diff options
| author | Edward Cree <ecree.xilinx@gmail.com> | 2024-06-27 16:33:51 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-06-28 18:53:21 -0700 |
| commit | 87925151191b64d9623e63ccf11e517eacc99d7d (patch) | |
| tree | 4e4c6614bd25cbc859f6f870a517085a3c63318e /include/linux/ethtool.h | |
| parent | 30a32cdf6b130356805b3193a6208de25cbb2015 (diff) | |
net: ethtool: add a mutex protecting RSS contexts
While this is not needed to serialise the ethtool entry points (which
are all under RTNL), drivers may have cause to asynchronously access
dev->ethtool->rss_ctx; taking dev->ethtool->rss_lock allows them to
do this safely without needing to take the RTNL.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Link: https://patch.msgid.link/7f9c15eb7525bf87af62c275dde3a8570ee8bf0a.1719502240.git.ecree.xilinx@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux/ethtool.h')
| -rw-r--r-- | include/linux/ethtool.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h index 9cdbc8e3ed5c..f74bb0cf8ed1 100644 --- a/include/linux/ethtool.h +++ b/include/linux/ethtool.h @@ -1104,10 +1104,13 @@ int ethtool_virtdev_set_link_ksettings(struct net_device *dev, /** * struct ethtool_netdev_state - per-netdevice state for ethtool features * @rss_ctx: XArray of custom RSS contexts + * @rss_lock: Protects entries in @rss_ctx. May be taken from + * within RTNL. * @wol_enabled: Wake-on-LAN is enabled */ struct ethtool_netdev_state { struct xarray rss_ctx; + struct mutex rss_lock; unsigned wol_enabled:1; }; |