[openib-general] CQ error handling in IPoIB

[Moni Shoua]

Hi,
I have a question regarding error handling in IPoIB.

The spec says...

When a CQ encounters an error, in order to be able to use the CQ again,
the consumer should:
* Destroy all the QPs that are attached to the CQ
* Destroy the CQ
* Recreate the CQ through the Create Completion Queue verb

While (at least one part of) the code does...

static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
{
	...
	...
	...
        if (wc->status != IB_WC_SUCCESS &&
            wc->status != IB_WC_WR_FLUSH_ERR)
                ipoib_warn(priv, "failed send event "
                           "(status=%d, wrid=%d vend_err %x)\n",
                           wc->status, wr_id, wc->vendor_err);
}

Since I don't see any error handling and I understand that the only way left to make the driver work again is to restart it with uload/load, my question is: What does the code assume about errors happening on th CQ?

thanks

MoniS