diff options
Diffstat (limited to 'sys/netinet6/nd6.c')
| -rw-r--r-- | sys/netinet6/nd6.c | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c index a79922b..d0bcc9d 100644 --- a/sys/netinet6/nd6.c +++ b/sys/netinet6/nd6.c @@ -38,6 +38,7 @@ __FBSDID("$FreeBSD$"); #include <sys/param.h> #include <sys/systm.h> #include <sys/callout.h> +#include <sys/random.h> #include <sys/malloc.h> #include <sys/mbuf.h> #include <sys/socket.h> @@ -102,8 +103,12 @@ VNET_DEFINE(int, nd6_maxnudhint) = 0; /* max # of subsequent upper * layer hints */ static VNET_DEFINE(int, nd6_maxqueuelen) = 1; /* max pkts cached in unresolved * ND entries */ + +static VNET_DEFINE(int, nd6_on_link) = 1; /* Send unsolicited ND's on link up */ + #define V_nd6_maxndopt VNET(nd6_maxndopt) #define V_nd6_maxqueuelen VNET(nd6_maxqueuelen) +#define V_nd6_on_link VNET(nd6_on_link) #ifdef ND6_DEBUG VNET_DEFINE(int, nd6_debug) = 1; @@ -112,6 +117,7 @@ VNET_DEFINE(int, nd6_debug) = 0; #endif static eventhandler_tag lle_event_eh; +static eventhandler_tag ifnet_link_event_eh; /* for debugging? */ #if 0 @@ -196,6 +202,13 @@ nd6_lle_event(void *arg __unused, struct llentry *lle, int evt) type == RTM_ADD ? RTF_UP: 0), 0, RT_DEFAULT_FIB); } +static void +nd6_ifnet_link_event(void *arg __unused, struct ifnet *ifp, int linkstate) +{ + + if (linkstate == LINK_STATE_UP && V_nd6_on_link) + nd6_na_output_unsolicited(ifp); +} void nd6_init(void) { @@ -211,9 +224,12 @@ nd6_init(void) nd6_slowtimo, curvnet); nd6_dad_init(); - if (IS_DEFAULT_VNET(curvnet)) + if (IS_DEFAULT_VNET(curvnet)) { lle_event_eh = EVENTHANDLER_REGISTER(lle_event, nd6_lle_event, NULL, EVENTHANDLER_PRI_ANY); + ifnet_link_event_eh = EVENTHANDLER_REGISTER(ifnet_link_event, + nd6_ifnet_link_event, NULL, EVENTHANDLER_PRI_ANY); + } } #ifdef VIMAGE @@ -223,8 +239,10 @@ nd6_destroy() callout_drain(&V_nd6_slowtimo_ch); callout_drain(&V_nd6_timer_ch); - if (IS_DEFAULT_VNET(curvnet)) + if (IS_DEFAULT_VNET(curvnet)) { EVENTHANDLER_DEREGISTER(lle_event, lle_event_eh); + EVENTHANDLER_DEREGISTER(ifnet_link_event, ifnet_link_event_eh); + } } #endif @@ -285,6 +303,8 @@ nd6_ifdetach(struct nd_ifinfo *nd) void nd6_setmtu(struct ifnet *ifp) { + if (ifp->if_afdata[AF_INET6] == NULL) + return; nd6_setmtu0(ifp, ND_IFINFO(ifp)); } @@ -2455,13 +2475,18 @@ static int nd6_sysctl_prlist(SYSCTL_HANDLER_ARGS); SYSCTL_DECL(_net_inet6_icmp6); #endif SYSCTL_NODE(_net_inet6_icmp6, ICMPV6CTL_ND6_DRLIST, nd6_drlist, - CTLFLAG_RD, nd6_sysctl_drlist, ""); + CTLFLAG_RD, nd6_sysctl_drlist, "List default routers"); SYSCTL_NODE(_net_inet6_icmp6, ICMPV6CTL_ND6_PRLIST, nd6_prlist, - CTLFLAG_RD, nd6_sysctl_prlist, ""); + CTLFLAG_RD, nd6_sysctl_prlist, "List prefixes"); SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXQLEN, nd6_maxqueuelen, - CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxqueuelen), 1, ""); + CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxqueuelen), 1, + "Max packets cached in unresolved ND entries"); SYSCTL_INT(_net_inet6_icmp6, OID_AUTO, nd6_gctimer, - CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_gctimer), (60 * 60 * 24), ""); + CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_gctimer), (60 * 60 * 24), + "Interface in seconds between garbage collection passes"); +SYSCTL_INT(_net_inet6_icmp6, OID_AUTO, nd6_on_link, CTLFLAG_VNET | CTLFLAG_RW, + &VNET_NAME(nd6_on_link), 0, + "Send unsolicited neighbor discovery on interface link up events"); static int nd6_sysctl_drlist(SYSCTL_HANDLER_ARGS) |
