Disable new-style tunnel creation for older kernels

Signed-off-by: Steven Barth <steven@midlink.org>

diff --git a/system-linux.c b/system-linux.c
index 2d65cef..2a281cc 100644 (file)
--- a/system-linux.c
+++ b/system-linux.c
@@ -1654,6 +1654,7 @@ static int tunnel_ioctl(const char *name, int cmd, void *p)
        return ioctl(sock_ioctl, cmd, &ifr);
 }
 
+#ifdef IFLA_IPTUN_MAX
 static int system_add_gre_tunnel(const char *name, const char *kind,
                                 const unsigned int link, struct blob_attr **tb, bool v6)
 {
@@ -1796,6 +1797,7 @@ failure:
        nlmsg_free(nlm);
        return ret;
 }
+#endif
 
 static int __system_del_ip_tunnel(const char *name, struct blob_attr **tb)
 {
@@ -1935,6 +1937,7 @@ int system_add_ip_tunnel(const char *name, struct blob_attr *attr)
                        }
                }
 #endif
+#ifdef IFLA_IPTUN_MAX
        } else if (!strcmp(str, "ipip6")) {
                struct nl_msg *nlm = nlmsg_alloc_simple(RTM_NEWLINK,
                                NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_CREATE);
@@ -2045,6 +2048,7 @@ failure:
                return system_add_gre_tunnel(name, "ip6gre", link, tb, true);
        } else if (!strcmp(str, "gretapip6")) {
                return system_add_gre_tunnel(name, "ip6gretap", link, tb, true);
+#endif
        }
        else
                return -EINVAL;