projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 5d0aa2cc PM |
1 | #ifndef _NF_CONNTRACK_ZONES_H |
| 2 | #define _NF_CONNTRACK_ZONES_H | |
| 3 | ||
| 62da9865 | 4 | #include <linux/netfilter/nf_conntrack_zones_common.h> |
| 308ac914 DB |
5 | |
| 6 | #if IS_ENABLED(CONFIG_NF_CONNTRACK) | |
| 7 | #include <net/netfilter/nf_conntrack_extend.h> | |
| 8 | ||
| 9 | static inline const struct nf_conntrack_zone * | |
| 10 | nf_ct_zone(const struct nf_conn *ct) | |
| 5d0aa2cc | 11 | { |
| 308ac914 DB |
12 | const struct nf_conntrack_zone *nf_ct_zone = NULL; |
| 13 | ||
| 5d0aa2cc | 14 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
| 5d0aa2cc | 15 | nf_ct_zone = nf_ct_ext_find(ct, NF_CT_EXT_ZONE); |
| 5d0aa2cc | 16 | #endif |
| 308ac914 | 17 | return nf_ct_zone ? nf_ct_zone : &nf_ct_zone_dflt; |
| 5d0aa2cc PM |
18 | } |
| 19 | ||
| 308ac914 | 20 | static inline const struct nf_conntrack_zone * |
| 5e8018fc DB |
21 | nf_ct_zone_init(struct nf_conntrack_zone *zone, u16 id, u8 dir, u8 flags) |
| 22 | { | |
| 23 | zone->id = id; | |
| 24 | zone->flags = flags; | |
| 25 | zone->dir = dir; | |
| 26 | ||
| 27 | return zone; | |
| 28 | } | |
| 29 | ||
| 30 | static inline const struct nf_conntrack_zone * | |
| 31 | nf_ct_zone_tmpl(const struct nf_conn *tmpl, const struct sk_buff *skb, | |
| 32 | struct nf_conntrack_zone *tmp) | |
| 33 | { | |
| 34 | const struct nf_conntrack_zone *zone; | |
| 35 | ||
| 36 | if (!tmpl) | |
| 37 | return &nf_ct_zone_dflt; | |
| 38 | ||
| 39 | zone = nf_ct_zone(tmpl); | |
| 40 | if (zone->flags & NF_CT_FLAG_MARK) | |
| 41 | zone = nf_ct_zone_init(tmp, skb->mark, zone->dir, 0); | |
| 42 | ||
| 43 | return zone; | |
| 44 | } | |
| 45 | ||
| 46 | static inline int nf_ct_zone_add(struct nf_conn *ct, gfp_t flags, | |
| 47 | const struct nf_conntrack_zone *info) | |
| 308ac914 | 48 | { |
| 5e8018fc DB |
49 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
| 50 | struct nf_conntrack_zone *nf_ct_zone; | |
| 51 | ||
| 52 | nf_ct_zone = nf_ct_ext_add(ct, NF_CT_EXT_ZONE, flags); | |
| 53 | if (!nf_ct_zone) | |
| 54 | return -ENOMEM; | |
| 55 | ||
| 56 | nf_ct_zone_init(nf_ct_zone, info->id, info->dir, | |
| 57 | info->flags); | |
| 58 | #endif | |
| 59 | return 0; | |
| 308ac914 DB |
60 | } |
| 61 | ||
| deedb590 DB |
62 | static inline bool nf_ct_zone_matches_dir(const struct nf_conntrack_zone *zone, |
| 63 | enum ip_conntrack_dir dir) | |
| 64 | { | |
| 65 | return zone->dir & (1 << dir); | |
| 66 | } | |
| 67 | ||
| 68 | static inline u16 nf_ct_zone_id(const struct nf_conntrack_zone *zone, | |
| 69 | enum ip_conntrack_dir dir) | |
| 70 | { | |
| 71 | return nf_ct_zone_matches_dir(zone, dir) ? | |
| 72 | zone->id : NF_CT_DEFAULT_ZONE_ID; | |
| 73 | } | |
| 74 | ||
| 308ac914 | 75 | static inline bool nf_ct_zone_equal(const struct nf_conn *a, |
| deedb590 DB |
76 | const struct nf_conntrack_zone *b, |
| 77 | enum ip_conntrack_dir dir) | |
| 78 | { | |
| 79 | return nf_ct_zone_id(nf_ct_zone(a), dir) == | |
| 80 | nf_ct_zone_id(b, dir); | |
| 81 | } | |
| 82 | ||
| 83 | static inline bool nf_ct_zone_equal_any(const struct nf_conn *a, | |
| 84 | const struct nf_conntrack_zone *b) | |
| 308ac914 DB |
85 | { |
| 86 | return nf_ct_zone(a)->id == b->id; | |
| 87 | } | |
| 88 | #endif /* IS_ENABLED(CONFIG_NF_CONNTRACK) */ | |
| 5d0aa2cc | 89 | #endif /* _NF_CONNTRACK_ZONES_H */ |