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Author SHA1 Message Date
Manuel Pégourié-Gonnard
71ce4ef981 Fix bug with UDP proxy not forwarding enough 
We previously introduced a safety check ensuring that if a datagram had
already been dropped twice, it would no longer be dropped or delayed
after that.

This missed an edge case: if a datagram is dropped once, it can be
delayed any number of times. Since "delay" is not defined in terms of
time (x seconds) but in terms of ordering with respect to other messages
(will be forwarded after the next message is forwarded), depending on
the RNG results this could result in an endless loop where all messages
are delayed until the next, which is itself delayed, etc. and no message
is ever forwarded.

The probability of this happening n times in a row is (1/d)^n, where d
is the value passed as delay=d, so for delay=5 and n=5 it's around 0.03%
which seems small but we still happened on such an occurrence in real
life:

    tests/ssl-opt.sh --seed 1625061502 -f 'DTLS proxy: 3d, min handshake, resumption$'

results (according to debug statements added for the investigation) in
the ClientHello of the second handshake being dropped once then delayed
5 times, after which the client stops re-trying and the test fails for
no interesting reason.

Make sure this doesn't happen again by putting a cap on the number of
times we fail to forward a given datagram immediately.

Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
 2021-07-06 12:39:43 +02:00
Dave Rodgman
bd3bfbf5c2
Merge pull request #4737 from daverodgman/migration-guide 2021-06-30 21:31:53 +01:00
Dave Rodgman
7b743193b0 Move subsection 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 20:10:10 +01:00
Dave Rodgman
9637bd30a3 Move subsections 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 20:07:57 +01:00
Dave Rodgman
b0e6bb54f9 Move subsection 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 20:03:55 +01:00
Dave Rodgman
26c12eb523 Remove C from code block 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:58:00 +01:00
Dave Rodgman
10963278e7 Mark all code blocks as C 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
a014831732 Add missing backticks 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
7d2ac88f93 Correct hyperlink 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
2482650483 Correct hyperlink 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
2b03457ca5 Improve wording 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
b4d15b1556 Move subsection 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
8128b69ffe Move subsection 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
715966862d Move subsection 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
507827e75a Move subsection 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
68547187f6 Move subsections 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
897a95f46c Move subsection 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
3f66943bdd Move subsection 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
2d05e0f440 Move subsection 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
aa1fba2fed Move subsection 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
7018053460 Reorder subsections 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
28701c63cb Fix grammatical error 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
ce53b3afd6 Remove reference to removed item 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:13:24 +01:00
Dave Rodgman
9d3417845c Add backticks where needed 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 19:12:32 +01:00
Dave Rodgman
2e1e623d33 Correct hyperlink syntax 
Co-authored-by: Tomasz Rodziewicz <40165497+TRodziewicz@users.noreply.github.com>
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 17:58:10 +01:00
Dave Rodgman
6753a775b8 Fix grammatical error 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 17:15:28 +01:00
Dave Rodgman
26ad6c7ea7 Fix typo 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 17:14:01 +01:00
Dave Rodgman
9f5774f56d
Merge pull request #4739 from gabor-mezei-arm/3258_fp30_implement_one-shot_MAC_and_cipher 
Implement one-shot cipher
 2021-06-30 17:04:23 +01:00
Dave Rodgman
8d91ceb19d Remove empty 3.0-migration-guide.d 
This is now captured in 3.0-migration-guide.md

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 16:56:59 +01:00
Dave Rodgman
92170cc3e1 Add general cross-reference for low/high-level crypto 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 14:53:23 +01:00
Dave Rodgman
c936bbb15a Make blank lines before sections consistent 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 14:53:23 +01:00
Dave Rodgman
b1c6b4a7a5 Add cross-reference 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 14:53:16 +01:00
Dave Rodgman
0a7ff4a4e2
Merge pull request #4741 from gabor-mezei-arm/3267_fp30_sign_verify_key_policies 
Key policy extension for PSA_KEY_USAGE_SIGN/VERIFY_HASH
 2021-06-30 14:50:57 +01:00
Dave Rodgman
a3758208ae Move sub-sections to more appropriate places 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 14:17:03 +01:00
Dave Rodgman
4ea5643046 Change some section names 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 14:16:22 +01:00
Dave Rodgman
d462ca1f72 Fix typos 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 11:26:08 +01:00
Dave Rodgman
a54c16805e Improve wording relating to removal of MBEDTLS_ERR_SSL_BAD_HS_XXX 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 11:11:07 +01:00
Dave Rodgman
a5a3cce49b Add link between sections 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 11:06:58 +01:00
Gilles Peskine
a481052407 Add migration guide and changelog entry for MBEDTLS_PRIVATE 
We forgot those in #4511.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
 2021-06-30 11:06:40 +01:00
Dave Rodgman
e4ec84631b Fix typos 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 09:52:40 +01:00
Dave Rodgman
b491b2b051 Add SSL error code updates from #4724 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 09:49:30 +01:00
gabor-mezei-arm
5ce25d7806
Remove obsolete comment 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-06-30 10:46:00 +02:00
gabor-mezei-arm
47060db199 Give a better name for struct member 
Signed-off-by: gabor-mezei-arm <gabor.mezei@arm.com>
 2021-06-30 10:45:58 +02:00
Dave Rodgman
7078973b7b Improve wording 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 09:34:02 +01:00
Dave Rodgman
4a5d3c08c6 Fix typo 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 09:34:02 +01:00
Dave Rodgman
30dc603958 Reorder sections 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 09:34:02 +01:00
Dave Rodgman
d8a1017abf add section headings 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 09:34:02 +01:00
Dave Rodgman
36bb5ff6e3 minor updates 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 09:34:02 +01:00
Dave Rodgman
d267ec361d Add formatting codes to level 3 headings 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 09:34:02 +01:00
Dave Rodgman
a0e8db09ac Change headings to level 3 to enable use of sections 
Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
 2021-06-30 09:34:02 +01:00