List DSA port structures in their switch structure, so that drivers can
iterate on them to retrieve information such as their ports membership.
Signed-off-by: Vivien Didelot <vivien.dide...@savoirfairelinux.com>
---
include/net/dsa.h | 9 +++++++++
net/dsa/dsa.c | 4 ++++
2 files changed, 13 insertions(+)
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 69e467c..5f2e7df 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -32,6 +32,11 @@ enum dsa_tag_protocol {
#define DSA_MAX_SWITCHES 4
#define DSA_MAX_PORTS 12
+#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.
@@ -123,6 +128,8 @@ struct dsa_switch_tree {
};
struct dsa_port {
+ struct list_head list;
+
struct dsa_switch *ds;
int port;
@@ -173,6 +180,8 @@ struct dsa_switch {
u32 phys_mii_mask;
struct mii_bus *slave_mii_bus;
struct net_device *ports[DSA_MAX_PORTS];
+
+ struct list_head dp;
};
static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p)
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 222494c..3daffb6 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -225,6 +225,8 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
struct device *parent)
int index = ds->index;
int i, ret;
+ INIT_LIST_HEAD(&ds->dp);
+
/*
* Validate supplied switch configuration.
*/
@@ -238,6 +240,8 @@ static int dsa_switch_setup_one(struct dsa_switch *ds,
struct device *parent)
dp[i]->ds = ds;
dp[i]->port = i;
+ list_add_tail(&dp[i]->list, &ds->dp);
+
name = pd->port_names[i];
if (name == NULL)
continue;
--
2.8.0
