From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756819AbdERRr2 (ORCPT ); Thu, 18 May 2017 13:47:28 -0400 Received: from a2nlsmtp01-04.prod.iad2.secureserver.net ([198.71.225.38]:37490 "EHLO a2nlsmtp01-04.prod.iad2.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756766AbdERRrL (ORCPT ); Thu, 18 May 2017 13:47:11 -0400 x-originating-ip: 107.180.71.197 From: kys@exchange.microsoft.com To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com, vkuznets@redhat.com, jasowang@redhat.com, leann.ogasawara@canonical.com, marcelo.cerri@canonical.com, sthemmin@microsoft.com Cc: "K. Y. Srinivasan" Subject: [PATCH 4/6] drivers: hv: vmbus: Increase the time between retries in vmbus_post_msg() Date: Thu, 18 May 2017 10:46:05 -0700 Message-Id: <1495129567-13744-4-git-send-email-kys@exchange.microsoft.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1495129534-13628-1-git-send-email-kys@exchange.microsoft.com> References: <1495129534-13628-1-git-send-email-kys@exchange.microsoft.com> Reply-To: kys@microsoft.com X-CMAE-Envelope: MS4wfFdJSWfZ37IHbcIH/joH/4fGUz/IWZ4Th/U6B7hEnuwD1MEXnGofGOh1Q4OL9Hp9I26zNf7MroaLIaLd0/3sc26x73CACqMGpSFRHnBQ2R0yZrV8kuHa 1t3Q7BUzNOFCWydTASiLGsiEM4TlCzYslVykd3z+4JPfIpjKtgI9ESe0aSbn5XcEo490JJZT0eh30FX/2ZHHU+P1RFqCSN5Uj1AilxUbLGifLrdvmmg5xFHS LNPdPlj6C4oz6vTYEaXeUi4fy1chbJ0CQsulNftjg968pa6jE+NhGEdHj+f8ztXoDsXo7rE39Pmi1rDujWKLX+MCAHNhTZPuzfF1wjG9uyNlEF81yJbX1KR7 ih9aWV6yQ8md3yEkHQIg0ZGqU0/Mcs/jTyZ8j3hD96BXzRX5F1DANbCp+9D04mjV5wHr2YXSjLVE+T+2tY0p4Pli6qIztwl7z79tVtmy9NbKRXz6ZpiXYSsa 9H4JY5N04lD5VjqWkzou3mAD4rtgoyxYpyBmVsrBCNE7+PjqhS8I0pZmGiEXeVCT5I4LJjx3yKtYWtTo Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: K. Y. Srinivasan Commit c0bb03924f1a ("Drivers: hv: vmbus: Raise retry/wait limits in vmbus_post_msg()") increased the retry/wait limits of vmbus_post_msg() to address the new DoS protection policies in WS2016. Increase the time between retries to make the code more robust. Signed-off-by: K. Y. Srinivasan --- drivers/hv/connection.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index c2d74ee..59c11ff 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -390,7 +390,7 @@ int vmbus_post_msg(void *buffer, size_t buflen, bool can_sleep) else mdelay(usec / 1000); - if (usec < 256000) + if (retries < 22) usec *= 2; } return ret; -- 1.7.1