From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 C095DC282CB for ; Wed, 6 Feb 2019 00:01:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 93C15217F9 for ; Wed, 6 Feb 2019 00:01:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726865AbfBFABQ (ORCPT ); Tue, 5 Feb 2019 19:01:16 -0500 Received: from mga09.intel.com ([134.134.136.24]:8500 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726624AbfBFABO (ORCPT ); Tue, 5 Feb 2019 19:01:14 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Feb 2019 16:01:13 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,337,1544515200"; d="scan'208";a="113999012" Received: from jtkirshe-desk1.jf.intel.com ([134.134.177.96]) by orsmga006.jf.intel.com with ESMTP; 05 Feb 2019 16:01:13 -0800 From: Jeff Kirsher To: linville@tuxdriver.com Cc: Nicholas Nunley , netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, Jeff Kirsher Subject: [PATCH v2 4/6] ethtool: support per-queue sub command --show-coalesce Date: Tue, 5 Feb 2019 16:01:04 -0800 Message-Id: <20190206000106.24364-4-jeffrey.t.kirsher@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190206000106.24364-1-jeffrey.t.kirsher@intel.com> References: <20190206000106.24364-1-jeffrey.t.kirsher@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Nicholas Nunley Get all masked queues' coalesce settings from kernel and dump them one by one. Example: $ sudo ./ethtool --set-perqueue-command eth5 queue_mask 0x11 --show-coalesce Queue: 0 Adaptive RX: off TX: off stats-block-usecs: 0 sample-interval: 0 pkt-rate-low: 0 pkt-rate-high: 0 rx-usecs: 222 rx-frames: 0 rx-usecs-irq: 0 rx-frames-irq: 256 tx-usecs: 222 tx-frames: 0 tx-usecs-irq: 0 tx-frames-irq: 256 rx-usecs-low: 0 rx-frame-low: 0 tx-usecs-low: 0 tx-frame-low: 0 rx-usecs-high: 0 rx-frame-high: 0 tx-usecs-high: 0 tx-frame-high: 0 Queue: 4 Adaptive RX: off TX: off stats-block-usecs: 0 sample-interval: 0 pkt-rate-low: 0 pkt-rate-high: 0 rx-usecs: 222 rx-frames: 0 rx-usecs-irq: 0 rx-frames-irq: 256 tx-usecs: 222 tx-frames: 0 tx-usecs-irq: 0 tx-frames-irq: 256 rx-usecs-low: 0 rx-frame-low: 0 tx-usecs-low: 0 tx-frame-low: 0 rx-usecs-high: 0 rx-frame-high: 0 tx-usecs-high: 0 tx-frame-high: 0 Based on patch by Kan Liang Signed-off-by: Nicholas Nunley Signed-off-by: Jeff Kirsher --- ethtool.8.in | 2 +- ethtool.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 63 insertions(+), 3 deletions(-) diff --git a/ethtool.8.in b/ethtool.8.in index 0aaca2c..71bb962 100644 --- a/ethtool.8.in +++ b/ethtool.8.in @@ -1153,7 +1153,7 @@ Sets the specific queues which the sub command is applied to. If queue_mask is not set, the sub command will be applied to all queues. .TP .B sub_command -Sets the sub command. +Sets the sub command. The supported sub commands include --show-coalesce. .RE .SH BUGS Not supported (in part or whole) on all network drivers. diff --git a/ethtool.c b/ethtool.c index 4dc725c..9a1b83b 100644 --- a/ethtool.c +++ b/ethtool.c @@ -1409,6 +1409,29 @@ static int dump_coalesce(const struct ethtool_coalesce *ecoal) return 0; } +void dump_per_queue_coalesce(struct ethtool_per_queue_op *per_queue_opt, + __u32 *queue_mask) +{ + char *addr; + int i; + + addr = (char *)per_queue_opt + sizeof(*per_queue_opt); + for (i = 0; i < __KERNEL_DIV_ROUND_UP(MAX_NUM_QUEUE, 32); i++) { + int queue = i * 32; + __u32 mask = queue_mask[i]; + + while (mask > 0) { + if (mask & 0x1) { + fprintf(stdout, "Queue: %d\n", queue); + dump_coalesce((struct ethtool_coalesce *)addr); + addr += sizeof(struct ethtool_coalesce); + } + mask = mask >> 1; + queue++; + } + } +} + struct feature_state { u32 off_flags; struct ethtool_gfeatures features; @@ -5245,7 +5268,8 @@ static const struct option { { "--show-fec", 1, do_gfec, "Show FEC settings"}, { "--set-fec", 1, do_sfec, "Set FEC settings", " [ encoding auto|off|rs|baser [...]]\n"}, - { "--set-perqueue-command", 1, do_perqueue, "Set per queue command", + { "--set-perqueue-command", 1, do_perqueue, "Set per queue command. " + "The supported sub commands include --show-coalesce", " [queue_mask %x] SUB_COMMAND\n"}, { "-h|--help", 0, show_usage, "Show this help" }, { "--version", 0, do_version, "Show version number" }, @@ -5350,8 +5374,32 @@ static int find_max_num_queues(struct cmd_context *ctx) echannels.combined_count); } +static struct ethtool_per_queue_op * +get_per_queue_coalesce(struct cmd_context *ctx, __u32 *queue_mask, int n_queues) +{ + struct ethtool_per_queue_op *per_queue_opt; + + per_queue_opt = malloc(sizeof(*per_queue_opt) + n_queues * + sizeof(struct ethtool_coalesce)); + if (!per_queue_opt) + return NULL; + + memcpy(per_queue_opt->queue_mask, queue_mask, + __KERNEL_DIV_ROUND_UP(MAX_NUM_QUEUE, 32) * sizeof(__u32)); + per_queue_opt->cmd = ETHTOOL_PERQUEUE; + per_queue_opt->sub_command = ETHTOOL_GCOALESCE; + if (send_ioctl(ctx, per_queue_opt)) { + free(per_queue_opt); + perror("Cannot get device per queue parameters"); + return NULL; + } + + return per_queue_opt; +} + static int do_perqueue(struct cmd_context *ctx) { + struct ethtool_per_queue_op *per_queue_opt; __u32 queue_mask[__KERNEL_DIV_ROUND_UP(MAX_NUM_QUEUE, 32)] = {0}; int i, n_queues = 0; @@ -5390,7 +5438,19 @@ static int do_perqueue(struct cmd_context *ctx) if (i < 0) exit_bad_args(); - /* no sub_command support yet */ + if (strstr(args[i].opts, "--show-coalesce") != NULL) { + per_queue_opt = get_per_queue_coalesce(ctx, queue_mask, + n_queues); + if (per_queue_opt == NULL) { + perror("Cannot get device per queue parameters"); + return -EFAULT; + } + dump_per_queue_coalesce(per_queue_opt, queue_mask); + free(per_queue_opt); + } else { + perror("The subcommand is not supported yet"); + return -EOPNOTSUPP; + } return 0; } -- 2.20.1