86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/* SPDX-License-Identifier: ISC
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*
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* Copyright (C) 2021 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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* Copyright (C) 2021 Matt Dunwoodie <ncon@noconroy.net>
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*
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* support.h contains functions that are either not _yet_ upstream in FreeBSD 14, or are shimmed
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* from OpenBSD. It is different from compat.h, which is strictly for backports.
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*/
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#ifndef _WG_SUPPORT
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#define _WG_SUPPORT
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#include <sys/types.h>
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#include <sys/limits.h>
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#include <sys/endian.h>
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#include <sys/socket.h>
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#include <sys/libkern.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/lock.h>
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#include <sys/socketvar.h>
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#include <sys/protosw.h>
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#include <net/vnet.h>
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#include <vm/uma.h>
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/* TODO the following is openbsd compat defines to allow us to copy the wg_*
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* files from openbsd (almost) verbatim. this will greatly increase maintenance
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* across the platforms. it should be moved to it's own file. the only thing
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* we're missing from this is struct pool (freebsd: uma_zone_t), which isn't a
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* show stopper, but is something worth considering in the future.
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* - md */
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#define rw_assert_wrlock(x) rw_assert(x, RA_WLOCKED)
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#define rw_enter_write rw_wlock
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#define rw_exit_write rw_wunlock
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#define rw_enter_read rw_rlock
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#define rw_exit_read rw_runlock
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#define rw_exit rw_unlock
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#define RW_DOWNGRADE 1
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#define rw_enter(x, y) do { \
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CTASSERT(y == RW_DOWNGRADE); \
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rw_downgrade(x); \
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} while (0)
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MALLOC_DECLARE(M_WG);
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#include <crypto/siphash/siphash.h>
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typedef struct {
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uint64_t k0;
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uint64_t k1;
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} SIPHASH_KEY;
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static inline uint64_t
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siphash24(const SIPHASH_KEY *key, const void *src, size_t len)
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{
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SIPHASH_CTX ctx;
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return (SipHashX(&ctx, 2, 4, (const uint8_t *)key, src, len));
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}
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#ifndef ARRAY_SIZE
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#endif
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#ifndef PRIV_NET_WG
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#define PRIV_NET_WG PRIV_NET_HWIOCTL
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#endif
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#ifndef IFT_WIREGUARD
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#define IFT_WIREGUARD IFT_PPP
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#endif
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static inline int
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sogetsockaddr(struct socket *so, struct sockaddr **nam)
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{
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int error;
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CURVNET_SET(so->so_vnet);
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error = (*so->so_proto->pr_usrreqs->pru_sockaddr)(so, nam);
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CURVNET_RESTORE();
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return (error);
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}
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#endif
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