From: Christoph Hellwig <hch@infradead.org>
To: Chuck Lever <chuck.lever@oracle.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Linux NFS Mailing List <linux-nfs@vger.kernel.org>,
simo@redhat.com
Subject: Re: [PATCH RFC 04/10] SUNRPC: Add common byte-swapped RPC header constants
Date: Mon, 4 Feb 2019 06:32:39 -0800 [thread overview]
Message-ID: <20190204143239.GA15081@infradead.org> (raw)
In-Reply-To: <0EB44600-7CF7-45C3-A1AB-75B76EFA1546@oracle.com>
On Mon, Feb 04, 2019 at 09:16:54AM -0500, Chuck Lever wrote:
> They are. The problem is that we are byte-swapping the incoming wire
> data and then comparing to CPU-endian constants in some hot paths.
> It's better to leave the incoming data alone and compare to a pre-
> byte-swapped constant. This patch adds some of these constants that
> were missing, in preparation for fixing the hot paths.
>
> That is apparently not clear from the patch description, so I will
> endeavor to improve it.
Why do we need new enums / #defines for that?
Just replace:
if (beXX_to_cpu(pkt->field) == SOME_CONSTANT)
with
if (pkt->field == cpu_to_be32(SOME_CONSTANT))
and we are done. The latter is a pretty common pattern through
the kernel.
next prev parent reply other threads:[~2019-02-04 14:32 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-01 19:57 [PATCH RFC 00/10] SUNRPC GSS overhaul Chuck Lever
2019-02-01 19:57 ` [PATCH RFC 01/10] SUNRPC: Remove some dprintk() call sites from auth functions Chuck Lever
2019-02-04 19:04 ` J. Bruce Fields
2019-02-04 19:07 ` Chuck Lever
2019-02-01 19:57 ` [PATCH RFC 02/10] SUNRPC: Remove rpc_xprt::tsh_size Chuck Lever
2019-02-01 19:57 ` [PATCH RFC 03/10] SUNRPC: Add build option to disable support for insecure enctypes Chuck Lever
2019-02-01 19:57 ` [PATCH RFC 04/10] SUNRPC: Add common byte-swapped RPC header constants Chuck Lever
2019-02-02 2:30 ` Tom Talpey
2019-02-02 22:46 ` Chuck Lever
2019-02-03 15:00 ` Trond Myklebust
2019-02-03 16:49 ` Chuck Lever
2019-02-03 18:58 ` Trond Myklebust
2019-02-02 17:02 ` Christoph Hellwig
2019-02-02 22:49 ` Chuck Lever
2019-02-04 7:53 ` Christoph Hellwig
2019-02-04 14:16 ` Chuck Lever
2019-02-04 14:32 ` Christoph Hellwig [this message]
2019-02-04 14:56 ` Chuck Lever
2019-02-04 19:37 ` J. Bruce Fields
2019-02-05 1:57 ` Tom Talpey
2019-02-01 19:57 ` [PATCH RFC 05/10] SUNRPC: Use struct xdr_stream when constructing RPC Call header Chuck Lever
2019-02-01 19:57 ` [PATCH RFC 06/10] SUNRPC: Clean up rpc_verify_header() Chuck Lever
2019-02-01 19:58 ` [PATCH RFC 07/10] SUNRPC: Use struct xdr_stream when decoding RPC Reply header Chuck Lever
2019-02-01 19:58 ` [PATCH RFC 08/10] SUNRPC: Introduce trace points in rpc_auth_gss.ko Chuck Lever
2019-02-01 19:58 ` [PATCH RFC 09/10] SUNRPC: Remove xdr_buf_trim() Chuck Lever
2019-02-04 19:46 ` J. Bruce Fields
2019-02-04 19:49 ` Chuck Lever
2019-02-04 20:00 ` Bruce Fields
2019-02-04 20:07 ` Chuck Lever
2019-02-04 20:11 ` Bruce Fields
2019-02-01 19:58 ` [PATCH RFC 10/10] SUNRPC: Add SPDX IDs to some net/sunrpc/auth_gss/ files Chuck Lever
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