From: Jakub Kicinski <kuba@kernel.org>
To: Jiri Pirko <jiri@resnulli.us>
Cc: davem@davemloft.net, netdev@vger.kernel.org, edumazet@google.com,
pabeni@redhat.com, jacob.e.keller@intel.com
Subject: Re: [PATCH net-next 05/14] devlink: use an explicit structure for dump context
Date: Wed, 4 Jan 2023 18:22:18 -0800 [thread overview]
Message-ID: <20230104182218.33ac9da5@kernel.org> (raw)
In-Reply-To: <Y7VPES6vqZWEMqwM@nanopsycho>
On Wed, 4 Jan 2023 11:04:01 +0100 Jiri Pirko wrote:
> Wed, Jan 04, 2023 at 05:16:27AM CET, kuba@kernel.org wrote:
> >Create a dump context structure instead of using cb->args
> >as an unsigned long array. This is a pure conversion which
> >is intended to be as much of a noop as possible.
> >Subsequent changes will use this to simplify the code.
> >
> >The two non-trivial parts are:
> > - devlink_nl_cmd_health_reporter_dump_get_dumpit() checks args[0]
> > to see if devlink_fmsg_dumpit() has already been called (whether
> > this is the first msg), but doesn't use the exact value, so we
> > can drop the local variable there already
> > - devlink_nl_cmd_region_read_dumpit() uses args[0] for address
> > but we'll use args[1] now, shouldn't matter
>
> I don't follow this. Where do you use args[1]? you mean
> dump->start_offset?
Yes, it used to be stored at the start of the args/cb buffer,
now it's stored after index, even tho index is not used.
> If yes, it does not matter at all and I think
> mentioning that only confuses reader (as it did for me).
I think that's fine. I want a note for myself that I knew the "binary
layouts" are changed.
> >diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
> >index e01ba7999b91..bcc930b7cfcf 100644
> >--- a/net/devlink/leftover.c
> >+++ b/net/devlink/leftover.c
> >@@ -1222,9 +1222,10 @@ static void devlink_rate_notify(struct devlink_rate *devlink_rate,
> > static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
> > struct netlink_callback *cb)
> > {
> >+ struct devlink_nl_dump_state *dump = devl_dump_state(cb);
>
> Could this be named "state" or "dump_state"? "dump" is not what it is.
Sure...
next prev parent reply other threads:[~2023-01-05 2:22 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-04 4:16 [PATCH net-next 00/14] devlink: code split and structured instance walk Jakub Kicinski
2023-01-04 4:16 ` [PATCH net-next 01/14] devlink: move code to a dedicated directory Jakub Kicinski
2023-01-04 4:16 ` [PATCH net-next 02/14] devlink: split out core code Jakub Kicinski
2023-01-04 9:50 ` Jiri Pirko
2023-01-05 2:10 ` Jakub Kicinski
2023-01-06 23:55 ` Jacob Keller
2023-01-04 4:16 ` [PATCH net-next 03/14] devlink: split out netlink code Jakub Kicinski
2023-01-05 9:03 ` Jiri Pirko
2023-01-05 18:20 ` Jakub Kicinski
2023-01-06 8:47 ` Jiri Pirko
2023-01-04 4:16 ` [PATCH net-next 04/14] netlink: add macro for checking dump ctx size Jakub Kicinski
2023-01-04 9:51 ` Jiri Pirko
2023-01-04 4:16 ` [PATCH net-next 05/14] devlink: use an explicit structure for dump context Jakub Kicinski
2023-01-04 10:04 ` Jiri Pirko
2023-01-05 2:22 ` Jakub Kicinski [this message]
2023-01-04 4:16 ` [PATCH net-next 06/14] devlink: remove start variables from dumps Jakub Kicinski
2023-01-04 4:16 ` [PATCH net-next 07/14] devlink: drop the filter argument from devlinks_xa_find_get Jakub Kicinski
2023-01-04 10:05 ` Jiri Pirko
2023-01-04 4:16 ` [PATCH net-next 08/14] devlink: health: combine loops in dump Jakub Kicinski
2023-01-04 10:06 ` Jiri Pirko
2023-01-04 4:16 ` [PATCH net-next 09/14] devlink: restart dump based on devlink instance ids (simple) Jakub Kicinski
2023-01-04 14:18 ` Jiri Pirko
2023-01-05 3:21 ` Jakub Kicinski
2023-01-04 4:16 ` [PATCH net-next 10/14] devlink: restart dump based on devlink instance ids (nested) Jakub Kicinski
2023-01-04 15:47 ` Jiri Pirko
2023-01-04 4:16 ` [PATCH net-next 11/14] devlink: restart dump based on devlink instance ids (function) Jakub Kicinski
2023-01-04 15:51 ` Jiri Pirko
2023-01-04 4:16 ` [PATCH net-next 12/14] devlink: uniformly take the devlink instance lock in the dump loop Jakub Kicinski
2023-01-04 15:52 ` Jiri Pirko
2023-01-04 4:16 ` [PATCH net-next 13/14] devlink: add by-instance dump infra Jakub Kicinski
2023-01-04 16:50 ` Jiri Pirko
2023-01-05 3:46 ` Jakub Kicinski
2023-01-05 9:02 ` Jiri Pirko
2023-01-05 18:24 ` Jakub Kicinski
2023-01-06 8:56 ` Jiri Pirko
2023-01-06 21:12 ` Jakub Kicinski
2023-01-07 9:23 ` Jiri Pirko
2023-01-09 19:49 ` Jakub Kicinski
2023-01-10 14:31 ` Jiri Pirko
2023-01-12 0:13 ` Jacob Keller
2023-01-06 11:25 ` Jiri Pirko
2023-01-04 4:16 ` [PATCH net-next 14/14] devlink: convert remaining dumps to the by-instance scheme Jakub Kicinski
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