odhcpd: add option for setting preferred lifetime

[project/odhcpd.git] / src / config.c

diff --git a/src/config.c b/src/config.c
index 015a716dd1cf2de877108f1c670927b66045d2aa..78b58550040061ce2c056e94b28d50e554edaace 100644 (file)
--- a/src/config.c
+++ b/src/config.c
@@ -82,6 +82,7 @@ enum {
        IFACE_ATTR_NDPROXY_ROUTING,
        IFACE_ATTR_NDPROXY_SLAVE,
        IFACE_ATTR_PREFIX_FILTER,
+       IFACE_ATTR_PREFERRED_LIFETIME,
        IFACE_ATTR_MAX
 };
 
@@ -130,6 +131,7 @@ static const struct blobmsg_policy iface_attrs[IFACE_ATTR_MAX] = {
        [IFACE_ATTR_NDPROXY_ROUTING] = { .name = "ndproxy_routing", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_NDPROXY_SLAVE] = { .name = "ndproxy_slave", .type = BLOBMSG_TYPE_BOOL },
        [IFACE_ATTR_PREFIX_FILTER] = { .name = "prefix_filter", .type = BLOBMSG_TYPE_STRING },
+       [IFACE_ATTR_PREFERRED_LIFETIME] = { .name = "preferred_lifetime", .type = BLOBMSG_TYPE_STRING },
 };
 
 static const struct uci_blob_param_info iface_attr_info[IFACE_ATTR_MAX] = {
@@ -197,6 +199,7 @@ static void set_interface_defaults(struct interface *iface)
        iface->ndp = MODE_DISABLED;
        iface->learn_routes = 1;
        iface->dhcp_leasetime = 43200;
+       iface->preferred_lifetime = 43200;
        iface->dhcpv4_start.s_addr = htonl(START_DEFAULT);
        iface->dhcpv4_end.s_addr = htonl(START_DEFAULT + LIMIT_DEFAULT - 1);
        iface->dhcpv6_assignall = true;
@@ -525,6 +528,14 @@ int config_parse_interface(void *data, size_t len, const char *name, bool overwr
                iface->dhcp_leasetime = time;
        }
 
+       if ((c = tb[IFACE_ATTR_PREFERRED_LIFETIME])) {
+               double time = parse_leasetime(c);
+               if (time < 0)
+                       goto err;
+
+               iface->preferred_lifetime = time;
+       }
+
        if ((c = tb[IFACE_ATTR_START])) {
                iface->dhcpv4_start.s_addr = htonl(blobmsg_get_u32(c));
                iface->dhcpv4_end.s_addr = htonl(ntohl(iface->dhcpv4_start.s_addr) +