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#ifndef __LINUX_NETLINK_H
#define __LINUX_NETLINK_H
#include <linux/socket.h>
#include <linux/types.h>
#define NETLINK_ROUTE 0
#define NETLINK_UNUSED 1
#define NETLINK_USERSOCK 2
#define NETLINK_FIREWALL 3
#define NETLINK_SOCK_DIAG 4
#define NETLINK_NFLOG 5
#define NETLINK_XFRM 6
#define NETLINK_SELINUX 7
#define NETLINK_ISCSI 8
#define NETLINK_AUDIT 9
#define NETLINK_FIB_LOOKUP 10
#define NETLINK_CONNECTOR 11
#define NETLINK_NETFILTER 12
#define NETLINK_IP6_FW 13
#define NETLINK_DNRTMSG 14
#define NETLINK_KOBJECT_UEVENT 15
#define NETLINK_GENERIC 16
#define NETLINK_SCSITRANSPORT 18
#define NETLINK_ECRYPTFS 19
#define NETLINK_RDMA 20
#define NETLINK_CRYPTO 21
#define NETLINK_INET_DIAG NETLINK_SOCK_DIAG
#define MAX_LINKS 32
struct sockaddr_nl {
__kernel_sa_family_t nl_family;
unsigned short nl_pad;
__u32 nl_pid;
__u32 nl_groups;
};
struct nlmsghdr {
__u32 nlmsg_len;
__u16 nlmsg_type;
__u16 nlmsg_flags;
__u32 nlmsg_seq;
__u32 nlmsg_pid;
};
#define NLM_F_REQUEST 1
#define NLM_F_MULTI 2
#define NLM_F_ACK 4
#define NLM_F_ECHO 8
#define NLM_F_DUMP_INTR 16
#define NLM_F_ROOT 0x100
#define NLM_F_MATCH 0x200
#define NLM_F_ATOMIC 0x400
#define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH)
#define NLM_F_REPLACE 0x100
#define NLM_F_EXCL 0x200
#define NLM_F_CREATE 0x400
#define NLM_F_APPEND 0x800
#define NLMSG_ALIGNTO 4U
#define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
#define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(NLMSG_HDRLEN))
#define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
#define NLMSG_DATA(nlh) ((void*)(((char*)nlh) + NLMSG_LENGTH(0)))
#define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
(struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
#define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \
(nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
(nlh)->nlmsg_len <= (len))
#define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len)))
#define NLMSG_NOOP 0x1
#define NLMSG_ERROR 0x2
#define NLMSG_DONE 0x3
#define NLMSG_OVERRUN 0x4
#define NLMSG_MIN_TYPE 0x10
struct nlmsgerr {
int error;
struct nlmsghdr msg;
};
#define NETLINK_ADD_MEMBERSHIP 1
#define NETLINK_DROP_MEMBERSHIP 2
#define NETLINK_PKTINFO 3
#define NETLINK_BROADCAST_ERROR 4
#define NETLINK_NO_ENOBUFS 5
struct nl_pktinfo {
__u32 group;
};
#define NET_MAJOR 36
enum {
NETLINK_UNCONNECTED = 0,
NETLINK_CONNECTED,
};
struct nlattr {
__u16 nla_len;
__u16 nla_type;
};
#define NLA_F_NESTED (1 << 15)
#define NLA_F_NET_BYTEORDER (1 << 14)
#define NLA_TYPE_MASK ~(NLA_F_NESTED | NLA_F_NET_BYTEORDER)
#define NLA_ALIGNTO 4
#define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
#define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr)))
#ifdef __KERNEL__
#include <linux/capability.h>
#include <linux/skbuff.h>
struct net;
static inline struct nlmsghdr *nlmsg_hdr(const struct sk_buff *skb)
{
return (struct nlmsghdr *)skb->data;
}
struct netlink_skb_parms {
struct ucred creds;
__u32 pid;
__u32 dst_group;
};
#define NETLINK_CB(skb) (*(struct netlink_skb_parms*)&((skb)->cb))
#define NETLINK_CREDS(skb) (&NETLINK_CB((skb)).creds)
extern void netlink_table_grab(void);
extern void netlink_table_ungrab(void);
extern struct sock *netlink_kernel_create(struct net *net,
int unit,unsigned int groups,
void (*input)(struct sk_buff *skb),
struct mutex *cb_mutex,
struct module *module);
extern void netlink_kernel_release(struct sock *sk);
extern int __netlink_change_ngroups(struct sock *sk, unsigned int groups);
extern int netlink_change_ngroups(struct sock *sk, unsigned int groups);
extern void __netlink_clear_multicast_users(struct sock *sk, unsigned int group);
extern void netlink_clear_multicast_users(struct sock *sk, unsigned int group);
extern void netlink_ack(struct sk_buff *in_skb, struct nlmsghdr *nlh, int err);
extern int netlink_has_listeners(struct sock *sk, unsigned int group);
extern int netlink_unicast(struct sock *ssk, struct sk_buff *skb, __u32 pid, int nonblock);
extern int netlink_broadcast(struct sock *ssk, struct sk_buff *skb, __u32 pid,
__u32 group, gfp_t allocation);
extern int netlink_broadcast_filtered(struct sock *ssk, struct sk_buff *skb,
__u32 pid, __u32 group, gfp_t allocation,
int (*filter)(struct sock *dsk, struct sk_buff *skb, void *data),
void *filter_data);
extern int netlink_set_err(struct sock *ssk, __u32 pid, __u32 group, int code);
extern int netlink_register_notifier(struct notifier_block *nb);
extern int netlink_unregister_notifier(struct notifier_block *nb);
struct sock *netlink_getsockbyfilp(struct file *filp);
int netlink_attachskb(struct sock *sk, struct sk_buff *skb,
long *timeo, struct sock *ssk);
void netlink_detachskb(struct sock *sk, struct sk_buff *skb);
int netlink_sendskb(struct sock *sk, struct sk_buff *skb);
#if PAGE_SIZE < 8192UL
#define NLMSG_GOODSIZE SKB_WITH_OVERHEAD(PAGE_SIZE)
#else
#define NLMSG_GOODSIZE SKB_WITH_OVERHEAD(8192UL)
#endif
#define NLMSG_DEFAULT_SIZE (NLMSG_GOODSIZE - NLMSG_HDRLEN)
struct netlink_callback {
struct sk_buff *skb;
const struct nlmsghdr *nlh;
int (*dump)(struct sk_buff * skb,
struct netlink_callback *cb);
int (*done)(struct netlink_callback *cb);
void *data;
u16 family;
u16 min_dump_alloc;
unsigned int prev_seq, seq;
long args[6];
};
struct netlink_notify {
struct net *net;
int pid;
int protocol;
};
struct nlmsghdr *
__nlmsg_put(struct sk_buff *skb, u32 pid, u32 seq, int type, int len, int flags);
#define NLMSG_NEW(skb, pid, seq, type, len, flags) \
({ if (unlikely(skb_tailroom(skb) < (int)NLMSG_SPACE(len))) \
goto nlmsg_failure; \
__nlmsg_put(skb, pid, seq, type, len, flags); })
#define NLMSG_PUT(skb, pid, seq, type, len) \
NLMSG_NEW(skb, pid, seq, type, len, 0)
struct netlink_dump_control {
int (*dump)(struct sk_buff *skb, struct netlink_callback *);
int (*done)(struct netlink_callback*);
void *data;
u16 min_dump_alloc;
};
extern int netlink_dump_start(struct sock *ssk, struct sk_buff *skb,
const struct nlmsghdr *nlh,
struct netlink_dump_control *control);
#define NL_NONROOT_RECV 0x1
#define NL_NONROOT_SEND 0x2
extern void netlink_set_nonroot(int protocol, unsigned flag);
#endif
#endif
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