From: Jacob Keller <jacob.e.keller@intel.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: <davem@davemloft.net>, <netdev@vger.kernel.org>,
<edumazet@google.com>, <pabeni@redhat.com>,
<andrew+netdev@lunn.ch>, <horms@kernel.org>,
<michael.chan@broadcom.com>, <hkallweit1@gmail.com>,
<maxime.chevallier@bootlin.com>, <joshwash@google.com>,
<tariqt@nvidia.com>, <alexanderduyck@fb.com>,
<willemb@google.com>, <kory.maincent@bootlin.com>,
<sdf.kernel@gmail.com>, <jakub@cloudflare.com>, <nb@tipi-net.de>
Subject: Re: [PATCH net-next v2 05/12] net: ethtool: optionally skip rtnl_lock on Netlink path for SET ops
Date: Mon, 8 Jun 2026 18:01:27 -0700 [thread overview]
Message-ID: <6f452924-5055-4bf0-ac67-e684ed1a36b2@intel.com> (raw)
In-Reply-To: <20260608165826.2525b726@kernel.org>
On 6/8/2026 4:58 PM, Jakub Kicinski wrote:
> On Mon, 8 Jun 2026 15:15:48 -0700 Jacob Keller wrote:
>>> @@ -935,7 +935,13 @@ struct kernel_ethtool_ts_info {
>>> * these bits separate, per GET and SET. GET is much easier to "unlock".
>>> */
>>> #define ETHTOOL_OP_NEEDS_RTNL_LINKSETTINGS BIT(0)
>>> -#define ETHTOOL_OP_NEEDS_RTNL_GPAUSEPARAM BIT(1)
>>> +#define ETHTOOL_OP_NEEDS_RTNL_SPFLAGS BIT(1)
>>> +#define ETHTOOL_OP_NEEDS_RTNL_SRINGPARAM BIT(2)
>>> +#define ETHTOOL_OP_NEEDS_RTNL_SCHANNELS BIT(3)
>>> +#define ETHTOOL_OP_NEEDS_RTNL_SCOALESCE BIT(4)
>>> +#define ETHTOOL_OP_NEEDS_RTNL_GPAUSEPARAM BIT(5)
>>> +#define ETHTOOL_OP_NEEDS_RTNL_SPAUSEPARAM BIT(6)
>>> +#define ETHTOOL_OP_NEEDS_RTNL_RSS BIT(7)
>>
>> Whats the reasoning for changing order here? Is this sorted somehow?
>
> I went back and forth on this a little but at the end I wanted the GET
> and SET bits to be next to each other (PAUSE ones specifically, that's
> the only case where phylink forces us to add a GET bit).
>
>> Would it make more sense to use an enum to define the bits instead so
>> that patches don't have to do a -/+ of the same NAME?
>
> We'd need to add enum for bit ids and then defines for BIT(id)?
> Dunno, personally I don't really like that. And we never switch
> on the values here so enum buys us little. Maybe BTF, that's about it?
Its fine as is. I just didn't like seeing the bit indexes requiring
change mid-series.
You could just leave the indexes as the final values, but that also
looks odd, so I think its just a choice of which oddity do you prefer.
Regardless, it is noise since the only difference is inter-patch diffs
for stuff that will all be merged at once.
next prev parent reply other threads:[~2026-06-09 1:01 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-05 0:29 [PATCH net-next v2 00/12] net: ethtool: let ops locked drivers run without rtnl_lock Jakub Kicinski
2026-06-05 0:29 ` [PATCH net-next v2 01/12] net: ethtool: serialize broadcast notification sequence allocation Jakub Kicinski
2026-06-05 0:29 ` [PATCH net-next v2 02/12] net: ethtool: relax ethnl_req_get_phydev() locking assertion Jakub Kicinski
2026-06-05 0:29 ` [PATCH net-next v2 03/12] net: ethtool: make dev->hwprov ops-protected Jakub Kicinski
2026-06-05 0:29 ` [PATCH net-next v2 04/12] net: ethtool: optionally skip rtnl_lock on Netlink path for GET ops Jakub Kicinski
2026-06-05 0:29 ` [PATCH net-next v2 05/12] net: ethtool: optionally skip rtnl_lock on Netlink path for SET ops Jakub Kicinski
2026-06-08 22:15 ` Jacob Keller
2026-06-08 23:58 ` Jakub Kicinski
2026-06-09 1:01 ` Jacob Keller [this message]
2026-06-05 0:29 ` [PATCH net-next v2 06/12] net: ethtool: optionally skip rtnl_lock in cable test handlers Jakub Kicinski
2026-06-08 22:17 ` Jacob Keller
2026-06-05 0:29 ` [PATCH net-next v2 07/12] net: ethtool: optionally skip rtnl_lock in ethnl_tsinfo_dumpit() Jakub Kicinski
2026-06-05 0:29 ` [PATCH net-next v2 08/12] net: ethtool: optionally skip rtnl_lock in ethnl_act_module_fw_flash() Jakub Kicinski
2026-06-05 0:29 ` [PATCH net-next v2 09/12] net: ethtool: optionally skip rtnl_lock in RSS context handlers Jakub Kicinski
2026-06-05 0:29 ` [PATCH net-next v2 10/12] net: ethtool: ioctl: concentrate the locking Jakub Kicinski
2026-06-05 0:29 ` [PATCH net-next v2 11/12] net: ethtool: optionally skip rtnl_lock on IOCTL path Jakub Kicinski
2026-06-05 0:29 ` [PATCH net-next v2 12/12] docs: net: ethtool: document ops-locked drivers and op_needs_rtnl Jakub Kicinski
2026-06-05 22:48 ` [PATCH net-next v2 00/12] net: ethtool: let ops locked drivers run without rtnl_lock Stanislav Fomichev
2026-06-06 0:09 ` Jakub Kicinski
2026-06-08 15:20 ` Stanislav Fomichev
2026-06-08 22:04 ` Jacob Keller
2026-06-08 22:31 ` Jacob Keller
2026-06-08 23:01 ` Jacob Keller
2026-06-08 23:33 ` Tony Nguyen
2026-06-09 1:44 ` Jakub Kicinski
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