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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/include/net/netfilter/nf_conntrack_extend.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/include/net/netfilter/nf_conntrack_extend.h')
-rw-r--r-- | kernel/include/net/netfilter/nf_conntrack_extend.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/kernel/include/net/netfilter/nf_conntrack_extend.h b/kernel/include/net/netfilter/nf_conntrack_extend.h new file mode 100644 index 000000000..55d15049a --- /dev/null +++ b/kernel/include/net/netfilter/nf_conntrack_extend.h @@ -0,0 +1,123 @@ +#ifndef _NF_CONNTRACK_EXTEND_H +#define _NF_CONNTRACK_EXTEND_H + +#include <linux/slab.h> + +#include <net/netfilter/nf_conntrack.h> + +enum nf_ct_ext_id { + NF_CT_EXT_HELPER, +#if defined(CONFIG_NF_NAT) || defined(CONFIG_NF_NAT_MODULE) + NF_CT_EXT_NAT, +#endif + NF_CT_EXT_SEQADJ, + NF_CT_EXT_ACCT, +#ifdef CONFIG_NF_CONNTRACK_EVENTS + NF_CT_EXT_ECACHE, +#endif +#ifdef CONFIG_NF_CONNTRACK_ZONES + NF_CT_EXT_ZONE, +#endif +#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP + NF_CT_EXT_TSTAMP, +#endif +#ifdef CONFIG_NF_CONNTRACK_TIMEOUT + NF_CT_EXT_TIMEOUT, +#endif +#ifdef CONFIG_NF_CONNTRACK_LABELS + NF_CT_EXT_LABELS, +#endif +#if IS_ENABLED(CONFIG_NETFILTER_SYNPROXY) + NF_CT_EXT_SYNPROXY, +#endif + NF_CT_EXT_NUM, +}; + +#define NF_CT_EXT_HELPER_TYPE struct nf_conn_help +#define NF_CT_EXT_NAT_TYPE struct nf_conn_nat +#define NF_CT_EXT_SEQADJ_TYPE struct nf_conn_seqadj +#define NF_CT_EXT_ACCT_TYPE struct nf_conn_acct +#define NF_CT_EXT_ECACHE_TYPE struct nf_conntrack_ecache +#define NF_CT_EXT_ZONE_TYPE struct nf_conntrack_zone +#define NF_CT_EXT_TSTAMP_TYPE struct nf_conn_tstamp +#define NF_CT_EXT_TIMEOUT_TYPE struct nf_conn_timeout +#define NF_CT_EXT_LABELS_TYPE struct nf_conn_labels +#define NF_CT_EXT_SYNPROXY_TYPE struct nf_conn_synproxy + +/* Extensions: optional stuff which isn't permanently in struct. */ +struct nf_ct_ext { + struct rcu_head rcu; + u16 offset[NF_CT_EXT_NUM]; + u16 len; + char data[0]; +}; + +static inline bool __nf_ct_ext_exist(const struct nf_ct_ext *ext, u8 id) +{ + return !!ext->offset[id]; +} + +static inline bool nf_ct_ext_exist(const struct nf_conn *ct, u8 id) +{ + return (ct->ext && __nf_ct_ext_exist(ct->ext, id)); +} + +static inline void *__nf_ct_ext_find(const struct nf_conn *ct, u8 id) +{ + if (!nf_ct_ext_exist(ct, id)) + return NULL; + + return (void *)ct->ext + ct->ext->offset[id]; +} +#define nf_ct_ext_find(ext, id) \ + ((id##_TYPE *)__nf_ct_ext_find((ext), (id))) + +/* Destroy all relationships */ +void __nf_ct_ext_destroy(struct nf_conn *ct); +static inline void nf_ct_ext_destroy(struct nf_conn *ct) +{ + if (ct->ext) + __nf_ct_ext_destroy(ct); +} + +/* Free operation. If you want to free a object referred from private area, + * please implement __nf_ct_ext_free() and call it. + */ +static inline void nf_ct_ext_free(struct nf_conn *ct) +{ + if (ct->ext) + kfree_rcu(ct->ext, rcu); +} + +/* Add this type, returns pointer to data or NULL. */ +void *__nf_ct_ext_add_length(struct nf_conn *ct, enum nf_ct_ext_id id, + size_t var_alloc_len, gfp_t gfp); + +#define nf_ct_ext_add(ct, id, gfp) \ + ((id##_TYPE *)__nf_ct_ext_add_length((ct), (id), 0, (gfp))) +#define nf_ct_ext_add_length(ct, id, len, gfp) \ + ((id##_TYPE *)__nf_ct_ext_add_length((ct), (id), (len), (gfp))) + +#define NF_CT_EXT_F_PREALLOC 0x0001 + +struct nf_ct_ext_type { + /* Destroys relationships (can be NULL). */ + void (*destroy)(struct nf_conn *ct); + /* Called when realloacted (can be NULL). + Contents has already been moved. */ + void (*move)(void *new, void *old); + + enum nf_ct_ext_id id; + + unsigned int flags; + + /* Length and min alignment. */ + u8 len; + u8 align; + /* initial size of nf_ct_ext. */ + u8 alloc_size; +}; + +int nf_ct_extend_register(struct nf_ct_ext_type *type); +void nf_ct_extend_unregister(struct nf_ct_ext_type *type); +#endif /* _NF_CONNTRACK_EXTEND_H */ |