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,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 15A7BC282CF for ; Mon, 28 Jan 2019 23:59:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E1A6B2177E for ; Mon, 28 Jan 2019 23:59:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728232AbfA1X7D (ORCPT ); Mon, 28 Jan 2019 18:59:03 -0500 Received: from mail.us.es ([193.147.175.20]:52902 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727559AbfA1X6L (ORCPT ); Mon, 28 Jan 2019 18:58:11 -0500 Received: from antivirus1-rhel7.int (unknown [192.168.2.11]) by mail.us.es (Postfix) with ESMTP id C2601F26F6 for ; Tue, 29 Jan 2019 00:58:08 +0100 (CET) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id AD333DA86A for ; Tue, 29 Jan 2019 00:58:08 +0100 (CET) Received: by antivirus1-rhel7.int (Postfix, from userid 99) id A0060DA7F4; Tue, 29 Jan 2019 00:58:08 +0100 (CET) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id 80D14DA796; Tue, 29 Jan 2019 00:58:06 +0100 (CET) Received: from 192.168.1.97 (192.168.1.97) by antivirus1-rhel7.int (F-Secure/fsigk_smtp/550/antivirus1-rhel7.int); Tue, 29 Jan 2019 00:58:06 +0100 (CET) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/antivirus1-rhel7.int) Received: from salvia.here (sys.soleta.eu [212.170.55.40]) (Authenticated sender: pneira@us.es) by entrada.int (Postfix) with ESMTPA id 508D44265A4C; Tue, 29 Jan 2019 00:58:06 +0100 (CET) X-SMTPAUTHUS: auth mail.us.es From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Cc: davem@davemloft.net, netdev@vger.kernel.org Subject: [PATCH 15/33] netfilter: conntrack: remove remaining l4proto indirect packet calls Date: Tue, 29 Jan 2019 00:57:32 +0100 Message-Id: <20190128235750.18412-16-pablo@netfilter.org> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190128235750.18412-1-pablo@netfilter.org> References: <20190128235750.18412-1-pablo@netfilter.org> X-Virus-Scanned: ClamAV using ClamSMTP Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Florian Westphal Now that all l4trackers are builtin, no need to use a mix of direct and indirect calls. This removes the last two users: gre and the generic l4 protocol tracker. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso --- include/net/netfilter/nf_conntrack_l4proto.h | 12 ++++------ net/netfilter/nf_conntrack_core.c | 26 +++++++++++++++------ net/netfilter/nf_conntrack_proto_generic.c | 35 ---------------------------- net/netfilter/nf_conntrack_proto_gre.c | 11 ++++----- 4 files changed, 29 insertions(+), 55 deletions(-) diff --git a/include/net/netfilter/nf_conntrack_l4proto.h b/include/net/netfilter/nf_conntrack_l4proto.h index fd8954429e87..dda028996559 100644 --- a/include/net/netfilter/nf_conntrack_l4proto.h +++ b/include/net/netfilter/nf_conntrack_l4proto.h @@ -27,13 +27,6 @@ struct nf_conntrack_l4proto { /* protoinfo nlattr size, closes a hole */ u16 nlattr_size; - /* Returns verdict for packet, or -1 for invalid. */ - int (*packet)(struct nf_conn *ct, - struct sk_buff *skb, - unsigned int dataoff, - enum ip_conntrack_info ctinfo, - const struct nf_hook_state *state); - /* Called when a conntrack entry is destroyed */ void (*destroy)(struct nf_conn *ct); @@ -136,6 +129,11 @@ int nf_conntrack_sctp_packet(struct nf_conn *ct, unsigned int dataoff, enum ip_conntrack_info ctinfo, const struct nf_hook_state *state); +int nf_conntrack_gre_packet(struct nf_conn *ct, + struct sk_buff *skb, + unsigned int dataoff, + enum ip_conntrack_info ctinfo, + const struct nf_hook_state *state); /* Existing built-in generic protocol */ extern const struct nf_conntrack_l4proto nf_conntrack_l4proto_generic; diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c index d56cb0fc82b6..264074f04615 100644 --- a/net/netfilter/nf_conntrack_core.c +++ b/net/netfilter/nf_conntrack_core.c @@ -1534,6 +1534,18 @@ nf_conntrack_handle_icmp(struct nf_conn *tmpl, return ret; } +static int generic_packet(struct nf_conn *ct, struct sk_buff *skb, + enum ip_conntrack_info ctinfo) +{ + const unsigned int *timeout = nf_ct_timeout_lookup(ct); + + if (!timeout) + timeout = &nf_generic_pernet(nf_ct_net(ct))->timeout; + + nf_ct_refresh_acct(ct, ctinfo, skb, *timeout); + return NF_ACCEPT; +} + /* Returns verdict for packet, or -1 for invalid. */ static int nf_conntrack_handle_packet(struct nf_conn *ct, struct sk_buff *skb, @@ -1567,10 +1579,14 @@ static int nf_conntrack_handle_packet(struct nf_conn *ct, return nf_conntrack_dccp_packet(ct, skb, dataoff, ctinfo, state); #endif +#ifdef CONFIG_NF_CT_PROTO_GRE + case IPPROTO_GRE: + return nf_conntrack_gre_packet(ct, skb, dataoff, + ctinfo, state); +#endif } - WARN_ON_ONCE(1); - return -NF_ACCEPT; + return generic_packet(ct, skb, ctinfo); } unsigned int @@ -1634,11 +1650,7 @@ nf_conntrack_in(struct sk_buff *skb, const struct nf_hook_state *state) goto out; } - if (l4proto->packet) - ret = l4proto->packet(ct, skb, dataoff, ctinfo, state); - else - ret = nf_conntrack_handle_packet(ct, skb, dataoff, ctinfo, state); - + ret = nf_conntrack_handle_packet(ct, skb, dataoff, ctinfo, state); if (ret <= 0) { /* Invalid: inverse of the return code tells * the netfilter core what to do */ diff --git a/net/netfilter/nf_conntrack_proto_generic.c b/net/netfilter/nf_conntrack_proto_generic.c index 5a5bf7cb6508..78358d192c60 100644 --- a/net/netfilter/nf_conntrack_proto_generic.c +++ b/net/netfilter/nf_conntrack_proto_generic.c @@ -15,40 +15,6 @@ static const unsigned int nf_ct_generic_timeout = 600*HZ; -static bool nf_generic_should_process(u8 proto) -{ - switch (proto) { -#ifdef CONFIG_NF_CT_PROTO_GRE_MODULE - case IPPROTO_GRE: - return false; -#endif - default: - return true; - } -} - -/* Returns verdict for packet, or -1 for invalid. */ -static int generic_packet(struct nf_conn *ct, - struct sk_buff *skb, - unsigned int dataoff, - enum ip_conntrack_info ctinfo, - const struct nf_hook_state *state) -{ - const unsigned int *timeout = nf_ct_timeout_lookup(ct); - - if (!nf_generic_should_process(nf_ct_protonum(ct))) { - pr_warn_once("conntrack: generic helper won't handle protocol %d. Please consider loading the specific helper module.\n", - nf_ct_protonum(ct)); - return -NF_ACCEPT; - } - - if (!timeout) - timeout = &nf_generic_pernet(nf_ct_net(ct))->timeout; - - nf_ct_refresh_acct(ct, ctinfo, skb, *timeout); - return NF_ACCEPT; -} - #ifdef CONFIG_NF_CONNTRACK_TIMEOUT #include @@ -139,7 +105,6 @@ static struct nf_proto_net *generic_get_net_proto(struct net *net) const struct nf_conntrack_l4proto nf_conntrack_l4proto_generic = { .l4proto = 255, - .packet = generic_packet, #ifdef CONFIG_NF_CONNTRACK_TIMEOUT .ctnl_timeout = { .nlattr_to_obj = generic_timeout_nlattr_to_obj, diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c index 0c26cfd5d29f..f6391991bcf6 100644 --- a/net/netfilter/nf_conntrack_proto_gre.c +++ b/net/netfilter/nf_conntrack_proto_gre.c @@ -213,11 +213,11 @@ static unsigned int *gre_get_timeouts(struct net *net) } /* Returns verdict for packet, and may modify conntrack */ -static int gre_packet(struct nf_conn *ct, - struct sk_buff *skb, - unsigned int dataoff, - enum ip_conntrack_info ctinfo, - const struct nf_hook_state *state) +int nf_conntrack_gre_packet(struct nf_conn *ct, + struct sk_buff *skb, + unsigned int dataoff, + enum ip_conntrack_info ctinfo, + const struct nf_hook_state *state) { if (state->pf != NFPROTO_IPV4) return -NF_ACCEPT; @@ -371,7 +371,6 @@ const struct nf_conntrack_l4proto nf_conntrack_l4proto_gre = { #ifdef CONFIG_NF_CONNTRACK_PROCFS .print_conntrack = gre_print_conntrack, #endif - .packet = gre_packet, .destroy = gre_destroy, #if IS_ENABLED(CONFIG_NF_CT_NETLINK) .tuple_to_nlattr = nf_ct_port_tuple_to_nlattr, -- 2.11.0