libnetlink: added ip6addr_add_peer function

2 files changed, 35 insertions, 0 deletions

diff --git a/accel-pppd/libnetlink/iputils.c b/accel-pppd/libnetlink/iputils.c
index 601b8954..93716330 100644
--- a/accel-pppd/libnetlink/iputils.c
+++ b/accel-pppd/libnetlink/iputils.c
@@ -639,6 +639,40 @@ int __export ip6addr_add(int ifindex, struct in6_addr *addr, int prefix_len)
 	return r;
 }
 
+int __export ip6addr_add_peer(int ifindex, struct in6_addr *addr, struct in6_addr *peer)
+{
+	struct ipaddr_req {
+		struct nlmsghdr n;
+		struct ifaddrmsg i;
+		char buf[4096];
+	} req;
+	struct rtnl_handle *rth = net->rtnl_get();
+	int r = 0;
+
+	if (!rth)
+		return -1;
+
+	memset(&req, 0, sizeof(req) - 4096);
+
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
+	req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE;
+	req.n.nlmsg_type = RTM_NEWADDR;
+	req.i.ifa_family = AF_INET6;
+	req.i.ifa_index = ifindex;
+	req.i.ifa_prefixlen = 128;
+	req.i.ifa_flags = IFA_F_NODAD;
+
+	addattr_l(&req.n, sizeof(req), IFA_LOCAL, addr, 16);
+	addattr_l(&req.n, sizeof(req), IFA_ADDRESS, peer, 16);
+
+	if (rtnl_talk(rth, &req.n, 0, 0, NULL, NULL, NULL, 0) < 0)
+		r = -1;
+
+	net->rtnl_put(rth);
+
+	return r;
+}
+
 int __export ip6addr_del(int ifindex, struct in6_addr *addr, int prefix_len)
 {
 	struct ipaddr_req {
diff --git a/accel-pppd/libnetlink/iputils.h b/accel-pppd/libnetlink/iputils.h
index 9bdc93da..3211cfb7 100644
--- a/accel-pppd/libnetlink/iputils.h
+++ b/accel-pppd/libnetlink/iputils.h
@@ -25,6 +25,7 @@ in_addr_t iproute_get(in_addr_t dst, in_addr_t *gw);
 int ip6route_add(int ifindex, struct in6_addr *dst, int prefix_len, int proto);
 int ip6route_del(int ifindex, struct in6_addr *dst, int prefix_len);
 int ip6addr_add(int ifindex, struct in6_addr *addr, int prefix_len);
+int ip6addr_add_peer(int ifindex, struct in6_addr *addr, struct in6_addr *peer_addr);
 int ip6addr_del(int ifindex, struct in6_addr *addr, int prefix_len);
 
 int iprule_add(uint32_t addr, int table);