From: Johannes Berg <johannes@sipsolutions.net>
To: Jakub Kicinski <jakub.kicinski@netronome.com>, netdev@vger.kernel.org
Cc: davem@davemloft.net, dsa@cumulusnetworks.com,
daniel@iogearbox.net, alexei.starovoitov@gmail.com,
bblanco@gmail.com, john.fastabend@gmail.com, kubakici@wp.pl,
oss-drivers@netronome.com
Subject: Re: [RFC 1/4] netlink: make extended ACK setting NULL-friendly
Date: Tue, 25 Apr 2017 10:13:34 +0200 [thread overview]
Message-ID: <1493108014.2592.1.camel@sipsolutions.net> (raw)
In-Reply-To: <20170425080644.122536-2-jakub.kicinski@netronome.com> (sfid-20170425_100815_174836_54D64311)
On Tue, 2017-04-25 at 01:06 -0700, Jakub Kicinski wrote:
> +#define NL_SET_ERR_MSG(extack, msg) do { \
> + struct netlink_ext_ack *_extack = (extack); \
> + static const char _msg[] = (msg); \
> + \
> + if (_extack) \
> + _extack->_msg = _msg; \
> + else \
> + pr_info("%s\n", _msg); \
> } while (0)
That's a good point, I used it only for genetlink so far where it was
guaranteed non-NULL.
I'm not really sure about the printing though - I'd rather not people
start relying on that and then we convert to have non-NULL and the
message disappears as a result ...
johannes
next prev parent reply other threads:[~2017-04-25 8:13 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-25 8:06 [RFC 0/4] xdp: use netlink extended ACK reporting Jakub Kicinski
2017-04-25 8:06 ` [RFC 1/4] netlink: make extended ACK setting NULL-friendly Jakub Kicinski
2017-04-25 8:13 ` Johannes Berg [this message]
2017-04-25 20:53 ` Jakub Kicinski
2017-04-26 7:17 ` Johannes Berg
2017-04-25 9:12 ` Daniel Borkmann
2017-04-25 8:06 ` [RFC 2/4] xdp: propagate extended ack to XDP setup Jakub Kicinski
2017-04-25 8:06 ` [RFC 3/4] nfp: make use of extended ack message reporting Jakub Kicinski
2017-04-25 12:42 ` Jamal Hadi Salim
2017-04-25 14:20 ` David Miller
2017-04-26 11:13 ` [oss-drivers] " Simon Horman
2017-04-26 13:03 ` Jamal Hadi Salim
2017-04-26 13:31 ` Daniel Borkmann
2017-04-26 14:44 ` David Miller
2017-04-26 18:44 ` Simon Horman
2017-04-25 8:06 ` [RFC 4/4] virtio_net: " Jakub Kicinski
2017-04-25 9:05 ` [RFC 0/4] xdp: use netlink extended ACK reporting Daniel Borkmann
2017-04-25 16:54 ` Jesper Dangaard Brouer
2017-04-25 21:00 ` Jakub Kicinski
2017-04-25 14:53 ` David Ahern
2017-04-25 21:05 ` Jakub Kicinski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1493108014.2592.1.camel@sipsolutions.net \
--to=johannes@sipsolutions.net \
--cc=alexei.starovoitov@gmail.com \
--cc=bblanco@gmail.com \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=dsa@cumulusnetworks.com \
--cc=jakub.kicinski@netronome.com \
--cc=john.fastabend@gmail.com \
--cc=kubakici@wp.pl \
--cc=netdev@vger.kernel.org \
--cc=oss-drivers@netronome.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).