linux-kernel - [PATCH net-next v4 05/10] include: netdevice: Add module firmware flashing in progress flag to net

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Date: Thu, 18 Apr 2024 13:34:50 +0300
From: Danielle Ratson <danieller@...dia.com>
To: <netdev@...r.kernel.org>
CC: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <corbet@....net>, <linux@...linux.org.uk>,
	<sdf@...gle.com>, <kory.maincent@...tlin.com>,
	<maxime.chevallier@...tlin.com>, <vladimir.oltean@....com>,
	<przemyslaw.kitszel@...el.com>, <ahmed.zaki@...el.com>,
	<richardcochran@...il.com>, <shayagr@...zon.com>, <paul.greenwalt@...el.com>,
	<jiri@...nulli.us>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <mlxsw@...dia.com>, <petrm@...dia.com>,
	<idosch@...dia.com>, <danieller@...dia.com>
Subject: [PATCH net-next v4 05/10] include: netdevice: Add module firmware flashing in progress flag to net_device

Some operations cannot be performed during the firmware flashing
process and will be vetoed later in the patchset.
For example, flashing firmware on a device which is already in a flashing
process should be forbidden.

In order to veto those scenarios, add a flag in 'struct net_device' that
indicates when a firmware flash is taking place on the module.

Signed-off-by: Danielle Ratson <danieller@...dia.com>
Reviewed-by: Petr Machata <petrm@...dia.com>
---
 include/linux/netdevice.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index d45f330d083d..5dfcacff1db0 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1989,6 +1989,8 @@ enum netdev_reg_state {
  *
  *	@threaded:	napi threaded mode is enabled
  *
+ *	@module_fw_flash_in_progress:	Module firmware flashing is in progress.
+ *
  *	@net_notifier_list:	List of per-net netdev notifier block
  *				that follow this device when it is moved
  *				to another network namespace.
@@ -2372,7 +2374,7 @@ struct net_device {
 	bool			proto_down;
 	unsigned		wol_enabled:1;
 	unsigned		threaded:1;
-
+	unsigned		module_fw_flash_in_progress:1;
 	struct list_head	net_notifier_list;
 
 #if IS_ENABLED(CONFIG_MACSEC)
-- 
2.43.0