mirror of https://gitee.com/openkylin/linux.git
Bluetooth: 6lowpan: Remove PSM setting code
Removing PSM setting debugfs interface as the IPSP has a well defined PSM value that should be used. The patch introduces enable flag that can be used to toggle 6lowpan on/off. Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Jukka Rissanen
Marcel Holtmann
parent
e12af489b9
commit
7b2ed60ed4
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@ -31,7 +31,7 @@
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#define VERSION "0.1"
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static struct dentry *lowpan_psm_debugfs;
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static struct dentry *lowpan_enable_debugfs;
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static struct dentry *lowpan_control_debugfs;
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#define IFACE_NAME_TEMPLATE "bt%d"
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@ -55,11 +55,7 @@ struct skb_cb {
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static LIST_HEAD(bt_6lowpan_devices);
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static DEFINE_SPINLOCK(devices_lock);
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/* If psm is set to 0 (default value), then 6lowpan is disabled.
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* Other values are used to indicate a Protocol Service Multiplexer
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* value for 6lowpan.
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*/
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static u16 psm_6lowpan;
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static bool enable_6lowpan;
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/* We are listening incoming connections via this channel
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*/
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@ -761,7 +757,7 @@ static bool is_bt_6lowpan(struct hci_conn *hcon)
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if (hcon->type != LE_LINK)
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return false;
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if (!psm_6lowpan)
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if (!enable_6lowpan)
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return false;
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return true;
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@ -1085,7 +1081,7 @@ static int bt_6lowpan_connect(bdaddr_t *addr, u8 dst_type)
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if (!pchan)
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return -EINVAL;
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err = l2cap_chan_connect(pchan, cpu_to_le16(psm_6lowpan), 0,
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err = l2cap_chan_connect(pchan, cpu_to_le16(L2CAP_PSM_IPSP), 0,
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addr, dst_type);
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BT_DBG("chan %p err %d", pchan, err);
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@ -1118,7 +1114,7 @@ static struct l2cap_chan *bt_6lowpan_listen(void)
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struct l2cap_chan *pchan;
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int err;
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if (psm_6lowpan == 0)
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if (!enable_6lowpan)
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return NULL;
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pchan = chan_get();
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@ -1130,10 +1126,9 @@ static struct l2cap_chan *bt_6lowpan_listen(void)
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atomic_set(&pchan->nesting, L2CAP_NESTING_PARENT);
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BT_DBG("psm 0x%04x chan %p src type %d", psm_6lowpan, pchan,
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pchan->src_type);
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BT_DBG("chan %p src type %d", pchan, pchan->src_type);
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err = l2cap_add_psm(pchan, addr, cpu_to_le16(psm_6lowpan));
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err = l2cap_add_psm(pchan, addr, cpu_to_le16(L2CAP_PSM_IPSP));
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if (err) {
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l2cap_chan_put(pchan);
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BT_ERR("psm cannot be added err %d", err);
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@ -1219,22 +1214,23 @@ static void disconnect_all_peers(void)
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spin_unlock(&devices_lock);
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}
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struct set_psm {
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struct set_enable {
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struct work_struct work;
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u16 psm;
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bool flag;
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};
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static void do_psm_set(struct work_struct *work)
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static void do_enable_set(struct work_struct *work)
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{
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struct set_psm *set_psm = container_of(work, struct set_psm, work);
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struct set_enable *set_enable = container_of(work,
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struct set_enable, work);
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if (set_psm->psm == 0 || psm_6lowpan != set_psm->psm)
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if (!set_enable->flag || enable_6lowpan != set_enable->flag)
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/* Disconnect existing connections if 6lowpan is
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* disabled (psm = 0), or if psm changes.
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* disabled
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*/
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disconnect_all_peers();
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psm_6lowpan = set_psm->psm;
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enable_6lowpan = set_enable->flag;
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if (listen_chan) {
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l2cap_chan_close(listen_chan, 0);
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@ -1243,33 +1239,33 @@ static void do_psm_set(struct work_struct *work)
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listen_chan = bt_6lowpan_listen();
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kfree(set_psm);
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kfree(set_enable);
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}
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static int lowpan_psm_set(void *data, u64 val)
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static int lowpan_enable_set(void *data, u64 val)
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{
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struct set_psm *set_psm;
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struct set_enable *set_enable;
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set_psm = kzalloc(sizeof(*set_psm), GFP_KERNEL);
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if (!set_psm)
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set_enable = kzalloc(sizeof(*set_enable), GFP_KERNEL);
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if (!set_enable)
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return -ENOMEM;
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set_psm->psm = val;
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INIT_WORK(&set_psm->work, do_psm_set);
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set_enable->flag = !!val;
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INIT_WORK(&set_enable->work, do_enable_set);
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schedule_work(&set_psm->work);
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schedule_work(&set_enable->work);
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return 0;
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}
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static int lowpan_psm_get(void *data, u64 *val)
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static int lowpan_enable_get(void *data, u64 *val)
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{
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*val = psm_6lowpan;
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*val = enable_6lowpan;
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return 0;
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}
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DEFINE_SIMPLE_ATTRIBUTE(lowpan_psm_fops, lowpan_psm_get,
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lowpan_psm_set, "%llu\n");
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DEFINE_SIMPLE_ATTRIBUTE(lowpan_enable_fops, lowpan_enable_get,
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lowpan_enable_set, "%llu\n");
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static ssize_t lowpan_control_write(struct file *fp,
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const char __user *user_buffer,
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@ -1439,9 +1435,9 @@ static struct notifier_block bt_6lowpan_dev_notifier = {
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static int __init bt_6lowpan_init(void)
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{
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lowpan_psm_debugfs = debugfs_create_file("6lowpan_psm", 0644,
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bt_debugfs, NULL,
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&lowpan_psm_fops);
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lowpan_enable_debugfs = debugfs_create_file("6lowpan_enable", 0644,
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bt_debugfs, NULL,
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&lowpan_enable_fops);
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lowpan_control_debugfs = debugfs_create_file("6lowpan_control", 0644,
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bt_debugfs, NULL,
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&lowpan_control_fops);
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@ -1451,7 +1447,7 @@ static int __init bt_6lowpan_init(void)
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static void __exit bt_6lowpan_exit(void)
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{
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debugfs_remove(lowpan_psm_debugfs);
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debugfs_remove(lowpan_enable_debugfs);
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debugfs_remove(lowpan_control_debugfs);
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if (listen_chan) {
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