From patchwork Mon Oct 5 22:07:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakub Kicinski X-Patchwork-Id: 288965 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=-13.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 A9BEDC4727E for ; Mon, 5 Oct 2020 22:08:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 645CE20789 for ; Mon, 5 Oct 2020 22:08:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601935681; bh=YK3OaesWLhyAAmwJWLkrouFzkIbIhCAx/gAfM8IZxkE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Zau4FzpPHL9HSsm5tZfnuIljVdAlLTmKJkaPxMUPnAwAO5dTYs31qXeXooeUpTZX4 JU9EoBw4/csKP9fuwizorVsD3sxTcg8shyKCg0WS5jOR7BjWLgcidYONTEVrl6v4pR UTU3bu9CwJKA5SOsinyMc5SsfNuSBcx3yFihmyek= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727077AbgJEWHy (ORCPT ); Mon, 5 Oct 2020 18:07:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:48170 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727007AbgJEWHv (ORCPT ); Mon, 5 Oct 2020 18:07:51 -0400 Received: from kicinski-fedora-PC1C0HJN.thefacebook.com (unknown [163.114.132.6]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 381B120789; Mon, 5 Oct 2020 22:07:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601935669; bh=YK3OaesWLhyAAmwJWLkrouFzkIbIhCAx/gAfM8IZxkE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ooG3gwGFxaY3gBUuB9fz2Ikm00u79P2LYd70fxjLOdh77kCNvrxpQn/BZh08gP5pQ p0sn5OfK1IPYbRA+bZuG7SPB3Qb5AMC+vPjrQawmnSp9JBoE78MbLqlllp5KdQOjRF 7/b91Md+G6PyIZWm02jQSu030VMsTjAOsv/7pYoo= From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, kernel-team@fb.com, johannes@sipsolutions.net, jiri@resnulli.us, andrew@lunn.ch, mkubecek@suse.cz, Jakub Kicinski Subject: [PATCH net-next v2 1/7] ethtool: wire up get policies to ops Date: Mon, 5 Oct 2020 15:07:33 -0700 Message-Id: <20201005220739.2581920-2-kuba@kernel.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201005220739.2581920-1-kuba@kernel.org> References: <20201005220739.2581920-1-kuba@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Wire up policies for get commands in struct nla_policy of the ethtool family. Make use of genetlink code attr validation and parsing, as well as allow dumping policies to user space. For every ETHTOOL_MSG_*_GET: - add 'ethnl_' prefix to policy name - add extern declaration in net/ethtool/netlink.h - wire up the policy & attr in ethtool_genl_ops[]. - remove .request_policy and .max_attr from ethnl_request_ops. Obviously core only records the first "layer" of parsed attrs so we still need to parse the sub-attrs of the nested header attribute. v2: - merge of patches 1 and 2 from v1 - remove stray empty lines in ops - also remove .max_attr Signed-off-by: Jakub Kicinski --- net/ethtool/channels.c | 6 ++-- net/ethtool/coalesce.c | 6 ++-- net/ethtool/debug.c | 5 +--- net/ethtool/eee.c | 5 +--- net/ethtool/features.c | 6 ++-- net/ethtool/linkinfo.c | 6 ++-- net/ethtool/linkmodes.c | 6 ++-- net/ethtool/linkstate.c | 6 ++-- net/ethtool/netlink.c | 62 ++++++++++++++++++++++++++--------------- net/ethtool/netlink.h | 20 ++++++++++--- net/ethtool/pause.c | 5 +--- net/ethtool/privflags.c | 6 ++-- net/ethtool/rings.c | 5 +--- net/ethtool/strset.c | 4 +-- net/ethtool/tsinfo.c | 5 +--- net/ethtool/tunnels.c | 39 +++++++++----------------- net/ethtool/wol.c | 5 +--- 17 files changed, 90 insertions(+), 107 deletions(-) diff --git a/net/ethtool/channels.c b/net/ethtool/channels.c index 9ecda09ecb11..6ffcea099fd3 100644 --- a/net/ethtool/channels.c +++ b/net/ethtool/channels.c @@ -17,8 +17,8 @@ struct channels_reply_data { #define CHANNELS_REPDATA(__reply_base) \ container_of(__reply_base, struct channels_reply_data, base) -static const struct nla_policy -channels_get_policy[ETHTOOL_A_CHANNELS_MAX + 1] = { +const struct nla_policy +ethnl_channels_get_policy[ETHTOOL_A_CHANNELS_MAX + 1] = { [ETHTOOL_A_CHANNELS_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_CHANNELS_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_CHANNELS_RX_MAX] = { .type = NLA_REJECT }, @@ -99,10 +99,8 @@ const struct ethnl_request_ops ethnl_channels_request_ops = { .request_cmd = ETHTOOL_MSG_CHANNELS_GET, .reply_cmd = ETHTOOL_MSG_CHANNELS_GET_REPLY, .hdr_attr = ETHTOOL_A_CHANNELS_HEADER, - .max_attr = ETHTOOL_A_CHANNELS_MAX, .req_info_size = sizeof(struct channels_req_info), .reply_data_size = sizeof(struct channels_reply_data), - .request_policy = channels_get_policy, .prepare_data = channels_prepare_data, .reply_size = channels_reply_size, diff --git a/net/ethtool/coalesce.c b/net/ethtool/coalesce.c index 6afd99042d67..58a2eb375135 100644 --- a/net/ethtool/coalesce.c +++ b/net/ethtool/coalesce.c @@ -51,8 +51,8 @@ __CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_HIGH); __CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_HIGH); __CHECK_SUPPORTED_OFFSET(COALESCE_RATE_SAMPLE_INTERVAL); -static const struct nla_policy -coalesce_get_policy[ETHTOOL_A_COALESCE_MAX + 1] = { +const struct nla_policy +ethnl_coalesce_get_policy[ETHTOOL_A_COALESCE_MAX + 1] = { [ETHTOOL_A_COALESCE_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_COALESCE_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_COALESCE_RX_USECS] = { .type = NLA_REJECT }, @@ -203,10 +203,8 @@ const struct ethnl_request_ops ethnl_coalesce_request_ops = { .request_cmd = ETHTOOL_MSG_COALESCE_GET, .reply_cmd = ETHTOOL_MSG_COALESCE_GET_REPLY, .hdr_attr = ETHTOOL_A_COALESCE_HEADER, - .max_attr = ETHTOOL_A_COALESCE_MAX, .req_info_size = sizeof(struct coalesce_req_info), .reply_data_size = sizeof(struct coalesce_reply_data), - .request_policy = coalesce_get_policy, .prepare_data = coalesce_prepare_data, .reply_size = coalesce_reply_size, diff --git a/net/ethtool/debug.c b/net/ethtool/debug.c index 1bd026a29f3f..67623ae94d41 100644 --- a/net/ethtool/debug.c +++ b/net/ethtool/debug.c @@ -16,8 +16,7 @@ struct debug_reply_data { #define DEBUG_REPDATA(__reply_base) \ container_of(__reply_base, struct debug_reply_data, base) -static const struct nla_policy -debug_get_policy[ETHTOOL_A_DEBUG_MAX + 1] = { +const struct nla_policy ethnl_debug_get_policy[ETHTOOL_A_DEBUG_MAX + 1] = { [ETHTOOL_A_DEBUG_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_DEBUG_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_REJECT }, @@ -69,10 +68,8 @@ const struct ethnl_request_ops ethnl_debug_request_ops = { .request_cmd = ETHTOOL_MSG_DEBUG_GET, .reply_cmd = ETHTOOL_MSG_DEBUG_GET_REPLY, .hdr_attr = ETHTOOL_A_DEBUG_HEADER, - .max_attr = ETHTOOL_A_DEBUG_MAX, .req_info_size = sizeof(struct debug_req_info), .reply_data_size = sizeof(struct debug_reply_data), - .request_policy = debug_get_policy, .prepare_data = debug_prepare_data, .reply_size = debug_reply_size, diff --git a/net/ethtool/eee.c b/net/ethtool/eee.c index 94aa19cff22f..860e482533ba 100644 --- a/net/ethtool/eee.c +++ b/net/ethtool/eee.c @@ -19,8 +19,7 @@ struct eee_reply_data { #define EEE_REPDATA(__reply_base) \ container_of(__reply_base, struct eee_reply_data, base) -static const struct nla_policy -eee_get_policy[ETHTOOL_A_EEE_MAX + 1] = { +const struct nla_policy ethnl_eee_get_policy[ETHTOOL_A_EEE_MAX + 1] = { [ETHTOOL_A_EEE_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_EEE_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_EEE_MODES_OURS] = { .type = NLA_REJECT }, @@ -119,10 +118,8 @@ const struct ethnl_request_ops ethnl_eee_request_ops = { .request_cmd = ETHTOOL_MSG_EEE_GET, .reply_cmd = ETHTOOL_MSG_EEE_GET_REPLY, .hdr_attr = ETHTOOL_A_EEE_HEADER, - .max_attr = ETHTOOL_A_EEE_MAX, .req_info_size = sizeof(struct eee_req_info), .reply_data_size = sizeof(struct eee_reply_data), - .request_policy = eee_get_policy, .prepare_data = eee_prepare_data, .reply_size = eee_reply_size, diff --git a/net/ethtool/features.c b/net/ethtool/features.c index 495635f152ba..bc1b1c74b1f5 100644 --- a/net/ethtool/features.c +++ b/net/ethtool/features.c @@ -20,8 +20,8 @@ struct features_reply_data { #define FEATURES_REPDATA(__reply_base) \ container_of(__reply_base, struct features_reply_data, base) -static const struct nla_policy -features_get_policy[ETHTOOL_A_FEATURES_MAX + 1] = { +const struct nla_policy +ethnl_features_get_policy[ETHTOOL_A_FEATURES_MAX + 1] = { [ETHTOOL_A_FEATURES_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_FEATURES_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_FEATURES_HW] = { .type = NLA_REJECT }, @@ -120,10 +120,8 @@ const struct ethnl_request_ops ethnl_features_request_ops = { .request_cmd = ETHTOOL_MSG_FEATURES_GET, .reply_cmd = ETHTOOL_MSG_FEATURES_GET_REPLY, .hdr_attr = ETHTOOL_A_FEATURES_HEADER, - .max_attr = ETHTOOL_A_FEATURES_MAX, .req_info_size = sizeof(struct features_req_info), .reply_data_size = sizeof(struct features_reply_data), - .request_policy = features_get_policy, .prepare_data = features_prepare_data, .reply_size = features_reply_size, diff --git a/net/ethtool/linkinfo.c b/net/ethtool/linkinfo.c index 5eaf173eaaca..eea75524e983 100644 --- a/net/ethtool/linkinfo.c +++ b/net/ethtool/linkinfo.c @@ -16,8 +16,8 @@ struct linkinfo_reply_data { #define LINKINFO_REPDATA(__reply_base) \ container_of(__reply_base, struct linkinfo_reply_data, base) -static const struct nla_policy -linkinfo_get_policy[ETHTOOL_A_LINKINFO_MAX + 1] = { +const struct nla_policy +ethnl_linkinfo_get_policy[ETHTOOL_A_LINKINFO_MAX + 1] = { [ETHTOOL_A_LINKINFO_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_LINKINFO_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_LINKINFO_PORT] = { .type = NLA_REJECT }, @@ -83,10 +83,8 @@ const struct ethnl_request_ops ethnl_linkinfo_request_ops = { .request_cmd = ETHTOOL_MSG_LINKINFO_GET, .reply_cmd = ETHTOOL_MSG_LINKINFO_GET_REPLY, .hdr_attr = ETHTOOL_A_LINKINFO_HEADER, - .max_attr = ETHTOOL_A_LINKINFO_MAX, .req_info_size = sizeof(struct linkinfo_req_info), .reply_data_size = sizeof(struct linkinfo_reply_data), - .request_policy = linkinfo_get_policy, .prepare_data = linkinfo_prepare_data, .reply_size = linkinfo_reply_size, diff --git a/net/ethtool/linkmodes.c b/net/ethtool/linkmodes.c index 29dcd675b65a..8e0b4a12f875 100644 --- a/net/ethtool/linkmodes.c +++ b/net/ethtool/linkmodes.c @@ -18,8 +18,8 @@ struct linkmodes_reply_data { #define LINKMODES_REPDATA(__reply_base) \ container_of(__reply_base, struct linkmodes_reply_data, base) -static const struct nla_policy -linkmodes_get_policy[ETHTOOL_A_LINKMODES_MAX + 1] = { +const struct nla_policy +ethnl_linkmodes_get_policy[ETHTOOL_A_LINKMODES_MAX + 1] = { [ETHTOOL_A_LINKMODES_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_LINKMODES_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_LINKMODES_AUTONEG] = { .type = NLA_REJECT }, @@ -148,10 +148,8 @@ const struct ethnl_request_ops ethnl_linkmodes_request_ops = { .request_cmd = ETHTOOL_MSG_LINKMODES_GET, .reply_cmd = ETHTOOL_MSG_LINKMODES_GET_REPLY, .hdr_attr = ETHTOOL_A_LINKMODES_HEADER, - .max_attr = ETHTOOL_A_LINKMODES_MAX, .req_info_size = sizeof(struct linkmodes_req_info), .reply_data_size = sizeof(struct linkmodes_reply_data), - .request_policy = linkmodes_get_policy, .prepare_data = linkmodes_prepare_data, .reply_size = linkmodes_reply_size, diff --git a/net/ethtool/linkstate.c b/net/ethtool/linkstate.c index 4834091ec24c..ebd6dcff1dad 100644 --- a/net/ethtool/linkstate.c +++ b/net/ethtool/linkstate.c @@ -20,8 +20,8 @@ struct linkstate_reply_data { #define LINKSTATE_REPDATA(__reply_base) \ container_of(__reply_base, struct linkstate_reply_data, base) -static const struct nla_policy -linkstate_get_policy[ETHTOOL_A_LINKSTATE_MAX + 1] = { +const struct nla_policy +ethnl_linkstate_get_policy[ETHTOOL_A_LINKSTATE_MAX + 1] = { [ETHTOOL_A_LINKSTATE_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_LINKSTATE_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_LINKSTATE_LINK] = { .type = NLA_REJECT }, @@ -179,10 +179,8 @@ const struct ethnl_request_ops ethnl_linkstate_request_ops = { .request_cmd = ETHTOOL_MSG_LINKSTATE_GET, .reply_cmd = ETHTOOL_MSG_LINKSTATE_GET_REPLY, .hdr_attr = ETHTOOL_A_LINKSTATE_HEADER, - .max_attr = ETHTOOL_A_LINKSTATE_MAX, .req_info_size = sizeof(struct linkstate_req_info), .reply_data_size = sizeof(struct linkstate_reply_data), - .request_policy = linkstate_get_policy, .prepare_data = linkstate_prepare_data, .reply_size = linkstate_reply_size, diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c index 5c2072765be7..98031bdd8e8e 100644 --- a/net/ethtool/netlink.c +++ b/net/ethtool/netlink.c @@ -247,7 +247,7 @@ static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) /** * ethnl_default_parse() - Parse request message * @req_info: pointer to structure to put data into - * @nlhdr: pointer to request message header + * @tb: parsed attributes * @net: request netns * @request_ops: struct request_ops for request type * @extack: netlink extack for error reporting @@ -259,37 +259,24 @@ static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) * Return: 0 on success or negative error code */ static int ethnl_default_parse(struct ethnl_req_info *req_info, - const struct nlmsghdr *nlhdr, struct net *net, + struct nlattr **tb, struct net *net, const struct ethnl_request_ops *request_ops, struct netlink_ext_ack *extack, bool require_dev) { - struct nlattr **tb; int ret; - tb = kmalloc_array(request_ops->max_attr + 1, sizeof(tb[0]), - GFP_KERNEL); - if (!tb) - return -ENOMEM; - - ret = nlmsg_parse(nlhdr, GENL_HDRLEN, tb, request_ops->max_attr, - request_ops->request_policy, extack); - if (ret < 0) - goto out; ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], net, extack, require_dev); if (ret < 0) - goto out; + return ret; if (request_ops->parse_request) { ret = request_ops->parse_request(req_info, tb, extack); if (ret < 0) - goto out; + return ret; } - ret = 0; -out: - kfree(tb); - return ret; + return 0; } /** @@ -334,8 +321,8 @@ static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info) return -ENOMEM; } - ret = ethnl_default_parse(req_info, info->nlhdr, genl_info_net(info), ops, - info->extack, !ops->allow_nodev_do); + ret = ethnl_default_parse(req_info, info->attrs, genl_info_net(info), + ops, info->extack, !ops->allow_nodev_do); if (ret < 0) goto err_dev; ethnl_init_reply_data(reply_data, ops, req_info->dev); @@ -480,6 +467,7 @@ static int ethnl_default_dumpit(struct sk_buff *skb, /* generic ->start() handler for GET requests */ static int ethnl_default_start(struct netlink_callback *cb) { + const struct genl_dumpit_info *info = genl_dumpit_info(cb); struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); struct ethnl_reply_data *reply_data; const struct ethnl_request_ops *ops; @@ -502,8 +490,8 @@ static int ethnl_default_start(struct netlink_callback *cb) goto free_req_info; } - ret = ethnl_default_parse(req_info, cb->nlh, sock_net(cb->skb->sk), ops, - cb->extack, false); + ret = ethnl_default_parse(req_info, info->attrs, sock_net(cb->skb->sk), + ops, cb->extack, false); if (req_info->dev) { /* We ignore device specification in dump requests but as the * same parser as for non-dump (doit) requests is used, it @@ -696,6 +684,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_strset_get_policy, + .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_LINKINFO_GET, @@ -703,6 +693,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_linkinfo_get_policy, + .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_LINKINFO_SET, @@ -715,6 +707,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_linkmodes_get_policy, + .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_LINKMODES_SET, @@ -727,6 +721,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_linkstate_get_policy, + .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_DEBUG_GET, @@ -734,6 +730,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_debug_get_policy, + .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_DEBUG_SET, @@ -747,6 +745,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_wol_get_policy, + .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_WOL_SET, @@ -759,6 +759,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_features_get_policy, + .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_FEATURES_SET, @@ -771,6 +773,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_privflags_get_policy, + .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, @@ -783,6 +787,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_rings_get_policy, + .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_RINGS_SET, @@ -795,6 +801,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_channels_get_policy, + .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_CHANNELS_SET, @@ -807,6 +815,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_coalesce_get_policy, + .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_COALESCE_SET, @@ -819,6 +829,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_pause_get_policy, + .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_PAUSE_SET, @@ -831,6 +843,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_eee_get_policy, + .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_EEE_SET, @@ -843,6 +857,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .start = ethnl_default_start, .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, + .policy = ethnl_tsinfo_get_policy, + .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, }, { .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, @@ -859,6 +875,8 @@ static const struct genl_ops ethtool_genl_ops[] = { .doit = ethnl_tunnel_info_doit, .start = ethnl_tunnel_info_start, .dumpit = ethnl_tunnel_info_dumpit, + .policy = ethnl_tunnel_info_get_policy, + .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, }, }; diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h index e2085005caac..d150f5f5e92b 100644 --- a/net/ethtool/netlink.h +++ b/net/ethtool/netlink.h @@ -266,10 +266,8 @@ static inline void ethnl_ops_complete(struct net_device *dev) * @request_cmd: command id for request (GET) * @reply_cmd: command id for reply (GET_REPLY) * @hdr_attr: attribute type for request header - * @max_attr: maximum (top level) attribute type * @req_info_size: size of request info * @reply_data_size: size of reply data - * @request_policy: netlink policy for message contents * @allow_nodev_do: allow non-dump request with no device identification * @parse_request: * Parse request except common header (struct ethnl_req_info). Common @@ -312,10 +310,8 @@ struct ethnl_request_ops { u8 request_cmd; u8 reply_cmd; u16 hdr_attr; - unsigned int max_attr; unsigned int req_info_size; unsigned int reply_data_size; - const struct nla_policy *request_policy; bool allow_nodev_do; int (*parse_request)(struct ethnl_req_info *req_info, @@ -349,6 +345,22 @@ extern const struct ethnl_request_ops ethnl_pause_request_ops; extern const struct ethnl_request_ops ethnl_eee_request_ops; extern const struct ethnl_request_ops ethnl_tsinfo_request_ops; +extern const struct nla_policy ethnl_strset_get_policy[ETHTOOL_A_STRSET_MAX + 1]; +extern const struct nla_policy ethnl_linkinfo_get_policy[ETHTOOL_A_LINKINFO_MAX + 1]; +extern const struct nla_policy ethnl_linkmodes_get_policy[ETHTOOL_A_LINKMODES_MAX + 1]; +extern const struct nla_policy ethnl_linkstate_get_policy[ETHTOOL_A_LINKSTATE_MAX + 1]; +extern const struct nla_policy ethnl_debug_get_policy[ETHTOOL_A_DEBUG_MAX + 1]; +extern const struct nla_policy ethnl_wol_get_policy[ETHTOOL_A_WOL_MAX + 1]; +extern const struct nla_policy ethnl_features_get_policy[ETHTOOL_A_FEATURES_MAX + 1]; +extern const struct nla_policy ethnl_privflags_get_policy[ETHTOOL_A_PRIVFLAGS_MAX + 1]; +extern const struct nla_policy ethnl_rings_get_policy[ETHTOOL_A_RINGS_MAX + 1]; +extern const struct nla_policy ethnl_channels_get_policy[ETHTOOL_A_CHANNELS_MAX + 1]; +extern const struct nla_policy ethnl_coalesce_get_policy[ETHTOOL_A_COALESCE_MAX + 1]; +extern const struct nla_policy ethnl_pause_get_policy[ETHTOOL_A_PAUSE_MAX + 1]; +extern const struct nla_policy ethnl_eee_get_policy[ETHTOOL_A_EEE_MAX + 1]; +extern const struct nla_policy ethnl_tsinfo_get_policy[ETHTOOL_A_TSINFO_MAX + 1]; +extern const struct nla_policy ethnl_tunnel_info_get_policy[ETHTOOL_A_TUNNEL_INFO_MAX + 1]; + int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info); int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info); int ethnl_set_debug(struct sk_buff *skb, struct genl_info *info); diff --git a/net/ethtool/pause.c b/net/ethtool/pause.c index 1980aa7eb2b6..f753094fc52a 100644 --- a/net/ethtool/pause.c +++ b/net/ethtool/pause.c @@ -16,8 +16,7 @@ struct pause_reply_data { #define PAUSE_REPDATA(__reply_base) \ container_of(__reply_base, struct pause_reply_data, base) -static const struct nla_policy -pause_get_policy[ETHTOOL_A_PAUSE_MAX + 1] = { +const struct nla_policy ethnl_pause_get_policy[ETHTOOL_A_PAUSE_MAX + 1] = { [ETHTOOL_A_PAUSE_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_PAUSE_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_PAUSE_AUTONEG] = { .type = NLA_REJECT }, @@ -130,10 +129,8 @@ const struct ethnl_request_ops ethnl_pause_request_ops = { .request_cmd = ETHTOOL_MSG_PAUSE_GET, .reply_cmd = ETHTOOL_MSG_PAUSE_GET_REPLY, .hdr_attr = ETHTOOL_A_PAUSE_HEADER, - .max_attr = ETHTOOL_A_PAUSE_MAX, .req_info_size = sizeof(struct pause_req_info), .reply_data_size = sizeof(struct pause_reply_data), - .request_policy = pause_get_policy, .prepare_data = pause_prepare_data, .reply_size = pause_reply_size, diff --git a/net/ethtool/privflags.c b/net/ethtool/privflags.c index 77447dceb109..9dfdd9b3a19c 100644 --- a/net/ethtool/privflags.c +++ b/net/ethtool/privflags.c @@ -18,8 +18,8 @@ struct privflags_reply_data { #define PRIVFLAGS_REPDATA(__reply_base) \ container_of(__reply_base, struct privflags_reply_data, base) -static const struct nla_policy -privflags_get_policy[ETHTOOL_A_PRIVFLAGS_MAX + 1] = { +const struct nla_policy +ethnl_privflags_get_policy[ETHTOOL_A_PRIVFLAGS_MAX + 1] = { [ETHTOOL_A_PRIVFLAGS_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_PRIVFLAGS_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_PRIVFLAGS_FLAGS] = { .type = NLA_REJECT }, @@ -124,10 +124,8 @@ const struct ethnl_request_ops ethnl_privflags_request_ops = { .request_cmd = ETHTOOL_MSG_PRIVFLAGS_GET, .reply_cmd = ETHTOOL_MSG_PRIVFLAGS_GET_REPLY, .hdr_attr = ETHTOOL_A_PRIVFLAGS_HEADER, - .max_attr = ETHTOOL_A_PRIVFLAGS_MAX, .req_info_size = sizeof(struct privflags_req_info), .reply_data_size = sizeof(struct privflags_reply_data), - .request_policy = privflags_get_policy, .prepare_data = privflags_prepare_data, .reply_size = privflags_reply_size, diff --git a/net/ethtool/rings.c b/net/ethtool/rings.c index 5422526f4eef..006b70f54dd7 100644 --- a/net/ethtool/rings.c +++ b/net/ethtool/rings.c @@ -15,8 +15,7 @@ struct rings_reply_data { #define RINGS_REPDATA(__reply_base) \ container_of(__reply_base, struct rings_reply_data, base) -static const struct nla_policy -rings_get_policy[ETHTOOL_A_RINGS_MAX + 1] = { +const struct nla_policy ethnl_rings_get_policy[ETHTOOL_A_RINGS_MAX + 1] = { [ETHTOOL_A_RINGS_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_RINGS_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_RINGS_RX_MAX] = { .type = NLA_REJECT }, @@ -97,10 +96,8 @@ const struct ethnl_request_ops ethnl_rings_request_ops = { .request_cmd = ETHTOOL_MSG_RINGS_GET, .reply_cmd = ETHTOOL_MSG_RINGS_GET_REPLY, .hdr_attr = ETHTOOL_A_RINGS_HEADER, - .max_attr = ETHTOOL_A_RINGS_MAX, .req_info_size = sizeof(struct rings_req_info), .reply_data_size = sizeof(struct rings_reply_data), - .request_policy = rings_get_policy, .prepare_data = rings_prepare_data, .reply_size = rings_reply_size, diff --git a/net/ethtool/strset.c b/net/ethtool/strset.c index 82707b662fe4..9adff4668004 100644 --- a/net/ethtool/strset.c +++ b/net/ethtool/strset.c @@ -99,7 +99,7 @@ struct strset_reply_data { #define STRSET_REPDATA(__reply_base) \ container_of(__reply_base, struct strset_reply_data, base) -static const struct nla_policy strset_get_policy[ETHTOOL_A_STRSET_MAX + 1] = { +const struct nla_policy ethnl_strset_get_policy[ETHTOOL_A_STRSET_MAX + 1] = { [ETHTOOL_A_STRSET_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_STRSET_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_STRSET_STRINGSETS] = { .type = NLA_NESTED }, @@ -445,10 +445,8 @@ const struct ethnl_request_ops ethnl_strset_request_ops = { .request_cmd = ETHTOOL_MSG_STRSET_GET, .reply_cmd = ETHTOOL_MSG_STRSET_GET_REPLY, .hdr_attr = ETHTOOL_A_STRSET_HEADER, - .max_attr = ETHTOOL_A_STRSET_MAX, .req_info_size = sizeof(struct strset_req_info), .reply_data_size = sizeof(struct strset_reply_data), - .request_policy = strset_get_policy, .allow_nodev_do = true, .parse_request = strset_parse_request, diff --git a/net/ethtool/tsinfo.c b/net/ethtool/tsinfo.c index 7cb5b512b77c..21f0dc08cead 100644 --- a/net/ethtool/tsinfo.c +++ b/net/ethtool/tsinfo.c @@ -18,8 +18,7 @@ struct tsinfo_reply_data { #define TSINFO_REPDATA(__reply_base) \ container_of(__reply_base, struct tsinfo_reply_data, base) -static const struct nla_policy -tsinfo_get_policy[ETHTOOL_A_TSINFO_MAX + 1] = { +const struct nla_policy ethnl_tsinfo_get_policy[ETHTOOL_A_TSINFO_MAX + 1] = { [ETHTOOL_A_TSINFO_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_TSINFO_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_TSINFO_TIMESTAMPING] = { .type = NLA_REJECT }, @@ -132,10 +131,8 @@ const struct ethnl_request_ops ethnl_tsinfo_request_ops = { .request_cmd = ETHTOOL_MSG_TSINFO_GET, .reply_cmd = ETHTOOL_MSG_TSINFO_GET_REPLY, .hdr_attr = ETHTOOL_A_TSINFO_HEADER, - .max_attr = ETHTOOL_A_TSINFO_MAX, .req_info_size = sizeof(struct tsinfo_req_info), .reply_data_size = sizeof(struct tsinfo_reply_data), - .request_policy = tsinfo_get_policy, .prepare_data = tsinfo_prepare_data, .reply_size = tsinfo_reply_size, diff --git a/net/ethtool/tunnels.c b/net/ethtool/tunnels.c index d93bf2da0f34..330817adcf62 100644 --- a/net/ethtool/tunnels.c +++ b/net/ethtool/tunnels.c @@ -8,8 +8,8 @@ #include "common.h" #include "netlink.h" -static const struct nla_policy -ethtool_tunnel_info_policy[ETHTOOL_A_TUNNEL_INFO_MAX + 1] = { +const struct nla_policy +ethnl_tunnel_info_get_policy[ETHTOOL_A_TUNNEL_INFO_MAX + 1] = { [ETHTOOL_A_TUNNEL_INFO_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_TUNNEL_INFO_HEADER] = { .type = NLA_NESTED }, }; @@ -161,35 +161,19 @@ ethnl_tunnel_info_fill_reply(const struct ethnl_req_info *req_base, return -EMSGSIZE; } -static int -ethnl_tunnel_info_req_parse(struct ethnl_req_info *req_info, - const struct nlmsghdr *nlhdr, struct net *net, - struct netlink_ext_ack *extack, bool require_dev) -{ - struct nlattr *tb[ETHTOOL_A_TUNNEL_INFO_MAX + 1]; - int ret; - - ret = nlmsg_parse(nlhdr, GENL_HDRLEN, tb, ETHTOOL_A_TUNNEL_INFO_MAX, - ethtool_tunnel_info_policy, extack); - if (ret < 0) - return ret; - - return ethnl_parse_header_dev_get(req_info, - tb[ETHTOOL_A_TUNNEL_INFO_HEADER], - net, extack, require_dev); -} - int ethnl_tunnel_info_doit(struct sk_buff *skb, struct genl_info *info) { struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; struct sk_buff *rskb; void *reply_payload; int reply_len; int ret; - ret = ethnl_tunnel_info_req_parse(&req_info, info->nlhdr, - genl_info_net(info), info->extack, - true); + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_TUNNEL_INFO_HEADER], + genl_info_net(info), info->extack, + true); if (ret < 0) return ret; @@ -233,16 +217,19 @@ struct ethnl_tunnel_info_dump_ctx { int ethnl_tunnel_info_start(struct netlink_callback *cb) { + const struct genl_dumpit_info *info = genl_dumpit_info(cb); struct ethnl_tunnel_info_dump_ctx *ctx = (void *)cb->ctx; + struct nlattr **tb = info->attrs; int ret; BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); memset(ctx, 0, sizeof(*ctx)); - ret = ethnl_tunnel_info_req_parse(&ctx->req_info, cb->nlh, - sock_net(cb->skb->sk), cb->extack, - false); + ret = ethnl_parse_header_dev_get(&ctx->req_info, + tb[ETHTOOL_A_TUNNEL_INFO_HEADER], + sock_net(cb->skb->sk), cb->extack, + false); if (ctx->req_info.dev) { dev_put(ctx->req_info.dev); ctx->req_info.dev = NULL; diff --git a/net/ethtool/wol.c b/net/ethtool/wol.c index 1798421e9f1c..5bc38e2f5f61 100644 --- a/net/ethtool/wol.c +++ b/net/ethtool/wol.c @@ -17,8 +17,7 @@ struct wol_reply_data { #define WOL_REPDATA(__reply_base) \ container_of(__reply_base, struct wol_reply_data, base) -static const struct nla_policy -wol_get_policy[ETHTOOL_A_WOL_MAX + 1] = { +const struct nla_policy ethnl_wol_get_policy[ETHTOOL_A_WOL_MAX + 1] = { [ETHTOOL_A_WOL_UNSPEC] = { .type = NLA_REJECT }, [ETHTOOL_A_WOL_HEADER] = { .type = NLA_NESTED }, [ETHTOOL_A_WOL_MODES] = { .type = NLA_REJECT }, @@ -89,10 +88,8 @@ const struct ethnl_request_ops ethnl_wol_request_ops = { .request_cmd = ETHTOOL_MSG_WOL_GET, .reply_cmd = ETHTOOL_MSG_WOL_GET_REPLY, .hdr_attr = ETHTOOL_A_WOL_HEADER, - .max_attr = ETHTOOL_A_WOL_MAX, .req_info_size = sizeof(struct wol_req_info), .reply_data_size = sizeof(struct wol_reply_data), - .request_policy = wol_get_policy, .prepare_data = wol_prepare_data, .reply_size = wol_reply_size,