From patchwork Wed Sep 30 12:33:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kalesh A P X-Patchwork-Id: 79332 Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id DAF7DA04B5; Wed, 30 Sep 2020 14:18:41 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B66FC1D669; Wed, 30 Sep 2020 14:18:40 +0200 (CEST) Received: from relay.smtp-ext.broadcom.com (saphodev.broadcom.com [192.19.232.172]) by dpdk.org (Postfix) with ESMTP id 21D811D668 for ; Wed, 30 Sep 2020 14:18:39 +0200 (CEST) Received: from dhcp-10-123-153-22.dhcp.broadcom.net (bgccx-dev-host-lnx2.bec.broadcom.net [10.123.153.22]) by relay.smtp-ext.broadcom.com (Postfix) with ESMTP id 2239F3CE51 for ; Wed, 30 Sep 2020 05:18:36 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 relay.smtp-ext.broadcom.com 2239F3CE51 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=broadcom.com; s=dkimrelay; t=1601468317; bh=cU88/Ea2281ffhcwVDBEz5zyBd0zmTI5x3HS6sqWKw8=; h=From:To:Subject:Date:In-Reply-To:References:From; b=EcR0NNiBF+0Fk54KzOhZSAwUpXIR5G/iCGiNhCezFiuVxj0STtdFZtUri+y+cTJ6f 4QTlbf070xa1ruCJzPdMfBYXnWSK1CedGMz9NtjDyI9yzVibdzpX3g3+UxXwanIlke MayDJ4MIp+nrmra+yXLmcP42ABWDEeqomP2tggBk= From: Kalesh A P To: dev@dpdk.org Date: Wed, 30 Sep 2020 18:03:11 +0530 Message-Id: <20200930123314.27669-1-kalesh-anakkur.purayil@broadcom.com> X-Mailer: git-send-email 2.10.1 In-Reply-To: <20200122101654.20824-1-kalesh-anakkur.purayil@broadcom.com> References: <20200122101654.20824-1-kalesh-anakkur.purayil@broadcom.com> Subject: [dpdk-dev] [RFC PATCH v4 0/3] librte_ethdev: error recovery support X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" From: Kalesh AP The error recovery solution is a protocol implemented between firmware and bnxt PMD to recover from the fatal errors without a system reboot. There is an alarm thread which constantly monitors the health of the firmware and initiates a recovery when needed. There are two scenarios here: 1. Hardware or firmware encountered an error which firmware detected. Firmware is in operational status here. In this case, firmware can reset the chip and notify the driver about the reset. 2. Hardware or firmware encountered an error but firmware is dead/hung. Firmware is not in operational status. In this case, the only possible way to recover the adapter is through host driver(bnxt PMD). In both cases, bnxt PMD reinitializes with the FW again after the reset. During that recovery process, data path will be halted and any control path operation would fail. So, the PMD has to notify the application about this reset/error event to prevent any activities from the application while the PMD is recovering from the error. This patch set adds support for the reset and recovery event in the rte_eth_event framework. FW error and FW reset conditions would be managed by the PMD. Driver uses RTE_ETH_EVENT_RESET event to notify the applications about the FW reset or error. In such cases, PMD use the RTE_ETH_EVENT_RECOVERED event to notify application about PMD has recovered from FW reset or FW error. v4: Added doxygen comments about new events. V3: Fixed a typo in commit log. V2: Added a new event RTE_ETH_EVENT_RESET instead of using the RTE_ETH_EVENT_INTR_RESET to notify applications about device reset. Kalesh AP (3): ethdev: support device reset and recovery events net/bnxt: notify applications about device reset/recovery app/testpmd: handle device recovery event app/test-pmd/testpmd.c | 6 +++++- drivers/net/bnxt/bnxt_cpr.c | 3 +++ drivers/net/bnxt/bnxt_ethdev.c | 9 +++++++++ lib/librte_ethdev/rte_ethdev.h | 17 +++++++++++++++++ 4 files changed, 34 insertions(+), 1 deletion(-)