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Bluetooth: A2MP: Create amp_mgr global list

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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>
This commit is contained in:
Andrei Emeltchenko 2012-09-27 17:26:07 +03:00 committed by Gustavo Padovan
parent b078b56429
commit f97268fccd
2 changed files with 39 additions and 0 deletions
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10
include/net/bluetooth/a2mp.h
View File

@ -19,12 +19,18 @@
#define A2MP_FEAT_EXT 0x8000
enum amp_mgr_state {
READ_LOC_AMP_INFO,
};
struct amp_mgr {
struct list_head list;
struct l2cap_conn *l2cap_conn;
struct l2cap_chan *a2mp_chan;
struct kref kref;
__u8 ident;
__u8 handle;
enum amp_mgr_state state;
unsigned long flags;
};
@ -118,9 +124,13 @@ struct a2mp_physlink_rsp {
#define A2MP_STATUS_PHYS_LINK_EXISTS 0x05
#define A2MP_STATUS_SECURITY_VIOLATION 0x06
extern struct list_head amp_mgr_list;
extern struct mutex amp_mgr_list_lock;
void amp_mgr_get(struct amp_mgr *mgr);
int amp_mgr_put(struct amp_mgr *mgr);
struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
struct sk_buff *skb);
struct amp_mgr *amp_mgr_lookup_by_state(u8 state);
#endif /* __A2MP_H */

29
net/bluetooth/a2mp.c
View File

@ -17,6 +17,10 @@
#include <net/bluetooth/l2cap.h>
#include <net/bluetooth/a2mp.h>
/* Global AMP Manager list */
LIST_HEAD(amp_mgr_list);
DEFINE_MUTEX(amp_mgr_list_lock);
/* A2MP build & send command helper functions */
static struct a2mp_cmd *__a2mp_build(u8 code, u8 ident, u16 len, void *data)
{
@ -516,6 +520,10 @@ static void amp_mgr_destroy(struct kref *kref)
BT_DBG("mgr %p", mgr);
mutex_lock(&amp_mgr_list_lock);
list_del(&mgr->list);
mutex_unlock(&amp_mgr_list_lock);
kfree(mgr);
}
@ -552,6 +560,10 @@ static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn)
kref_init(&mgr->kref);
mutex_lock(&amp_mgr_list_lock);
list_add(&mgr->list, &amp_mgr_list);
mutex_unlock(&amp_mgr_list_lock);
return mgr;
}
@ -570,3 +582,20 @@ struct l2cap_chan *a2mp_channel_create(struct l2cap_conn *conn,
return mgr->a2mp_chan;
}
struct amp_mgr *amp_mgr_lookup_by_state(u8 state)
{
struct amp_mgr *mgr;
mutex_lock(&amp_mgr_list_lock);
list_for_each_entry(mgr, &amp_mgr_list, list) {
if (mgr->state == state) {
amp_mgr_get(mgr);
mutex_unlock(&amp_mgr_list_lock);
return mgr;
}
}
mutex_unlock(&amp_mgr_list_lock);
return NULL;
}