From: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
Define physical link structure. Physical links are managed by AMP
manager inside amp_mgr structure and represent AMP physical links.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@xxxxxxxxx>
---
include/net/bluetooth/a2mp.h | 3 +
include/net/bluetooth/pal.h | 42 +++++++++++++
net/bluetooth/Makefile | 2 +-
net/bluetooth/a2mp.c | 6 ++
net/bluetooth/pal.c | 141 ++++++++++++++++++++++++++++++++++++++++++
5 files changed, 193 insertions(+), 1 deletion(-)
create mode 100644 include/net/bluetooth/pal.h
create mode 100644 net/bluetooth/pal.c
diff --git a/include/net/bluetooth/a2mp.h b/include/net/bluetooth/a2mp.h
index ec77ddc..012f573 100644
--- a/include/net/bluetooth/a2mp.h
+++ b/include/net/bluetooth/a2mp.h
@@ -26,6 +26,9 @@ struct amp_mgr {
__u8 ident;
__u8 handle;
unsigned long flags;
+
+ struct list_head phy_links;
+ struct mutex phy_links_lock;
};
struct a2mp_cmd {
diff --git a/include/net/bluetooth/pal.h b/include/net/bluetooth/pal.h
new file mode 100644
index 0000000..201c501
--- /dev/null
+++ b/include/net/bluetooth/pal.h
@@ -0,0 +1,42 @@
+/*
+ Copyright (c) 2011,2012 Intel Corp.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License version 2 and
+ only version 2 as published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+*/
+
+#ifndef __PAL_H
+#define __PAL_H
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/l2cap.h>
+#include <net/bluetooth/a2mp.h>
+#include <net/bluetooth/amp.h>
+
+struct phy_link {
+ struct list_head list;
+ __u8 local_id;
+ __u8 remote_id;
+ __u8 state;
+ __u8 amp_role;
+ __u8 handle;
+ struct amp_mgr *mgr;
+ struct amp_assoc rem_assoc;
+ struct kref kref;
+};
+
+struct phy_link *phylink_add(struct amp_mgr *mgr, u8 local_id, u8 remote_id,
+ u8 *rem_assoc, u16 assoc_size);
+struct phy_link *phylink_lookup(struct amp_mgr *mgr, u8 local_id, u8 remote_id);
+int phylink_put(struct phy_link *plink);
+void phylink_get(struct phy_link *plink);
+void phylink_list_flush(struct amp_mgr *mgr);
+
+#endif /* __PAL_H */
diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile
index dea6a28..3f76fc2 100644
--- a/net/bluetooth/Makefile
+++ b/net/bluetooth/Makefile
@@ -10,4 +10,4 @@ obj-$(CONFIG_BT_HIDP) += hidp/
bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o \
hci_sock.o hci_sysfs.o l2cap_core.o l2cap_sock.o smp.o sco.o lib.o \
- a2mp.o amp.o
+ a2mp.o amp.o pal.o
diff --git a/net/bluetooth/a2mp.c b/net/bluetooth/a2mp.c
index 99beb95..f711b75 100644
--- a/net/bluetooth/a2mp.c
+++ b/net/bluetooth/a2mp.c
@@ -17,6 +17,7 @@
#include <net/bluetooth/l2cap.h>
#include <net/bluetooth/a2mp.h>
#include <net/bluetooth/amp.h>
+#include <net/bluetooth/pal.h>
/* A2MP build & send command helper functions */
static struct a2mp_cmd *__a2mp_build(u8 code, u8 ident, u16 len, void *data)
@@ -594,6 +595,7 @@ static void amp_mgr_destroy(struct kref *kref)
BT_DBG("mgr %p", mgr);
+ phylink_list_flush(mgr);
kfree(mgr);
}
@@ -628,6 +630,10 @@ static struct amp_mgr *amp_mgr_create(struct l2cap_conn *conn)
conn->hcon->amp_mgr = mgr;
+ /* Phylink initialization */
+ INIT_LIST_HEAD(&mgr->phy_links);
+ mutex_init(&mgr->phy_links_lock);
+
kref_init(&mgr->kref);
return mgr;
diff --git a/net/bluetooth/pal.c b/net/bluetooth/pal.c
new file mode 100644
index 0000000..24fb3aa
--- /dev/null
+++ b/net/bluetooth/pal.c
@@ -0,0 +1,141 @@
+/*
+ Copyright (c) 2011,2012 Intel Corp.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License version 2 and
+ only version 2 as published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+*/
+
+#include <net/bluetooth/pal.h>
+
+enum pal_states {
+ DISCONNECTED,
+ STARTING,
+ CONNECTING,
+ AUTHENTICATING,
+ CONNECTED,
+ DISCONNECTING
+};
+
+/* Physical Link interface */
+void phylink_get(struct phy_link *plink)
+{
+ BT_DBG("plink %p orig refcnt %d", plink,
+ atomic_read(&plink->kref.refcount));
+
+ kref_get(&plink->kref);
+}
+
+static void phylink_destroy(struct kref *kref)
+{
+ struct phy_link *plink = container_of(kref, struct phy_link, kref);
+
+ BT_DBG("plink %p", plink);
+
+ kfree(plink);
+}
+
+int phylink_put(struct phy_link *plink)
+{
+ BT_DBG("plink %p orig refcnt %d", plink,
+ atomic_read(&plink->kref.refcount));
+
+ return kref_put(&plink->kref, &phylink_destroy);
+}
+
+static u8 __next_handle(struct amp_mgr *mgr)
+{
+ if (++mgr->handle == 0)
+ mgr->handle = 1;
+
+ return mgr->handle;
+}
+
+struct phy_link *phylink_add(struct amp_mgr *mgr, u8 local_id, u8 remote_id,
+ u8 *rem_assoc, u16 assoc_size)
+{
+ struct phy_link *plink;
+
+ plink = kzalloc(sizeof(*plink), GFP_KERNEL);
+ if (!plink)
+ return NULL;
+
+ plink->local_id = local_id;
+ plink->remote_id = remote_id;
+ plink->mgr = mgr;
+ plink->handle = __next_handle(mgr);
+
+ plink->rem_assoc.len = min_t(u16, assoc_size, HCI_MAX_AMP_ASSOC_SIZE);
+ memcpy(plink->rem_assoc.data, rem_assoc, plink->rem_assoc.len);
+
+ plink->state = STARTING;
+
+ mutex_lock(&mgr->phy_links_lock);
+ list_add(&plink->list, &mgr->phy_links);
+ mutex_unlock(&mgr->phy_links_lock);
+
+ kref_init(&plink->kref);
+
+ BT_DBG("Physical link %p created", plink);
+
+ return plink;
+}
+
+void phylink_del(struct amp_mgr *mgr, struct phy_link *plink)
+{
+ BT_DBG("phylink %p", plink);
+
+ mutex_lock(&mgr->phy_links_lock);
+ list_del(&plink->list);
+ mutex_unlock(&mgr->phy_links_lock);
+
+ phylink_put(plink);
+}
+
+void phylink_list_flush(struct amp_mgr *mgr)
+{
+ struct phy_link *plink, *n;
+
+ BT_DBG("mgr %p", mgr);
+
+ mutex_lock(&mgr->phy_links_lock);
+ list_for_each_entry_safe(plink, n, &mgr->phy_links, list) {
+ list_del(&plink->list);
+ phylink_put(plink);
+ }
+ mutex_unlock(&mgr->phy_links_lock);
+}
+
+struct phy_link *phylink_lookup(struct amp_mgr *mgr, u8 local_id, u8 remote_id)
+{
+ struct phy_link *plink, *found = NULL;
+
+ mutex_lock(&mgr->phy_links_lock);
+ list_for_each_entry(plink, &mgr->phy_links, list) {
+ /* Closest match */
+ if (!remote_id && plink->local_id == local_id) {
+ found = plink;
+ break;
+ }
+ /* Exact match */
+ if (plink->local_id == local_id &&
+ plink->remote_id == remote_id) {
+ found = plink;
+ break;
+ }
+ }
+ mutex_unlock(&mgr->phy_links_lock);
+
+ BT_DBG("local_id %d remote_id %d plink %p", local_id, remote_id,
+ plink);
+
+ if (found)
+ phylink_get(plink);
+
+ return found;
+}
--
1.7.9.5
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