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sys/net/route/route_algo.h
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/*- | |||||
* Copyright (c) 2020 | |||||
* Alexander V. Chernikov <melifaro@FreeBSD.org> | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* 3. Neither the name of the University nor the names of its contributors | |||||
* may be used to endorse or promote products derived from this software | |||||
* without specific prior written permission. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
* | |||||
* $FreeBSD$ | |||||
*/ | |||||
struct fib_data; | |||||
struct fib_dp; | |||||
enum flm_op_result { | |||||
FLM_SUCCESS, /* No errors, operation successful */ | |||||
FLM_REBUILD, /* Operation cannot be completed, schedule algorithm rebuild */ | |||||
FLM_ERROR, /* Operation failed, this algo cannot be used */ | |||||
}; | |||||
struct rib_rtable_info { | |||||
uint32_t num_prefixes; | |||||
uint32_t num_nhops; | |||||
uint32_t num_nhgrp; | |||||
}; | |||||
struct flm_lookup_key { | |||||
union { | |||||
const struct in6_addr *addr6; | |||||
struct in_addr addr4; | |||||
}; | |||||
}; | |||||
typedef struct nhop_object *flm_lookup_t(void *algo_data, | |||||
const struct flm_lookup_key key, uint32_t scopeid); | |||||
typedef enum flm_op_result flm_init_t (uint32_t fibnum, struct fib_data *fd, | |||||
void *_old_data, void **new_data); | |||||
typedef void flm_destroy_t(void *data); | |||||
typedef enum flm_op_result flm_dump_t(struct rtentry *rt, void *data); | |||||
typedef enum flm_op_result flm_dump_end_t(void *data, struct fib_dp *dp); | |||||
typedef enum flm_op_result flm_change_t(struct rib_head *rnh, | |||||
struct rib_cmd_info *rc, void *data); | |||||
typedef uint8_t flm_get_pref_t(const struct rib_rtable_info *rinfo); | |||||
struct fib_lookup_module { | |||||
char *flm_name; /* algo name */ | |||||
int flm_family; /* address family this module supports */ | |||||
int flm_refcount; /* # of references */ | |||||
uint32_t flm_flags; /* flags */ | |||||
uint8_t flm_index; /* internal algo index */ | |||||
flm_init_t *flm_init_cb; /* instance init */ | |||||
flm_destroy_t *flm_destroy_cb; /* destroy instance */ | |||||
flm_change_t *flm_change_rib_item_cb;/* routing table change hook */ | |||||
flm_dump_t *flm_dump_rib_item_cb; /* routing table dump cb */ | |||||
flm_dump_end_t *flm_dump_end_cb; /* end of dump */ | |||||
flm_lookup_t *flm_lookup; /* lookup function */ | |||||
flm_get_pref_t *flm_get_pref; /* get algo preference */ | |||||
TAILQ_ENTRY(fib_lookup_module) entries; | |||||
}; | |||||
/* Datapath lookup data */ | |||||
struct fib_dp { | |||||
flm_lookup_t *f; | |||||
void *arg; | |||||
}; | |||||
VNET_DECLARE(struct fib_dp *, inet_dp); | |||||
#define V_inet_dp VNET(inet_dp) | |||||
VNET_DECLARE(struct fib_dp *, inet6_dp); | |||||
#define V_inet6_dp VNET(inet6_dp) | |||||
#define FIB_PRINTF(_l, _fd, _fmt, ...) fib_printf(_l, _fd, __func__, _fmt, ##__VA_ARGS__) | |||||
void fib_printf(int level, struct fib_data *fd, const char *func, char *fmt, ...); | |||||
int fib_module_init(struct fib_lookup_module *flm, uint32_t fibnum, | |||||
int family); | |||||
int fib_module_clone(const struct fib_lookup_module *flm_orig, | |||||
struct fib_lookup_module *flm, bool waitok); | |||||
int fib_module_dumptree(struct fib_lookup_module *flm, | |||||
enum rib_subscription_type subscription_type); | |||||
int fib_module_register(struct fib_lookup_module *flm); | |||||
int fib_module_unregister(struct fib_lookup_module *flm); | |||||
uint32_t fib_get_nhop_idx(struct fib_data *fd, struct nhop_object *nh); | |||||
struct nhop_object **fib_get_nhop_array(struct fib_data *fd); | |||||
void fib_get_rtable_info(struct rib_head *rh, struct rib_rtable_info *rinfo); | |||||
struct rib_head *fib_get_rh(struct fib_data *fd); | |||||