Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/1.0/patches/2219500/?format=api
{ "id": 2219500, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2219500/?format=api", "project": { "id": 46, "url": "http://patchwork.ozlabs.org/api/1.0/projects/46/?format=api", "name": "Intel Wired Ethernet development", "link_name": "intel-wired-lan", "list_id": "intel-wired-lan.osuosl.org", "list_email": "intel-wired-lan@osuosl.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260403054029.3789616-11-aleksandr.loktionov@intel.com>", "date": "2026-04-03T05:40:28", "name": "[iwl-net,10/10] ice: allow setting min_tx_rate to 0 to resolve VF bandwidth oversubscription", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c376efaf022e03e5d984f973501002347db9b8a7", "submitter": { "id": 75597, "url": "http://patchwork.ozlabs.org/api/1.0/people/75597/?format=api", "name": "Loktionov, Aleksandr", "email": "aleksandr.loktionov@intel.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/intel-wired-lan/patch/20260403054029.3789616-11-aleksandr.loktionov@intel.com/mbox/", "series": [ { "id": 498590, "url": "http://patchwork.ozlabs.org/api/1.0/series/498590/?format=api", "date": "2026-04-03T05:40:19", "name": "ice: bug fixes -- no link, tc-flower, VF rate", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498590/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2219500/checks/", "tags": {}, "headers": { "Return-Path": "<intel-wired-lan-bounces@osuosl.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Delivered-To": [ "patchwork-incoming@legolas.ozlabs.org", "intel-wired-lan@lists.osuosl.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=QxUZc9aL;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=140.211.166.137; helo=smtp4.osuosl.org;\n envelope-from=intel-wired-lan-bounces@osuosl.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fn6ys19n4z1yD3\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 03 Apr 2026 16:41:09 +1100 (AEDT)", "from localhost (localhost [127.0.0.1])\n\tby smtp4.osuosl.org (Postfix) with ESMTP id B0ABA40F33;\n\tFri, 3 Apr 2026 05:40:50 +0000 (UTC)", "from smtp4.osuosl.org ([127.0.0.1])\n by localhost (smtp4.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP\n id E5qG_s-Dto28; Fri, 3 Apr 2026 05:40:50 +0000 (UTC)", "from lists1.osuosl.org (lists1.osuosl.org [140.211.166.142])\n\tby smtp4.osuosl.org (Postfix) with ESMTP id E2FC040E83;\n\tFri, 3 Apr 2026 05:40:49 +0000 (UTC)", "from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133])\n by lists1.osuosl.org (Postfix) with ESMTP id 463791F3\n for <intel-wired-lan@lists.osuosl.org>; Fri, 3 Apr 2026 05:40:46 +0000 (UTC)", "from localhost (localhost [127.0.0.1])\n by smtp2.osuosl.org (Postfix) with ESMTP id 387324008E\n for <intel-wired-lan@lists.osuosl.org>; Fri, 3 Apr 2026 05:40:46 +0000 (UTC)", "from smtp2.osuosl.org ([127.0.0.1])\n by localhost (smtp2.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP\n id AYJv-1VLT_bx for <intel-wired-lan@lists.osuosl.org>;\n Fri, 3 Apr 2026 05:40:45 +0000 (UTC)", "from mgamail.intel.com (mgamail.intel.com [198.175.65.20])\n by smtp2.osuosl.org (Postfix) with ESMTPS id 63A1640071\n for <intel-wired-lan@lists.osuosl.org>; Fri, 3 Apr 2026 05:40:45 +0000 (UTC)", "from fmviesa007.fm.intel.com ([10.60.135.147])\n by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;\n 02 Apr 2026 22:40:45 -0700", "from amlin-019-225.igk.intel.com ([10.102.19.225])\n by fmviesa007.fm.intel.com with ESMTP; 02 Apr 2026 22:40:44 -0700" ], "X-Virus-Scanned": [ "amavis at osuosl.org", "amavis at osuosl.org" ], "X-Comment": "SPF check N/A for local connections - client-ip=140.211.166.142;\n helo=lists1.osuosl.org; envelope-from=intel-wired-lan-bounces@osuosl.org;\n receiver=<UNKNOWN> ", "DKIM-Filter": [ "OpenDKIM Filter v2.11.0 smtp4.osuosl.org E2FC040E83", "OpenDKIM Filter v2.11.0 smtp2.osuosl.org 63A1640071" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org;\n\ts=default; t=1775194849;\n\tbh=HYfOhaScBI57s8uF+aOnVVxrGbvnYvmxP+1j5VoWcbM=;\n\th=From:To:Cc:Date:In-Reply-To:References:Subject:List-Id:\n\t List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe:\n\t From;\n\tb=QxUZc9aLoiAmKC5bFsSKF5DQbpXicQuSreFIRotDjSqa47VNVtwN2Nui/Ebk8xaVU\n\t PZpf1ilifSuSGaQiJhAmf0/D7NKQUYoAYqCzjehqzbO2ArO9uy2R5t8dghlXfoasFE\n\t 5P60g0UssqQrD6NVwslwfXhSALdkwoNly3m1zvd8X/DTzvpjTP08y1f4mzX79Yvo2y\n\t xpJihbfWT9cUHr+V7s844tAx8+bXajZgaCeofP2i/PMGbikVNf9P4DNp52U1AFZnz9\n\t TZEvNWRSiFhkp5Hzf/a0uqPZvtu9hnvZuPyAGs/OCnmUT/MViNZpUIqDJC38UMlcwU\n\t iC34U/WaYweRA==", "Received-SPF": "Pass (mailfrom) identity=mailfrom; client-ip=198.175.65.20;\n helo=mgamail.intel.com; envelope-from=aleksandr.loktionov@intel.com;\n receiver=<UNKNOWN>", "DMARC-Filter": "OpenDMARC Filter v1.4.2 smtp2.osuosl.org 63A1640071", "X-CSE-ConnectionGUID": [ "iedwA6z0R/SgnXFyfYeBXw==", "DHKv9Q/bSWOapH5+nk6vsw==" ], "X-CSE-MsgGUID": [ "9yGXEjqwSNaODKNab8PvsQ==", "F7TH3JMjRbyWiRLV0GQgwg==" ], "X-IronPort-AV": [ "E=McAfee;i=\"6800,10657,11747\"; a=\"75981760\"", "E=Sophos;i=\"6.23,157,1770624000\"; d=\"scan'208\";a=\"75981760\"", "E=Sophos;i=\"6.23,157,1770624000\"; d=\"scan'208\";a=\"223904951\"" ], "X-ExtLoop1": "1", "From": "Aleksandr Loktionov <aleksandr.loktionov@intel.com>", "To": "intel-wired-lan@lists.osuosl.org, anthony.l.nguyen@intel.com,\n aleksandr.loktionov@intel.com", "Cc": "netdev@vger.kernel.org", "Date": "Fri, 3 Apr 2026 07:40:28 +0200", "Message-ID": "<20260403054029.3789616-11-aleksandr.loktionov@intel.com>", "X-Mailer": "git-send-email 2.52.0", "In-Reply-To": "<20260403054029.3789616-1-aleksandr.loktionov@intel.com>", "References": "<20260403054029.3789616-1-aleksandr.loktionov@intel.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Mailman-Original-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple;\n d=intel.com; i=@intel.com; q=dns/txt; s=Intel;\n t=1775194846; x=1806730846;\n h=from:to:cc:subject:date:message-id:in-reply-to:\n references:mime-version:content-transfer-encoding;\n bh=nFD8pkeZbVN+oILrj3B+/KCNeAfTezohFmcf1myKIyA=;\n b=IXvB8TokZmpmzlZoE6usHYl1XajSpfttSpplSDPltYEEDQz23+sTXxPt\n Ecgs4VJxY6jYruIpsdohPuVxmujLiS2nDdMn1xjMEFpVgWSoTbFvFyPMw\n OuaaQhFI+jUkk5rWoTjIqSV5p2ldNGPXEaBtsBR2eEbOzS9tW7meb+KtH\n hrufGo5s14S+lHFiaz0+WiX59wl8vFI53Fon1EpAOSKPgpDWvB9v3sChM\n BnTH+BXKlFBbubqrfq6WJ/3JmyBxWZaVlRlDbT54ZYf8BhUMuG4yS9XSK\n CaYrPPWYfjbnTfosRknEOVxtoFrqyecG9iNpBID/Fdsx5e3Kk3gp4JnSV\n w==;", "X-Mailman-Original-Authentication-Results": [ "smtp2.osuosl.org;\n dmarc=pass (p=none dis=none)\n header.from=intel.com", "smtp2.osuosl.org;\n dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com\n header.a=rsa-sha256 header.s=Intel header.b=IXvB8Tok" ], "Subject": "[Intel-wired-lan] [PATCH iwl-net 10/10] ice: allow setting\n min_tx_rate to 0 to resolve VF bandwidth oversubscription", "X-BeenThere": "intel-wired-lan@osuosl.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Intel Wired Ethernet Linux Kernel Driver Development\n <intel-wired-lan.osuosl.org>", "List-Unsubscribe": "<https://lists.osuosl.org/mailman/options/intel-wired-lan>,\n <mailto:intel-wired-lan-request@osuosl.org?subject=unsubscribe>", "List-Archive": "<http://lists.osuosl.org/pipermail/intel-wired-lan/>", "List-Post": "<mailto:intel-wired-lan@osuosl.org>", "List-Help": "<mailto:intel-wired-lan-request@osuosl.org?subject=help>", "List-Subscribe": "<https://lists.osuosl.org/mailman/listinfo/intel-wired-lan>,\n <mailto:intel-wired-lan-request@osuosl.org?subject=subscribe>", "Errors-To": "intel-wired-lan-bounces@osuosl.org", "Sender": "\"Intel-wired-lan\" <intel-wired-lan-bounces@osuosl.org>" }, "content": "ice_set_vf_bw() refuses to accept any min_tx_rate value when the\ntotal guaranteed bandwidth is already oversubscribed, even when the\nrequested value is 0. This makes it impossible to recover from an\noversubscribed state via \"ip link set <pf> vf <id> min_tx_rate 0\".\n\nAllow a zero min_tx_rate to bypass the oversubscription check so\nusers can always clear the guaranteed rate. Additionally print an\ninformational message when the oversubscription guard fires to help\ndiagnose why a non-zero request was rejected.\n\nFixes: 4ecc8633056b (\"ice: Add support for VF rate limiting\")\nCc: stable@vger.kernel.org\nSigned-off-by: Sudheer Mogilappagari <sudheer.mogilappagari@intel.com>\nSigned-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>\n---\n drivers/net/ethernet/intel/ice/ice_sriov.c | 8 +++++++-\n 1 file changed, 7 insertions(+), 1 deletion(-)", "diff": "diff --git a/drivers/net/ethernet/intel/ice/ice_sriov.c b/drivers/net/ethernet/intel/ice/ice_sriov.c\nindex 7e00e09..6e3bec7 100644\n--- a/drivers/net/ethernet/intel/ice/ice_sriov.c\n+++ b/drivers/net/ethernet/intel/ice/ice_sriov.c\n@@ -1507,6 +1507,12 @@ ice_min_tx_rate_oversubscribed(struct ice_vf *vf, int min_tx_rate)\n \tall_vfs_min_tx_rate -= vf->min_tx_rate;\n \n \tif (all_vfs_min_tx_rate + min_tx_rate > link_speed_mbps) {\n+\t\tif (ice_calc_all_vfs_min_tx_rate(vf->pf) > link_speed_mbps) {\n+\t\t\tdev_info(ice_pf_to_dev(vf->pf),\n+\t\t\t\t \"The sum of min_tx_rate for all VFs is greater than the link speed\\n\");\n+\t\t\tdev_info(ice_pf_to_dev(vf->pf),\n+\t\t\t\t \"Set min_tx_rate to 0 on VFs to resolve oversubscription\\n\");\n+\t\t}\n \t\tdev_err(ice_pf_to_dev(vf->pf), \"min_tx_rate of %d Mbps on VF %u would cause oversubscription of %d Mbps based on the current link speed %d Mbps\\n\",\n \t\t\tmin_tx_rate, vf->vf_id,\n \t\t\tall_vfs_min_tx_rate + min_tx_rate - link_speed_mbps,\n@@ -1556,7 +1562,7 @@ ice_set_vf_bw(struct net_device *netdev, int vf_id, int min_tx_rate,\n \t\tgoto out_put_vf;\n \t}\n \n-\tif (ice_min_tx_rate_oversubscribed(vf, min_tx_rate)) {\n+\tif (min_tx_rate && ice_min_tx_rate_oversubscribed(vf, min_tx_rate)) {\n \t\tret = -EINVAL;\n \t\tgoto out_put_vf;\n \t}\n", "prefixes": [ "iwl-net", "10/10" ] }