Viewing file:  tc_ct.h (2.09 KB) -rw-r--r--
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_TC_CT_H
#define __NET_TC_CT_H
#include <net/act_api.h>
#include <uapi/linux/tc_act/tc_ct.h>
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
#include <net/netfilter/nf_nat.h>
#include <net/netfilter/nf_conntrack_labels.h>
struct tcf_ct_params {
struct nf_conn *tmpl;
u16 zone;
u32 mark;
u32 mark_mask;
u32 labels[NF_CT_LABELS_MAX_SIZE / sizeof(u32)];
u32 labels_mask[NF_CT_LABELS_MAX_SIZE / sizeof(u32)];
struct nf_nat_range2 range;
bool ipv4_range;
u16 ct_action;
struct rcu_head rcu;
struct tcf_ct_flow_table *ct_ft;
struct nf_flowtable *nf_ft;
};
struct tcf_ct {
struct tc_action common;
struct tcf_ct_params __rcu *params;
};
#define to_ct(a) ((struct tcf_ct *)a)
#define to_ct_params(a) \
((struct tcf_ct_params *) \
rcu_dereference_protected(to_ct(a)->params, \
lockdep_is_held(&a->tcfa_lock)))
static inline uint16_t tcf_ct_zone(const struct tc_action *a)
{
return to_ct_params(a)->zone;
}
static inline int tcf_ct_action(const struct tc_action *a)
{
return to_ct_params(a)->ct_action;
}
static inline struct nf_flowtable *tcf_ct_ft(const struct tc_action *a)
{
return to_ct_params(a)->nf_ft;
}
#else
static inline uint16_t tcf_ct_zone(const struct tc_action *a) { return 0; }
static inline int tcf_ct_action(const struct tc_action *a) { return 0; }
static inline struct nf_flowtable *tcf_ct_ft(const struct tc_action *a)
{
return NULL;
}
#endif /* CONFIG_NF_CONNTRACK */
#if IS_ENABLED(CONFIG_NET_ACT_CT)
static inline void
tcf_ct_flow_table_restore_skb(struct sk_buff *skb, unsigned long cookie)
{
enum ip_conntrack_info ctinfo = cookie & NFCT_INFOMASK;
struct nf_conn *ct;
ct = (struct nf_conn *)(cookie & NFCT_PTRMASK);
nf_conntrack_get(&ct->ct_general);
nf_ct_set(skb, ct, ctinfo);
}
#else
static inline void
tcf_ct_flow_table_restore_skb(struct sk_buff *skb, unsigned long cookie) { }
#endif
static inline bool is_tcf_ct(const struct tc_action *a)
{
#if defined(CONFIG_NET_CLS_ACT) && IS_ENABLED(CONFIG_NF_CONNTRACK)
if (a->ops && a->ops->id == TCA_ID_CT)
return true;
#endif
return false;
}
#endif /* __NET_TC_CT_H */
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