From bdc6fe5bb1d1c245fc8eec6f83c77ca31fda7778 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Sun, 28 Apr 2019 19:37:16 +0200 Subject: [PATCH] dsa: Keep link list of tag drivers Let the tag drivers register themselves with the DSA core, keeping them in a linked list. Signed-off-by: Andrew Lunn v2 Signed-off-by: David S. Miller --- net/dsa/dsa.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index 34becafbd37b..32778df1be27 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -27,6 +27,9 @@ #include "dsa_priv.h" +static LIST_HEAD(dsa_tag_drivers_list); +static DEFINE_MUTEX(dsa_tag_drivers_lock); + static struct sk_buff *dsa_slave_notag_xmit(struct sk_buff *skb, struct net_device *dev) { @@ -76,15 +79,40 @@ const struct dsa_device_ops *dsa_device_ops[DSA_TAG_LAST] = { [DSA_TAG_PROTO_NONE] = &none_ops, }; +static void dsa_tag_driver_register(struct dsa_tag_driver *dsa_tag_driver, + struct module *owner) +{ + dsa_tag_driver->owner = owner; + + mutex_lock(&dsa_tag_drivers_lock); + list_add_tail(&dsa_tag_driver->list, &dsa_tag_drivers_list); + mutex_unlock(&dsa_tag_drivers_lock); +} + void dsa_tag_drivers_register(struct dsa_tag_driver *dsa_tag_driver_array[], unsigned int count, struct module *owner) { + unsigned int i; + + for (i = 0; i < count; i++) + dsa_tag_driver_register(dsa_tag_driver_array[i], owner); +} + +static void dsa_tag_driver_unregister(struct dsa_tag_driver *dsa_tag_driver) +{ + mutex_lock(&dsa_tag_drivers_lock); + list_del(&dsa_tag_driver->list); + mutex_unlock(&dsa_tag_drivers_lock); } EXPORT_SYMBOL_GPL(dsa_tag_drivers_register); void dsa_tag_drivers_unregister(struct dsa_tag_driver *dsa_tag_driver_array[], unsigned int count) { + unsigned int i; + + for (i = 0; i < count; i++) + dsa_tag_driver_unregister(dsa_tag_driver_array[i]); } EXPORT_SYMBOL_GPL(dsa_tag_drivers_unregister); -- 2.30.2