Found out by following gcc warning:
"""
libosmo-netif/src/stream.c:147:11: warning: argument to variable-length array may be too large due to conversion from ‘int’ to ‘unsigned int’ [-Wvla-larger-than=]
147 | uint8_t buf[sctp_sockopt_event_subscribe_size];
| ^~~
"""
Change-Id: I181ae5c0480788fc96abd2bb1edf003244884c8f
This makes it easier to follow the general path selection based on
protocol type. It will also make it easier when we add new paths based
on socket domain.
Change-Id: Ia3e0f4407e00a2dac9ee885fe1cc1cb4b463898a
In the case of SCTP, an association supports now containing both IPv4
and v6 addresses.
Depends: libosmocore.git Change-Id I36d8ab85d92bba4d6adb83bc1875eb61094ed2ef
Change-Id: Ie6bb17a9af6ca21d5e350f9c9d2d74c97c5a00af
Some previous commit added some code to workaround some kernel ABI
unstabilities but forgot to add the code inside a conditional
preprocessor block.
Fixes: 157ad6d707
Change-Id: Ibee01222d8d11cf2520cdbd4d0d5bed6b72d2107
New define is available since libosmocore 1.1.0, and we already require
1.3.0, so no need to update dependenices.
Let's change it to avoid people re-using old BSC_FD_* symbols when
copy-pasting somewhere else.
Change-Id: I269690c1c9e4d19b5b69eef206b95e71f7931188
It makes a lot more sense calling it this way since it matches the state
of the stream at that point.
Change-Id: Ic02aec3f7f095e0e0e1f940425f577be5048e98f
It's not really needed right now from logic point of view, since we
reused NONE for that. But it makes logging and logic clearer, and will
make it easier if we decide to move it to FSMs at a later point in time.
Other state value_string names are also modified with its whitespace
removed since anyway we'd need to change them to match WAIT_RECONNECT
length. Let's drop the space because imho it's not that useful and
anyway if we move to FSMs at some point then we won't have them anyway.
Change-Id: I7b9a6da87081c418b0d14bab5f34369c5eca6fe8
With previous state, osmo_stream_cli_close() could be called from
osmo_stream_cli_open()(), and in that case state was kept as NONE while
ending up with an associated fd being registered in the select loop.
As a result, osmo_stream_cli_fd_cb() could be called while in state
NONE, which was not expected and would simply return without modifying
fd state flags, causing it to be called again and again.
Related: OS#4378
Change-Id: Ie3342f882893a71ad1538c17ad9ee9fa4433eaa4
It should not happen anyway because no fd should be active if state is
NONE, but still it's an extra check.
Change-Id: I6d58762b7d10078eb8d0981c13d35cb6f85cfe86
Similar to what we do in libosmocore already, we want to
deterministically enable or disable support for the feature without
having into account if the system has a libsctp. If libsctp is missing
and support is enabled, then fail.
Extra checks are also added:
* Check netinet/sctp.h header
* Check libosmocore was built with libsctp support (API
osmo_sock_init2_multiaddr() we require).
* In stream.c make sure it can be built without HAVE_LIBSCTP, and that
set_addrs() fails for more than 1 address (since that feature is only
supported through osmo_sock_init2_multiaddrs()).
Change-Id: I4b3e1f1894f13ac1175a71a5139c02a2633be26d
This API will be later used to set multiple addresses for SCTP sockets.
Depends: libosmocore.git Ic8681d9e093216c99c6bca4be81c31ef83688ed1
Related: OS#3608
Change-Id: I09f0d989f2309abdeb304fe570355abed2cd107b
This API will be later used to set multiple addresses for SCTP sockets.
Depends: libosmocore.git Ic8681d9e093216c99c6bca4be81c31ef83688ed1
Related: OS#3608
Change-Id: I0fe62f518e195db4e34f3b0ad1762bb57ba9d92a
If messages are sent using osmo_stream_cli_send() while the stream
is still (re)connecting, they won't have a chance to be sent until the
stream is connected, and hence they are queued until
CONNECTING->CONNECTED is done. However, at that time
(osmo_stream_cli_fd_cb), the WRITE flag was dropped unconditionally,
which meant already queued packets didn't have the opportunity to be
sent by the same callback until first message is enqueued and WRITE flag
is set (again by osmo_stream_cli_send()).
Let's make them be sent as soon as possible once the connection is
available.
Related: OS#4188
Change-Id: I289495f9aad6389c5f2623fb072d676235b7d24c
This supposed to be variant of osmo_stream_cli_open() with explicit
control over reconnection logic but it's plain broken: doxygen docs
contradict the code, actual reconnection logic is affected by timeout
parameter directly which is set in different function.
It seems like we haven't been affected by this so far because we always
use it in auto-reconnection mode which is triggered by default due to
positive reconnection timeout value (5 sec) automatically used in the
absense of explicitly set timeout.
Looking at commit history, this function already been source of
confusion in the past. Instead of trying to fix this mess, let's just
deprecate it entirely and properly document use of
osmo_stream_cli_set_reconnect_timeout() to control reconnection logic.
The only known user is libosmo-sccp which won't use it as of
0a93a683f3cb8e5977eb4a666ab207db6e7d7af9 commit.
Change-Id: Id988ed0274b363db049f59cbf6a193727c8c3c8a
Previously closing the client did not alter its state, so we might
end-up with a client without any file descriptors, but being in state
STREAM_CLI_STATE_CONNECTED. Fix this inconsistency by setting
appropriate state.
Related issue is that reconnect function, which is always (at least in
the library and examples) called when some problem with the connection
is detected, closed the connection only after checking whether
reconnection is enabled. This might result in another inconsistency
fixed in this patch by moving the check below connection cleanup.
While at it, also move connection close logging to appropriate place:
it's confusing to see logs about connection being closed while in
reality it wasn't even established.
Change-Id: If41ed60bd625488c283d1e8a2b078e640f04c78e
Add functions to get the description of a server link or client
connection which examine data on corresponding socket.
Those functions use static buffers and intended for single use in
log/printf statements as illustarted by corresponding example changes.
Change-Id: If9a8e211da85956781479862a63c4fc6e53ed6be
Introduce logging macro wrapper to properly log current client state and
function to aid in debugging.
Change-Id: Ie22a80dcec95998cce0b25053fdf74f23eab6e53
While we are processing a read event, the connection's
callback might free the connection. Check for this and don't
attempt to process further events on an already freed connection.
Change-Id: I0a9c7d8e3263c73440f7084dbb1792a4ca5038f0
Related: OS#3685
Depends: g#11704 (for libosmo-sccp)
When establishing a client-side stream connection via libosmo-netif,
we must using non-blocking connect if we want to avoid blocking/stalling
the entire process. The libosmocore socket API provides the
OSMO_SOCK_F_NONBLOCK flag for this. Make use of it!
Change-Id: I9bfcb39b5801a36ef32ca0d1f3eb8236687d7ed6
Related: OS#3383
Documentation of osmo_sock_init2 doesn't provide information of any
specific value of errno set/expected after running the function. It is
incorrect to expect a specific value of errno and looking at the
implementation it is actually not a good idea to check it.
If reconnect flag is set, let's reconnect always instead of looking at
errno to decide.
Change-Id: I25b33f4cdc496ae31ff240d445b9b2805091845c
Introduce osmo_stream_srv_set_flush_and_destroy() which marks a
stream to be 'flushed and destroyed'. No new messages will be
received on this stream, and no new messages can be queued.
Once the Tx queue has been drained, the connection is destroyed.
The API user is given a chance to perform cleanup operations
in the closed_cb() callback for the connection.
The same mechanism will be added for client-side connections
in a follow-up patch.
Change-Id: I8ed78fe39c463e9018756700d13ee5ebe003b57f
Related: OS#2789
Suggested-by: Harald Welte
On destroying a client or server stream, deallocate any msgbs that are still
pending in the queue.
In libosmo-sccp, the ss7_test.c in test_as(), messages are queued and were,
before this, left floating after the stream was destroyed, causing a sanitizer
memory leak. This patch fixes the leak.
Depends: Ia291832ca445d4071f0ed9a01730d945ff691cf7 (libosmocore)
Change-Id: Iaad35f03e3bdfabf3ba82b16e563c0a5d1f03639
In previous implementation, if no reconfiguring is needed, a new socket
would be created without closing the old one, leaking the previous
socket. Instead, if we don't need reconfiguring, we return 0 as no
operation is required.
Change-Id: I6c1a7fff63e44840fb5e2bc7ace5e9a61e304987
We didn't check for cases where setsockopt_nodelay() fails. Let's check
for that and bail out + close the socket.
Change-Id: I0adbc4cec35be7c36bdf01d4d8fefd6097e9be5d
Fixes: coverity CID#166970
Enabling sender_dry_event in SCTP_FLAGS breaks reliable delivery of DATA
chunks to the scoket user on Linux. Let's avoid enabling that, while
still enabling various other interesting events.
See https://bugzilla.redhat.com/show_bug.cgi?id=1442784 for all related
details.
Change-Id: Ib616cd07a6044ca2ee7e05093b22df3369c62b56
We were using the wrong variable when setting the SCTP_NODELAY,
resulting in the setsoctkopt() fialing.
Change-Id: Ic04cb8bb5ff41f177f7f5b7f7e2a2ecc686dd4c0
Pau Espin
Max
Harald Welte
Vadim Yanitskiy
Sylvain Munaut