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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* STATICd - Segment Routing over IPv6 (SRv6) header
* Copyright (C) 2025 Alibaba Inc.
* Yuqing Zhao
* Lingyu Zhang
*/
#ifndef __STATIC_SRV6_H__
#define __STATIC_SRV6_H__
#include "vrf.h"
#include "srv6.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Attributes for an SRv6 SID */
struct static_srv6_sid_attributes {
/* VRF name */
char vrf_name[VRF_NAMSIZ];
char ifname[IFNAMSIZ];
struct in6_addr nh6;
};
/* Static SRv6 SID */
struct static_srv6_sid {
/* SRv6 SID address */
struct prefix_ipv6 addr;
/* behavior bound to the SRv6 SID */
enum srv6_endpoint_behavior_codepoint behavior;
/* SID attributes */
struct static_srv6_sid_attributes attributes;
/* SRv6 SID flags */
uint8_t flags;
/*
* this SRv6 SID has been allocated by SID Manager
* and can be installed in the zebra RIB
*/
#define STATIC_FLAG_SRV6_SID_VALID (1 << 0)
/* this SRv6 SID has been installed in the zebra RIB */
#define STATIC_FLAG_SRV6_SID_SENT_TO_ZEBRA (1 << 1)
char locator_name[SRV6_LOCNAME_SIZE];
struct static_srv6_locator *locator;
};
struct static_srv6_locator {
char name[SRV6_LOCNAME_SIZE];
struct prefix_ipv6 prefix;
/*
* Bit length of SRv6 locator described in
* draft-ietf-bess-srv6-services-05#section-3.2.1
*/
uint8_t block_bits_length;
uint8_t node_bits_length;
uint8_t function_bits_length;
uint8_t argument_bits_length;
uint8_t flags;
};
/* List of SRv6 SIDs. */
extern struct list *srv6_locators;
extern struct list *srv6_sids;
/*
* Allocate an SRv6 SID object and initialize its fields, SID address and
* behavor.
*/
extern struct static_srv6_sid *static_srv6_sid_alloc(struct prefix_ipv6 *addr);
extern void static_srv6_sid_free(struct static_srv6_sid *sid);
/* Look-up an SRv6 SID in the list of SRv6 SIDs. */
extern struct static_srv6_sid *static_srv6_sid_lookup(struct prefix_ipv6 *sid_addr);
/*
* Remove an SRv6 SID from the zebra RIB (if it was previously installed) and
* release the memory previously allocated for the SID.
*/
extern void static_srv6_sid_del(struct static_srv6_sid *sid);
/* Initialize SRv6 data structures. */
extern void static_srv6_init(void);
/* Clean up all the SRv6 data structures. */
extern void static_srv6_cleanup(void);
/*
* When an interface is enabled in the kernel, go through all the static SRv6 SIDs in
* the system that use this interface and install/remove them in the zebra RIB.
*
* ifp - The interface being enabled
* is_up - Whether the interface is up or down
*/
void static_ifp_srv6_sids_update(struct interface *ifp, bool is_up);
struct static_srv6_locator *static_srv6_locator_alloc(const char *name);
void static_srv6_locator_free(struct static_srv6_locator *locator);
struct static_srv6_locator *static_srv6_locator_lookup(const char *name);
void delete_static_srv6_sid(void *val);
void delete_static_srv6_locator(void *val);
#ifdef __cplusplus
}
#endif
#endif /* __STATIC_SRV6_H__ */
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