91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/*
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* Copyright (c) 2016, Amir Vadai <amir@vadai.me>
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* Copyright (c) 2016, Mellanox Technologies. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __NET_TC_TUNNEL_KEY_H
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#define __NET_TC_TUNNEL_KEY_H
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#include <net/act_api.h>
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#include <linux/tc_act/tc_tunnel_key.h>
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#include <net/dst_metadata.h>
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struct tcf_tunnel_key_params {
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struct rcu_head rcu;
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int tcft_action;
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struct metadata_dst *tcft_enc_metadata;
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};
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struct tcf_tunnel_key {
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struct tc_action common;
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struct tcf_tunnel_key_params __rcu *params;
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};
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#define to_tunnel_key(a) ((struct tcf_tunnel_key *)a)
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static inline bool is_tcf_tunnel_set(const struct tc_action *a)
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{
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#ifdef CONFIG_NET_CLS_ACT
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struct tcf_tunnel_key *t = to_tunnel_key(a);
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struct tcf_tunnel_key_params *params;
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params = rcu_dereference_protected(t->params,
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lockdep_is_held(&a->tcfa_lock));
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if (a->ops && a->ops->id == TCA_ID_TUNNEL_KEY)
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return params->tcft_action == TCA_TUNNEL_KEY_ACT_SET;
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#endif
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return false;
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}
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static inline bool is_tcf_tunnel_release(const struct tc_action *a)
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{
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#ifdef CONFIG_NET_CLS_ACT
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struct tcf_tunnel_key *t = to_tunnel_key(a);
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struct tcf_tunnel_key_params *params;
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params = rcu_dereference_protected(t->params,
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lockdep_is_held(&a->tcfa_lock));
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if (a->ops && a->ops->id == TCA_ID_TUNNEL_KEY)
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return params->tcft_action == TCA_TUNNEL_KEY_ACT_RELEASE;
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#endif
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return false;
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}
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static inline struct ip_tunnel_info *tcf_tunnel_info(const struct tc_action *a)
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{
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#ifdef CONFIG_NET_CLS_ACT
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struct tcf_tunnel_key *t = to_tunnel_key(a);
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struct tcf_tunnel_key_params *params;
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params = rcu_dereference_protected(t->params,
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lockdep_is_held(&a->tcfa_lock));
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return ¶ms->tcft_enc_metadata->u.tun_info;
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#else
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return NULL;
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#endif
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}
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static inline struct ip_tunnel_info *
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tcf_tunnel_info_copy(const struct tc_action *a)
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{
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#ifdef CONFIG_NET_CLS_ACT
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struct ip_tunnel_info *tun = tcf_tunnel_info(a);
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if (tun) {
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size_t tun_size = sizeof(*tun) + tun->options_len;
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struct ip_tunnel_info *tun_copy = kmemdup(tun, tun_size,
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GFP_ATOMIC);
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return tun_copy;
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}
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#endif
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return NULL;
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}
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#endif /* __NET_TC_TUNNEL_KEY_H */
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