OVS_KEY_ATTR_DP_HASH
if (*attrs & (1 << OVS_KEY_ATTR_DP_HASH)) {
u32 hash_val = nla_get_u32(a[OVS_KEY_ATTR_DP_HASH]);
*attrs &= ~(1 << OVS_KEY_ATTR_DP_HASH);
if (nla_put_u32(skb, OVS_KEY_ATTR_DP_HASH, output->ovs_flow_hash))
[OVS_KEY_ATTR_DP_HASH] = { .len = sizeof(u32) },