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* netfilter: ipset: Fix race between dump and swapRoss Lagerwall2017-09-281-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a race between ip_set_dump_start() and ip_set_swap(). The race is as follows: * Without holding the ref lock, ip_set_swap() checks ref_netlink of the set and it is 0. * ip_set_dump_start() takes a reference on the set. * ip_set_swap() does the swap (even though it now has a non-zero reference count). * ip_set_dump_start() gets the set from ip_set_list again which is now a different set since it has been swapped. * ip_set_dump_start() calls __ip_set_put_netlink() and hits a BUG_ON due to the reference count being 0. Fix this race by extending the critical region in which the ref lock is held to include checking the ref counts. The race can be reproduced with the following script: while :; do ipset destroy hash_ip1 ipset destroy hash_ip2 ipset create hash_ip1 hash:ip family inet hashsize 1024 \ maxelem 500000 ipset create hash_ip2 hash:ip family inet hashsize 300000 \ maxelem 500000 ipset create hash_ip3 hash:ip family inet hashsize 1024 \ maxelem 500000 ipset save & ipset swap hash_ip3 hash_ip2 ipset destroy hash_ip3 wait done Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* netfilter: ipset: pernet ops must be unregistered lastFlorian Westphal2017-09-261-17/+26
| | | | | | | | | | | | | | | | Removing the ipset module leaves a small window where one cpu performs module removal while another runs a command like 'ipset flush'. ipset uses net_generic(), unregistering the pernet ops frees this storage area. Fix it by first removing the user-visible api handlers and the pernet ops last. Fixes: 1785e8f473082 ("netfiler: ipset: Add net namespace for ipset") Reported-by: Li Shuang <shuali@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Replace the last reference to u_int8_t with uint8_t.Jozsef Kadlecsik2017-09-261-1/+1
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* Revert "ipset: fix build with musl"Jozsef Kadlecsik2017-09-261-2/+0
| | | | | | This reverts commit 992723e3712a09037338aa9e5506a080e24d1642. The single u_int8_t usage was a leftover.
* ipset: fix build with muslStijn Tintel2017-09-251-0/+2
| | | | | | | | | Include sys/types.h for u_int8_t and define _GNU_SOURCE for musl to expose it. Fixes: 54802b2c2826 ("Report if the option is supported by a newer kernel release") Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* ipset 6.34 releasedv6.34Jozsef Kadlecsik2017-09-233-1/+17
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* testsuite: Make sure it can be run over ssh :-)Jozsef Kadlecsik2017-09-236-32/+43
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* Reset state after a command failed, when multiple ones are issued.Jozsef Kadlecsik2017-09-231-0/+1
| | | | Fixes bugzilla id #1158 reported by Dimitri Grischin.
* Handle padding attribute properly in userspace.Jozsef Kadlecsik2017-09-232-0/+9
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* Add test file missing from patch previous patch.Jozsef Kadlecsik2017-09-231-0/+9
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* Test to check the fix to add an IPv4 range containing more than 2^31 addressesJozsef Kadlecsik2017-09-181-0/+10
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* Fix adding an IPv4 range containing more than 2^31 addressesJozsef Kadlecsik2017-09-1810-22/+24
| | | | | | | Wrong comparison prevented the hash types to add a range with more than 2^31 addresses but reported as a success. Fixes bugzilla id #1005, reported by Oleg Serditov and Oliver Ford.
* Fix the include guards on the include/libipset/linux_ip_set*.hJozsef Kadlecsik2017-09-145-14/+23
| | | | | | | The include guards did not prevent including the "same" userspace and kernel header files. Fixes bugzilla id #1139, reported and solution suggested by Quentin Armitage.
* New function added in commit 54802b2c is missing from libipset.mapJozsef Kadlecsik2017-09-141-0/+5
| | | | | | The patch title was "Report if the option is supported by a newer kernel release" Fixes bugzilla id #1182, reported by irherder@gmail.com.
* ipset 6.33 releasedv6.33Jozsef Kadlecsik2017-09-123-1/+25
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* Backport patch: sctp: remove the typedef sctp_sctphdr_tJozsef Kadlecsik2017-09-113-0/+16
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* Backport patch: netfilter: nfnetlink: extended ACK reportingJozsef Kadlecsik2017-09-113-20/+47
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* ipset: remove unused function __ip_set_get_netlinkAaron Conole2017-09-111-8/+0
| | | | | | | | There are no in-tree callers. Signed-off-by: Aaron Conole <aconole@bytheb.org> Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* Backport patch: netlink: pass extended ACK struct to parsing functionsJozsef Kadlecsik2017-09-113-19/+39
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* Backport patch netlink: extended ACK reportingJozsef Kadlecsik2017-09-113-1/+18
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* netfilter: Remove exceptional & on function nameArushi Singhal2017-09-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | Remove & from function pointers to conform to the style found elsewhere in the file. Done using the following semantic patch // <smpl> @r@ identifier f; @@ f(...) { ... } @@ identifier r.f; @@ - &f + f // </smpl> Signed-off-by: Arushi Singhal <arushisinghal19971997@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* Backport missing part of patch: netfilter: Remove unnecessary cast on void ↵Jozsef Kadlecsik2017-09-111-2/+1
| | | | pointer
* Backport nfnl_msg_type()Jozsef Kadlecsik2017-09-113-1/+19
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* Report if the option is supported by a newer kernel releaseJozsef Kadlecsik2017-09-114-7/+54
| | | | | Instead ot printing "Unknown argument: foo", if foo option is supported by a newer kernel release, report that.
* netfilter: ipset: ipset list may return wrong member count for set with timeoutVishwanath Pai2017-09-061-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | Simple testcase: $ ipset create test hash:ip timeout 5 $ ipset add test 1.2.3.4 $ ipset add test 1.2.2.2 $ sleep 5 $ ipset l Name: test Type: hash:ip Revision: 5 Header: family inet hashsize 1024 maxelem 65536 timeout 5 Size in memory: 296 References: 0 Number of entries: 2 Members: We return "Number of entries: 2" but no members are listed. That is because mtype_list runs "ip_set_timeout_expired" and does not list the expired entries, but set->elements is never upated (until mtype_gc cleans it up later). Reviewed-by: Joshua Hunt <johunt@akamai.com> Signed-off-by: Vishwanath Pai <vpai@akamai.com>
* netfilter: ipset: deduplicate prefixlen mapsAaron Conole2017-09-061-258/+137
| | | | | | | | The prefixlen maps used here are identical, and have been since introduction. It seems to make sense to use a single large map, that the preprocessor will fill appropriately. Signed-off-by: Aaron Conole <aconole@bytheb.org>
* ipset: Fix ipset command replacement in runtest.shNeutron Soutmun2017-06-041-1/+1
| | | | | | | | | | | | | Fix the ipset command replacement. For ipset="/sbin/ipset" Actual: /sbin//sbin/ipset 2>.foo.err | ... | xargs -n1 ipset Expected: /sbin/ipset 2>.foo.err | ... | xargs -n1 /sbin/ipset Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Fix sparse warningsJozsef Kadlecsik2017-03-232-2/+2
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* Correct a test: number of entries may be outdatedJozsef Kadlecsik2017-03-231-1/+1
| | | | | At listing, timed out entries are not listed but the number of entries counter is updated at garbage collection.
* netfilter: ipset: Compress return logicsimran singhal2017-03-231-4/+1
| | | | | | | | Simplify function returns by merging assignment and return into one command line. Signed-off-by: simran singhal <singhalsimran0@gmail.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* netfilter: ipset: Remove unnecessary cast on void pointersimran singhal2017-03-232-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | The following Coccinelle script was used to detect this: @r@ expression x; void* e; type T; identifier f; @@ ( *((T *)e) | ((T *)x)[...] | ((T*)x)->f | - (T*) e ) Signed-off-by: simran singhal <singhalsimran0@gmail.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Compatibility: handle changes in 4.10 kernel treeJozsef Kadlecsik2017-03-235-17/+85
| | | | | Handle changes in struct xt_action_param and the new xt_family(), xt_net() interfaces (reported by Jan Engelhardt).
* ipset 6.32 releasedv6.32Jozsef Kadlecsik2017-03-122-1/+6
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* Fix possible truncated output in ipset output buffer handlingJozsef Kadlecsik2017-03-122-36/+39
| | | | | | | | | | Omri Bahumi and Yoni Lavi discovered that due to the inproper handling of the ipset output buffer, the output may be truncated. So for example in an "ipset save" output, instead of 192.168.0.0/24, just 192.168.0.0 printed. If one use "ipset save" and then "ipset restore" to restore the sets, this may lead to wrong firewall rules at the end. The patch fixes the bug in the ipset code.
* Missing prototype added in ipset_hash_ipmac.c (debugging)Jozsef Kadlecsik2017-03-121-0/+1
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* ipset 6.31 releasedv6.31Jozsef Kadlecsik2017-02-193-1/+14
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* Update manpage about the size parameter of list:set types.Jozsef Kadlecsik2017-02-191-1/+2
| | | | The parameter is ignored since ipset version 6.24.
* netfilter: ipset: Null pointer exception in ipset list:setVishwanath Pai2017-02-161-3/+6
| | | | | | | | | | | | | | | | | | | If we use before/after to add an element to an empty list it will cause a kernel panic. $> cat crash.restore create a hash:ip create b hash:ip create test list:set timeout 5 size 4 add test b before a $> ipset -R < crash.restore Executing the above will crash the kernel. Signed-off-by: Vishwanath Pai <vpai@akamai.com> Reviewed-by: Josh Hunt <johunt@akamai.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* New test to verify that only the intended entries are deleted at hash types.Jozsef Kadlecsik2017-02-163-1/+5
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* Fix bug: sometimes valid entries in hash:* types of sets were evictedJozsef Kadlecsik2017-02-161-1/+1
| | | | | | | | Wrong index was used and therefore when shrinking a hash bucket at deleting an entry, valid entries could be evicted as well. Thanks to Eric Ewanco for the thorough bugreport. Fixes netfilter bugzilla #1119
* Correct copyright ownerJozsef Kadlecsik2016-11-102-2/+2
| | | | | | | The functions was not introduced by Sergey Popovich, he proposed only separating them into individual extension header files. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Revert patch "Correct rcu_dereference_bh_nfnl() usage"Jozsef Kadlecsik2016-11-101-6/+4
| | | | | | | The susbsystem param cannot be used to rely on subsystem mutex locking because the call is used in netlink dump context as well. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* ipset 6.30 releasedv6.30Jozsef Kadlecsik2016-10-173-1/+27
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* ipset: Drop extra comma from error messageNeutron Soutmun2016-10-171-1/+1
| | | | | | | * The "by userspace." should be concat with the error message instead. Signed-off-by: Neutron Soutmun <neo.neutron@gmail.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* ipset: Fix the incorrect dynamic/static modules listNeutron Soutmun2016-10-171-2/+2
| | | | | | | | | | * The module's name should not be partial matched. SETTYPE_MODLIST="ipset_hash_ipmac" It shoud not be matched with "ipset_hash_ip". Signed-off-by: Neutron Soutmun <neo.neutron@gmail.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* netfilter: ipset: hash: fix boolreturn.cocci warningskbuild test robot2016-10-151-4/+4
| | | | | | | | | | | | | net/netfilter/ipset/ip_set_hash_ipmac.c:70:8-9: WARNING: return of 0/1 in function 'hash_ipmac4_data_list' with return type bool net/netfilter/ipset/ip_set_hash_ipmac.c:178:8-9: WARNING: return of 0/1 in function 'hash_ipmac6_data_list' with return type bool Return statements in functions returning bool should use true/false instead of 1/0. Generated by: scripts/coccinelle/misc/boolreturn.cocci CC: Tomasz Chilinski <tomasz.chilinski@chilan.com> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Correct tests to check the number of entries tooJozsef Kadlecsik2016-10-1438-82/+82
| | | | | | | Give enough time for the entries to timeout before listing, so that we get the correct number of entries. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Fix the nla_put_net64() API changes backportJozsef Kadlecsik2016-10-141-2/+2
| | | | | | | We must call nla_put_net64() because ipset uses net order in the netlink communication. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* netfilter: ipset: Fixing unnamed union initElad Raz2016-10-132-12/+32
| | | | | | | | | | | | | | | In continue to proposed Vinson Lee's post [1], this patch fixes compilation issues founded at gcc 4.4.7. The initialization of .cidr field of unnamed unions causes compilation error in gcc 4.4.x. References Visible links [1] https://lkml.org/lkml/2015/7/5/74 Signed-off-by: Elad Raz <eladr@mellanox.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* netfilter: x_tables: Use par->net instead of computing from the passed net ↵Eric W. Biederman2016-10-132-6/+9
| | | | | | | | | | devices Backported from kernel tree. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
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