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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109/* SPDX-License-Identifier: GPL-2.0 */#ifndef _NFNETLINK_H#define _NFNETLINK_H
#include <linux/netlink.h>#include <linux/capability.h>#include <net/netlink.h>#include <uapi/linux/netfilter/nfnetlink.h>
struct nfnl_info { struct net *net; struct sock *sk; const struct nlmsghdr *nlh; const struct nfgenmsg *nfmsg; struct netlink_ext_ack *extack;};
enum nfnl_callback_type { NFNL_CB_UNSPEC = 0, NFNL_CB_MUTEX, NFNL_CB_RCU, NFNL_CB_BATCH,};
struct nfnl_callback { int (*call)(struct sk_buff *skb, const struct nfnl_info *info, const struct nlattr * const cda[]); const struct nla_policy *policy; enum nfnl_callback_type type; __u16 attr_count;};
enum nfnl_abort_action { NFNL_ABORT_NONE = 0, NFNL_ABORT_AUTOLOAD, NFNL_ABORT_VALIDATE,};
struct nfnetlink_subsystem { const char *name; __u8 subsys_id; /* nfnetlink subsystem ID */ __u8 cb_count; /* number of callbacks */ const struct nfnl_callback *cb; /* callback for individual types */ struct module *owner; int (*commit)(struct net *net, struct sk_buff *skb); int (*abort)(struct net *net, struct sk_buff *skb, enum nfnl_abort_action action); bool (*valid_genid)(struct net *net, u32 genid);};
int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n);int nfnetlink_subsys_unregister(const struct nfnetlink_subsystem *n);
int nfnetlink_has_listeners(struct net *net, unsigned int group);int nfnetlink_send(struct sk_buff *skb, struct net *net, u32 portid, unsigned int group, int echo, gfp_t flags);int nfnetlink_set_err(struct net *net, u32 portid, u32 group, int error);int nfnetlink_unicast(struct sk_buff *skb, struct net *net, u32 portid);void nfnetlink_broadcast(struct net *net, struct sk_buff *skb, __u32 portid, __u32 group, gfp_t allocation);
static inline u16 nfnl_msg_type(u8 subsys, u8 msg_type){ return subsys << 8 | msg_type;}
static inline void nfnl_fill_hdr(struct nlmsghdr *nlh, u8 family, u8 version, __be16 res_id){ struct nfgenmsg *nfmsg;
nfmsg = nlmsg_data(nlh); nfmsg->nfgen_family = family; nfmsg->version = version; nfmsg->res_id = res_id;}
static inline struct nlmsghdr *nfnl_msg_put(struct sk_buff *skb, u32 portid, u32 seq, int type, int flags, u8 family, u8 version, __be16 res_id){ struct nlmsghdr *nlh;
nlh = nlmsg_put(skb, portid, seq, type, sizeof(struct nfgenmsg), flags); if (!nlh) return NULL;
nfnl_fill_hdr(nlh, family, version, res_id);
return nlh;}
void nfnl_lock(__u8 subsys_id);void nfnl_unlock(__u8 subsys_id);#ifdef CONFIG_PROVE_LOCKINGbool lockdep_nfnl_is_held(__u8 subsys_id);#elsestatic inline bool lockdep_nfnl_is_held(__u8 subsys_id){ return true;}#endif /* CONFIG_PROVE_LOCKING */
#define MODULE_ALIAS_NFNL_SUBSYS(subsys) \ MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys))
#endif /* _NFNETLINK_H */