diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
---|---|---|
committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /include/net/netfilter/nf_conntrack_timeout.h |
Initial import
Diffstat (limited to 'include/net/netfilter/nf_conntrack_timeout.h')
-rw-r--r-- | include/net/netfilter/nf_conntrack_timeout.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_conntrack_timeout.h b/include/net/netfilter/nf_conntrack_timeout.h new file mode 100644 index 000000000..62308713d --- /dev/null +++ b/include/net/netfilter/nf_conntrack_timeout.h @@ -0,0 +1,98 @@ +#ifndef _NF_CONNTRACK_TIMEOUT_H +#define _NF_CONNTRACK_TIMEOUT_H + +#include <net/net_namespace.h> +#include <linux/netfilter/nf_conntrack_common.h> +#include <linux/netfilter/nf_conntrack_tuple_common.h> +#include <net/netfilter/nf_conntrack.h> +#include <net/netfilter/nf_conntrack_extend.h> + +#define CTNL_TIMEOUT_NAME_MAX 32 + +struct ctnl_timeout { + struct list_head head; + struct rcu_head rcu_head; + atomic_t refcnt; + char name[CTNL_TIMEOUT_NAME_MAX]; + __u16 l3num; + struct nf_conntrack_l4proto *l4proto; + char data[0]; +}; + +struct nf_conn_timeout { + struct ctnl_timeout *timeout; +}; + +#define NF_CT_TIMEOUT_EXT_DATA(__t) (unsigned int *) &((__t)->timeout->data) + +static inline +struct nf_conn_timeout *nf_ct_timeout_find(const struct nf_conn *ct) +{ +#ifdef CONFIG_NF_CONNTRACK_TIMEOUT + return nf_ct_ext_find(ct, NF_CT_EXT_TIMEOUT); +#else + return NULL; +#endif +} + +static inline +struct nf_conn_timeout *nf_ct_timeout_ext_add(struct nf_conn *ct, + struct ctnl_timeout *timeout, + gfp_t gfp) +{ +#ifdef CONFIG_NF_CONNTRACK_TIMEOUT + struct nf_conn_timeout *timeout_ext; + + timeout_ext = nf_ct_ext_add(ct, NF_CT_EXT_TIMEOUT, gfp); + if (timeout_ext == NULL) + return NULL; + + timeout_ext->timeout = timeout; + + return timeout_ext; +#else + return NULL; +#endif +}; + +static inline unsigned int * +nf_ct_timeout_lookup(struct net *net, struct nf_conn *ct, + struct nf_conntrack_l4proto *l4proto) +{ +#ifdef CONFIG_NF_CONNTRACK_TIMEOUT + struct nf_conn_timeout *timeout_ext; + unsigned int *timeouts; + + timeout_ext = nf_ct_timeout_find(ct); + if (timeout_ext) + timeouts = NF_CT_TIMEOUT_EXT_DATA(timeout_ext); + else + timeouts = l4proto->get_timeouts(net); + + return timeouts; +#else + return l4proto->get_timeouts(net); +#endif +} + +#ifdef CONFIG_NF_CONNTRACK_TIMEOUT +int nf_conntrack_timeout_init(void); +void nf_conntrack_timeout_fini(void); +#else +static inline int nf_conntrack_timeout_init(void) +{ + return 0; +} + +static inline void nf_conntrack_timeout_fini(void) +{ + return; +} +#endif /* CONFIG_NF_CONNTRACK_TIMEOUT */ + +#ifdef CONFIG_NF_CONNTRACK_TIMEOUT +extern struct ctnl_timeout *(*nf_ct_timeout_find_get_hook)(const char *name); +extern void (*nf_ct_timeout_put_hook)(struct ctnl_timeout *timeout); +#endif + +#endif /* _NF_CONNTRACK_TIMEOUT_H */ |