Function get_random_bytes

freebsd/net80211/ieee80211_freebsd.c:751–762

#include <sys/libkern.h>

void
get_random_bytes(void *p, size_t n)
{
	uint8_t *dp = p;

	while (n > 0) {
		uint32_t v = arc4random();
		size_t nb = n > sizeof(uint32_t) ? sizeof(uint32_t) : n;
		bcopy(&v, dp, n > sizeof(uint32_t) ? sizeof(uint32_t) : n);
		dp += sizeof(uint32_t), n -= nb;
	}
}

/*
 * Helper function for events that pass just a single mac address.