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834184b1f3a4635efbdfdae5fb437f109f6605fa
linux/net/netfilter
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Florian Westphal 834184b1f3 netfilter: defrag: only register defrag functionality if needed 
nf_defrag modules for ipv4 and ipv6 export an empty stub function.
Any module that needs the defragmentation hooks registered simply 'calls'
this empty function to create a phony module dependency -- modprobe will
then load the defrag module too.

This extends netfilter ipv4/ipv6 defragmentation modules to delay the hook
registration until the functionality is requested within a network namespace
instead of module load time for all namespaces.

Hooks are only un-registered on module unload or when a namespace that used
such defrag functionality exits.

We have to use struct net for this as the register hooks can be called
before netns initialization here from the ipv4/ipv6 conntrack module
init path.

There is no unregister functionality support, defrag will always be
active once it was requested inside a net namespace.

The reason is that defrag has impact on nft and iptables rulesets
(without defrag we might see framents).

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-12-06 21:42:00 +01:00
..
ipset
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
ipvs
Merge tag 'ipvs-for-v4.10' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs-next
2016-12-04 20:46:16 +01:00
core.c
netfilter: handle NF_REPEAT from nf_conntrack_in()
2016-11-03 11:53:00 +01:00
Kconfig
netfilter: conntrack: built-in support for UDPlite
2016-12-04 20:57:36 +01:00
Makefile
netfilter: conntrack: built-in support for UDPlite
2016-12-04 20:57:36 +01:00
nf_conntrack_acct.c
netfilter: Remove uses of seq_<foo> return values
2015-03-18 10:51:35 +01:00
nf_conntrack_amanda.c
net: Remove state argument from skb_find_text()
2015-02-22 15:59:54 -05:00
nf_conntrack_broadcast.c
…
nf_conntrack_core.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-15 10:54:36 -05:00
nf_conntrack_ecache.c
netfilter: don't rely on DYING bit to detect when destroy event was sent
2016-08-30 11:43:08 +02:00
nf_conntrack_expect.c
netfilter: nf_ct_expect: remove the redundant slash when policy name is empty
2016-08-09 10:38:46 +02:00
nf_conntrack_extend.c
netfilter: move nat hlist_head to nf_conn
2016-07-11 11:47:50 +02:00
nf_conntrack_ftp.c
netfilter: ftp: Remove the useless code
2016-09-07 10:38:00 +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: Remove explicit rcu_read_lock in nf_hook_slow
2016-09-24 21:29:53 +02:00
nf_conntrack_h323_types.c
…
nf_conntrack_helper.c
netfilter: conntrack: fix CT target for UNSPEC helpers
2016-11-08 23:53:37 +01:00
nf_conntrack_irc.c
netfilter: Add helper array register/unregister functions
2016-07-21 02:31:53 +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: connlabels: move set helper to xt_connlabel
2016-07-22 17:05:10 +02:00
nf_conntrack_netbios_ns.c
…
nf_conntrack_netlink.c
netfilter: conntrack: remove packet hotpath stats
2016-09-12 19:59:39 +02:00
nf_conntrack_pptp.c
netfilter: conntrack: get rid of conntrack timer
2016-08-30 11:43:09 +02:00
nf_conntrack_proto_dccp.c
netfilter: conntrack: built-in support for DCCP
2016-12-04 20:53:15 +01:00
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: conntrack: built-in support for SCTP
2016-12-04 20:55:37 +01:00
nf_conntrack_proto_tcp.c
netfilter: remove ip_conntrack* sysctl compat code
2016-08-13 13:27:13 +02:00
nf_conntrack_proto_udp.c
netfilter: remove ip_conntrack* sysctl compat code
2016-08-13 13:27:13 +02:00
nf_conntrack_proto_udplite.c
netfilter: conntrack: built-in support for UDPlite
2016-12-04 20:57:36 +01:00
nf_conntrack_proto.c
netfilter: conntrack: add nf_conntrack_default_on sysctl
2016-12-04 21:17:25 +01:00
nf_conntrack_sane.c
netfilter: Add helper array register/unregister functions
2016-07-21 02:31:53 +02:00
nf_conntrack_seqadj.c
netfilter: seqadj: Fix the wrong ack adjust for the RST packet without ack
2016-09-25 14:54:01 +02:00
nf_conntrack_sip.c
netfilter: nf_conntrack_sip: extend request line validation
2016-10-27 18:27:59 +02:00
nf_conntrack_snmp.c
…
nf_conntrack_standalone.c
netfilter: conntrack: add nf_conntrack_default_on sysctl
2016-12-04 21:17:25 +01:00
nf_conntrack_tftp.c
netfilter: Add helper array register/unregister functions
2016-07-21 02:31:53 +02:00
nf_conntrack_timeout.c
netfilter: cttimeout: add netns support
2015-12-14 12:48:58 +01:00
nf_conntrack_timestamp.c
netfilter: nf_ct_timestamp: Fix BUG_ON after netns deletion
2013-12-20 14:58:29 +01:00
nf_dup_netdev.c
netfilter: nf_tables: use hook state from xt_action_param structure
2016-11-03 11:52:34 +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: fix namespace handling in nf_log_proc_dostring
2016-10-04 08:41:06 +02:00
nf_nat_amanda.c
…
nf_nat_core.c
netfilter: built-in NAT support for UDPlite
2016-12-04 20:45:32 +01:00
nf_nat_ftp.c
…
nf_nat_helper.c
netfilter: nf_conntrack: make sequence number adjustments usuable without NAT
2013-08-28 00:26:48 +02:00
nf_nat_irc.c
netfilter: nf_nat: fix access to uninitialized buffer in IRC NAT helper
2014-01-06 14:17:17 +01:00
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: built-in NAT support for SCTP
2016-12-04 20:45:31 +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
net: Change pseudohdr argument of inet_proto_csum_replace* to be a bool
2015-08-17 21:33:06 -07:00
nf_nat_proto_udplite.c
netfilter: built-in NAT support for UDPlite
2016-12-04 20:45:32 +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: merge nf_iterate() into nf_hook_slow()
2016-11-03 11:52:59 +01:00
nf_sockopt.c
netfilter: don't use mutex_lock_interruptible()
2014-08-08 16:47:23 +02:00
nf_synproxy_core.c
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
nf_tables_api.c
netfilter: nf_tables: fix inconsistent element expiration calculation
2016-11-24 14:43:34 +01:00
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: Add the missed return value check of nft_register_chain_type
2016-09-12 19:54:45 +02:00
nf_tables_trace.c
netfilter: nf_tables: use hook state from xt_action_param structure
2016-11-03 11:52:34 +01:00
nfnetlink_acct.c
netfilter: nfnetlink: use list_for_each_entry_safe to delete all objects
2016-08-25 13:11:00 +02:00
nfnetlink_cthelper.c
netfilter: Remove explicit rcu_read_lock in nf_hook_slow
2016-09-24 21:29:53 +02:00
nfnetlink_cttimeout.c
netfilter: cttimeout: unlink timeout objs in the unconfirmed ct lists
2016-08-25 13:11:30 +02:00
nfnetlink_log.c
netfilter: nfnetlink_log: add "nf-logger-5-1" module alias name
2016-12-04 20:45:34 +01:00
nfnetlink_queue.c
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
nfnetlink.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-02-23 00:09:14 -05:00
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: nft_compat: fix crash when related match/target module is removed
2016-07-23 12:25:00 +02:00
nft_counter.c
libnl: nla_put_be64(): align on a 64-bit area
2016-04-23 20:13:24 -04:00
nft_ct.c
netfilter: add and use nf_ct_netns_get/put
2016-12-04 21:16:50 +01:00
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
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-15 10:54:36 -05:00
nft_exthdr.c
netfilter: nft_exthdr: fix error handling in nft_exthdr_init()
2016-10-17 17:43:54 +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: nf_tables: use hook state from xt_action_param structure
2016-11-03 11:52:34 +01:00
nft_fwd_netdev.c
netfilter: nf_tables: add forward expression to the netdev family
2016-01-04 17:48:38 +01:00
nft_hash.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-12-03 12:29:53 -05:00
nft_immediate.c
netfilter: nf_tables: simplify the basic expressions' init routine
2016-11-09 23:42:23 +01:00
nft_limit.c
netfilter: nft_limit: fix divided by zero panic
2016-10-04 08:59:03 +02:00
nft_log.c
netfilter: nf_tables: use hook state from xt_action_param structure
2016-11-03 11:52:34 +01:00
nft_lookup.c
netfilter: nf_tables: simplify the basic expressions' init routine
2016-11-09 23:42:23 +01:00
nft_masq.c
netfilter: nf_tables: add conntrack dependencies for nat/masq/redir expressions
2016-12-04 21:17:16 +01:00
nft_meta.c
netfilter: nf_tables: use hook state from xt_action_param structure
2016-11-03 11:52:34 +01:00
nft_nat.c
netfilter: nf_tables: add conntrack dependencies for nat/masq/redir expressions
2016-12-04 21:17:16 +01:00
nft_numgen.c
netfilter: nft_numgen: start round robin from zero
2016-10-26 16:35:16 +02:00
nft_payload.c
netfilter: nf_tables: simplify the basic expressions' init routine
2016-11-09 23:42:23 +01:00
nft_queue.c
netfilter: nf_tables: use hook state from xt_action_param structure
2016-11-03 11:52:34 +01:00
nft_quota.c
netfilter: nft_quota: introduce nft_overquota()
2016-09-07 11:02:06 +02:00
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: add conntrack dependencies for nat/masq/redir expressions
2016-12-04 21:17:16 +01:00
nft_reject_inet.c
netfilter: nf_tables: use hook state from xt_action_param structure
2016-11-03 11:52:34 +01:00
nft_reject.c
netfilter: nft_reject: restrict to INPUT/FORWARD/OUTPUT
2016-08-25 12:55:34 +02:00
nft_rt.c
netfilter: nf_tables: use hook state from xt_action_param structure
2016-11-03 11:52:34 +01:00
nft_set_hash.c
netfilter: nf_tables: fix race when create new element in dynset
2016-10-27 18:22:02 +02:00
nft_set_rbtree.c
netfilter: nf_tables: fix *leak* when expr clone fail
2016-10-27 18:20:45 +02:00
x_tables.c
netfilter: x_tables: simplify IS_ERR_OR_NULL to NULL test
2016-11-13 22:26:13 +01:00
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
net: filter: split 'struct sk_filter' into socket and bpf parts
2014-08-02 15:03:58 -07:00
xt_cgroup.c
netfilter: implement xt_cgroup cgroup2 path match
2015-12-14 20:34:55 +01:00
xt_CHECKSUM.c
…
xt_CLASSIFY.c
…
xt_cluster.c
netfilter: x_tables: move hook state into xt_action_param structure
2016-11-03 10:56:21 +01:00
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: add and use nf_ct_netns_get/put
2016-12-04 21:16:50 +01:00
xt_connlimit.c
netfilter: add and use nf_ct_netns_get/put
2016-12-04 21:16:50 +01:00
xt_connmark.c
netfilter: add and use nf_ct_netns_get/put
2016-12-04 21:16:50 +01:00
xt_CONNSECMARK.c
netfilter: add and use nf_ct_netns_get/put
2016-12-04 21:16:50 +01:00
xt_conntrack.c
netfilter: add and use nf_ct_netns_get/put
2016-12-04 21:16:50 +01:00
xt_cpu.c
…
xt_CT.c
netfilter: add and use nf_ct_netns_get/put
2016-12-04 21:16:50 +01:00
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
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
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
net: use reciprocal_scale() helper
2014-08-23 12:21:21 -07:00
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: x_tables: move hook state into xt_action_param structure
2016-11-03 10:56:21 +01:00
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
…
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: Use switch case instead of multiple condition checks
2016-10-26 16:35:15 +02:00
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
netfilter: x_tables: move hook state into xt_action_param structure
2016-11-03 10:56:21 +01:00
xt_physdev.c
netfilter: physdev: add missed blank
2016-08-12 00:42:14 +02:00
xt_pkttype.c
netfilter: x_tables: move hook state into xt_action_param structure
2016-11-03 10:56:21 +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
…
xt_rateest.c
net_sched: add 64bit rate estimators
2013-06-11 02:51:03 -07:00
xt_RATEEST.c
netfilter: Enhance the codes used to get random once
2016-09-23 09:30:36 +02:00
xt_realm.c
…
xt_recent.c
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
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: add and use nf_ct_netns_get/put
2016-12-04 21:16:50 +01:00
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
net: Remove state argument from skb_find_text()
2015-02-22 15:59:54 -05:00
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
netfilter: x_tables: move hook state into xt_action_param structure
2016-11-03 10:56:21 +01:00
xt_time.c
…
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
…