From: David Gibson <david@gibson.dropbear.id.au>
To: Laurent Vivier <lvivier@redhat.com>
Cc: passt-dev@passt.top
Subject: Re: [PATCH v2 1/8] iov: add some functions to manage iovec
Date: Thu, 15 Feb 2024 11:32:58 +1100 [thread overview]
Message-ID: <Zc1but422Ovz49zG@zatzit> (raw)
In-Reply-To: <Zc1ZxhbringqXN5l@zatzit>
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On Thu, Feb 15, 2024 at 11:24:38AM +1100, David Gibson wrote:
> On Wed, Feb 14, 2024 at 09:56:21AM +0100, Laurent Vivier wrote:
> > Introduce functions to copy to/from a buffer from/to an iovec array,
> > to compute data length in in bytes of an iovec and to copy memory from
> > an iovec to another.
> >
> > iov_from_buf(), iov_to_buf(), iov_size(), iov_copy().
> >
> > Signed-off-by: Laurent Vivier <lvivier@redhat.com>
[snip]
> > +size_t iov_from_buf(const struct iovec *iov, unsigned int iov_cnt,
> > + size_t offset, const void *buf, size_t bytes)
One other thing I didn't think of on my first reply: although it
probably doesn't matter in practice, struct msghdr uses a size_t for
the length of the vector. So, I think it makes sense for us to
standardise on that too. To confuse matters, writev() uses a (signed)
int, but we work with recvmsg() etc. more than we do with writev() so
I think size_t is a better choice.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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next prev parent reply other threads:[~2024-02-15 0:40 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-14 8:56 [PATCH v2 0/8] Add vhost-user support to passt (part 1) Laurent Vivier
2024-02-14 8:56 ` [PATCH v2 1/8] iov: add some functions to manage iovec Laurent Vivier
2024-02-15 0:24 ` David Gibson
2024-02-15 0:32 ` David Gibson [this message]
2024-02-16 5:29 ` Stefano Brivio
2024-02-14 8:56 ` [PATCH v2 2/8] pcap: add pcap_iov() Laurent Vivier
2024-02-15 0:35 ` David Gibson
2024-02-16 5:30 ` Stefano Brivio
2024-02-14 8:56 ` [PATCH v2 3/8] checksum: align buffers Laurent Vivier
2024-02-15 0:40 ` David Gibson
2024-02-14 8:56 ` [PATCH v2 4/8] checksum: add csum_iov() Laurent Vivier
2024-02-15 0:44 ` David Gibson
2024-02-14 8:56 ` [PATCH v2 5/8] util: move IP stuff from util.[ch] to ip.[ch] Laurent Vivier
2024-02-15 2:29 ` David Gibson
2024-02-14 8:56 ` [PATCH v2 6/8] checksum: use csum_ip4_header() in udp.c and tcp.c Laurent Vivier
2024-02-15 2:51 ` David Gibson
2024-02-16 9:08 ` Stefano Brivio
2024-02-16 14:17 ` Laurent Vivier
2024-02-16 14:54 ` Stefano Brivio
2024-02-16 18:05 ` Laurent Vivier
2024-02-16 18:24 ` Stefano Brivio
2024-02-17 14:22 ` Laurent Vivier
2024-02-17 14:37 ` Stefano Brivio
2024-02-19 2:06 ` David Gibson
2024-02-14 8:56 ` [PATCH v2 7/8] checksum: introduce functions to compute the header part checksum for TCP/UDP Laurent Vivier
2024-02-15 3:12 ` David Gibson
2024-02-14 8:56 ` [PATCH v2 8/8] tap: make tap_update_mac() generic Laurent Vivier
2024-02-15 3:13 ` David Gibson
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