From: Joe Perches <joe@perches.com>
To: Gu Zheng <guz.fnst@cn.fujitsu.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [RESEND PATCH] net: introduce helper macra CMSG_FOREACH_HDR
Date: Fri, 05 Dec 2014 00:02:32 -0800 [thread overview]
Message-ID: <1417766552.2721.45.camel@perches.com> (raw)
In-Reply-To: <54815B40.1050909@cn.fujitsu.com>
On Fri, 2014-12-05 at 15:14 +0800, Gu Zheng wrote:
> Introduce helper macra
macro
> CMSG_FOREACH_HDR as a wrapper of the enumerating
> cmsghdr from msghdr, just cleanup.
maybe better to use lower case "for_each_cmsg_hdr"
or some such.
checkpatch would recognize that too as long as it
uses "for_each".
> diff --git a/include/linux/socket.h b/include/linux/socket.h
[]
> @@ -94,6 +94,10 @@ struct cmsghdr {
> (cmsg)->cmsg_len <= (unsigned long) \
> ((mhdr)->msg_controllen - \
> ((char *)(cmsg) - (char *)(mhdr)->msg_control)))
> +#define CMSG_FOREACH_HDR(cmsg, msg) \
> + for (cmsg = CMSG_FIRSTHDR(msg); \
> + cmsg; \
> + cmsg = CMSG_NXTHDR(msg, cmsg))
next prev parent reply other threads:[~2014-12-05 8:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-05 7:14 [RESEND PATCH] net: introduce helper macra CMSG_FOREACH_HDR Gu Zheng
2014-12-05 8:02 ` Joe Perches [this message]
2014-12-05 8:29 ` Gu Zheng
2014-12-09 20:23 ` David Miller
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