HW_HASH_KEY_SIZE
uint8_t rss_hash_key[HW_HASH_KEY_SIZE];
char buf[HW_HASH_KEY_SIZE*2+1] = {0};
for (p = buf, i=0; i<HW_HASH_KEY_SIZE; i++)
if (strspn(buf, "0123456789abcdefABCDEF") != (HW_HASH_KEY_SIZE * 2))
for (p = buf, i=0; i<HW_HASH_KEY_SIZE; i++) {
arc4rand(softc->vnic_info.rss_hash_key, HW_HASH_KEY_SIZE, 0);
rc = iflib_dma_alloc(ctx, HW_HASH_KEY_SIZE,
softc->vnic_info.rss_hash_key, HW_HASH_KEY_SIZE);