Bluetooth: A2MP: Create amp_mgr global list
Create amp_mgr_list global list which will be used by different hci devices to find amp_mgr. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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@ -19,12 +19,18 @@
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#define A2MP_FEAT_EXT 0x8000
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enum amp_mgr_state {
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READ_LOC_AMP_INFO,
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};
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struct amp_mgr {
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struct list_head list;
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struct l2cap_conn *l2cap_conn;
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struct l2cap_chan *a2mp_chan;
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struct kref kref;
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__u8 ident;
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__u8 handle;
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enum amp_mgr_state state;
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unsigned long flags;
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};
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@ -118,9 +124,13 @@ struct a2mp_physlink_rsp {
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#define A2MP_STATUS_PHYS_LINK_EXISTS 0x05
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#define A2MP_STATUS_SECURITY_VIOLATION 0x06
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extern struct list_head amp_mgr_list;
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extern struct mutex amp_mgr_list_lock;
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void amp_mgr_get(struct amp_mgr *mgr);
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int amp_mgr_put(struct amp_mgr *mgr);
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struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
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struct sk_buff *skb);
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struct amp_mgr *amp_mgr_lookup_by_state(u8 state);
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#endif /* __A2MP_H */
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@ -17,6 +17,10 @@
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#include <net/bluetooth/l2cap.h>
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#include <net/bluetooth/a2mp.h>
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/* Global AMP Manager list */
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LIST_HEAD(amp_mgr_list);
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DEFINE_MUTEX(amp_mgr_list_lock);
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/* A2MP build & send command helper functions */
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static struct a2mp_cmd *__a2mp_build(u8 code, u8 ident, u16 len, void *data)
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{
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@ -516,6 +520,10 @@ static void amp_mgr_destroy(struct kref *kref)
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BT_DBG("mgr %p", mgr);
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mutex_lock(&_mgr_list_lock);
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list_del(&mgr->list);
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mutex_unlock(&_mgr_list_lock);
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kfree(mgr);
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}
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@ -552,6 +560,10 @@ static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn)
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kref_init(&mgr->kref);
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mutex_lock(&_mgr_list_lock);
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list_add(&mgr->list, &_mgr_list);
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mutex_unlock(&_mgr_list_lock);
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return mgr;
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}
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@ -570,3 +582,20 @@ struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
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return mgr->a2mp_chan;
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}
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struct amp_mgr *amp_mgr_lookup_by_state(u8 state)
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{
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struct amp_mgr *mgr;
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mutex_lock(&_mgr_list_lock);
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list_for_each_entry(mgr, &_mgr_list, list) {
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if (mgr->state == state) {
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amp_mgr_get(mgr);
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mutex_unlock(&_mgr_list_lock);
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return mgr;
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}
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}
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mutex_unlock(&_mgr_list_lock);
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return NULL;
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}
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