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b118509076
__nf_ct_try_assign_helper() remains in place but it now requires a template to configure the helper. A toggle to disable automatic helper assignment was added by:a900689264("netfilter: nf_ct_helper: allow to disable automatic helper assignment") in 2012 to address the issues described in "Secure use of iptables and connection tracking helpers". Automatic conntrack helper assignment was disabled by:3bb398d925("netfilter: nf_ct_helper: disable automatic helper assignment") back in 2016. This patch removes the sysctl and modparam toggles, users now have to rely on explicit conntrack helper configuration via ruleset. Update tools/testing/selftests/netfilter/nft_conntrack_helper.sh to check that auto-assignment does not happen anymore. Acked-by: Aaron Conole <aconole@redhat.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
115 lines
2.2 KiB
C
115 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __NETNS_CONNTRACK_H
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#define __NETNS_CONNTRACK_H
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#include <linux/list.h>
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#include <linux/list_nulls.h>
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#include <linux/atomic.h>
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#include <linux/workqueue.h>
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#include <linux/netfilter/nf_conntrack_tcp.h>
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#ifdef CONFIG_NF_CT_PROTO_DCCP
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#include <linux/netfilter/nf_conntrack_dccp.h>
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#endif
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#ifdef CONFIG_NF_CT_PROTO_SCTP
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#include <linux/netfilter/nf_conntrack_sctp.h>
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#endif
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#include <linux/seqlock.h>
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struct ctl_table_header;
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struct nf_conntrack_ecache;
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struct nf_generic_net {
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unsigned int timeout;
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};
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struct nf_tcp_net {
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unsigned int timeouts[TCP_CONNTRACK_TIMEOUT_MAX];
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u8 tcp_loose;
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u8 tcp_be_liberal;
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u8 tcp_max_retrans;
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u8 tcp_ignore_invalid_rst;
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#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
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unsigned int offload_timeout;
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#endif
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};
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enum udp_conntrack {
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UDP_CT_UNREPLIED,
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UDP_CT_REPLIED,
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UDP_CT_MAX
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};
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struct nf_udp_net {
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unsigned int timeouts[UDP_CT_MAX];
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#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
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unsigned int offload_timeout;
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#endif
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};
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struct nf_icmp_net {
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unsigned int timeout;
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};
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#ifdef CONFIG_NF_CT_PROTO_DCCP
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struct nf_dccp_net {
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u8 dccp_loose;
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unsigned int dccp_timeout[CT_DCCP_MAX + 1];
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};
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#endif
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#ifdef CONFIG_NF_CT_PROTO_SCTP
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struct nf_sctp_net {
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unsigned int timeouts[SCTP_CONNTRACK_MAX];
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};
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#endif
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#ifdef CONFIG_NF_CT_PROTO_GRE
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enum gre_conntrack {
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GRE_CT_UNREPLIED,
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GRE_CT_REPLIED,
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GRE_CT_MAX
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};
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struct nf_gre_net {
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struct list_head keymap_list;
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unsigned int timeouts[GRE_CT_MAX];
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};
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#endif
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struct nf_ip_net {
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struct nf_generic_net generic;
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struct nf_tcp_net tcp;
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struct nf_udp_net udp;
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struct nf_icmp_net icmp;
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struct nf_icmp_net icmpv6;
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#ifdef CONFIG_NF_CT_PROTO_DCCP
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struct nf_dccp_net dccp;
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#endif
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#ifdef CONFIG_NF_CT_PROTO_SCTP
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struct nf_sctp_net sctp;
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#endif
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#ifdef CONFIG_NF_CT_PROTO_GRE
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struct nf_gre_net gre;
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#endif
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};
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struct netns_ct {
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#ifdef CONFIG_NF_CONNTRACK_EVENTS
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u8 ctnetlink_has_listener;
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bool ecache_dwork_pending;
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#endif
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u8 sysctl_log_invalid; /* Log invalid packets */
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u8 sysctl_events;
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u8 sysctl_acct;
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u8 sysctl_tstamp;
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u8 sysctl_checksum;
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struct ip_conntrack_stat __percpu *stat;
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struct nf_ct_event_notifier __rcu *nf_conntrack_event_cb;
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struct nf_ip_net nf_ct_proto;
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#if defined(CONFIG_NF_CONNTRACK_LABELS)
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unsigned int labels_used;
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#endif
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};
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#endif
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