Instead of casting k_delayed_work directly to k_work, use the
k_work field name. This avoids warnings from Coverity and
allows the code to work even if the k_delayed_work fields are
re-ordered in the future.
Coverity-CID: 214346
Fixes#28659
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add dependency to UDP in DHCPv4 Kconfig option as UDP is needed
in DHPCv4 to work properly.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Bug description:
When in tcp_conn_unref(), in case one of the delayed works is already
submitted to sysworkq (after delay period), e.g. send_timer, the check
of k_delayed_work_remaining_get() prevents calling
k_delayed_work_cancel().
This leads to corrupting sysworkq when zeroing struct tcp* conn.
Note that the "next" pointer for the work queue is part of the struct
work (in _reserved field). Which is, in this case, a member of struct
tcp.
Scenario leading to the bug:
(1) net_tcp_connect() is called from a work in sysworkq
(2) net_tcp_connect() submits conn->send_timer to sysworkq
(3) while net_tcp_connect() is waiting on connect_sem, delay period
passes (z_timeout) and send_timer enters sysworkq work slist
(4) also, some other code (app) submits more works to queue, now pointed
by conn->send_timer in sysworkq work list
(5) connection fails (no answer to SYN), causing a call to
tcp_conn_unref()
(6) tcp_conn_unref() is calling tcp_send_queue_flush()
(7) checking k_delayed_work_remaining_get(&conn->send_timer) returns 0
due to delay period end, but send_timer is still in sysworkq work
slist (sysworkq thread still hasn't handled the work)
(8) BUG!: no call to k_delayed_work_cancel(&conn->send_timer)
(9) back in tcp_conn_unref(), a call to memset(conn, 0, sizeof(*conn))
zeroes conn->send_timer
(10) conn->send_timer is pointed to in sysworkq work slist, but is
zeroed, clearing pointer to following works submitted in stage (4)
(11) EFFECT! the works in stage (4) are never executed!!
NOTES:
* k_delayed_work_cancel(), handles both states:
(1) delayed work pends on timeout and
(2) work already in queue.
So there is no need to check k_delayed_work_remaining_get()
* This is also relevant for conn->send_data_timer
Solution:
removing checks of k_delayed_work_remaining_get(), always calling
k_delayed_work_cancel() for work in struct tcp, in unref, before memset
Signed-off-by: David Komel <a8961713@gmail.com>
Instead of hardcoding the priority1 and priority2 values used
in BMCA, let the user tweak the values via Kconfig.
Fixes#28151
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Since conn->send_data_total is of time size_t we need to use %zu or
we'll get build errors in sanitycheck on 64-bit platforms
Fixes#28605
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
If the network driver for some reason did not set the data in
the network packet properly, then just drop it as we cannot do
anything with just plain net_pkt.
Fixes#28131
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If there is no handler for IPv4 broadcast packet, then ignore it
instead of trying to send an ARP message to resolve the senders
address.
Fixes#21016
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
We need to have timer that closes the connection for good if
we do not get the FIN and ACK reponse from the peer.
If there is any pending data when application does close(),
send them before sending FIN.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If there is some error during connection creation, just bail
out in order to avoid null pointer access.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If we try to send data but the sending window is full, then
try to kick the resend of the pending data.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If there is no space in the sending window, then return -EAGAIN
so that the caller may try later.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
We should have a max value for sending window so that application
is not able to use all our net_bufs for queueing packets.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The socket layer expects to receive -ENOBUFS if we do not have
any network buffers so cannot build a network message to be sent.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If there is an error, the net_context.c:context_sendto() will
free the net_pkt, so we must not do it here.
This commit fixes this error message:
<err> net_pkt: *** ERROR *** pkt 0x20421908 is freed already
(context_sendto():1672)
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Usually the out-of-memory situation will clear itself eventually,
so if that happens in TCP, then keep the connection running and
let the user to decide what to do next.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If we run out of network buffers and cannot send data, and if
we have a blocking socket, then wait until new buffers are
available before returning. As this might lead to deadlock,
wait only max 10 seconds and return ENOMEM if we cannot get
buffers in a reasonable amount of time.
Fixes#28216
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Instead of hardcoded value of 3, use the value from Kconfig file
so that user can tweak the TCP retry count.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Use SYS_SLIST_FOR_EACH_CONTAINER_SAFE() macro when searching
the connection list so that we notice if new entries are added
or removed in the list.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Instead of forcing the slist node to be first in the tcp struct,
use the pointer to node when accessing the slist. This way we
can change the ordering of fields in tcp struct.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Change so that the caller of lwm2m_init_message is
responsible for generating a message id and remove message id generation
from lwm2m_init_message. Prevents generating a new id when the caller's
intent is to init a message with id 0.
Fixes#28283
Signed-off-by: Pascal Brogle <pascal.brogle@husqvarnagroup.com>
message id 0 and token 0 have special semantics in the lwm2m engine,
they are used to request generation of new id, mark them as such.
Signed-off-by: Pascal Brogle <pascal.brogle@husqvarnagroup.com>
Fix the OpenThread initialization to prevent the IPv6 interface to
be enabled when `CONFIG_OPENTHREAD_RAW` is set.
Signed-off-by: Eduardo Montoya <eduardo.montoya@nordicsemi.no>
Because the previous commit fixed the destination address check,
we need to handle msghdr (used by sendmsg()) in CAN socket.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
No need to specifically check CAN sockets here. This also means
that SocketCAN will need to support sendmsg() call too. This will
come in following commit.
Fixes#28229
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The timeout variable in `dtls_rx()` was initialized improperly.
Coverity ID: 214219
Fixes#28161
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
The default string representing Sensor Type resource in Generic IPSO
object would not fit into the predefined buffer. Increase the buffer
size and add extra BUILD_ASSERT to detect this situation.
Coverity ID: 214225
Fixes#28164
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
The timeout log error message condition in wrong. When the timout
happens the "count == -1" and the condition is invalid.
This commit fixes it.
Signed-off-by: Lukasz Maciejonczyk <lukasz.maciejonczyk@nordicsemi.no>
When the connection is terminated, make sure that any pending
data is feed to the application.
Fixes#28057
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Fix for a problem in current lwm2m firmware object implementation.
Transfer should not begin when an empty string is received.
Signed-off-by: Marin Jurjevic <marin.jurjevic@hotmail.com>
Some implementation consist of multiple libraries to be linked instead
of one. Added possibility to pass multiple libraries. Additionally
renamed the config name as it was stateing something different than it
does.
Signed-off-by: Marek Porwisz <marek.porwisz@nordicsemi.no>
If we receive a TCP segment with FIN | ACK | PSH flags, then
update the ack values properly.
Fixes#27982
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This new option allows to include `sockets_tls.c` into the build when
socket offloading is enabled.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Given that the offloaded poll handling differs from the poll handling of
native sockets (entire poll function call is offloaded), some
adjustements were needed to make TLS socket work with offloaded poll
calls.
To achieve this, in case socket offloading is used, instead of jumping
directly to the offloaded poll call, a TLS wrapper for the offloaded
poll will be called. This wrapper will do additional checks at the
mbedtls level, to verify that the event is only notified to the caller
when the application data is available (i. e. not to report events
during handshake or when partial data is received, not ready to
decrypt).
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Separate TLS sockets implementation from net_context layer. Instead of
calling net_context functions directly, create an underlying TCP/UDP
socket, and call socket functions on it instead. This results in a
simpler design, where we don't need to duplicate specific parts of code
from the native socket implementation. Additionally, this allows to use
a different TCP/UDP stack underneath (i. e. when sockets offloading is
used).
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
This commit adds helper function to verify protocol, which was done in
two different places in the code. The function returns the underlying
protocol information on success.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
When connection is closed and we send ACK flag, use proper seq
values so that any data that is still in flight will get acked too.
Currently this assumes that window is still open.
Fixes#27876
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Entropy device, as being unique here, does not need to be passed through
mbedtls and can instead set static locally.
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.
A coccinelle rule is used for this:
@r_const_dev_1
disable optional_qualifier
@
@@
-struct device *
+const struct device *
@r_const_dev_2
disable optional_qualifier
@
@@
-struct device * const
+const struct device *
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Following are the changes to variable names that are matching
with tag names (Rule 5.7 violations)
In kernel.h, event_type is matching with a tag name in
lib/os/onoff.c. Added a _ prefix to event_type and
also to the macro argument names.
In userspace.c, *dyn_obj is matching with the tag name
dyn_obj in the file itslef. Changed it to dyn
In device.h, device_mmio.h, init.h and init.c,
changed the *device to dev. Except for one change in
init.h
Signed-off-by: Spoorthy Priya Yerabolu <spoorthy.priya.yerabolu@intel.com>
Add more tests to verify that we discard malformed packets.
In order to simplify the testing, separate message validation to
dns_validate_msg() function in resolve.c. Allow that function to
be called from unit test. This way we can construct invalid DNS
messages in unit test and verify that they are discarded when
needed.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The ANCOUNT has nothing to do with label count so remove the
original while loop and just go through all the labels until
we have read all of them.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
