
  69 }
  70
  71 static inline u8 tcf_vlan_push_prio(const struct tc_action *a)
  72 {
  73         u8 tcfv_push_prio;
  74
  75         rcu_read_lock();
  76         tcfv_push_prio = rcu_dereference(to_vlan(a)->vlan_p)->tcfv_push_prio;
  77         rcu_read_unlock();
  78
  79         return tcfv_push_prio;
  80 }
  81
  82 static inline void tcf_vlan_push_eth(unsigned char *src, unsigned char *dest,
  83                                      const struct tc_action *a)
  84 {
  85         rcu_read_lock();
  86         memcpy(dest, rcu_dereference(to_vlan(a)->vlan_p)->tcfv_push_dst, ETH_ALEN);
  87         memcpy(src, rcu_dereference(to_vlan(a)->vlan_p)->tcfv_push_src, ETH_ALEN);
  88         rcu_read_unlock();
  89 }
  90
  91 #endif /* __NET_TC_VLAN_H */