swh:1:snp:32555a3fd8878f019c2ebd6c964bc1edcaeff337
Tip revision: 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 authored by Linus Torvalds on 31 May 2020, 23:49:15 UTC
Linux 5.7
Linux 5.7
Tip revision: 3d77e6a
nf_conntrack_zones.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NF_CONNTRACK_ZONES_H
#define _NF_CONNTRACK_ZONES_H
#include <linux/netfilter/nf_conntrack_zones_common.h>
#include <net/netfilter/nf_conntrack.h>
static inline const struct nf_conntrack_zone *
nf_ct_zone(const struct nf_conn *ct)
{
#ifdef CONFIG_NF_CONNTRACK_ZONES
return &ct->zone;
#else
return &nf_ct_zone_dflt;
#endif
}
static inline const struct nf_conntrack_zone *
nf_ct_zone_init(struct nf_conntrack_zone *zone, u16 id, u8 dir, u8 flags)
{
zone->id = id;
zone->flags = flags;
zone->dir = dir;
return zone;
}
static inline const struct nf_conntrack_zone *
nf_ct_zone_tmpl(const struct nf_conn *tmpl, const struct sk_buff *skb,
struct nf_conntrack_zone *tmp)
{
#ifdef CONFIG_NF_CONNTRACK_ZONES
if (!tmpl)
return &nf_ct_zone_dflt;
if (tmpl->zone.flags & NF_CT_FLAG_MARK)
return nf_ct_zone_init(tmp, skb->mark, tmpl->zone.dir, 0);
#endif
return nf_ct_zone(tmpl);
}
static inline void nf_ct_zone_add(struct nf_conn *ct,
const struct nf_conntrack_zone *zone)
{
#ifdef CONFIG_NF_CONNTRACK_ZONES
ct->zone = *zone;
#endif
}
static inline bool nf_ct_zone_matches_dir(const struct nf_conntrack_zone *zone,
enum ip_conntrack_dir dir)
{
return zone->dir & (1 << dir);
}
static inline u16 nf_ct_zone_id(const struct nf_conntrack_zone *zone,
enum ip_conntrack_dir dir)
{
#ifdef CONFIG_NF_CONNTRACK_ZONES
return nf_ct_zone_matches_dir(zone, dir) ?
zone->id : NF_CT_DEFAULT_ZONE_ID;
#else
return NF_CT_DEFAULT_ZONE_ID;
#endif
}
static inline bool nf_ct_zone_equal(const struct nf_conn *a,
const struct nf_conntrack_zone *b,
enum ip_conntrack_dir dir)
{
#ifdef CONFIG_NF_CONNTRACK_ZONES
return nf_ct_zone_id(nf_ct_zone(a), dir) ==
nf_ct_zone_id(b, dir);
#else
return true;
#endif
}
static inline bool nf_ct_zone_equal_any(const struct nf_conn *a,
const struct nf_conntrack_zone *b)
{
#ifdef CONFIG_NF_CONNTRACK_ZONES
return nf_ct_zone(a)->id == b->id;
#else
return true;
#endif
}
#endif /* _NF_CONNTRACK_ZONES_H */