[PATCH libosmo-netif 00/18] add dummy padding support

From: Pablo Neira Ayuso <pablo(a)netfilter.org> The following patchset, although it looks a bit large, it is composed of many small incremental changes to improve the existing osmux infrastructure and to add dummy padding support. The dummy padding consists of a osmux header and payload that looks like this: OSMUX seq=000 ccid=002 ft=2 ctr=3 amr_f=0 amr_q=0 amr_ft=03 amr_cmr=00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ] The frame type is OSMUX_FT_DUMMY (=2) in the batch that whose payload is padded with 0xff. Note that the message above is padding the circuit ID 2. This is used for early bandwidth preallocation in links that involve relatively slow dynamic bandwidth allocation such as Iridium/OpenPort. The osmux test infrastructure has been improved (to resolve some memleaks) and enhanced to cover this new dummy support. The OpenBSC changeset is composed of one very small patch that will come after this batch. If no major concerns, I'll push this initial batch soon into the repository. Thanks. Pablo Neira Ayuso (18): osmux: discard non voice osmux message osmux: add osmux_input_state structure osmux: add circuit helper functions osmux: rename struct batch_list_node to osmux_circuit osmux: rename circuit->list to circuit->rtp_list osmux: pass up struct osmux_batch osmux: count pending messages to be transformed in the batch osmux: introduce osmux_xfrm_input_close_circuit() osmux: introduce osmux_xfrm_input_open_circuit() tests: osmux: adapt it to use the new circuit API tests: osmux: factor out main test loop tests: osmux: test online deactivation of dummy padding tests: osmux: validate dummy padding with no voice data interaction tests: osmux: test circuit reopening after closure osmux: kill osmux_get_hdr() tests: osmux: fix msgb leaks tests: compile tests with debugging symbols, ie. -g tests: osmux: iterate 64 times in osmo_test_loop() include/osmocom/netif/osmux.h | 8 +- src/osmux.c | 374 ++++++++++++++++++++++++++--------------- tests/Makefile.am | 2 +- tests/osmux/osmux_test.c | 80 ++++++--- 4 files changed, 304 insertions(+), 160 deletions(-) -- 1.7.10.4