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SubjectRe: [PATCH v2 1/2] iWARP Connection Manager.
On Wed, 07 Jun 2006 15:06:05 -0500
Steve Wise <swise@opengridcomputing.com> wrote:

>
> This patch provides the new files implementing the iWARP Connection
> Manager.
>
> Review Changes:
>
> - sizeof -> sizeof()
>
> - removed printks
>
> - removed TT debug code
>
> - cleaned up lock/unlock around switch statements.
>
> - waitqueue -> completion for destroy path.
>
> ...
>
> +/*
> + * This function is called on interrupt context. Schedule events on
> + * the iwcm_wq thread to allow callback functions to downcall into
> + * the CM and/or block. Events are queued to a per-CM_ID
> + * work_list. If this is the first event on the work_list, the work
> + * element is also queued on the iwcm_wq thread.
> + *
> + * Each event holds a reference on the cm_id. Until the last posted
> + * event has been delivered and processed, the cm_id cannot be
> + * deleted.
> + */
> +static void cm_event_handler(struct iw_cm_id *cm_id,
> + struct iw_cm_event *iw_event)
> +{
> + struct iwcm_work *work;
> + struct iwcm_id_private *cm_id_priv;
> + unsigned long flags;
> +
> + work = kmalloc(sizeof(*work), GFP_ATOMIC);
> + if (!work)
> + return;

This allocation _will_ fail sometimes. The driver must recover from it.
Will it do so?

> +EXPORT_SYMBOL(iw_cm_init_qp_attr);

This file exports a ton of symbols. It's usual to provide some justifying
commentary in the changelog when this happens.

> +/*
> + * Copyright (c) 2005 Network Appliance, Inc. All rights reserved.
> + * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
> + *
> + * This software is available to you under a choice of one of two
> + * licenses. You may choose to be licensed under the terms of the GNU
> + * General Public License (GPL) Version 2, available from the file
> + * COPYING in the main directory of this source tree, or the
> + * OpenIB.org BSD license below:
> + *
> + * Redistribution and use in source and binary forms, with or
> + * without modification, are permitted provided that the following
> + * conditions are met:
> + *
> + * - Redistributions of source code must retain the above
> + * copyright notice, this list of conditions and the following
> + * disclaimer.
> + *
> + * - Redistributions in binary form must reproduce the above
> + * copyright notice, this list of conditions and the following
> + * disclaimer in the documentation and/or other materials
> + * provided with the distribution.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
> + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
> + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
> + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
> + * SOFTWARE.
> + */
> +#if !defined(IW_CM_PRIVATE_H)
> +#define IW_CM_PRIVATE_H

We normally use #ifndef here.


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