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/* $OpenBSD: resolver.h,v 1.16 2019/12/08 09:47:50 florian Exp $ */
/*
* Copyright (c) 2018 Florian Obser <florian@openbsd.org>
* Copyright (c) 2004, 2005 Esben Norby <norby@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
enum uw_resolver_state {
DEAD,
UNKNOWN,
RESOLVING,
VALIDATING
};
static const char * const uw_resolver_state_str[] = {
"dead",
"unknown",
"resolving",
"validating"
};
static const int64_t histogram_limits[] = {
10,
20,
40,
60,
80,
100,
200,
400,
600,
800,
1000,
INT64_MAX,
};
struct ctl_resolver_info {
enum uw_resolver_state state;
enum uw_resolver_type type;
int64_t median;
int64_t histogram[nitems(histogram_limits)];
int64_t latest_histogram[nitems(histogram_limits)];
};
struct ctl_forwarder_info {
char ip[INET6_ADDRSTRLEN];
uint32_t if_index;
int src;
};
void resolver(int, int);
int resolver_imsg_compose_main(int, pid_t, void *, uint16_t);
int resolver_imsg_compose_frontend(int, pid_t, void *, uint16_t);
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