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* evaluate: convert expr_rt byteorder when evaluating statment argFlorian Westphal2017-08-281-0/+1
| | | | | | | | | | | | | | expr_rt might write data in host byte order, so make sure to convert if needed. This makes 'tcp option maxseg size rt mtu' actually work, right now such rules are no-ops because nft_exthdr never increases the mss. While at it, extend the example to not bother testing non-syn packets. Reported-by: Matteo Croce <technoboy85@gmail.com> Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: add tcp option set support / tcp mss mangling test casesFlorian Westphal2017-08-224-1/+15
| | | | | Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: add test case for ttl/protocol setFlorian Westphal2017-08-174-0/+58
| | | | | | | | | nft .. ip ttl set 42 did set the protocol field and left ttl alone, add test cases for this. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: fix arp chain testFlorian Westphal2017-08-081-3/+2
| | | | | | | | | | The forward chain isn't supported anymore (on kernel side it only worked if bridge netfilter 'call-arptables' sysctl is on), so this test now fails with nf-next kernel. In nftables one can filter/test arp packets in bridge family directly. Signed-off-by: Florian Westphal <fw@strlen.de>
* tests: py: Fail test forcefully when bug is not fixedShyam Saini2017-06-261-1/+1
| | | | | | | | | | | | | | | | | | | | When we have "fail" in the test cases then py test doesn't complain anything, but the test should complain if the fix is not applied. Before applying 986dea8a4a9d ("evaluate: avoid reference to multiple src data in statements which set values"), nft throws following error message and exits with error code 134. $ nft add rule x y tcp dport set { 0 , 1 } BUG: unknown expression type set reference nft: netlink_linearize.c:696: netlink_gen_expr: Assertion `0' failed. Aborted This commit enforces nft-test.py to throw error message when the fix is not applied. Signed-off-by: Shyam Saini <mayhs11saini@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: restrict meta nfproto test cases to inet familyFlorian Westphal2017-06-184-31/+35
| | | | | | | Followup patch will reject meta nfproto for non-inet families. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: remove two non-sensical rulesFlorian Westphal2017-06-182-25/+0
| | | | | | | | | | | | | | | meta nfproto returns the hook family that the current packet is being evaluted in, e.g. NFPROTO_NETDEV in case we're called from the netdev context. This makes no sense, if we add a rule to netdev, bridge, ip, ... table then thats where it will be evaluated, no runtime test needed. Only exception: inet family, in this case, nfproto will be either ipv4 or ipv6. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: restrict ct saddr test to inet familyFlorian Westphal2017-06-184-8/+23
| | | | | | | | | | | | | | | | any/ct.t: ERROR: line 94: src/nft add rule --debug=netlink ip6 test-ip6 output meta nfproto ipv4 ct original saddr 1.2.3.4: This rule should not have failed. Actually, this failure is "ok; we can't find upper layer protocol in this case, but even if we'd "fix" this it is still non-sensical, meta nfproto ipv4, but family is ipv6 --> rule would never match. First move this to an inet-specific test. A followup patch will reject meta nfproto for all families except inet. Reported-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: Add test for ambiguity while setting the valueShyam Saini2017-06-186-0/+16
| | | | | | | | | | | | | | | | | | | | | This test checks bug identified and fixed in the commit mentioned below In a statement if there are multiple src data then it would be totally ambiguous to decide which value to set. Before the commit was made it returned 134(BUG), but now it returns 1 i.e, an error message. Following rules tests ambiguity while setting the value: $ sudo nft add rule ip test-ip4 output ct mark set {0x11333, 0x11} <cmdline>:1:41-55: Error: you cannot use a set here, unknown value to use add rule ip test-ip4 output ct mark set {0x11333, 0x11} ~~~~~~~~~~~~^^^^^^^^^^^^^^^ Test: 986dea8 ("evaluate: avoid reference to multiple src data in statements which set values") Signed-off-by: Shyam Saini <mayhs11saini@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: rename ct eventmask to eventFlorian Westphal2017-06-072-13/+19
| | | | | | | | ct status isn't named 'statusmask' either. Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* ct: fix inet/bridge/netdev family handling for saddr/daddrFlorian Westphal2017-06-062-0/+11
| | | | | | | | | | | | | "ct orignal saddr" has an invalid data type, as the address can be either ipv4 or ipv6. For some cases we could infer it from the rhs, but there are cases where we don't have any information, e.g. when passing ct original saddr to jhash expression. So do the same thing that we do for "rt nexthop" -- error out and hint to user they need to specifiy the desired address type with "meta nfproto". Suggested-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: flush stdout on each test runPablo Neira Ayuso2017-05-291-0/+2
| | | | | | Useful when redirecting output to file and tail -f it. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: fix up meta l4proto change for ip familyFlorian Westphal2017-05-1956-6881/+176
| | | | | | | We can delete some of the payload files now as ip/ip6/inet produce same implicit meta l4proto dep. Signed-off-by: Florian Westphal <fw@strlen.de>
* tests: fix up meta l4proto change for ip6 familyFlorian Westphal2017-05-1921-391/+391
| | | | | | | | | | | | After previous commit nft generates meta l4proto for ipv6 dependencies instead of checking the (first) nexthdr value. This fixes up all tests cases accordingly except one which fails with ip6/reject.t: ... 12: 'ip6 nexthdr 6 reject with tcp reset' mismatches 'meta l4proto 6 reject with tcp reset' This will be fixed by removing the implicit dependency in a followup patch. Signed-off-by: Florian Westphal <fw@strlen.de>
* src: allow update of net base w. meta l4proto icmpv6Florian Westphal2017-05-192-0/+8
| | | | | | | | | | nft add rule ip6 f i meta l4proto ipv6-icmp icmpv6 type nd-router-advert <cmdline>:1:50-60: Error: conflicting protocols specified: unknown vs. icmpv6 add icmpv6 to nexthdr list so base gets updated correctly. Reported-by: Thomas Woerner <twoerner@redhat.com> Signed-off-by: Florian Westphal <fw@strlen.de>
* tests: add ip reject with tcp and check for mark tooFlorian Westphal2017-05-188-6/+21
| | | | | | | ... to avoid resetting e.g. the ssh session to the vm that runs nft-test.py. Signed-off-by: Florian Westphal <fw@strlen.de>
* netlink_delinearize: reject: remove dependency for tcp-resetsFlorian Westphal2017-05-181-1/+1
| | | | | | We can remove a l4 dependency in ip/ipv6 families. Signed-off-by: Florian Westphal <fw@strlen.de>
* tests: don't kill dependencies accross statementsFlorian Westphal2017-05-082-0/+26
| | | | | | add a test case for previous commit. Signed-off-by: Florian Westphal <fw@strlen.de>
* ct: add conntrack event mask supportFlorian Westphal2017-04-242-0/+26
| | | | | Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* hash: generate a random seed if seed option is emptyLiping Zhang2017-04-152-0/+8
| | | | | | | | | | | Typing the "nft add rule x y ct mark set jhash ip saddr mod 2" will not generate a random seed, instead, the seed will always be zero. So if seed option is empty, we shoulde not set the NFTA_HASH_SEED attribute, then a random seed will be generated in the kernel. Signed-off-by: Liping Zhang <zlpnobody@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: Add test cases for nested anonymous setsPhil Sutter2017-03-224-0/+57
| | | | | | | | | This makes sure nesting of anonymous sets works regardless of whether defines are used or not. As a side-effect, it also checks that overlap checking when IP address prefixes are used, works. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* proto: Add some exotic ICMPv6 typesPhil Sutter2017-03-202-3/+39
| | | | | | | | | | | | | | | This adds support for matching on inverse ND messages as defined by RFC3122 (not implemented in Linux) and MLDv2 as defined by RFC3810. Note that ICMPV6_MLD2_REPORT macro is defined in linux/icmpv6.h but including that header leads to conflicts with symbols defined in netinet/icmp6.h. In addition to the above, "mld-listener-done" is introduced as an alias for "mld-listener-reduction". Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: add insert-failure testFlorian Westphal2017-03-162-3/+15
| | | | | | | It should not be possible to add a ip6 restricted helper to ip family. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: add ct helper testsFlorian Westphal2017-03-163-1/+28
| | | | | | | needs minor tweak to nft-test.py so we don't zap the ';' withhin the {}. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: Adjust for changed exthdr debug outputPhil Sutter2017-03-132-14/+14
| | | | | | | | Debug output from libnftnl has changed to include 'present' keyword if NFT_EXTHDR_F_PRESENT flag is set in expression. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* fib: Support existence checkPhil Sutter2017-03-132-0/+13
| | | | | | | | | | | | | | | | | This allows to check whether a FIB entry exists for a given packet by comparing the expression with a boolean keyword like so: | fib daddr oif exists The implementation requires introduction of a generic expression flag EXPR_F_BOOLEAN which allows relational expression to signal it's LHS that a boolean comparison is being done (indicated by boolean type on RHS). In contrast to exthdr existence checks, fib expression can't know this in beforehand because the LHS syntax is absolutely identical to a non-boolean comparison. Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* exthdr: Implement existence checkPhil Sutter2017-03-104-0/+96
| | | | | | | | | | | This allows to check for existence of an IPv6 extension or TCP option header by using the following syntax: | exthdr frag exists | tcpopt window exists Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: hash: support of symmetric hashLaura Garcia Liebana2017-03-062-0/+5
| | | | | | | | | | | | | | | | | | | | | This patch provides symmetric hash support according to source ip address and port, and destination ip address and port. The new attribute NFTA_HASH_TYPE has been included to support different types of hashing functions. Currently supported NFT_HASH_JENKINS through jhash and NFT_HASH_SYM through symhash. The main difference between both types are: - jhash requires an expression with sreg, symhash doesn't. - symhash supports modulus and offset, but not seed. Examples: nft add rule ip nat prerouting ct mark set jhash ip saddr mod 2 nft add rule ip nat prerouting ct mark set symhash mod 2 Signed-off-by: Laura Garcia Liebana <laura.garcia@zevenet.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: fix some typos in READMETimothy Redaelli2017-03-021-3/+3
| | | | | | | Python script name ends by .py instead of .sh Signed-off-by: Timothy Redaelli <tredaelli@redhat.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: revisit tcp options supportPablo Neira Ayuso2017-02-286-61/+60
| | | | | | | | | | | | | | | | | | | Rework syntax, add tokens so we can extend the grammar more easily. This has triggered several syntax changes with regards to the original patch, specifically: tcp option sack0 left 1 There is no space between sack and the block number anymore, no more offset field, now they are a single field. Just like we do with rt, rt0 and rt2. This simplifies our grammar and that is good since it makes our life easier when extending it later on to accomodate new features. I have also renamed sack_permitted to sack-permitted. I couldn't find any option using underscore so far, so let's keep it consistent with what we have. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: add test entries for conntrack zonesFlorian Westphal2017-02-282-0/+57
| | | | | Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: fix incorrect bytecode in numgen and hash mappingsPablo Neira Ayuso2017-02-252-2/+2
| | | | | | | Byteorder is not correct as it is expressed in network byteorder. This uncovered when storing set byteorder in NFTA_USER_DATA. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: Add basic tests for ip, ip6 and inetManuel Messner2017-02-126-0/+656
| | | | | Signed-off-by: Manuel Messner <mm@skelett.io> Signed-off-by: Florian Westphal <fw@strlen.de>
* statement: fix print of ip dnat addressFlorian Westphal2017-02-052-0/+13
| | | | | | | | | | | | the change causes non-ipv6 addresses to not be printed at all in case a nfproto was given. Also add a test case to catch this. Closes: https://bugzilla.netfilter.org/show_bug.cgi?id=1117 Fixes: 5ab0e10fc6e2c22363a ("src: support for RFC2732 IPv6 address format with brackets") Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: Add tests for stateful objectsElise Lennion2017-01-273-0/+59
| | | | | | | | These test for adding counters and quotas, to tables of different families, and for referencing the objects in rules. Signed-off-by: Elise Lennion <elise.lennion@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: Add suport for stateful objects in python testsElise Lennion2017-01-271-0/+131
| | | | | | | | | | | | | | This allows to write pytests using the new stateful objects. To add an object use the symbol '%', followed by the name, type and specifications (currently used in quota): %cnt1 type counter;ok # Adds the counter cnt1 to all tables %qt1 type quota over 25 mbytes;ok # Adds the quota qt1 to all tables Signed-off-by: Elise Lennion <elise.lennion@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* payload: explicit network ctx assignment for icmp/icmp6 in special familiesArturo Borrero Gonzalez2017-01-276-0/+132
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the inet, bridge and netdev families, we can add rules like these: % nft add rule inet t c ip protocol icmp icmp type echo-request % nft add rule inet t c ip6 nexthdr icmpv6 icmpv6 type echo-request However, when we print the ruleset: % nft list ruleset table inet t { chain c { icmpv6 type echo-request icmp type echo-request } } These rules we obtain can't be added again: % nft add rule inet t c icmp type echo-request <cmdline>:1:19-27: Error: conflicting protocols specified: inet-service vs. icmp add rule inet t c icmp type echo-request ^^^^^^^^^ % nft add rule inet t c icmpv6 type echo-request <cmdline>:1:19-29: Error: conflicting protocols specified: inet-service vs. icmpv6 add rule inet t c icmpv6 type echo-request ^^^^^^^^^^^ Since I wouldn't expect an IP packet carrying ICMPv6, or IPv6 packet carrying ICMP, if the link layer is inet, the network layer protocol context can be safely update to 'ip' or 'ip6'. Moreover, nft currently generates a 'meta nfproto ipvX' depedency when using icmp or icmp6 in the inet family, and similar in netdev and bridge families. While at it, a bit of code factorization is introduced. Fixes: https://bugzilla.netfilter.org/show_bug.cgi?id=1073 Signed-off-by: Arturo Borrero Gonzalez <arturo@debian.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: Use stateless option on testsElise Lennion2017-01-1812-15/+15
| | | | | | | | | | | To don't trigger false errors because of unrelated traffic on the tested machine. Tests, which have rules with counter and 'ok' result, are updated to avoid new Warnings. Signed-off-by: Elise Lennion <elise.lennion@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* ct: add average bytes per packet counter supportLiping Zhang2017-01-162-0/+15
| | | | | | | | | | | | | | | | | Similar to connbytes extension in iptables, now you can use it to match average bytes per packet a connection has transferred so far. For example, match avgpkt in "BOTH" diretion: # nft add rule x y ct avgpkt \> 100 Match avgpkt in reply direction: # nft add rule x y ct reply avgpkt \< 900 Or match avgpkt in original direction: # nft add rule x y ct original avgpkt \> 200 Signed-off-by: Liping Zhang <zlpnobody@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: update quota and payloadPablo Neira Ayuso2016-12-1411-61/+61
| | | | | | Include new consumed field for quota, and check for csum_flags in payload. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* mnl: don't send empty set elements netlink message to kernelPablo Neira Ayuso2016-12-142-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following command: # nft --debug=mnl add rule x y flow table xyz { ip saddr timeout 30s counter } breaks with EINVAL. The following netlink message is causing the problem: ... ---------------- ------------------ | 0000000044 | | message length | | 02572 | R--- | | type | flags | | 0000000004 | | sequence number| | 0000000000 | | port ID | ---------------- ------------------ | 02 00 00 00 | | extra header | |00008|--|00002| |len |flags| type| | 78 79 7a 00 | | data | x y z |00008|--|00004| |len |flags| type| | 00 00 00 01 | | data | |00006|--|00001| |len |flags| type| | 78 00 00 00 | | data | x ---------------- ------------------ ... This is incorrect since this describes no elements at all, so it is useless. Add upfront check before iterating over the list of set elements so the netlink message is not placed in the batch. This patch also adds a set so flow tables are minimally covered. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: Test TCP flags match with parenthesesPhil Sutter2016-11-305-0/+33
| | | | | | | | This should test the fix in commit 7222680eb328b ("parser_bison: Allow parens on RHS of relational_expr"). Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Florian Westphal <fw@strlen.de>
* tests/py: Unmask negative set lookupAnatole Denis2016-11-2985-226/+4690
| | | | | | | | Many testcases were masked because of bug #888. This series of patches unmasks them Signed-off-by: Anatole Denis <anatole@rezel.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add log flags syntax supportLiping Zhang2016-11-242-0/+21
| | | | | | | | | | | | | | | | | | | | | Now NF_LOG_XXX is exposed to the userspace, we can set it explicitly. Like iptables LOG target, we can log TCP sequence numbers, TCP options, IP options, UID owning local socket and decode MAC header. Note the log flags are mutually exclusive with group. Some examples are listed below: # nft add rule t c log flags tcp sequence,options # nft add rule t c log flags ip options # nft add rule t c log flags skuid # nft add rule t c log flags ether # nft add rule t c log flags all # nft add rule t c log flags all group 1 <cmdline>:1:14-16: Error: flags and group are mutually exclusive add rule t c log flags all group 1 ^^^ Signed-off-by: Liping Zhang <zlpnobody@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* Revert "tests: py: nft-tests.py: Add function for loading and removing ↵Florian Westphal2016-11-171-32/+0
| | | | | | | | | | | | | | | | | kernel modules" Its not needed at the moment, all tests that need a network interface (meta iif/oif) use the lo interface. For iifname/oifname the network device doesn't have to exist. We can revisit this in case we need it in the future. (seems commit causes issues on kernels built without dummy module). Reported-by: Arturo Borrero Gonzalez <arturo@debian.org> Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Manuel Messner <mm@skelett.io>
* src: add notrack supportPablo Neira Ayuso2016-11-142-0/+6
| | | | | | | This patch adds the notrack statement, to skip connection tracking for certain packets. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: missing range conversion in icmpv6Pablo Neira Ayuso2016-11-141-2/+1
| | | | | | Use range expression to negate ranges. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: add some testcases for log flagsPablo Neira Ayuso2016-11-143-17/+17
| | | | | | | Remove null and zero flags from tests, to reduce the noise when running tests. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: add offset attribute for hash expressionLaura Garcia Liebana2016-11-092-0/+16
| | | | | | | | | | | Add support to add an offset to the hash generator, eg. ct mark set hash ip saddr mod 10 offset 100 This will generate marks with series between 100-109. Signed-off-by: Laura Garcia Liebana <nevola@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: make hash seed attribute optionalLaura Garcia Liebana2016-11-092-0/+8
| | | | | | | | | | | | | | | | | | The hash expression requires a seed attribute to call the jhash operation, eg. # nft add rule x y meta mark set jhash ip saddr . ip daddr mod 2 \ seed 0xdeadbeef With this patch the seed attribute is optional and it's generated by a random function from userspace, eg. # nft add rule x y meta mark set jhash ip saddr . ip daddr mod 2 The kernel will take care of generate a random seed. Signed-off-by: Laura Garcia Liebana <nevola@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>