Christian Brauner 8b8f3e666f net: Use generic ns_common::count ... Switch over network namespaces to use the newly introduced common lifetime counter. Network namespaces have an additional counter named "passive". This counter does not guarantee that the network namespace is not already de-initialized and so isn't concerned with the actual lifetime of the network namespace; only the "count" counter is. So the latter is moved into struct ns_common. Currently every namespace type has its own lifetime counter which is stored in the specific namespace struct. The lifetime counters are used identically for all namespaces types. Namespaces may of course have additional unrelated counters and these are not altered. This introduces a common lifetime counter into struct ns_common. The ns_common struct encompasses information that all namespaces share. That should include the lifetime counter since its common for all of them. It also allows us to unify the type of the counters across all namespaces. Most of them use refcount_t but one uses atomic_t and at least one uses kref. Especially the last one doesn't make much sense since it's just a wrapper around refcount_t since 2016 and actually complicates cleanup operations by having to use container_of() to cast the correct namespace struct out of struct ns_common. Having the lifetime counter for the namespaces in one place reduces maintenance cost. Not just because after switching all namespaces over we will have removed more code than we added but also because the logic is more easily understandable and we indicate to the user that the basic lifetime requirements for all namespaces are currently identical. Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> [christian.brauner@ubuntu.com: rewrite commit] Link: https://lore.kernel.org/r/159644977635.604812.1319877322927063560.stgit@localhost.localdomain Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>		2020-08-19 14:06:36 +02:00
..
bpfilter	net: Revert "net: optimize the sockptr_t for unified kernel/user address spaces"	2020-08-10 12:06:44 -07:00
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next	2020-08-05 20:13:21 -07:00
af_inet.c	net: remove compat_sock_common_{get,set}sockopt	2020-07-19 18:16:40 -07:00
ah4.c	inet: Use fallthrough;	2020-03-12 15:55:00 -07:00
arp.c	inet: Use fallthrough;	2020-03-12 15:55:00 -07:00
bpf_tcp_ca.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2020-03-30 19:52:37 -07:00
cipso_ipv4.c	net: ipv4: kerneldoc fixes	2020-07-13 17:20:39 -07:00
datagram.c	inet: stop leaking jiffies on the wire	2019-11-01 14:57:52 -07:00
devinet.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-05-31 17:48:46 -07:00
esp4_offload.c	net: Add MODULE_DESCRIPTION entries to network modules	2020-06-20 21:33:57 -07:00
esp4.c	ESP: Export esp_output_fill_trailer function	2020-02-19 13:52:32 +01:00
fib_frontend.c	ipv4: nexthop version of fib_info_nh_uses_dev	2020-05-26 16:06:07 -07:00
fib_lookup.h	net: add net available in build_state	2020-03-29 22:30:57 -07:00
fib_notifier.c	net: fib_notifier: propagate extack down to the notifier block callback	2019-10-04 11:10:56 -07:00
fib_rules.c	fib: use indirect call wrappers in the most common fib_rules_ops	2020-07-28 17:42:31 -07:00
fib_semantics.c	net: Fix the arp error in some cases	2020-06-18 20:21:51 -07:00
fib_trie.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-08-02 01:02:12 -07:00
fou.c	net: Add MODULE_DESCRIPTION entries to network modules	2020-06-20 21:33:57 -07:00
gre_demux.c	gre: fix uninit-value in __iptunnel_pull_header	2020-03-08 21:25:37 -07:00
gre_offload.c	net: gre: recompute gre csum for sctp over gre tunnels	2020-08-03 15:29:44 -07:00
icmp.c	icmp6: support rfc 4884	2020-07-24 17:12:41 -07:00
igmp.c	ip*_mc_gsfget(): lift copyout of struct group_filter into callers	2020-05-20 20:31:27 -04:00
inet_connection_sock.c	net: refactor bind_bucket fastreuse into helper	2020-08-11 15:49:08 -07:00
inet_diag.c	inet_diag: support for wider protocol numbers	2020-07-09 12:38:41 -07:00
inet_fragment.c	inet: frags: re-introduce skb coalescing for local delivery	2019-08-08 15:55:10 -07:00
inet_hashtables.c	net: initialize fastreuse on inet_inherit_port	2020-08-11 15:49:08 -07:00
inet_timewait_sock.c	net: Use generic ns_common::count	2020-08-19 14:06:36 +02:00
inetpeer.c	inetpeer: fix data-race in inet_putpeer / inet_putpeer	2019-11-07 16:15:56 -08:00
ip_forward.c	ipv4: Revert removal of rt_uses_gateway	2019-09-20 18:23:33 -07:00
ip_fragment.c	inet: frags: re-introduce skb coalescing for local delivery	2019-08-08 15:55:10 -07:00
ip_gre.c	net: add a new ndo_tunnel_ioctl method	2020-05-19 15:45:11 -07:00
ip_input.c	bpf: Add socket assign support	2020-03-30 13:45:04 -07:00
ip_options.c	net/ipv4: merge ip_options_get and ip_options_get_from_user	2020-07-24 15:41:54 -07:00
ip_output.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-07-11 00:46:00 -07:00
ip_sockglue.c	icmp: prepare rfc 4884 for ipv6	2020-07-24 17:12:41 -07:00
ip_tunnel_core.c	Revert "ipv4: tunnel: fix compilation on ARCH=um"	2020-08-12 13:26:37 -07:00
ip_tunnel.c	ip_tunnel: fix use-after-free in ip_tunnel_lookup()	2020-06-18 20:12:34 -07:00
ip_vti.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2020-07-30 14:39:31 -07:00
ipcomp.c	ipcomp: assign if_id to child tunnel from parent tunnel	2020-07-09 12:55:37 +02:00
ipconfig.c	Documentation: nfsroot.rst: Fix references to nfsroot.rst	2020-03-02 13:11:46 -07:00
ipip.c	net: ipip: implement header_ops->parse_protocol for AF_PACKET	2020-06-30 12:29:39 -07:00
ipmr_base.c	net: fib_notifier: propagate extack down to the notifier block callback	2019-10-04 11:10:56 -07:00
ipmr.c	ipmr: Copy option to correct variable	2020-07-27 11:39:55 -07:00
Kconfig	Replace HTTP links with HTTPS ones: IPv*	2020-07-06 13:23:03 -07:00
Makefile	udp_tunnel: add central NIC RX port offload infrastructure	2020-07-10 13:54:00 -07:00
metrics.c
netfilter.c
netlink.c
nexthop.c	nexthop: Fix fdb labeling for groups	2020-06-10 13:18:40 -07:00
ping.c	ipv4: fill fl4_icmp_{type,code} in ping_v4_sendmsg	2020-07-07 15:26:37 -07:00
proc.c	tcp: add SNMP counter for no. of duplicate segments reported by DSACK	2020-07-17 12:54:30 -07:00
protocol.c
raw_diag.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-12 22:34:48 -07:00
raw.c	net: pass a sockptr_t into ->setsockopt	2020-07-24 15:41:54 -07:00
route.c	ipv4: route: Ignore output interface in FIB lookup for PMTU route	2020-08-04 13:01:45 -07:00
syncookies.c	tcp: fix build fong CONFIG_MPTCP=n	2020-08-01 11:46:29 -07:00
sysctl_net_ipv4.c	tcp: correct read of TFO keys on big endian systems	2020-08-10 12:12:35 -07:00
tcp_bbr.c	tcp_bbr: improve arithmetic division in bbr_update_bw()	2020-01-21 10:45:49 +01:00
tcp_bic.c	tcp: fix stretch ACK bugs in BIC	2020-03-16 18:26:54 -07:00
tcp_bpf.c	bpf: tcp: Recv() should return 0 when the peer socket is closed	2020-06-12 15:10:12 -07:00
tcp_cdg.c
tcp_cong.c	tcp: make sure listeners don't initialize congestion-control state	2020-07-09 13:07:45 -07:00
tcp_cubic.c	tcp_cubic: fix spurious HYSTART_DELAY exit upon drop in min RTT	2020-06-25 16:08:47 -07:00
tcp_dctcp.c
tcp_dctcp.h
tcp_diag.c	inet_diag: Move the INET_DIAG_REQ_BYTECODE nlattr to cb->data	2020-02-27 18:50:19 -08:00
tcp_fastopen.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-08-13 20:03:11 -07:00
tcp_highspeed.c	Replace HTTP links with HTTPS ones: IPv*	2020-07-06 13:23:03 -07:00
tcp_htcp.c	Replace HTTP links with HTTPS ones: IPv*	2020-07-06 13:23:03 -07:00
tcp_hybla.c
tcp_illinois.c
tcp_input.c	tcp: apply a floor of 1 for RTT samples from TCP timestamps	2020-08-03 17:54:03 -07:00
tcp_ipv4.c	bpf: Refactor to provide aux info to bpf_iter_init_seq_priv_t	2020-07-25 20:16:32 -07:00
tcp_lp.c
tcp_metrics.c	net: Use generic ns_common::count	2020-08-19 14:06:36 +02:00
tcp_minisocks.c	mptcp: add new sock flag to deal with join subflows	2020-05-15 12:30:13 -07:00
tcp_nv.c
tcp_offload.c
tcp_output.c	tcp: rename request_sock cookie_ts bit to syncookie	2020-07-31 16:55:32 -07:00
tcp_rate.c
tcp_recovery.c
tcp_scalable.c	tcp: fix stretch ACK bugs in Scalable	2020-03-16 18:26:54 -07:00
tcp_timer.c	net: ipv4: kerneldoc fixes	2020-07-13 17:20:39 -07:00
tcp_ulp.c	bpf: sockmap: Only check ULP for TCP sockets	2020-03-09 22:34:58 +01:00
tcp_vegas.c
tcp_vegas.h
tcp_veno.c	Replace HTTP links with HTTPS ones: IPv*	2020-07-06 13:23:03 -07:00
tcp_westwood.c
tcp_yeah.c	tcp: fix stretch ACK bugs in Yeah	2020-03-16 18:26:55 -07:00
tcp.c	tcp: correct read of TFO keys on big endian systems	2020-08-10 12:12:35 -07:00
tunnel4.c	tunnel4: add cb_handler to struct xfrm_tunnel	2020-07-09 12:51:36 +02:00
udp_bpf.c	bpf: Add sockmap hooks for UDP sockets	2020-03-09 22:34:58 +01:00
udp_diag.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-12 22:34:48 -07:00
udp_impl.h	net: pass a sockptr_t into ->setsockopt	2020-07-24 15:41:54 -07:00
udp_offload.c	udp: initialize is_flist with 0 in udp_gro_receive	2020-03-30 10:35:03 -07:00
udp_tunnel_core.c	udp_tunnel: add central NIC RX port offload infrastructure	2020-07-10 13:54:00 -07:00
udp_tunnel_nic.c	udp_tunnel: add the ability to hard-code IANA VXLAN	2020-08-03 10:13:54 -07:00
udp_tunnel_stub.c	udp_tunnel: add central NIC RX port offload infrastructure	2020-07-10 13:54:00 -07:00
udp.c	udp, bpf: Ignore connections in reuseport group after BPF sk lookup	2020-07-31 02:00:48 +02:00
udplite.c	net/ipv4: remove compat_ip_{get,set}sockopt	2020-07-19 18:16:41 -07:00
xfrm4_input.c	xfrm: state: remove extract_input indirection from xfrm_state_afinfo	2020-05-06 09:40:08 +02:00
xfrm4_output.c	xfrm: fix unused variable warning if CONFIG_NETFILTER=n	2020-05-11 15:12:27 +02:00
xfrm4_policy.c	net: add bool confirm_neigh parameter for dst_ops.update_pmtu	2019-12-24 22:28:54 -08:00
xfrm4_protocol.c	xfrm: add route lookup to xfrm4_rcv_encap	2019-12-09 09:59:07 +01:00
xfrm4_state.c	xfrm: remove output_finish indirection from xfrm_state_afinfo	2020-05-06 09:40:08 +02:00
xfrm4_tunnel.c	xfrm: remove type and offload_type map from xfrm_state_afinfo	2019-06-06 08:34:50 +02:00