From: Florian Fainelli <f.fainelli@gmail.com>
To: Michal Kubecek <mkubecek@suse.cz>, Jiri Pirko <jiri@resnulli.us>
Cc: David Miller <davem@davemloft.net>,
netdev@vger.kernel.org,
Jakub Kicinski <jakub.kicinski@netronome.com>,
Andrew Lunn <andrew@lunn.ch>,
John Linville <linville@tuxdriver.com>,
Stephen Hemminger <stephen@networkplumber.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next v5 13/22] ethtool: provide driver/device information in GET_INFO request
Date: Wed, 27 Mar 2019 19:30:09 -0700 [thread overview]
Message-ID: <6e5fd327-d2ba-1b8d-44ce-fa975c73bffb@gmail.com> (raw)
In-Reply-To: <20190327222554.GV26076@unicorn.suse.cz>
On 3/27/2019 3:25 PM, Michal Kubecek wrote:
> On Wed, Mar 27, 2019 at 09:14:11PM +0100, Jiri Pirko wrote:
>> Mon, Mar 25, 2019 at 06:08:33PM CET, mkubecek@suse.cz wrote:
>>> +
>>> +Kernel response contents:
>>> +
>>> + ETHA_INFO_DEV (nested) device identification
>>> + ETHA_INFO_DRVINFO (nested) driver information
>>> + ETHA_DRVINFO_DRIVER (string) driver name
>>> + ETHA_DRVINFO_FWVERSION (string) firmware version
>>> + ETHA_DRVINFO_BUSINFO (string) device bus address
>>> + ETHA_DRVINFO_EROM_VER (string) expansion ROM version
>>
>> These are already very nicely supported in devlink. No need to duplicate
>> here.
>
> They are supported by devlink as an interface. But devlink itself is
> only supported by few NIC drivers at the moment:
>
> mike@unicorn:~/work/git/net-next> grep -r devlink_ops drivers/net/
You might want to include net/ in your list too.
> drivers/net/ethernet/mellanox/mlx4/main.c:static const struct devlink_ops mlx4_devlink_ops = {
> drivers/net/ethernet/mellanox/mlx4/main.c: devlink = devlink_alloc(&mlx4_devlink_ops, sizeof(*priv));
> drivers/net/ethernet/mellanox/mlxsw/core.c:static const struct devlink_ops mlxsw_devlink_ops = {
> drivers/net/ethernet/mellanox/mlxsw/core.c: devlink = devlink_alloc(&mlxsw_devlink_ops, alloc_size);
> drivers/net/ethernet/mellanox/mlx5/core/main.c:static const struct devlink_ops mlx5_devlink_ops = {
> drivers/net/ethernet/mellanox/mlx5/core/main.c: devlink = devlink_alloc(&mlx5_devlink_ops, sizeof(*dev));
> drivers/net/ethernet/cavium/liquidio/lio_main.c:static const struct devlink_ops liquidio_devlink_ops = {
> drivers/net/ethernet/cavium/liquidio/lio_main.c: devlink = devlink_alloc(&liquidio_devlink_ops,
> drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c:static const struct devlink_ops bnxt_dl_ops = {
> drivers/net/ethernet/netronome/nfp/nfp_main.c: devlink = devlink_alloc(&nfp_devlink_ops, sizeof(*pf));
> drivers/net/ethernet/netronome/nfp/nfp_main.h:extern const struct devlink_ops nfp_devlink_ops;
> drivers/net/ethernet/netronome/nfp/nfp_devlink.c:const struct devlink_ops nfp_devlink_ops = {
> drivers/net/netdevsim/devlink.c:static const struct devlink_ops nsim_devlink_ops = {
> drivers/net/netdevsim/devlink.c: devlink = devlink_alloc(&nsim_devlink_ops, 0);
>
> That's 6 drivers from 4 vendors (if I don't count netdevsim). And I did
> not check if all of them do actually provide the information shown
> above. On the other hand:
>
> mike@unicorn:~/work/git/net-next> egrep -r '\.get_drvinfo' drivers/net/ | wc -l
> 240
>
> Some of these 240 lines assign the same handler but not enough to make
> me optimistic about being able to implement "ethtool -i <dev>" using
> devlink interface in near future (say few months or one year).
>
> I'm all for implementing new features which are are related to physical
> device (ASIC) rather than network interface only in devlink (at the
> level of kernel-userspace interface). But for features already provided
> by ethtool (userspace utility) I can't help seeing the state of devlink
> support in NIC drivers as a serious blocker.
Can't we just interrogate devlink first if there is a devlink <->
net_device mapping and fallback to ethtool_ops::get_drvinfo if that did
not work? Maybe issue a (rate-limited) warning "use devlink instead".
--
Florian
next prev parent reply other threads:[~2019-03-28 2:30 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-25 17:07 [PATCH net-next v5 00/22] ethtool netlink interface, part 1 Michal Kubecek
2019-03-25 17:07 ` [PATCH net-next v5 01/22] rtnetlink: provide permanent hardware address in RTM_NEWLINK Michal Kubecek
2019-03-26 10:08 ` Jiri Pirko
2019-03-26 10:31 ` Michal Kubecek
2019-03-26 11:38 ` Jiri Pirko
2019-03-26 19:46 ` David Miller
2019-03-25 17:08 ` [PATCH net-next v5 02/22] netlink: introduce nla_put_bitfield32() Michal Kubecek
2019-03-26 10:09 ` Jiri Pirko
2019-03-28 1:56 ` Florian Fainelli
2019-03-25 17:08 ` [PATCH net-next v5 03/22] netlink: add strict version of nla_parse_nested() Michal Kubecek
2019-03-26 10:11 ` Jiri Pirko
2019-03-28 1:57 ` Florian Fainelli
2019-03-25 17:08 ` [PATCH net-next v5 04/22] ethtool: move to its own directory Michal Kubecek
2019-03-26 10:14 ` Jiri Pirko
2019-03-28 1:57 ` Florian Fainelli
2019-03-25 17:08 ` [PATCH net-next v5 05/22] ethtool: introduce ethtool netlink interface Michal Kubecek
2019-03-26 12:09 ` Jiri Pirko
2019-03-26 13:24 ` Michal Kubecek
2019-03-26 13:42 ` Jiri Pirko
2019-03-27 9:26 ` Michal Kubecek
2019-03-27 9:50 ` Jiri Pirko
2019-03-28 2:05 ` Florian Fainelli
2019-03-28 8:10 ` Jiri Pirko
2019-03-28 9:37 ` Michal Kubecek
2019-03-28 13:23 ` Jiri Pirko
2019-03-28 17:00 ` Florian Fainelli
2019-03-28 17:28 ` Jiri Pirko
2019-03-26 16:36 ` Jiri Pirko
2019-03-26 17:32 ` Michal Kubecek
2019-03-27 9:26 ` Jiri Pirko
2019-03-25 17:08 ` [PATCH net-next v5 06/22] ethtool: helper functions for " Michal Kubecek
2019-03-26 12:38 ` Jiri Pirko
2019-03-26 14:19 ` Michal Kubecek
2019-03-26 16:22 ` Jiri Pirko
2019-03-25 17:08 ` [PATCH net-next v5 07/22] ethtool: netlink bitset handling Michal Kubecek
2019-03-26 15:59 ` Jiri Pirko
2019-03-26 17:59 ` Michal Kubecek
2019-03-27 9:57 ` Jiri Pirko
2019-03-27 10:19 ` Michal Kubecek
2019-03-25 17:08 ` [PATCH net-next v5 08/22] ethtool: support for netlink notifications Michal Kubecek
2019-03-26 16:34 ` Jiri Pirko
2019-03-26 18:17 ` Michal Kubecek
2019-03-27 9:38 ` Jiri Pirko
2019-03-27 9:51 ` Andrew Lunn
2019-03-27 10:04 ` Jiri Pirko
2019-03-27 10:16 ` Andrew Lunn
2019-03-27 10:41 ` Jiri Pirko
2019-03-27 9:59 ` Michal Kubecek
2019-03-27 10:43 ` Jiri Pirko
2019-03-25 17:08 ` [PATCH net-next v5 09/22] ethtool: implement EVENT notifications Michal Kubecek
2019-03-27 13:04 ` Jiri Pirko
2019-03-27 14:14 ` Michal Kubecek
2019-03-28 2:14 ` Florian Fainelli
2019-03-28 6:41 ` Michal Kubecek
2019-03-28 9:16 ` Jiri Pirko
2019-03-25 17:08 ` [PATCH net-next v5 10/22] ethtool: generic handlers for GET requests Michal Kubecek
2019-03-27 16:35 ` Jiri Pirko
2019-03-27 21:53 ` Michal Kubecek
2019-03-28 13:32 ` Jiri Pirko
2019-03-25 17:08 ` [PATCH net-next v5 11/22] ethtool: move string arrays into common file Michal Kubecek
2019-03-28 2:17 ` Florian Fainelli
2019-03-25 17:08 ` [PATCH net-next v5 12/22] ethtool: provide string sets with GET_STRSET request Michal Kubecek
2019-03-27 20:12 ` Jiri Pirko
2019-03-27 22:56 ` Michal Kubecek
2019-03-29 8:43 ` Jiri Pirko
2019-03-28 2:25 ` Florian Fainelli
2019-03-28 7:18 ` Michal Kubecek
2019-03-28 13:43 ` Jiri Pirko
2019-03-28 14:04 ` Michal Kubecek
2019-03-28 17:35 ` Jiri Pirko
2019-03-28 18:52 ` Jakub Kicinski
2019-03-28 20:43 ` Michal Kubecek
2019-03-28 21:06 ` Jakub Kicinski
2019-03-29 6:52 ` Jiri Pirko
2019-03-28 22:28 ` Michal Kubecek
2019-03-25 17:08 ` [PATCH net-next v5 13/22] ethtool: provide driver/device information in GET_INFO request Michal Kubecek
2019-03-27 20:14 ` Jiri Pirko
2019-03-27 22:25 ` Michal Kubecek
2019-03-28 2:30 ` Florian Fainelli [this message]
2019-03-28 9:21 ` Jiri Pirko
2019-03-28 9:53 ` Michal Kubecek
2019-03-28 16:34 ` Jiri Pirko
2019-03-28 20:09 ` Jakub Kicinski
2019-03-28 22:46 ` Michal Kubecek
2019-03-29 18:48 ` Jakub Kicinski
2019-03-29 18:53 ` Florian Fainelli
2019-03-25 17:08 ` [PATCH net-next v5 14/22] ethtool: provide timestamping " Michal Kubecek
2019-03-28 3:36 ` Florian Fainelli
2019-03-28 10:03 ` Michal Kubecek
2019-03-25 17:08 ` [PATCH net-next v5 15/22] ethtool: provide link mode names as a string set Michal Kubecek
2019-03-28 3:52 ` Florian Fainelli
2019-03-25 17:08 ` [PATCH net-next v5 16/22] ethtool: provide link settings and link modes in GET_SETTINGS request Michal Kubecek
2019-03-28 3:44 ` Florian Fainelli
2019-03-28 10:04 ` Michal Kubecek
2019-03-25 17:08 ` [PATCH net-next v5 17/22] ethtool: set link settings and link modes with SET_SETTINGS request Michal Kubecek
2019-03-25 17:08 ` [PATCH net-next v5 18/22] ethtool: provide link state in GET_SETTINGS request Michal Kubecek
2019-03-25 17:08 ` [PATCH net-next v5 19/22] ethtool: provide WoL information " Michal Kubecek
2019-03-28 3:42 ` Florian Fainelli
2019-03-28 10:10 ` Michal Kubecek
2019-03-25 17:08 ` [PATCH net-next v5 20/22] ethtool: set WoL settings with SET_SETTINGS request Michal Kubecek
2019-03-28 3:49 ` Florian Fainelli
2019-03-25 17:08 ` [PATCH net-next v5 21/22] ethtool: provide message level in GET_SETTINGS request Michal Kubecek
2019-03-28 3:46 ` Florian Fainelli
2019-03-25 17:09 ` [PATCH net-next v5 22/22] ethtool: set message level with SET_SETTINGS request Michal Kubecek
2019-03-28 3:48 ` Florian Fainelli
2019-03-27 13:09 ` [PATCH net-next v5 00/22] ethtool netlink interface, part 1 Jiri Pirko
2019-03-27 14:28 ` Michal Kubecek
2019-03-27 15:19 ` Jiri Pirko
2019-03-27 19:12 ` David Miller
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