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* ipset: add forceadd kernel support for hash set typesJosh Hunt2014-03-042-2/+8
| | | | | | | | | | | | | | | | | | Adds a new property for hash set types, where if a set is created with the 'forceadd' option and the set becomes full the next addition to the set may succeed and evict a random entry from the set. To keep overhead low eviction is done very simply. It checks to see which bucket the new entry would be added. If the bucket's pos value is non-zero (meaning there's at least one entry in the bucket) it replaces the first entry in the bucket. If pos is zero, then it continues down the normal add process. This property is useful if you have a set for 'ban' lists where it may not matter if you release some entries from the set early. Signed-off-by: Josh Hunt <johunt@akamai.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* kernel: uapi: fix MARKMASK attr ABI breakageFlorian Westphal2014-02-141-2/+2
| | | | | | | | | | | | | | commit 2dfb973c0dcc6d2211 (add markmask for hash:ip,mark data type) inserted IPSET_ATTR_MARKMASK in-between other enum values, i.e. changing values of all further attributes. This causes 'ipset list' segfault on existing kernels since ipset no longer finds IPSET_ATTR_MEMSIZE (it has a different value on kernel side). Jozsef points out it should be moved below IPSET_ATTR_MARK which works since there is some extra reserved space after that value. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Prepare the kernel for create option flags when no extension is neededJozsef Kadlecsik2014-02-132-0/+8
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* add markmask for hash:ip,mark data typeVytas Dauksa2014-01-231-0/+2
| | | | | | | | | Introduce packet mark mask for hash:ip,mark data type. This allows to set mark bit filter for the ip set. Change-Id: Id8dd9ca7e64477c4f7b022a1d9c1a5b187f1c96e Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* add hash:ip,mark data type to ipsetVytas Dauksa2014-01-082-4/+7
| | | | | | | | | | | | | | | | Introduce packet mark support with new ip,mark hash set. This includes userspace and kernelspace code, hash:ip,mark set tests and man page updates. The intended use of ip,mark set is similar to the ip:port type, but for protocols which don't use a predictable port number. Instead of port number it matches a firewall mark determined by a layer 7 filtering program like opendpi. As well as allowing or blocking traffic it will also be used for accounting packets and bytes sent for each protocol. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* ipset: remove unused codeStephen Hemminger2014-01-071-1/+0
| | | | | | | Function never used in current upstream code. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* net ipset: use rbtree postorder iteration instead of opencodingCody P Schafer2013-11-131-1/+2
| | | | | | | | Use rbtree_postorder_for_each_entry_safe() to destroy the rbtree instead of opencoding an alternate postorder iteration that modifies the tree Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* net->user_ns is available starting from 3.8, add compatibility checkingJozsef Kadlecsik2013-10-271-0/+1
| | | | Reported by Jan Engelhardt
* Avoid clashing with configured kernel in [CONFIG_]IP_SET_MAXJozsef Kadlecsik2013-10-081-0/+8
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* Compatibility code is modified not to rely on kernel version numbersJozsef Kadlecsik2013-10-021-11/+27
| | | | | | | Instead the kernel source code is checked to verify the different compatibility issues for the supported kernel releases. This way hopefully backported features will be handled properly.
* Use netlink callback dump args onlyJozsef Kadlecsik2013-10-021-0/+10
| | | | | Instead of cb->data, use callback dump args only and introduce symbolic names instead of plain numbers at accessing the argument members.
* ipset: Add net namespace for ipsetVitaly Lavrov2013-09-281-7/+9
| | | | | | | | | | | | | | | | This patch adds netns support for ipset. Major changes were made in ip_set_core.c and ip_set.h. Global variables are moved to per net namespace. Added initialization code and the destruction of the network namespace ipset subsystem. In the prototypes of public functions ip_set_* added parameter "struct net*". The remaining corrections related to the change prototypes of public functions ip_set_*. The patch for git://git.netfilter.org/ipset.git commit 6a4ec96c0b8caac5c35474e40e319704d92ca347 Signed-off-by: Vitaly Lavrov <lve@guap.ru> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Use a common function at listing the extensions of the elementsJozsef Kadlecsik2013-09-251-0/+21
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* ipset: Support comments in the userspace library.Oliver Smith2013-09-231-0/+3
| | | | | | | | | This adds support to the userspace portion of ipset for handling ipsets with the comment extension enabled. The library revision has been raised accordingly. Signed-off-by: Oliver Smith <oliver@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* netfilter: ipset: Support comments for ipset entries in the core.Oliver Smith2013-09-233-8/+104
| | | | | | | | | | | | | This adds the core support for having comments on ipset entries. The comments are stored as standard null-terminated strings in dynamically allocated memory after being passed to the kernel. As a result of this, code has been added to the generic destroy function to iterate all extensions and call that extension's destroy task if the set has that extension activated, and if such a task is defined. Signed-off-by: Oliver Smith <oliver@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Kconfig: ipset needs NETFILTER_NETLINKJozsef Kadlecsik2013-09-171-0/+5
| | | | | NETFILTER_NETLINK is not selectable in recent kernels, check and warn if not enabled indirectly.
* Support extensions which need a per data destroy functionJozsef Kadlecsik2013-09-091-5/+17
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* Generalize extensions supportJozsef Kadlecsik2013-09-071-0/+13
| | | | | Get rid of the structure based extensions and introduce a blob for the extensions. Thus we can support more extension types easily.
* Move extension data to set structureJozsef Kadlecsik2013-09-072-11/+22
| | | | | | Default timeout and extension offsets are moved to struct set, because all set types supports all extensions and it makes possible to generalize extension support.
* Rename extension offset ids to extension idsJozsef Kadlecsik2013-09-061-8/+8
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* Prepare ipset to support multiple networks for hash typesJozsef Kadlecsik2013-09-041-0/+2
| | | | | | In order to support hash:net,net, hash:net,port,net etc. types, arrays are introduced for the book-keeping of existing cidr sizes and network numbers in a set.
* Introduce new operation to get both setname and familyJozsef Kadlecsik2013-09-041-0/+8
| | | | | | | | ip[6]tables set match and SET target need to know the family of the set in order to reject adding rules which refer to a set with a non-mathcing family. Currently such rules are silently accepted and then ignored instead of generating a clear error message to the user, which is not helpful.
* Consistent userspace testing with nomatch flagJozsef Kadlecsik2013-07-221-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The "nomatch" commandline flag should invert the matching at testing, similarly to the --return-nomatch flag of the "set" match of iptables. Until now it worked with the elements with "nomatch" flag only. From now on it works with elements without the flag too, i.e: # ipset n test hash:net # ipset a test 10.0.0.0/24 nomatch # ipset t test 10.0.0.1 10.0.0.1 is NOT in set test. # ipset t test 10.0.0.1 nomatch 10.0.0.1 is in set test. # ipset a test 192.168.0.0/24 # ipset t test 192.168.0.1 192.168.0.1 is in set test. # ipset t test 192.168.0.1 nomatch 192.168.0.1 is NOT in set test. Before the patch the results were ... # ipset t test 192.168.0.1 192.168.0.1 is in set test. # ipset t test 192.168.0.1 nomatch 192.168.0.1 is in set test.
* Backport nla_put_net64Jozsef Kadlecsik2013-05-091-0/+10
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* Use fix sized type for timeout in the extension partJozsef Kadlecsik2013-05-021-1/+1
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* Make sure kernel configured properly for sparse checkingsJozsef Kadlecsik2013-05-011-0/+6
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* Rename simple macro names to avoid namespace issues.Jozsef Kadlecsik2013-05-011-0/+3
| | | | Reported-by: David Laight <David.Laight@ACULAB.COM>
* set match: add support to match the countersJozsef Kadlecsik2013-04-093-6/+43
| | | | | | | | | | The new revision of the set match supports to match the counters and to suppress updating the counters at matching too. At the set:list types, the updating of the subcounters can be suppressed as well. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Introduce the counter extension in the coreJozsef Kadlecsik2013-04-092-4/+76
| | | | Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Unified hash type generationJozsef Kadlecsik2013-04-091-1241/+0
| | | | Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Unified bitmap type generationJozsef Kadlecsik2013-04-091-0/+6
| | | | Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Introduce extensions to elements in the coreJozsef Kadlecsik2013-04-092-87/+61
| | | | | | | Introduce extensions to elements in the core and prepare timeout as the first one. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Move often used IPv6 address masking function to header fileJozsef Kadlecsik2013-04-091-0/+9
| | | | Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Make possible to test elements marked with nomatch, from userspaceJozsef Kadlecsik2013-04-091-0/+8
| | | | Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Add a compatibility header file for easier maintenanceJozsef Kadlecsik2013-04-093-30/+83
| | | | | | | Unfortunately not everything could be moved there, there are still compatibility ifdefs in some other files. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* The uapi include split in the package itselfJozsef Kadlecsik2013-04-099-268/+292
| | | | Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* hash:*net*: nomatch flag not excluded on set resizeJozsef Kadlecsik2013-04-091-7/+23
| | | | | | | If a resize is triggered the nomatch flag is not excluded at hashing, which leads to the element missed at lookup in the resized set. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* netfilter: ipset: timeout values corrupted on set resizeJosh Hunt2013-02-211-1/+3
| | | | | | | | | | | If a resize is triggered on a set with timeouts enabled, the timeout values will get corrupted when copying them to the new set. This occured b/c the wrong timeout value is supplied to type_pf_elem_tadd(). This also adds simple debug statement similar to the one in type_pf_resize(). Signed-off-by: Josh Hunt <johunt@akamai.com> Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
* Restore the support of kernel versions between 2.6.32 and 2.6.35Jozsef Kadlecsik2012-11-052-0/+8
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* Rewrite cidr book keeping to handle /0Jozsef Kadlecsik2012-09-221-49/+55
| | | | The patch is required for the /0 support in hash:net,iface
* Revert patch "Fix cidr book keeping for hash:*net* types"Jozsef Kadlecsik2012-09-221-55/+49
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* Support to match elements marked with "nomatch" in hash:*net* setsJozsef Kadlecsik2012-09-211-0/+4
| | | | | | | | | | | | | | | Exceptions can now be matched and we can branch according to the possible cases: a. match in the set if the element is not flagged as "nomatch" b. match in the set if the element is flagged with "nomatch" c. no match i.e. iptables ... -m set --match-set ... -j ... iptables ... -m set --match-set ... --nomatch-entries -j ... ...
* Coding style fixesJozsef Kadlecsik2012-09-112-3/+4
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* Include supported revisions in module descriptionJozsef Kadlecsik2012-09-111-0/+6
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* Fix cidr book keeping for hash:*net* typesJozsef Kadlecsik2012-09-101-49/+55
| | | | | | | The book-keeping of the different sized networks were bogus, fix it. The broken code could lead invalid matching in such sets when the number of different sized networks were greater than the smallest CIDR value of the networks.
* net: cleanup unsigned to unsigned intEric Dumazet2012-09-081-4/+4
| | | | | | | Use of "unsigned int" is preferred to bare "unsigned" in net tree. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Use MSEC_PER_SEC instead of harcoded valueJozsef Kadlecsik2012-05-151-2/+2
| | | | | David Laight and Eric Dumazet noticed that we were using hardcoded 1000 instead of MSEC_PER_SEC to calculate the timeout.
* Backport nla_put_net* functions as NLA_PUT* were removedJozsef Kadlecsik2012-05-101-0/+22
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* ipset: Stop using NLA_PUT*().David S. Miller2012-05-102-29/+38
| | | | | | | These macros contain a hidden goto, and are thus extremely error prone and make code hard to audit. Signed-off-by: David S. Miller <davem@davemloft.net>
* Fix hash size checking in kernelJozsef Kadlecsik2012-05-061-0/+16
| | | | | | The hash size must fit both into u32 (jhash) and the max value of size_t. The missing checking could lead to kernel crash, bug reported by Seblu.
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