Re: [PATCH BlueZ v4 1/9] shared/gatt-db: Expose gatt_db_attribute

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Hi Luiz,

On Sun, Nov 2, 2014 at 11:08 AM, Luiz Augusto von Dentz
<luiz.dentz@xxxxxxxxx> wrote:
> Hi,
>
> On Fri, Oct 31, 2014 at 11:06 PM, Michael Janssen <jamuraa@xxxxxxxxxx> wrote:
>> Hi Luiz,
>>
>> On Fri, Oct 31, 2014 at 11:27 AM, Arman Uguray <armansito@xxxxxxxxxxxx> wrote:
>>> Hi Luiz,
>>>
>>>> On Fri, Oct 31, 2014 at 6:39 AM, Luiz Augusto von Dentz <luiz.dentz@xxxxxxxxx> wrote:
>>>> From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
>>>>
>>>> This is the new API to reduce the lookups in gatt_db and make it
>>>> a little bit more convenient for batch operations, so the general idea
>>>> is to be able to get a hold of it via gatt_db_get_attribute but also
>>>> replace the handles in the queues with proper attributes so the server
>>>> code don't have to lookup again when reading/writing, checking
>>>> permissions, or any other operation that can be done directly.
>>>> ---
>>>> v2: Address problems gatt_db_attribute_read and gatt_db_attribute_write
>>>> pointed out by Arman.
>>>> v3: Allow gatt_db_attribute_read to work if offset equals to value length.
>>>> v4: Fix using attribute handle for service related operations.
>>>>
>>>>  src/shared/gatt-db.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
>>>>  src/shared/gatt-db.h | 36 ++++++++++++++++++++++++++++++++++++
>>>>  2 files changed, 87 insertions(+)
>>>>
>>>> diff --git a/src/shared/gatt-db.c b/src/shared/gatt-db.c
>>>> index 6b5e84c..3ade7a9 100644
>>>> --- a/src/shared/gatt-db.c
>>>> +++ b/src/shared/gatt-db.c
>>>> @@ -802,3 +802,54 @@ bool gatt_db_get_attribute_permissions(struct gatt_db *db, uint16_t handle,
>>>>         return true;
>>>>
>>>>  }
>>>> +
>>>> +struct gatt_db_attribute *gatt_db_get_attribute(struct gatt_db *db,
>>>> +                                                       uint16_t handle)
>>>> +{
>>>> +       return NULL;
>>>> +}
>>>> +
>>>> +const bt_uuid_t *gatt_db_attribute_get_type(struct gatt_db_attribute *attrib)
>>>> +{
>>>> +       return NULL;
>>>> +}
>>>> +
>>>> +uint16_t gatt_db_attribute_get_handle(struct gatt_db_attribute *attrib)
>>>> +{
>>>> +       return 0;
>>>> +}
>>>> +
>>>> +bool gatt_db_attribute_get_service_uuid(struct gatt_db_attribute *attrib,
>>>> +                                                       bt_uuid_t *uuid)
>>>> +{
>>>> +       return false;
>>>> +}
>>>> +
>>>> +bool gatt_db_attribute_get_service_handles(struct gatt_db_attribute *attrib,
>>>> +                                               uint16_t *start_handle,
>>>> +                                               uint16_t *end_handle)
>>>> +{
>>>> +       return false;
>>>> +}
>>>> +
>>>> +bool gatt_db_attribute_get_permissions(struct gatt_db_attribute *attrib,
>>>> +                                                       uint32_t *permissions)
>>>> +{
>>>> +       return false;
>>>> +}
>>>> +
>>>> +bool gatt_db_attribute_read(struct gatt_db_attribute *attrib, uint16_t offset,
>>>> +                               uint8_t opcode, bdaddr_t *bdaddr,
>>>> +                               gatt_db_attribute_read_t func, void *user_data)
>>>> +{
>>>> +       return false;
>>>> +}
>>>> +
>>>> +bool gatt_db_attribute_write(struct gatt_db_attribute *attrib, uint16_t offset,
>>>> +                                       const uint8_t *value, size_t len,
>>>> +                                       uint8_t opcode, bdaddr_t *bdaddr,
>>>> +                                       gatt_db_attribute_write_t func,
>>>> +                                       void *user_data)
>>>> +{
>>>> +       return false;
>>>> +}
>>>> diff --git a/src/shared/gatt-db.h b/src/shared/gatt-db.h
>>>> index 8d18434..15be67f 100644
>>>> --- a/src/shared/gatt-db.h
>>>> +++ b/src/shared/gatt-db.h
>>>> @@ -96,3 +96,39 @@ bool gatt_db_get_service_uuid(struct gatt_db *db, uint16_t handle,
>>>>
>>>>  bool gatt_db_get_attribute_permissions(struct gatt_db *db, uint16_t handle,
>>>>                                                         uint32_t *permissions);
>>>> +
>>>> +struct gatt_db_attribute;
>>>> +
>>>> +struct gatt_db_attribute *gatt_db_get_attribute(struct gatt_db *db,
>>>> +                                                       uint16_t handle);
>>>> +
>>>> +const bt_uuid_t *gatt_db_attribute_get_type(struct gatt_db_attribute *attrib);
>>>> +
>>>> +uint16_t gatt_db_attribute_get_handle(struct gatt_db_attribute *attrib);
>>>> +
>>>> +bool gatt_db_attribute_get_service_uuid(struct gatt_db_attribute *attrib,
>>>> +                                                       bt_uuid_t *uuid);
>>>> +
>>>> +bool gatt_db_attribute_get_service_handles(struct gatt_db_attribute *attrib,
>>>> +                                               uint16_t *start_handle,
>>>> +                                               uint16_t *end_handle);
>>>> +
>>>> +bool gatt_db_attribute_get_permissions(struct gatt_db_attribute *attrib,
>>>> +                                                       uint32_t *permissions);
>>>> +
>>>> +typedef void (*gatt_db_attribute_read_t) (struct gatt_db_attribute *attrib,
>>>> +                                       int err, uint8_t *value, size_t length,
>>>> +                                       void *user_data);
>>>> +
>>>> +bool gatt_db_attribute_read(struct gatt_db_attribute *attrib, uint16_t offset,
>>>> +                               uint8_t opcode, bdaddr_t *bdaddr,
>>>> +                               gatt_db_attribute_read_t func, void *user_data);
>>>> +
>>>> +typedef void (*gatt_db_attribute_write_t) (struct gatt_db_attribute *attrib,
>>>> +                                               int err, void *user_data);
>>>> +
>>>> +bool gatt_db_attribute_write(struct gatt_db_attribute *attrib, uint16_t offset,
>>>> +                                       const uint8_t *value, size_t len,
>>>> +                                       uint8_t opcode, bdaddr_t *bdaddr,
>>>> +                                       gatt_db_attribute_write_t func,
>>>> +                                       void *user_data);
>>>> --
>>>> 1.9.3
>>>>
>>>> --
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>>>
>>> Patch set looks good to me. You can go ahead and apply if Michael,
>>> Marcin, and others are also fine with it.
>>>
>>> Cheers,
>>> Arman
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
>>> the body of a message to majordomo@xxxxxxxxxxxxxxx
>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>> These patches look good with the changes, unless Marcin has problems go for it.
>>
>> --
>> Michael Janssen
>
> Pushed.
>
> --
> Luiz Augusto von Dentz

Now, the next bit that my gatt-server implementation is blocked on is
passing the result callback to gatt_db_read_t and gatt_db_write_t. If
we just get that part done first then I can rebase and reupload my
gatt-server patches.

Cheers,
Arman
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