Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

18 files changed, 1003 insertions, 0 deletions

diff --git a/include/net/netns/can.h b/include/net/netns/can.h
new file mode 100644
index 000000000..ca9bd9fba
--- /dev/null
+++ b/include/net/netns/can.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * can in net namespaces
+ */
+
+#ifndef __NETNS_CAN_H__
+#define __NETNS_CAN_H__
+
+#include <linux/spinlock.h>
+
+struct can_dev_rcv_lists;
+struct s_stats;
+struct s_pstats;
+
+struct netns_can {
+#if IS_ENABLED(CONFIG_PROC_FS)
+	struct proc_dir_entry *proc_dir;
+	struct proc_dir_entry *pde_version;
+	struct proc_dir_entry *pde_stats;
+	struct proc_dir_entry *pde_reset_stats;
+	struct proc_dir_entry *pde_rcvlist_all;
+	struct proc_dir_entry *pde_rcvlist_fil;
+	struct proc_dir_entry *pde_rcvlist_inv;
+	struct proc_dir_entry *pde_rcvlist_sff;
+	struct proc_dir_entry *pde_rcvlist_eff;
+	struct proc_dir_entry *pde_rcvlist_err;
+	struct proc_dir_entry *bcmproc_dir;
+#endif
+
+	/* receive filters subscribed for 'all' CAN devices */
+	struct can_dev_rcv_lists *can_rx_alldev_list;
+	spinlock_t can_rcvlists_lock;
+	struct timer_list can_stattimer;/* timer for statistics update */
+	struct s_stats *can_stats;	/* packet statistics */
+	struct s_pstats *can_pstats;	/* receive list statistics */
+
+	/* CAN GW per-net gateway jobs */
+	struct hlist_head cgw_list;
+};
+
+#endif /* __NETNS_CAN_H__ */
diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h
new file mode 100644
index 000000000..9795d628a
--- /dev/null
+++ b/include/net/netns/conntrack.h
@@ -0,0 +1,124 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NETNS_CONNTRACK_H
+#define __NETNS_CONNTRACK_H
+
+#include <linux/list.h>
+#include <linux/list_nulls.h>
+#include <linux/atomic.h>
+#include <linux/workqueue.h>
+#include <linux/netfilter/nf_conntrack_tcp.h>
+#ifdef CONFIG_NF_CT_PROTO_DCCP
+#include <linux/netfilter/nf_conntrack_dccp.h>
+#endif
+#ifdef CONFIG_NF_CT_PROTO_SCTP
+#include <linux/netfilter/nf_conntrack_sctp.h>
+#endif
+#include <linux/seqlock.h>
+
+struct ctl_table_header;
+struct nf_conntrack_ecache;
+
+struct nf_proto_net {
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header *ctl_table_header;
+	struct ctl_table        *ctl_table;
+#endif
+	unsigned int		users;
+};
+
+struct nf_generic_net {
+	struct nf_proto_net pn;
+	unsigned int timeout;
+};
+
+struct nf_tcp_net {
+	struct nf_proto_net pn;
+	unsigned int timeouts[TCP_CONNTRACK_TIMEOUT_MAX];
+	unsigned int tcp_loose;
+	unsigned int tcp_be_liberal;
+	unsigned int tcp_max_retrans;
+};
+
+enum udp_conntrack {
+	UDP_CT_UNREPLIED,
+	UDP_CT_REPLIED,
+	UDP_CT_MAX
+};
+
+struct nf_udp_net {
+	struct nf_proto_net pn;
+	unsigned int timeouts[UDP_CT_MAX];
+};
+
+struct nf_icmp_net {
+	struct nf_proto_net pn;
+	unsigned int timeout;
+};
+
+#ifdef CONFIG_NF_CT_PROTO_DCCP
+struct nf_dccp_net {
+	struct nf_proto_net pn;
+	int dccp_loose;
+	unsigned int dccp_timeout[CT_DCCP_MAX + 1];
+};
+#endif
+
+#ifdef CONFIG_NF_CT_PROTO_SCTP
+struct nf_sctp_net {
+	struct nf_proto_net pn;
+	unsigned int timeouts[SCTP_CONNTRACK_MAX];
+};
+#endif
+
+struct nf_ip_net {
+	struct nf_generic_net   generic;
+	struct nf_tcp_net	tcp;
+	struct nf_udp_net	udp;
+	struct nf_icmp_net	icmp;
+	struct nf_icmp_net	icmpv6;
+#ifdef CONFIG_NF_CT_PROTO_DCCP
+	struct nf_dccp_net	dccp;
+#endif
+#ifdef CONFIG_NF_CT_PROTO_SCTP
+	struct nf_sctp_net	sctp;
+#endif
+};
+
+struct ct_pcpu {
+	spinlock_t		lock;
+	struct hlist_nulls_head unconfirmed;
+	struct hlist_nulls_head dying;
+};
+
+struct netns_ct {
+	atomic_t		count;
+	unsigned int		expect_count;
+#ifdef CONFIG_NF_CONNTRACK_EVENTS
+	struct delayed_work ecache_dwork;
+	bool ecache_dwork_pending;
+#endif
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header	*sysctl_header;
+	struct ctl_table_header	*acct_sysctl_header;
+	struct ctl_table_header	*tstamp_sysctl_header;
+	struct ctl_table_header	*event_sysctl_header;
+	struct ctl_table_header	*helper_sysctl_header;
+#endif
+	unsigned int		sysctl_log_invalid; /* Log invalid packets */
+	int			sysctl_events;
+	int			sysctl_acct;
+	int			sysctl_auto_assign_helper;
+	bool			auto_assign_helper_warned;
+	int			sysctl_tstamp;
+	int			sysctl_checksum;
+
+	struct ct_pcpu __percpu *pcpu_lists;
+	struct ip_conntrack_stat __percpu *stat;
+	struct nf_ct_event_notifier __rcu *nf_conntrack_event_cb;
+	struct nf_exp_event_notifier __rcu *nf_expect_event_cb;
+	struct nf_ip_net	nf_ct_proto;
+#if defined(CONFIG_NF_CONNTRACK_LABELS)
+	unsigned int		labels_used;
+#endif
+};
+#endif
diff --git a/include/net/netns/core.h b/include/net/netns/core.h
new file mode 100644
index 000000000..36c2d998a
--- /dev/null
+++ b/include/net/netns/core.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NETNS_CORE_H__
+#define __NETNS_CORE_H__
+
+struct ctl_table_header;
+struct prot_inuse;
+
+struct netns_core {
+	/* core sysctls */
+	struct ctl_table_header	*sysctl_hdr;
+
+	int	sysctl_somaxconn;
+
+#ifdef CONFIG_PROC_FS
+	int __percpu *sock_inuse;
+	struct prot_inuse __percpu *prot_inuse;
+#endif
+};
+
+#endif
diff --git a/include/net/netns/dccp.h b/include/net/netns/dccp.h
new file mode 100644
index 000000000..cdbc4f5b8
--- /dev/null
+++ b/include/net/netns/dccp.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NETNS_DCCP_H__
+#define __NETNS_DCCP_H__
+
+struct sock;
+
+struct netns_dccp {
+	struct sock *v4_ctl_sk;
+	struct sock *v6_ctl_sk;
+};
+
+#endif
diff --git a/include/net/netns/generic.h b/include/net/netns/generic.h
new file mode 100644
index 000000000..8a1ab47c3
--- /dev/null
+++ b/include/net/netns/generic.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * generic net pointers
+ */
+
+#ifndef __NET_GENERIC_H__
+#define __NET_GENERIC_H__
+
+#include <linux/bug.h>
+#include <linux/rcupdate.h>
+
+/*
+ * Generic net pointers are to be used by modules to put some private
+ * stuff on the struct net without explicit struct net modification
+ *
+ * The rules are simple:
+ * 1. set pernet_operations->id.  After register_pernet_device you
+ *    will have the id of your private pointer.
+ * 2. set pernet_operations->size to have the code allocate and free
+ *    a private structure pointed to from struct net.
+ * 3. do not change this pointer while the net is alive;
+ * 4. do not try to have any private reference on the net_generic object.
+ *
+ * After accomplishing all of the above, the private pointer can be
+ * accessed with the net_generic() call.
+ */
+
+struct net_generic {
+	union {
+		struct {
+			unsigned int len;
+			struct rcu_head rcu;
+		} s;
+
+		void *ptr[0];
+	};
+};
+
+static inline void *net_generic(const struct net *net, unsigned int id)
+{
+	struct net_generic *ng;
+	void *ptr;
+
+	rcu_read_lock();
+	ng = rcu_dereference(net->gen);
+	ptr = ng->ptr[id];
+	rcu_read_unlock();
+
+	return ptr;
+}
+#endif
diff --git a/include/net/netns/hash.h b/include/net/netns/hash.h
new file mode 100644
index 000000000..d9b665151
--- /dev/null
+++ b/include/net/netns/hash.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NET_NS_HASH_H__
+#define __NET_NS_HASH_H__
+
+#include <net/net_namespace.h>
+
+static inline u32 net_hash_mix(const struct net *net)
+{
+	return net->hash_mix;
+}
+#endif
diff --git a/include/net/netns/ieee802154_6lowpan.h b/include/net/netns/ieee802154_6lowpan.h
new file mode 100644
index 000000000..736aeac52
--- /dev/null
+++ b/include/net/netns/ieee802154_6lowpan.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ieee802154 6lowpan in net namespaces
+ */
+
+#include <net/inet_frag.h>
+
+#ifndef __NETNS_IEEE802154_6LOWPAN_H__
+#define __NETNS_IEEE802154_6LOWPAN_H__
+
+struct netns_sysctl_lowpan {
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header *frags_hdr;
+#endif
+};
+
+struct netns_ieee802154_lowpan {
+	struct netns_sysctl_lowpan sysctl;
+	struct netns_frags	frags;
+};
+
+#endif
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
new file mode 100644
index 000000000..366e2a600
--- /dev/null
+++ b/include/net/netns/ipv4.h
@@ -0,0 +1,221 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ipv4 in net namespaces
+ */
+
+#ifndef __NETNS_IPV4_H__
+#define __NETNS_IPV4_H__
+
+#include <linux/uidgid.h>
+#include <net/inet_frag.h>
+#include <linux/rcupdate.h>
+#include <linux/siphash.h>
+
+struct tcpm_hash_bucket;
+struct ctl_table_header;
+struct ipv4_devconf;
+struct fib_rules_ops;
+struct hlist_head;
+struct fib_table;
+struct sock;
+struct local_ports {
+	seqlock_t	lock;
+	int		range[2];
+	bool		warned;
+};
+
+struct ping_group_range {
+	seqlock_t	lock;
+	kgid_t		range[2];
+};
+
+struct inet_hashinfo;
+
+struct inet_timewait_death_row {
+	atomic_t		tw_count;
+
+	struct inet_hashinfo 	*hashinfo ____cacheline_aligned_in_smp;
+	int			sysctl_max_tw_buckets;
+};
+
+struct tcp_fastopen_context;
+
+struct netns_ipv4 {
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header	*forw_hdr;
+	struct ctl_table_header	*frags_hdr;
+	struct ctl_table_header	*ipv4_hdr;
+	struct ctl_table_header *route_hdr;
+	struct ctl_table_header *xfrm4_hdr;
+#endif
+	struct ipv4_devconf	*devconf_all;
+	struct ipv4_devconf	*devconf_dflt;
+	struct ip_ra_chain __rcu *ra_chain;
+	struct mutex		ra_mutex;
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+	struct fib_rules_ops	*rules_ops;
+	bool			fib_has_custom_rules;
+	unsigned int		fib_rules_require_fldissect;
+	struct fib_table __rcu	*fib_main;
+	struct fib_table __rcu	*fib_default;
+#endif
+	bool			fib_has_custom_local_routes;
+#ifdef CONFIG_IP_ROUTE_CLASSID
+	int			fib_num_tclassid_users;
+#endif
+	struct hlist_head	*fib_table_hash;
+	bool			fib_offload_disabled;
+	struct sock		*fibnl;
+
+	struct sock  * __percpu	*icmp_sk;
+	struct sock		*mc_autojoin_sk;
+
+	struct inet_peer_base	*peers;
+	struct sock  * __percpu	*tcp_sk;
+	struct netns_frags	frags;
+#ifdef CONFIG_NETFILTER
+	struct xt_table		*iptable_filter;
+	struct xt_table		*iptable_mangle;
+	struct xt_table		*iptable_raw;
+	struct xt_table		*arptable_filter;
+#ifdef CONFIG_SECURITY
+	struct xt_table		*iptable_security;
+#endif
+	struct xt_table		*nat_table;
+#endif
+
+	int sysctl_icmp_echo_ignore_all;
+	int sysctl_icmp_echo_ignore_broadcasts;
+	int sysctl_icmp_ignore_bogus_error_responses;
+	int sysctl_icmp_ratelimit;
+	int sysctl_icmp_ratemask;
+	int sysctl_icmp_errors_use_inbound_ifaddr;
+
+	struct local_ports ip_local_ports;
+
+	int sysctl_tcp_ecn;
+	int sysctl_tcp_ecn_fallback;
+
+	int sysctl_ip_default_ttl;
+	int sysctl_ip_no_pmtu_disc;
+	int sysctl_ip_fwd_use_pmtu;
+	int sysctl_ip_fwd_update_priority;
+	int sysctl_ip_nonlocal_bind;
+	/* Shall we try to damage output packets if routing dev changes? */
+	int sysctl_ip_dynaddr;
+	int sysctl_ip_early_demux;
+	int sysctl_tcp_early_demux;
+	int sysctl_udp_early_demux;
+
+	int sysctl_fwmark_reflect;
+	int sysctl_tcp_fwmark_accept;
+#ifdef CONFIG_NET_L3_MASTER_DEV
+	int sysctl_tcp_l3mdev_accept;
+#endif
+	int sysctl_tcp_mtu_probing;
+	int sysctl_tcp_base_mss;
+	int sysctl_tcp_min_snd_mss;
+	int sysctl_tcp_probe_threshold;
+	u32 sysctl_tcp_probe_interval;
+
+	int sysctl_tcp_keepalive_time;
+	int sysctl_tcp_keepalive_probes;
+	int sysctl_tcp_keepalive_intvl;
+
+	int sysctl_tcp_syn_retries;
+	int sysctl_tcp_synack_retries;
+	int sysctl_tcp_syncookies;
+	int sysctl_tcp_reordering;
+	int sysctl_tcp_retries1;
+	int sysctl_tcp_retries2;
+	int sysctl_tcp_orphan_retries;
+	int sysctl_tcp_fin_timeout;
+	unsigned int sysctl_tcp_notsent_lowat;
+	int sysctl_tcp_tw_reuse;
+	int sysctl_tcp_sack;
+	int sysctl_tcp_window_scaling;
+	int sysctl_tcp_timestamps;
+	int sysctl_tcp_early_retrans;
+	int sysctl_tcp_recovery;
+	int sysctl_tcp_thin_linear_timeouts;
+	int sysctl_tcp_slow_start_after_idle;
+	int sysctl_tcp_retrans_collapse;
+	int sysctl_tcp_stdurg;
+	int sysctl_tcp_rfc1337;
+	int sysctl_tcp_abort_on_overflow;
+	int sysctl_tcp_fack;
+	int sysctl_tcp_max_reordering;
+	int sysctl_tcp_dsack;
+	int sysctl_tcp_app_win;
+	int sysctl_tcp_adv_win_scale;
+	int sysctl_tcp_frto;
+	int sysctl_tcp_nometrics_save;
+	int sysctl_tcp_moderate_rcvbuf;
+	int sysctl_tcp_tso_win_divisor;
+	int sysctl_tcp_workaround_signed_windows;
+	int sysctl_tcp_limit_output_bytes;
+	int sysctl_tcp_challenge_ack_limit;
+	int sysctl_tcp_min_tso_segs;
+	int sysctl_tcp_min_rtt_wlen;
+	int sysctl_tcp_autocorking;
+	int sysctl_tcp_invalid_ratelimit;
+	int sysctl_tcp_pacing_ss_ratio;
+	int sysctl_tcp_pacing_ca_ratio;
+	int sysctl_tcp_wmem[3];
+	int sysctl_tcp_rmem[3];
+	int sysctl_tcp_comp_sack_nr;
+	unsigned long sysctl_tcp_comp_sack_delay_ns;
+	struct inet_timewait_death_row tcp_death_row;
+	int sysctl_max_syn_backlog;
+	int sysctl_tcp_fastopen;
+	const struct tcp_congestion_ops __rcu  *tcp_congestion_control;
+	struct tcp_fastopen_context __rcu *tcp_fastopen_ctx;
+	spinlock_t tcp_fastopen_ctx_lock;
+	unsigned int sysctl_tcp_fastopen_blackhole_timeout;
+	atomic_t tfo_active_disable_times;
+	unsigned long tfo_active_disable_stamp;
+
+	int sysctl_udp_wmem_min;
+	int sysctl_udp_rmem_min;
+
+#ifdef CONFIG_NET_L3_MASTER_DEV
+	int sysctl_udp_l3mdev_accept;
+#endif
+
+	int sysctl_igmp_max_memberships;
+	int sysctl_igmp_max_msf;
+	int sysctl_igmp_llm_reports;
+	int sysctl_igmp_qrv;
+
+	struct ping_group_range ping_group_range;
+
+	atomic_t dev_addr_genid;
+
+#ifdef CONFIG_SYSCTL
+	unsigned long *sysctl_local_reserved_ports;
+	int sysctl_ip_prot_sock;
+#endif
+
+#ifdef CONFIG_IP_MROUTE
+#ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
+	struct mr_table		*mrt;
+#else
+	struct list_head	mr_tables;
+	struct fib_rules_ops	*mr_rules_ops;
+#endif
+#endif
+#ifdef CONFIG_IP_ROUTE_MULTIPATH
+	int sysctl_fib_multipath_use_neigh;
+	int sysctl_fib_multipath_hash_policy;
+#endif
+
+	struct fib_notifier_ops	*notifier_ops;
+	unsigned int	fib_seq;	/* protected by rtnl_mutex */
+
+	struct fib_notifier_ops	*ipmr_notifier_ops;
+	unsigned int	ipmr_seq;	/* protected by rtnl_mutex */
+
+	atomic_t	rt_genid;
+	siphash_key_t	ip_id_key;
+};
+#endif
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
new file mode 100644
index 000000000..f0e396ab9
--- /dev/null
+++ b/include/net/netns/ipv6.h
@@ -0,0 +1,117 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * ipv6 in net namespaces
+ */
+
+#include <net/inet_frag.h>
+
+#ifndef __NETNS_IPV6_H__
+#define __NETNS_IPV6_H__
+#include <net/dst_ops.h>
+
+struct ctl_table_header;
+
+struct netns_sysctl_ipv6 {
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header *hdr;
+	struct ctl_table_header *route_hdr;
+	struct ctl_table_header *icmp_hdr;
+	struct ctl_table_header *frags_hdr;
+	struct ctl_table_header *xfrm6_hdr;
+#endif
+	int bindv6only;
+	int flush_delay;
+	int ip6_rt_max_size;
+	int ip6_rt_gc_min_interval;
+	int ip6_rt_gc_timeout;
+	int ip6_rt_gc_interval;
+	int ip6_rt_gc_elasticity;
+	int ip6_rt_mtu_expires;
+	int ip6_rt_min_advmss;
+	int multipath_hash_policy;
+	int flowlabel_consistency;
+	int auto_flowlabels;
+	int icmpv6_time;
+	int icmpv6_echo_ignore_all;
+	int anycast_src_echo_reply;
+	int ip_nonlocal_bind;
+	int fwmark_reflect;
+	int idgen_retries;
+	int idgen_delay;
+	int flowlabel_state_ranges;
+	int flowlabel_reflect;
+	int max_dst_opts_cnt;
+	int max_hbh_opts_cnt;
+	int max_dst_opts_len;
+	int max_hbh_opts_len;
+	int seg6_flowlabel;
+};
+
+struct netns_ipv6 {
+	struct netns_sysctl_ipv6 sysctl;
+	struct ipv6_devconf	*devconf_all;
+	struct ipv6_devconf	*devconf_dflt;
+	struct inet_peer_base	*peers;
+	struct netns_frags	frags;
+#ifdef CONFIG_NETFILTER
+	struct xt_table		*ip6table_filter;
+	struct xt_table		*ip6table_mangle;
+	struct xt_table		*ip6table_raw;
+#ifdef CONFIG_SECURITY
+	struct xt_table		*ip6table_security;
+#endif
+	struct xt_table		*ip6table_nat;
+#endif
+	struct fib6_info	*fib6_null_entry;
+	struct rt6_info		*ip6_null_entry;
+	struct rt6_statistics   *rt6_stats;
+	struct timer_list       ip6_fib_timer;
+	struct hlist_head       *fib_table_hash;
+	struct fib6_table       *fib6_main_tbl;
+	struct list_head	fib6_walkers;
+	struct dst_ops		ip6_dst_ops;
+	rwlock_t		fib6_walker_lock;
+	spinlock_t		fib6_gc_lock;
+	unsigned int		 ip6_rt_gc_expire;
+	unsigned long		 ip6_rt_last_gc;
+#ifdef CONFIG_IPV6_MULTIPLE_TABLES
+	unsigned int		fib6_rules_require_fldissect;
+	bool			fib6_has_custom_rules;
+	struct rt6_info         *ip6_prohibit_entry;
+	struct rt6_info         *ip6_blk_hole_entry;
+	struct fib6_table       *fib6_local_tbl;
+	struct fib_rules_ops    *fib6_rules_ops;
+#endif
+	struct sock		**icmp_sk;
+	struct sock             *ndisc_sk;
+	struct sock             *tcp_sk;
+	struct sock             *igmp_sk;
+	struct sock		*mc_autojoin_sk;
+#ifdef CONFIG_IPV6_MROUTE
+#ifndef CONFIG_IPV6_MROUTE_MULTIPLE_TABLES
+	struct mr_table		*mrt6;
+#else
+	struct list_head	mr6_tables;
+	struct fib_rules_ops	*mr6_rules_ops;
+#endif
+#endif
+	atomic_t		dev_addr_genid;
+	atomic_t		fib6_sernum;
+	struct seg6_pernet_data *seg6_data;
+	struct fib_notifier_ops	*notifier_ops;
+	struct fib_notifier_ops	*ip6mr_notifier_ops;
+	unsigned int ipmr_seq; /* protected by rtnl_mutex */
+	struct {
+		struct hlist_head head;
+		spinlock_t	lock;
+		u32		seq;
+	} ip6addrlbl_table;
+};
+
+#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
+struct netns_nf_frag {
+	struct netns_frags	frags;
+};
+#endif
+
+#endif
diff --git a/include/net/netns/mib.h b/include/net/netns/mib.h
new file mode 100644
index 000000000..830bdf345
--- /dev/null
+++ b/include/net/netns/mib.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NETNS_MIB_H__
+#define __NETNS_MIB_H__
+
+#include <net/snmp.h>
+
+struct netns_mib {
+	DEFINE_SNMP_STAT(struct tcp_mib, tcp_statistics);
+	DEFINE_SNMP_STAT(struct ipstats_mib, ip_statistics);
+	DEFINE_SNMP_STAT(struct linux_mib, net_statistics);
+	DEFINE_SNMP_STAT(struct udp_mib, udp_statistics);
+	DEFINE_SNMP_STAT(struct udp_mib, udplite_statistics);
+	DEFINE_SNMP_STAT(struct icmp_mib, icmp_statistics);
+	DEFINE_SNMP_STAT_ATOMIC(struct icmpmsg_mib, icmpmsg_statistics);
+
+#if IS_ENABLED(CONFIG_IPV6)
+	struct proc_dir_entry *proc_net_devsnmp6;
+	DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6);
+	DEFINE_SNMP_STAT(struct udp_mib, udplite_stats_in6);
+	DEFINE_SNMP_STAT(struct ipstats_mib, ipv6_statistics);
+	DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
+	DEFINE_SNMP_STAT_ATOMIC(struct icmpv6msg_mib, icmpv6msg_statistics);
+#endif
+#ifdef CONFIG_XFRM_STATISTICS
+	DEFINE_SNMP_STAT(struct linux_xfrm_mib, xfrm_statistics);
+#endif
+};
+
+#endif
diff --git a/include/net/netns/mpls.h b/include/net/netns/mpls.h
new file mode 100644
index 000000000..a7bdcfbb0
--- /dev/null
+++ b/include/net/netns/mpls.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * mpls in net namespaces
+ */
+
+#ifndef __NETNS_MPLS_H__
+#define __NETNS_MPLS_H__
+
+struct mpls_route;
+struct ctl_table_header;
+
+struct netns_mpls {
+	int ip_ttl_propagate;
+	int default_ttl;
+	size_t platform_labels;
+	struct mpls_route __rcu * __rcu *platform_label;
+
+	struct ctl_table_header *ctl;
+};
+
+#endif /* __NETNS_MPLS_H__ */
diff --git a/include/net/netns/netfilter.h b/include/net/netns/netfilter.h
new file mode 100644
index 000000000..ca043342c
--- /dev/null
+++ b/include/net/netns/netfilter.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NETNS_NETFILTER_H
+#define __NETNS_NETFILTER_H
+
+#include <linux/netfilter_defs.h>
+
+struct proc_dir_entry;
+struct nf_logger;
+struct nf_queue_handler;
+
+struct netns_nf {
+#if defined CONFIG_PROC_FS
+	struct proc_dir_entry *proc_netfilter;
+#endif
+	const struct nf_queue_handler __rcu *queue_handler;
+	const struct nf_logger __rcu *nf_loggers[NFPROTO_NUMPROTO];
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header *nf_log_dir_header;
+#endif
+	struct nf_hook_entries __rcu *hooks_ipv4[NF_INET_NUMHOOKS];
+	struct nf_hook_entries __rcu *hooks_ipv6[NF_INET_NUMHOOKS];
+#ifdef CONFIG_NETFILTER_FAMILY_ARP
+	struct nf_hook_entries __rcu *hooks_arp[NF_ARP_NUMHOOKS];
+#endif
+#ifdef CONFIG_NETFILTER_FAMILY_BRIDGE
+	struct nf_hook_entries __rcu *hooks_bridge[NF_INET_NUMHOOKS];
+#endif
+#if IS_ENABLED(CONFIG_DECNET)
+	struct nf_hook_entries __rcu *hooks_decnet[NF_DN_NUMHOOKS];
+#endif
+#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV4)
+	bool			defrag_ipv4;
+#endif
+#if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
+	bool			defrag_ipv6;
+#endif
+};
+#endif
diff --git a/include/net/netns/nftables.h b/include/net/netns/nftables.h
new file mode 100644
index 000000000..286fd9608
--- /dev/null
+++ b/include/net/netns/nftables.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _NETNS_NFTABLES_H_
+#define _NETNS_NFTABLES_H_
+
+#include <linux/list.h>
+
+struct netns_nftables {
+	struct list_head	tables;
+	struct list_head	commit_list;
+	struct mutex		commit_mutex;
+	unsigned int		base_seq;
+	u8			gencursor;
+	u8			validate_state;
+};
+
+#endif
diff --git a/include/net/netns/packet.h b/include/net/netns/packet.h
new file mode 100644
index 000000000..aae69bb43
--- /dev/null
+++ b/include/net/netns/packet.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Packet network namespace
+ */
+#ifndef __NETNS_PACKET_H__
+#define __NETNS_PACKET_H__
+
+#include <linux/rculist.h>
+#include <linux/mutex.h>
+
+struct netns_packet {
+	struct mutex		sklist_lock;
+	struct hlist_head	sklist;
+};
+
+#endif /* __NETNS_PACKET_H__ */
diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h
new file mode 100644
index 000000000..0db7fb3e4
--- /dev/null
+++ b/include/net/netns/sctp.h
@@ -0,0 +1,149 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NETNS_SCTP_H__
+#define __NETNS_SCTP_H__
+
+struct sock;
+struct proc_dir_entry;
+struct sctp_mib;
+struct ctl_table_header;
+
+struct netns_sctp {
+	DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics);
+
+#ifdef CONFIG_PROC_FS
+	struct proc_dir_entry *proc_net_sctp;
+#endif
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header *sysctl_header;
+#endif
+	/* This is the global socket data structure used for responding to
+	 * the Out-of-the-blue (OOTB) packets.  A control sock will be created
+	 * for this socket at the initialization time.
+	 */
+	struct sock *ctl_sock;
+
+	/* This is the global local address list.
+	 * We actively maintain this complete list of addresses on
+	 * the system by catching address add/delete events.
+	 *
+	 * It is a list of sctp_sockaddr_entry.
+	 */
+	struct list_head local_addr_list;
+	struct list_head addr_waitq;
+	struct timer_list addr_wq_timer;
+	struct list_head auto_asconf_splist;
+	/* Lock that protects both addr_waitq and auto_asconf_splist */
+	spinlock_t addr_wq_lock;
+
+	/* Lock that protects the local_addr_list writers */
+	spinlock_t local_addr_lock;
+
+	/* RFC2960 Section 14. Suggested SCTP Protocol Parameter Values
+	 *
+	 * The following protocol parameters are RECOMMENDED:
+	 *
+	 * RTO.Initial		    - 3	 seconds
+	 * RTO.Min		    - 1	 second
+	 * RTO.Max		   -  60 seconds
+	 * RTO.Alpha		    - 1/8  (3 when converted to right shifts.)
+	 * RTO.Beta		    - 1/4  (2 when converted to right shifts.)
+	 */
+	unsigned int rto_initial;
+	unsigned int rto_min;
+	unsigned int rto_max;
+
+	/* Note: rto_alpha and rto_beta are really defined as inverse
+	 * powers of two to facilitate integer operations.
+	 */
+	int rto_alpha;
+	int rto_beta;
+
+	/* Max.Burst		    - 4 */
+	int max_burst;
+
+	/* Whether Cookie Preservative is enabled(1) or not(0) */
+	int cookie_preserve_enable;
+
+	/* The namespace default hmac alg */
+	char *sctp_hmac_alg;
+
+	/* Valid.Cookie.Life	    - 60  seconds  */
+	unsigned int valid_cookie_life;
+
+	/* Delayed SACK timeout  200ms default*/
+	unsigned int sack_timeout;
+
+	/* HB.interval		    - 30 seconds  */
+	unsigned int hb_interval;
+
+	/* Association.Max.Retrans  - 10 attempts
+	 * Path.Max.Retrans	    - 5	 attempts (per destination address)
+	 * Max.Init.Retransmits	    - 8	 attempts
+	 */
+	int max_retrans_association;
+	int max_retrans_path;
+	int max_retrans_init;
+	/* Potentially-Failed.Max.Retrans sysctl value
+	 * taken from:
+	 * http://tools.ietf.org/html/draft-nishida-tsvwg-sctp-failover-05
+	 */
+	int pf_retrans;
+
+	/*
+	 * Disable Potentially-Failed feature, the feature is enabled by default
+	 * pf_enable	-  0  : disable pf
+	 *		- >0  : enable pf
+	 */
+	int pf_enable;
+
+	/*
+	 * Policy for preforming sctp/socket accounting
+	 * 0   - do socket level accounting, all assocs share sk_sndbuf
+	 * 1   - do sctp accounting, each asoc may use sk_sndbuf bytes
+	 */
+	int sndbuf_policy;
+
+	/*
+	 * Policy for preforming sctp/socket accounting
+	 * 0   - do socket level accounting, all assocs share sk_rcvbuf
+	 * 1   - do sctp accounting, each asoc may use sk_rcvbuf bytes
+	 */
+	int rcvbuf_policy;
+
+	int default_auto_asconf;
+
+	/* Flag to indicate if addip is enabled. */
+	int addip_enable;
+	int addip_noauth;
+
+	/* Flag to indicate if PR-SCTP is enabled. */
+	int prsctp_enable;
+
+	/* Flag to indicate if PR-CONFIG is enabled. */
+	int reconf_enable;
+
+	/* Flag to indicate if SCTP-AUTH is enabled */
+	int auth_enable;
+
+	/* Flag to indicate if stream interleave is enabled */
+	int intl_enable;
+
+	/*
+	 * Policy to control SCTP IPv4 address scoping
+	 * 0   - Disable IPv4 address scoping
+	 * 1   - Enable IPv4 address scoping
+	 * 2   - Selectively allow only IPv4 private addresses
+	 * 3   - Selectively allow only IPv4 link local address
+	 */
+	int scope_policy;
+
+	/* Threshold for rwnd update SACKS.  Receive buffer shifted this many
+	 * bits is an indicator of when to send and window update SACK.
+	 */
+	int rwnd_upd_shift;
+
+	/* Threshold for autoclose timeout, in seconds. */
+	unsigned long max_autoclose;
+};
+
+#endif /* __NETNS_SCTP_H__ */
diff --git a/include/net/netns/unix.h b/include/net/netns/unix.h
new file mode 100644
index 000000000..91a3d7e39
--- /dev/null
+++ b/include/net/netns/unix.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Unix network namespace
+ */
+#ifndef __NETNS_UNIX_H__
+#define __NETNS_UNIX_H__
+
+struct ctl_table_header;
+struct netns_unix {
+	int			sysctl_max_dgram_qlen;
+	struct ctl_table_header	*ctl;
+};
+
+#endif /* __NETNS_UNIX_H__ */
diff --git a/include/net/netns/x_tables.h b/include/net/netns/x_tables.h
new file mode 100644
index 000000000..9bc5a12fd
--- /dev/null
+++ b/include/net/netns/x_tables.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NETNS_X_TABLES_H
+#define __NETNS_X_TABLES_H
+
+#include <linux/list.h>
+#include <linux/netfilter_defs.h>
+
+struct ebt_table;
+
+struct netns_xt {
+	struct list_head tables[NFPROTO_NUMPROTO];
+	bool notrack_deprecated_warning;
+	bool clusterip_deprecated_warning;
+#if defined(CONFIG_BRIDGE_NF_EBTABLES) || \
+    defined(CONFIG_BRIDGE_NF_EBTABLES_MODULE)
+	struct ebt_table *broute_table;
+	struct ebt_table *frame_filter;
+	struct ebt_table *frame_nat;
+#endif
+};
+#endif
diff --git a/include/net/netns/xfrm.h b/include/net/netns/xfrm.h
new file mode 100644
index 000000000..fbfa59801
--- /dev/null
+++ b/include/net/netns/xfrm.h
@@ -0,0 +1,80 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __NETNS_XFRM_H
+#define __NETNS_XFRM_H
+
+#include <linux/list.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+#include <linux/xfrm.h>
+#include <net/dst_ops.h>
+
+struct ctl_table_header;
+
+struct xfrm_policy_hash {
+	struct hlist_head	__rcu *table;
+	unsigned int		hmask;
+	u8			dbits4;
+	u8			sbits4;
+	u8			dbits6;
+	u8			sbits6;
+};
+
+struct xfrm_policy_hthresh {
+	struct work_struct	work;
+	seqlock_t		lock;
+	u8			lbits4;
+	u8			rbits4;
+	u8			lbits6;
+	u8			rbits6;
+};
+
+struct netns_xfrm {
+	struct list_head	state_all;
+	/*
+	 * Hash table to find appropriate SA towards given target (endpoint of
+	 * tunnel or destination of transport mode) allowed by selector.
+	 *
+	 * Main use is finding SA after policy selected tunnel or transport
+	 * mode. Also, it can be used by ah/esp icmp error handler to find
+	 * offending SA.
+	 */
+	struct hlist_head	__rcu *state_bydst;
+	struct hlist_head	__rcu *state_bysrc;
+	struct hlist_head	__rcu *state_byspi;
+	unsigned int		state_hmask;
+	unsigned int		state_num;
+	struct work_struct	state_hash_work;
+
+	struct list_head	policy_all;
+	struct hlist_head	*policy_byidx;
+	unsigned int		policy_idx_hmask;
+	struct hlist_head	policy_inexact[XFRM_POLICY_MAX];
+	struct xfrm_policy_hash	policy_bydst[XFRM_POLICY_MAX];
+	unsigned int		policy_count[XFRM_POLICY_MAX * 2];
+	struct work_struct	policy_hash_work;
+	struct xfrm_policy_hthresh policy_hthresh;
+
+
+	struct sock		*nlsk;
+	struct sock		*nlsk_stash;
+
+	u32			sysctl_aevent_etime;
+	u32			sysctl_aevent_rseqth;
+	int			sysctl_larval_drop;
+	u32			sysctl_acq_expires;
+#ifdef CONFIG_SYSCTL
+	struct ctl_table_header	*sysctl_hdr;
+#endif
+
+	struct dst_ops		xfrm4_dst_ops;
+#if IS_ENABLED(CONFIG_IPV6)
+	struct dst_ops		xfrm6_dst_ops;
+#endif
+	spinlock_t		xfrm_state_lock;
+	seqcount_t		xfrm_state_hash_generation;
+
+	spinlock_t xfrm_policy_lock;
+	struct mutex xfrm_cfg_mutex;
+};
+
+#endif