From: Vladimir Oltean <vladimir.olt...@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.olt...@nxp.com>
---
Changes in v3:
None.
Changes in v2:
None.
include/net/dsa.h | 1 +
net/dsa/dsa2.c | 21 +++++++++++++++++++++
2 files changed, 22 insertions(+)
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;
--
2.17.1
