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* fix printing of "tcp flags syn" and "tcp flags == syn" expressionsSabrina Dubroca2018-05-251-0/+7
| | | | | | | | | | | | | | | | | | | | | | Commit 6979625686ec ("relational: Eliminate meta OPs") introduced some bugs when printing bitmask types. First, during the post-processing phase of delinearization, the expression for "tcp flags syn" (PAYLOAD & flag != 0) gets converted to PAYLOAD == flag, which is not equivalent. This should be PAYLOAD (IMPL) flag. Then, during output, the "==" sign from "tcp flags == syn" is dropped, because the bitmask condition in must_print_eq_op() was removed. Let's restore it, so that "tcp flags == syn" doesn't get printed as "tcp flags syn". An extra check for value types is added, so that we don't start printing "==" for sets such as "tcp flags {syn,ack}" Finally, add a regression test for this particular case. Fixes: 6979625686ec ("relational: Eliminate meta OPs") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Florian Westphal <fw@strlen.de>
* tests/py: Use libnftables instead of calling nft binaryPhil Sutter2018-04-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: fix up meta l4proto change for ip familyFlorian Westphal2017-05-191-0/+661
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>