include/net/netfilter/nf_conntrack_timestamp.h

Source file repositories/reference/linux-study-clean/include/net/netfilter/nf_conntrack_timestamp.h

File Facts

System
Linux kernel
Corpus path
include/net/netfilter/nf_conntrack_timestamp.h
Extension
.h
Size
1124 bytes
Lines
48
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: implementation source
Status
source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

struct nf_conn_tstamp {
	u_int64_t start;
	u_int64_t stop;
};

static inline
struct nf_conn_tstamp *nf_conn_tstamp_find(const struct nf_conn *ct)
{
#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
	return nf_ct_ext_find(ct, NF_CT_EXT_TSTAMP);
#else
	return NULL;
#endif
}

static inline
struct nf_conn_tstamp *nf_ct_tstamp_ext_add(struct nf_conn *ct, gfp_t gfp)
{
#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
	struct net *net = nf_ct_net(ct);

	if (!net->ct.sysctl_tstamp)
		return NULL;

	return nf_ct_ext_add(ct, NF_CT_EXT_TSTAMP, gfp);
#else
	return NULL;
#endif
};

#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
void nf_conntrack_tstamp_pernet_init(struct net *net);
#else
static inline void nf_conntrack_tstamp_pernet_init(struct net *net) {}
#endif /* CONFIG_NF_CONNTRACK_TIMESTAMP */

#endif /* _NF_CONNTRACK_TSTAMP_H */

Annotation

Implementation Notes