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#ifndef __NET_NETLINK_H
#define __NET_NETLINK_H
#define NET_MAJOR 36 /* Major 18 is reserved for networking */
/* so.... ^^ is this 36? */
/* and the things below... */
#define MAX_LINKS 16 /* 18,0 for route updates, 18,1 for SKIP, 18,2 debug tap 18,3 PPP reserved */
/* 4-7 are psi0-psi3 8 is arpd 9 is ppp */
/* 10 is for IPSEC <John Ioannidis> */
/* 11 IPv6 route updates */
/* 12 is for firewall trapout */
#define MAX_QBYTES 32768 /* Maximum bytes in the queue */
#include <linux/netlink.h>
extern int netlink_attach(int unit, int (*function)(int,struct sk_buff *skb));
extern int netlink_donothing(int, struct sk_buff *skb);
extern void netlink_detach(int unit);
extern int netlink_post(int unit, struct sk_buff *skb);
extern int init_netlink(void);
/*
* skb should fit one page. This choice is good for headerless malloc.
*/
#define NLMSG_GOODSIZE (PAGE_SIZE - ((sizeof(struct sk_buff)+0xF)&~0xF))
#define NLMSG_RECOVERY_TIMEO (HZ/2) /* If deleivery was failed,
retry after */
struct nlmsg_ctl
{
struct timer_list nlmsg_timer;
struct sk_buff *nlmsg_skb; /* Partially built skb */
int nlmsg_unit;
int nlmsg_delay; /* Time to delay skb send*/
int nlmsg_maxsize; /* Maximal message size */
int nlmsg_force; /* post immediately */
unsigned long nlmsg_overrun_start; /* seqno starting lossage*/
unsigned long nlmsg_overrun_end; /* the last lost message */
char nlmsg_overrun; /* overrun flag */
};
void* nlmsg_send(struct nlmsg_ctl*, unsigned long type, int len,
unsigned long seq, unsigned long pid);
void nlmsg_transmit(struct nlmsg_ctl*);
extern __inline__ void nlmsg_ack(struct nlmsg_ctl* ctl, unsigned long seq,
unsigned long pid, int err)
{
int *r;
start_bh_atomic();
r = nlmsg_send(ctl, NLMSG_ACK, sizeof(r), seq, pid);
if (r)
*r = err;
end_bh_atomic();
}
#define NETLINK_ROUTE 0 /* Routing/device hook */
#define NETLINK_SKIP 1 /* Reserved for ENskip */
#define NETLINK_USERSOCK 2 /* Reserved for user mode socket protocols */
#define NETLINK_FIREWALL 3 /* Firewalling hook */
#define NETLINK_PSI 4 /* PSI devices - 4 to 7 */
#define NETLINK_ARPD 8
#define NETLINK_IPSEC 10 /* IPSEC */
#define NETLINK_ROUTE6 11 /* af_inet6 route comm channel */
#define NETLINK_IP6_FW 13
/* Wouldn't this suffice instead of the confusion at the top of
this file? i.e. 3 is firewall or ppp... */
/* #define MAX_LINKS 16 */
#endif
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