include/net/tc_act/tc_mpls.h

   1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
   2 /* Copyright (C) 2019 Netronome Systems, Inc. */
   3
   4 #ifndef __NET_TC_MPLS_H
   5 #define __NET_TC_MPLS_H
   6
   7 #include <linux/tc_act/tc_mpls.h>
   8 #include <net/act_api.h>
   9
  10 struct tcf_mpls_params {
  11         int tcfm_action;
  12         u32 tcfm_label;
  13         u8 tcfm_tc;
  14         u8 tcfm_ttl;
  15         u8 tcfm_bos;
  16         __be16 tcfm_proto;
  17         struct rcu_head rcu;
  18 };
  19
  20 #define ACT_MPLS_TC_NOT_SET     0xff
  21 #define ACT_MPLS_BOS_NOT_SET    0xff
  22 #define ACT_MPLS_LABEL_NOT_SET  0xffffffff
  23
  24 struct tcf_mpls {
  25         struct tc_action common;
  26         struct tcf_mpls_params __rcu *mpls_p;
  27 };
  28 #define to_mpls(a) ((struct tcf_mpls *)a)
  29
  30 static inline bool is_tcf_mpls(const struct tc_action *a)
  31 {
  32 #ifdef CONFIG_NET_CLS_ACT
  33         if (a->ops && a->ops->id == TCA_ID_MPLS)
  34                 return true;
  35 #endif
  36         return false;
  37 }
  38
  39 static inline u32 tcf_mpls_action(const struct tc_action *a)
  40 {
  41         u32 tcfm_action;
  42
  43         rcu_read_lock();
  44         tcfm_action = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_action;
  45         rcu_read_unlock();
  46
  47         return tcfm_action;
  48 }
  49
  50 static inline __be16 tcf_mpls_proto(const struct tc_action *a)
  51 {
  52         __be16 tcfm_proto;
  53
  54         rcu_read_lock();
  55         tcfm_proto = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_proto;
  56         rcu_read_unlock();
  57
  58         return tcfm_proto;
  59 }
  60
  61 static inline u32 tcf_mpls_label(const struct tc_action *a)
  62 {
  63         u32 tcfm_label;
  64
  65         rcu_read_lock();
  66         tcfm_label = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_label;
  67         rcu_read_unlock();
  68
  69         return tcfm_label;
  70 }
  71
  72 static inline u8 tcf_mpls_tc(const struct tc_action *a)
  73 {
  74         u8 tcfm_tc;
  75
  76         rcu_read_lock();
  77         tcfm_tc = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_tc;
  78         rcu_read_unlock();
  79
  80         return tcfm_tc;
  81 }
  82
  83 static inline u8 tcf_mpls_bos(const struct tc_action *a)
  84 {
  85         u8 tcfm_bos;
  86
  87         rcu_read_lock();
  88         tcfm_bos = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_bos;
  89         rcu_read_unlock();
  90
  91         return tcfm_bos;
  92 }
  93
  94 static inline u8 tcf_mpls_ttl(const struct tc_action *a)
  95 {
  96         u8 tcfm_ttl;
  97
  98         rcu_read_lock();
  99         tcfm_ttl = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_ttl;
 100         rcu_read_unlock();
 101
 102         return tcfm_ttl;
 103 }
 104
 105 #endif /* __NET_TC_MPLS_H */