From patchwork Tue Sep 14 23:07:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 12495085 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2D74C43219 for ; Tue, 14 Sep 2021 23:08:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8E24961165 for ; Tue, 14 Sep 2021 23:08:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236049AbhINXJP (ORCPT ); Tue, 14 Sep 2021 19:09:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:45202 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235927AbhINXJG (ORCPT ); Tue, 14 Sep 2021 19:09:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 2A8A060F46; Tue, 14 Sep 2021 23:07:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1631660868; bh=INAd9qnY+vUsPcQNVgf7NArEVEvN9H/VXUzI7HMHAGA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hxe1yXIZsUc9f5JnOP8EGY71VOZpt/YGTwFZiSDEH2X/PofP2nO4KpzNlRBqkI9pk 4u+xCts2GDOvqXR6vLdqSywv1UKtplXTn9yMiLs+NyR45TmgtsZz2LXJ0apxvSJYhI 6NBxpTnImsciKt/qcUMoapRHKyjOdwzMFJWQaPW6+B1/eA1mzn2WCUnbuoERL8KJ9Q fDtVlYOp05oLoTcMjo8CqJZfGHcQwALSOJs/Yw+3GronmK4BOcSzQ0dOgkKrpp7Mca zb1d8hfHXutJFil5qKQdh+6/AjhPTz2Z6tqtKte3I5od4ClyrqxLbPwSDgCtREchBG rcRuOrQPs7nnw== From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Aharon Landau , "David S. Miller" , Dennis Dalessandro , Gal Pressman , Jakub Kicinski , linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Maor Gottlieb , Mark Zhang , Mike Marciniszyn , Mustafa Ismail , Naresh Kumar PBS , Neta Ostrovsky , netdev@vger.kernel.org, Potnuri Bharat Teja , Saeed Mahameed , Selvin Xavier , Shiraz Saleem , Yishai Hadas , Zhu Yanjun Subject: [PATCH rdma-next v1 05/11] RDMA/counter: Add optional counter support Date: Wed, 15 Sep 2021 02:07:24 +0300 Message-Id: <04bd7354c6a375e684712d79915f7eb816efee92.1631660727.git.leonro@nvidia.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Aharon Landau An optional counter is a vendor-specific counter that may be dynamically enabled/disabled. This enhancement allows us to expose counters which are for example mutual exclusive and cannot be enabled at the same time, counters that might degrades performance, optional debug counters, etc. Optional counters are marked with IB_STAT_FLAG_OPTIONAL flag and not exported in sysfs. Signed-off-by: Aharon Landau Signed-off-by: Neta Ostrovsky Reviewed-by: Mark Zhang Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/counters.c | 22 ++++++++++++++++++++++ drivers/infiniband/core/device.c | 1 + drivers/infiniband/core/sysfs.c | 26 ++++++++++++++++---------- include/rdma/ib_verbs.h | 14 +++++++++++++- include/rdma/rdma_counter.h | 2 ++ 5 files changed, 54 insertions(+), 11 deletions(-) diff --git a/drivers/infiniband/core/counters.c b/drivers/infiniband/core/counters.c index a9559e33a113..974abc73a033 100644 --- a/drivers/infiniband/core/counters.c +++ b/drivers/infiniband/core/counters.c @@ -106,6 +106,28 @@ static int __rdma_counter_bind_qp(struct rdma_counter *counter, return ret; } +int rdma_counter_modify(struct ib_device *dev, u32 port, int index, bool enable) +{ + struct rdma_hw_stats *stats; + int ret; + + if (!dev->ops.modify_hw_stat) + return -EOPNOTSUPP; + + stats = ib_get_hw_stats_port(dev, port); + if (!stats) + return -EINVAL; + + mutex_lock(&stats->lock); + ret = dev->ops.modify_hw_stat(dev, port, index, enable); + if (!ret) + enable ? clear_bit(index, stats->is_disabled) : + set_bit(index, stats->is_disabled); + mutex_unlock(&stats->lock); + + return ret; +} + static struct rdma_counter *alloc_and_bind(struct ib_device *dev, u32 port, struct ib_qp *qp, enum rdma_nl_counter_mode mode) diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c index f4814bb7f082..22a4adda7981 100644 --- a/drivers/infiniband/core/device.c +++ b/drivers/infiniband/core/device.c @@ -2676,6 +2676,7 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops) SET_DEVICE_OP(dev_ops, modify_cq); SET_DEVICE_OP(dev_ops, modify_device); SET_DEVICE_OP(dev_ops, modify_flow_action_esp); + SET_DEVICE_OP(dev_ops, modify_hw_stat); SET_DEVICE_OP(dev_ops, modify_port); SET_DEVICE_OP(dev_ops, modify_qp); SET_DEVICE_OP(dev_ops, modify_srq); diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index a26bf960f7ef..c5fc86d8ed3e 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -938,7 +938,7 @@ int ib_setup_device_attrs(struct ib_device *ibdev) { struct hw_stats_device_attribute *attr; struct hw_stats_device_data *data; - int i, ret; + int i, ret, pos = 0; data = alloc_hw_stats_device(ibdev); if (IS_ERR(data)) { @@ -959,16 +959,19 @@ int ib_setup_device_attrs(struct ib_device *ibdev) data->stats->timestamp = jiffies; for (i = 0; i < data->stats->num_counters; i++) { - attr = &data->attrs[i]; + if (data->stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) + continue; + attr = &data->attrs[pos]; sysfs_attr_init(&attr->attr.attr); attr->attr.attr.name = data->stats->descs[i].name; attr->attr.attr.mode = 0444; attr->attr.show = hw_stat_device_show; attr->show = show_hw_stats; - data->group.attrs[i] = &attr->attr.attr; + data->group.attrs[pos] = &attr->attr.attr; + pos++; } - attr = &data->attrs[i]; + attr = &data->attrs[pos]; sysfs_attr_init(&attr->attr.attr); attr->attr.attr.name = "lifespan"; attr->attr.attr.mode = 0644; @@ -976,7 +979,7 @@ int ib_setup_device_attrs(struct ib_device *ibdev) attr->show = show_stats_lifespan; attr->attr.store = hw_stat_device_store; attr->store = set_stats_lifespan; - data->group.attrs[i] = &attr->attr.attr; + data->group.attrs[pos] = &attr->attr.attr; for (i = 0; i != ARRAY_SIZE(ibdev->groups); i++) if (!ibdev->groups[i]) { ibdev->groups[i] = &data->group; @@ -1032,7 +1035,7 @@ static int setup_hw_port_stats(struct ib_port *port, { struct hw_stats_port_attribute *attr; struct hw_stats_port_data *data; - int i, ret; + int i, ret, pos = 0; data = alloc_hw_stats_port(port, group); if (IS_ERR(data)) @@ -1050,16 +1053,19 @@ static int setup_hw_port_stats(struct ib_port *port, data->stats->timestamp = jiffies; for (i = 0; i < data->stats->num_counters; i++) { - attr = &data->attrs[i]; + if (data->stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) + continue; + attr = &data->attrs[pos]; sysfs_attr_init(&attr->attr.attr); attr->attr.attr.name = data->stats->descs[i].name; attr->attr.attr.mode = 0444; attr->attr.show = hw_stat_port_show; attr->show = show_hw_stats; - group->attrs[i] = &attr->attr.attr; + group->attrs[pos] = &attr->attr.attr; + pos++; } - attr = &data->attrs[i]; + attr = &data->attrs[pos]; sysfs_attr_init(&attr->attr.attr); attr->attr.attr.name = "lifespan"; attr->attr.attr.mode = 0644; @@ -1067,7 +1073,7 @@ static int setup_hw_port_stats(struct ib_port *port, attr->show = show_stats_lifespan; attr->attr.store = hw_stat_port_store; attr->store = set_stats_lifespan; - group->attrs[i] = &attr->attr.attr; + group->attrs[pos] = &attr->attr.attr; port->hw_stats_data = data; return 0; diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index f016bc0cd9de..e825e8e7accf 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -545,13 +545,18 @@ enum ib_port_speed { IB_SPEED_NDR = 128, }; +enum ib_stat_flag { + IB_STAT_FLAG_OPTIONAL = 1 << 0, +}; + /** * struct rdma_stat_desc * @name - The name of the counter - * + * @flags - Flags of the counter; For example, IB_STAT_FLAG_OPTIONAL */ struct rdma_stat_desc { const char *name; + unsigned int flags; }; /** @@ -2591,6 +2596,13 @@ struct ib_device_ops { int (*get_hw_stats)(struct ib_device *device, struct rdma_hw_stats *stats, u32 port, int index); + /** + * modify_hw_stat - Modify the counter configuration + * @enable: true/false when enable/disable a counter + * Return codes - 0 on success or error code otherwise. + */ + int (*modify_hw_stat)(struct ib_device *device, u32 port, + int counter_index, bool enable); /** * Allows rdma drivers to add their own restrack attributes. */ diff --git a/include/rdma/rdma_counter.h b/include/rdma/rdma_counter.h index 0295b22cd1cd..b21ea39efc6c 100644 --- a/include/rdma/rdma_counter.h +++ b/include/rdma/rdma_counter.h @@ -63,4 +63,6 @@ int rdma_counter_get_mode(struct ib_device *dev, u32 port, enum rdma_nl_counter_mode *mode, enum rdma_nl_counter_mask *mask); +int rdma_counter_modify(struct ib_device *dev, u32 port, int index, + bool is_add); #endif /* _RDMA_COUNTER_H_ */