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ffe8923f10
linux/include/net/netfilter
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Florian Westphal ffe8923f10 netfilter: nft_compat: make sure xtables destructors have run 
Pablo Neira found that after recent update of xt_IDLETIMER the
iptables-nft tests sometimes show an error.

He tracked this down to the delayed cleanup used by nf_tables core:
del rule (transaction A)
add rule (transaction B)

Its possible that by time transaction B (both in same netns) runs,
the xt target destructor has not been invoked yet.

For native nft expressions this is no problem because all expressions
that have such side effects make sure these are handled from the commit
phase, rather than async cleanup.

For nft_compat however this isn't true.

Instead of forcing synchronous behaviour for nft_compat, keep track
of the number of outstanding destructor calls.

When we attempt to create a new expression, flush the cleanup worker
to make sure destructors have completed.

With lots of help from Pablo Neira.

Reported-by: Pablo Neira Ayso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2020-07-31 19:28:00 +02:00
..
ipv4 netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
ipv6 netfilter: remove nf_conntrack_icmpv6.h header. 2019-09-13 12:33:06 +02:00
br_netfilter.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_conntrack_acct.h netfilter: conntrack: add nf_ct_acct_add() 2020-03-30 02:05:39 +02:00
nf_conntrack_bridge.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_conntrack_core.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_conntrack_count.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nf_conntrack_ecache.h netfilter: conntrack: use consistent style when defining inline functions 2019-09-13 12:46:25 +02:00
nf_conntrack_expect.h netfilter: fix coding-style errors. 2019-09-13 11:39:38 +02:00
nf_conntrack_extend.h netfilter: Replace zero-length array with flexible-array member 2020-03-15 15:20:16 +01:00
nf_conntrack_helper.h treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
nf_conntrack_l4proto.h netfilter: ctnetlink: add kernel side filtering for dump 2020-05-27 22:20:34 +02:00
nf_conntrack_labels.h netfilter: fix include guards. 2019-09-13 11:39:38 +02:00
nf_conntrack_seqadj.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nf_conntrack_synproxy.h netfilter: conntrack: wrap two inline functions in config checks. 2019-09-13 12:47:10 +02:00
nf_conntrack_timeout.h netfilter: Replace zero-length array with flexible-array member 2020-03-15 15:20:16 +01:00
nf_conntrack_timestamp.h netfilter: conntrack: remove two unused functions from nf_conntrack_timestamp.h. 2019-09-13 12:48:09 +02:00
nf_conntrack_tuple.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_conntrack_zones.h netfilter: conntrack: remove CONFIG_NF_CONNTRACK checks from nf_conntrack_zones.h. 2019-09-13 12:47:41 +02:00
nf_conntrack.h netfilter: conntrack: avoid gcc-10 zero-length-bounds warning 2020-05-10 23:20:24 +02:00
nf_dup_netdev.h netfilter: nft_{fwd,dup}_netdev: add offload support 2019-09-10 22:44:29 +02:00
nf_flow_table.h netfilter: flowtable: Make nf_flow_table_offload_add/del_cb inline 2020-06-15 18:06:52 -07:00
nf_log.h netfilter: check if the socket netns is correct. 2018-06-28 22:21:32 +09:00
nf_nat_helper.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nf_nat_masquerade.h netfilter: update include directives. 2019-09-13 12:33:06 +02:00
nf_nat_redirect.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nf_nat.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_queue.h netfilter: nf_queue: place bridge physports into queue_entry struct 2020-03-29 16:28:29 +02:00
nf_reject.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nf_socket.h netfilter: Decrease code duplication regarding transparent socket option 2018-06-03 00:02:01 +02:00
nf_synproxy.h netfilter: remove CONFIG_NETFILTER checks from headers. 2019-09-13 12:47:36 +02:00
nf_tables_core.h nft_set_pipapo: Introduce AVX2-based lookup implementation 2020-03-15 15:27:45 +01:00
nf_tables_ipv4.h netfilter: nf_tables_inet: don't use multihook infrastructure anymore 2018-01-08 18:01:20 +01:00
nf_tables_ipv6.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nf_tables_offload.h netfilter: nft_meta: offload support for interface index 2019-11-13 10:41:34 +01:00
nf_tables.h netfilter: nft_compat: make sure xtables destructors have run 2020-07-31 19:28:00 +02:00
nf_tproxy.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2018-07-20 22:28:28 -07:00
nft_fib.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nft_meta.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
nft_reject.h netfilter: add missing includes to a number of header-files. 2019-08-13 12:14:39 +02:00
xt_rateest.h netfilter: make xt_rateest hash table per net 2018-03-05 23:15:44 +01:00