Adding upstream version 9.1.upstream/9.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 143 insertions, 0 deletions

diff --git a/zebra/irdp.h b/zebra/irdp.h
new file mode 100644
index 0000000..4330734
--- /dev/null
+++ b/zebra/irdp.h
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* ICMP Router Discovery Messages
+ * Copyright (C) 1997, 2000 Kunihiro Ishiguro
+ */
+
+/*
+ * This file is modified and completed for the Zebra IRDP implementation
+ * by Robert Olsson, Swedish University of Agricultural Sciences
+ */
+
+#ifndef _IRDP_H
+#define _IRDP_H
+
+#include "lib/vty.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* ICMP Messages */
+#ifndef ICMP_ROUTERADVERT
+#define ICMP_ROUTERADVERT 9
+#endif /* ICMP_ROUTERADVERT */
+
+#ifndef ICMP_ROUTERSOLICIT
+#define ICMP_ROUTERSOLICIT 10
+#endif /* ICMP_ROUTERSOLICT */
+
+/* Multicast groups */
+#ifndef INADDR_ALLHOSTS_GROUP
+#define INADDR_ALLHOSTS_GROUP 0xe0000001U    /* 224.0.0.1 */
+#endif /* INADDR_ALLHOSTS_GROUP */
+
+#ifndef INADDR_ALLRTRS_GROUP
+#define INADDR_ALLRTRS_GROUP  0xe0000002U    /* 224.0.0.2 */
+#endif /* INADDR_ALLRTRS_GROUP */
+
+/* Default irdp packet interval */
+#define IRDP_DEFAULT_INTERVAL 300
+
+/* Router constants from RFC1256 */
+#define MAX_INITIAL_ADVERT_INTERVAL 16
+#define MAX_INITIAL_ADVERTISEMENTS   3
+#define MAX_RESPONSE_DELAY           2
+
+#define IRDP_MAXADVERTINTERVAL 600
+#define IRDP_MINADVERTINTERVAL 450 /* 0.75*600 */
+#define IRDP_LIFETIME         1350 /* 3*450 */
+#define IRDP_PREFERENCE 0
+
+#define ICMP_MINLEN 8
+
+#define IRDP_LAST_ADVERT_MESSAGES 2 /* The last adverts with Holdtime 0 */
+
+#define IRDP_RX_BUF 1500
+
+/*
+     Comments comes from RFC1256 ICMP Router Discovery Messages.
+
+     The IP destination address to be used for multicast Router
+     Advertisements sent from the interface.  The only permissible
+     values are the all-systems multicast address, 224.0.0.1, or the
+     limited-broadcast address, 255.255.255.255.  (The all-systems
+     address is preferred wherever possible, i.e., on any link where
+     all listening hosts support IP multicast.)
+
+     Default: 224.0.0.1 if the router supports IP multicast on the
+     interface, else 255.255.255.255
+
+     The maximum time allowed between sending multicast Router
+     Advertisements from the interface, in seconds.  Must be no less
+     than 4 seconds and no greater than 1800 seconds.
+
+     Default: 600 seconds
+
+     The minimum time allowed between sending unsolicited multicast
+     Router Advertisements from the interface, in seconds.  Must be no
+     less than 3 seconds and no greater than MaxAdvertisementInterval.
+
+     Default: 0.75 * MaxAdvertisementInterval
+
+     The value to be placed in the Lifetime field of Router
+     Advertisements sent from the interface, in seconds.  Must be no
+     less than MaxAdvertisementInterval and no greater than 9000
+     seconds.
+
+     Default: 3 * MaxAdvertisementInterval
+
+     The preferability of the address as a default router address,
+     relative to other router addresses on the same subnet.  A 32-bit,
+     signed, twos-complement integer, with higher values meaning more
+     preferable.  The minimum value (hex 80000000) is used to indicate
+     that the address, even though it may be advertised, is not to be
+     used by neighboring hosts as a default router address.
+
+     Default: 0
+*/
+
+struct irdp_interface {
+	bool started;
+
+	unsigned long MaxAdvertInterval;
+	unsigned long MinAdvertInterval;
+	unsigned long Preference;
+
+	uint32_t flags;
+
+#define IF_ACTIVE               (1<<0) /* ICMP Active */
+#define IF_BROADCAST            (1<<1) /* 255.255.255.255 */
+#define IF_SOLICIT              (1<<2) /* Solicit active */
+#define IF_DEBUG_MESSAGES       (1<<3)
+#define IF_DEBUG_PACKET         (1<<4)
+#define IF_DEBUG_MISC           (1<<5)
+#define IF_SHUTDOWN             (1<<6)
+
+	struct interface *ifp;
+	struct event *t_advertise;
+	unsigned long irdp_sent;
+	uint16_t Lifetime;
+
+	struct list *AdvPrefList;
+};
+
+struct Adv {
+	struct in_addr ip;
+	int pref;
+};
+
+extern void irdp_if_init(void);
+extern int irdp_sock_init(void);
+extern int irdp_config_write(struct vty *, struct interface *);
+extern void irdp_send_thread(struct event *t_advert);
+extern void irdp_advert_off(struct interface *ifp);
+extern void process_solicit(struct interface *ifp);
+extern void irdp_read_raw(struct event *r);
+extern void send_packet(struct interface *ifp, struct stream *s, uint32_t dst,
+			struct prefix *p, uint32_t ttl);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _IRDP_H */