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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [net/] [ndisc.h] - Blame information for rev 1774

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1 1275 phoenix
#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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 *      ndisc options
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 */
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#define ND_OPT_SOURCE_LL_ADDR           1
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#define ND_OPT_TARGET_LL_ADDR           2
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#define ND_OPT_PREFIX_INFO              3
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#define ND_OPT_REDIRECT_HDR             4
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#define ND_OPT_MTU                      5
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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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#define ND_MIN_RANDOM_FACTOR            (1/2)
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#define ND_MAX_RANDOM_FACTOR            (3/2)
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#ifdef __KERNEL__
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/icmpv6.h>
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#include <net/neighbour.h>
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#include <asm/atomic.h>
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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 ra_msg {
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        struct icmp6hdr         icmph;
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        __u32                   reachable_time;
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        __u32                   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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} __attribute__((__packed__));
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struct ndisc_options {
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        struct nd_opt_hdr *nd_opt_array[7];
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        struct nd_opt_hdr *nd_opt_piend;
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};
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#define nd_opts_src_lladdr      nd_opt_array[ND_OPT_SOURCE_LL_ADDR]
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#define nd_opts_tgt_lladdr      nd_opt_array[ND_OPT_TARGET_LL_ADDR]
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#define nd_opts_pi              nd_opt_array[ND_OPT_PREFIX_INFO]
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#define nd_opts_pi_end          nd_opt_piend
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#define nd_opts_rh              nd_opt_array[ND_OPT_REDIRECT_HDR]
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#define nd_opts_mtu             nd_opt_array[ND_OPT_MTU]
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extern struct nd_opt_hdr *ndisc_next_option(struct nd_opt_hdr *cur, struct nd_opt_hdr *end);
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extern struct ndisc_options *ndisc_parse_options(u8 *opt, int opt_len, struct ndisc_options *ndopts);
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extern int                      ndisc_init(struct net_proto_family *ops);
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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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                                              struct in6_addr *solicit,
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                                              struct in6_addr *daddr,
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                                              struct in6_addr *saddr);
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extern void                     ndisc_send_rs(struct net_device *dev,
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                                              struct in6_addr *saddr,
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                                              struct in6_addr *daddr);
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extern void                     ndisc_forwarding_on(void);
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extern void                     ndisc_forwarding_off(void);
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extern void                     ndisc_send_redirect(struct sk_buff *skb,
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                                                    struct neighbour *neigh,
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                                                    struct in6_addr *target);
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extern int                      ndisc_mc_map(struct in6_addr *addr, char *buf, struct net_device *dev, int dir);
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struct rt6_info *               dflt_rt_lookup(void);
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/*
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 *      IGMP
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 */
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extern int                      igmp6_init(struct net_proto_family *ops);
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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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extern void                     igmp6_cleanup(void);
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static inline struct neighbour * ndisc_get_neigh(struct net_device *dev, struct in6_addr *addr)
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{
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        if (dev)
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                return __neigh_lookup(&nd_tbl, addr, dev, 1);
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        return NULL;
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}
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#endif /* __KERNEL__ */
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#endif

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