Re: [PATCH net-next v1 0/4] net: remove rtnl_lock from the callers of queue APIs

Jakub Kicinski
2025-03-08T03:22:36Z

On Fri, 7 Mar 2025 07:57:21 -0800 Stanislav Fomichev wrote:
> All drivers that use queue management APIs already depend on the netdev
> lock. Ultimately, we want to have most of the paths that work with
> specific netdev to be rtnl_lock-free (ethtool mostly in particular).
> Queue API currently has a much smaller API surface, so start with
> rtnl_lock from it:
>
> - add mutex to each dmabuf binding (to replace rtnl_lock)
> - protect global net_devmem_dmabuf_bindings with a new (global) lock
> - move netdev lock management to the callers of netdev_rx_queue_restart
> and drop rtnl_lock

One more note, looks like this silently conflicts with my:
https://lore.kernel.org/all/20250307183006.2312761-1-kuba@kernel.org/

You need to add:

#include <net/netdev_lock.h>

to net/core/netdev_rx_queue.c, otherwise the series together break
the build.