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authorAndrei Emeltchenko <andrei.emeltchenko@intel.com>2012-09-27 18:26:12 +0400
committerGustavo Padovan <gustavo.padovan@collabora.co.uk>2012-09-28 00:12:46 +0400
commit52c0d6e56b634b195e377192182391d526cdd5e4 (patch)
tree24a32bc650f821d9aeadf90c7891285f50778774
parent3161ae1c72f03b021bc67504c13025626c26d30c (diff)
downloadlinux-52c0d6e56b634b195e377192182391d526cdd5e4.tar.xz
Bluetooth: AMP: Remote AMP ctrl definitions
Create remote AMP controllers structure. It is used to keep information about discovered remote AMP controllers by A2MP protocol. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
-rw-r--r--include/net/bluetooth/a2mp.h3
-rw-r--r--include/net/bluetooth/amp.h15
-rw-r--r--net/bluetooth/a2mp.c5
-rw-r--r--net/bluetooth/amp.c79
4 files changed, 102 insertions, 0 deletions
diff --git a/include/net/bluetooth/a2mp.h b/include/net/bluetooth/a2mp.h
index d5476719fa4c..99c7389b9189 100644
--- a/include/net/bluetooth/a2mp.h
+++ b/include/net/bluetooth/a2mp.h
@@ -33,6 +33,9 @@ struct amp_mgr {
__u8 handle;
enum amp_mgr_state state;
unsigned long flags;
+
+ struct list_head amp_ctrls;
+ struct mutex amp_ctrls_lock;
};
struct a2mp_cmd {
diff --git a/include/net/bluetooth/amp.h b/include/net/bluetooth/amp.h
index 3414dfdc404c..f57854f0786d 100644
--- a/include/net/bluetooth/amp.h
+++ b/include/net/bluetooth/amp.h
@@ -14,6 +14,21 @@
#ifndef __AMP_H
#define __AMP_H
+struct amp_ctrl {
+ struct list_head list;
+ struct kref kref;
+ __u8 id;
+ __u16 assoc_len_so_far;
+ __u16 assoc_rem_len;
+ __u16 assoc_len;
+ __u8 *assoc;
+};
+
+int amp_ctrl_put(struct amp_ctrl *ctrl);
+struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr);
+struct amp_ctrl *amp_ctrl_lookup(struct amp_mgr *mgr, u8 id);
+void amp_ctrl_list_flush(struct amp_mgr *mgr);
+
struct hci_conn *phylink_add(struct hci_dev *hdev, struct amp_mgr *mgr,
u8 remote_id);
diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c
index f04c44146663..35e188c7a441 100644
--- a/net/bluetooth/a2mp.c
+++ b/net/bluetooth/a2mp.c
@@ -594,6 +594,7 @@ static void amp_mgr_destroy(struct kref *kref)
list_del(&mgr->list);
mutex_unlock(&amp_mgr_list_lock);
+ amp_ctrl_list_flush(mgr);
kfree(mgr);
}
@@ -630,6 +631,10 @@ static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn)
kref_init(&mgr->kref);
+ /* Remote AMP ctrl list initialization */
+ INIT_LIST_HEAD(&mgr->amp_ctrls);
+ mutex_init(&mgr->amp_ctrls_lock);
+
mutex_lock(&amp_mgr_list_lock);
list_add(&mgr->list, &amp_mgr_list);
mutex_unlock(&amp_mgr_list_lock);
diff --git a/net/bluetooth/amp.c b/net/bluetooth/amp.c
index 50a7b2fb8bf3..8ef912c36224 100644
--- a/net/bluetooth/amp.c
+++ b/net/bluetooth/amp.c
@@ -17,6 +17,85 @@
#include <net/bluetooth/a2mp.h>
#include <net/bluetooth/amp.h>
+/* Remote AMP Controllers interface */
+static void amp_ctrl_get(struct amp_ctrl *ctrl)
+{
+ BT_DBG("ctrl %p orig refcnt %d", ctrl,
+ atomic_read(&ctrl->kref.refcount));
+
+ kref_get(&ctrl->kref);
+}
+
+static void amp_ctrl_destroy(struct kref *kref)
+{
+ struct amp_ctrl *ctrl = container_of(kref, struct amp_ctrl, kref);
+
+ BT_DBG("ctrl %p", ctrl);
+
+ kfree(ctrl->assoc);
+ kfree(ctrl);
+}
+
+int amp_ctrl_put(struct amp_ctrl *ctrl)
+{
+ BT_DBG("ctrl %p orig refcnt %d", ctrl,
+ atomic_read(&ctrl->kref.refcount));
+
+ return kref_put(&ctrl->kref, &amp_ctrl_destroy);
+}
+
+struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr)
+{
+ struct amp_ctrl *ctrl;
+
+ ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
+ if (!ctrl)
+ return NULL;
+
+ mutex_lock(&mgr->amp_ctrls_lock);
+ list_add(&ctrl->list, &mgr->amp_ctrls);
+ mutex_unlock(&mgr->amp_ctrls_lock);
+
+ kref_init(&ctrl->kref);
+
+ BT_DBG("mgr %p ctrl %p", mgr, ctrl);
+
+ return ctrl;
+}
+
+void amp_ctrl_list_flush(struct amp_mgr *mgr)
+{
+ struct amp_ctrl *ctrl, *n;
+
+ BT_DBG("mgr %p", mgr);
+
+ mutex_lock(&mgr->amp_ctrls_lock);
+ list_for_each_entry_safe(ctrl, n, &mgr->amp_ctrls, list) {
+ list_del(&ctrl->list);
+ amp_ctrl_put(ctrl);
+ }
+ mutex_unlock(&mgr->amp_ctrls_lock);
+}
+
+struct amp_ctrl *amp_ctrl_lookup(struct amp_mgr *mgr, u8 id)
+{
+ struct amp_ctrl *ctrl;
+
+ BT_DBG("mgr %p id %d", mgr, id);
+
+ mutex_lock(&mgr->amp_ctrls_lock);
+ list_for_each_entry(ctrl, &mgr->amp_ctrls, list) {
+ if (ctrl->id == id) {
+ amp_ctrl_get(ctrl);
+ mutex_unlock(&mgr->amp_ctrls_lock);
+ return ctrl;
+ }
+ }
+ mutex_unlock(&mgr->amp_ctrls_lock);
+
+ return NULL;
+}
+
/* Physical Link interface */
static u8 __next_handle(struct amp_mgr *mgr)
{