The implementation of CSN.1 codec was taken from Wireshark, where
it's implemented in pure C. For some reason it was mixed with C++
specific features, mostly using references in parameter
declaration. Not sure what are the benefits.
Change-Id: I56d8b7fbd2f9f4e0bdd6b09d0366fe7eb7aa327a
This would allow us to catch more bugs. Note that I had to remove
printing of pointer address to make the output deterministic.
Change-Id: I1a77441eb957353c919bc73f8e3a2e38f4a383a9
It contails no valid identity, and thus violates the specs.
Let's keep it 'as-is' to check that decoder actually fails.
Change-Id: I663edfdaac0c065e08ab7b6dc50d2f18e433433c
Related: OS#4392
(as they are part of the RlcMacUplink_t structure that is also used to call csnStreamDissector function).
Port from wireshark.git commit 9f8b638cfa8a660fb64c54dcadb83e6747db0a15.
Ported-by: Pau Espin Pedrol <pespin@sysmocom.de>
Change-Id: If46f8cc3f21f527f911dcac6ff1b78f182104a00
Currently code using that function in osmo-pcu is disabled, allegadly
because SGSN was sending incorrect values, but it looks more like a CSN1
issue.
Related: OS#1525, OS#3499
Change-Id: I92c86397f988afaa791871d823a45fa85054f3bb
Old method takes lots of lines of codes and prints inn unconfortable way
because left-trailing zeros are dropped, making it difficult to split in
bytes.
Change-Id: I56c24f934824e4e52a91a7273aec384b2e15aa67
There is a duality of initialization: early_init() in bts.cpp wants to init
logging even before static instances get initialized. Make sure that
tall_pcu_ctx is initialized during early_init() as well. There is a build
context that does not seem to include bts.cpp (osmo-pcu-remote), so to be sure,
init tall_pcu_ctx as NULL and both in early_init() as well as pcu_main.cpp,
init both tall_pcu_ctx and logging if it is still NULL.
Change-Id: I2199b62d0270bd35dec2283e8f5b364b7c63915b
Fix attempted read past vector boundaries in case of a starting bit offset !=
0, so that the last amount of bits read should be < 8. In the case of
CSN_LEFT_ALIGNED_VAR_BMP, the mod-8 calculation was flawed, and in the final
step, 8 bits were read instead of the remainder < 8. This lead to -EINVAL being
returned by bitvec_get_bit_pos() and bogus resulting data.
Instead, read 8 bits only as long as at least 8 bits remain, and read any
remaining bits < 8 in a final step. Drop unneeded nB1 variable and an obvious
comment.
Adjust the unit test assertion in testCsnLeftAlignedVarBmpBounds() in
RLCMACTest.cpp.
Based on a fix by Aravind Sirsikar <Arvind.Sirsikar@radisys.com>, but
implemented differently.
Related: OS#1805
Change-Id: I490498c8da6b531f54acb673379379f7b10907c0
CSN1 decoding currently contains an attempted read past vector boundaries in
case of a starting bit offset != 0, so that the last amount of bits read should
be < 8. In the case of CSN_LEFT_ALIGNED_VAR_BMP, the mod-8 calculation is
flawed, and in what should be the final step of reading n < 8 bits, 8 bits are
read instead of n (with an extraneous read of n bits following after that).
This leads to -EINVAL being returned by bitvec_get_bit_pos() and bogus
resulting data.
Add testCsnLeftAlignedVarBmpBounds() in RLCMACTest.cpp to show and expect this
bug. The test's expectation shall be corrected along with the bug fix in a
subsequent commit.
Related: OS#1805
Tweaked-by: Neels Hofmeyr <nhofmeyr@sysmocom.de>
Change-Id: I4641f5d1d49f66cb1a5cd813befb3a2a266001b0
The remaining_bits_len is correctly decremented while encoding
CSN_RECURSIVE_ARRAY for fixing the bug.
Details of the bug is in https://projects.osmocom.org/issues/1641
During introduction of basic EGPRS feature new hex dump message
PUASS, from a different working network log was used in Unit test.
It exposed the issue of incorrect handling of recursive array
encoding in osmo-pcu.
Fixes: OS#1641
This patch is for fixing encoding of padding bits according to the
3gpp spec 44.060 section 11, wherein it shall always start with 0
bit followed with spare padding bits.
During introduction of basic EGPRS feature new hex dump messages
from a different working network log were used in Unit test. These
exposed the issue of incorrect handling of padding bits encoding
in osmo-pcu.
Corrections in the existing test vector of rlcmac is also updated.
In testsuite tbf appropriate corrections for the Tbftest.err is
also done.
Vadim Yanitskiy
Pau Espin
Neels Hofmeyr