* PDU processing
*
* Copyright (C) 2001,2002 Sampo Saaristo
- * Tampere University of Technology
+ * Tampere University of Technology
* Institute of Communications Engineering
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public Licenseas published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public Licenseas published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
- * This program 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
+ * This program 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; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * 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_ISIS_PDU_H
#define _ZEBRA_ISIS_PDU_H
+#include "isisd/isis_tx_queue.h"
+
+#ifdef __SUNPRO_C
+#pragma pack(1)
+#endif
+
/*
* ISO 9542 - 7.5,7.6
*
* +-------+-------+-------+-------+-------+-------+-------+-------+
*/
-struct esis_fixed_hdr
-{
- u_char idrp;
- u_char length;
- u_char version;
- u_char id_len;
- u_char pdu_type;
- u_int16_t holdtime;
- u_int16_t checksum;
-} __attribute__((packed));
+struct esis_fixed_hdr {
+ uint8_t idrp;
+ uint8_t length;
+ uint8_t version;
+ uint8_t id_len;
+ uint8_t pdu_type;
+ uint16_t holdtime;
+ uint16_t checksum;
+} __attribute__((packed));
#define ESIS_FIXED_HDR_LEN 9
#define ISH_PDU 4
#define RD_PDU 5
-/*
- * IS to IS Fixed Header
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | Intradomain Routeing Protocol Discriminator |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | Length Indicator |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | Version/Protocol ID extension |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | R | R | R | PDU Type |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | Version |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | Reserved |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | Maximum Area Addresses |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- */
-
-struct isis_fixed_hdr
-{
- u_char idrp;
- u_char length;
- u_char version1;
- u_char id_len;
- u_char pdu_type;
- u_char version2;
- u_char reserved;
- u_char max_area_addrs;
-};
-
#define ISIS_FIXED_HDR_LEN 8
/*
* +-------+-------+-------+-------+-------+-------+-------+-------+
* | Reserved | Circuit Type | 1
* +-------+-------+-------+-------+-------+-------+-------+-------+
- * + Source ID + id_len
+ * + Source ID + id_len
* +-------+-------+-------+-------+-------+-------+-------+-------+
- * | Holding Time | 2
+ * | Holding Time | 2
* +-------+-------+-------+-------+-------+-------+-------+-------+
- * | PDU Lenght | 2
+ * | PDU Length | 2
* +-------+-------+-------+-------+-------+-------+-------+-------+
* | R | Priority | 1
* +-------+-------+-------+-------+-------+-------+-------+-------+
* +-------+-------+-------+-------+-------+-------+-------+-------+
*/
struct isis_lan_hello_hdr {
- u_char circuit_t;
- u_char source_id[ISIS_SYS_ID_LEN];
- u_int16_t hold_time;
- u_int16_t pdu_len;
- u_char prio;
- u_char lan_id[ISIS_SYS_ID_LEN + 1];
-} __attribute__((packed));
+ uint8_t circuit_t;
+ uint8_t source_id[ISIS_SYS_ID_LEN];
+ uint16_t hold_time;
+ uint16_t pdu_len;
+ uint8_t prio;
+ uint8_t lan_id[ISIS_SYS_ID_LEN + 1];
+} __attribute__((packed));
#define ISIS_LANHELLO_HDRLEN 19
#define P2P_HELLO 17
* +-------+-------+-------+-------+-------+-------+-------+-------+
* | Reserved | Circuit Type | 1
* +-------+-------+-------+-------+-------+-------+-------+-------+
- * + Source ID + id_len
+ * + Source ID + id_len
* +-------+-------+-------+-------+-------+-------+-------+-------+
- * + Holding Time + 2
+ * + Holding Time + 2
* +-------+-------+-------+-------+-------+-------+-------+-------+
- * + PDU Lenght + 2
+ * + PDU Length + 2
* +-------+-------+-------+-------+-------+-------+-------+-------+
* | Local Circuit ID | 1
* +-------+-------+-------+-------+-------+-------+-------+-------+
*/
struct isis_p2p_hello_hdr {
- u_char circuit_t;
- u_char source_id[ISIS_SYS_ID_LEN];
- u_int16_t hold_time;
- u_int16_t pdu_len;
- u_char local_id;
+ uint8_t circuit_t;
+ uint8_t source_id[ISIS_SYS_ID_LEN];
+ uint16_t hold_time;
+ uint16_t pdu_len;
+ uint8_t local_id;
} __attribute__((packed));
#define ISIS_P2PHELLO_HDRLEN 12
#define L1_LINK_STATE 18
#define L2_LINK_STATE 20
+#define FS_LINK_STATE 10
+#define L2_CIRCUIT_FLOODING_SCOPE 2
+struct isis_lsp_hdr {
+ uint16_t pdu_len;
+ uint16_t rem_lifetime;
+ uint8_t lsp_id[ISIS_SYS_ID_LEN + 2];
+ uint32_t seqno;
+ uint16_t checksum;
+ uint8_t lsp_bits;
+};
+#define ISIS_LSP_HDR_LEN 19
+
/*
- * L1 and L2 IS to IS link state PDU header
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * + PDU Length + 2
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * + Remaining Lifetime + 2
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | LSP ID | id_len + 2
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * + Sequence Number + 4
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * + Checksum + 2
- * +-------+-------+-------+-------+-------+-------+-------+-------+
- * | P | ATT |LSPDBOL| ISTYPE |
- * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * Since the length field of LSP Entries TLV is one byte long, and each LSP
+ * entry is LSP_ENTRIES_LEN (16) bytes long, the maximum number of LSP entries
+ * can be accomodated in a TLV is
+ * 255 / 16 = 15.
+ *
+ * Therefore, the maximum length of the LSP Entries TLV is
+ * 16 * 15 + 2 (header) = 242 bytes.
*/
-struct isis_link_state_hdr {
- u_int16_t pdu_len;
- u_int16_t rem_lifetime;
- u_char lsp_id[ISIS_SYS_ID_LEN + 2];
- u_int32_t seq_num;
- u_int16_t checksum;
- u_int8_t lsp_bits;
-} __attribute__((packed));
-#define ISIS_LSP_HDR_LEN 19
+#define MAX_LSP_ENTRIES_TLV_SIZE 242
#define L1_COMPLETE_SEQ_NUM 24
#define L2_COMPLETE_SEQ_NUM 25
/*
* L1 and L2 IS to IS complete sequence numbers PDU header
* +-------+-------+-------+-------+-------+-------+-------+-------+
- * + PDU Lenght + 2
+ * + PDU Length + 2
* +-------+-------+-------+-------+-------+-------+-------+-------+
* + Source ID + id_len + 1
* +-------+-------+-------+-------+-------+-------+-------+-------+
* +-------+-------+-------+-------+-------+-------+-------+-------+
*/
struct isis_complete_seqnum_hdr {
- u_int16_t pdu_len;
- u_char source_id[ISIS_SYS_ID_LEN + 1];
- u_char start_lsp_id[ISIS_SYS_ID_LEN + 2];
- u_char stop_lsp_id[ISIS_SYS_ID_LEN + 2];
+ uint16_t pdu_len;
+ uint8_t source_id[ISIS_SYS_ID_LEN + 1];
+ uint8_t start_lsp_id[ISIS_SYS_ID_LEN + 2];
+ uint8_t stop_lsp_id[ISIS_SYS_ID_LEN + 2];
};
#define ISIS_CSNP_HDRLEN 25
* +---------------------------------------------------------------+
*/
struct isis_partial_seqnum_hdr {
- u_int16_t pdu_len;
- u_char source_id[ISIS_SYS_ID_LEN + 1];
+ uint16_t pdu_len;
+ uint8_t source_id[ISIS_SYS_ID_LEN + 1];
};
#define ISIS_PSNP_HDRLEN 9
+#ifdef __SUNPRO_C
+#pragma pack()
+#endif
+
/*
* Function for receiving IS-IS PDUs
*/
-int isis_receive (struct thread *thread);
+int isis_receive(struct thread *thread);
/*
* calling arguments for snp_process ()
#define ISIS_SNP_PSNP_FLAG 0
#define ISIS_SNP_CSNP_FLAG 1
+#define ISIS_AUTH_MD5_SIZE 16U
+
/*
* Sending functions
*/
-int send_lan_l1_hello (struct thread *thread);
-int send_lan_l2_hello (struct thread *thread);
-int send_p2p_hello (struct thread *thread);
-int send_csnp (struct isis_circuit *circuit, int level);
-int send_l1_csnp (struct thread *thread);
-int send_l2_csnp (struct thread *thread);
-int send_l1_psnp (struct thread *thread);
-int send_l2_psnp (struct thread *thread);
-int send_lsp (struct thread *thread);
-int ack_lsp (struct isis_link_state_hdr *hdr,
- struct isis_circuit *circuit, int level);
-void fill_fixed_hdr (struct isis_fixed_hdr *hdr, u_char pdu_type);
-int send_hello (struct isis_circuit *circuit, int level);
-
-
-int authentication_check (struct isis_passwd *one,
- struct isis_passwd *theother);
-
+void send_hello_sched(struct isis_circuit *circuit, int level, long delay);
+int send_csnp(struct isis_circuit *circuit, int level);
+int send_l1_csnp(struct thread *thread);
+int send_l2_csnp(struct thread *thread);
+int send_l1_psnp(struct thread *thread);
+int send_l2_psnp(struct thread *thread);
+void send_lsp(struct isis_circuit *circuit,
+ struct isis_lsp *lsp, enum isis_tx_type tx_type);
+void fill_fixed_hdr(uint8_t pdu_type, struct stream *stream);
+int send_hello(struct isis_circuit *circuit, int level);
+int isis_handle_pdu(struct isis_circuit *circuit, uint8_t *ssnpa);
#endif /* _ZEBRA_ISIS_PDU_H */
-
-
-
-
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