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31 * $KAME: in6_rmx.c,v 1.11 2001/07/26 06:53:16 jinmei Exp $
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64 #include <sys/cdefs.h>
65 __FBSDID("$FreeBSD$");
67 #include "opt_mpath.h"
69 #include <sys/param.h>
70 #include <sys/systm.h>
71 #include <sys/kernel.h>
73 #include <sys/queue.h>
74 #include <sys/socket.h>
75 #include <sys/socketvar.h>
77 #include <sys/rwlock.h>
78 #include <sys/syslog.h>
79 #include <sys/callout.h>
82 #include <net/if_var.h>
83 #include <net/route.h>
84 #include <net/route/route_ctl.h>
85 #include <net/route/route_var.h>
86 #include <net/route/nhop.h>
88 #include <netinet/in.h>
89 #include <netinet/ip_var.h>
90 #include <netinet/in_var.h>
92 #include <netinet/ip6.h>
93 #include <netinet6/ip6_var.h>
95 #include <netinet/icmp6.h>
96 #include <netinet6/nd6.h>
98 #include <netinet/tcp.h>
99 #include <netinet/tcp_seq.h>
100 #include <netinet/tcp_timer.h>
101 #include <netinet/tcp_var.h>
104 rib6_preadd(u_int fibnum, const struct sockaddr *addr, const struct sockaddr *mask,
105 struct nhop_object *nh)
113 * inherit interface MTU if not set or
114 * check if MTU is too large.
116 if (nh->nh_mtu == 0) {
117 nh->nh_mtu = IN6_LINKMTU(nh->nh_ifp);
118 } else if (nh->nh_mtu > IN6_LINKMTU(nh->nh_ifp))
119 nh->nh_mtu = IN6_LINKMTU(nh->nh_ifp);
121 /* Ensure that default route nhop has special flag */
122 const struct sockaddr_in6 *mask6 = (const struct sockaddr_in6 *)mask;
123 if ((nhop_get_rtflags(nh) & RTF_HOST) == 0 && mask6 != NULL &&
124 IN6_IS_ADDR_UNSPECIFIED(&mask6->sin6_addr))
125 nh->nh_flags |= NHF_DEFAULT;
127 /* Set nexthop type */
128 if (nhop_get_type(nh) == 0) {
129 if (nh->nh_flags & NHF_GATEWAY)
130 nh_type = NH_TYPE_IPV6_ETHER_NHOP;
132 nh_type = NH_TYPE_IPV6_ETHER_RSLV;
134 nhop_set_type(nh, nh_type);
141 * Initialize our routing tree.
145 in6_inithead(uint32_t fibnum)
148 struct rib_subscription *rs;
150 rh = rt_table_init(offsetof(struct sockaddr_in6, sin6_addr) << 3,
155 rh->rnh_preadd = rib6_preadd;
157 rt_mpath_init_rnh(rh);
160 rs = rib_subscribe_internal(rh, nd6_subscription_cb, NULL,
161 RIB_NOTIFY_IMMEDIATE, true);
162 KASSERT(rs != NULL, ("Unable to subscribe to fib %u\n", fibnum));
169 in6_detachhead(struct rib_head *rh)
172 rt_table_destroy(rh);