From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gao feng Subject: [PATCH nf-next v2 03/10] netfilter: ebt_log: add net namespace support for ebt_log Date: Mon, 25 Mar 2013 17:50:41 +0800 Message-ID: <1364205048-32632-3-git-send-email-gaofeng@cn.fujitsu.com> References: <1364205048-32632-1-git-send-email-gaofeng@cn.fujitsu.com> Cc: pablo@netfilter.org, Gao feng To: netfilter-devel@vger.kernel.org Return-path: Received: from cn.fujitsu.com ([222.73.24.84]:26027 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1755121Ab3CYJuI (ORCPT ); Mon, 25 Mar 2013 05:50:08 -0400 In-Reply-To: <1364205048-32632-1-git-send-email-gaofeng@cn.fujitsu.com> Sender: netfilter-devel-owner@vger.kernel.org List-ID: Add pernet_operations for ebt_log, in pernet_ops, we call nf_log_set/unset to set/unset nf_loggers of per net. Because the syslog ns has not been implemented, we don't want the container DDOS the host's syslog. so only enable ebt_log in init_net and wait for syslog ns. Signed-off-by: Gao feng --- net/bridge/netfilter/ebt_log.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/net/bridge/netfilter/ebt_log.c b/net/bridge/netfilter/ebt_log.c index 08e5ea5..cd465d1 100644 --- a/net/bridge/netfilter/ebt_log.c +++ b/net/bridge/netfilter/ebt_log.c @@ -78,6 +78,10 @@ ebt_log_packet(u_int8_t pf, unsigned int hooknum, const char *prefix) { unsigned int bitmask; + struct net *net = dev_net(in ? in : out); + + if (!net_eq(net, &init_net)) + return; spin_lock_bh(&ebt_log_lock); printk(KERN_SOH "%c%s IN=%s OUT=%s MAC source = %pM MAC dest = %pM proto = 0x%04x", @@ -207,6 +211,22 @@ static struct nf_logger ebt_log_logger __read_mostly = { .me = THIS_MODULE, }; +static int __net_init ebt_log_net_init(struct net *net) +{ + nf_log_set(net, NFPROTO_BRIDGE, &ebt_log_logger); + return 0; +} + +static void __net_exit ebt_log_net_fini(struct net *net) +{ + nf_log_unset(net, &ebt_log_logger); +} + +static struct pernet_operations ebt_log_net_ops = { + .init = ebt_log_net_init, + .exit = ebt_log_net_fini, +}; + static int __init ebt_log_init(void) { int ret; @@ -214,12 +234,14 @@ static int __init ebt_log_init(void) ret = xt_register_target(&ebt_log_tg_reg); if (ret < 0) return ret; + nf_log_register(NFPROTO_BRIDGE, &ebt_log_logger); - return 0; + return register_pernet_subsys(&ebt_log_net_ops); } static void __exit ebt_log_fini(void) { + unregister_pernet_subsys(&ebt_log_net_ops); nf_log_unregister(&ebt_log_logger); xt_unregister_target(&ebt_log_tg_reg); } -- 1.7.11.7