2011-08-24 14:05:01

by Peter Hurley

Subject: [RFC 2/4] Bluetooth: Expose hci connections through debugfs

Add "connections" file to "hciX" debugfs directory and output
hci_conn internal state.
---
net/bluetooth/hci_sysfs.c | 46 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 46 insertions(+), 0 deletions(-)

diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 22f1a6c..3d00769 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -542,6 +542,49 @@ static int auto_accept_delay_get(void *data, u64 *val)
DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get,
auto_accept_delay_set, "%llu\n");

+static int connections_show(struct seq_file *f, void *p)
+{
+ struct hci_dev *hdev = f->private;
+ struct hci_conn_hash *h = &hdev->conn_hash;
+ struct list_head *l;
+
+ hci_dev_lock_bh(hdev);
+
+ seq_printf(f, " s a p\n");
+ seq_printf(f, " h t t o s k u s s p r\n");
+ seq_printf(f, " n y a u s e t e e i e\n");
+ seq_printf(f, "Dest l p t t p y h c c n f\n");
+
+ list_for_each(l, &h->list) {
+ struct hci_conn *c;
+ c = list_entry(l, struct hci_conn, list);
+
+ seq_printf(f, "%s %-3d %3s %d %d %d 0x%.2x %d %d %d %2d %d\n",
+ batostr(&c->dst), c->handle,
+ link_typetostr(c->type),
+ c->state, c->out, c->ssp_mode,
+ c->key_type, c->auth_type, c->sec_level,
+ c->pending_sec_level, c->pin_length,
+ atomic_read(&c->devref));
+ }
+
+ hci_dev_unlock_bh(hdev);
+
+ return 0;
+}
+
+static int connections_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, connections_show, inode->i_private);
+}
+
+static const struct file_operations connections_fops = {
+ .open = connections_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
int hci_register_sysfs(struct hci_dev *hdev)
{
struct device *dev = &hdev->dev;
@@ -578,6 +621,9 @@ int hci_register_sysfs(struct hci_dev *hdev)

debugfs_create_file("auto_accept_delay", 0444, hdev->debugfs, hdev,
&auto_accept_delay_fops);
+
+ debugfs_create_file("connections", 0444, hdev->debugfs, hdev,
+ &connections_fops);
return 0;
}

--
1.7.4.1

2011-09-02 17:43:53

by Gustavo Padovan

Subject: Re: [RFC 2/4] Bluetooth: Expose hci connections through debugfs

Hi Peter,

* Peter Hurley <[email protected]> [2011-08-24 10:05:01 -0400]:

> Add "connections" file to "hciX" debugfs directory and output
> hci_conn internal state.

I would like to see an output example in the commit message for this.

Gustavo