1 files changed, 79 insertions, 0 deletions
diff --git a/src/ipv4ll.h b/src/ipv4ll.h
new file mode 100644
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--- /dev/null
+++ b/src/ipv4ll.h
@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * dhcpcd - DHCP client daemon
+ * Copyright (c) 2006-2021 Roy Marples <roy@marples.name>
+ * All rights reserved
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef IPV4LL_H
+#define IPV4LL_H
+
+#define	LINKLOCAL_ADDR		0xa9fe0000
+#define	LINKLOCAL_MASK		IN_CLASSB_NET
+#define	LINKLOCAL_BCAST		(LINKLOCAL_ADDR | ~LINKLOCAL_MASK)
+
+#ifndef IN_LINKLOCAL
+# define IN_LINKLOCAL(addr) ((addr & IN_CLASSB_NET) == LINKLOCAL_ADDR)
+#endif
+
+#ifdef IPV4LL
+#include "arp.h"
+
+struct ipv4ll_state {
+	struct in_addr pickedaddr;
+	struct ipv4_addr *addr;
+	char randomstate[128];
+	bool seeded;
+	bool down;
+	size_t conflicts;
+#ifndef KERNEL_RFC5227
+	struct arp_state *arp;
+#endif
+};
+
+#define	IPV4LL_STATE(ifp)						       \
+	((struct ipv4ll_state *)(ifp)->if_data[IF_DATA_IPV4LL])
+#define	IPV4LL_CSTATE(ifp)						       \
+	((const struct ipv4ll_state *)(ifp)->if_data[IF_DATA_IPV4LL])
+#define	IPV4LL_STATE_RUNNING(ifp)					       \
+	(IPV4LL_CSTATE((ifp)) && !IPV4LL_CSTATE((ifp))->down &&		       \
+	(IPV4LL_CSTATE((ifp))->addr != NULL))
+
+int ipv4ll_subnetroute(rb_tree_t *, struct interface *);
+int ipv4ll_defaultroute(rb_tree_t *,struct interface *);
+ssize_t ipv4ll_env(FILE *, const char *, const struct interface *);
+void ipv4ll_start(void *);
+void ipv4ll_claimed(void *);
+void ipv4ll_handle_failure(void *);
+struct ipv4_addr *ipv4ll_handleifa(int, struct ipv4_addr *, pid_t pid);
+#ifdef HAVE_ROUTE_METRIC
+int ipv4ll_recvrt(int, const struct rt *);
+#endif
+
+void ipv4ll_reset(struct interface *);
+void ipv4ll_drop(struct interface *);
+void ipv4ll_free(struct interface *);
+#endif
+
+#endif