Florian Westphal 933bd83ed6 netfilter: batch synchronize_net calls during hook unregister ...

synchronize_net is expensive and slows down netns cleanup a lot.

We have two APIs to unregister a hook:
nf_unregister_net_hook (which calls synchronize_net())
and
nf_unregister_net_hooks (calls nf_unregister_net_hook in a loop)

Make nf_unregister_net_hook a wapper around new helper
__nf_unregister_net_hook, which unlinks the hook but does not free it.

Then, we can call that helper in nf_unregister_net_hooks and then
call synchronize_net() only once.

Andrey Konovalov reports this change improves syzkaller fuzzing speed at
least twice.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

2017-05-01 11:18:54 +02:00

..

ipset

ipset: remove unused function __ip_set_get_netlink

2017-04-15 10:24:41 +02:00

ipvs

ipvs: convert to use pernet nf_hook api

2017-04-26 09:30:21 +02:00

core.c

netfilter: batch synchronize_net calls during hook unregister

2017-05-01 11:18:54 +02:00

Kconfig

netfilter: nft_exthdr: add TCP option matching

2017-02-08 14:17:09 +01:00

Makefile

netfilter: nf_tables: add bitmap set type

2017-02-08 14:16:21 +01:00

nf_conntrack_acct.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_amanda.c

netfilter: helper: add build-time asserts for helper data size

2017-04-19 17:55:16 +02:00

nf_conntrack_broadcast.c

…

nf_conntrack_core.c

netfilter: allow early drop of assured conntracks

2017-04-19 17:55:17 +02:00

nf_conntrack_ecache.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_expect.c

netfilter: Use seq_puts()/seq_putc() where possible

2017-04-07 17:29:21 +02:00

nf_conntrack_extend.c

netfilter: conntrack: handle initial extension alloc via krealloc

2017-04-26 09:30:22 +02:00

nf_conntrack_ftp.c

netfilter: helpers: remove data_len usage for inkernel helpers

2017-04-19 17:55:17 +02:00

nf_conntrack_h323_asn1.c

netfilter: nf_conntrack_h323: fix off-by-one in DecodeQ931

2016-07-11 12:32:45 +02:00

nf_conntrack_h323_main.c

netfilter: helpers: remove data_len usage for inkernel helpers

2017-04-19 17:55:17 +02:00

nf_conntrack_h323_types.c

…

nf_conntrack_helper.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_irc.c

netfilter: helpers: remove data_len usage for inkernel helpers

2017-04-19 17:55:17 +02:00

nf_conntrack_l3proto_generic.c

netfilter: Convert print_tuple functions to return void

2014-11-05 14:10:33 -05:00

nf_conntrack_labels.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_netbios_ns.c

netfilter: helper: add build-time asserts for helper data size

2017-04-19 17:55:16 +02:00

nf_conntrack_netlink.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

nf_conntrack_pptp.c

netfilter: pptp: attach nat extension when needed

2017-04-26 09:30:22 +02:00

nf_conntrack_proto_dccp.c

netfilter: allow early drop of assured conntracks

2017-04-19 17:55:17 +02:00

nf_conntrack_proto_generic.c

netfilter: remove ip_conntrack* sysctl compat code

2016-08-13 13:27:13 +02:00

nf_conntrack_proto_gre.c

netns: make struct pernet_operations::id unsigned int

2016-11-18 10:59:15 -05:00

nf_conntrack_proto_sctp.c

netfilter: allow early drop of assured conntracks

2017-04-19 17:55:17 +02:00

nf_conntrack_proto_tcp.c

netfilter: tcp: Use TCP_MAX_WSCALE instead of literal 14

2017-04-19 17:55:17 +02:00

nf_conntrack_proto_udp.c

netfilter: conntrack: no need to pass ctinfo to error handler

2017-02-02 14:31:51 +01:00

nf_conntrack_proto.c

netfilter: nf_conntrack: remove double assignment

2017-04-14 01:54:23 +02:00

nf_conntrack_sane.c

netfilter: helpers: remove data_len usage for inkernel helpers

2017-04-19 17:55:17 +02:00

nf_conntrack_seqadj.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_sip.c

netfilter: helpers: remove data_len usage for inkernel helpers

2017-04-19 17:55:17 +02:00

nf_conntrack_snmp.c

…

nf_conntrack_standalone.c

netfilter: Use seq_puts()/seq_putc() where possible

2017-04-07 17:29:21 +02:00

nf_conntrack_tftp.c

netfilter: helpers: remove data_len usage for inkernel helpers

2017-04-19 17:55:17 +02:00

nf_conntrack_timeout.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_conntrack_timestamp.c

netfilter: conntrack: mark extension structs as const

2017-04-26 09:30:22 +02:00

nf_dup_netdev.c

netfilter: add and use nf_fwd_netdev_egress

2016-12-06 21:48:22 +01:00

nf_internals.h

netfilter: merge nf_iterate() into nf_hook_slow()

2016-11-03 11:52:59 +01:00

nf_log_common.c

netfilter: nf_log: do not assume ethernet header in netdev family

2016-12-04 20:45:33 +01:00

nf_log_netdev.c

netfilter: nf_log: do not assume ethernet header in netdev family

2016-12-04 20:45:33 +01:00

nf_log.c

netfilter: Use seq_puts()/seq_putc() where possible

2017-04-07 17:29:21 +02:00

nf_nat_amanda.c

netfilter: nat: nf_nat_mangle_{udp,tcp}_packet returns boolean

2017-04-06 22:01:38 +02:00

nf_nat_core.c

netfilter: don't attach a nat extension by default

2017-04-26 09:30:22 +02:00

nf_nat_ftp.c

…

nf_nat_helper.c

netfilter: nat: nf_nat_mangle_{udp,tcp}_packet returns boolean

2017-04-06 22:01:38 +02:00

nf_nat_irc.c

netfilter: nat: nf_nat_mangle_{udp,tcp}_packet returns boolean

2017-04-06 22:01:38 +02:00

nf_nat_proto_common.c

netfilter: use IS_ENABLED() macro

2014-06-30 11:38:03 +02:00

nf_nat_proto_dccp.c

netfilter: built-in NAT support for DCCP

2016-12-04 20:45:30 +01:00

nf_nat_proto_sctp.c

netfilter: nf_nat_sctp: fix ICMP packet to be dropped accidently

2017-03-08 18:04:06 +01:00

nf_nat_proto_tcp.c

net: Change pseudohdr argument of inet_proto_csum_replace* to be a bool

2015-08-17 21:33:06 -07:00

nf_nat_proto_udp.c

netfilter: nat: merge udp and udplite helpers

2017-01-03 14:33:25 +01:00

nf_nat_proto_unknown.c

…

nf_nat_redirect.c

netfilter: nf_nat_redirect: add missing NULL pointer check

2015-10-27 06:54:56 +01:00

nf_nat_sip.c

netfilter: replace strnicmp with strncasecmp

2014-10-14 02:18:24 +02:00

nf_nat_tftp.c

…

nf_queue.c

netfilter: introduce accessor functions for hook entries

2016-12-06 21:42:15 +01:00

nf_sockopt.c

netfilter: don't use mutex_lock_interruptible()

2014-08-08 16:47:23 +02:00

nf_synproxy_core.c

netfilter: tcp: Use TCP_MAX_WSCALE instead of literal 14

2017-04-19 17:55:17 +02:00

nf_tables_api.c

netfilter: nf_tables: remove double return statement

2017-04-14 01:54:19 +02:00

nf_tables_core.c

netfilter: nf_tables: simplify the basic expressions' init routine

2016-11-09 23:42:23 +01:00

nf_tables_inet.c

netfilter: Add the missed return value check of nft_register_chain_type

2016-09-12 19:54:45 +02:00

nf_tables_netdev.c

netfilter: nf_tables: add nft_is_base_chain() helper

2017-04-06 18:32:04 +02:00

nf_tables_trace.c

netfilter: Add nfnl_msg_type() helper function

2017-04-07 16:31:36 +02:00

nfnetlink_acct.c

netfilter: Add nfnl_msg_type() helper function

2017-04-07 16:31:36 +02:00

nfnetlink_cthelper.c

netfilter: nfnetlink_cthelper: reject too large userspace allocation requests

2017-04-19 17:55:17 +02:00

nfnetlink_cttimeout.c

netfilter: Add nfnl_msg_type() helper function

2017-04-07 16:31:36 +02:00

nfnetlink_log.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nfnetlink_queue.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nfnetlink.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nft_bitwise.c

netfilter: nf_tables: simplify the basic expressions' init routine

2016-11-09 23:42:23 +01:00

nft_byteorder.c

netfilter: nf_tables: simplify the basic expressions' init routine

2016-11-09 23:42:23 +01:00

nft_cmp.c

netfilter: nf_tables: simplify the basic expressions' init routine

2016-11-09 23:42:23 +01:00

nft_compat.c

netfilter: Add nfnl_msg_type() helper function

2017-04-07 16:31:36 +02:00

nft_counter.c

netfilter: provide nft_ctx in object init function

2017-03-13 13:42:00 +01:00

nft_ct.c

netfilter: nft_ct: allow to set ctnetlink event types of a connection

2017-04-19 17:55:16 +02:00

nft_dup_netdev.c

netfilter: nf_tables: add packet duplication to the netdev family

2016-01-03 21:04:23 +01:00

nft_dynset.c

netfilter: nf_tables: add nft_set_lookup()

2017-03-06 18:23:23 +01:00

nft_exthdr.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nft_fib_inet.c

netfilter: nf_tables: use hook state from xt_action_param structure

2016-11-03 11:52:34 +01:00

nft_fib.c

netfilter: nft_fib: Support existence check

2017-03-13 13:45:36 +01:00

nft_fwd_netdev.c

netfilter: add and use nf_fwd_netdev_egress

2016-12-06 21:48:22 +01:00

nft_hash.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nft_immediate.c

netfilter: nf_tables: simplify the basic expressions' init routine

2016-11-09 23:42:23 +01:00

nft_limit.c

netfilter: limit: use per-rule spinlock to improve the scalability

2017-03-13 19:30:31 +01:00

nft_log.c

netfilter: nft_log: restrict the log prefix length to 127

2017-01-24 21:46:29 +01:00

nft_lookup.c

netfilter: nf_tables: add nft_set_lookup()

2017-03-06 18:23:23 +01:00

nft_masq.c

netfilter: nf_tables: validate the expr explicitly after init successfully

2017-03-06 18:22:12 +01:00

nft_meta.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nft_nat.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-03-23 16:41:27 -07:00

nft_numgen.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nft_objref.c

netfilter: nf_tables: add nft_set_lookup()

2017-03-06 18:23:23 +01:00

nft_payload.c

netfilter: nft_payload: mangle ckecksum if NFT_PAYLOAD_L4CSUM_PSEUDOHDR is set

2016-12-14 23:39:11 +01:00

nft_queue.c

netfilter: Remove exceptional & on function name

2017-04-07 18:24:47 +02:00

nft_quota.c

netfilter: provide nft_ctx in object init function

2017-03-13 13:42:00 +01:00

nft_range.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-12-03 12:29:53 -05:00

nft_redir.c

netfilter: nf_tables: validate the expr explicitly after init successfully

2017-03-06 18:22:12 +01:00

nft_reject_inet.c

netfilter: nf_tables: validate the expr explicitly after init successfully

2017-03-06 18:22:12 +01:00

nft_reject.c

netfilter: nf_tables: validate the expr explicitly after init successfully

2017-03-06 18:22:12 +01:00

nft_rt.c

netfilter: nf_tables: use hook state from xt_action_param structure

2016-11-03 11:52:34 +01:00

nft_set_bitmap.c

netfilter: nft_set_bitmap: keep a list of dummy elements

2017-03-13 13:34:21 +01:00

nft_set_hash.c

netfilter: Remove unnecessary cast on void pointer

2017-04-07 17:29:17 +02:00

nft_set_rbtree.c

netfilter: nft_set_rbtree: use per-set rwlock to improve the scalability

2017-03-13 19:30:43 +01:00

x_tables.c

scripts/spelling.txt: add "aligment" pattern and fix typo instances

2017-02-27 18:43:46 -08:00

xt_addrtype.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_AUDIT.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_bpf.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_cgroup.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_CHECKSUM.c

…

xt_CLASSIFY.c

…

xt_cluster.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

xt_comment.c

…

xt_connbytes.c

netfilter: add and use nf_ct_netns_get/put

2016-12-04 21:16:50 +01:00

xt_connlabel.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

xt_connlimit.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_connmark.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

xt_CONNSECMARK.c

netfilter: add and use nf_ct_netns_get/put

2016-12-04 21:16:50 +01:00

xt_conntrack.c

netfilter: kill the fake untracked conntrack objects

2017-04-15 11:47:57 +02:00

xt_cpu.c

…

xt_CT.c

netfilter: kill the fake untracked conntrack objects

2017-04-15 11:47:57 +02:00

xt_dccp.c

…

xt_devgroup.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_dscp.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_DSCP.c

netfilter: fix various sparse warnings

2014-11-13 12:14:42 +01:00

xt_ecn.c

…

xt_esp.c

…

xt_hashlimit.c

netfilter: Remove unnecessary cast on void pointer

2017-04-07 17:29:17 +02:00

xt_helper.c

netfilter: add and use nf_ct_netns_get/put

2016-12-04 21:16:50 +01:00

xt_hl.c

…

xt_HL.c

…

xt_HMARK.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

xt_IDLETIMER.c

netfilter: IDLETIMER: fix race condition when destroy the target

2016-04-29 14:28:48 +02:00

xt_ipcomp.c

netfilter: xt_ipcomp: add "ip[6]t_ipcomp" module alias name

2016-10-17 17:38:19 +02:00

xt_iprange.c

…

xt_ipvs.c

netfilter: remove nf_ct_is_untracked

2017-04-15 11:51:33 +02:00

xt_l2tp.c

netfilter: introduce l2tp match extension

2014-01-09 21:36:39 +01:00

xt_LED.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2014-08-05 18:46:26 -07:00

xt_length.c

…

xt_limit.c

netfilter: limit: use per-rule spinlock to improve the scalability

2017-03-13 19:30:31 +01:00

xt_LOG.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_mac.c

…

xt_mark.c

netfilter: xt_MARK: Add ARP support

2015-05-14 13:00:27 +02:00

xt_multiport.c

netfilter: xt_multiport: Fix wrong unmatch result with multiple ports

2016-12-06 21:48:20 +01:00

xt_nat.c

netfilter: nat: add dependencies on conntrack module

2016-12-04 21:16:51 +01:00

xt_NETMAP.c

netfilter: nat: add dependencies on conntrack module

2016-12-04 21:16:51 +01:00

xt_nfacct.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_NFLOG.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_NFQUEUE.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_osf.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_owner.c

sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h>

2017-03-02 08:42:31 +01:00

xt_physdev.c

netfilter: physdev: add missed blank

2016-08-12 00:42:14 +02:00

xt_pkttype.c

netfilter: pkttype: unnecessary to check ipv6 multicast address

2017-01-18 20:32:43 +01:00

xt_policy.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_quota.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_rateest.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_RATEEST.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_realm.c

…

xt_recent.c

netfilter: Use seq_puts()/seq_putc() where possible

2017-04-07 17:29:21 +02:00

xt_REDIRECT.c

netfilter: nat: add dependencies on conntrack module

2016-12-04 21:16:51 +01:00

xt_repldata.h

net: netfilter: LLVMLinux: vlais-netfilter

2014-06-07 11:44:39 -07:00

xt_sctp.c

sctp: rename WORD_TRUNC/ROUND macros

2016-09-22 03:13:26 -04:00

xt_SECMARK.c

…

xt_set.c

netfilter: ipset: Improve skbinfo get/init helpers

2016-11-10 13:28:42 +01:00

xt_socket.c

netfilter: defrag: only register defrag functionality if needed

2016-12-06 21:42:00 +01:00

xt_state.c

netfilter: kill the fake untracked conntrack objects

2017-04-15 11:47:57 +02:00

xt_statistic.c

net: replace macros net_random and net_srandom with direct calls to prandom

2014-01-14 15:15:25 -08:00

xt_string.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_tcpmss.c

…

xt_TCPMSS.c

netfilter: x_tables: move hook state into xt_action_param structure

2016-11-03 10:56:21 +01:00

xt_TCPOPTSTRIP.c

net: Change pseudohdr argument of inet_proto_csum_replace* to be a bool

2015-08-17 21:33:06 -07:00

xt_tcpudp.c

netfilter: Convert FWINV<[foo]> macros and uses to NF_INVF

2016-07-03 10:55:07 +02:00

xt_TEE.c

xtables: extend matches and targets with .usersize

2017-01-09 17:24:55 +01:00

xt_time.c

ktime: Get rid of the union

2016-12-25 17:21:22 +01:00

xt_TPROXY.c

netfilter: defrag: only register defrag functionality if needed

2016-12-06 21:42:00 +01:00

xt_TRACE.c

netfilter: xt_TRACE: add explicitly nf_logger_find_get call

2016-06-23 13:26:49 +02:00

xt_u32.c

…