net: dsa: introduce a dsa_switch_find function (3b7bc1f0) · Commits · 戴 / test

Somewhat similar to dsa_tree_find, dsa_switch_find returns a dsa_switch structure pointer by searching for its tree index and switch index (the parameters from dsa,member). To be used, for example, by drivers who implement .crosschip_bridge_join and need a reference to the other switch indicated to by the tree_index and sw_index arguments. Signed-off-by:

Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by:

Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:

Jakub Kicinski <kuba@kernel.org>

include/net/dsa.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -672,6 +672,7 @@ static inline bool dsa_can_decode(const struct sk_buff *skb,

		void dsa_unregister_switch(struct dsa_switch *ds);
		int dsa_register_switch(struct dsa_switch *ds);
		struct dsa_switch *dsa_switch_find(int tree_index, int sw_index);
		#ifdef CONFIG_PM_SLEEP
		int dsa_switch_suspend(struct dsa_switch *ds);
		int dsa_switch_resume(struct dsa_switch *ds);

net/dsa/dsa2.c

+21 −0

Original line number	Diff line number	Diff line
		@@ -24,6 +24,27 @@ LIST_HEAD(dsa_tree_list);
		static const struct devlink_ops dsa_devlink_ops = {
		};

		struct dsa_switch *dsa_switch_find(int tree_index, int sw_index)
		{
		struct dsa_switch_tree *dst;
		struct dsa_port *dp;

		list_for_each_entry(dst, &dsa_tree_list, list) {
		if (dst->index != tree_index)
		continue;

		list_for_each_entry(dp, &dst->ports, list) {
		if (dp->ds->index != sw_index)
		continue;

		return dp->ds;
		}
		}

		return NULL;
		}
		EXPORT_SYMBOL_GPL(dsa_switch_find);

		static struct dsa_switch_tree *dsa_tree_find(int index)
		{
		struct dsa_switch_tree *dst;

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