2a9e950701
These header files are never installed to user consumption, so any __KERNEL__ cpp checks are superfluous. Projects should also not copy these files into their userland utility sources and try to use them there. If they insist on doing so, the onus is on them to sanitize the headers as needed. Signed-off-by: David S. Miller <davem@davemloft.net>
157 lines
3.6 KiB
C
157 lines
3.6 KiB
C
#ifndef _NDISC_H
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#define _NDISC_H
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/*
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* ICMP codes for neighbour discovery messages
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*/
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#define NDISC_ROUTER_SOLICITATION 133
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#define NDISC_ROUTER_ADVERTISEMENT 134
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#define NDISC_NEIGHBOUR_SOLICITATION 135
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#define NDISC_NEIGHBOUR_ADVERTISEMENT 136
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#define NDISC_REDIRECT 137
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/*
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* Router type: cross-layer information from link-layer to
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* IPv6 layer reported by certain link types (e.g., RFC4214).
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*/
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#define NDISC_NODETYPE_UNSPEC 0 /* unspecified (default) */
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#define NDISC_NODETYPE_HOST 1 /* host or unauthorized router */
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#define NDISC_NODETYPE_NODEFAULT 2 /* non-default router */
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#define NDISC_NODETYPE_DEFAULT 3 /* default router */
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/*
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* ndisc options
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*/
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enum {
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__ND_OPT_PREFIX_INFO_END = 0,
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ND_OPT_SOURCE_LL_ADDR = 1, /* RFC2461 */
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ND_OPT_TARGET_LL_ADDR = 2, /* RFC2461 */
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ND_OPT_PREFIX_INFO = 3, /* RFC2461 */
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ND_OPT_REDIRECT_HDR = 4, /* RFC2461 */
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ND_OPT_MTU = 5, /* RFC2461 */
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__ND_OPT_ARRAY_MAX,
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ND_OPT_ROUTE_INFO = 24, /* RFC4191 */
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ND_OPT_RDNSS = 25, /* RFC5006 */
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__ND_OPT_MAX
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};
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#define MAX_RTR_SOLICITATION_DELAY HZ
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#define ND_REACHABLE_TIME (30*HZ)
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#define ND_RETRANS_TIMER HZ
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#include <linux/compiler.h>
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#include <linux/icmpv6.h>
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#include <linux/in6.h>
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#include <linux/types.h>
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#include <net/neighbour.h>
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struct ctl_table;
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struct inet6_dev;
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struct net_device;
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struct net_proto_family;
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struct sk_buff;
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extern struct neigh_table nd_tbl;
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struct nd_msg {
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struct icmp6hdr icmph;
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struct in6_addr target;
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__u8 opt[0];
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};
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struct rs_msg {
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struct icmp6hdr icmph;
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__u8 opt[0];
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};
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struct ra_msg {
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struct icmp6hdr icmph;
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__be32 reachable_time;
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__be32 retrans_timer;
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};
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struct nd_opt_hdr {
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__u8 nd_opt_type;
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__u8 nd_opt_len;
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} __packed;
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extern int ndisc_init(void);
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extern void ndisc_cleanup(void);
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extern int ndisc_rcv(struct sk_buff *skb);
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extern void ndisc_send_ns(struct net_device *dev,
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struct neighbour *neigh,
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const struct in6_addr *solicit,
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const struct in6_addr *daddr,
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const struct in6_addr *saddr);
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extern void ndisc_send_rs(struct net_device *dev,
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const struct in6_addr *saddr,
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const struct in6_addr *daddr);
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extern void ndisc_send_redirect(struct sk_buff *skb,
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struct neighbour *neigh,
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const struct in6_addr *target);
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extern int ndisc_mc_map(const struct in6_addr *addr, char *buf,
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struct net_device *dev, int dir);
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extern struct sk_buff *ndisc_build_skb(struct net_device *dev,
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const struct in6_addr *daddr,
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const struct in6_addr *saddr,
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struct icmp6hdr *icmp6h,
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const struct in6_addr *target,
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int llinfo);
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extern void ndisc_send_skb(struct sk_buff *skb,
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struct net_device *dev,
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struct neighbour *neigh,
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const struct in6_addr *daddr,
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const struct in6_addr *saddr,
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struct icmp6hdr *icmp6h);
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/*
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* IGMP
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*/
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extern int igmp6_init(void);
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extern void igmp6_cleanup(void);
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extern int igmp6_event_query(struct sk_buff *skb);
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extern int igmp6_event_report(struct sk_buff *skb);
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#ifdef CONFIG_SYSCTL
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extern int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl,
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int write,
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void __user *buffer,
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size_t *lenp,
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loff_t *ppos);
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int ndisc_ifinfo_sysctl_strategy(ctl_table *ctl,
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void __user *oldval, size_t __user *oldlenp,
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void __user *newval, size_t newlen);
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#endif
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extern void inet6_ifinfo_notify(int event,
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struct inet6_dev *idev);
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static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, const struct in6_addr *addr)
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{
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if (dev)
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return __neigh_lookup_errno(&nd_tbl, addr, dev);
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return ERR_PTR(-ENODEV);
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}
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#endif
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