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From: Andreas Schwab <schwab@linux-m68k.org>
To: "David Laight" <David.Laight@ACULAB.COM>
Cc: "Joe Perches" <joe@perches.com>,
	"Ben Hutchings" <bhutchings@solarflare.com>,
	"Or Gerlitz" <ogerlitz@mellanox.com>, <davem@davemloft.net>,
	<roland@kernel.org>, <yevgenyp@mellanox.com>, <oren@mellanox.com>,
	<netdev@vger.kernel.org>,
	"Hadar Hen Zion" <hadarh@mellanox.co.il>
Subject: Re: [PATCH net-next 09/10] net/mlx4_en: Manage flow steering rules with ethtool
Date: Mon, 02 Jul 2012 13:35:49 +0200	[thread overview]
Message-ID: <m28vf2o0oa.fsf@igel.home> (raw)
In-Reply-To: <AE90C24D6B3A694183C094C60CF0A2F6026B6F70@saturn3.aculab.com> (David Laight's message of "Mon, 2 Jul 2012 11:19:50 +0100")

"David Laight" <David.Laight@ACULAB.COM> writes:

>  
>> > Or write it as (!field || !(typeof(field))~field) which more closely
>> > resembles what the macro name expresses.
>> 
>> Better still, or maybe:
>> 
>> 	field == 0 || field == (typeof field)~0
>
> Which doesn't work when sizeof(field) > sizeof(int).
> Needs another cast.
>
> 	field == 0 || field == (typeof field)~(typeof field)0

You can avoid that by using (typeof field)-1.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

  reply	other threads:[~2012-07-02 11:35 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-01  9:43 [PATCH net-next 00/10] net/mlx4: Add flow-steering support Or Gerlitz
2012-07-01  9:43 ` [PATCH net-next 01/10] net/mlx4_core: Change resource tracking mechanism to use red-black tree Or Gerlitz
2012-07-01 10:17   ` David Miller
2012-07-01  9:43 ` [PATCH net-next 02/10] net/mlx4_core: Change resource tracking ID to be 64 bit Or Gerlitz
2012-07-01  9:43 ` [PATCH net-next 03/10] net/mlx4_en: Re-design multicast attachments flow Or Gerlitz
2012-07-01 10:32   ` David Miller
2012-07-01  9:43 ` [PATCH net-next 04/10] net/mlx4: Set steering mode according to device capabilities Or Gerlitz
2012-07-01 10:20   ` David Miller
2012-07-01  9:43 ` [PATCH net-next 05/10] net/mlx4_core: Add firmware commands to support device managed flow steering Or Gerlitz
2012-07-01  9:43 ` [PATCH net-next 06/10] {NET,IB}/mlx4: Add device managed flow steering firmware API Or Gerlitz
2012-07-01 10:30   ` David Miller
2012-07-01 12:29     ` Or Gerlitz
2012-07-01 21:42       ` David Miller
2012-07-02  7:55         ` Or Gerlitz
2012-07-02  8:14           ` Roland Dreier
2012-07-02  8:28             ` Or Gerlitz
2012-07-02  8:36               ` David Miller
2012-07-02 13:00                 ` Or Gerlitz
2012-07-02  8:34           ` David Miller
2012-07-02 18:07             ` Ben Hutchings
2012-07-03  0:15               ` David Miller
2012-07-03  1:04                 ` David Miller
2012-07-03 11:10                   ` Or Gerlitz
2012-07-01  9:43 ` [PATCH net-next 07/10] net/mlx4_core: Add resource tracking for device managed flow steering rules Or Gerlitz
2012-07-01 10:22   ` David Miller
2012-07-01  9:43 ` [PATCH net-next 08/10] net/mlx4: Implement promiscuous mode with device managed flow-steering Or Gerlitz
2012-07-01  9:43 ` [PATCH net-next 09/10] net/mlx4_en: Manage flow steering rules with ethtool Or Gerlitz
2012-07-01 10:23   ` David Miller
2012-07-01 16:00   ` Ben Hutchings
2012-07-01 16:38     ` Joe Perches
2012-07-01 17:31       ` Joe Perches
2012-07-01 18:48         ` Andreas Schwab
2012-07-01 19:52           ` Joe Perches
2012-07-02 10:19             ` David Laight
2012-07-02 11:35               ` Andreas Schwab [this message]
2012-07-02 12:15                 ` David Laight
2012-07-03  8:14                 ` Or Gerlitz
2012-07-02 12:57     ` Or Gerlitz
2012-07-03  1:47       ` Ben Hutchings
2012-07-03  8:56         ` Or Gerlitz
2012-07-03  8:58         ` Or Gerlitz
2012-07-02 13:32     ` Or Gerlitz
2012-07-03  1:50       ` Ben Hutchings
2012-07-03  9:00     ` Or Gerlitz
2012-07-01  9:43 ` [PATCH net-next 10/10] net/mlx4_en: Add support for drop action through ethtool Or Gerlitz

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