> -----Original Message-----
> From: Intel-wired-lan <[email protected]> On Behalf
> Of Stanislav Fomichev
> Sent: Wednesday, March 18, 2026 4:03 PM
> To: [email protected]
> Cc: [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; Nguyen, Anthony
> L <[email protected]>; Kitszel, Przemyslaw
> <[email protected]>; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected]; Keller,
> Jacob E <[email protected]>; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; linux-
> [email protected]; [email protected]; linux-
> [email protected]; [email protected]
> Subject: [Intel-wired-lan] [PATCH net-next v2 03/13] net: introduce
> ndo_set_rx_mode_async and dev_rx_mode_work
>
> Add ndo_set_rx_mode_async callback that drivers can implement instead
> of the legacy ndo_set_rx_mode. The legacy callback runs under the
> netif_addr_lock spinlock with BHs disabled, preventing drivers from
> sleeping. The async variant runs from a work queue with rtnl_lock and
> netdev_lock_ops held, in fully sleepable context.
>
> When __dev_set_rx_mode() sees ndo_set_rx_mode_async, it schedules
> dev_rx_mode_work instead of calling the driver inline. The work
> function takes two snapshots of each address list (uc/mc) under the
> addr_lock, then drops the lock and calls the driver with the work
> copies. After the driver returns, it reconciles the snapshots back to
> the real lists under the lock.
>
> Signed-off-by: Stanislav Fomichev <[email protected]>
> ---
> Documentation/networking/netdevices.rst | 8 +++
> include/linux/netdevice.h | 20 ++++++
> net/core/dev.c | 94 +++++++++++++++++++++++-
> -
> 3 files changed, 115 insertions(+), 7 deletions(-)
>
> diff --git a/Documentation/networking/netdevices.rst
> b/Documentation/networking/netdevices.rst
> index 35704d115312..dc83d78d3b27 100644
> --- a/Documentation/networking/netdevices.rst
> +++ b/Documentation/networking/netdevices.rst
> @@ -289,6 +289,14 @@ struct net_device synchronization rules
> ndo_set_rx_mode:
> Synchronization: netif_addr_lock spinlock.
> Context: BHs disabled
...
> open_softirq(NET_TX_SOFTIRQ, net_tx_action);
> open_softirq(NET_RX_SOFTIRQ, net_rx_action);
>
> --
> 2.53.0
Reviewed-by: Aleksandr Loktionov <[email protected]>
