From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gaetan Rivet Subject: [PATCH v4 00/12] introduce fail-safe PMD Date: Mon, 29 May 2017 15:42:12 +0200 Message-ID: References: Cc: Gaetan Rivet To: dev@dpdk.org Return-path: Received: from mail-wm0-f53.google.com (mail-wm0-f53.google.com [74.125.82.53]) by dpdk.org (Postfix) with ESMTP id E22B17D02 for ; Mon, 29 May 2017 15:42:46 +0200 (CEST) Received: by mail-wm0-f53.google.com with SMTP id m7so19882805wmg.0 for ; Mon, 29 May 2017 06:42:46 -0700 (PDT) In-Reply-To: List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This PMD intercepts and manages Ethernet device removal events issued by slave PMDs and re-initializes them transparently when brought back so that existing applications do not need to be modified to benefit from true hot-plugging support. The stacked PMD approach shares many similarities with the bonding PMD but with a different purpose. While bonding provides the ability to group several links into a single logical device for enhanced throughput and supports fail-over at link level, this one manages the sudden disappearance of the underlying device; it guarantees applications face a valid device in working order at all times. Each fail-safe instance is configured to run atop one or several devices, with one defined as the preferred device. Hot-plug events are handled on all of them, and Tx is always directed to the preferred device if present or to the next available failover device (Rx is always performed on all devices for simplicity). Moreover, the configured slaves (preferred or failover) do not need to be present at initialization time and may appear later. Slaves configuration is continuously synchronized with that of the virtual device, which exposes their common set of capabilities to the application. Failure to apply the current configuration state to a slave for any reason simply reschedules its initialization. This patchset depends on: eal: complete attach / detach support http://dpdk.org/ml/archives/dev/2017-May/066366.html http://dpdk.org/dev/patchwork/patch/24522/ ethdev: add flow API rule copy function http://dpdk.org/ml/archives/dev/2017-May/066145.html http://dpdk.org/dev/patchwork/patch/24406/ ethdev: add isolated mode to flow API http://dpdk.org/ml/archives/dev/2017-April/064327.html http://dpdk.org/dev/patchwork/patch/23741/ v1 --> v2: - Wrote documentation - Fixed commit logs, signed-off-by - Added LSC event support - A few minor fixes v2 --> v3: - Numerous bug fixes. - Complete sub-EAL rework to follow new bus API. - burst protection on sub removal. - more flexible sub definition. - flow isolated mode support. v3 --> v4: - Split back commits net/failsafe: add fast burst functions net/failsafe: support device removal That were squashed by error during a rebase - Fix segfault on port plugin - Fix isolate mode support for MLX4 ports plugin Gaetan Rivet (12): ethdev: save VLAN filter setting ethdev: add deferred intermediate device state ethdev: count devices consistently net/failsafe: add fail-safe PMD net/failsafe: add plug-in support net/failsafe: add flexible device definition net/failsafe: support flow API net/failsafe: support offload capabilities net/failsafe: add fast burst functions net/failsafe: support device removal net/failsafe: support link status change event net/failsafe: support flow API isolation mode MAINTAINERS | 5 + config/common_base | 6 + doc/guides/nics/fail_safe.rst | 186 +++++++ doc/guides/nics/features/failsafe.ini | 32 ++ doc/guides/nics/index.rst | 1 + drivers/net/Makefile | 2 + drivers/net/failsafe/Makefile | 74 +++ drivers/net/failsafe/failsafe.c | 305 +++++++++++ drivers/net/failsafe/failsafe_args.c | 475 +++++++++++++++++ drivers/net/failsafe/failsafe_eal.c | 140 +++++ drivers/net/failsafe/failsafe_ether.c | 431 ++++++++++++++++ drivers/net/failsafe/failsafe_flow.c | 245 +++++++++ drivers/net/failsafe/failsafe_ops.c | 869 ++++++++++++++++++++++++++++++++ drivers/net/failsafe/failsafe_private.h | 377 ++++++++++++++ drivers/net/failsafe/failsafe_rxtx.c | 204 ++++++++ lib/librte_ether/rte_ethdev.c | 38 +- lib/librte_ether/rte_ethdev.h | 24 +- mk/rte.app.mk | 1 + 18 files changed, 3399 insertions(+), 16 deletions(-) create mode 100644 doc/guides/nics/fail_safe.rst create mode 100644 doc/guides/nics/features/failsafe.ini create mode 100644 drivers/net/failsafe/Makefile create mode 100644 drivers/net/failsafe/failsafe.c create mode 100644 drivers/net/failsafe/failsafe_args.c create mode 100644 drivers/net/failsafe/failsafe_eal.c create mode 100644 drivers/net/failsafe/failsafe_ether.c create mode 100644 drivers/net/failsafe/failsafe_flow.c create mode 100644 drivers/net/failsafe/failsafe_ops.c create mode 100644 drivers/net/failsafe/failsafe_private.h create mode 100644 drivers/net/failsafe/failsafe_rxtx.c -- 2.1.4