From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-188.mta0.migadu.com (out-188.mta0.migadu.com [91.218.175.188]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5FA3F7080D for ; Mon, 15 Jun 2026 00:53:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.188 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781484812; cv=none; b=cb5dTZNtIlP886Bjn2VSfOe7A+Upi4M8AVDd9Hh7Ji+OY1U6cIZUSeRM3/6YZDXrLgPEgSvaRYAExCiMy7gL6MaKi3KwTU8G+hRHYHr3B4m3pryRspCKz7CVCQwRcWpnA4qSl7948HnTTSX135x6sjMhQSkmLEi8rHmqhf0IZOs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781484812; c=relaxed/simple; bh=r+mwMuUqgLXvrizPZU3Vde8otUicXL2hjubspvzLv5M=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=HHb2Yt+xXZras6/Y8yX1CcgOHayP0qULM/KG85HsW0zoF1+18sLzGCnfuif8GX9WVXMtJa2f/UQXe/dziu8vVfRNMq73tpaMwr1ncvvTYzVizkWhxvrVad0+LKjREpiQRb5pQmxN0JoCWfne2JclAU6vyOzoTSTXfSJnphY7/JI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=cWU6WxFr; arc=none smtp.client-ip=91.218.175.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="cWU6WxFr" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1781484808; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=KFGGgGvx+Xz4hzLLgdlnm604TPHKvdtjxWVXaJtUp1Y=; b=cWU6WxFrCQmG72kAxiFGwPk88lKrTbgx8kscwWBvu8zkrSoqYsSFivfMzolmnxF5mue+oj ZsQYvDXljedwmLYyTMgv4xmWOshIFuLAq+VNWDRRf9+x5Axm9ARJ5ljBd3NOjx386Kjzbc DEE155ZIqix7qDnu8OVzElJ8Uj3AVss= From: Tao Cui To: dsahern@kernel.org, leonro@nvidia.com Cc: linux-rdma@vger.kernel.org, netdev@vger.kernel.org, Tao Cui Subject: [PATCH iproute2-next v3] rdma: display resource limits in curr/max format Date: Mon, 15 Jun 2026 08:53:15 +0800 Message-ID: <20260615005315.169582-1-cui.tao@linux.dev> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT From: Tao Cui Parse the new RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_MAX netlink attribute to show resource limits alongside current counts in curr/max format: Before: 0: mlx5_0: qp 123 cq 45 mr 200 pd 10 After: 0: mlx5_0: qp 123/131072 cq 45/65536 mr 200/1000000 pd 10/32768 JSON output provides both current and max fields per resource type (e.g. "qp": 123, "qp-max": 131072). Backward compatible: no output change when kernel lacks the new attribute. Signed-off-by: Tao Cui --- rdma/include/uapi/rdma/rdma_netlink.h | 5 +++++ rdma/res.c | 21 ++++++++++++++++++++- rdma/utils.c | 1 + 3 files changed, 26 insertions(+), 1 deletion(-) diff --git a/rdma/include/uapi/rdma/rdma_netlink.h b/rdma/include/uapi/rdma/rdma_netlink.h index 4356ec4a..e5b8b065 100644 --- a/rdma/include/uapi/rdma/rdma_netlink.h +++ b/rdma/include/uapi/rdma/rdma_netlink.h @@ -604,6 +604,11 @@ enum rdma_nldev_attr { RDMA_NLDEV_ATTR_FRMR_POOL_PINNED_HANDLES, /* u32 */ RDMA_NLDEV_ATTR_FRMR_POOL_KEY_KERNEL_VENDOR_KEY, /* u64 */ + /* + * Resource summary entry maximum value. + */ + RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_MAX, /* u64 */ + /* * Always the end */ diff --git a/rdma/res.c b/rdma/res.c index 062f0007..046935e2 100644 --- a/rdma/res.c +++ b/rdma/res.c @@ -55,7 +55,26 @@ static int res_print_summary(struct nlattr **tb) name = mnl_attr_get_str(nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME]); curr = mnl_attr_get_u64(nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]); - res_print_u64(name, curr, nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]); + if (nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_MAX]) { + uint64_t max; + char max_name[64]; + + max = mnl_attr_get_u64( + nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_MAX]); + snprintf(max_name, sizeof(max_name), "%s-max", name); + print_u64(PRINT_JSON, name, NULL, curr); + print_u64(PRINT_JSON, max_name, NULL, max); + if (!is_json_context()) { + char buf[64]; + + snprintf(buf, sizeof(buf), "%s %" PRIu64 "/%" PRIu64 " ", + name, curr, max); + pr_out("%s", buf); + } + } else { + res_print_u64(name, curr, + nla_line[RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]); + } } return 0; } diff --git a/rdma/utils.c b/rdma/utils.c index 87003b2c..90ea1c55 100644 --- a/rdma/utils.c +++ b/rdma/utils.c @@ -480,6 +480,7 @@ static const enum mnl_attr_data_type nldev_policy[RDMA_NLDEV_ATTR_MAX] = { [RDMA_NLDEV_ATTR_EVENT_TYPE] = MNL_TYPE_U8, [RDMA_NLDEV_SYS_ATTR_MONITOR_MODE] = MNL_TYPE_U8, [RDMA_NLDEV_ATTR_STAT_OPCOUNTER_ENABLED] = MNL_TYPE_U8, + [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_MAX] = MNL_TYPE_U64, }; static int rd_attr_check(const struct nlattr *attr, int *typep) -- 2.43.0