netdev - Re: [Bluez-devel] forcing SCO connection patch

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Message-Id: <B96BD3FE-F490-4AD5-9315-ECD42CE9C728@holtmann.org>
Date:	Tue, 26 Feb 2008 20:43:30 +0100
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Louis JANG <louis@...i.com>
Cc:	Dave Young <hidave.darkstar@...il.com>,
	linux-bluetooth@...r.kernel.org,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	bmidgley@...il.com, David Miller <davem@...emloft.net>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: [Bluez-devel] forcing SCO connection patch

Hi Loius,

>>> --- linux-2.6.23/net/bluetooth/hci_event.c.orig 2008-02-25
>>> 17:17:11.000000000 +0900
>>> +++ linux-2.6.23/net/bluetooth/hci_event.c 2008-02-25
>>> 17:30:23.000000000 +0900
>>> @@ -1313,8 +1313,17 @@
>>> hci_dev_lock(hdev);
>>>
>>> conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
>>> - if (!conn)
>>> - goto unlock;
>>> + if (!conn) {
>>> + if (ev->link_type != ACL_LINK) {
>>> + __u8 link_type = (ev->link_type == ESCO_LINK) ? SCO_LINK :  
>>> ESCO_LINK;
>>> +
>>> + conn = hci_conn_hash_lookup_ba(hdev, link_type, &ev->bdaddr);
>>> + if (conn)
>>> + conn->type = ev->link_type;
>>> + }
>>> + if (!conn)
>>> + goto unlock;
>>> + }
>>
>> NAK. There is no need to check for ACL_LINK. The sync_complete will
>> only be called for SCO or eSCO connections.
> I see. I removed this check line in the patch.
>
> Thanks.
> Louis JANG
> Signed-off-by: Louis JANG <louis@...i.com>
> --- linux-2.6.23/net/bluetooth/hci_event.c.orig	2008-02-26  
> 12:46:36.000000000 +0900
> +++ linux-2.6.23/net/bluetooth/hci_event.c	2008-02-26  
> 12:47:23.000000000 +0900
> @@ -1313,8 +1313,15 @@
> 	hci_dev_lock(hdev);
>
> 	conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
> -	if (!conn)
> -		goto unlock;
> +	if (!conn) {
> +		__u8 link_type = (ev->link_type == ESCO_LINK) ? SCO_LINK :  
> ESCO_LINK;
> +
> +		conn = hci_conn_hash_lookup_ba(hdev, link_type, &ev->bdaddr);
> +		if (conn)
> +			conn->type = ev->link_type;
> +		else
> +			goto unlock;
> +	}
>
> 	if (!ev->status) {
> 		conn->handle = __le16_to_cpu(ev->handle);

do something like this:

if (!conn) {
	....

	conn = ....
	if (!conn)
		goto unlock;

	conn->type = ev->link_type;
}

And include a description when submitting a patch.

Regards

Marcel

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