From patchwork Mon Oct 14 16:38:54 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pablo Neira Ayuso X-Patchwork-Id: 283323 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 4178C2C0356 for ; Tue, 15 Oct 2013 03:39:57 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757308Ab3JNQjy (ORCPT ); Mon, 14 Oct 2013 12:39:54 -0400 Received: from mail.us.es ([193.147.175.20]:34804 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757304Ab3JNQjZ (ORCPT ); Mon, 14 Oct 2013 12:39:25 -0400 Received: (qmail 12613 invoked from network); 14 Oct 2013 18:39:21 +0200 Received: from unknown (HELO us.es) (192.168.2.12) by us.es with SMTP; 14 Oct 2013 18:39:21 +0200 Received: (qmail 20208 invoked by uid 507); 14 Oct 2013 16:39:21 -0000 X-Qmail-Scanner-Diagnostics: from 127.0.0.1 by antivirus2 (envelope-from , uid 501) with qmail-scanner-2.10 (clamdscan: 0.98/17960. spamassassin: 3.3.2. 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Processed in 2.291925 secs); 14 Oct 2013 16:39:21 -0000 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on antivirus2 X-Spam-Level: X-Spam-Status: No, score=-99.8 required=7.5 tests=BAYES_50,RCVD_IN_PBL, RCVD_IN_RP_RNBL, RCVD_IN_SORBS_DUL, RDNS_DYNAMIC, SMTPAUTH_US, USER_IN_WHITELIST autolearn=disabled version=3.3.2 X-Spam-ASN: AS12715 95.20.0.0/16 X-Envelope-From: pablo@netfilter.org Received: from unknown (HELO antivirus2) (127.0.0.1) by us.es with SMTP; 14 Oct 2013 16:39:18 -0000 Received: from 192.168.1.13 (192.168.1.13) by antivirus2 (F-Secure/fsigk_smtp/412/antivirus2); Mon, 14 Oct 2013 18:39:18 +0200 (CEST) X-Virus-Status: clean(F-Secure/fsigk_smtp/412/antivirus2) Received: (qmail 5039 invoked from network); 14 Oct 2013 18:39:20 +0200 Received: from 184.146.20.95.dynamic.jazztel.es (HELO soleta.pb.local) (pneira@us.es@95.20.146.184) by mail.us.es with SMTP; 14 Oct 2013 18:39:20 +0200 From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Cc: davem@davemloft.net, kaber@trash.net, netdev@vger.kernel.org Subject: [PATCH 13/17] netfilter: nf_tables: complete net namespace support Date: Mon, 14 Oct 2013 18:38:54 +0200 Message-Id: <1381768738-17739-14-git-send-email-pablo@netfilter.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1381768738-17739-1-git-send-email-pablo@netfilter.org> References: <1381768738-17739-1-git-send-email-pablo@netfilter.org> Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org Register family per netnamespace to ensure that sets are only visible in its approapriate namespace. Signed-off-by: Pablo Neira Ayuso --- include/net/net_namespace.h | 4 ++ include/net/netfilter/nf_tables.h | 4 +- include/net/netns/nftables.h | 15 ++++++ net/bridge/netfilter/nf_tables_bridge.c | 32 +++++++++++- net/ipv4/netfilter/nf_tables_ipv4.c | 32 +++++++++++- net/ipv6/netfilter/nf_tables_ipv6.c | 33 +++++++++++- net/netfilter/nf_tables_api.c | 83 ++++++++++++++++++++----------- 7 files changed, 168 insertions(+), 35 deletions(-) create mode 100644 include/net/netns/nftables.h diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h index bcc4a8e..da68c9a 100644 --- a/include/net/net_namespace.h +++ b/include/net/net_namespace.h @@ -22,6 +22,7 @@ #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) #include #endif +#include #include struct user_namespace; @@ -101,6 +102,9 @@ struct net { #if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE) struct netns_ct ct; #endif +#if defined(CONFIG_NF_TABLES) || defined(CONFIG_NF_TABLES_MODULE) + struct netns_nftables nft; +#endif #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6) struct netns_nf_frag nf_frag; #endif diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index a68f45f..d3272e9 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -68,6 +68,7 @@ static inline void nft_data_debug(const struct nft_data *data) /** * struct nft_ctx - nf_tables rule/set context * + * @net: net namespace * @skb: netlink skb * @nlh: netlink message header * @afi: address family info @@ -76,6 +77,7 @@ static inline void nft_data_debug(const struct nft_data *data) * @nla: netlink attributes */ struct nft_ctx { + struct net *net; const struct sk_buff *skb; const struct nlmsghdr *nlh; const struct nft_af_info *afi; @@ -462,7 +464,7 @@ struct nft_af_info { nf_hookfn *hooks[NF_MAX_HOOKS]; }; -extern int nft_register_afinfo(struct nft_af_info *); +extern int nft_register_afinfo(struct net *, struct nft_af_info *); extern void nft_unregister_afinfo(struct nft_af_info *); struct nf_chain_type { diff --git a/include/net/netns/nftables.h b/include/net/netns/nftables.h new file mode 100644 index 0000000..a98b1c5 --- /dev/null +++ b/include/net/netns/nftables.h @@ -0,0 +1,15 @@ +#ifndef _NETNS_NFTABLES_H_ +#define _NETNS_NFTABLES_H_ + +#include + +struct nft_af_info; + +struct netns_nftables { + struct list_head af_info; + struct nft_af_info *ipv4; + struct nft_af_info *ipv6; + struct nft_af_info *bridge; +}; + +#endif diff --git a/net/bridge/netfilter/nf_tables_bridge.c b/net/bridge/netfilter/nf_tables_bridge.c index bc5c21c..e8cb016 100644 --- a/net/bridge/netfilter/nf_tables_bridge.c +++ b/net/bridge/netfilter/nf_tables_bridge.c @@ -19,14 +19,42 @@ static struct nft_af_info nft_af_bridge __read_mostly = { .owner = THIS_MODULE, }; +static int nf_tables_bridge_init_net(struct net *net) +{ + net->nft.bridge = kmalloc(sizeof(struct nft_af_info), GFP_KERNEL); + if (net->nft.bridge == NULL) + return -ENOMEM; + + memcpy(net->nft.bridge, &nft_af_bridge, sizeof(nft_af_bridge)); + + if (nft_register_afinfo(net, net->nft.bridge) < 0) + goto err; + + return 0; +err: + kfree(net->nft.bridge); + return -ENOMEM; +} + +static void nf_tables_bridge_exit_net(struct net *net) +{ + nft_unregister_afinfo(net->nft.bridge); + kfree(net->nft.bridge); +} + +static struct pernet_operations nf_tables_bridge_net_ops = { + .init = nf_tables_bridge_init_net, + .exit = nf_tables_bridge_exit_net, +}; + static int __init nf_tables_bridge_init(void) { - return nft_register_afinfo(&nft_af_bridge); + return register_pernet_subsys(&nf_tables_bridge_net_ops); } static void __exit nf_tables_bridge_exit(void) { - nft_unregister_afinfo(&nft_af_bridge); + return unregister_pernet_subsys(&nf_tables_bridge_net_ops); } module_init(nf_tables_bridge_init); diff --git a/net/ipv4/netfilter/nf_tables_ipv4.c b/net/ipv4/netfilter/nf_tables_ipv4.c index c61cffb..8f7536b 100644 --- a/net/ipv4/netfilter/nf_tables_ipv4.c +++ b/net/ipv4/netfilter/nf_tables_ipv4.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include @@ -47,6 +48,33 @@ static struct nft_af_info nft_af_ipv4 __read_mostly = { }, }; +static int nf_tables_ipv4_init_net(struct net *net) +{ + net->nft.ipv4 = kmalloc(sizeof(struct nft_af_info), GFP_KERNEL); + if (net->nft.ipv4 == NULL) + return -ENOMEM; + + memcpy(net->nft.ipv4, &nft_af_ipv4, sizeof(nft_af_ipv4)); + + if (nft_register_afinfo(net, net->nft.ipv4) < 0) + goto err; + + return 0; +err: + kfree(net->nft.ipv4); + return -ENOMEM; +} + +static void nf_tables_ipv4_exit_net(struct net *net) +{ + nft_unregister_afinfo(net->nft.ipv4); + kfree(net->nft.ipv4); +} + +static struct pernet_operations nf_tables_ipv4_net_ops = { + .init = nf_tables_ipv4_init_net, + .exit = nf_tables_ipv4_exit_net, +}; static unsigned int nft_do_chain_ipv4(const struct nf_hook_ops *ops, @@ -83,12 +111,12 @@ static struct nf_chain_type filter_ipv4 = { static int __init nf_tables_ipv4_init(void) { nft_register_chain_type(&filter_ipv4); - return nft_register_afinfo(&nft_af_ipv4); + return register_pernet_subsys(&nf_tables_ipv4_net_ops); } static void __exit nf_tables_ipv4_exit(void) { - nft_unregister_afinfo(&nft_af_ipv4); + unregister_pernet_subsys(&nf_tables_ipv4_net_ops); nft_unregister_chain_type(&filter_ipv4); } diff --git a/net/ipv6/netfilter/nf_tables_ipv6.c b/net/ipv6/netfilter/nf_tables_ipv6.c index 42f905a..d77db8a 100644 --- a/net/ipv6/netfilter/nf_tables_ipv6.c +++ b/net/ipv6/netfilter/nf_tables_ipv6.c @@ -45,6 +45,34 @@ static struct nft_af_info nft_af_ipv6 __read_mostly = { }, }; +static int nf_tables_ipv6_init_net(struct net *net) +{ + net->nft.ipv6 = kmalloc(sizeof(struct nft_af_info), GFP_KERNEL); + if (net->nft.ipv6 == NULL) + return -ENOMEM; + + memcpy(net->nft.ipv6, &nft_af_ipv6, sizeof(nft_af_ipv6)); + + if (nft_register_afinfo(net, net->nft.ipv6) < 0) + goto err; + + return 0; +err: + kfree(net->nft.ipv6); + return -ENOMEM; +} + +static void nf_tables_ipv6_exit_net(struct net *net) +{ + nft_unregister_afinfo(net->nft.ipv6); + kfree(net->nft.ipv6); +} + +static struct pernet_operations nf_tables_ipv6_net_ops = { + .init = nf_tables_ipv6_init_net, + .exit = nf_tables_ipv6_exit_net, +}; + static unsigned int nft_do_chain_ipv6(const struct nf_hook_ops *ops, struct sk_buff *skb, @@ -82,11 +110,12 @@ static struct nf_chain_type filter_ipv6 = { static int __init nf_tables_ipv6_init(void) { nft_register_chain_type(&filter_ipv6); - return nft_register_afinfo(&nft_af_ipv6); + return register_pernet_subsys(&nf_tables_ipv6_net_ops); } + static void __exit nf_tables_ipv6_exit(void) { - nft_unregister_afinfo(&nft_af_ipv6); + unregister_pernet_subsys(&nf_tables_ipv6_net_ops); nft_unregister_chain_type(&filter_ipv6); } diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index a4dd7ce..e1ee850 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -18,9 +18,9 @@ #include #include #include +#include #include -static LIST_HEAD(nf_tables_afinfo); static LIST_HEAD(nf_tables_expressions); /** @@ -31,11 +31,11 @@ static LIST_HEAD(nf_tables_expressions); * Register the address family for use with nf_tables. Returns zero on * success or a negative errno code otherwise. */ -int nft_register_afinfo(struct nft_af_info *afi) +int nft_register_afinfo(struct net *net, struct nft_af_info *afi) { INIT_LIST_HEAD(&afi->tables); nfnl_lock(NFNL_SUBSYS_NFTABLES); - list_add_tail(&afi->list, &nf_tables_afinfo); + list_add_tail(&afi->list, &net->nft.af_info); nfnl_unlock(NFNL_SUBSYS_NFTABLES); return 0; } @@ -56,22 +56,23 @@ void nft_unregister_afinfo(struct nft_af_info *afi) } EXPORT_SYMBOL_GPL(nft_unregister_afinfo); -static struct nft_af_info *nft_afinfo_lookup(int family) +static struct nft_af_info *nft_afinfo_lookup(struct net *net, int family) { struct nft_af_info *afi; - list_for_each_entry(afi, &nf_tables_afinfo, list) { + list_for_each_entry(afi, &net->nft.af_info, list) { if (afi->family == family) return afi; } return NULL; } -static struct nft_af_info *nf_tables_afinfo_lookup(int family, bool autoload) +static struct nft_af_info * +nf_tables_afinfo_lookup(struct net *net, int family, bool autoload) { struct nft_af_info *afi; - afi = nft_afinfo_lookup(family); + afi = nft_afinfo_lookup(net, family); if (afi != NULL) return afi; #ifdef CONFIG_MODULES @@ -79,7 +80,7 @@ static struct nft_af_info *nf_tables_afinfo_lookup(int family, bool autoload) nfnl_unlock(NFNL_SUBSYS_NFTABLES); request_module("nft-afinfo-%u", family); nfnl_lock(NFNL_SUBSYS_NFTABLES); - afi = nft_afinfo_lookup(family); + afi = nft_afinfo_lookup(net, family); if (afi != NULL) return ERR_PTR(-EAGAIN); } @@ -232,9 +233,10 @@ static int nf_tables_dump_tables(struct sk_buff *skb, const struct nft_af_info *afi; const struct nft_table *table; unsigned int idx = 0, s_idx = cb->args[0]; + struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; - list_for_each_entry(afi, &nf_tables_afinfo, list) { + list_for_each_entry(afi, &net->nft.af_info, list) { if (family != NFPROTO_UNSPEC && family != afi->family) continue; @@ -268,6 +270,7 @@ static int nf_tables_gettable(struct sock *nlsk, struct sk_buff *skb, const struct nft_af_info *afi; const struct nft_table *table; struct sk_buff *skb2; + struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; int err; @@ -278,7 +281,7 @@ static int nf_tables_gettable(struct sock *nlsk, struct sk_buff *skb, return netlink_dump_start(nlsk, skb, nlh, &c); } - afi = nf_tables_afinfo_lookup(family, false); + afi = nf_tables_afinfo_lookup(net, family, false); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -379,9 +382,10 @@ static int nf_tables_newtable(struct sock *nlsk, struct sk_buff *skb, const struct nlattr *name; struct nft_af_info *afi; struct nft_table *table; + struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; - afi = nf_tables_afinfo_lookup(family, true); + afi = nf_tables_afinfo_lookup(net, family, true); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -433,9 +437,10 @@ static int nf_tables_deltable(struct sock *nlsk, struct sk_buff *skb, const struct nfgenmsg *nfmsg = nlmsg_data(nlh); struct nft_af_info *afi; struct nft_table *table; + struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; - afi = nf_tables_afinfo_lookup(family, false); + afi = nf_tables_afinfo_lookup(net, family, false); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -663,9 +668,10 @@ static int nf_tables_dump_chains(struct sk_buff *skb, const struct nft_table *table; const struct nft_chain *chain; unsigned int idx = 0, s_idx = cb->args[0]; + struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; - list_for_each_entry(afi, &nf_tables_afinfo, list) { + list_for_each_entry(afi, &net->nft.af_info, list) { if (family != NFPROTO_UNSPEC && family != afi->family) continue; @@ -702,6 +708,7 @@ static int nf_tables_getchain(struct sock *nlsk, struct sk_buff *skb, const struct nft_table *table; const struct nft_chain *chain; struct sk_buff *skb2; + struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; int err; @@ -712,7 +719,7 @@ static int nf_tables_getchain(struct sock *nlsk, struct sk_buff *skb, return netlink_dump_start(nlsk, skb, nlh, &c); } - afi = nf_tables_afinfo_lookup(family, false); + afi = nf_tables_afinfo_lookup(net, family, false); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -813,6 +820,7 @@ static int nf_tables_newchain(struct sock *nlsk, struct sk_buff *skb, struct nft_chain *chain; struct nft_base_chain *basechain = NULL; struct nlattr *ha[NFTA_HOOK_MAX + 1]; + struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; u64 handle = 0; int err; @@ -820,7 +828,7 @@ static int nf_tables_newchain(struct sock *nlsk, struct sk_buff *skb, create = nlh->nlmsg_flags & NLM_F_CREATE ? true : false; - afi = nf_tables_afinfo_lookup(family, true); + afi = nf_tables_afinfo_lookup(net, family, true); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -1010,9 +1018,10 @@ static int nf_tables_delchain(struct sock *nlsk, struct sk_buff *skb, const struct nft_af_info *afi; struct nft_table *table; struct nft_chain *chain; + struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; - afi = nf_tables_afinfo_lookup(family, false); + afi = nf_tables_afinfo_lookup(net, family, false); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -1050,6 +1059,7 @@ static void nft_ctx_init(struct nft_ctx *ctx, const struct nft_chain *chain, const struct nlattr * const *nla) { + ctx->net = sock_net(skb->sk); ctx->skb = skb; ctx->nlh = nlh; ctx->afi = afi; @@ -1361,9 +1371,10 @@ static int nf_tables_dump_rules(struct sk_buff *skb, const struct nft_chain *chain; const struct nft_rule *rule; unsigned int idx = 0, s_idx = cb->args[0]; + struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; - list_for_each_entry(afi, &nf_tables_afinfo, list) { + list_for_each_entry(afi, &net->nft.af_info, list) { if (family != NFPROTO_UNSPEC && family != afi->family) continue; @@ -1402,6 +1413,7 @@ static int nf_tables_getrule(struct sock *nlsk, struct sk_buff *skb, const struct nft_chain *chain; const struct nft_rule *rule; struct sk_buff *skb2; + struct net *net = sock_net(skb->sk); int family = nfmsg->nfgen_family; int err; @@ -1412,7 +1424,7 @@ static int nf_tables_getrule(struct sock *nlsk, struct sk_buff *skb, return netlink_dump_start(nlsk, skb, nlh, &c); } - afi = nf_tables_afinfo_lookup(family, false); + afi = nf_tables_afinfo_lookup(net, family, false); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -1477,6 +1489,7 @@ static int nf_tables_newrule(struct sock *nlsk, struct sk_buff *skb, { const struct nfgenmsg *nfmsg = nlmsg_data(nlh); const struct nft_af_info *afi; + struct net *net = sock_net(skb->sk); struct nft_table *table; struct nft_chain *chain; struct nft_rule *rule, *old_rule = NULL; @@ -1490,7 +1503,7 @@ static int nf_tables_newrule(struct sock *nlsk, struct sk_buff *skb, create = nlh->nlmsg_flags & NLM_F_CREATE ? true : false; - afi = nf_tables_afinfo_lookup(nfmsg->nfgen_family, create); + afi = nf_tables_afinfo_lookup(net, nfmsg->nfgen_family, create); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -1585,12 +1598,13 @@ static int nf_tables_delrule(struct sock *nlsk, struct sk_buff *skb, { const struct nfgenmsg *nfmsg = nlmsg_data(nlh); const struct nft_af_info *afi; + struct net *net = sock_net(skb->sk); const struct nft_table *table; struct nft_chain *chain; struct nft_rule *rule, *tmp; int family = nfmsg->nfgen_family; - afi = nf_tables_afinfo_lookup(family, false); + afi = nf_tables_afinfo_lookup(net, family, false); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -1697,11 +1711,12 @@ static int nft_ctx_init_from_setattr(struct nft_ctx *ctx, const struct nlmsghdr *nlh, const struct nlattr * const nla[]) { + struct net *net = sock_net(skb->sk); const struct nfgenmsg *nfmsg = nlmsg_data(nlh); const struct nft_af_info *afi; const struct nft_table *table = NULL; - afi = nf_tables_afinfo_lookup(nfmsg->nfgen_family, false); + afi = nf_tables_afinfo_lookup(net, nfmsg->nfgen_family, false); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -1818,12 +1833,11 @@ static int nf_tables_set_notify(const struct nft_ctx *ctx, { struct sk_buff *skb; u32 portid = NETLINK_CB(ctx->skb).portid; - struct net *net = sock_net(ctx->skb->sk); bool report; int err; report = nlmsg_report(ctx->nlh); - if (!report && !nfnetlink_has_listeners(net, NFNLGRP_NFTABLES)) + if (!report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) return 0; err = -ENOBUFS; @@ -1837,11 +1851,11 @@ static int nf_tables_set_notify(const struct nft_ctx *ctx, goto err; } - err = nfnetlink_send(skb, net, portid, NFNLGRP_NFTABLES, report, + err = nfnetlink_send(skb, ctx->net, portid, NFNLGRP_NFTABLES, report, GFP_KERNEL); err: if (err < 0) - nfnetlink_set_err(net, portid, NFNLGRP_NFTABLES, err); + nfnetlink_set_err(ctx->net, portid, NFNLGRP_NFTABLES, err); return err; } @@ -1974,6 +1988,7 @@ static int nf_tables_newset(struct sock *nlsk, struct sk_buff *skb, const struct nfgenmsg *nfmsg = nlmsg_data(nlh); const struct nft_set_ops *ops; const struct nft_af_info *afi; + struct net *net = sock_net(skb->sk); struct nft_table *table; struct nft_set *set; struct nft_ctx ctx; @@ -2032,7 +2047,7 @@ static int nf_tables_newset(struct sock *nlsk, struct sk_buff *skb, create = nlh->nlmsg_flags & NLM_F_CREATE ? true : false; - afi = nf_tables_afinfo_lookup(nfmsg->nfgen_family, create); + afi = nf_tables_afinfo_lookup(net, nfmsg->nfgen_family, create); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -2219,8 +2234,9 @@ static int nft_ctx_init_from_elemattr(struct nft_ctx *ctx, const struct nfgenmsg *nfmsg = nlmsg_data(nlh); const struct nft_af_info *afi; const struct nft_table *table; + struct net *net = sock_net(skb->sk); - afi = nf_tables_afinfo_lookup(nfmsg->nfgen_family, false); + afi = nf_tables_afinfo_lookup(net, nfmsg->nfgen_family, false); if (IS_ERR(afi)) return PTR_ERR(afi); @@ -3011,6 +3027,16 @@ int nft_data_dump(struct sk_buff *skb, int attr, const struct nft_data *data, } EXPORT_SYMBOL_GPL(nft_data_dump); +static int nf_tables_init_net(struct net *net) +{ + INIT_LIST_HEAD(&net->nft.af_info); + return 0; +} + +static struct pernet_operations nf_tables_net_ops = { + .init = nf_tables_init_net, +}; + static int __init nf_tables_module_init(void) { int err; @@ -3031,7 +3057,7 @@ static int __init nf_tables_module_init(void) goto err3; pr_info("nf_tables: (c) 2007-2009 Patrick McHardy \n"); - return 0; + return register_pernet_subsys(&nf_tables_net_ops); err3: nf_tables_core_module_exit(); err2: @@ -3042,6 +3068,7 @@ err1: static void __exit nf_tables_module_exit(void) { + unregister_pernet_subsys(&nf_tables_net_ops); nfnetlink_subsys_unregister(&nf_tables_subsys); nf_tables_core_module_exit(); kfree(info);