[PATCH v4 4/5] netconfig: Install IPv6 default route

[Tim Kourt <tim.a.kourt@linux.intel.com>]

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---
 src/netconfig.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 70 insertions(+), 1 deletion(-)

diff --git a/src/netconfig.c b/src/netconfig.c
index 7d26acb0..129fe518 100644
--- a/src/netconfig.c
+++ b/src/netconfig.c
@@ -289,6 +289,40 @@ proceed:
 	return NULL;
 }
 
+static char *netconfig_ipv6_get_gateway(struct netconfig *netconfig)
+{
+	struct in6_addr in6_addr;
+	char *gateway;
+
+	switch (netconfig->rtm_v6_protocol) {
+	case RTPROT_STATIC:
+		if (!netconfig->active_settings)
+			return NULL;
+
+		gateway = l_settings_get_string(netconfig->active_settings,
+							"IPv6", "gateway");
+
+		if (inet_pton(AF_INET6, gateway, &in6_addr) < 1) {
+			l_error("netconfig: Invalid IPv6 gateway address %s is "
+				"provided in network configuration file.",
+				gateway);
+
+			l_free(gateway);
+
+			return NULL;
+		}
+
+		return gateway;
+
+	case RTPROT_DHCP:
+		/* TODO */
+
+		return NULL;
+	}
+
+	return NULL;
+}
+
 static bool netconfig_ifaddr_match(const void *a, const void *b)
 {
 	const struct netconfig_ifaddr *entry = a;
@@ -606,17 +640,52 @@ done:
 	netconfig_ifaddr_destroy(ifaddr);
 }
 
+static bool netconfig_ipv6_routes_install(struct netconfig *netconfig)
+{
+	L_AUTO_FREE_VAR(char *, gateway) = NULL;
+
+	gateway = netconfig_ipv6_get_gateway(netconfig);
+	if (!gateway) {
+		l_error("netconfig: Failed to obtain gateway from %s.",
+				netconfig->rtm_v6_protocol == RTPROT_STATIC ?
+				"settings file" : "DHCPv6 lease");
+
+		return false;
+	}
+
+	if (!rtnl_route_ipv6_add_gateway(rtnl, netconfig->ifindex, gateway,
+						ROUTE_PRIORITY_OFFSET,
+						netconfig->rtm_v6_protocol,
+						netconfig_route_cmd_cb,
+						NULL, NULL)) {
+		l_error("netconfig: Failed to add route for: %s gateway.",
+								gateway);
+
+		return false;
+	}
+
+	return true;
+}
+
 static void netconfig_ipv6_ifaddr_add_cmd_cb(int error, uint16_t type,
 						const void *data, uint32_t len,
 						void *user_data)
 {
+	struct netconfig *netconfig = user_data;
+
 	if (error && error != -EEXIST) {
 		l_error("netconfig: Failed to add IPv6 address. "
 				"Error %d: %s", error, strerror(-error));
 		return;
 	}
 
-	/* TODO Install routes and DNS */
+	if (!netconfig_ipv6_routes_install(netconfig)) {
+		l_error("netconfig: Failed to install IPv6 routes.");
+
+		return;
+	}
+
+	/* TODO Install DNS */
 }
 
 static void netconfig_install_address(struct netconfig *netconfig,
-- 
2.13.6