SUNRPC_A_UNIX_GID_UID
[SUNRPC_A_UNIX_GID_UID] = { .type = NLA_U32, },
nla_put_u32(skb, SUNRPC_A_UNIX_GID_UID,
if (!tb[SUNRPC_A_UNIX_GID_UID])
nla_get_u32(tb[SUNRPC_A_UNIX_GID_UID]));