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[IPV6]: ROUTE: Add rt6_alloc_clone() for cloning route allocation.

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Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
YOSHIFUJI Hideaki 2006-03-20 16:58:32 -08:00 committed by David S. Miller
parent 76f9edd17d
commit 299d993908
1 changed files with 18 additions and 9 deletions
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27
net/ipv6/route.c
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@ -459,6 +459,21 @@ static struct rt6_info *rt6_cow(struct rt6_info *ort, struct in6_addr *daddr,
return rt;
}
static struct rt6_info *rt6_alloc_clone(struct rt6_info *ort, struct in6_addr *daddr)
{
struct rt6_info *rt = ip6_rt_copy(ort);
if (rt) {
ipv6_addr_copy(&rt->rt6i_dst.addr, daddr);
rt->rt6i_dst.plen = 128;
rt->rt6i_flags |= RTF_CACHE;
if (rt->rt6i_flags & RTF_REJECT)
rt->u.dst.error = ort->u.dst.error;
rt->u.dst.flags |= DST_HOST;
rt->rt6i_nexthop = neigh_clone(ort->rt6i_nexthop);
}
return rt;
}
#define BACKTRACK() \
if (rt == &ip6_null_entry && strict) { \
while ((fn = fn->parent) != NULL) { \
@ -1240,17 +1255,11 @@ void rt6_pmtu_discovery(struct in6_addr *daddr, struct in6_addr *saddr,
ip6_ins_rt(nrt, NULL, NULL, NULL);
} else {
nrt = ip6_rt_copy(rt);
if (nrt == NULL)
nrt = rt6_alloc_clone(rt, daddr);
if (!nrt)
goto out;
ipv6_addr_copy(&nrt->rt6i_dst.addr, daddr);
nrt->rt6i_dst.plen = 128;
nrt->u.dst.flags |= DST_HOST;
nrt->rt6i_nexthop = neigh_clone(rt->rt6i_nexthop);
dst_set_expires(&nrt->u.dst, ip6_rt_mtu_expires);
nrt->rt6i_flags |= RTF_DYNAMIC|RTF_CACHE|RTF_EXPIRES;
if (nrt->rt6i_flags & RTF_REJECT)
nrt->u.dst.error = rt->u.dst.error;
nrt->rt6i_flags |= RTF_DYNAMIC|RTF_EXPIRES;
nrt->u.dst.metrics[RTAX_MTU-1] = pmtu;
if (allfrag)
nrt->u.dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;