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 Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 91BEFC43334 for ; Thu, 21 Jul 2022 21:15:47 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 254C960AD2; Thu, 21 Jul 2022 21:15:47 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org 254C960AD2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org; s=default; t=1658438147; bh=KsV/yiwE/PfgnYSoTeTDuvgjZKtSbPUP+/EHRd6O4JA=; h=From:To:Date:In-Reply-To:References:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: Cc:From; b=FK5NZ6A//klV0zNpzavKR0lRyfq6svPWdw5voSYa156BAik236PGCVwoaCKf6DsVq NA9x62nwH9zslCWRgPxxWkRPr2X3opgb/x8D/K3AImih5f7w5GNGbpnCkwKgo2NQ6/ J3GJncLX5ssr+sXX8WWE1an6L9WsIVuNs8F4jf3V/Ihq/7m4PgJcWkCf56kXcWqINC 2pk3ZVqQx6D+4wrzwmfGtkjs8SJsSeHV1G7834Bgj/idGr/PPoQRg3pKU9PkML3XWD kRi2ssnHg3iDrUYTDp7C4osRTSbsuT9UHt/u632KbGV1xnIV8fNiGxRbrOM6L+WE// 5JunLi9pGGR6g== X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gGBtkdhDD4te; Thu, 21 Jul 2022 21:15:46 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by smtp3.osuosl.org (Postfix) with ESMTP id 273A760B8C; Thu, 21 Jul 2022 21:15:46 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp3.osuosl.org 273A760B8C Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by ash.osuosl.org (Postfix) with ESMTP id DAD491BF375 for ; Thu, 21 Jul 2022 21:15:42 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id B3DE3818CD for ; Thu, 21 Jul 2022 21:15:42 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org B3DE3818CD X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oAU51xmkRB7T for ; Thu, 21 Jul 2022 21:15:42 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org F3F02818C9 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by smtp1.osuosl.org (Postfix) with ESMTPS id F3F02818C9 for ; Thu, 21 Jul 2022 21:15:41 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6400,9594,10415"; a="284729034" X-IronPort-AV: E=Sophos;i="5.93,183,1654585200"; d="scan'208";a="284729034" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2022 14:15:00 -0700 X-IronPort-AV: E=Sophos;i="5.93,183,1654585200"; d="scan'208";a="925816223" Received: from jekeller-desk.amr.corp.intel.com ([10.166.241.7]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2022 14:15:00 -0700 From: Jacob Keller To: netdev@vger.kernel.org Date: Thu, 21 Jul 2022 14:14:50 -0700 Message-Id: <20220721211451.2475600-6-jacob.e.keller@intel.com> X-Mailer: git-send-email 2.35.1.456.ga9c7032d4631 In-Reply-To: <20220721211451.2475600-1-jacob.e.keller@intel.com> References: <20220721211451.2475600-1-jacob.e.keller@intel.com> MIME-Version: 1.0 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1658438142; x=1689974142; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=/DbLDxdU8oHRtgWd+kF8AfuKz6dLM/ogY++Th6kdzbU=; b=PW2vn7EJnZHYQcja44egvREkNVVP8Feqcqzh9eUPDEai4zrWnM7a+TRf dWj0SncAAwzh3MsSlT2Fb0L77N0L21MWLvSE1WNEHHxILCndejjt3Xloh oxdxCIi09uS5nZcO0vMa3vBE77VK/IcTbYqwpgWXsmHJZ5c2yAYDNT/bd 9yoAGfC8Wurmz6cmWfToa0nyQCqbZYwLDGQTOkjm7YQYw40CrA2sfOrrG GwCDYHQC6XhFSrft/BXal3IezhhkLV/y7vFWGUs0VxoOwp3gTQYup7H21 CUqBXWTDOXWzsiFfTp0pmPhjqJfkmHO08Iyieq+I+v1yW1BWrtpu4jaxF g==; X-Mailman-Original-Authentication-Results: smtp1.osuosl.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=PW2vn7EJ Subject: [Intel-wired-lan] [iproute2-next v2 2/3] mnlg: add function to get CTRL_ATTR_MAXATTR value X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jonathan Corbet , intel-wired-lan@lists.osuosl.org, David Ahern , linux-doc@vger.kernel.org, Stephen Hemminger , Eric Dumazet , Jiri Pirko , Jakub Kicinski , Paolo Abeni , "David S. Miller" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" Add a new function to extract the CTRL_ATTR_MAXATTR attribute of the CTRL_CMD_GETFAMILY request. This will be used to allow reading the maximum supported devlink attribute of the running kernel in an upcoming change. Signed-off-by: Jacob Keller --- devlink/mnlg.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++ devlink/mnlg.h | 1 + 2 files changed, 57 insertions(+) diff --git a/devlink/mnlg.c b/devlink/mnlg.c index e6d92742c150..348c3ff5c959 100644 --- a/devlink/mnlg.c +++ b/devlink/mnlg.c @@ -41,6 +41,10 @@ struct group_info { const char *name; }; +struct family_info { + uint32_t max_attr; +}; + static int parse_mc_grps_cb(const struct nlattr *attr, void *data) { const struct nlattr **tb = data; @@ -149,6 +153,58 @@ int mnlg_socket_group_add(struct mnlu_gen_socket *nlg, const char *group_name) return 0; } +static int get_family_attr_cb(const struct nlattr *attr, void *data) +{ + const struct nlattr **tb = data; + int type = mnl_attr_get_type(attr); + + if (mnl_attr_type_valid(attr, CTRL_ATTR_MAX) < 0) + return MNL_CB_ERROR; + + tb[type] = attr; + return MNL_CB_OK; +} + +static int get_family_cb(const struct nlmsghdr *nlh, void *data) +{ + struct family_info *family = data; + struct nlattr *tb[CTRL_ATTR_MAX + 1] = {}; + struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); + + mnl_attr_parse(nlh, sizeof(*genl), get_family_attr_cb, tb); + if (!tb[CTRL_ATTR_MAXATTR]) + return MNL_CB_ERROR; + + family->max_attr = mnl_attr_get_u32(tb[CTRL_ATTR_MAXATTR]); + + return MNL_CB_OK; +} + +int mnlg_socket_get_max_attr(struct mnlu_gen_socket *nlg, uint32_t *max_attr) +{ + struct nlmsghdr *nlh; + struct family_info family; + int err; + + nlh = _mnlu_gen_socket_cmd_prepare(nlg, CTRL_CMD_GETFAMILY, + NLM_F_REQUEST | NLM_F_ACK, + GENL_ID_CTRL, 1); + + mnl_attr_put_u16(nlh, CTRL_ATTR_FAMILY_ID, nlg->family); + + err = mnlg_socket_send(nlg, nlh); + if (err < 0) + return err; + + err = mnlu_gen_socket_recv_run(nlg, get_family_cb, &family); + if (err < 0) + return err; + + *max_attr = family.max_attr; + + return 0; +} + int mnlg_socket_get_fd(struct mnlu_gen_socket *nlg) { return mnl_socket_get_fd(nlg->nl); diff --git a/devlink/mnlg.h b/devlink/mnlg.h index 24aa17566a9b..6348ad45ed26 100644 --- a/devlink/mnlg.h +++ b/devlink/mnlg.h @@ -18,6 +18,7 @@ struct mnlu_gen_socket; int mnlg_socket_send(struct mnlu_gen_socket *nlg, const struct nlmsghdr *nlh); int mnlg_socket_group_add(struct mnlu_gen_socket *nlg, const char *group_name); +int mnlg_socket_get_max_attr(struct mnlu_gen_socket *nlg, uint32_t *max_attr); int mnlg_socket_get_fd(struct mnlu_gen_socket *nlg); #endif /* _MNLG_H_ */ -- 2.36.1 _______________________________________________ Intel-wired-lan mailing list Intel-wired-lan@osuosl.org https://lists.osuosl.org/mailman/listinfo/intel-wired-lan