Differential D32811 Diff 97893 sys/netinet6/in6_ifattach.c

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sys/netinet6/in6_ifattach.c

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* XXX multiple link-local address case		* XXX multiple link-local address case
*		*
* altifp - secondary EUI64 source		* altifp - secondary EUI64 source
*/		*/
void		void
in6_ifattach(struct ifnet ifp, struct ifnet altifp)		in6_ifattach(struct ifnet ifp, struct ifnet altifp)
{		{
struct in6_ifaddr *ia;		struct in6_ifaddr *ia;
		struct nd_ifinfo *ndi;

if (ifp->if_afdata[AF_INET6] == NULL)		if ((ndi = nd6_ifinfo(ifp)) == NULL)
return;		return;
/*		/*
* quirks based on interface type		* quirks based on interface type
*/		*/
switch (ifp->if_type) {		switch (ifp->if_type) {
case IFT_STF:		case IFT_STF:
/*		/*
* 6to4 interface is a very special kind of beast.		* 6to4 interface is a very special kind of beast.
* no multicast, no linklocal. RFC2529 specifies how to make		* no multicast, no linklocal. RFC2529 specifies how to make
* linklocals for 6to4 interface, but there's no use and		* linklocals for 6to4 interface, but there's no use and
* it is rather harmful to have one.		* it is rather harmful to have one.
*/		*/
ND_IFINFO(ifp)->flags &= ~ND6_IFF_AUTO_LINKLOCAL;		ndi->flags &= ~ND6_IFF_AUTO_LINKLOCAL;
ND_IFINFO(ifp)->flags \|= ND6_IFF_NO_DAD;		ndi->flags \|= ND6_IFF_NO_DAD;
break;		break;
default:		default:
break;		break;
}		}

/*		/*
* usually, we require multicast capability to the interface		* usually, we require multicast capability to the interface
*/		*/
Show All 14 Lines	if ((ifp->if_flags & IFF_LOOPBACK) != 0) {
ia = in6ifa_ifwithaddr(&in6addr_loopback, 0, false);		ia = in6ifa_ifwithaddr(&in6addr_loopback, 0, false);
if (ia == NULL)		if (ia == NULL)
in6_ifattach_loopback(ifp);		in6_ifattach_loopback(ifp);
}		}

/*		/*
* assign a link-local address, if there's none.		* assign a link-local address, if there's none.
*/		*/
if (!(ND_IFINFO(ifp)->flags & ND6_IFF_IFDISABLED) &&		if ((ndi->flags & ND6_IFF_IFDISABLED) == 0 &&
ND_IFINFO(ifp)->flags & ND6_IFF_AUTO_LINKLOCAL) {		(ndi->flags & ND6_IFF_AUTO_LINKLOCAL) != 0) {
struct epoch_tracker et;		struct epoch_tracker et;

NET_EPOCH_ENTER(et);		NET_EPOCH_ENTER(et);
ia = in6ifa_ifpforlinklocal(ifp, 0);		ia = in6ifa_ifpforlinklocal(ifp, 0);
NET_EPOCH_EXIT(et);		NET_EPOCH_EXIT(et);
if (ia == NULL)		if (ia == NULL)
in6_ifattach_linklocal(ifp, altifp);		in6_ifattach_linklocal(ifp, altifp);
else		else
▲ Show 20 Lines • Show All 64 Lines • ▼ Show 20 Lines	in6_ifdetach_destroy(struct ifnet *ifp)

_in6_ifdetach(ifp, 0);		_in6_ifdetach(ifp, 0);
}		}

int		int
in6_get_tmpifid(struct ifnet ifp, u_int8_t retbuf,		in6_get_tmpifid(struct ifnet ifp, u_int8_t retbuf,
const u_int8_t *baseid, int generate)		const u_int8_t *baseid, int generate)
{		{
		struct nd_ifinfo *ndi = nd6_ifinfo(ifp);
u_int8_t nullbuf[8];		u_int8_t nullbuf[8];
struct nd_ifinfo *ndi = ND_IFINFO(ifp);

		if (ndi == NULL)
		return (ENXIO);

bzero(nullbuf, sizeof(nullbuf));		bzero(nullbuf, sizeof(nullbuf));
if (bcmp(ndi->randomid, nullbuf, sizeof(nullbuf)) == 0) {		if (bcmp(ndi->randomid, nullbuf, sizeof(nullbuf)) == 0) {
/* we've never created a random ID. Create a new one. */		/* we've never created a random ID. Create a new one. */
generate = 1;		generate = 1;
}		}

if (generate) {		if (generate) {
bcopy(baseid, ndi->randomseed1, sizeof(ndi->randomseed1));		bcopy(baseid, ndi->randomseed1, sizeof(ndi->randomseed1));
Show All 18 Lines	in6_tmpaddrtimer(void *arg)

callout_reset(&V_in6_tmpaddrtimer_ch,		callout_reset(&V_in6_tmpaddrtimer_ch,
(V_ip6_temp_preferred_lifetime - V_ip6_desync_factor -		(V_ip6_temp_preferred_lifetime - V_ip6_desync_factor -
V_ip6_temp_regen_advance) * hz, in6_tmpaddrtimer, curvnet);		V_ip6_temp_regen_advance) * hz, in6_tmpaddrtimer, curvnet);

bzero(nullbuf, sizeof(nullbuf));		bzero(nullbuf, sizeof(nullbuf));
NET_EPOCH_ENTER(et);		NET_EPOCH_ENTER(et);
CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {		CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
if (ifp->if_afdata[AF_INET6] == NULL)		if ((ndi = nd6_ifinfo(ifp)) == NULL)
continue;		continue;
ndi = ND_IFINFO(ifp);
if (bcmp(ndi->randomid, nullbuf, sizeof(nullbuf)) != 0) {		if (bcmp(ndi->randomid, nullbuf, sizeof(nullbuf)) != 0) {
/*		/*
* We've been generating a random ID on this interface.		* We've been generating a random ID on this interface.
* Create a new one.		* Create a new one.
*/		*/
(void)generate_tmp_ifid(ndi->randomseed0,		(void)generate_tmp_ifid(ndi->randomseed0,
ndi->randomseed1, ndi->randomid);		ndi->randomseed1, ndi->randomid);
}		}
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