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6833ae01bc
Base framework for supporting MPLS pseudowires in FRR. A consistent zserv interface is provided so that any client daemon (e.g. ldpd, bgpd) can install/uninstall pseudowires in a standard way. Static pseudowires can also be implemented by using the same interface. When zebra receives a request to install a pseudowire and the installation in the kernel or hardware fails, a notification is sent back to the client daemon and a new install attempt is made every 60 seconds (until it succeeds). Support for external dataplanes is provided by the use of hooks to install/uninstall pseudowires. Signed-off-by: ßingen <bingen@voltanet.io> Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
339 lines
8.1 KiB
C
339 lines
8.1 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2013, 2016 Renato Westphal <renato@openbsd.org>
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* Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
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* Copyright (c) 2004, 2005, 2008 Esben Norby <norby@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* LDP protocol definitions */
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#ifndef _LDP_H_
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#define _LDP_H_
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/* misc */
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#define LDP_VERSION 1
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#define LDP_PORT 646
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#define LDP_MAX_LEN 4096
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/* All Routers on this Subnet group multicast addresses */
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#define AllRouters_v4 "224.0.0.2"
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#define AllRouters_v6 "ff02::2"
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#define LINK_DFLT_HOLDTIME 15
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#define TARGETED_DFLT_HOLDTIME 45
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#define MIN_HOLDTIME 3
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#define MAX_HOLDTIME 0xffff
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#define INFINITE_HOLDTIME 0xffff
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#define DEFAULT_KEEPALIVE 180
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#define MIN_KEEPALIVE 3
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#define MAX_KEEPALIVE 0xffff
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#define KEEPALIVE_PER_PERIOD 3
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#define INIT_FSM_TIMEOUT 15
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#define DEFAULT_HELLO_INTERVAL 5
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#define MIN_HELLO_INTERVAL 1
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#define MAX_HELLO_INTERVAL 0xffff
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#define INIT_DELAY_TMR 15
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#define MAX_DELAY_TMR 120
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#define MIN_PWID_ID 1
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#define MAX_PWID_ID 0xffffffff
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#define DEFAULT_L2VPN_MTU 1500
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#define MIN_L2VPN_MTU 512
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#define MAX_L2VPN_MTU 0xffff
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/* LDP message types */
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#define MSG_TYPE_NOTIFICATION 0x0001
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#define MSG_TYPE_HELLO 0x0100
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#define MSG_TYPE_INIT 0x0200
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#define MSG_TYPE_KEEPALIVE 0x0201
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#define MSG_TYPE_CAPABILITY 0x0202 /* RFC 5561 */
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#define MSG_TYPE_ADDR 0x0300
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#define MSG_TYPE_ADDRWITHDRAW 0x0301
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#define MSG_TYPE_LABELMAPPING 0x0400
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#define MSG_TYPE_LABELREQUEST 0x0401
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#define MSG_TYPE_LABELWITHDRAW 0x0402
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#define MSG_TYPE_LABELRELEASE 0x0403
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#define MSG_TYPE_LABELABORTREQ 0x0404
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/* LDP TLV types */
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#define TLV_TYPE_FEC 0x0100
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#define TLV_TYPE_ADDRLIST 0x0101
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#define TLV_TYPE_HOPCOUNT 0x0103
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#define TLV_TYPE_PATHVECTOR 0x0104
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#define TLV_TYPE_GENERICLABEL 0x0200
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#define TLV_TYPE_ATMLABEL 0x0201
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#define TLV_TYPE_FRLABEL 0x0202
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#define TLV_TYPE_STATUS 0x0300
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#define TLV_TYPE_EXTSTATUS 0x0301
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#define TLV_TYPE_RETURNEDPDU 0x0302
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#define TLV_TYPE_RETURNEDMSG 0x0303
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#define TLV_TYPE_COMMONHELLO 0x0400
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#define TLV_TYPE_IPV4TRANSADDR 0x0401
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#define TLV_TYPE_CONFIG 0x0402
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#define TLV_TYPE_IPV6TRANSADDR 0x0403
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#define TLV_TYPE_COMMONSESSION 0x0500
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#define TLV_TYPE_ATMSESSIONPAR 0x0501
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#define TLV_TYPE_FRSESSION 0x0502
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#define TLV_TYPE_LABELREQUEST 0x0600
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/* RFC 4447 */
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#define TLV_TYPE_MAC_LIST 0x8404
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#define TLV_TYPE_PW_STATUS 0x896A
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#define TLV_TYPE_PW_IF_PARAM 0x096B
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#define TLV_TYPE_PW_GROUP_ID 0x096C
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/* RFC 5561 */
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#define TLV_TYPE_RETURNED_TLVS 0x8304
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#define TLV_TYPE_DYNAMIC_CAP 0x8506
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/* RFC 5918 */
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#define TLV_TYPE_TWCARD_CAP 0x850B
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/* RFC 5919 */
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#define TLV_TYPE_UNOTIF_CAP 0x8603
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/* RFC 7552 */
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#define TLV_TYPE_DUALSTACK 0x8701
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/* LDP header */
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struct ldp_hdr {
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uint16_t version;
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uint16_t length;
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uint32_t lsr_id;
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uint16_t lspace_id;
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} __attribute__ ((packed));
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#define LDP_HDR_SIZE 10 /* actual size of the LDP header */
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#define LDP_HDR_PDU_LEN 6 /* minimum "PDU Length" */
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#define LDP_HDR_DEAD_LEN 4
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/* TLV record */
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struct tlv {
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uint16_t type;
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uint16_t length;
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};
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#define TLV_HDR_SIZE 4
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struct ldp_msg {
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uint16_t type;
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uint16_t length;
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uint32_t id;
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/* Mandatory Parameters */
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/* Optional Parameters */
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} __attribute__ ((packed));
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#define LDP_MSG_SIZE 8 /* minimum size of LDP message */
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#define LDP_MSG_LEN 4 /* minimum "Message Length" */
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#define LDP_MSG_DEAD_LEN 4
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#define UNKNOWN_FLAG 0x8000
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#define FORWARD_FLAG 0xc000
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struct hello_prms_tlv {
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uint16_t type;
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uint16_t length;
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uint16_t holdtime;
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uint16_t flags;
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};
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#define F_HELLO_TARGETED 0x8000
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#define F_HELLO_REQ_TARG 0x4000
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#define F_HELLO_GTSM 0x2000
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struct hello_prms_opt4_tlv {
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uint16_t type;
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uint16_t length;
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uint32_t value;
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};
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struct hello_prms_opt16_tlv {
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uint16_t type;
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uint16_t length;
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uint8_t value[16];
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};
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#define DUAL_STACK_LDPOV4 4
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#define DUAL_STACK_LDPOV6 6
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#define F_HELLO_TLV_RCVD_ADDR 0x01
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#define F_HELLO_TLV_RCVD_CONF 0x02
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#define F_HELLO_TLV_RCVD_DS 0x04
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#define S_SUCCESS 0x00000000
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#define S_BAD_LDP_ID 0x80000001
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#define S_BAD_PROTO_VER 0x80000002
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#define S_BAD_PDU_LEN 0x80000003
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#define S_UNKNOWN_MSG 0x00000004
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#define S_BAD_MSG_LEN 0x80000005
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#define S_UNKNOWN_TLV 0x00000006
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#define S_BAD_TLV_LEN 0x80000007
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#define S_BAD_TLV_VAL 0x80000008
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#define S_HOLDTIME_EXP 0x80000009
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#define S_SHUTDOWN 0x8000000A
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#define S_LOOP_DETECTED 0x0000000B
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#define S_UNKNOWN_FEC 0x0000000C
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#define S_NO_ROUTE 0x0000000D
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#define S_NO_LABEL_RES 0x0000000E
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#define S_AVAILABLE 0x0000000F
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#define S_NO_HELLO 0x80000010
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#define S_PARM_ADV_MODE 0x80000011
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#define S_MAX_PDU_LEN 0x80000012
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#define S_PARM_L_RANGE 0x80000013
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#define S_KEEPALIVE_TMR 0x80000014
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#define S_LAB_REQ_ABRT 0x00000015
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#define S_MISS_MSG 0x00000016
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#define S_UNSUP_ADDR 0x00000017
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#define S_KEEPALIVE_BAD 0x80000018
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#define S_INTERN_ERR 0x80000019
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/* RFC 4447 */
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#define S_ILLEGAL_CBIT 0x00000024
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#define S_WRONG_CBIT 0x00000025
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#define S_INCPT_BITRATE 0x00000026
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#define S_CEP_MISCONF 0x00000027
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#define S_PW_STATUS 0x00000028
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#define S_UNASSIGN_TAI 0x00000029
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#define S_MISCONF_ERR 0x0000002A
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#define S_WITHDRAW_MTHD 0x0000002B
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/* RFC 5561 */
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#define S_UNSSUPORTDCAP 0x0000002E
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/* RFC 5919 */
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#define S_ENDOFLIB 0x0000002F
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/* RFC 7552 */
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#define S_TRANS_MISMTCH 0x80000032
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#define S_DS_NONCMPLNCE 0x80000033
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struct sess_prms_tlv {
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uint16_t type;
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uint16_t length;
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uint16_t proto_version;
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uint16_t keepalive_time;
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uint8_t reserved;
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uint8_t pvlim;
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uint16_t max_pdu_len;
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uint32_t lsr_id;
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uint16_t lspace_id;
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} __attribute__ ((packed));
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#define SESS_PRMS_SIZE 18
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#define SESS_PRMS_LEN 14
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struct status_tlv {
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uint16_t type;
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uint16_t length;
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uint32_t status_code;
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uint32_t msg_id;
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uint16_t msg_type;
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} __attribute__ ((packed));
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#define STATUS_SIZE 14
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#define STATUS_TLV_LEN 10
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#define STATUS_FATAL 0x80000000
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struct capability_tlv {
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uint16_t type;
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uint16_t length;
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uint8_t reserved;
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};
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#define STATE_BIT 0x80
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#define F_CAP_TLV_RCVD_DYNAMIC 0x01
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#define F_CAP_TLV_RCVD_TWCARD 0x02
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#define F_CAP_TLV_RCVD_UNOTIF 0x04
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#define CAP_TLV_DYNAMIC_SIZE 5
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#define CAP_TLV_DYNAMIC_LEN 1
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#define CAP_TLV_TWCARD_SIZE 5
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#define CAP_TLV_TWCARD_LEN 1
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#define CAP_TLV_UNOTIF_SIZE 5
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#define CAP_TLV_UNOTIF_LEN 1
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#define AF_IPV4 0x1
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#define AF_IPV6 0x2
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struct address_list_tlv {
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uint16_t type;
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uint16_t length;
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uint16_t family;
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/* address entries */
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} __attribute__ ((packed));
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#define ADDR_LIST_SIZE 6
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#define FEC_ELM_WCARD_LEN 1
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#define FEC_ELM_PREFIX_MIN_LEN 4
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#define FEC_PWID_ELM_MIN_LEN 8
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#define FEC_PWID_SIZE 4
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#define FEC_ELM_TWCARD_MIN_LEN 3
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#define MAP_TYPE_WILDCARD 0x01
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#define MAP_TYPE_PREFIX 0x02
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#define MAP_TYPE_TYPED_WCARD 0x05
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#define MAP_TYPE_PWID 0x80
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#define MAP_TYPE_GENPWID 0x81
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#define CONTROL_WORD_FLAG 0x8000
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#define DEFAULT_PW_TYPE PW_TYPE_ETHERNET
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#define PW_TWCARD_RESERVED_BIT 0x8000
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/* RFC 4447 Sub-TLV record */
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struct subtlv {
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uint8_t type;
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uint8_t length;
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};
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#define SUBTLV_HDR_SIZE 2
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#define SUBTLV_IFMTU 0x01
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#define SUBTLV_VLANID 0x06
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#define FEC_SUBTLV_IFMTU_SIZE 4
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#define FEC_SUBTLV_VLANID_SIZE 4
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struct label_tlv {
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uint16_t type;
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uint16_t length;
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uint32_t label;
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};
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#define LABEL_TLV_SIZE 8
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#define LABEL_TLV_LEN 4
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struct reqid_tlv {
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uint16_t type;
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uint16_t length;
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uint32_t reqid;
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};
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#define REQID_TLV_SIZE 8
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#define REQID_TLV_LEN 4
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struct pw_status_tlv {
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uint16_t type;
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uint16_t length;
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uint32_t value;
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};
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#define PW_STATUS_TLV_SIZE 8
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#define PW_STATUS_TLV_LEN 4
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#define PW_FORWARDING 0
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#define PW_NOT_FORWARDING (1 << 0)
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#define PW_LOCAL_RX_FAULT (1 << 1)
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#define PW_LOCAL_TX_FAULT (1 << 2)
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#define PW_PSN_RX_FAULT (1 << 3)
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#define PW_PSN_TX_FAULT (1 << 4)
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#define NO_LABEL UINT32_MAX
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#endif /* !_LDP_H_ */
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