From 95a9a5ba0219a4d4237fb39703bfa58626c6fe72 Mon Sep 17 00:00:00 2001 From: YOSHIFUJI Hideaki Date: Mon, 20 Mar 2006 16:55:51 -0800 Subject: [PATCH] [IPV6]: ROUTE: Split up rt6_cow() for future changes. Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- net/ipv6/route.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index e0d3ad02ff..e885570698 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -401,10 +401,9 @@ int ip6_ins_rt(struct rt6_info *rt, struct nlmsghdr *nlh, with dst->error set to errno value. */ -static struct rt6_info *rt6_cow(struct rt6_info *ort, struct in6_addr *daddr, - struct in6_addr *saddr, struct netlink_skb_parms *req) +static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort, struct in6_addr *daddr, + struct in6_addr *saddr) { - int err; struct rt6_info *rt; /* @@ -435,18 +434,29 @@ static struct rt6_info *rt6_cow(struct rt6_info *ort, struct in6_addr *daddr, rt->rt6i_nexthop = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_gateway); - dst_hold(&rt->u.dst); + } - err = ip6_ins_rt(rt, NULL, NULL, req); - if (err == 0) - return rt; + return rt; +} - rt->u.dst.error = err; +static struct rt6_info *rt6_cow(struct rt6_info *ort, struct in6_addr *daddr, + struct in6_addr *saddr, struct netlink_skb_parms *req) +{ + struct rt6_info *rt = rt6_alloc_cow(ort, daddr, saddr); + int err; - return rt; + if (!rt) { + dst_hold(&ip6_null_entry.u.dst); + return &ip6_null_entry; } - dst_hold(&ip6_null_entry.u.dst); - return &ip6_null_entry; + + dst_hold(&rt->u.dst); + + err = ip6_ins_rt(rt, NULL, NULL, req); + if (err) + rt->u.dst.error = err; + + return rt; } #define BACKTRACK() \ -- 2.39.5