1 files changed, 136 insertions, 0 deletions
diff --git a/src/libsystemd-network/sd-radv.c b/src/libsystemd-network/sd-radv.c
new file mode 100644
index 0000000000..54f126e0f6
--- /dev/null
+++ b/src/libsystemd-network/sd-radv.c
@@ -0,0 +1,136 @@
+/***
+  This file is part of systemd.
+
+  Copyright (C) 2017 Intel Corporation. All rights reserved.
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <netinet/icmp6.h>
+#include <netinet/in.h>
+
+#include "sd-radv.h"
+
+#include "alloc-util.h"
+#include "fd-util.h"
+#include "icmp6-util.h"
+#include "in-addr-util.h"
+#include "radv-internal.h"
+#include "socket-util.h"
+#include "string-util.h"
+#include "util.h"
+
+_public_ int sd_radv_prefix_new(sd_radv_prefix **ret) {
+        _cleanup_(sd_radv_prefix_unrefp) sd_radv_prefix *p = NULL;
+
+        assert_return(ret, -EINVAL);
+
+        p = new0(sd_radv_prefix, 1);
+        if (!p)
+                return -ENOMEM;
+
+        p->n_ref = 1;
+
+        p->opt.type = ND_OPT_PREFIX_INFORMATION;
+        p->opt.length = (sizeof(p->opt) - 1) /8 + 1;
+
+        p->opt.prefixlen = 64;
+
+        /* RFC 4861, Section 6.2.1 */
+        SET_FLAG(p->opt.flags, ND_OPT_PI_FLAG_ONLINK, true);
+        SET_FLAG(p->opt.flags, ND_OPT_PI_FLAG_AUTO, true);
+        p->opt.preferred_lifetime = htobe32(604800);
+        p->opt.valid_lifetime = htobe32(2592000);
+
+        *ret = p;
+        p = NULL;
+
+        return 0;
+}
+
+_public_ sd_radv_prefix *sd_radv_prefix_ref(sd_radv_prefix *p) {
+        if (!p)
+                return NULL;
+
+        assert(p->n_ref > 0);
+        p->n_ref++;
+
+        return p;
+}
+
+_public_ sd_radv_prefix *sd_radv_prefix_unref(sd_radv_prefix *p) {
+        if (!p)
+                return NULL;
+
+        assert(p->n_ref > 0);
+        p->n_ref--;
+
+        if (p->n_ref > 0)
+                return NULL;
+
+        return mfree(p);
+}
+
+_public_ int sd_radv_prefix_set_prefix(sd_radv_prefix *p, struct in6_addr *in6_addr,
+                                       unsigned char prefixlen) {
+        assert_return(p, -EINVAL);
+        assert_return(in6_addr, -EINVAL);
+
+        if (prefixlen < 3 || prefixlen > 128)
+                return -EINVAL;
+
+        if (prefixlen > 64)
+                /* unusual but allowed, log it */
+                log_radv("Unusual prefix length %d greater than 64", prefixlen);
+
+        p->opt.in6_addr = *in6_addr;
+        p->opt.prefixlen = prefixlen;
+
+        return 0;
+}
+
+_public_ int sd_radv_prefix_set_onlink(sd_radv_prefix *p, int onlink) {
+        assert_return(p, -EINVAL);
+
+        SET_FLAG(p->opt.flags, ND_OPT_PI_FLAG_ONLINK, onlink);
+
+        return 0;
+}
+
+_public_ int sd_radv_prefix_set_address_autoconfiguration(sd_radv_prefix *p,
+                                                          int address_autoconfiguration) {
+        assert_return(p, -EINVAL);
+
+        SET_FLAG(p->opt.flags, ND_OPT_PI_FLAG_AUTO, address_autoconfiguration);
+
+        return 0;
+}
+
+_public_ int sd_radv_prefix_set_valid_lifetime(sd_radv_prefix *p,
+                                               uint32_t valid_lifetime) {
+        assert_return(p, -EINVAL);
+
+        p->opt.valid_lifetime = htobe32(valid_lifetime);
+
+        return 0;
+}
+
+_public_ int sd_radv_prefix_set_preferred_lifetime(sd_radv_prefix *p,
+                                                   uint32_t preferred_lifetime) {
+        assert_return(p, -EINVAL);
+
+        p->opt.preferred_lifetime = htobe32(preferred_lifetime);
+
+        return 0;
+}