From patchwork Thu Sep 30 08:02:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 12527675 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8650CC433FE for ; Thu, 30 Sep 2021 08:04:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 71576610A4 for ; Thu, 30 Sep 2021 08:04:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349082AbhI3IG0 (ORCPT ); Thu, 30 Sep 2021 04:06:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:32884 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348976AbhI3IFl (ORCPT ); Thu, 30 Sep 2021 04:05:41 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 09150617E5; Thu, 30 Sep 2021 08:03:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1632988998; bh=t/AsPHEMF54UA1pivQhB1Pn10/GqZeXwfh1mJ1DtMMs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hoGnF6Xthlv02jt+j3j4T0gWAQ62ebzAQ6buxHIMFNFUhByjt3HtD8Fm67axLj/gU MBaURha78AiHSvRNYzzakN4r7ZdA2mWAs7p6UtLmjlcdH2tGWB4oxMZjxOq/OQyAx2 xusVTONVKDnOzx3fUdNiVWbbQdKStHmLDUPDnTn66lZLOstMCeDa7w12ZNeOu31yaU Y+NpDnWAvhsYYnKdW4DD9lWSvYZ7QQHK5eMJIPXmyiCgiJI2fY7UfrHrkFjKIHGWaN DSweJXcUqZqj5XtgU/0qBv3NIf02KLos2soUvPy0KU8CoES2FIE61BqhllePMnUskD Ka0rr0foVX/4Q== 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 v2 13/13] RDMA/nldev: Add support to get status of all counters Date: Thu, 30 Sep 2021 11:02:29 +0300 Message-Id: X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Aharon Landau This patch adds the ability to get the name, index and status of all counters for each link through RDMA netlink. This can be used for user-space to get the current optional-counter mode. Examples: $ rdma statistic mode link rocep8s0f0/1 optional-counters cc_rx_ce_pkts $ rdma statistic mode supported link rocep8s0f0/1 supported optional-counters cc_rx_ce_pkts,cc_rx_cnp_pkts,cc_tx_cnp_pkts link rocep8s0f1/1 supported optional-counters cc_rx_ce_pkts,cc_rx_cnp_pkts,cc_tx_cnp_pkts Signed-off-by: Aharon Landau Signed-off-by: Neta Ostrovsky Reviewed-by: Mark Zhang Signed-off-by: Leon Romanovsky --- drivers/infiniband/core/nldev.c | 152 ++++++++++++++++++++++++-------- 1 file changed, 116 insertions(+), 36 deletions(-) diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c index 2cf3e85470c4..adbddb07b08e 100644 --- a/drivers/infiniband/core/nldev.c +++ b/drivers/infiniband/core/nldev.c @@ -2109,49 +2109,90 @@ static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh, return ret; } -static int stat_get_doit_default_counter(struct sk_buff *skb, - struct nlmsghdr *nlh, - struct netlink_ext_ack *extack, - struct nlattr *tb[]) +static int stat_get_doit_stats_list(struct sk_buff *skb, + struct nlmsghdr *nlh, + struct netlink_ext_ack *extack, + struct nlattr *tb[], + struct ib_device *device, u32 port, + struct rdma_hw_stats *stats) { - struct rdma_hw_stats *stats; - struct nlattr *table_attr; - struct ib_device *device; - int ret, num_cnts, i; + struct nlattr *table, *entry; struct sk_buff *msg; - u32 index, port; - u64 v; + int i; - if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) - return -EINVAL; + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!msg) + return -ENOMEM; - index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); - device = ib_device_get_by_index(sock_net(skb->sk), index); - if (!device) - return -EINVAL; + nlh = nlmsg_put( + msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, + RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_STAT_GET), 0, 0); - if (!device->ops.alloc_hw_port_stats || !device->ops.get_hw_stats) { - ret = -EINVAL; - goto err; - } + if (fill_nldev_handle(msg, device) || + nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) + goto err_msg; - port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); - stats = ib_get_hw_stats_port(device, port); - if (!stats) { - ret = -EINVAL; - goto err; + table = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS); + if (!table) + goto err_msg; + + mutex_lock(&stats->lock); + for (i = 0; i < stats->num_counters; i++) { + entry = nla_nest_start(msg, + RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY); + if (!entry) + goto err_msg_table; + + if (nla_put_string(msg, + RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME, + stats->descs[i].name) || + nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX, i)) + goto err_msg_entry; + + if ((stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) && + (nla_put_u8(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC, + !test_bit(i, stats->is_disabled)))) + goto err_msg_entry; + + nla_nest_end(msg, entry); } + mutex_unlock(&stats->lock); + + nla_nest_end(msg, table); + nlmsg_end(msg, nlh); + return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); + +err_msg_entry: + nla_nest_cancel(msg, entry); +err_msg_table: + mutex_unlock(&stats->lock); + nla_nest_cancel(msg, table); +err_msg: + nlmsg_free(msg); + return -EMSGSIZE; +} + +static int stat_get_doit_stats_values(struct sk_buff *skb, struct nlmsghdr *nlh, + struct netlink_ext_ack *extack, + struct nlattr *tb[], + struct ib_device *device, u32 port, + struct rdma_hw_stats *stats) +{ + struct nlattr *table_attr; + int ret, num_cnts, i; + struct sk_buff *msg; + u64 v; + + if (!device->ops.alloc_hw_port_stats || !device->ops.get_hw_stats) + return -EINVAL; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) { - ret = -ENOMEM; - goto err; - } + if (!msg) + return -ENOMEM; - nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, - RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, - RDMA_NLDEV_CMD_STAT_GET), - 0, 0); + nlh = nlmsg_put( + msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, + RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_STAT_GET), 0, 0); if (fill_nldev_handle(msg, device) || nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) { @@ -2161,7 +2202,8 @@ static int stat_get_doit_default_counter(struct sk_buff *skb, mutex_lock(&stats->lock); - num_cnts = device->ops.get_hw_stats(device, stats, port, 0); + num_cnts = device->ops.get_hw_stats(device, stats, port, + stats->num_counters); if (num_cnts < 0) { ret = -EINVAL; goto err_stats; @@ -2188,7 +2230,6 @@ static int stat_get_doit_default_counter(struct sk_buff *skb, mutex_unlock(&stats->lock); nlmsg_end(msg, nlh); - ib_device_put(device); return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); err_table: @@ -2197,7 +2238,46 @@ static int stat_get_doit_default_counter(struct sk_buff *skb, mutex_unlock(&stats->lock); err_msg: nlmsg_free(msg); -err: + return ret; +} + +static int stat_get_doit_default_counter(struct sk_buff *skb, + struct nlmsghdr *nlh, + struct netlink_ext_ack *extack, + struct nlattr *tb[]) +{ + struct rdma_hw_stats *stats; + struct ib_device *device; + u32 index, port; + int ret; + + if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) + return -EINVAL; + + index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); + device = ib_device_get_by_index(sock_net(skb->sk), index); + if (!device) + return -EINVAL; + + port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); + if (!rdma_is_port_valid(device, port)) { + ret = -EINVAL; + goto end; + } + + stats = ib_get_hw_stats_port(device, port); + if (!stats) { + ret = -EINVAL; + goto end; + } + + if (tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC]) + ret = stat_get_doit_stats_list(skb, nlh, extack, tb, + device, port, stats); + else + ret = stat_get_doit_stats_values(skb, nlh, extack, tb, device, + port, stats); +end: ib_device_put(device); return ret; }