From 4b623f9f0f59652ea71fcb27d60b4c3b65126dbb Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Wed, 9 Oct 2024 10:09:49 +0200 Subject: net-shapers: implement NL get operation Introduce the basic infrastructure to implement the net-shaper core functionality. Each network devices carries a net-shaper cache, the NL get() operation fetches the data from such cache. The cache is initially empty, will be fill by the set()/group() operation implemented later and is destroyed at device cleanup time. The net_shaper_fill_handle(), net_shaper_ctx_init(), and net_shaper_generic_pre() implementations handle generic index type attributes, despite the current caller always pass a constant value to avoid more noise in later patches using them with different attributes. Reviewed-by: Jakub Kicinski Reviewed-by: Jiri Pirko Signed-off-by: Paolo Abeni Link: https://patch.msgid.link/ddd10fd645a9367803ad02fca4a5664ea5ace170.1728460186.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski --- include/linux/netdevice.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'include/linux') diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 3baf8e539b6f..e6b93d01e631 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1603,6 +1603,14 @@ struct net_device_ops { int (*ndo_hwtstamp_set)(struct net_device *dev, struct kernel_hwtstamp_config *kernel_config, struct netlink_ext_ack *extack); + +#if IS_ENABLED(CONFIG_NET_SHAPER) + /** + * @net_shaper_ops: Device shaping offload operations + * see include/net/net_shapers.h + */ + const struct net_shaper_ops *net_shaper_ops; +#endif }; /** @@ -2406,6 +2414,19 @@ struct net_device { u64 max_pacing_offload_horizon; + /** + * @lock: protects @net_shaper_hierarchy, feel free to use for other + * netdev-scope protection. Ordering: take after rtnl_lock. + */ + struct mutex lock; + +#if IS_ENABLED(CONFIG_NET_SHAPER) + /** + * @net_shaper_hierarchy: data tracking the current shaper status + * see include/net/net_shapers.h + */ + struct net_shaper_hierarchy *net_shaper_hierarchy; +#endif u8 priv[] ____cacheline_aligned __counted_by(priv_len); } ____cacheline_aligned; -- cgit v1.2.3