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Author SHA1 Message Date
Hanno Becker
756abeb4e1 Fix typo in MPS test suite 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
d7fcbfa71e Test paused argument of MPS reader mbedtls_mps_reader_reclaim() 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
032b352684 Improve naming of local variables in MPS reader implementation 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
00931492da Fix spacing in MPS test suite 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
7594c68049 Document status of MPS upstreaming 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
43c8f8cf79 Put MPS under the umbrella of the TLS 1.3 experimental configuration 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
61d7eedcb5 Fix Doxygen headers for MPS files 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
2332f8f435 Rename static variable for MPS trace depth 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
15da2fcf81 Remove unnecessary parameter in MPS reader unit test 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
5047b56758 Improve wording in MPS unit tests 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
b17212a8bf Use size_t instead of int for index in buffer loops in MPS unit test 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
8a04b10ed8 Fix include path for MPS reader header in MPS test suite 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
77e4f485e1 Move illustration of (un)supported cases in MPS reader documentation 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
97c8e930e2 Fix diagram in documentation of MPS reader 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
1682a8b6fe Don't use abbreviated names for local variables in MPS reader 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
b9c086adc5 Use int pointer for paused param in mbedtls_mps_reader_reclaim() 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
fea81b3997 Improve and fix wording in MPS reader documentation 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
f1cfa319c4 Fix typos in documentation of MBEDTLS_ERR_MPS_READER_NEED_MORE 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
d913e2e982 Remove duplicate definition of MBEDTLS_MPS_ERR_BASE 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
4a079c5be7 Fix documentation for mbedtls_mps_[stored_]size_t 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
46101c76f9 Improve wording of documentation of mbedtls_mps_size_t 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
6e3484e123 Clarify documentation of MBEDTLS_MPS_STATE_VALIDATION 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
53314aade1 Adjust spacing for MPS reader entries in library/Makefile 
Existing entries use combination of tabs and spaces, for whatever reason.

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
3d0db81690 Fix typo in MPS reader documentation 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
8fc107c9fb Clarify wording in MPS reader documentation 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
a408c1719c Clarify wording in MPS reader documentation 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
49cc1317b0 Fix typo in MPS reader documentation 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
b1855434eb Rename mbedtls_mps_reader::acc_avail -> acc_available 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
f81e41f1e4 Improve readability of MPS reader implementation 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
0bea62f2d7 Fix typo in reader documentation 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
4f84e20eb0 Don't invalidate MPS reader buffers upon commit call 
Previously, the semantics of mbedtls_mps_reader_commit() was to invalidate
all buffers previously fetched via mbedtls_mps_reader_get(), forbidding
any further use by the 'consumer'. This was in fact a necessary constraint
for the current implementation, which did some memory moving in
mbedtls_mps_reader_commit().

This commit simplifies the reader's semantics and implementation in
the following way:

- API: A call to mbedtls_mps_reader_commit() does no longer invalidate
       the buffers previously obtained via mbedtls_mps_reader_get().
       Instead, they can continue to be used until
       mbedtls_mps_reader_reclaim() is called.

       Calling mbedtls_mps_reader_commit() now only sets a marker
       indicating which parts of the data received through
       mbedtls_mps_reader_get() need not be backed up once
       mbedtls_mps_reader_reclaim() is called. Allowing the user
       to call mbedtls_mbedtls_reader_commit() multiple times
       before mbedtls_mps_reader_reclaim() is mere convenience:
       We'd get exactly the same functionality if instead of
       mbedtls_mps_reader_commit(), there was an additional argument
       to mbedtls_mps_reader_reclaim() indicating how much data
       to retain. However, the present design is more convenient
       for the user and doesn't appear to introduce any unnecessary
       complexity (anymore), so we stick with it for now.

- Implementation: mbedtls_mps_reader_commit() is now a 1-liner,
                  setting the 'commit-marker', but doing nothing else.

                  Instead, the complexity of mbedtls_mp_reader_reclaim()
                  slightly increases because it has to deal with creating
                  backups from both the accumulator and the current
                  fragment. In the previous implementation, which shifted
                  the accumulator content with every call to
                  mbedtls_mps_reader_commit(), only the backup from the
                  fragment was necessary; with the new implementation
                  which doesn't shift anything in
                  mbedtls_mps_reader_commit(), we need to do the
                  accumulator shift in mbedtls_mps_reader_reclaim().

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
014f683ca9 Test MPS reader when reclaim fails because the acc is too small 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
bc64f945e4 Update VS2010 project file 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:20:18 +01:00
Hanno Becker
8899396fd1 Move MPS reader to mbedtls_mps_ namespace 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
984fbded58 Move MPS trace macros to MBEDTLS_MPS_ namespace 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
c518c3b7bb Rename MPS files library/mps/xxx.[ch] to library/mps_xxx.[ch] 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
b910016049 Add MPS trace module implementation 
This commit adds an implementation of the MPS trace module
based on `printf()`.

The enabling macro MBEDTLS_MPS_TRACE remains unset by default
because MPS tracing is very verbose and consumes unnecessary
space in the CI.

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
2b8bad3e80 MPS Reader Tests: Test feed() of NULL buffer 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
223b72e40e MPS Reader Tests: Exercise inconsistent reads after pausing 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
714cbeb4f5 MPS Reader Tests: Add random test 
This commit adds a test exercising the reader in a random way
and comparing the outcomes against what we expect based on the
abstract model of the reader from the producer's and consumer's
perspective.

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
b6fdd35a38 MPS Reader Tests: Use accumulator multiple times 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
e1f173c36f MPS Reader Tests: Continue fetching after reclaim() was rejected 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
cb2a88ed38 MPS Reader Tests: Attempt reclaim while more data is available 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
aac41225d3 MPS Reader Tests: Test multiple feed() calls to fulfill read request 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
e82952acb3 MPS Reader Tests: Test use of accumulator 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
caf1a3f663 MPS Reader Tests: Accumulator too small 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
7d86b74cef MPS Reader Tests: Request more data than what's available 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
7973b2dcac MPS Reader Tests: Test two rounds of fetching in multiple steps 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
dbd8a96487 MPS Reader Tests: Add test for feed-{get,get,...}-commit-reclaim 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00
Hanno Becker
0e4edfc083 MPS Reader Tests: Add test for >1 feed-get-commit-reclaim cycles 
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
 2021-03-29 14:19:32 +01:00