From patchwork Wed Sep 30 07:07:25 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: 79294 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 6F4CEA04B1; Wed, 30 Sep 2020 08:52:58 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B26711BEB7; Wed, 30 Sep 2020 08:52:54 +0200 (CEST) Received: from relay.smtp-ext.broadcom.com (unknown [192.19.221.30]) by dpdk.org (Postfix) with ESMTP id ADA981BC0C for ; Wed, 30 Sep 2020 08:52:51 +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 0ABD717B02A; Tue, 29 Sep 2020 23:52:50 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 relay.smtp-ext.broadcom.com 0ABD717B02A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=broadcom.com; s=dkimrelay; t=1601448770; bh=kTn64/5UtHqrDRW0QLJoKb7gW72ixO87u5jcBAIswhg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jN2UHvZOvdCVFxa57RroND4mbipuG1aMek/WRCemUwCwHQY07uyk83NMQIXZro/Zr AOoTLsKwvETqx7ckNO9aZS2ZKk3Flhowr8+r/10O0zGqKPerY+0FpQSo1C2QeVDflJ ok5c1qxprFOztad4e6pu7JVlOoo26CzpZnE/kQfk= From: Kalesh A P To: dev@dpdk.org Cc: thomas@monjalon.net, ferruh.yigit@intel.com, ajit.khaparde@broadcom.com Date: Wed, 30 Sep 2020 12:37:25 +0530 Message-Id: <20200930070728.21114-1-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 v2 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. 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 | 2 ++ 4 files changed, 19 insertions(+), 1 deletion(-)