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[104.188.17.28]) by smtp.gmail.com with ESMTPSA id j20sm1819042pff.183.2019.05.30.18.17.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 30 May 2019 18:17:56 -0700 (PDT) From: Bjorn Andersson To: "David S. Miller" Cc: Arun Kumar Neelakantam , Chris Lew , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v2 0/5] QRTR flow control improvements Date: Thu, 30 May 2019 18:17:48 -0700 Message-Id: <20190531011753.11840-1-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.18.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In order to prevent overconsumption of resources on the remote side QRTR implements a flow control mechanism. Move the handling of the incoming confirm_rx to the receiving process to ensure incoming flow is controlled. Then implement outgoing flow control, using the recommended algorithm of counting outstanding non-confirmed messages and blocking when hitting a limit. The last three patches refactors the node assignment and port lookup, in order to remove the worker in the receive path. Bjorn Andersson (5): net: qrtr: Move resume-tx transmission to recvmsg net: qrtr: Implement outgoing flow control net: qrtr: Migrate node lookup tree to spinlock net: qrtr: Make qrtr_port_lookup() use RCU net: qrtr: Remove receive worker net/qrtr/qrtr.c | 308 +++++++++++++++++++++++++++++++++++++----------- 1 file changed, 239 insertions(+), 69 deletions(-) -- 2.18.0