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[104.188.17.28]) by smtp.gmail.com with ESMTPSA id u1sm7196808pfh.85.2019.05.31.16.27.48 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 31 May 2019 16:27:49 -0700 (PDT) Date: Fri, 31 May 2019 16:27:46 -0700 From: Bjorn Andersson To: Arnd Bergmann Subject: Re: [PATCH v2 00/17] net: introduce Qualcomm IPA driver Message-ID: <20190531232746.GA25597@minitux> References: <20190531035348.7194-1-elder@linaro.org> <065c95a8-7b17-495d-f225-36c46faccdd7@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.3 (2019-02-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190531_162751_430284_1FC29128 X-CRM114-Status: GOOD ( 13.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: DTML , syadagir@codeaurora.org, Eric Caruso , Dan Williams , Networking , linux-arm-msm@vger.kernel.org, Ilias Apalodimas , Linux Kernel Mailing List , evgreen@chromium.org, abhishek.esse@gmail.com, Linux ARM , Alex Elder , Subash Abhinov Kasiviswanathan , linux-soc@vger.kernel.org, David Miller , cpratapa@codeaurora.org, Ben Chan Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri 31 May 12:19 PDT 2019, Arnd Bergmann wrote: > On Fri, May 31, 2019 at 6:36 PM Alex Elder wrote: > > On 5/31/19 9:58 AM, Dan Williams wrote: > > > On Thu, 2019-05-30 at 22:53 -0500, Alex Elder wrote: [..] > > So basically, the purpose of the rmnet driver is to handle QMAP > > protocol connections, and right now that's what the modem provides. > > Do you have any idea why this particular design was picked? > >From what I've seen of QMAP it seems like a reasonable design choice to have a software component (rmnet) dealing with this, separate from the transport. And I think IPA is the 4th or 5th mechanism for transporting QMAP packets back and forth to the modem. Downstream rmnet is copyright 2007-, and I know of interest in bringing at least one of the other transports upstream. Regards, Bjorn _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel