Return-Path: MIME-Version: 1.0 In-Reply-To: References: <20170914234748.79584-1-yunhanw@google.com> <20170914234748.79584-3-yunhanw@google.com> From: Luiz Augusto von Dentz Date: Fri, 15 Sep 2017 09:21:36 +0300 Message-ID: Subject: Re: [PATCH BlueZ 1/3] doc/gatt-api: Add UpdateMTU and MTU To: Yunhan Wang Cc: "linux-bluetooth@vger.kernel.org" Content-Type: text/plain; charset="UTF-8" Sender: linux-bluetooth-owner@vger.kernel.org List-ID: Hi Yunhan, On Fri, Sep 15, 2017 at 2:52 AM, Yunhan Wang wrote: > Hi, Luiz > > In order to implement packet fragmentation/assembly in upper layer > application, may we get ATT MTU extraction API in peripheral/server > side? Basic idea is to get ATT mtu after MTU exchange complete and > write comes in. This patch is the draft implementation. Im implementing AcquireWrite and AcquireNotify for server as well, that should address GATT services that want to emulate serial port or other protocol on top of it, like mesh. > Thanks > Best wishes > Yunhan > > On Thu, Sep 14, 2017 at 4:47 PM, Yunhan Wang wrote: >> Add updateMTU in gatt method to get att mtu value in server side. >> Add MTU property in gatt property. >> --- >> doc/gatt-api.txt | 11 +++++++++++ >> 1 file changed, 11 insertions(+) >> >> diff --git a/doc/gatt-api.txt b/doc/gatt-api.txt >> index cdd15f301..419308a7e 100644 >> --- a/doc/gatt-api.txt >> +++ b/doc/gatt-api.txt >> @@ -169,6 +169,13 @@ Methods array{byte} ReadValue(dict options) >> >> Possible Errors: org.bluez.Error.Failed >> >> + void UpdateMTU() [optional] (Server only) >> + >> + This method doesn't expect a reply so it is just >> + MTU value update in user space at server side. >> + >> + Possible Errors: org.bluez.Error.Failed >> + >> Properties string UUID [read-only] >> >> 128-bit characteristic UUID. >> @@ -225,6 +232,10 @@ Properties string UUID [read-only] >> "secure-read" (Server only) >> "secure-write" (Server only) >> >> + uint16_t MTU [read-only, optional] >> + >> + ATT MTU value >> + >> Characteristic Descriptors hierarchy >> ==================================== >> >> -- >> 2.14.1.690.gbb1197296e-goog >> -- Luiz Augusto von Dentz