From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 7FD3442D83 for ; Wed, 28 Jun 2023 16:12:07 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7A60A40151; Wed, 28 Jun 2023 16:12:07 +0200 (CEST) Received: from mail-lf1-f46.google.com (mail-lf1-f46.google.com [209.85.167.46]) by mails.dpdk.org (Postfix) with ESMTP id 4AC1B400EF for ; Wed, 28 Jun 2023 16:12:06 +0200 (CEST) Received: by mail-lf1-f46.google.com with SMTP id 2adb3069b0e04-4fb761efa7aso5224847e87.0 for ; Wed, 28 Jun 2023 07:12:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1687961526; x=1690553526; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=FdUPx42L2rFMq0BZQfdc2kUTayuhPLbgtjolWaZrDWs=; b=drzZKGmRRyjVdKrWULo/fvU3OfNFnxrAtYiaQTN/vzBfgFYPgJuXXGmCh+4e+5n3A9 o6F8yTbhDyDKsx15lOK4mTvWLn9rqGcxN5AeUlYUYJ/h8dI8cfKXPAWnLAyxT88Liwoo x3bKlFlEODuycnccTNnQwgdHkDeSPTdmL4FuFWzDHOa93WOJxI1uWRiwUGh6EE2mGPqY wZgspgtv5jm8nOEzlUSLb/mNKKKh+jpw5fW1jiEkEXhb4GMdo/ti3kPtC75hSuHf7My8 karjBk2uFXK2sgl648qvoKCTBXGhlftIHbyNnbI2tEjr+lOQi+GWnqpPzgiwRxEJJ14b LnKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687961526; x=1690553526; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=FdUPx42L2rFMq0BZQfdc2kUTayuhPLbgtjolWaZrDWs=; b=aklojyMJIvXUYQf5LyUBS42M5h9vnwRXMs3bBIsIW9Vf3ME6n7CKWD31Az+b+ndETx Kuy14J6IMZd4N/fwntQ29tRl78cVPf1LQUaiy5USTmTtkq/X60w4rHQ6ZzGjJcwRPiZL oK5u4kHdJcQLu5jNYxyT+rrTP6FgAa7ti12jwhIhBFljrkIkXn+bbt6gg9P5VnG/X94F MrF8Yqg8+lnAfpyW1Z3RPOasE9Xva/G865IWpn4Pcvuu4Y6gdVbItBr4vhk6y8Hf7Mcq V9WsnnPEK+1vFw0M/4q3yWBEfix+KihI5b1h3NPYmt5oJMWuf5a3Wf9ZN8FaBU4X0rhZ Ucew== X-Gm-Message-State: AC+VfDz+CJMZrirvmN1LbcZ1dTp6TUWKXn3rLy0sw3NMqQz0zeChvWsl v58UyEPTa0SaIcBJZWaHdSPNkHR3GewpwQ== X-Google-Smtp-Source: ACHHUZ4TSANQ1V3SbLYhPMfQZjIK+gj8EUYUTYixGTSxIAbWjGT1GZlF0Y7OR4rBsZ8qpE9Y2oFDrg== X-Received: by 2002:a19:6418:0:b0:4f9:571d:c50e with SMTP id y24-20020a196418000000b004f9571dc50emr13860311lfb.36.1687961525586; Wed, 28 Jun 2023 07:12:05 -0700 (PDT) Received: from localhost ([137.220.119.58]) by smtp.gmail.com with ESMTPSA id g14-20020a7bc4ce000000b003fbaf9abf2fsm2323142wmk.23.2023.06.28.07.12.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jun 2023 07:12:05 -0700 (PDT) From: luca.boccassi@gmail.com To: Viacheslav Ovsiienko Cc: dpdk stable Subject: patch 'net/mlx5: fix device removal event handling' has been queued to stable release 20.11.9 Date: Wed, 28 Jun 2023 15:10:45 +0100 Message-Id: <20230628141046.2145871-21-luca.boccassi@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230628141046.2145871-1-luca.boccassi@gmail.com> References: <20230615013258.1439718-63-luca.boccassi@gmail.com> <20230628141046.2145871-1-luca.boccassi@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Hi, FYI, your patch has been queued to stable release 20.11.9 Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet. It will be pushed if I get no objections before 06/30/23. So please shout if anyone has objections. Also note that after the patch there's a diff of the upstream commit vs the patch applied to the branch. This will indicate if there was any rebasing needed to apply to the stable branch. If there were code changes for rebasing (ie: not only metadata diffs), please double check that the rebase was correctly done. Queued patches are on a temporary branch at: https://github.com/bluca/dpdk-stable This queued commit can be viewed at: https://github.com/bluca/dpdk-stable/commit/92f3908f23339ab540c5a461a79f7d033bd2ce0f Thanks. Luca Boccassi --- >From 92f3908f23339ab540c5a461a79f7d033bd2ce0f Mon Sep 17 00:00:00 2001 From: Viacheslav Ovsiienko Date: Tue, 30 May 2023 18:13:28 +0300 Subject: [PATCH] net/mlx5: fix device removal event handling [ upstream commit 22dc56cfbd39692eb74fad93ff5ecc3df5fd0633 ] On the device removal kernel notifies user space application with queueing the IBV_DEVICE_FATAL_EVENT and triggering appropriate file descriptor. Mellanox kernel driver stack emits this event twice from different layers (mlx5 and uverbs). The IB port index is not applicable in the event structure and should be ignored for IBV_DEVICE_FATAL_EVENT events. Also, on the older kernels (at least from OFED 4.9) there might be race conditions causing the event queue close before application fetches the IBV_DEVICE_FATAL_EVENT message with ibv_get_async_event() API. To provide the reliable device removal event detection the patch: - ignores the IB port index for the IBV_DEVICE_FATAL_EVENT - introduces the flag to notify PMD about removal only once - acks event with ibv_ack_async_event after actual handling - checks for EIO error, making sure queue is not closed yet Fixes: 40d9f906f4e2 ("net/mlx5: fix device removal handler for multiport") Signed-off-by: Viacheslav Ovsiienko --- drivers/net/mlx5/linux/mlx5_ethdev_os.c | 40 +++++++++++++++++-------- drivers/net/mlx5/mlx5.h | 1 + 2 files changed, 28 insertions(+), 13 deletions(-) diff --git a/drivers/net/mlx5/linux/mlx5_ethdev_os.c b/drivers/net/mlx5/linux/mlx5_ethdev_os.c index 92320616b5..473dad3851 100644 --- a/drivers/net/mlx5/linux/mlx5_ethdev_os.c +++ b/drivers/net/mlx5/linux/mlx5_ethdev_os.c @@ -715,6 +715,7 @@ mlx5_dev_interrupt_device_fatal(struct mlx5_dev_ctx_shared *sh) for (i = 0; i < sh->max_port; ++i) { struct rte_eth_dev *dev; + struct mlx5_priv *priv; if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) { /* @@ -725,9 +726,14 @@ mlx5_dev_interrupt_device_fatal(struct mlx5_dev_ctx_shared *sh) } dev = &rte_eth_devices[sh->port[i].ih_port_id]; MLX5_ASSERT(dev); - if (dev->data->dev_conf.intr_conf.rmv) + priv = dev->data->dev_private; + MLX5_ASSERT(priv); + if (!priv->rmv_notified && dev->data->dev_conf.intr_conf.rmv) { + /* Notify driver about removal only once. */ + priv->rmv_notified = 1; rte_eth_dev_callback_process (dev, RTE_ETH_EVENT_INTR_RMV, NULL); + } } } @@ -800,21 +806,29 @@ mlx5_dev_interrupt_handler(void *cb_arg) struct rte_eth_dev *dev; uint32_t tmp; - if (mlx5_glue->get_async_event(sh->ctx, &event)) + if (mlx5_glue->get_async_event(sh->ctx, &event)) { + if (errno == EIO) { + DRV_LOG(DEBUG, + "IBV async event queue closed on: %s", + sh->ibdev_name); + mlx5_dev_interrupt_device_fatal(sh); + } break; + } + if (event.event_type == IBV_EVENT_DEVICE_FATAL) { + /* + * The DEVICE_FATAL event can be called by kernel + * twice - from mlx5 and uverbs layers, and port + * index is not applicable. We should notify all + * existing ports. + */ + mlx5_dev_interrupt_device_fatal(sh); + mlx5_glue->ack_async_event(&event); + continue; + } /* Retrieve and check IB port index. */ tmp = (uint32_t)event.element.port_num; - if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) { - /* - * The DEVICE_FATAL event is called once for - * entire device without port specifying. - * We should notify all existing ports. - */ - mlx5_glue->ack_async_event(&event); - mlx5_dev_interrupt_device_fatal(sh); - continue; - } - MLX5_ASSERT(tmp && (tmp <= sh->max_port)); + MLX5_ASSERT(tmp <= sh->max_port); if (!tmp) { /* Unsupported device level event. */ mlx5_glue->ack_async_event(&event); diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index 1f47c433eb..19cb02ad42 100644 --- a/drivers/net/mlx5/mlx5.h +++ b/drivers/net/mlx5/mlx5.h @@ -945,6 +945,7 @@ struct mlx5_priv { unsigned int mtr_reg_share:1; /* Whether support meter REG_C share. */ unsigned int sampler_en:1; /* Whether support sampler. */ unsigned int lb_used:1; /* Loopback queue is referred to. */ + unsigned int rmv_notified:1; /* Notified about removal event */ uint32_t mark_enabled:1; /* If mark action is enabled on rxqs. */ uint16_t domain_id; /* Switch domain identifier. */ uint16_t vport_id; /* Associated VF vport index (if any). */ -- 2.39.2 --- Diff of the applied patch vs upstream commit (please double-check if non-empty: --- --- - 2023-06-28 11:40:08.957115256 +0100 +++ 0021-net-mlx5-fix-device-removal-event-handling.patch 2023-06-28 11:40:08.088028165 +0100 @@ -1 +1 @@ -From 22dc56cfbd39692eb74fad93ff5ecc3df5fd0633 Mon Sep 17 00:00:00 2001 +From 92f3908f23339ab540c5a461a79f7d033bd2ce0f Mon Sep 17 00:00:00 2001 @@ -5,0 +6,2 @@ +[ upstream commit 22dc56cfbd39692eb74fad93ff5ecc3df5fd0633 ] + @@ -26 +27,0 @@ -Cc: stable@dpdk.org @@ -35 +36 @@ -index 55801534d1..639e629fe4 100644 +index 92320616b5..473dad3851 100644 @@ -38 +39 @@ -@@ -746,6 +746,7 @@ mlx5_dev_interrupt_device_fatal(struct mlx5_dev_ctx_shared *sh) +@@ -715,6 +715,7 @@ mlx5_dev_interrupt_device_fatal(struct mlx5_dev_ctx_shared *sh) @@ -46 +47 @@ -@@ -756,9 +757,14 @@ mlx5_dev_interrupt_device_fatal(struct mlx5_dev_ctx_shared *sh) +@@ -725,9 +726,14 @@ mlx5_dev_interrupt_device_fatal(struct mlx5_dev_ctx_shared *sh) @@ -62 +63 @@ -@@ -830,21 +836,29 @@ mlx5_dev_interrupt_handler(void *cb_arg) +@@ -800,21 +806,29 @@ mlx5_dev_interrupt_handler(void *cb_arg) @@ -66,2 +67,2 @@ -- if (mlx5_glue->get_async_event(sh->cdev->ctx, &event)) -+ if (mlx5_glue->get_async_event(sh->cdev->ctx, &event)) { +- if (mlx5_glue->get_async_event(sh->ctx, &event)) ++ if (mlx5_glue->get_async_event(sh->ctx, &event)) { @@ -105 +106 @@ -index fffd3c79f1..10a2f33ea0 100644 +index 1f47c433eb..19cb02ad42 100644 @@ -108,2 +109 @@ -@@ -1744,6 +1744,7 @@ struct mlx5_priv { - unsigned int mtr_en:1; /* Whether support meter. */ +@@ -945,6 +945,7 @@ struct mlx5_priv { @@ -110,0 +111 @@ + unsigned int sampler_en:1; /* Whether support sampler. */ @@ -114,2 +115,2 @@ - uint32_t num_lag_ports:4; /* Number of ports can be bonded. */ - uint32_t tunnel_enabled:1; /* If tunnel offloading is enabled on rxqs. */ + uint16_t domain_id; /* Switch domain identifier. */ + uint16_t vport_id; /* Associated VF vport index (if any). */