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* netlink: don't crash if prefix for < byte is requestedFlorian Westphal2023-12-141-0/+10
| | | | | | | | | | | | | | If prefix is used with a datatype that has less than 8 bits an assertion is triggered: src/netlink.c:243: netlink_gen_raw_data: Assertion `len > 0' failed. This is esoteric, the alternative would be to restrict prefixes to ipv4/ipv6 addresses. Simpler fix is to use round_up instead of divide. Signed-off-by: Florian Westphal <fw@strlen.de>
* tests: never merge across non-expression statements reduxFlorian Westphal2023-09-291-0/+18
| | | | | | | Forgot to 'git add' inet/bridge/netdev payload records. Fixes: 99ab1b8feb16 ("rule: never merge across non-expression statements") Signed-off-by: Florian Westphal <fw@strlen.de>
* tests: py: extend ip frag-off coveragePablo Neira Ayuso2023-08-301-0/+24
| | | | | | Cover matching on DF and MF bits and fragments. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* proto: use hexadecimal to display ip frag-off fieldPablo Neira Ayuso2023-08-301-6/+6
| | | | | | | | | | | | | The ip frag-off field in the protocol definition is 16-bits long and it contains the DF (0x2000) and MF (0x4000) bits too. iptables-translate also suggests: ip frag-off & 0x1ffff != 0 to match on fragments. Use hexadecimal for listing this header field. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: py: remove verdict from closing end intervalPablo Neira Ayuso2021-11-081-1/+1
| | | | | | | | | | | | | Kernel does not allow for NFT_SET_ELEM_INTERVAL_END flag and NFTA_SET_ELEM_DATA. The closing end interval represents a mismatch, therefore, no verdict can be applied. The existing payload files show the drop verdict when this is unset (because NF_DROP=0). This update is required to fix payload warnings in tests/py after libnftnl's ("set: use NFTNL_SET_ELEM_VERDICT to print verdict"). Fixes: 6671d9d137f6 ("mnl: Set NFTNL_SET_DATA_TYPE before dumping set elements") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* evaluate: unbreak verdict maps with implicit map with interval concatenationsPablo Neira Ayuso2021-06-181-0/+11
| | | | | | | | | | | Verdict maps in combination with interval concatenations are broken, e.g. # nft add rule x y tcp dport . ip saddr vmap { 1025-65535 . 192.168.10.2 : accept } Retrieve the concatenation field length and count from the map->map expressions that represents the key of the implicit map. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* evaluate: restore interval + concatenation in anonymous setPablo Neira Ayuso2021-06-111-0/+11
| | | | | | | | | | | | | | | | | | | Perform the table and set lookup only for non-anonymous sets, where the incremental cache update is required. The problem fixed by 7aa08d45031e ("evaluate: Perform set evaluation on implicitly declared (anonymous) sets") resurrected after the cache rework. # nft add rule x y tcp sport . tcp dport vmap { ssh . 0-65535 : accept, 0-65535 . ssh : accept } BUG: invalid range expression type concat nft: expression.c:1422: range_expr_value_low: Assertion `0' failed. Abort Add a test case to make sure this does not happen again. Fixes: 5ec5c706d993 ("cache: add hashtable cache for table") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: remove redundant test casesFlorian Westphal2021-06-071-120/+0
| | | | | | | | | | | | | Check for ... 23-42 ... ... { 23-42 } ... and remove the latter. Followup patch will translate the former to the latter during evaluation step to avoid the unneded anon set. A separate test case will be added that checks for such rewrites. Signed-off-by: Florian Westphal <fw@strlen.de>
* mnl: Set NFTNL_SET_DATA_TYPE before dumping set elementsPhil Sutter2021-03-091-2/+2
| | | | | | | | In combination with libnftnl's commit "set_elem: Fix printing of verdict map elements", This adds the vmap target to netlink dumps. Adjust dumps in tests/py accordingly. Signed-off-by: Phil Sutter <phil@nwl.cc>
* tests: py: update format of registers in bitwise payloads.Jeremy Sowden2020-11-161-21/+21
| | | | | | | | | libnftnl has been changed to bring the format of registers in bitwise dumps in line with those in other types of expression. Update the expected output of Python test-cases. Signed-off-by: Jeremy Sowden <jeremy@azazel.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: Optimize prefix matches on byte-boundariesPhil Sutter2020-11-041-4/+2
| | | | | | | | | | | | | | | | If a prefix expression's length is on a byte-boundary, it is sufficient to just reduce the length passed to "cmp" expression. No need for explicit bitwise modification of data on LHS. The relevant code is already there, used for string prefix matches. There is one exception though, namely zero-length prefixes: Kernel doesn't accept zero-length "cmp" expressions, so keep them in the old code-path for now. This patch depends upon the previous one to correctly parse odd-sized payload matches but has to extend support for non-payload LHS as well. In practice, this is needed for "ct" expressions as they allow matching against IP address prefixes, too. Signed-off-by: Phil Sutter <phil@nwl.cc>
* src: prefer meta protocol as bridge l3 dependencyFlorian Westphal2019-06-191-90/+90
| | | | | | | | | | | | | | | | | | | On families other than 'ip', the rule ip protocol icmp needs a dependency on the ip protocol so we do not treat e.g. an ipv6 header as ip. Bridge currently uses eth_hdr.type for this, but that will cause the rule above to not match in case the ip packet is within a VLAN tagged frame -- ether.type will appear as ETH_P_8021Q. Due to vlan tag stripping, skb->protocol will be ETH_P_IP -- so prefer to use this instead. Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
* Revert "tests: py: remove single-value-anon-set test cases"Pablo Neira Ayuso2019-05-241-0/+120
| | | | This reverts commit d03bcb669c0c645190df9bd166f53380bcac7862.
* tests: py: remove single-value-anon-set test casesFlorian Westphal2019-05-191-120/+0
| | | | | | | | future change will rewrite all single-element anon sets to a cmp op. Retain a few test cases to later check that the rewrite is correct, but remove all others. Signed-off-by: Florian Westphal <fw@strlen.de>
* Revert "proto: support for draft-ietf-tsvwg-le-phb-10.txt"Pablo Neira Ayuso2019-05-091-1/+1
| | | | | | | | This reverts commit 55715486efba424e97361c81d8d47e854f45a5a6. This breaks tests/py. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* proto: support for draft-ietf-tsvwg-le-phb-10.txtLoganaden Velvindron2019-05-031-1/+1
| | | | | | | | | | Upcoming dscp codepoint for background traffic of low precendence such as bulk data transfers with low priority in time, non time-critical backups, larger software updates, web search engines while gathering information from web servers and so on. Signed-off-by: Loganaden Velvindron <logan@cyberstorm.mu> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: fix up expected payloads after expr merge changeFlorian Westphal2019-01-251-2/+4
| | | | | | | | nft currently doesn't do payload merging anymore in some cases, so fix up the expected output. Fixes: ce2651222911 ("payload: refine payload expr merging") Signed-off-by: Florian Westphal <fw@strlen.de>
* tests/py: Use libnftables instead of calling nft binaryPhil Sutter2018-04-111-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a simple nftables Python class in py/nftables.py which gives access to libnftables API via ctypes module. nft-test.py is extended to make use of the above class instead of calling nft binary. Since command line formatting had to be touched anyway, this patch also streamlines things a bit by introducing __str__ methods to classes Table and Chain and making extensive use of format strings instead of onerously adding all string parts together. Since the called commands don't see a shell anymore, all shell meta character escaping done in testcases is removed. The visible effects of this change are: * Four new warnings in ip/flowtable.t due to changing objref IDs (will be addressed later in a patch to libnftnl). * Reported command line in warning and error messages changed slightly for obvious reasons. * Reduction of a full test run's runtime by a factor of four. Status diff after running with 'time': < 83 test files, 77 files passed, 1724 unit tests, 0 error, 33 warning < 87.23user 696.13system 15:11.82elapsed 85%CPU (0avgtext+0avgdata 9604maxresident)k < 8inputs+36800outputs (0major+35171235minor)pagefaults 0swaps > 83 test files, 77 files passed, 1724 unit tests, 4 error, 33 warning > 6.80user 30.18system 3:45.86elapsed 16%CPU (0avgtext+0avgdata 14064maxresident)k > 0inputs+35808outputs (0major+2874minor)pagefaults 0swaps Signed-off-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* tests: add test cases for vmap binop transferFlorian Westphal2018-03-171-0/+24
| | | | | | they fail with 'BUG: invalid binary operation 5'. Signed-off-by: Florian Westphal <fw@strlen.de>
* tests: enable ip/ip.t for bridge protocol, tooFlorian Westphal2017-10-261-0/+760
This does not add any additional warnings, it just increases coverage to bridge. Signed-off-by: Florian Westphal <fw@strlen.de>