MINOR: quic: Do not forget STREAM frames received in disorder
Add a function to process all STREAM frames received and ordered
by their offset (qc_treat_rx_strm_frms()) and modify
qc_handle_bidi_strm_frm() consequently.
When a packet is present in the RX buffer at the first place
but without a null reference counter, there is no need to continue
to try to empty the buffer, it is sure the next packet will not
be at the first place!
MINOR: ssl: Remove empty lines from "show ssl ocsp-response" output
There were empty lines in the output of the CLI's "show ssl
ocsp-response" command (after the certificate ID and between two
certificates). This patch removes them since an empty line should mark
the end of the output.
Amaury Denoyelle [Thu, 16 Dec 2021 15:15:18 +0000 (16:15 +0100)]
MINOR: quic: simplify the removal from ODCID tree
With the DCID refactoring, the locking is more centralized. It is
possible to simplify the code for removal of a quic_conn from the ODCID
tree.
This operation can be conducted as soon as the connection has been
retrieved from the DCID tree, meaning that the peer now uses the final
DCID. Remove the bit to flag a connection for removal and just uses
ebmb_delete() on each sucessful lookup on the DCID tree. If the
quic_conn has already been removed, it is just a noop thanks to
eb_delete() implementation.
Amaury Denoyelle [Wed, 15 Dec 2021 15:32:56 +0000 (16:32 +0100)]
MINOR: quic: refactor DCID lookup
A new function named qc_retrieve_conn_from_cid() now contains all the
code to retrieve a connection from a DCID. It handle all type of packets
and centralize the locking on the ODCID/DCID trees.
Amaury Denoyelle [Tue, 14 Dec 2021 14:04:14 +0000 (15:04 +0100)]
MINOR: quic: compare coalesced packets by DCID
If an UDP datagram contains multiple QUIC packets, they must all use the
same DCID. The datagram context is used partly for this.
To ensure this, a comparison was made on the dcid_node of DCID tree. As
this is a comparison based on pointer address, it can be faulty when
nodes are removed/readded on the same pointer address.
Replace this comparison by a proper comparison on the DCID data itself.
To this end, the dgram_ctx structure contains now a quic_cid member.
Amaury Denoyelle [Tue, 14 Dec 2021 16:20:59 +0000 (17:20 +0100)]
MINOR: quic: refactor concat DCID with address for Initial packets
For first Initial packets, the socket source dest address is
concatenated to the DCID. This is used to be able to differentiate
possible collision between several clients which used the same ODCID.
Refactor the code to manage DCID and the concatenation with the address.
Before this, the concatenation was done on the quic_cid struct and its
<len> field incremented. In the code it is difficult to differentiate a
normal DCID with a DCID + address concatenated.
A new field <addrlen> has been added in the quic_cid struct. The <len>
field now only contains the size of the QUIC DCID. the <addrlen> is
first initialized to 0. If the address is concatenated, it will be
updated with the size of the concatenated address. This now means we
have to explicitely used either cid.len or cid.len + cid.addrlen to
access the DCID or the DCID + the address. The code should be clearer
thanks to this.
The field <odcid_len> in quic_rx_packet struct is now useless and has
been removed. However, a new parameter must be added to the
qc_new_conn() function to specify the size of the ODCID addrlen.
Amaury Denoyelle [Tue, 14 Dec 2021 16:17:28 +0000 (17:17 +0100)]
MINOR: quic: rename constant for haproxy CIDs length
On haproxy implementation, generated DCID are on 8 bytes, the minimal
value allowed by the specification. Rename the constant representing
this size to inform that this is haproxy specific.
Amaury Denoyelle [Mon, 13 Dec 2021 16:07:55 +0000 (17:07 +0100)]
MINOR: quic: add missing lock on cid tree
All operation on the ODCID/DCID trees must be conducted under a
read-write lock. Add a missing read-lock on the lookup operation inside
listener handler.
MINOR: quic: Do not mix packet number space and connection flags
The packet number space flags were mixed with the connection level flags.
This leaded to ACK to be sent at the connection level without regard to
the underlying packet number space. But we want to be able to acknowleged
packets for a specific packet number space.
This is required if we do not want to make haproxy crash during zerortt
interop runner test which makes a client open multiple streams with
long request paths.
A client sends a 0-RTT data packet after an Initial one in the same datagram.
We must be able to parse such packets just after having parsed the Initial packets.
Export the code responsible which set the ->app_ops structure into
quic_set_app_ops() function. It must be called by the TLS callback which
selects the application (ssl_sock_advertise_alpn_protos) so that
to be able to build application packets after having received 0-RTT data.
MINOR: quic: No TX secret at EARLY_DATA encryption level
The TLS does not provide us with TX secrets after we have provided it
with 0-RTT data. This is logic: the server does not need to send 0-RTT
data. We must skip the section where such secrets are derived if we do not
want to close the connection with a TLS alert.
Enable 0-RTT at the TLS context level:
RFC 9001 4.6.1. Enabling 0-RTT
Accordingly, the max_early_data_size parameter is repurposed to hold a
sentinel value 0xffffffff to indicate that the server is willing to accept
QUIC 0-RTT data.
At the SSL connection level, we must call SSL_set_quic_early_data_enabled().
CLEANUP: quic: Remove cdata_len from quic_tx_packet struct
This field is no more useful. Modify the traces consequently.
Also initialize ->pn_node.key value to -1, which is an illegal value
for QUIC packet number, and display it in traces if different from -1.
MINOR: quic: Add traces for STOP_SENDING frame and modify others
If not handled by qc_parse_pkt_frms(), the packet which contains it is dropped.
Add only a trace when parsing this frame at this time.
Also modify others to reduce the traces size and have more information about streams.
DOC: vars: Add documentation about the set-var conditions
The set-var converter as well as the http and tcp set-var actions can
now be given multiple conditions that need to all be true for the
variable's contents to actually be changed. Those conditions can concern
the variable as well as the input contents and can also work by
comparing the variable and the input values.
MEDIUM: vars: Enable optional conditions to set-var converter and actions
This patch adds the possibility to add a set of conditions to a set-var
call, be it a converter or an action (http-request or http-response
action for instance). The conditions must all be true for the given
set-var call for the variable to actually be set. If any of the
conditions is false, the variable is left untouched.
The managed conditions are the following : "ifexists", "ifnotexists",
"ifempty", "ifnotempty", "ifset", "ifnotset", "ifgt", "iflt". It is
possible to combine multiple conditions in a single set-var call since
some of them apply to the variable itself, and some others to the input.
This patch does not change the fact that variables of scope proc are
still created during configuration parsing, regardless of the conditions
that might be added to the set-var calls in which they are mentioned.
For instance, such a line :
http-request set-var(proc.foo,ifexists) int(5)
would not prevent the creation of the variable during init, and when
actually reaching this line during runtime, the proc.foo variable would
already exist. This is specific to the proc scope.
These new conditions mean that a set-var could "fail" for other reasons
than memory allocation failures but without clearing the contents of the
variable.
MINOR: vars: Parse optional conditions passed to the set-var actions
This patch adds the parsing of the optional condition parameters that
can be passed to the set-var and set-var-fmt actions (http as well as
tcp). Those conditions will not be taken into account yet in the var_set
function so conditions passed as parameters will not have any effect.
Since actions do not benefit from the parameter preparsing that
converters have, parsing conditions needed to be done by hand.
MINOR: vars: Parse optional conditions passed to the set-var converter
This patch adds the parsing of the optional condition parameters that
can be passed to the set-var converter. Those conditions will not be
taken into account yet in the var_set function so conditions passed as
parameters will not have any effect. This is true for any condition
apart from the "ifexists" one that is also used to replace the
VF_UPDATEONLY flag that was used to prevent proc scope variable creation
from a LUA module.
MINOR: vars: Delay variable content freeing in var_set function
When calling var_set on a variable of type string (SMP_T_STR, SMP_T_BIN
or SMP_T_METH), the contents of the variable were freed directly. When
adding conditions to set-var calls we might have cases in which the
contents of an existing variable should be kept unchanged so the freeing
of the internal buffers is delayed in the var_set function (so that we
can bypass it later).
MINOR: vars: Set variable type to ANY upon creation
The type of a newly created variable was not initialized. This patch
sets it to SMP_T_ANY by default. This will be required when conditions
can be added to a set-var call because we might end up creating a
variable without setting it yet.
MINOR: vars: Move UPDATEONLY flag test to vars_set_ifexist
The vars_set_by_name_ifexist function was created to avoid creating too
many variables from a LUA module. This was made thanks to the
VF_UPDATEONLY flags which prevented variable creation in the var_set
function. Since commit 3a4bedccc ("MEDIUM: vars: replace the global name
index with a hash") this limitation was restricted to 'proc' scope
variables only.
This patch simply moves the scope test to the vars_set_by_name_ifexist
function instead of the var_set function.
Daniel Jakots [Wed, 8 Dec 2021 01:34:39 +0000 (20:34 -0500)]
BUILD: ssl: unbreak the build with newer libressl
In LibreSSL 3.5.0, BIO is going to become opaque, so haproxy's
compat macros will no longer work. The functions they substitute
have been available since LibreSSL 2.7.0.
David CARLIER [Mon, 6 Dec 2021 11:00:10 +0000 (11:00 +0000)]
MEDIUM: cfgparse: numa detect topology on FreeBSD.
allowing for all platforms supporting cpu affinity to have a chance
to detect the cpu topology from a given valid node (e.g.
DragonflyBSD seems to be NUMA aware from a kernel's perspective
and seems to be willing start to provide userland means to get
proper info).
Amaury Denoyelle [Wed, 15 Dec 2021 08:48:39 +0000 (09:48 +0100)]
CLEANUP: cfgparse: modify preprocessor guards around numa detection code
numa_detect_topology() is always define now if USE_CPU_AFFINITY is
activated. For the moment, only on Linux an actual implementation is
provided. For other platforms, it always return 0.
This change has been made to easily add implementation of NUMA detection
for other platforms. The phrasing of the documentation has also been
edited to removed the mention of Linux-only on numa-cpu-mapping
configuration option.
BUG/MEDIUM: mworker/cli: crash when trying to access an old PID in prompt mode
The master process encounter a crash when trying to access an old
process which left from the master CLI.
To reproduce the problem, you need a prompt to a previous worker, then
wait for this worker to leave, once it left launch a command from this
prompt. The s->target is then filled with a NULL which is dereferenced
when trying to connect().
This patch fixes the problem by checking if s->target is NULL.
Lukas Tribus [Thu, 9 Dec 2021 00:27:14 +0000 (01:27 +0100)]
DOC: config: fix error-log-format example
In commit 6f7497616 ("MEDIUM: connection: rename fc_conn_err and
bc_conn_err to fc_err and bc_err"), fc_conn_err became fc_err, so
update this example.
MINOR: h3: fix possible invalid dereference on htx parsing
The htx variable is only initialized if we have received a HTTP/3
HEADERS frame. Else it must not be dereferenced.
This should fix the compilation on CI with gcc.
src/h3.c: In function ‘h3_decode_qcs’:
src/h3.c:224:14: error: ‘htx’ may be used uninitialized in this function
[-Werror=maybe-uninitialized]
224 | htx->flags |= HTX_FL_EOM
MINOR: quic: Compilation fix for quic_rx_packet_refinc()
This was reported by the CI wich clang as compilator.
In file included from src/ssl_sock.c:80:
include/haproxy/xprt_quic.h:1100:50: error: passing 'int *' to parameter of
type 'unsigned int *' converts between pointers to integer types with
different sign [-Werror,-Wpointer-sign]
} while (refcnt && !HA_ATOMIC_CAS(&pkt->refcnt, &refcnt, refcnt - 1));
^~~~~~~
BUG/MINOR: mux-quic: properly initialize flow control
Initialize all flow control members on the qcc instance. Without this,
the value are undefined and it may be possible to have errors about
reached streams limit.
The xprt layer is reponsible to notify the mux of a CONNECTION_CLOSE
reception. In this case the flag QC_CF_CC_RECV is positionned on the
qcc and the mux tasklet is waken up.
One of the notable effect of the QC_CF_CC_RECV is that each qcs will be
released even if they have remaining data in their send buffers.
BUG/MINOR: cli/server: Don't crash when a server is added with a custom id
When a server is dynamically added via the CLI with a custom id, the key
used to insert it in the backend's tree of used names is not initialized.
The server id must be used but it is only used when no custom id is
provided. Thus, with a custom id, HAProxy crashes.
Now, the server id is always used to init this key, to be able to insert the
server in the corresponding tree.
This patch should fix the issue #1481. It must be backported as far as 2.4.
MINOR: http-rules: Add capture action to http-after-response ruleset
It is now possible to perform captures on the response when
http-after-response rules are evaluated. It may be handy to capture headers
from responses generated by HAProxy.
This patch is trivial, it may be backported if necessary.
BUILD: mux-quic: fix compilation with DEBUG_MEM_STATS
Replace bug.h by api.h in mux_quic header.
This is required because bug.h uses atomic operations when compiled with
DEBUG_MEM_STATS. api.h takes care of including atomic.h before bug.h.
Amaury Denoyelle [Tue, 30 Nov 2021 10:23:29 +0000 (11:23 +0100)]
MINOR: quic: add HTX EOM on request end
Set the HTX EOM flag on RX the app layer. This is required to notify
about the end of the request for the stream analyzers, else the request
channel never goes to MSG_DONE state.
MINOR: mux-quic: remove uneeded code to check fin on TX
Remove a wrong comparaison with the same buffer on both sides. In any
cases, the FIN is properly set by qcs_push_frame only when the payload
has been totally emptied.
On h09 app layer, if there is not enought size in the tx buffer, the
transfer is interrupted and the flag QC_SF_BLK_MROOM is positionned.
The transfer is woken up by the mux when new buffer size becomes
available.
This ensure that no data is silently discarded during transfer. Without
this, once the buffer is full the data were removed and thus not send to
the client resulting in a truncating payload.
MINOR: quic: Remove QUIC TX packet length evaluation function
Remove qc_eval_pkt() which has come with the multithreading support. It
was there to evaluate the length of a TX packet before building. We could
build from several thread TX packets without consuming a packet number for nothing (when
the building failed). But as the TX packet building functions are always
executed by the same thread, the one attached to the connection, this does
not make sense to continue to use such a function. Furthermore it is buggy
since we had to recently pad the TX packet under certain circumstances.
After the handshake has succeeded, we must delete any remaining
Initial or Handshake packets from the RX buffer. This cannot be
done depending on the state the connection (->st quic_conn struct
member value) as the packet are not received/treated in order.
MINOR: quic: Race issue when consuming RX packets buffer
Add a null byte to the end of the RX buffer to notify the consumer there is no
more data to treat.
Modify quic_rx_packet_pool_purge() which is the function which remove the
RX packet from the buffer.
Also rename this function to quic_rx_pkts_del().
As the RX packets may be accessed by the QUIC connection handler (quic_conn_io_cb())
the function responsible of decrementing their reference counters must not
access other information than these reference counters! It was a very bad idea
to try to purge the RX buffer asap when executing this function.
MINOR: quic: RX buffer full due to wrong CRYPTO data handling
Do not leave in the RX buffer packets with CRYPTO data which were
already received. We do this when parsing CRYPTO frame. If already
received we must not consider such frames as if they were not received
in order! This had as side effect to interrupt the transfer of long streams
(ACK frames not parsed).
MEDIUM: mux-quic: handle when sending buffer is full
Handle the case when the app layer sending buffer is full. A new flag
QC_SF_BLK_MROOM is set in this case and the transfer is interrupted. It
is expected that then the conn-stream layer will subscribe to SEND.
The MROOM flag is reset each time the muxer transfer data from the app
layer to its own buffer. If the app layer has been subscribed on SEND it
is woken up.
MEDIUM: mux-quic: wake up xprt on data transferred
On qc_send, data are transferred for each stream from their qcs.buf to
the qcs.xprt_buf. Wake up the xprt to warn about new data available for
transmission.
MEDIUM: mux-quic: subscribe on xprt if remaining data after send
The streams data are transferred from the qcs.buf to the qcs.xprt_buf
during qc_send. If the xprt_buf is not empty and not all data can be
transferred, subscribe the connection on the xprt for sending.
The mux will be woken up by the xprt when the xprt_buf will be cleared.
This happens on ACK reception.
Implement the subscription in the mux on the qcs instance.
Subscribe is now used by the h3 layer when receiving an incomplete frame
on the H3 control stream. It is also used when attaching the remote
uni-directional streams on the h3 layer.
In the qc_send, the mux wakes up the qcs for each new transfer executed.
This is done via the method qcs_notify_send().
The xprt wakes up the qcs when receiving data on unidirectional streams.
This is done via the method qcs_notify_recv().
Set the QC_SF_FIN_STREAM on the app layers (h3 / hq-interop) when
reaching the HTX EOM. This is used to warn the mux layer to set the FIN
on the QUIC stream.
MAJOR: mux-quic: implement a simplified mux version
Re-implement the QUIC mux. It will reuse the mechanics from the previous
mux without all untested/unsupported features. This should ease the
maintenance.
Note that a lot of features are broken for the moment. They will be
re-implemented on the following commits to have a clean commit history.
Add BUG_ON statement when handling a non implemented frames on the
control stream. This is required because frames must be removed from the
RX buffer or else it will stall the buffer.
MINOR: quic: fix segfault on CONNECTION_CLOSE parsing
At the moment the reason_phrase member of a
quic_connection_close/quic_connection_close_app structure is not
allocated. Comment the memcpy to it to avoid segfault.
Willy Tarreau [Fri, 3 Dec 2021 16:38:42 +0000 (17:38 +0100)]
IMPORT: slz: use the correct CRC32 instruction when running in 32-bit mode
Many ARMv8 processors also support Aarch32 and can run armv7 and even
thumb2 code. While armv8 compilers will not emit these instructions,
armv7 compilers that are aware of these processors will do. For
example, using gcc built for an armv7 target and passing it
"-mcpu=cortex-a72" or "-march=armv8-a+crc" will result in the CRC32
instruction to be used.
In this case the current assembly code fails because with the ARM and
Thumb2 instruction sets there is no such "%wX" half-registers. We need
to use "%X" instead as the native 32-bit register when running with a
32-bit instruction set, and use "%wX" when using the 64-bit instruction
set (A64).
Willy Tarreau [Mon, 6 Dec 2021 07:01:02 +0000 (07:01 +0000)]
BUILD: tree-wide: avoid warnings caused by redundant checks of obj_types
At many places we use construct such as:
if (objt_server(blah))
do_something(objt_server(blah));
At -O2 the compiler manages to simplify the operation and see that the
second one returns the same result as the first one. But at -O1 that's
not always the case, and the compiler is able to emit a second
expression and sees the potential null that results from it, and may
warn about a potential null deref (e.g. with gcc-6.5). There are two
solutions to this:
- either the result of the first test has to be passed to a local
variable
- or the second reference ought to be unchecked using the __objt_*
variant.
This patch fixes all occurrences at once by taking the second approach
(the least intrusive). For constructs like:
objt_server(blah) ? objt_server(blah)->name : "no name"
a macro could be useful. It would for example take the object type
(server), the field name (name) and the default value. But there
are probably not enough occurrences across the whole code for this
to really matter.
DOC: spoe: Clarify use of the event directive in spoe-message section
Only one event is possible for a spoe-message section. If defined several
time, only the last one is considered. The documentation is now explicit on
this point.
Tim Duesterhus [Wed, 1 Dec 2021 22:04:15 +0000 (23:04 +0100)]
BUG/MEDIUM: sample: Fix memory leak in sample_conv_jwt_member_query
The function leaked one full buffer per invocation. Fix this by simply removing
the call to alloc_trash_chunk(), the static chunk from get_trash_chunk() is
sufficient.
BUILD: bug: Fix error when compiling with -DDEBUG_STRICT_NOCRASH
ha_backtrace_to_stderr() must be declared in CRASH_NOW() macro whe HAProxy
is compiled with DEBUG_STRICT_NOCRASH. Otherwise an error is reported during
compilation:
include/haproxy/bug.h:58:26: error: implicit declaration of function ‘ha_backtrace_to_stderr’ [-Werror=implicit-function-declaration]
58 | #define CRASH_NOW() do { ha_backtrace_to_stderr(); } while (0)
BUG/MINOR: resolvers: Don't overwrite the error for invalid query domain name
When a response is validated, the query domain name is checked to be sure it
is the same than the one requested. When an error is reported, the wrong
goto label was used. Thus, the error was lost. Instead of
RSLV_RESP_WRONG_NAME, RSLV_RESP_INVALID was reported.
This bug was introduced by the commit c1699f8c1 ("MEDIUM: resolvers: No
longer store query items in a list into the response").
This patch should fix the issue #1473. No backport is needed.
BUG/MEDIUM: h1: Properly reset h1m flags when headers parsing is restarted
If H1 headers are not fully received at once, the parsing is restarted a
last time when all headers are finally received. When this happens, the h1m
flags are sanitized to remove all value set during parsing.
But some flags where erroneously preserved. Among others, H1_MF_TE_CHUNKED
flag was not removed, what could lead to parsing error.
To fix the bug and make things easy, a mask has been added with all flags
that must be preserved. It will be more stable. This mask is used to
sanitize h1m flags.
This patch should fix the issue #1469. It must be backported to 2.5.
Emeric Brun [Wed, 1 Dec 2021 11:08:42 +0000 (12:08 +0100)]
BUG/MAJOR: segfault using multiple log forward sections.
For each new log forward section, the proxy was added to the log forward
proxy list but the ref on the previous log forward section's proxy was
scratched using "init_new_proxy" which performs a memset. After configuration
parsing this list contains only the last section's proxy.
The post processing walk through this list to resolve "ring" names.
Since some section's proxies are missing in this list, the resolving
is not done for those ones and the pointer on the ring is kept to null
causing a segfault at runtime trying to write a log message
into the ring.
This patch shift the "init_new_proxy" before adding the ref on the
previous log forward section's proxy on currently parsed one.
MEDIUM: resolvers: No longer store query items in a list into the response
When the response is parsed, query items are stored in a list, attached to
the parsed response (resolve_response).
First, there is one and only one query sent at a time. Thus, there is no
reason to use a list. There is a test to be sure there is only one query
item in the response. Then, the reference on this query item is only used to
validate the domain name is the one requested. So the query list can be
removed. We only expect one query item, no reason to loop on query records.
In addition, the query domain name is now immediately checked against the
resolution domain name. This way, the query item is only manipulated during
the response parsing.
BUG/MEDIUM: resolvers: Detach query item on response error
When a new response is parsed, it is unexpected to have an old query item
still attached to the resolution. And indeed, when the response is parsed
and validated, the query item is detached and used for a last check on its
dname. However, this is only true for a valid response. If an error is
detected, the query is not detached. This leads to undefined behavior (most
probably a crash) on the next response because the first element in the
query list is referencing an old response.
BUG/MINOR: server: Don't rely on last default-server to init server SSL context
During post-parsing stage, the SSL context of a server is initialized if SSL
is configured on the server or its default-server. It is required to be able
to enable SSL at runtime. However a regression was introduced, because the
last parsed default-server is used. But it is not necessarily the
default-server line used to configure the server. This may lead to
erroneously initialize the SSL context for a server without SSL parameter or
the skip it while it should be done.
The problem is the default-server used to configure a server is not saved
during configuration parsing. So, the information is lost during the
post-parsing. To fix the bug, the SRV_F_DEFSRV_USE_SSL flag is
introduced. It is used to know when a server was initialized with a
default-server using SSL.
For the record, the commit f63704488e ("MEDIUM: cli/ssl: configure ssl on
server at runtime") has introduced the bug.
Add pointer to counters as a member for h1c structure. This pointer is
initialized on h1_init function. This is useful to quickly access and
manipulate the counters inside every h1 functions.
BUG/MINOR: mux-h1: Fix splicing for messages with unknown length
Splicing was disabled fo Messages with an unknown length (no C-L or T-E
header) with no valid reason. So now, it is possible to use the kernel
splicing for such messages.
BUG/MEDIUM: mux-h1: Fix splicing by properly detecting end of message
Since the 2.4.4, the splicing support in the H1 multiplexer is buggy because
end of the message is not properly detected.
On the 2.4, when the requests is spliced, there is no issue. But when the
response is spliced, the client connection is always closed at the end of the
message. Note the response is still fully sent.
On the 2.5 and higher, when the last requests on a connection is spliced, a
client abort is reported. For other requests there is no issue. In all cases,
the requests are fully sent. When the response is spliced, the server connection
hangs till the server timeout and a server abort is reported. The response is
fully sent with no delay.
The root cause is the EOM block suppression. There is no longer extra block to
be sure to call a last time rcv_buf()/snd_buf() callback functions. At the end,
to fix the issue, we must now detect end of the message in rcv_pipe() and
snd_pipe() callback functions. To do so, we rely on the announced message length
to know when the payload is finished. This works because the chunk-encoded
messages are not spliced.
This patch must be backported as far as 2.4 after an observation period.
David CARLIER [Fri, 26 Nov 2021 20:44:44 +0000 (20:44 +0000)]
MEDIUM: pool: Following up on previous pool trimming update.
Apple libmalloc has its own notion of memory arenas as malloc_zone with
rich API having various callbacks for various allocations strategies but
here we just use the defaults.
In trim_all_pools, we advise to purge each zone as much as possible, called "greedy" mode.
BUG/MINOR: vars: Fix the set-var and unset-var converters
In commit 3a4bedccc6 the variable logic was changed. Instead of
accessing variables by their name during runtime, the variable tables
are now indexed by a hash of the name. But the set-var and unset-var
converters try to access the correct variable by calculating a hash on
the sample instead of the already calculated variable hash.
As soon as the connection ID (the one choosen by the QUIC server) has been used
by the client, we can delete its original destination connection ID from its tree.
This patch modifies ha_quic_set_encryption_secrets() to store the
secrets received by the TLS stack and prepare the information for the
next key update thanks to quic_tls_key_update().
qc_pkt_decrypt() is modified to check if we must used the next or the
previous key phase information to decrypt a short packet.
The information are rotated if the packet could be decrypted with the
next key phase information. Then new secrets, keys and IVs are updated
calling quic_tls_key_update() to prepare the next key phase.
quic_build_packet_short_header() is also modified to handle the key phase
bit from the current key phase information.
MINOR: quic: Add quic_tls_key_update() function for Key Update
This function derives the next RX and TX keys and IVs from secrets
for the next key update key phase. We also implement quic_tls_rotate_keys()
which rotate the key update key phase information to be able to continue
to decrypt old key phase packets. Most of these information are pointers
to unsigned char.