List the registered dsa_switch structures in a "ds" member of the
dsa_switch_tree structure. This allows the drivers to easily iterate on
the DSA switch structures of their related DSA tree.
Signed-off-by: Vivien Didelot <vivien.dide...@savoirfairelinux.com>
---
include/net/dsa.h | 9 +++++++++
net/dsa/dsa.c | 3 +++
2 files changed, 12 insertions(+)
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 389227d..85fac8a 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -32,11 +32,16 @@ enum dsa_tag_protocol {
#define DSA_MAX_SWITCHES 4
#define DSA_MAX_PORTS 12
+
+#define dsa_tree_for_each_switch(_dst, _ds) \
+ list_for_each_entry(_ds, &_dst->ds, list)
+
#define dsa_switch_for_each_port(_ds, _dp, _num_ports) \
for (_dp = list_first_entry(&_ds->dp, typeof(*_dp), list); \
&_dp->list != (&_ds->dp) && _dp->port < _num_ports; \
_dp = list_next_entry(_dp, list))
+
struct dsa_chip_data {
/*
* How to access the switch configuration registers.
@@ -125,6 +130,8 @@ struct dsa_switch_tree {
* Data for the individual switch chips.
*/
struct dsa_switch *switches[DSA_MAX_SWITCHES];
+
+ struct list_head ds;
};
struct dsa_port {
@@ -137,6 +144,8 @@ struct dsa_port {
};
struct dsa_switch {
+ struct list_head list;
+
/*
* Parent switch tree, and switch index.
*/
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index aa4a61a..b0055c7 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -842,6 +842,8 @@ static int dsa_setup_dst(struct dsa_switch_tree *dst,
struct net_device *dev,
int i;
unsigned configured = 0;
+ INIT_LIST_HEAD(&dst->ds);
+
dst->pd = pd;
dst->master_netdev = dev;
dst->cpu_switch = -1;
@@ -858,6 +860,7 @@ static int dsa_setup_dst(struct dsa_switch_tree *dst,
struct net_device *dev,
}
dst->switches[i] = ds;
+ list_add_tail(&ds->list, &dst->ds);
++configured;
}
--
2.8.0
