Re: [PATCH v3] core/gatt: Add GATT.Cache config option

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Hi Luiz,

Thanks for the patch. It'd be better if a bit more description is
added to main.conf about the difference between "always" and "yes"
options in terms of unpair/paired devices. The fix looks good to me.

Thanks,
Miao

On Tue, Jun 13, 2017 at 10:44 AM, Vinicius Costa Gomes
<vinicius.gomes@xxxxxxxxx> wrote:
> Hi Luiz,
>
> Luiz Augusto von Dentz <luiz.dentz@xxxxxxxxx> writes:
>> From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
>>
>> This adds GATT.Cache config option to main.conf which can be used
>> to adjust the cache expected behavior of attributes found over GATT.
>> ---
>>  src/device.c  | 28 ++++++++++++++++++++++++++++
>>  src/hcid.h    |  7 +++++++
>>  src/main.c    | 26 +++++++++++++++++++++++++-
>>  src/main.conf |  6 ++++++
>>  4 files changed, 66 insertions(+), 1 deletion(-)
>>
>
> [...]
>
>>
>> +static void parse_gatt_cache(const char *cache)
>> +{
>> +     if (!strcmp(cache, "always")) {
>> +             main_opts.gatt_cache = BT_GATT_CACHE_ALWAYS;
>> +     } else if (!strcmp(cache, "yes")) {
>> +             main_opts.gatt_cache = BT_GATT_CACHE_YES;
>> +     } else if (!strcmp(cache, "no")) {
>> +             main_opts.gatt_cache = BT_GATT_CACHE_NO;
>> +     } else {
>> +             DBG("Invalid value for KeepCache=%s", cache);
>> +     }
>
> [optional] I wonder if making this return the enum, and return the
> default if 'cache' is NULL, would make the code clearer.
>
>> +}
>> +
>>  static void check_config(GKeyFile *config)
>>  {
>> -     const char *valid_groups[] = { "General", "Policy", NULL };
>> +     const char *valid_groups[] = { "General", "Policy", "GATT", NULL };
>>       char **keys;
>>       int i;
>>
>> @@ -357,6 +370,17 @@ static void parse_config(GKeyFile *config)
>>               g_clear_error(&err);
>>       else
>>               main_opts.fast_conn = boolean;
>> +
>> +     str = g_key_file_get_string(config, "GATT", "Cache", &err);
>> +     if (err) {
>> +             g_clear_error(&err);
>> +             main_opts.gatt_cache = BT_GATT_CACHE_ALWAYS;
>> +             return;
>> +     }
>> +
>> +     parse_gatt_cache(str);
>> +
>> +     g_free(str);
>>  }
>>
>>  static void init_defaults(void)
>> diff --git a/src/main.conf b/src/main.conf
>> index a649276..7807a8f 100644
>> --- a/src/main.conf
>> +++ b/src/main.conf
>> @@ -71,6 +71,12 @@
>>  # Defaults to "off"
>>  # Privacy = off
>>
>> +[GATT]
>> +# GATT attribute cache.
>> +# Possible values: always, yes, no
>> +# Default: always
>> +#Cache = always
>> +
>>  [Policy]
>>  #
>>  # The ReconnectUUIDs defines the set of remote services that should try
>> --
>> 2.9.4
>>
>> --
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>
>
> Cheers,
> --
> Vinicius
> --
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