Because a next networking API call will lead to a crash. Given that
logging can be easily disabled (disabled by default so far!), don't
be shy and call by the name (i.e. error).
Jira: ZEP-2105
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
If the IP address string is empty, then it is no use trying
to parse it. This was seen when handling DNS server strings when
user has made a mistake and defined the DNS server addresses
incorrectly.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Adjust length of the packet before setup_ipv4_header() which actually
might increase packet size if there is not enough space available.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Create support for registering a callback that will be called
if the device leaves or joins IPv6 multicast group.
Jira: ZEP-1673
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Commit cd35742a2 missed one unref too many on pending packet which was
triggering a crash which commit 0b8434f08 tried to fix, but it generates
a leak when there is not pending entries left in arp core. Finally,
fixing what cd35742a2 should have done: removing the extra unecessary
unref after sending the pending packet.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Errors has been ignored when using TLV writer to create/write object
instance/resources. Modify to propagate the error back to the caller.
To reproduce the issue, try to create IPSO light control object
instances twice. Since the default instance count is 1, the second one
should be rejected and responded w/ error. But the current
implementation will respond w/ 2.04.
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
We did not check the requested object/object instance/resource exists or
not before we adding an observer. Correct it by checking the existence
first.
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
We should stop sending out notification to the peer when the
object/object instances requested to be observed is removed
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
We were using sys_slist_remove() to remove object, object instance and
observer w/o passing the previous sys_snode_t to it (NULL).
This will instruct the function to treat the node as the list head and
result in unexpected behavior after the removal.
Correct it by using sys_slist_find_and_remove() or passing the previous
node to the function.
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
When a request demands to create a new object instance, it will search
whether the request object instance exists or not. However, current
implementation does not reset the lwm2m_engine_obj_inst at the time it
is deleted. It only removes the object instance from the sys list.
Correct the behavior by resetting both object instance and resource
instances at the time it's deleted. Also, consolidate function
lwm2m_delete_handler() and lwm2m_delete_obj_inst().
To reproduce the issue, try to create light control object instance
(/3301), delete the created instance and create it again. You shall find
following error message dumped.
> [ipso_light_control] [ERR] light_control_create: Can not create
instance - already existing: 0
> [lib/lwm2m_engine] [ERR] lwm2m_create_obj_inst: unable to create obj -
3311 instance 0
Signed-off-by: Robert Chou <robert.ch.chou@acer.com>
If the packet is put pending because ARP request need to be
done, then do not unref original packet.
Fixes#1416
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add a command "net arp" to net-shell. This new command will
print ARP cache contents if IPv4 and Ethernet are enabled.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The commit 725be227 ("net/mgmt/event: Commands must be > 0 so
masking them works") prevented IPv6 address setting when an
application was initialized. The check in subsys/net/lib/app/init.c
needs to be adjusted because of that change.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
There were bunch of config options in tests/net, net-shell and
wpan_serial sample, and those options had wrong name so they
were ignored by the code.
Fixes#1428
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
When new connection is accepted, the TCP context variables like
sequence number etc. were not properly set.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
For IPv6 check_ip_addr in subsys/net/ip/net_core.c makes a
NET_DBG call to report when a net_pkt is missing a destination
address. An analogous NET_DBG call has been added to the IPv4
destination address checking.
Signed-off-by: John Andersen <john.s.andersen@intel.com>
prepare_arp() was unreferencing original pkt (called pending there) in
case of error.
net_prepare_arp() was always unreferencing pkt, though it could have
been already unreferenced by prepare_arp() as seen previously which is
an extra bogus unref in this case.
And in case it returned NULL, ethernet_send() would return NET_DROP
which in turn would make net_if's tx code to unref again the pkt.
This patch ensures pkt is unrefed only once and at the right place.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The TCP state string is only printed if CONFIG_NET_DEBUG_TCP is
defined. If that is not the case, then the "net conn" command
should not print the "State" column name as the state will not
be printed.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This reverts commit 817245c564.
In certain cases the peer seems to discard the FIN packet we are
sending, which means that the TCP stream is not closed properly.
This needs more work so revert this for time being.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
When new socket context is created on accepting connection to a
listening socket, its recv_q FIFO should be initialized. Without
initialization, this worked by a chance when FIFO structure was
simple, but recent change to add dlist to it (which now needs
proper initialization) exposed this issue.
Jira: ZEP-2576
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
If the query name is already in numeric format, there is no
need to send the query string to DNS server as we can just
convert it ourselves.
Jira: ZEP-2562
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit removes IP address parsing from DNS init and
replaces it by call to net_ipaddr_parse().
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The net_ipaddr_parse() will take a string with optional port
number and convert its information into struct sockaddr.
The format of the IP string can be:
192.0.2.1:80
192.0.2.42
[2001:db8::1]:8080
[2001:db8::2]
2001:db::42
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If network context is closed, send FIN by placing it to the end
of send queue instead of sending it immediately. This way all
pending data is sent before the connection is closed.
Jira: ZEP-1853
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
TLS and DTLS are not related to each other so allow DTLS to be
enabled even if TLS is disabled.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The "net app" command was accessing NULL pointer if TLS and UDP were
enabled but DTLS was not.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Earlier we modified the original pkt chain when creating IPv6
fragments. This is not a proper way as the original chain might
still be used in TCP when re-sending a message. So when fragmenting
the packet, clone it first and leave original packet intact. This
occupies litle more memory but is now safe.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This is very unlikely to happen but the device will access null
pointer if we do not properly check the return value of header
check function.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
When trying to figure out where ICMP / TCP / UDP header is located
in net_buf, print more information about what we were doing if the
header cannot fit the first fragment. This is much needed infomation
in debugging weird issues.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Using memcpy() to copy net_pkt is not safe because there are
pointers inside. So use the new net_pkt_clone() to do that.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This is needed when one wants to copy the whole fragment chain
and its head pointer net_pkt.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The IP header was stripped by _net_app_ssl_mux() when it received
IP packet. This is fine but if the application expects the get
the IP header, then there is a problem. Fix this by saving IP
header to ssl_context and then putting it back in front of the
packet when the data is passed to application.
Note that this IP header is not used by net_app when the packet
is sent because TLS/DTLS creates a tunnel for transferring packets
and user can only sent packets via this tunnel.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
k_delayed_work_cancel now only fail if it hasn't been submitted which
means it is not in use anyway so it safe to reset its data regardless
of its return.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
The original commit 8ebaf29927 ("net: http: dont timeout
on HTTP requests w/o body") was intended to handle a case
where an HTTP response had been retrieved from the server but
the HTTP parser couldn't meet the criteria for calling
"on_message_complete". For example, a POST to a REST API
where the server doesn't return anything but an HTTP
status code.
It was a really bad idea to check a semaphore count. There
is a lot of kernel logic built into semaphores and how the
count is adjusted. The assumption that the value is 0
after the k_sem_give() is incorrect. It's STILL 0 if
something is pending with a k_sem_take(). By the time
k_sem_give() is done executing the other thread has now
been kicked and the count is back to 0.
This caused the original check to always pass and in turn
breakage was noticed in the http_client sample.
Let's do this the right way by setting a flag when
on_message_complete is called and if that flag is not set
by the time we reach recv_cb, let's give back the semaphore
to avoid a timeout.
Jira: ZEP-2561
Signed-off-by: Michael Scott <michael.scott@linaro.org>
The HTTP header field pointers are saved for each HTTP request.
But the counter that saves the pointers was never reset to initial
value when the connection was dropped. This meant that the header
field values were only proper for first HTTP request.
Jira: ZEP-2463
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The server needs global enable/disable status instead of only being
able to enable or disable just the TLS server part.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If we have specified AF_UNSPEC when initializing application
server local address, then we try to bind to both IPv4 and IPv6
addresses. The old code did not honor the port number in this
case but used some random value for port.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If user has specified a specific local address, then honor that
and do not try to bind IPv4 context if only IPv6 is defined,
and vice versa for IPv6.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Zeroing-out all bytes from a connection structure when it's
unregistered ensures all state from a previous connection is gone and
can't be mistakenly reused.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
If either a remote or a local address were supplied to the
net_conn_register() function, the IP stack would proceed to copy
sizeof(struct sockaddr) bytes from the respective remote_addr
or local_addr pointers, regardless of the actual size of the storage
these pointers point to.
Use the proper size depending on the socket address family.
Coverity-ID: 173630
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
If CONFIG_NET_DEBUG_APP was defined, but neither NET_APP_SERVER nor
NET_APP_CLIENT, build failed due to net_app_cb() haven't beeen
defined. So, define it to empty in this case.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Setting just IPv4 address as was allowed before isn't enough for
real-world usage (e.g. accessing DNS and outside servers in general).
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
