Adding upstream version 8.4.4.upstream/8.4.4upstream

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

1 files changed, 165 insertions, 0 deletions

diff --git a/ospfd/ospf_packet.h b/ospfd/ospf_packet.h
new file mode 100644
index 0000000..cefc9c2
--- /dev/null
+++ b/ospfd/ospf_packet.h
@@ -0,0 +1,165 @@
+/*
+ * OSPF Sending and Receiving OSPF Packets.
+ * Copyright (C) 1999 Toshiaki Takada
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _ZEBRA_OSPF_PACKET_H
+#define _ZEBRA_OSPF_PACKET_H
+
+#define OSPF_HEADER_SIZE         24U
+#define OSPF_AUTH_SIMPLE_SIZE     8U
+#define OSPF_AUTH_MD5_SIZE       16U
+
+#define OSPF_MAX_PACKET_SIZE  65535U   /* includes IP Header size. */
+#define OSPF_HELLO_MIN_SIZE      20U   /* not including neighbors */
+#define OSPF_DB_DESC_MIN_SIZE     8U
+#define OSPF_LS_REQ_MIN_SIZE      0U
+#define OSPF_LS_UPD_MIN_SIZE      4U
+#define OSPF_LS_ACK_MIN_SIZE      0U
+
+#define OSPF_MSG_HELLO 1   /* OSPF Hello Message. */
+#define OSPF_MSG_DB_DESC 2 /* OSPF Database Description Message. */
+#define OSPF_MSG_LS_REQ 3  /* OSPF Link State Request Message. */
+#define OSPF_MSG_LS_UPD 4  /* OSPF Link State Update Message. */
+#define OSPF_MSG_LS_ACK 5  /* OSPF Link State Acknowledgement Message. */
+
+#define OSPF_SEND_PACKET_DIRECT         1
+#define OSPF_SEND_PACKET_INDIRECT       2
+#define OSPF_SEND_PACKET_LOOP           3
+
+#define OSPF_HELLO_REPLY_DELAY          1
+
+/* Return values of functions involved in packet verification, see ospf6d. */
+#define MSG_OK    0
+#define MSG_NG    1
+
+struct ospf_packet {
+	struct ospf_packet *next;
+
+	/* Pointer to data stream. */
+	struct stream *s;
+
+	/* IP destination address. */
+	struct in_addr dst;
+
+	/* OSPF packet length. */
+	uint16_t length;
+};
+
+/* OSPF packet queue structure. */
+struct ospf_fifo {
+	unsigned long count;
+
+	struct ospf_packet *head;
+	struct ospf_packet *tail;
+};
+
+/* OSPF packet header structure. */
+struct ospf_header {
+	uint8_t version;	  /* OSPF Version. */
+	uint8_t type;		  /* Packet Type. */
+	uint16_t length;	  /* Packet Length. */
+	struct in_addr router_id; /* Router ID. */
+	struct in_addr area_id;   /* Area ID. */
+	uint16_t checksum;	/* Check Sum. */
+	uint16_t auth_type;       /* Authentication Type. */
+	/* Authentication Data. */
+	union {
+		/* Simple Authentication. */
+		uint8_t auth_data[OSPF_AUTH_SIMPLE_SIZE];
+		/* Cryptographic Authentication. */
+		struct {
+			uint16_t zero;	 /* Should be 0. */
+			uint8_t key_id;	/* Key ID. */
+			uint8_t auth_data_len; /* Auth Data Length. */
+			uint32_t crypt_seqnum; /* Cryptographic Sequence
+						   Number. */
+		} crypt;
+	} u;
+};
+
+/* OSPF Hello body format. */
+struct ospf_hello {
+	struct in_addr network_mask;
+	uint16_t hello_interval;
+	uint8_t options;
+	uint8_t priority;
+	uint32_t dead_interval;
+	struct in_addr d_router;
+	struct in_addr bd_router;
+	struct in_addr neighbors[1];
+};
+
+/* OSPF Database Description body format. */
+struct ospf_db_desc {
+	uint16_t mtu;
+	uint8_t options;
+	uint8_t flags;
+	uint32_t dd_seqnum;
+};
+
+struct ospf_ls_update {
+	uint32_t num_lsas;
+};
+
+/* Macros. */
+/* XXX Perhaps obsolete; function in ospf_packet.c */
+#define OSPF_PACKET_MAX(oi)     ospf_packet_max (oi)
+
+#define OSPF_OUTPUT_PNT(S)      ((S)->data + (S)->putp)
+#define OSPF_OUTPUT_LENGTH(S)   ((S)->endp)
+
+#define IS_SET_DD_MS(X)         ((X) & OSPF_DD_FLAG_MS)
+#define IS_SET_DD_M(X)          ((X) & OSPF_DD_FLAG_M)
+#define IS_SET_DD_I(X)          ((X) & OSPF_DD_FLAG_I)
+#define IS_SET_DD_ALL(X)        ((X) & OSPF_DD_FLAG_ALL)
+
+/* Prototypes. */
+extern void ospf_packet_free(struct ospf_packet *);
+extern struct ospf_fifo *ospf_fifo_new(void);
+extern void ospf_fifo_push(struct ospf_fifo *, struct ospf_packet *);
+extern struct ospf_packet *ospf_fifo_pop(struct ospf_fifo *);
+extern struct ospf_packet *ospf_fifo_head(struct ospf_fifo *);
+extern void ospf_fifo_flush(struct ospf_fifo *);
+extern void ospf_fifo_free(struct ospf_fifo *);
+
+extern void ospf_read(struct thread *thread);
+extern void ospf_hello_send(struct ospf_interface *);
+extern void ospf_db_desc_send(struct ospf_neighbor *);
+extern void ospf_db_desc_resend(struct ospf_neighbor *);
+extern void ospf_ls_req_send(struct ospf_neighbor *);
+extern void ospf_ls_upd_send_lsa(struct ospf_neighbor *, struct ospf_lsa *,
+				 int);
+extern void ospf_ls_upd_send(struct ospf_neighbor *, struct list *, int, int);
+extern void ospf_ls_ack_send(struct ospf_neighbor *, struct ospf_lsa *);
+extern void ospf_ls_ack_send_delayed(struct ospf_interface *);
+extern void ospf_ls_retransmit(struct ospf_interface *, struct ospf_lsa *);
+extern void ospf_ls_req_event(struct ospf_neighbor *);
+
+extern void ospf_ls_upd_timer(struct thread *thread);
+extern void ospf_ls_ack_timer(struct thread *thread);
+extern void ospf_poll_timer(struct thread *thread);
+extern void ospf_hello_reply_timer(struct thread *thread);
+
+extern const struct message ospf_packet_type_str[];
+extern const size_t ospf_packet_type_str_max;
+
+extern void ospf_proactively_arp(struct ospf_neighbor *);
+
+#endif /* _ZEBRA_OSPF_PACKET_H */