Message ID | 20200503221228.10928-4-olteanv@gmail.com |
---|---|
State | Deferred |
Delegated to: | David Miller |
Headers | show |
Series | Cross-chip bridging for disjoint DSA trees | expand |
On 5/3/2020 3:12 PM, Vladimir Oltean wrote: > From: Vladimir Oltean <vladimir.oltean@nxp.com> > > 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>
diff --git a/include/net/dsa.h b/include/net/dsa.h index bd5561dacb13..c5e2530f54c9 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -671,6 +671,7 @@ 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); diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c index 9a271a58a41d..07e01b195975 100644 --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -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;