CONTEXT_LIST_QUEUED
ctx->msg_queue.status &= ~CONTEXT_LIST_QUEUED;
if (!(ctx->msg_queue.status & CONTEXT_LIST_QUEUED) &&
ctx->msg_queue.status |= CONTEXT_LIST_QUEUED;
if (!(buf->ctx->msg_queue.status & CONTEXT_LIST_QUEUED)) {
buf->ctx->msg_queue.status |= CONTEXT_LIST_QUEUED;