From patchwork Fri May 29 17:50:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pablo Neira Ayuso X-Patchwork-Id: 218189 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, 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 850C6C433E5 for ; Fri, 29 May 2020 17:50:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 717BE206E2 for ; Fri, 29 May 2020 17:50:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727114AbgE2Rug (ORCPT ); Fri, 29 May 2020 13:50:36 -0400 Received: from correo.us.es ([193.147.175.20]:58788 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726555AbgE2Ruf (ORCPT ); Fri, 29 May 2020 13:50:35 -0400 Received: from antivirus1-rhel7.int (unknown [192.168.2.11]) by mail.us.es (Postfix) with ESMTP id 8942081414 for ; Fri, 29 May 2020 19:50:33 +0200 (CEST) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id 7C15BDA738 for ; Fri, 29 May 2020 19:50:33 +0200 (CEST) Received: by antivirus1-rhel7.int (Postfix, from userid 99) id 70A2EDA712; Fri, 29 May 2020 19:50:33 +0200 (CEST) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id 22C81DA705; Fri, 29 May 2020 19:50:31 +0200 (CEST) Received: from 192.168.1.97 (192.168.1.97) by antivirus1-rhel7.int (F-Secure/fsigk_smtp/550/antivirus1-rhel7.int); Fri, 29 May 2020 19:50:31 +0200 (CEST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/antivirus1-rhel7.int) Received: from localhost.localdomain (unknown [90.77.255.23]) (Authenticated sender: pneira@us.es) by entrada.int (Postfix) with ESMTPA id EC07942EE38E; Fri, 29 May 2020 19:50:30 +0200 (CEST) X-SMTPAUTHUS: auth mail.us.es From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org Subject: [PATCH 2/9] netfilter: nf_tables: generalise flowtable hook parsing Date: Fri, 29 May 2020 19:50:19 +0200 Message-Id: <20200529175026.30541-3-pablo@netfilter.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200529175026.30541-1-pablo@netfilter.org> References: <20200529175026.30541-1-pablo@netfilter.org> MIME-Version: 1.0 X-Virus-Scanned: ClamAV using ClamSMTP Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Update nft_flowtable_parse_hook() to take the flowtable hook list as parameter. This allows to reuse this function to update the hooks. Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_tables_api.c | 36 ++++++++++++++++++++++++----------- 1 file changed, 25 insertions(+), 11 deletions(-) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 3558e76e2733..87945b4a6789 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -6178,21 +6178,30 @@ nft_flowtable_lookup_byhandle(const struct nft_table *table, return ERR_PTR(-ENOENT); } +struct nft_flowtable_hook { + u32 num; + int priority; + struct list_head list; +}; + static const struct nla_policy nft_flowtable_hook_policy[NFTA_FLOWTABLE_HOOK_MAX + 1] = { [NFTA_FLOWTABLE_HOOK_NUM] = { .type = NLA_U32 }, [NFTA_FLOWTABLE_HOOK_PRIORITY] = { .type = NLA_U32 }, [NFTA_FLOWTABLE_HOOK_DEVS] = { .type = NLA_NESTED }, }; -static int nf_tables_flowtable_parse_hook(const struct nft_ctx *ctx, - const struct nlattr *attr, - struct nft_flowtable *flowtable) +static int nft_flowtable_parse_hook(const struct nft_ctx *ctx, + const struct nlattr *attr, + struct nft_flowtable_hook *flowtable_hook, + struct nf_flowtable *ft) { struct nlattr *tb[NFTA_FLOWTABLE_HOOK_MAX + 1]; struct nft_hook *hook; int hooknum, priority; int err; + INIT_LIST_HEAD(&flowtable_hook->list); + err = nla_parse_nested_deprecated(tb, NFTA_FLOWTABLE_HOOK_MAX, attr, nft_flowtable_hook_policy, NULL); if (err < 0) @@ -6211,19 +6220,19 @@ static int nf_tables_flowtable_parse_hook(const struct nft_ctx *ctx, err = nf_tables_parse_netdev_hooks(ctx->net, tb[NFTA_FLOWTABLE_HOOK_DEVS], - &flowtable->hook_list); + &flowtable_hook->list); if (err < 0) return err; - flowtable->hooknum = hooknum; - flowtable->data.priority = priority; + flowtable_hook->priority = priority; + flowtable_hook->num = hooknum; - list_for_each_entry(hook, &flowtable->hook_list, list) { + list_for_each_entry(hook, &flowtable_hook->list, list) { hook->ops.pf = NFPROTO_NETDEV; hook->ops.hooknum = hooknum; hook->ops.priority = priority; - hook->ops.priv = &flowtable->data; - hook->ops.hook = flowtable->data.type->hook; + hook->ops.priv = ft; + hook->ops.hook = ft->type->hook; } return err; @@ -6336,6 +6345,7 @@ static int nf_tables_newflowtable(struct net *net, struct sock *nlsk, struct netlink_ext_ack *extack) { const struct nfgenmsg *nfmsg = nlmsg_data(nlh); + struct nft_flowtable_hook flowtable_hook; const struct nf_flowtable_type *type; u8 genmask = nft_genmask_next(net); int family = nfmsg->nfgen_family; @@ -6409,11 +6419,15 @@ static int nf_tables_newflowtable(struct net *net, struct sock *nlsk, if (err < 0) goto err3; - err = nf_tables_flowtable_parse_hook(&ctx, nla[NFTA_FLOWTABLE_HOOK], - flowtable); + err = nft_flowtable_parse_hook(&ctx, nla[NFTA_FLOWTABLE_HOOK], + &flowtable_hook, &flowtable->data); if (err < 0) goto err4; + list_splice(&flowtable_hook.list, &flowtable->hook_list); + flowtable->data.priority = flowtable_hook.priority; + flowtable->hooknum = flowtable_hook.num; + err = nft_register_flowtable_net_hooks(ctx.net, table, flowtable); if (err < 0) { list_for_each_entry_safe(hook, next, &flowtable->hook_list, list) {