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shmif: reduce the number of calls of cprng(9)

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This commit is contained in:
ozaki-r 2020-02-25 03:26:18 +00:00
parent 056381ce4e
commit 82bf8980a0
1 changed files with 6 additions and 6 deletions
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12
sys/rump/net/lib/libshmif/if_shmem.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_shmem.c,v 1.80 2020/02/25 03:25:36 ozaki-r Exp $ */
/* $NetBSD: if_shmem.c,v 1.81 2020/02/25 03:26:18 ozaki-r Exp $ */
/*
* Copyright (c) 2009, 2010 Antti Kantee. All Rights Reserved.
@ -28,7 +28,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_shmem.c,v 1.80 2020/02/25 03:25:36 ozaki-r Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_shmem.c,v 1.81 2020/02/25 03:26:18 ozaki-r Exp $");
#include <sys/param.h>
#include <sys/atomic.h>
@ -163,16 +163,16 @@ allocif(int unit, struct shmif_sc **scp)
uint8_t enaddr[ETHER_ADDR_LEN] = { 0xb2, 0xa0, 0x00, 0x00, 0x00, 0x00 };
struct shmif_sc *sc;
struct ifnet *ifp;
uint32_t randnum;
uint64_t randnum;
int error;
randnum = cprng_strong32();
memcpy(&enaddr[2], &randnum, sizeof(randnum));
randnum = cprng_strong64();
memcpy(&enaddr[2], &randnum, 4);
sc = kmem_zalloc(sizeof(*sc), KM_SLEEP);
sc->sc_memfd = -1;
sc->sc_unit = unit;
sc->sc_uid = cprng_strong64();
sc->sc_uid = randnum;
ifp = &sc->sc_ec.ec_if;