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	- pathd will act as a client to for the configured igp.
    - pathd must be configured to activate and receive data from igp.
    !pathd config snippet
    segment-routing
     traffic-eng
      mpls-te on
      mpls-te import ospfv2
Signed-off-by: Javier Garcia <javier.garcia@voltanet.io>
		
	
			
		
			
				
	
	
		
			179 lines
		
	
	
		
			5.3 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			179 lines
		
	
	
		
			5.3 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 * Copyright (C) 2020 Volta Networks, Inc
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 *
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 * This program is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License as published by the Free
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 * Software Foundation; either version 2 of the License, or (at your option)
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 * any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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 * more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public License
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 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
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 *
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 */
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#ifndef _PATH_TED_H
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#define _PATH_TED_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <zebra.h>
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#include <stdbool.h>
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#include <debug.h>
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#include "linklist.h"
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#include "log.h"
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#include "command.h"
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#include "stream.h"
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#include "prefix.h"
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#include "zclient.h"
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#include "link_state.h"
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extern struct ted_state ted_state_g;
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#define TIMER_RETRY_DELAY 5 /* Timeout in seconds between ls sync request */
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#define TED_KEY 1
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#define TED_ASN 1
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#define TED_NAME "PATHD TED"
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enum igp_import {
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	IMPORT_UNKNOWN = 0,
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	IMPORT_ISIS,
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	IMPORT_OSPFv2,
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	IMPORT_OSPFv3
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};
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struct ted_state {
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	struct thread_master *main;
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	/* Status of TED: enable or disable */
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	bool enabled;
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	/* From which igp is going to receive data */
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	enum igp_import import;
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	/* The TED itself as in link_state.h */
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	struct ls_ted *ted;
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	/* Timer for ted sync */
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	struct thread *t_link_state_sync;
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	/* Timer for refresh sid in segment list */
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	struct thread *t_segment_list_refresh;
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	/* delay interval in seconds */
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	uint32_t link_state_delay_interval;
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	/* delay interval refresh in seconds */
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	uint32_t segment_list_refresh_interval;
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	struct debug dbg;
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};
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/* Debug flags. */
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#define PATH_TED_DEBUG_BASIC   0x01
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#define PATH_TED_DEBUG(fmt, ...)                                               \
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	do {                                                                   \
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		if (DEBUG_FLAGS_CHECK(&ted_state_g.dbg, PATH_TED_DEBUG_BASIC))  \
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			DEBUGD(&ted_state_g.dbg, "mpls-te: " fmt, ##__VA_ARGS__); \
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	} while (0)
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#define PATH_TED_ERROR(fmt, ...)                                               \
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	do {                                                                   \
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		if (DEBUG_FLAGS_CHECK(&ted_state_g.dbg, PATH_TED_DEBUG_BASIC)) \
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			DEBUGE(&ted_state_g.dbg, "mpls-te: " fmt, ##__VA_ARGS__); \
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	} while (0)
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#define PATH_TED_WARN(fmt, ...)                                                \
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	do {                                                                   \
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		if (DEBUG_FLAGS_CHECK(&ted_state_g.dbg, PATH_TED_DEBUG_BASIC))  \
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			DEBUGW(&ted_state_g.dbg, "mpls-te: " fmt, ##__VA_ARGS__); \
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	} while (0)
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#define PATH_TED_INFO(fmt, ...)                                                \
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	do {                                                                   \
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		if (DEBUG_FLAGS_CHECK(&ted_state_g.dbg, PATH_TED_DEBUG_BASIC)) \
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			DEBUGI(&ted_state_g.dbg, "mpls-te: " fmt, ##__VA_ARGS__); \
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	} while (0)
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/* TED management functions */
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bool path_ted_is_initialized(void);
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void path_ted_init(struct thread_master *master);
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uint32_t path_ted_teardown(void);
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void path_ted_timer_sync_cancel(void);
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void path_ted_timer_refresh_cancel(void);
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int path_ted_segment_list_refresh(void);
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/* TED configuration functions */
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uint32_t path_ted_config_write(struct vty *vty);
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/* TED util functions */
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/* clang-format off */
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#define LS_MSG_EVENT_PRINT(event) event == LS_MSG_EVENT_ADD?"add"\
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		    : event == LS_MSG_EVENT_DELETE?"del"\
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		    : event == LS_MSG_EVENT_UPDATE?"upd"\
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		    : event == LS_MSG_EVENT_SYNC?"syn"\
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		    : event == LS_MSG_EVENT_SYNC?"und" : "none"
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#define LS_MSG_TYPE_PRINT(type) type == LS_MSG_TYPE_NODE?"node"\
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		    : type == LS_MSG_TYPE_ATTRIBUTES?"att"\
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		    : type == LS_MSG_TYPE_PREFIX?"pre" : "none"
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#define LS_IGP_PRINT(type) type == ISIS_L1?"ISIS_L1"\
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		    : type == ISIS_L2?"ISIS_L2"\
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		    : type == DIRECT?"DIRECT"\
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		    : type == STATIC?"STATIC"\
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		    : type == OSPFv2?"OSPFv2" : "none"
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#define PATH_TED_IGP_PRINT(type) type == IMPORT_OSPFv2?"OSPFv2"\
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		    : type == IMPORT_OSPFv3?"OSPFv3"\
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		    : type == IMPORT_ISIS?"ISIS" : "none"
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/* clang-format on */
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uint32_t path_ted_get_current_igp(uint32_t);
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/* TED Query functions */
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/*
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 * Type of queries from draft-ietf-spring-segment-routing-policy-07 for types
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 * f,c,e
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 */
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/**
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 * Search for sid based in prefix and optional algo
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 *
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 * @param prefix	Net prefix to resolv
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 * @param algo		Algorithm for link state
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 *
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 * @return		sid of attribute
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 */
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uint32_t path_ted_query_type_c(struct prefix *prefix, uint8_t algo);
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/**
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 * Search for sid based in prefix and interface id
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 *
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 * @param prefix	Net prefix to resolv
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 * @param iface_id	The interface id
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 *
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 * @return		sid of attribute
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 */
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uint32_t path_ted_query_type_e(struct prefix *prefix, uint32_t iface_id);
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/**
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 * Search for sid based in local, remote pair
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 *
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 * @param local		local ip of attribute
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 * @param remote	remote ip of attribute
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 *
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 * @return		sid of attribute
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 */
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uint32_t path_ted_query_type_f(struct ipaddr *local, struct ipaddr *remote);
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/**
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 * Handle the received opaque msg
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 *
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 * @param msg	Holds the ted data
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 *
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 * @return		sid of attribute
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 */
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uint32_t path_ted_rcvd_message(struct ls_message *msg);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _PATH_TED_H */
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