2014-06-06 10:18:00

by Kiran Kumar Raparthy

Subject: [RFC] Bluetooth: Add ACL MTU, available buffers and total buffers to hci_conn_info.

From: Nick Pelly <[email protected]>

Add ACL MTU, available buffers and total buffers to hci_conn_info.

This provides userspace debugging tools access to ACL flow control state.

This is one of the number of patches from the Android AOSP common.git tree,
which is used on almost all Android devices. so I wanted to submit it for
review to see if it should go upstream.

Cc: Marcel Holtmann <[email protected]>
Cc: Gustavo Padovan <[email protected]>
Cc: Johan Hedberg <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: Android Kernel Team <[email protected]>
Cc: John Stultz <[email protected]>
Signed-off-by: Nick Pelly <[email protected]>
[kiran: Added context to commit message]
Signed-off-by: Kiran Raparthy <[email protected]>
---
include/net/bluetooth/hci.h | 3 +++
net/bluetooth/hci_conn.c | 18 ++++++++++++++++++
2 files changed, 21 insertions(+)

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index be150cf..67dc0fb 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -1830,6 +1830,9 @@ struct hci_conn_info {
__u8 out;
__u16 state;
__u32 link_mode;
+ __u32 mtu;
+ __u32 cnt;
+ __u32 pkts;
};

struct hci_dev_req {
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 521fd4f..c2ba0fe 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1064,6 +1064,15 @@ int hci_get_conn_list(void __user *arg)
(ci + n)->out = c->out;
(ci + n)->state = c->state;
(ci + n)->link_mode = c->link_mode;
+ if (c->type == SCO_LINK) {
+ (ci + n)->mtu = hdev->sco_mtu;
+ (ci + n)->cnt = hdev->sco_cnt;
+ (ci + n)->pkts = hdev->sco_pkts;
+ } else {
+ (ci + n)->mtu = hdev->acl_mtu;
+ (ci + n)->cnt = hdev->acl_cnt;
+ (ci + n)->pkts = hdev->acl_pkts;
+ }
if (++n >= req.conn_num)
break;
}
@@ -1100,6 +1109,15 @@ int hci_get_conn_info(struct hci_dev *hdev, void __user *arg)
ci.out = conn->out;
ci.state = conn->state;
ci.link_mode = conn->link_mode;
+ if (req.type == SCO_LINK) {
+ ci.mtu = hdev->sco_mtu;
+ ci.cnt = hdev->sco_cnt;
+ ci.pkts = hdev->sco_pkts;
+ } else {
+ ci.mtu = hdev->acl_mtu;
+ ci.cnt = hdev->acl_cnt;
+ ci.pkts = hdev->acl_pkts;
+ }
}
hci_dev_unlock(hdev);

--
1.8.2.1

2014-06-06 10:44:55

by Marcel Holtmann

Subject: Re: [RFC] Bluetooth: Add ACL MTU, available buffers and total buffers to hci_conn_info.

Hi Kiran,

> Add ACL MTU, available buffers and total buffers to hci_conn_info.
>
> This provides userspace debugging tools access to ACL flow control state.
>
> This is one of the number of patches from the Android AOSP common.git tree,
> which is used on almost all Android devices. so I wanted to submit it for
> review to see if it should go upstream.
>
> Cc: Marcel Holtmann <[email protected]>
> Cc: Gustavo Padovan <[email protected]>
> Cc: Johan Hedberg <[email protected]>
> Cc: David S. Miller <[email protected]>
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: Android Kernel Team <[email protected]>
> Cc: John Stultz <[email protected]>
> Signed-off-by: Nick Pelly <[email protected]>
> [kiran: Added context to commit message]
> Signed-off-by: Kiran Raparthy <[email protected]>
> ---
> include/net/bluetooth/hci.h | 3 +++
> net/bluetooth/hci_conn.c | 18 ++++++++++++++++++
> 2 files changed, 21 insertions(+)

this would break existing API and can not be accepted. NAK.

Regards

Marcel