net/tc_act/tc_mpls.h

0001 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
0002 /* Copyright (C) 2019 Netronome Systems, Inc. */
0003
0004 #ifndef __NET_TC_MPLS_H
0005 #define __NET_TC_MPLS_H
0006
0007 #include <linux/tc_act/tc_mpls.h>
0008 #include <net/act_api.h>
0009
0010 struct tcf_mpls_params {
0011     int tcfm_action;
0012     u32 tcfm_label;
0013     u8 tcfm_tc;
0014     u8 tcfm_ttl;
0015     u8 tcfm_bos;
0016     __be16 tcfm_proto;
0017     struct rcu_head rcu;
0018 };
0019
0020 #define ACT_MPLS_TC_NOT_SET 0xff
0021 #define ACT_MPLS_BOS_NOT_SET    0xff
0022 #define ACT_MPLS_LABEL_NOT_SET  0xffffffff
0023
0024 struct tcf_mpls {
0025     struct tc_action common;
0026     struct tcf_mpls_params __rcu *mpls_p;
0027 };
0028 #define to_mpls(a) ((struct tcf_mpls *)a)
0029
0030 static inline bool is_tcf_mpls(const struct tc_action *a)
0031 {
0032 #ifdef CONFIG_NET_CLS_ACT
0033     if (a->ops && a->ops->id == TCA_ID_MPLS)
0034         return true;
0035 #endif
0036     return false;
0037 }
0038
0039 static inline u32 tcf_mpls_action(const struct tc_action *a)
0040 {
0041     u32 tcfm_action;
0042
0043     rcu_read_lock();
0044     tcfm_action = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_action;
0045     rcu_read_unlock();
0046
0047     return tcfm_action;
0048 }
0049
0050 static inline __be16 tcf_mpls_proto(const struct tc_action *a)
0051 {
0052     __be16 tcfm_proto;
0053
0054     rcu_read_lock();
0055     tcfm_proto = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_proto;
0056     rcu_read_unlock();
0057
0058     return tcfm_proto;
0059 }
0060
0061 static inline u32 tcf_mpls_label(const struct tc_action *a)
0062 {
0063     u32 tcfm_label;
0064
0065     rcu_read_lock();
0066     tcfm_label = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_label;
0067     rcu_read_unlock();
0068
0069     return tcfm_label;
0070 }
0071
0072 static inline u8 tcf_mpls_tc(const struct tc_action *a)
0073 {
0074     u8 tcfm_tc;
0075
0076     rcu_read_lock();
0077     tcfm_tc = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_tc;
0078     rcu_read_unlock();
0079
0080     return tcfm_tc;
0081 }
0082
0083 static inline u8 tcf_mpls_bos(const struct tc_action *a)
0084 {
0085     u8 tcfm_bos;
0086
0087     rcu_read_lock();
0088     tcfm_bos = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_bos;
0089     rcu_read_unlock();
0090
0091     return tcfm_bos;
0092 }
0093
0094 static inline u8 tcf_mpls_ttl(const struct tc_action *a)
0095 {
0096     u8 tcfm_ttl;
0097
0098     rcu_read_lock();
0099     tcfm_ttl = rcu_dereference(to_mpls(a)->mpls_p)->tcfm_ttl;
0100     rcu_read_unlock();
0101
0102     return tcfm_ttl;
0103 }
0104
0105 #endif /* __NET_TC_MPLS_H */