Viewing file:  tc_tunnel_key.h (2 KB) -rw-r--r--
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (c) 2016, Amir Vadai <amir@vadai.me>
* Copyright (c) 2016, Mellanox Technologies. All rights reserved.
*/
#ifndef __NET_TC_TUNNEL_KEY_H
#define __NET_TC_TUNNEL_KEY_H
#include <net/act_api.h>
#include <linux/tc_act/tc_tunnel_key.h>
#include <net/dst_metadata.h>
struct tcf_tunnel_key_params {
struct rcu_head rcu;
int tcft_action;
struct metadata_dst *tcft_enc_metadata;
};
struct tcf_tunnel_key {
struct tc_action common;
struct tcf_tunnel_key_params __rcu *params;
};
#define to_tunnel_key(a) ((struct tcf_tunnel_key *)a)
static inline bool is_tcf_tunnel_set(const struct tc_action *a)
{
#ifdef CONFIG_NET_CLS_ACT
struct tcf_tunnel_key *t = to_tunnel_key(a);
struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
if (a->ops && a->ops->id == TCA_ID_TUNNEL_KEY)
return params->tcft_action == TCA_TUNNEL_KEY_ACT_SET;
#endif
return false;
}
static inline bool is_tcf_tunnel_release(const struct tc_action *a)
{
#ifdef CONFIG_NET_CLS_ACT
struct tcf_tunnel_key *t = to_tunnel_key(a);
struct tcf_tunnel_key_params *params = rtnl_dereference(t->params);
if (a->ops && a->ops->id == TCA_ID_TUNNEL_KEY)
return params->tcft_action == TCA_TUNNEL_KEY_ACT_RELEASE;
#endif
return false;
}
static inline struct ip_tunnel_info *tcf_tunnel_info(const struct tc_action *a)
{
#ifdef CONFIG_NET_CLS_ACT
struct tcf_tunnel_key *t = to_tunnel_key(a);
struct tcf_tunnel_key_params *params;
params = rcu_dereference_protected(t->params,
lockdep_is_held(&a->tcfa_lock));
return ¶ms->tcft_enc_metadata->u.tun_info;
#else
return NULL;
#endif
}
static inline struct ip_tunnel_info *
tcf_tunnel_info_copy(const struct tc_action *a)
{
#ifdef CONFIG_NET_CLS_ACT
struct ip_tunnel_info *tun = tcf_tunnel_info(a);
if (tun) {
size_t tun_size = sizeof(*tun) + tun->options_len;
struct ip_tunnel_info *tun_copy = kmemdup(tun, tun_size,
GFP_ATOMIC);
return tun_copy;
}
#endif
return NULL;
}
#endif /* __NET_TC_TUNNEL_KEY_H */
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