Reworking the logic to reduce the amount of variables.
Introducing a generic struct to acces the common part of MLD queries,
instead of accessing part by part.
Also, returning NET_OK in case parsing went fine. We send an MLD report
anyway, so it's not a good idea to count the message as being dropped in
statistics.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Reworking the logic to reduce the amount of variables.
This part was heavier to change as it was not accessing the headers
directly but instead was read parts by parts.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Reworking the logic to reduce the amount of variables.
Also taking the opportunity to normalize drop messages.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
In nbr part, this is a useful information. Since net_icmpv6_input has
already parsed the icmpv6 header, let's get pass it, instead of
retrieving/parsing it again in various handler functions.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
And let's use net_ipv6_create, net_icmpv6_create, net_ipv6_finalize to
factorize the code better.
Removing useless setup_headers private function now.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
And let's use net_ipv6_create, net_icmpv6_create, net_ipv6_finalize to
factorize the code better.
De-clutter the code by reordering where src/dst are evaluated.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
And let's use net_ipv6_create, net_icmpv6_create, net_ipv6_finalize to
factorize the code better.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Unlike before, we allocate a new packet for the reply which is a
modified clone of the request.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This is meant to remove the need for macro NET_IPV6_HDR(), since we
don't know in future if accessing the header that way will be valid.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Use the new net_pkt API to proceed through IPv6 header and all the
extension header as well.
Use udp/tcp input functions relevantly, and call net_conn_input
afterwards.
Note: This commit temporarly disable IPv6 fragmentation support
in the code directly. Which support will be re-enabled afterwards.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This is pretty much the same as in ICMPv4. Actually, when it comes to
the ICMP header, it could probably be put in a common places for both
ICMPv4 and ICMPv6.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Extension headers are specific and use nexthdr attribute from net_pkt.
next_header_proto is the user protocol (if any) that might require
finalization too (calculating the checksum).
However, if there are extension header, we need to skip those and jump
to the position where the user protocol starts.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Also, store the actual next_hdr value and not it's position.
This permits to reduce net_pkt from some bytes.
Such field was unused until now, but it will be soon.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This API is meant to work with pre-allocated net_pkt.
It assumes net_pkt's buffer cursor is at the right position where to
create the IPv6 header. Once done, the cursor will be placed right
after the newly created IPv6 header.
Finalizing assumes the same.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Function names will be normalized then by the couple create/finalize.
This one only sets the checksum.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Verifying udp/tcp checksum should be done before calling this function.
Also, up to ipv4 and ipv6 to provide a pointer to their respective
header.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This will be the place where UDP header is parsed: its checksum verified
and src/dst ports grabbed.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
It's not anymore up to user to provide the pkt. Context will build the
packet according to its metadata and provided buffer and length.
It currently supports only IPv4 and UDP.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Unlike before, we allocate a new packet for the reply which is a
modified clone of the request.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This is meant to remove the need for macro NET_IPV4_HDR(), since we
don't know in future if accessing the header that way will be valid.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Function names will be normalized then by the couple create/finalize.
This one only sets the checksum.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
As before, such header is meant to be in a contiguous area (beginning
of the buffer, only 20 bytes)
Opportunistically chaning the function name to net_ipv4_input() (all
will be create/finalize/input).
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Newly received pkt can get their cursor intialized at net_recv_data()
(most of the time, drivers won't mangle with the content before calling
that function).
Right after l2 (net_if_recv_data()) parsing as well. L2s pull the
starting buffer after ll header. Instead of letting L2s updating the
cursor, it's simpler to reinitialize it directly after such parsing.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This will avoid new API's writing functions to modify the packet's
content. For instance while checking its checksum etc...
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This is the easiest piece to change using the new API, and can be used
as showing how this API can be used.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This API is meant to work with pre-allocated net_pkt.
It assumes net_pkt's buffer cursor is at the right position where to
create the UDP header. Once done, the cursor will be placed right after
the newly created UDP header.
Finalizing assumes the same.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This API is meant to work with pre-allocated net_pkt.
It assumes net_pkt's buffer cursor is at the right position where to
create the IPv4 header. Once done, the cursor will be placed right
after the newly created IPv4 header.
Finalizing assumes the same.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
These ones would support linearizing non-contiguous area, however
requiring a bit more complex type as an "accessor".
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Adding a cursor into net_pkt. This is used to read/write data in a much
simpler way, for pre-allocated buffers in net_pkt. This avoids API users
to deal with net_buf below directly.
However, to be used - as for the new allocators - it will require deep
net stack core and API changes.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
These struct net_pkt allocators will give the possibility to allocate at
once the net_pkt and the buffer associated with, taking care of the
header space and MTU relevantly.
This enables to use the variable length allocator from net_buf. However,
it is not yet the default and is set as experimental.
As it is provided in parallel to existing allocators, it has to keep a
slab per-direction and thus a pointer in net_pkt, as well as appdata,
appdatalen etc... Resulting in "bloating" net_pkt. This will be solved
when, finally, former allocators will be removed.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If the net_context functions are accessed from preemptive priority,
then we need to protect various internal resources.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Removed foreground command functionality from shell source files.
Removed associated example.
Removed enter/exit command functions from the Bluetooth example
Updated project config files.
Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
After receiving FIN, the TCP stack will send a FIN and start
a timer to track the reception of the associated ACK. In case this
ACK is never received then the context will be released
without calling the associated received callback which leads to
upper layers not being informed that the connection was closed.
This issue was observed when using sockets, the effect is
that in this case the socket would never be closed and stay
in limbo forever.
Signed-off-by: Léonard Bise <leonard.bise@gmail.com>
The "net iface" net-shell command printed "<unknown type>" for
OpenThread based technology. After this commit, the network
interface type is set to "OpenThread".
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The previous commit replaced the net_pkt element ref with an element
atomic_ref. CI tests turned up more places where ref was used directly.
This commit converts them to use the new element.
Signed-off-by: Daniel Glöckner <dg@emlix.com>
It has been observed that some network drivers, f.ex. the SAM E70 GMAC,
call net_pkt_unref from inside the interrupt that signals the successful
transmission of a packet. This conflicts with the net_pkt_unref call
made by ethernet_send after the packet has been given to the driver.
We fix this by using an atomic_t to hold the reference count as there
might be other, difficult to find cases of net_pkt_(un)ref being used
across threads and interrupts.
The name of the element has been changed from "ref" to "atomic_ref" to
cause a compile error when code still has not been converted to use the
atomic_* functions.
Fixes#12708
Signed-off-by: Daniel Glöckner <dg@emlix.com>
This commit introduces a concept of mesh-local IPv6 addresses. Such
addresses should only be used for mesh-local communication, therefore
should not be used to communicate with different subnets (i. e.
destinations outside the mesh).
As `addr_type` field already holds different kind of information
(whether address was created automatically/manually) it was not used in
this case.
Instead a mesh_local flag was added, so that we do not lose information
on how address was created. Address with such flag set will only be
selected as a source address automatically if the destination address
is within the same subnet it belongs to.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Each time a successfully TCP connection is done, the number of dropped
TCP packets increases by 2. This is happens because when receiving an
initial SYN packet, or an ACK packet following a SYN+ACK packet,
NET_DROP is returned even if there is no error.
Fix that by replacing the two corresponding "return NET_DROP" by
"net_pkt_unref(pkt)" followed by "return 0".
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Connecting to a non-open port causes connect() to hang forever.
This patch releases connect() to return error to the caller.
Signed-off-by: Björn Stenberg <bjorn@haxx.se>
Accepting broadcast echo request and replying to it could provide an
attack vector.
Fixes#12162
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The NET_LOG_LEVEL is enabled also when allocation debugging is
enabled but when net_pkt debugging is not. Thus we need to use
the CONFIG_NET_PKT_LOG_LEVEL when printing normal debug log
prints.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
net_frag_linearize() is just a wrapper for net_buf_linearize(). As
the latter was refactored to never return error, and instead just
return actual copied length, update the former and its usages too.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
No declar 'count',Enable CONFIG_NET_DEBUG_HTTP_CONN will build error.
Using http_monitor_count replace count.
Fixed#12329
Signed-off-by: Frank Li <lgl88911@163.com>
shell_fprintf() doesn't work in callback handlers.
To fix that, set shell state to SHELL_STATE_COMMAND before using it.
Fixed: #12347
Signed-off-by: Frank Li <lgl88911@163.com>
Introduced by commit id de78a7af28.
If the sum is 0xffff, a ~sum will give 0.
Fixes#12164
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The patch allows to enable logs for NET_RAW configuration.
For example using wpanusb currently breaks build with logging enabled.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
The slab2str function which is used in the debug log call is not defined
unless NET_LOG_PKT_LOG_LEVEL >= LOG_LEVEL_DEBUG.
It looks like this change was accidentally introduced in #11374.
Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
Fragmentation has nothing to do with 6lo. Up to the bearer to do so.
This change is required for futur serialization of 15.4 fragmentation.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
ll reserve is of no use as the l2 is allocating what it needs for
filling in its header.
This is another step forward to removing ll reserve concept.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The net-shell "net allocs" command should print network buffer
allocations even if network packet debugging is not enabled.
This is how it used to work earlier but the behaviour got lost
at some point. So user needs to set CONFIG_NET_DEBUG_NET_PKT_ALLOC
in order to see the buffer allocations. The option will be enabled
by default if network packet log level is set to DBG.
The reason for a separate option is that the network packet debug
logging prints just too much data and it is very difficult to
track allocations when that happens.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
All IPv4 destination address related drop reasons in one place.
This helps also to have one unique call of net_conn_input().
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
As for IPv4, net_conn_input() can be called at one place for udp/tcp.
It will anyway check if given protocol is enabled so no need to check
such support here.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
It was weird to pre-parse ICMPv6 headers in IPv6. Moreover parsing
failure of such header would not generate the right statistic.
Instead, centralizing all into net_icmpv6_input relevantly, and adapting
the test cases which were using that function. In RPL test, removing the
dummy dio test was simpler since dio is anyway tested later on.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If relevant configs are not enabled shell allocs command would print
wrong info:
"Enable CONFIG_NET_DEBUG_NET_PKT to see allocations"
CONFIG_NET_DEBUG_NET_PKT is obsolete and an undefined symbol, setting it
causes cmake to fail. This patch fixes this issue by printing up-to-date
information on how to enable allocs command
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
Just recalculate the chksum without resetting its value to 0, and test
if return value is 0.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The net_dhcpv4_stop() function stops the event listener for any IF_UP
events previously. In case multiple interfaces are used and optionally
being switched over, it could result in disabling dhcp unintentionally.
The callback is initialized at the init function and added/removed in
the start/stop function based on the interface list being empty
or not. (first added, last removed)
The event handler checks if the interface is in the list before acting
on it.
Signed-off-by: Vincent van der Locht <vincent@vlotech.nl>
In case "net_dhcpv4_stop(..) is called when the interface is
in NET_DHCPV4_RENEWING state, the address is not removed.
When deleting the address in the NET_DHCPV4_RENEWING state
means the status is always equal to the moment before _start
is called.
Signed-off-by: Vincent van der Locht <vincent@vlotech.nl>
Remove network specific default and max log level setting
and start to use the zephyr logging values for those.
Remove LOG_MODULE_REGISTER() from net_core.h and place the
calls into .c files. This is done in order to avoid weird
compiler errors in some cases and to make the code look similar
as other subsystems.
Fixes#11343Fixes#11659
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Removed printing command help from help handler. It is now
realized by the shell engine. This change saves a lot of flash
but still allows to print help in command handler with function
shell_help_print.
Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
Removing help "options" from shell API.
Currently SHELL_OPT macro is not used by users. What is more
commit: a89690d10f ignores possible options created in
command handler by the user. As a result they are not printed
in help message.
Second, currntly implemented "options" in command handlers options are
implemented without SHELL_OPT macro.
And last but not least this change will allow to implement
help handler in a way that user will not need to think about calling
functions printing help in a command handler.
Signed-off-by: Jakub Rzeszutko <jakub.rzeszutko@nordicsemi.no>
No need to store/reset/recompute the chksums, only compute it again and
if it's not 0: drop the packet.
RFC 1071:
"To check a checksum, the 1's complement sum is computed over the
same set of octets, including the checksum field. If the result
is all 1 bits (-0 in 1's complement arithmetic), the check succeeds."
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
IPv4, ICMPv4/6, UDP, TCP: all checksums are meant to be one's complement
on a calculated sum. Thus return one's complement already from the right
place instead of applying it in each and every place where
net_calc_chksum is called.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
1. Clarify message telling that the actual packet length fed by the
driver differs from what specified in IPv4 header, and that leads to
drop.
2. Debug log any dropped packets in general.
These changes come from the experience of developing a networking
driver, where figuring out why packets get dropped may require
quite a head-scratching.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
If we receive extra data at the end of the IP message, then
discard that data and accept the packet.
Fixes#11649
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Such sent flag is in a union in net_pkt, shared with a gptp flag.
Tweaking it when the family is not AF_INET or AF_INET6 will generate
corrupted gptp packets.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Now instead of such path:
net_if_send_data -> L2's send -> net_if tx_queue -> net_if_tx -> driver
net_if's send
It will be:
net_if_send_data -> net_if tx_queue -> net_if_tx -> L2's send -> driver
net_if's send
Only Ethernet is adapted, but 15.4 and bt will follow up.
All Ethernet drivers are made compatible with that new scheme also.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
As per RFC1112 sec 6.2 "A host group address must never be
placed in the source address field or anywhere in a source
route or record route option of an outgoing IP datagram."
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Networking stack sometimes try to find source address based
on destination address. If interface could not find best match
then it returns unspecified address (0.0.0.0). Host should not
send these packets.
IPv4 reply related issues fixed.
Fixes#11329
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
net_rpl_get_interface() function which returns always NULL is
defined if NET_RPL is not enabled. so remove deprecated tag to
this particular function. Otherwise it will cause unnecessary
compilation warnings.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
In earlier commit 15e7e3ea4 ("net: ip: Split debug prints into
smaller pieces"), the net_pkt debug prints were split to two
lines because of the argument count limitation in logging system.
As the logging subsystem increased the limit count in
commit 62d011549a ("logging: Support for up to 15 arguments in log
message") we can restore the original version as it is easier
to read.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Pass the promiscuous mode OFF event properly to device driver
instead of just toggling the network interface flag.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Flush the promiscuous queue after all the clients have turned
off promiscuous mode. This makes sure that we do not leave any
RX packets hanging on the queue and waste memory.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Couple of findings which were revealed after changing
LOG_MODULE_REGISTER macro:
- missing semicolons after LOG_MODULE_REGISTER()
- missing LOG_LEVEL defines
- other
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
Introduce new Kconfig option for selecting either slip or ethernet
connectivity to host.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Make sure that IPv4 specific functions are callable even if
IPv4 is not enabled. This allows use of IS_ENABLED() macro
in other parts of the system.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Make sure that IPv6 specific functions are callable even if
IPv6 is not enabled. This allows use of IS_ENABLED() macro
in other parts of the system.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
No need to evaluate what's the ll reserve size here as net if has a
function to do so.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If the destination IPv6 address is interface local scope multicast
address FF01::, then loopback those packets back to us as that is
the purpose of those addresses. They are to work same way as
localhost unicast address. See RFC 3513 ch 2.7 for details.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If IPv6 is disabled, then we can skip IPv6 checks and avoid
Coverity warnings. Same thing for IPv4.
Coverity-CID: 189506
Fixes#11100
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Unify the function naming for various network checking functions.
For example:
net_is_ipv6_addr_loopback() -> net_ipv6_is_addr_loopback()
net_is_my_ipv6_maddr() -> net_ipv6_is_my_maddr()
etc.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Make sure that ICMPv6 checksum is correct before continuing
processing the packet.
Fixes#10971
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If we receive an IPv6 packet with organisation scope multicast
address FF08:: then we must drop it as those addresses are
reserved for organisation network traffic only.
Fixes#10961
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If we receive an IPv6 packet with site scope multicast
address FF05:: then we must drop it as those addresses are
reserved for site network traffic only.
Fixes#10960
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If we receive an IPv6 packet with interface scope multicast
address FF01:: then we must drop it as those addresses are
reserved for local network traffic only.
Fixes#10959
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
For Bluetooth, the link address is set only after the Bluetooth
connection is established. Because of this, place the link address
check to net_if_up() because at that point the link address should
be set properly.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
There's a lot of code which assumes net_if_get_link_addr(iface)->addr
Forgetting to set it leads to deferred, spectacular crashes. It's
impractical to assert it on every usage. So, instead let's assert
it after call to driver->init(), as that is supposed to set it.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
We must drop packet that is received from outside and which has
IPv6 loopback address (::1) either as a destination address or
source address.
Fixes#10933
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
ICMPv4 checksum is not optional and thus cannot be zero. Hence, drop
packet with invalid zero ICMPv4 checksum.
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
If we receive an IPv4 that has broadcast destination address, then
properly handle it.
This means that for
* ICMPv4, if CONFIG_NET_ICMPV4_ACCEPT_BROADCAST is set (this is the
default value) and we receive echo-request then accept the packet.
Drop other ICMPv4 packets.
* TCP, drop the packet
* UDP, accept the packet if the destination address is the broadcast
address 255.255.255.255 or the subnet broadcast address.
Drop the packet if the packets broadcast address is not in our
configured subnet.
In sending side, make sure that we do not route broadcast address
IPv4 packets back to us. Also set Ethernet MAC destination address
properly if destination IPv4 address is broadcast one.
Fixes#10780
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add utility function that returns true if given IPv4 address is
a broadcast address. This will be used in later commits to check
received packet IPv4 source and destination addresses.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Remove extra ntohl() calls when checking IPv4 address against
a subnet address.
Convert also the IPv4 address to be const as the netmask related
functions do not change its value.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Cache the used transport protocol in net_pkt. This way we can
avoid traversing IP header to get the last protocol in network
packet. This is mostly an issue in IPv6 which can have a long
list of extension headers after IPv6 header and before the
transport protocol header.
Fixes#10853
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Wrong Kconfig template was used for max debug level which caused
the max level to be the default level (ERROR). This prevented
all debug prints from showing.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The maximum log level was using wrong template which caused
the max value to be ignored.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The CONFIG_NET_DEFAULT_LOG_LEVEL template entry was only partially
fixed earlier and some spaces were not there around "=".
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The connection index was printed incorrectly in debug print.
Coverity-CID: 188742
Coverity-CID: 188753
Fixes#10583#10574
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This patch fixes the compile error when CONFIG_NET_PKT_LOG_LEVEL
is LOG_LEVEL_DBG.
> subsys/net/ip/net_shell.c: In function ‘context_info’:
> subsys/net/ip/net_shell.c:2893:106: error: ‘struct net_buf_pool’
> has no member named ‘avail_count’
> subsys/net/ip/net_shell.c:2893:125: error: ‘struct net_buf_pool’
> has no member named ‘name’
In struct net_buf_pool, 'avail_count' and 'name' are depends on
CONFIG_NET_BUF_POOL_USAGE.
Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Check for NULL IPv6 addr values from net_if_ipv6_get_ll() in rpl.c
If NULL, print out an error statement stating that no proper IPv6
address was found
Coverity-CID: 188169
Fixes#10094.
Signed-off-by: Satya Bhattacharya <satyacube@gmail.com>
Recently, the wifi net offload driver has been asserting
as init_iface() was checking for api->send != NULL, even in
the case of NET_OFFLOAD
This patch suggests a fix to handle the NET_OFFLOAD case.
Signed-off-by: Gil Pitney <gil.pitney@linaro.org>
As the debugging print calls are async, all the strings that might
be overwritten must use log_strdup() which will create a copy
of the printable string.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Currently logging subsystem supports quite small number of function
parameters. So split some long functions into smaller pieces.
Hopefully this is just a temporary patch and we can support more
parameters to logging macros.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Instead of one global log level option and one on/off boolean
config option / module, this commit creates one log level option
for each module. This simplifies the logging as it is now possible
to enable different level of debugging output for each network
module individually.
The commit also converts the code to use the new logger
instead of the old sys_log.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Completely remove the last_sync_receipt_timeout time. It is not part of
the standard (see 802.1AS-2011, 10.2.11 for the complete list of
variables for this state machine). Additionally this extra variable was
never really initialized so the calculated duration made no sense.
Just start the timer based on the regular sync receipt timeout time
interval from the port data set.
Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
Under GNU C, sizeof(void) = 1. This commit merely makes it explicit u8.
Pointer arithmetics over void types is:
* A GNU C extension
* Not supported by Clang
* Illegal across all ISO C standards
See also: https://gcc.gnu.org/onlinedocs/gcc/Pointer-Arith.html
Signed-off-by: Mark Ruvald Pedersen <mped@oticon.com>
pkt properties should be set prior to routing.
If packet routing is turned on and the packet is
forwarded to an interface, the pkt properties like
ipv6_ext_len or ip_hdr_len will not be initialized.
If a UDP packet is forwarded to an 6lo interface,
it leads to incorrect calculation of UDP header
during UDP header compression (net_udp_get_hdr).
Fixes#10204
Signed-off-by: Johann Fischer <j.fischer@phytec.de>
If the neighbour does not exists, then the route to it cannot
be deleted so we can return error to caller in that case.
Coverity-CID: 188173
Fixes#10090
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
In net_route_add(), do not try to print route information if
route to neighbor is not found.
Coverity-CID: 188172
Fixes#10091
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Use the destination address to select the proper network interface
when binding. The default network interface cannot be used here
as then the packet might be sent to wrong network interface.
Fixes#9935
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
New shell implementation is on the way. For now old one and all
references are kept to be gradually replaced by new shell.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
The return of memset is never checked. This patch explicitly ignore
the return to avoid MISRA-C violations.
The only directory excluded directory was ext/* since it contains
only imported code.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
- Up to net_context to give the source port.
- net_udp_append is unused anywhere: let's remove it.
- left over macros on _raw versions removed as well.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
*_ll_src/*_ll_dst/*_ll_swap/*_ll_if were not self explanatory, ll
meaning "link layer" it's ambiguous what the names meant.
Changing to:
*_lladdr_src/*_lladdr_dst/*_lladdr_swap/*_lladdr_if to fix this.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The new "net ipv6" command which will print general IPv6 configuration
and information about autoconfigured IPv6 addresses.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The net_if_ipv6_prefix_get() function will return the proper prefix
for a given IPv6 address and network interface. This is used when
checking which source address should be returned to the caller.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Refactor IPv6 address lifetime timer setting in net_if_addr to support
longer lifetime than 24 days.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The ciaddr can be null in requesting state so do not try to print
it in that case.
Fixes#9575
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
NET_CONN_CB() functional macro hides the parameters a function takes
and its return type. In #8723, it's proposed to remove that macro
altogether. Until that proposal is reviewed, at least provide real
protype in code comments to help people who read/analyze the code.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
If a malformed packet with multiple HBHO is received by the Zephyr IP
stack it replies with ICMPv6 type 4 code 1: "Parameter problem
unrecognized Next Header type encountered". This ICMPv6 message has
wrong IPv6 payload length and ICMPv6 checksum.
RFC 8200 in chapter 4.1 states:
Each extension header should occur at most once, except for the
Destination Options header, which should occur at most twice (once
before a Routing header and once before the upper-layer header).
There are two possible solutions to the problem at hand:
1) Respond with ICMPv6 Parameter problem, in this case IPv6 length and
ICMPv6 checksum need to be fixed
2) Drop the malformed packet
This patch implements the easy solution - 2. Basically it changes the
code to drop the malformed packet instead of sending ICMPv6 type 4
code 1.
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
These were at most set, but never used. They appear to be artifacts
of importing code from the FNET stack.
Addresses: #9570
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
In TCP protocol, any packet is subject to retransmission if not
ACKed in expected time. Thus, any packet, including FIN (and SYN
for that matter) should be added to the retransmission queue.
In our case, despite its name, queue_fin() function didn't add
FIN packet to rexmit queue, so do that. Then, in
net_tcp_ack_received() which handles ACKs, make sure that we can
handle FIN packets: calculate its sequence number properly, don't
make adhoc adjustments to retransmission logic (it's handled
centrally in restart_timer() already), etc.
Fixes: #8188
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
If we run out of buffers and cannot create the TCP segment,
then handle it properly and do not access NULL pointer.
Coverity-CID: 187822
Fixes#9639
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If there is timeout when adding UDP data, then check this
condition and bail out by returning NULL as the packet is now
malformed.
Coverity-CID: 187825
Fixes#9636
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
1. Where we calculate max size, name variable (preprocessor define)
correspondingly.
2. Calling TCP/UDP an "app protocol" is original, use "next protocol"
terminology of IPv6.
3. As headers go as IP, then "next", order calculations that way too.
4. Add more comments.
Addresses: #8723
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
CONFIG_NET_OFFLOAD was defined in Kconfig of net/ip/l2/, but actually
used by the code in net/ip/.
Fixes: #8646
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Spurious TCP retries were observed using Wireshark while continuously
sending TCP packets at an interval faster than the initial RTO.
If the send list is empty and CONFIG_NET_TCP_TIME_WAIT_DELAY is used,
the retry timer will not be correctly stopped when receiving a valid
ACK. As a consequence, the timer might be running when a new packet is
queued, but the logics in net_tcp_queue_data() will not restart the
timer as it is already running. This will make the retry timer to expire
prematurely, potentially while sending packets.
The nested condition is merged into a single condition, allowing the
final else clause to be reached when a valid ACK is received.
Signed-off-by: Florian Vaussard <florian.vaussard@gmail.com>
The autoconfigured IPv6 addresses that are related to removed
prefix, need also removed.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If the IPv6 address expires, then it is marked as deprecated.
If a renewal is received in router advertisement, then the address
can be re-used again and is marked as preferred.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
No functionality changes. Just moved IPv6 fragment and related functions
to ipv6_fragment.c for better readability
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
No functionality changes. Just moved IPv6 MLD and related functions
to ipv6_mld.c for better readability.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
No functionality changes. Just moved IPv6 neighbor and related functions
to ipv6_nbr.c for better readability.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Each IPv6 neighbor entry had a k_delayed_work to be used as a timer to
send ND reachable message and waiting for the reply in order to get to
the neighbor details.
But k_delayed_work is not a small object (40 bytes). Thus reworking the
IPv6 ND reachable request timer by having one central k_delayed_work
and a timestamp in every IPv6 neighbor data entry properly handled at
every timeout.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Each IPv6 neighbor entry had a k_delayed_work to be used as a timer to
send NS message and waiting for the NS reply in order to get to the
neighbor details.
But k_delayed_work is not a small object (40 bytes). Thus reworking the
IPv6 send NS request timer by having one central k_delayed_work and
a timestamp in every IPv6 neighbor data entry properly handled at every
timeout.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Instead of having one delayed_work struct / IP address, use
only one delayed_work struct for lifetime timer. This saves
over 20 bytes / allocated address struct.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Refactor usage of net_sprint_ip*() where multiple
invocations are needed per single log call.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
The intention is to clean up the usage of net_sprint_ipv*_addr()
functions where 2 or 3 invocations are needed.
Thus, the default number of buffers is 3.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
irq_lock returns an unsigned int, though, several places was using
signed int. This commit fix this behaviour.
In order to avoid this error happens again, a coccinelle script was
added and can be used to check violations.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
Thise uses the new net_pkt_append_memset() function to generate the
required zero filling instead of calling net_pkt_append_u8() in loops.
Fixes#9287
Signed-off-by: Daniel Egger <daniel@eggers-club.de>
Some locations like DHCPv4 client create a prefilled packet by appending
new fragments in a loop with one byte each via net_pkt_append_u8() which
is wasteful and noisy. This patch adds the new functions
net_pkt_append_memset() which creates fragments as needed in the desired
size and initialises it to the specified value.
This change also adds a unittest for the new function.
Prerequisite for #9287
Signed-off-by: Daniel Egger <daniel@eggers-club.de>
Echo server crashes upon reception of fragmented packets. This
occurs when fragmentation is enabled with the default prj.conf
of echo server. The cause is that by default with logs disabled
net_sprint_ipv6_addr returns NULL.
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
The 'Network type' choice always defaulted to NET_RPL_L2_ANY, because
choices prefer the first default with a satisfied condition (this was
true even when Zephyr still had the prefer-later-defaults patch).
Swap the defaults so that NET_RPL_L2_IEEE802154 becomes the default if
NET_L2_IEEE802154 is enabled, as intended.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Instead of waiting forever for a network buffer, have a timeout
when allocating net_buf. This way we cannot left hanging for a
long time waiting for a buffer and possibly deadlock the system.
This commit only adds checks to core IP stack in subsys/net/ip
Fixes#7571
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
After it sends SYN_ACK, there is a case that the client sends the packet
with both ACK and RST bits are set, and this packet needs to be handled
if the packet is valid.
CLIENT SERVER
------ ------
|--------- SYN -------->|
|<------ SYN_ACK -------|
|------- ACK_RST ------>|
|--------- SYN -------->|
|<-------- ??? ---------|
This patch checks the RST bits even if other flags are set and process
the packet.
Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com>
IPv6 cleanup patch introduced a regression. Misunderstood the logic.
Do not drop the packet if packet does not have ND options, just skip.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Instead of reading or writing different icmpv4 header's individual
variables, better to read or write whole struct at a time. This
minimizes the calls to net_frag_read() or net_frag_write().
changes also removed slow and fast paths. Changes should optimize
the total flow.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Up until now, Zephyr has patched Kconfig to use the last 'default' with
a satisfied condition, instead of the first one. I'm not sure why the
patch was added (it predates Kconfiglib), but I suspect it's related to
Kconfig.defconfig files.
There are at least three problems with the patch:
1. It's inconsistent with how Kconfig works in other projects, which
might confuse newcomers.
2. Due to oversights, earlier 'range' properties are still preferred,
as well as earlier 'default' properties on choices.
In addition to being inconsistent, this makes it impossible to
override 'range' properties and choice 'default' properties if the
base definition of the symbol/choice already has 'range'/'default'
properties.
I've seen errors caused by the inconsistency, and I suspect there
are more.
3. A fork of Kconfiglib that adds the patch needs to be maintained.
Get rid of the patch and go back to standard Kconfig behavior, as
follows:
1. Include the Kconfig.defconfig files first instead of last in
Kconfig.zephyr.
2. Include boards/Kconfig and arch/<arch>/Kconfig first instead of
last in arch/Kconfig.
3. Include arch/<arch>/soc/*/Kconfig first instead of last in
arch/<arch>/Kconfig.
4. Swap a few other 'source's to preserve behavior for some scattered
symbols with multiple definitions.
Swap 'source's in some no-op cases too, where it might match the
intent.
5. Reverse the defaults on symbol definitions that have more than one
default.
Skip defaults that are mutually exclusive, e.g. where each default
has an 'if <some board>' condition. They are already safe.
6. Remove the prefer-later-defaults patch from Kconfiglib.
Testing was done with a Python script that lists all Kconfig
symbols/choices with multiple defaults, along with a whitelist of fixed
symbols. The script also verifies that there are no "unreachable"
defaults hidden by defaults without conditions
As an additional test, zephyr/.config was generated before and after the
change for several samples and checked to be identical (after sorting).
This commit includes some default-related cleanups as well:
- Simplify some symbol definitions, e.g. where a default has 'if FOO'
when the symbol already has 'depends on FOO'.
- Remove some redundant 'default ""' for string symbols. This is the
implicit default.
Piggyback fixes for swapped ranges on BT_L2CAP_RX_MTU and
BT_L2CAP_TX_MTU (caused by confusing inconsistency).
Piggyback some fixes for style nits too, e.g. unindented help texts.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
This net_buf leak happends when we are low on available net_buf
count. During TCP segment preparation we do allocate IP header
successfully, but we fail to allocate TCP header. In such case
pkt->frags is not NULL anymore (it contains IP header), but we
override it during TCP header allocation error path. This results
in net_buf containing IP header to never be deallocated, because
it does not belong to any net_pkt anymore.
Use net_pkt_frag_add() function to add tail for future net_pkt
deallocation, instead of assigning tail to pkt->frags pointer.
Fixes: c6407659f3 ("net: tcp: Add the frag back to caller allocated
net_pkt")
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
Instead of reading or writing different icmpv6 header's individual
variables, better to read or write whole struct at a time. This
minimizes the calls to net_frag_read() or net_frag_write().
changes also removed slow and fast paths. Changes should optimize
the total flow.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
IPv6 fragmentation splits the packet into two parts, one is header
and another is payload. Every time header is cloned and part of
payload is appended. At the end original header packet is not freed.
Causes memory leak.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Current implementation only considers IP header length while setting
appdata value on a cloned packet. It will give bogus value if original
packet contains extension headers and if extension headers are large
(i.e. more than one fragment). Only consider appdata length from the
original packet.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
The ethernet sending routine sent a corrupted ARP packet instead
of the actual IPv4 packet.
Fixes#9348
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
No need to inline the net_if_ipv6_addr_lookup_by_iface() function
as it is used multiple times in ipv6.c
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add a function which returns proper network interface to send either
IPv4 or IPv6 network packet to corresponding destination address.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add a function that will return the network interface that would
be used when sending a IPv6 network packet to specific IPv6 destination
address.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
For example for Bluetooth IPSP, it is not needed to join solicited
node multicast group address.
From https://tools.ietf.org/html/rfc7668#section-3.2.2 :
"""
There is no need for 6LN to join the solicited-node multicast address,
since 6LBR will know device addresses and hence link-local addresses
of all connected 6LNs.
"""
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The LLDP protocol defines 2 separate agents, the Transmitters and
the Receivers. For the context of Zephyr, we are only interested in
the Tx agent, thus we drop any LLDP frames received by Zephyr.
LLDP frames are basically composed by an ethernet header followed by
the LLDP Protocol Data Unit (LLDPDU). The LLDPDU is composed by several
TLVs, some of them being mandatory and some optional.
Our approach here is having TLVs fully configured from Kconfig, thus
having the entire LLDPDU constructed on build time.
The commit adds NET_ETH_PTYPE_LLDP definition and related handling.
If CONFIG_NET_LLDP is enabled then ethernet_context has a pointer to
the struct net_lldpdu that belongs to that ethernet interface. Also
when CONFIG_NET_LLDP is enabled, the LLDP state machine will start to
send packets when network interface is coming up.
Currently the LLDP state machine is just a k_delayed_work() sending the
LLDPDU at a given period (defined by CONFIG_NET_LLDP_TX_INTERVAL).
Fixes#3233
Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Make sure that string to integer conversions are checked properly
so that we are not trying to use the return value from strtol()
if the string is not a number.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This change moves the logic for linearize and append_bytes from
the net_pkt sources into the net_buf sources where it can be
made available to layers which to not depend on net_pkt. It also,
adds a new net_buf_skip() function which can be used to iterated
through a list of net_buf (freeing the buffers as it goes).
For the append_bytes function to be generic in nature, a net_buf
allocator callback was created. Callers of append_bytes pass in
the callback which determines where the resulting net_buf is
allocated from.
Also, the dst buffer in linearize is now cleared prior to copy
(this was an addition from the code moved from net_pkt).
In order to preserve existing callers, the original functions are
left in the net_pkt layer, but now merely act as wrappers.
Signed-off-by: Michael Scott <mike@foundries.io>
This commits adds new priority to traffic class mappings and allows
users to choose which mapping to use through menuconfig.
The new mappings are recommended in 802.1 (chapter 34.5) for
time-sensitive applications supporting the credit-based sharper
algorithm.
Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
The dummy L2 does not setup the link layer address. Do not check the
source and destination link layer addresses when routing packets
otherwise packet routing will not work when using a dummy L2.
Signed-off-by: Florian Vaussard <florian.vaussard@gmail.com>
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Allows ethernet drivers to provide vendor specific statistics
and details in the form of key-value pairs with the name of
the staticstic and its value.
The new string tables will be behind a new config:
NET_STATISTICS_ETHERNET_VENDOR
Suggested-by: Jukka Rissanen <jukka.rissanen@intel.com>
Signed-off-by: Jonathan Yong <jonathan.yong@intel.com>
- Remove redundant 'n' defaults. 'n' is the default value for bool
symbols.
This makes the auto-generated documentation clearer as well: You get
"implicitly defaults to n" instead of
"- n if <propagated dependencies>".
- Shorten
<type>
prompt "foo"
to
<type> "foo"
This works for all types, not just bool.
- Various formatting nits.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
There are too many individual requests for Qav related parameters. There
are more Qav parameters that need to be supported (and will be supported
soon - both on the GET and SET side). Handling it the way it was handled
so far would render the eth mgmt API dominated by Qav parameters. That
would make the file hard to read and understand.
Instead of that - use a single GET and SET requests for all Qav
parameters. This works by adding a separate enum with Qav request type
to the ethernet_qav_param struct.
Additionally this approach makes it much easier to document it all since
we now have just a single request and documentation comments in the
ethernet_qav_param struct.
Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
Print information about supported hardware capabilities for
ethernet interfaces when executing "net iface" command.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If ethernet mgmt is enabled and the driver supports priority queues,
show info about them including the Qav status
(enabled/disabled/unsupported).
Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
Add basic IPv4 Link Local support as described in RFC 3927.
Signed-off-by: Matthias Boesl <matthias.boesl@gmail.com>
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This reduces memory overhead on net_if_dhcpv4: 16 bytes vs 120 bytes
before. This might proove to be beneficial when there are many network
interface.
dhcpv4 ROM consumption is now 2132 bytes vs 4224 (many switches removed)
Fixes#8727
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Empty line before if (unless test uses previous line assignment) and
after } (unless it's another } ...)
Indentation fixed as well.
Fixes#8727
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
- Pre-assigned are always coming first.
- Always declare at the beginning of a code block
Fixes#8727
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
When an echo request is sent to an unknown neighbor, a Neighbor
Solicitation request is sent, however if the source address
cannot be determined the NS request is dropped but the pending
packet is not freed.
Signed-off-by: Léonard Bise <leonard.bise@gmail.com>
Move struct members around in networking code so that we avoid
unnecessary holes inside structs. No functionality changes by
this commit.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Reduces the logic as well as the ipv4 header checksum needs to be
computed either way.
Fixes#8720
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Use modular arithmetic in statistics prints so that wraparounds are
automatically handled.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Allow user to set the network interface into promiscuous mode
and then receive all the network packets that are received by
that interface.
Fixes#7595
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
User is able to set the network interface to promiscuous mode
and query the promisc mode status.
Note that currently this is only supported for ethernet bearer.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Current implementation does not handle large extension headers
(e.g HBHO). Which resulted network stack crashes or due to
misinterpretation of lengths network packets are dropped. Also
caused issues while preparing IPv6 packet (e.g. large HBHO header
with IPv6 fragmentation support).
Issues fixed and provided more unit tests.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
We might access NULL pointer if strchr() return value is not
checked properly.
Coverity-CID: 187073
Fixes#8993
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If Neighbor Advertisement cannot be sent, then print info about it.
Earlier we printed info when NA succeeded.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
A condition can be but on a prompt to make a symbol conditionally
user-assignable (visible).
Kconfig note:
'default's don't care whether the symbol is visible (has a prompt with a
satisfied condition) or not. 'if'/'depends on' just puts the same
condition on all the properties, disabling both the defaults and the
prompt at the same time. That might make it look like they're connected.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Bool symbols implicitly default to 'n'.
A 'default n' can make sense e.g. in a Kconfig.defconfig file, if you
want to override a 'default y' on the base definition of the symbol. It
isn't used like that on any of these symbols though.
Remove some 'default ""' properties on string symbols too.
Also make definitions more consistent by converting some
config FOO
<type>
prompt "foo"
definitions to a shorter form:
config FOO
<type> "foo"
This shorthand works for int/hex/string symbols too, not just for bool
symbols.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Having 24 parameters in a debug print is a bit extreme especially
as it is causing warning from new logger. Split the debug print
to three pieces each having 8 parameters which is more reasonable.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The code did not check if the icmpv4 header struct is already
pointing to net_buf or not. This meant that the code did not
set the ICMPv4 options and types correctly.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The net_addr_pton() did not check the number of ":" characters properly.
For example with following net-shell input
net ping fe80::210:2030:9b:d48efe80::210:2030:9b:d48e
the kernel panics.
Signed-off-by: Walter Xie <41377148@qq.com>
The problem is that net_if_call_timestamp_cb only checked if the
callback was registered for the PORT which invoked the whole action.
There is a possibility, that the callback will be registered, and packet
A will be passed to eth driver. Before the driver is finished with
packet A, network layer will start handling another packet (B) - so it
will unregister the callback for packet A and register it for B. After
that the network driver will finish processing packet A and invoke the
timestamp callback. The mechanism would then only check if a callback is
registered for the port of the driver and invoke the callback for the
packet that was registered earlier (so A instead of B).
This commit fixes that by storing info not only about the port but about
the packet too.
Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
The shell did not check if the gptp port (command argument) is numeric.
Add that check before executing the port info functions.
Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
There is no link address for Dummy network technology, so check
that before trying to print link address.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This implements LLMNR client from RFC 4795. This means that caller
is able to resolve DNS resource records using multicast DNS.
The LLMNR is used in Windows networks.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This "net gptp [port id]" command will give some extra info about
gPTP status if gPTP is enabled in config file.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The subsys/net/ directory is more logical place for L2 code instead
of ip/ directory. No functionality changes by this commit.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Defines a PTP clock driver that can be implemented in those network
interface drivers that provide gPTP support.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Julien Chevrier <julien.chevrier@intel.com>
This is actually the same as #7229 in which we missed this side of
conversion (only PCP to packet priority was implemented).
The conversion is actually the same both ways, thus it uses the map
added earlier.
Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
Allow creation of TX timestamp thread which will collect TX timestamp
information from device drivers. If the callback is registered, then
it will pass that timestamp information to the relevant party for
further processing. This support will be used by gPTP code in
subsequent commits.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Julien Chevrier <julien.chevrier@intel.com>
This patch changes the backoff factor to be random between zero and
2^be-1, as defined by the standard.
The previous implementation generated either a power-of-two number or
zero for bo_n, because it only overlaps a single bit with the random
number. The overlap is very rare, as in random, and results in the
backoff time being zero most of the time.
Signed-off-by: Franco Saworski <franco.saworski@blik.io>
'default false' should have been 'default n', though they happen to have
the same effect here, due to undefined Kconfig symbols ('false')
evaluating to 'n' in a boolean sense.
Kconfig bool symbols implicitly default to 'n', so remove the default
rather than fixing it.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Currently, we add TCP options only to SYN+ACK reply to peer's SYN
(i.e. passive open). For consistency, add them also when we send
SYN ourselves (active open). In both cases, we add just MSS option
currently.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Ethernet header is always filled in the first fragment of a packet,
so passing it as a separate function paramter is supefluous.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
There's an apparent typo in testing net_buf headroom. Also, after
adding VLAN header support, its size should be used too.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
There was no proper support to timeout an ARP requests which meant
that trying to resolve non-existent IP address left network packet
pending on ARP cache.
Fixes#8019
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
For debugging purposes it is useful to know which interface
the dropped packet was received.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The 'source' of subsys/net/ip/Kconfig in subsys/net/Kconfig is already
within an 'if NETWORKING' block, so the NETWORKING dependency in
subsys/net/ip/Kconfig is redundant.
Remove the redundant dependency.
This gets rid of a bunch of 'NETWORKING && NETWORKING' dependencies in
the auto-generated Kconfig docs.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Because per-interface statistics rely on interface pointer stored in a
net_pkt, it should not be unreferenced before stats are updated.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Functions for per-interface statistics collection used a pointer to a
packet that could've been deallocated in the net_conn callback function.
In result, application could crash when interface related to the packet
was referenced. To fix that, packet interface is stored earlier, so it
can be used instead for statistics collection.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
The IP stack drops any TCP segment which doesn't fit into our
receive window. However, we still must accept Zero Window Probe
segments, which are segments, usually with data length of 1, which
a peer sends to us after we stayed with zero window for some time.
In this case, we need to repeat an ACK with the old ack number.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Catch interface up/down events so that we can renew the
address if interface goes down and is then restored.
Fixes#7553
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add net_eth_carrier_on() and net_eth_carrier_off() functions that
can be called by ethernet device driver when it detects that carrier
is lost or found.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
It's rather confusing to not see current TCP state in any way (it
makes distinguishing different TCP contexts very hard). And nobody
can know/remember that it's printed with CONFIG_NET_DEBUG_TCP
defined. So, just make it be printed always (initially I thought
about printing just numeric value if CONFIG_NET_DEBUG_TCP isn't
defined, but why, if we can print symbolic name easily).
Also, add a hint that defining CONFIG_NET_DEBUG_TCP will still
print even more info (like unacked pkt list) - similarly to
similar helpful hints we have in other parts of net shell.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Let's set it by default when allocating net_pkt. A macro will avoid
ifdefs as well
CONFIG_NET_TX_DEFAULT_PRIORITY is always defined.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
When disabling an ethernet interface, only its cache entries need to be
cleared up and not the whole cache. This is meaninful in case there is
2+ ethernet interface instances.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Only the first one requires it. Actually drivers know that already and
handle the frags list correctly.
In case ethernet has to run along with 15.4 on the same SoC, this will
optimize things quite a bit knowing that biggest ethernet frame will be
forcefully split in as many 128 bytes frags as necessary.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The hop limit value in net_pkt was not updated according to
received IPv6 header.
Fixes#8182
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
IPv4 header's checksum was set when 'setup_ipv4_header', but in that
times IPv4 header's source ip and dest ip address haven't setted. So
it may be set an incorrect checksum.
Fixes: #7989
Signed-off-by: qianfan Zhao <qianfanguijin@163.com>
We init the net_tc tx/rx work queues during net_init() with a
call to init_rx_queues(). The L2/L3 and networking drivers have been
setup at this point. If we yield the current thread, we risk
a call to net_recv_data() which calls net_queue_rx() which calls
net_tc_submit_to_rx_queue() on an RX work queue which hasn't been
setup yet.
This manifests as a boot hang under seemingly random circumstances.
Signed-off-by: Michael Scott <michael@opensourcefoundries.com>
Security layer was tested only against CC2520, which does not mandate to
begin the session with a valid key. However, the crypto API tells it
must do so. And indeed, starting a session on mtls shim crypto device
will fail due to missing key. Thus moving the relevant code where it
should.
Reported-by: Johann Fischer <j.fischer@phytec.de>
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This one converts "raw" timeout value to use K_MSEC() macro
in order to make clear how long the timeout is.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Use of K_SECONDS() macro is more intuitive so use that instead of
plain MSEC_PER_SEC define.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Convert couple of MSEC() calls to K_MSEC() as the timeouts
when using MSEC() are just too long.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This patch fixes possible null pointer dereference in
net_stats_update_rpl_resets(...).
net_rpl_set_root_with_version(...) does not initialize instance->iface
and calls net_rpl_reset_dio_timer(...), which then calls
net_stats_update_rpl_resets(instance->iface).
fixes: #7862
Signed-off-by: Johann Fischer <j.fischer@phytec.de>
In switch statement break statement was missing causing IPv4 part to
execute even if the packet is IPv6. Also logical negation is wrong in
this context.
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
NET_ASSERT is useless here, as we already know that an error happened.
Use NET_ERR in order to print a more informative message.
Signed-off-by: Florian Vaussard <florian.vaussard@gmail.com>
When calling net_frag_read(), frag == NULL is an error only if pos is
not zero. It is thus incorrect to throw an error only if !frag, as
pos must also be checked to be not zero.
Signed-off-by: Florian Vaussard <florian.vaussard@gmail.com>
Current implementation hardcoded channel in received frame structure.
With this change channel can be retrieved from a OpenThread platform,
and put in the frame. In result procedures like Discovery can be
executed correctly. Change was tested with OpenThread Border Router.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
This commit contains bugfix for Joiner eui-64 handling and setting radio
in correct mode after calling thread stop.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
If a packet with source IP address and port same as the address of echo
server is received, it causes echo server to recursively send the packet
to itself, resulting in a crash and memory depletion. This commit fixes
the crash by dropping the packet.
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
L2 could take advantage of such hardware capability, when supported by
the device. This is also required for OpenThread.
Fixes#5714
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Previously, there was a boolean CONFIG_NET_TCP_TIME_WAIT setting
("master switch") and numeric CONFIG_NET_TCP_2MSL_TIME setting,
both named not ideally (there were both NET_TCP_TIME_WAIT and
CONFIG_NET_TCP_TIME_WAIT symbols in the source, with very different
meaning; "2MSL_TIME" was also a roundabout way to refer to
TIME_WAIT state time). In addition to that, some code was defining
adhoc, hardcoded duplicates for these settings.
CONFIG_NET_TCP_2MSL_TIME was also measured in seconds, giving
poor precision control for this resource-tying setting.
Instead, replace them all with the single
CONFIG_NET_TCP_TIME_WAIT_DELAY setting, measured in milliseconds.
The value of 0 means that TIME_WAIT state is skipped.
Fixes: #7459
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Similar to UDP, some drivers can make use of the following functions:
net_tcp_get_hdr()
net_tcp_set_hdr()
Let's expose them as <net/tcp.h> and change all internal references
to "tcp_internal.h".
Signed-off-by: Michael Scott <michael@opensourcefoundries.com>
sendto() is one and only caller of send_data(), a function of handful
of lines, and yet send_data() is located a hundred lines away from
it. Such "spaghetti functions" complicate review, debugging, and
refactoring of the IP stack.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
The IEEE 802.1Q chapter I.3 contains a proper network packet
priority to traffic class mapping. The original mapping was
clearly incorrect.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add functions that will return correct source IPv4 address
according to given destination address. This is done similar
way as for IPv6.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
With fragmentation disabled echo server responds to packet fragment with
ICMPv6 message Type: "Parameter Problem (4)", Code: "unrecognized Next
Header type encountered (1)". If a fragment with payload length 15 is
received in response sent by echo server IPv6 payload length and ICMPv6
checksum are wrong. This patch solves the issue by correcting payload
length.
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
The code was accessing network pkt before the value of the pkt
was checked.
Coverity-CID: 185394
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit fixes crash caused by double free from message sequence
fragmentation. When double free happens the call stack is:
0 reassembly_cancel
1 handle_fragment_hdr
2 net_ipv6_process_pkt
3 process_data
4 processing_data
5 net_rx
6 process_rx_packet
7 work_q_main
8 _thread_entry
So at first packet is unrefed in reassembly_cancel and then also in
processing_data.
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
After successful send, the packet is automatically cleared, so
trying to call print_send_info() on it leads to errors:
[net/pkt] [ERR] net_pkt_tcp_data: NULL fragment data!
[net/tcp] [ERR] net_tcp_get_hdr: NULL TCP header!
(if error logging enabled).
This change is similar to how print_send_info() is called in
existing send_reset() function of this source file.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Instead of always using default interface, use the IPv4 target
address to select the correct network interface when sending
IPv4 ping request.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If we have multiple network interfaces and we want to send
a IPv4 network packet to certain destination, then this new
helper can be used to figure out what network interface to use.
Note that this commit only adds support to select the correct network
interface according to destination IPv4 address. This does not enable
any automatic routing to happen.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This module exposes for now the net mgmt for WiFi: connect, disconnect
and scan commands.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Exposing connect, disconnect and scan for now.
In case the iface is an instance of a WiFi offload device, the way it
manages scanning, connecting and disconnecting will be specific to that
device (not the mgmt interface obviously). In such case the device will
have to export relevantly a dedicated bunch of function to serve the
mgmt interface in a generic way.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Wifi mgmt interface will be required by offloaded wifi device drivers
therefore when selecting this interface, make sure dependencies are
selected too.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Add empty WiFi network management functions that only return -ENETDOWN.
Define management handlers for scan, connect and disconnect requests,
again without any implementation nor parameters defined.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
First because nobody needs to know that besides net_mgmt core and
secondary to avoid possible circular dependancy on
net_mgmt.h/net_event.h.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Previously, with CONFIG_OFFLOAD enabled, net_if_up() and
net_if_down() were calling l2->enable, which didn't exist,
so was crashing.
Instead, if CONFIG_OFFLOAD is enabled, it will test for if the net_if is
of an offload type and react accordingly.
Signed-off-by: Gil Pitney <gil.pitney@linaro.org>
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Drivers will be directly contacted via net_if's offload attribute. No
need for a an extra layer as an L2.
Signed-off-by: Dario Pennisi <dario@iptronix.com>
Signed-off-by: Massimiliano Agneni <massimiliano.agneni@iptronix.com>
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
According to RFC 793 we should wait for FIN in FIN_WAIT_1 and
FIN_WAIT_2 states. Receiving ACK in FIN_WAIT_1 just moves us to
FIN_WAIT_2 state.
Right now TCP connection is never closed if FIN is not received
in FIN_WAIT_2 state. Fix that by keeping fin_timer active in
FIN_WAIT_2 state, but canceling it just after FIN is received.
Fixes: 124c067027 ("net: tcp: Cancel the fin_timer on FIN message
in FIN_WAIT1 state")
Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
- Removed OT_PLAT_RADIO_DEVICE_NAME
- Changed OpenThread binding to use NET_AP_IEEE802154_DEV_NAME
- Modified Kconfig chain to ensure NET_AP_IEEE802154_DEV_NAME
is enabled for both native 802.15.4 and OpenThread configurations
- Changed default setting of NET_L2_IEEE802154 in defconfig for mkw41z4.
- Fixed OpenThread api support code to use the state of mIsCcaEnabled
in the transmit frame to conditionally invoke radio_api->cc() on
transmits.
Signed-off-by: David Leach <david.leach@nxp.com>
- Debug code did not compile when level set to DEBUG.
- OpenThread has a define for BASE which conflicts with the BASE
field in MTB_Type defined in MKW41Z4.h. The change is consistent
with how it was handled in the KW41 port in OpenThread.
Signed-off-by: David Leach <david.leach@nxp.com>
- There is a mismatch when interfacing with external code where a
uint32_t is defined as a parameter and internal Zephyr code attempts
to use u32_t. If NewLib is used, the typedef for u32_t is
'unsigned int' which is not a portable match to uint32_t as
'unsigned int' is not a common size across architectures so gcc will
output a warning.
- The mcux flash code calls NXP supplied functions that expect a
uint32_t.
- openthread.c ot_state_changed_handler has a uint32_t flag as a
parameter.
Signed-off-by: David Leach <david.leach@nxp.com>
Make sure we are able to collect ethernet statistics and query
it via net management API.
Fixes#6899
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Missing newline on end of the file - this cause failure
while try to use menuconfig.
Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>
This will permit to tweak ethernet L2 and devices settings at runtime.
Currently, only devices settings are tweaked through this interface.
Fixes#6640
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
There will be additional source files coming in, so let's not clutter l2
root directory.
Reordering a bit l2 Kconfig: offload part come first, then the l2
drivers.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Function should be exposed if only vlan is enabled.
Also, changing vlan_setup's signature to stay consistent with device
driver API.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Instead of one global statistics, collect statistics information
separately for each network interface. This per interface statistics
collection is optional but turned on by default. It can be turned
off if needed, in which case only global statistics are collected.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Make sure that we return proper network statistics data if
someone asks it via network management interface.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If we have several network interfaces and not all of them are
VLAN enabled, then we might return wrong network interface to
the ethernet device driver when it asks one. To fix this, return
the first interface that has not enabled VLAN if the tag of the
network packet is unspecified.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Although very unlikely, make sure that if the net_recv_data() is
called with NULL network interface or packet, we recover that and
return error to the caller.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
User is able to take a network interface down or bring it up.
The command syntax is "net iface [up|down] [index]"
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add commands to add, remove or get information about VLANs
attached to network interfaces.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This allows creation of virtual lan (VLAN) networks. VLAN support is
only available for ethernet network technology.
Fixes#3234
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Some of the sanitycheck tests were having too small limit for
network buffers when compiling for sam_e70_xplained board.
Increase the buffer limits when testing this for this board.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
As the priority currently fits u8_t then use it instead of int
for priority value for queue and thread.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The array size checks were incorrect.
Coverity-CID: 183482
Coverity-CID: 183485
Fixes#6883Fixes#6885
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
SYN flood causes crash in RX thread due to NULL pointer access. After
the crash available RX memory is zero, hence echo server does not
respond to echo request.
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
Move core TCP functionality from net_context.c to tcp.c. Create empty
functions that the compiler can remove if TCP is not configured. As a
result remove TCP ifdefs from net_context.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
Similar to the socket connect() call, calling connect for a UDP
context needs to set both local and remote addresses and port
number. Fix this not to be exclusive for TCP.
Similarly, the remote destination can be a multicast address when
UDP is used.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
Queue a TCP FIN packet when needed if the socket was connected or
listening and where FIN wasn't already received.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
A new context cannot have callbacks set, as it was freshly created
in the beginning of the function. Thus the extra callback clearing
can be removed. This is a left-over from commit ce41d5f432.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
Ifdefs around TCP code can be removed since the TCP code will compile
to empty functions when not enabled.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
Refactor sendto() code so that destination address and its validity
is checked first, followed by offloading verification. Move context
and shutdown checks into TCP queueing function.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
With CONFIG_NET_TCP is not set, provide empty static inline
prototypes for all TCP functions available to other parts of
the IP stack.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
The "net stacks" command was printing TX or RX thread values so
that it was not possible to use the values in debugging easily.
Add traffic class value when printing the info so that it is
easy to see what TX or RX queue is doing.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add statistics for number of packets and bytes to each traffic
class. Print this information in net-shell.
Also make sure that we do not calculate total packet length many
times. So calculate network packet total length once and then use
that value instead of calculating it many times in a row.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
With this commit it is possible to add priority to sent or received
network packets. So user is able to send or receive higher priority
packets faster than lower level packets.
The traffic class support is activated by CONFIG_NET_TC_COUNT option.
The TC support uses work queues to separate the traffic. The
priority of the work queue thread specifies the ordering of the
network traffic. Each work queue thread handles traffic to one specific
work queue. Note that you should not enable traffic classes unless
you really need them by your application. Each TC thread needs
stack so this feature requires more memory.
It is possible to disable transmit traffic class support and keep the
receive traffic class support, or vice versa. If both RX and TX traffic
classes are enabled, then both will use the same number of queues
defined by CONFIG_NET_TC_COUNT option.
Fixes#6588
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Add context option support and implement PRIORITY option that
can be used to classify the network traffic to different trafic
classes according to said priority value.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Instead of always allocating both IPv6 and IPv4 address information
to every network interface, allow more fine grained address
configuration. So it is possible to have IPv6 or IPv4 only network
interfaces.
This commit introduces two new config options:
CONFIG_NET_IF_MAX_IPV4_COUNT and CONFIG_NET_IF_MAX_IPV6_COUNT
which tell how many IP address information structs are allocated
statically. At runtime when network interface is setup, it is then
possible to attach this IP address info struct to a specific
network interface. This can save considerable amount of memory
as the IP address information struct can be quite large (depends
on how many IP addresses user configures in the system).
Note that the value of CONFIG_NET_IF_MAX_IPV4_COUNT and
CONFIG_NET_IF_MAX_IPV6_COUNT should reflect the estimated number of
network interfaces in the system. So if if CONFIG_NET_IF_MAX_IPV6_COUNT
is set to 1 and there are two network interfaces that need IPv6
addresses, then the system will not be able to setup IPv6 addresses to
the second network interface in this case. This scenario might be
just fine if the second network interface is IPv4 only. The net_if.c
will print a warning during startup if mismatch about the counts and
the actual number of network interface is detected.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Move IP address settings from net_if to separate structs.
This is needed for VLAN support.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Previous way was too lazy. Now let's match exactly for the layer and the
layer code.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Make sure also to increase in_event if only inserting event info was
properly done.
Raising also range limit in Kconfig to a much higher value.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Create infrastructure that allows ethernet device driver to tell
if it supports network packet checksum offloading. This applies only
to IPv4, UDP or TCP checksums. The driver can enable/disable checksum
offloading separately for Tx and Rx network packets.
If the device (ethernet in this case) can calculate the network
packet checksum for IPv4, UDP or TCP, then do not calculate the
corresponding checksum by the stack itself.
Fixes#2987
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Memory leak occurs if neighbor table is full and echo request from an
unknown neighbor is received. Hence, on an attempt to send NS unref of
pending is not done, causing the memory leak.
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
This was reported by valgrind
Source and destination overlap in memcpy(0x80c18c0, 0x80c18c0, 6)
at 0x4035C3E: memcpy (vg_replace_strmem.c:1023)
by 0x80978CA: ethernet_send (ethernet.c:319)
by 0x8061B9B: net_if_send_data (net_if.c:281)
by 0x805F215: net_send_data (net_core.c:399)
by 0x8080998: send_mldv2_raw (ipv6.c:2858)
by 0x8080BA6: send_mldv2 (ipv6.c:2889)
by 0x8080D6C: net_ipv6_mld_join (ipv6.c:2915)
by 0x8061EF0: join_mcast_allnodes (net_if.c:438)
by 0x8062CA4: net_if_ipv6_addr_add (net_if.c:826)
by 0x8062296: net_if_start_dad (net_if.c:557)
by 0x8066667: net_if_up (net_if.c:2107)
by 0x8066AF0: net_if_post_init (net_if.c:2341)
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
As following commits need this functionality, create a function
which converts "01:02:ab:fe:34:dd" type hex strings to array of
bytes. Change the SLIP driver to use this new function.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Since this function is used on some drivers, and knowing these drivers
can be built for OpenThread, let's make it generic and out of the
802.15.4 L2 stack.
Fixes#5942
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If net-shell is enabled then it could try to access neighbor state
names. This would cause compile error as net_ipv6_nbr_state2str()
function is then missing.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit fixes incorrect Ethernet frame check sequence and ICMPv6
checksum caused by MTU set to zero in RA
Fixes#6342
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
We're missing a k_sem_give for contexts_lock in the
CONFIG_NET_OFFLOAD path of net_context_put().
This fixes a network hang which occurs after any http_close()
call when CONFIG_NET_OFFLOAD is enabled.
Signed-off-by: Michael Scott <michael@opensourcefoundries.com>
This commit fixes the crash of echo server from unsolicited RA with
reachable time set to 2147483648. The crash was in
net_if_ipv6_calc_reachable_time because such large value resulted in
modulus by zero due to integer overflow.
Fixes#6382
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
Assertions should only be used to check invariants. Things that may
change value in runtime are better left to proper checks.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
Assertions should only be used to check invariants. Things that may
change value in runtime are better left to proper checks.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
Assertions should only be used to check invariants. Things that may
change value in runtime are better left to proper checks.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
Assertions should only be used to check invariants. Things that may
change value in runtime are better left to proper checks.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
This doesn't appear to be used by anything in Zephyr. Remove it,
as it doesn't perform correct bounds checking.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
If net_icmpv6_get_na_hdr() returns NULL (which is possible with a
specially crafted packet), utility functions net_is_solicited(),
net_is_router(), and net_is_override() will attempt to read invalid
memory.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
Assertions should only be used to check invariants. Things that may
change value in runtime are better left to proper checks.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
Assertions should only be used to check invariants. Things that may
change value in runtime are better left to proper checks.
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
Pool size is no longer available so it is no use trying to print
its value. This change was introduced in commit dd09cbc1c4
("net: buf: Redesigned API with split data and meta-data")
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit fixes the crash of echo_server from overflow in ICMPv6 NS
source link-layer address option.
Fixes#6235
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
Instead of having K_FOREVER when allocating a packet in IPv4 ARP
and IPv6 ND, set a timeout so that we do not have a case where we
would wait net_buf forever.
Fixes#5484
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If IPSP channel is disconnected call net_if_carrier_down instead of
net_if_down since the later may still attempt to send packets while the
former just discard them immediatelly.
Fixes#5317
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This introduces net_if_carrier_down so the L2 driver can inform when it
has lost connectivity so all packets shall be flushed and the interface
should be put down.
Fixes#5317
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Fix Kconfig help sections and add spacing to be consistent across all
Kconfig file. In a previous run we missed a few.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
If context is bound to IPv6 unspecified addresss and some port
number, then unspecified address is passed in TCP reset packet
message preparation. Eventually packet dropped at the peer.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Zephyr doesn't have luxury to create re-transmit timer per packet. So
it has different methods to handle packets in queue. But re-sending
packets on valid ack messages causing issues.
E.g. A TCP node sent two packets (packet-1, packet-2). Peer replied
two ACKs (ACK-1 and ACK-2), and these two ACK's are at rx_thread
queue. Now ACK-1 is handled and reference of packet-1 is freed
from sent list. Then if condiftion (valid ACK and connection
state is ESTABLISHED) notices that, sent list is not empty.
Restart the timer, modify sent flag and resend packets in a
list. Here packet-2 is sent again, even though ACK-2 is already
received. Situation is worse if there are more packets in the
list.
So only start the re-transmit timer in-case queue is not empty. It
allows rx_thread to handle all incoming packets (in this e.g ACKs).
When the re-trasmit timer expires, it sends the packets which
are left in queue.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
In case of failed to get source address from the net packet,
release the assgined tcp backlog entry. Otherwise it will
never be freed.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
k_delayed_work_cancel(&context->tcp->fin_timer) called twice
immediately one after other.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Application should normally declare a bt_uuid with proper type and then
use bt_uuid_cmp.
Fixes#5162
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Redesign of the net_buf_simple and net_buf structs, where the data
payload portion is split to a separately allocated chunk of memory. In
practice this means that buf->__buf becomes a pointer from having just
been a marker (empty array) for where the payload begins right after
the meta-data.
Fixes#3283
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Default network interface is the first interface if there are multiple
interfaces exist. But this creates an issue when different parts of
the network subsystem wants to choose particular default interface.
At-least with this Kconfig option user can select default network
interface.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Unlinking of neighbor also needed after nbr_unref. Otherwise
neighbor id is still in use and can not be linked further.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
When a node receives DIO message from peer then node adds peer as
a neighbor (nbr with linklayer address). But when a node receives
DAO message from different peer (chances are peer selected
different route to reach this node), remove peer with previous
link layer address and add as a neighbor with new link layer address
with new route information. Now node can properly route packets to
peer from neighbor table or based on nexthop information from
routing table.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
When a node joins in DAG network, it chooses neighbor (node or border
router) as its parent. But if it receives DIO message from another
peer, it can only act as a neighbor, not as a parent. If peer rank
is better than current preferred parent rank then node will select
new peer as it's best parent.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
RPL prints lot of debug information which is difficult to track.
Minimized debugs in timer specific information and parsing of
DIO and DAO options. Also fixed alignment issues (no changes in
functionality)
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Do not even consider the push event if CONFIG_NET_MGMT_EVENT_INFO
enabled and info length is more than NET_EVENT_INFO_MAX_SIZE.
Print error message and ignore the event.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Current default value for NET_RPL_INIT_LINK_METRIC is 2, changing it
to 1.
e.g. NET_RPL_MIN_HOP_RANK_INC is 256 and NET_RPL_MC_ETX_DIVISOR is 256.
Rank calculation for nodes is
rank_increase = CONFIG_NET_RPL_INIT_LINK_METRIC *
NET_RPL_MC_ETX_DIVISOR;
Which gives 768 for first set of child nodes. It would be good if
CONFIG_NET_RPL_INIT_LINK_METRIC value is 1 and nodes ranks will be
245, 512, 768 based on the path they choose.
User can absolutely change their configuration to maintain proper ranks.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
When CONFIG_NET_RPL enabled, do not run DAD (duplicate address
detection) for global addresses. In RPL mesh network global addresses
for nodes are determined by prefix from Border Router. DAD is not
necessary in this case.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
If CONFIG_NET_MGMT_EVENT_INFO is enabled then provide mgmt info
about the route, which is added or deleted.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
If CONFIG_NET_MGMT_EVENT_INFO is enabled then provide mgmt info
about the neighbor, which is added or deleted.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Remove any routes with neighbor as a nexthop first and then remove
neighbor from neighbor table.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Provided separate event information structs based on events. This way
user will know what kind of information will be received to that
particular event.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
When net_ipv6_prepare_for_send() needs to route packets, it missed
updating of RPL header.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Doing neighbor discovery in RPL network is not necessary and
that can be disabled in RPL nodes. Unfortunately the border
router needs to have ND enabled as it has also non-RPL network
interfaces in use. So in this case, mark RPL node as always
reachable.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
As this is very specialized info which is not normally needed,
do not print it by default.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Introduce CONFIG_NET_ROUTING option that allows the IP stack
to route IPv6 packets between multiple network interfaces.
No support for IPv4 routing is implemented by this commit.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Removes variable shadowing another declared
previously but does not change anything
functionally.
Signed-off-by: Juan Manuel Torres Palma <j.m.torrespalma@gmail.com>
prepare_segment() returned NULL in case of any error, which then
net_context_send() translated into -EINVAL. That's highly confusing
though, because a common case of failure for prepare_segment() is
being unable to allocate data fragment(s) (for TCP header, etc.)
So, return output pkt by reference, and detailed error status as
a return value.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
A few lines earlier the code bails out in case len is 0. Checking for
buf->len < 1 is the same as checking for buf->len == 0. Since len is
guaranteed to be > 0 here the check len > buf->len implicitly checks
for buf->len == 0, i.e. the second test can be removed.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Add OpenThread to Zephyrs net stack as data link layer.
OpenThread requires to call process function when an event occurs.
This process function is called from cooperative thread.
Packet conversion and dispaching is implemented in openthread.c
as well as addresses forwarding.
Signed-off-by: Kamil Sroka <kamil.sroka@nordicsemi.no>
The meaning of this address type is the same as NET_ADDR_MANUAL,
but with a provision that DHCP can override such an address.
It's intended for the usecase when there's a default static
configuration for when DHCP is not available, but DHCP should
override it.
Before going to add another address type, there was an attempt
to repurpose TENTATIVE address state, but it doesn't work as
expected, as indeed, all existing address types/states already
have clearly semantics, and it makes sense to just another
address type to avoid confusion and unexpected behavior.
Fixes: #5696
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Actually set Zephyr's default DNS server based on the corresponding
DHCP option received. This makes DHCP-based setup Zephyr complete:
now it's possible to connect Zephyr DHCP-enabled system to a typical
router, and it will fully auto-configure to access Internet.
This initial implementation uses just first DNS server address as
returned in DHCP message, it may need to be extended in the future
based on the need.
Signed-off-by: John Andersen <john.s.andersen@intel.com>
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
The offset of the IP header in a received packet depends on the L2
header size. For Ethernet this is 14 bytes which puts the u32 IPv4
addresses on a non-u32 byte boundary. This causes chips that don't
support unaligned access (like the Cortex-M0) to fault.
The fixes in this patch are enough to ping the board and run the
http_server sample.
Signed-off-by: Michael Hope <mlhx@google.com>
For some reason, ieee802154_verify_channel had a device parameter
instead of an iface like all the others.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
It will be up to the user to configure a valid channel, through
net_mgmt, and call net_if_up() in order to get the device up.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Depending on device's band, the upper channel limit can vary a lot in
Sub-Ghz. Thus verifying it directly in L2 before requesting it to the
device.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Sub-Ghz bands have different limit of channels. 10, or more than a
thousand is actually possible. Thus the device needs to expose such
limit to the L2 which is unaware of frequency band logic. L2 will
then allow user to select a proper channel.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This field is set and maintained, but not actually used for anything.
The only purpose for it would be to validate ACK numbers from peer,
but such a validation is now implemented by using send_seq field
directly.
Fixes: #4653
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Case #1: If ACK received and our retransmit (i.e. unacked) queue is
empty, it's error. It's incorrect because TCP requires ACK to set for
every packet of established connection. For example, if we didn't
send anything to peer, but it sends us new data, it will reuse the
older ack number. It doesn't acknowledge anything new on our side,
but it's not an error in any way.
Case #2: If retransmit queue is only partially acknowledged, it's an
error. Consider that we have 2 packets in the queue, with sequence
numbers (inclusive) 100-199 and 200-399. There's nothing wrong if
we receive ACK with number 200 - it just acknowledges first packet,
we can remove and finish processing. Second packet remains in the
queue to be acknowledged later.
Fixes: #5504
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Per RFC 793:
A new acknowledgment (called an "acceptable ack"), is one for which
the inequality below holds:
SND.UNA < SEG.ACK =< SND.NXT
If acknowledgement is received for sequence number which wasn't yet
sent, log an error and ignore it.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
The ICMPv4 handler needs to unref the received echo reply packet
because we are returning NET_OK to caller. Similar change was done
for IPv6 earlier.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
When testing ping6 with net shell, it was noticed that after some
sucessive calls the applications stopped to handle rx packets.
Analyzing other icmpv6 register callbacks it was verified that is
necessary to unref packets before returning NET_OK.
Signed-off-by: Pedro Martucci <pedropaulomartucci@gmail.com>
We shouldn't limit the amount of data appended to RX packets based on
the max send size of TX packets. Skip this check for packets in the
RX slab.
Signed-off-by: Michael Scott <michael@opensourcefoundries.com>
Commit 753daa6 ("net: pkt: Compute TX payload data length")
removed the default packet setup on incoming packets when they
belong to the rx_pkt pool.
Let's restore this behavior, as MBEDTLS processing in net_app library
needs to use packet family to determine IP header length on
incoming packets.
NOTE: A future cleanup patch could set the IP header length based
on the context IP family. However, there are many places in the code
where this is being set, so care should be taken.
Signed-off-by: Michael Scott <michael@opensourcefoundries.com>
Right now in FIN_WAIT1 state, if we receive FIN+ACK message, then
tcp state changed to FIN_WAIT2 on ACK flag and immediately on FIN
flag state changed to TIME_WAIT. Then final ACK is prepared and sent
(in queue at-least) to peer. Again immediately state changed to
TCP_CLOSED, where context is freed. net_context_put frees context
and releases tcp connection. Final ACK packet which is in queue
is dropped.
As a side effect of freed ACK packet, peer device keep on sending
FIN+ACK messages (that's why we see a lot of "TCP spurious
retransimission" messages in wireshark). As a result
of context free (respective connection handler also removed), we see
lot of packets dropped at connection input handler and replying with
ICMP error messages (destination unreachable).
To fix this issue, timewait timer support is required. When tcp
connection state changed to TIMEWAIT state, it should wait until
TIMEWAIT_TIMETOUT before changing state to TCP_CLOSED. It's
appropriate to close the tcp connection after timewait timer expiry.
Note: Right now timeout value is constant (250ms). But it should
be 2 * MSL (Maximum segment lifetime).
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
fin_timer will be started after sending FIN to peer. After successful
reception of FIN+ACK message in FIN_WAIT1 state, fin_timer should be
cancelled.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Of these, only struct net_ipv6_nbr_data::send_ns is a descriptive
change:
send_ns is used for timing Neighbor Solicitations in general, not
just for DAD.
The rest are typo/grammar fixes.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
This will avoid exposing IEEE 802.15.4 Zephyr's L2 private context data
to unrelevant places.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
L2 specific data and IEEE 802154 net mgmt interface are not related.
Plus, application may use the net mgmt part, not the L2 one. So let's
split the content in relevant headers.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
IPv6 mcast addr to MAC mcast conversion was factored out to
subsys/net/ip/l2/ethernet.c for reuse by other drivers.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Empty CMakeLists.txt in l2 and l2/ieee802154 deserved to get filled-in
relevantly, instead of centralizing everything in ip/ location.
Also making sure lines don't get over 80 chars.
Also, no need of linking against mbetls unless net shell is enabled.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
https://tools.ietf.org/html/rfc4862#section-5.4.2 :
"""
Before sending a Neighbor Solicitation, an interface MUST join the
all-nodes multicast address and the solicited-node multicast address
of the tentative address.
"""
So, joining should happen before sending DAD packets, and it should
happen for each unicast address added. This is achieved by joining
from net_if_ipv6_addr_add() call. Note that we already leave
solicited-node group from net_if_ipv6_addr_rm(). In particular, we
leave it if DAD fails (as that function is called in this case).
Fixes#5282.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
The reachable calculation for ND is using fractions combined with
integers and getting rounded to very small results (1ms or 0ms).
Let's split up the fraction into it's numerator and denominator
and perform the math in a better way to get the correct results.
Signed-off-by: Michael Scott <michael@opensourcefoundries.com>
The maximum data length that can be appended using net_pkt_append()
should be set to TCP send_mss only if it is smaller than allowed
payload length in net_pkt.
Signed-off-by: Vakul Garg <vakul.garg@nxp.com>
For calculating amount of payload data that can be added in a packet,
we need to subtract IPv6 or IPv4 header lengths from MTU.
Signed-off-by: Vakul Garg <vakul.garg@nxp.com>
When net debugging is enabled, the count variable is initialized to -1.
This may cause division by zero if there is only one fragment in pkt.
Solve this by setting the count to 0 and checking the value before the
print at the end of the function.
Successfully tested on STM32F407 SoC.
Signed-off-by: Ding Tao <miyatsu@qq.com>
Compute the length of the TX payload that is transported in one
IPv4 or IPv6 datagram taking into account UDP, ICMP or TCP
headers in addition to any IPv6 extension headers added by RPL.
The TCP implementation in Zephyr is known to currently carry at
maximum 8 bytes of options. If the protocol is not known to the
stack, assume that the application handles any protocol headers
as well as the data. Also, if the net_pkt does not have a
context associated, length check on the data is omitted when
appending.
Although payload length is calculated also for TCP, the TCP MSS
value is used as before.
Define IPv4 minimum MTU as 576 octets, See RFC 791, Sections 3.1.
and 3.2.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
- Renaming NET_L2_RAW_CHANNEL to NET_RAW_MODE
- Create a generic IEEE 802.15.4 raw mode for drivers
- Modify the IEEE 802.15.4 drivers so it passes the packet unmodified,
up to code using that mode to apply the necessary changes on the
received net_pkt according to their needs
- Modify wpanusb/wpan_serial relevantly
Fixes#5004
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Previously, the connection will be reset easily due to a forged TCP
reset with a random sequence number.
As described in RFC793 p.69, we should check if the sequence number
falls into the receiver window at first.
Signed-off-by: Aska Wu <aska.wu@linaro.org>
Add in6addr_any and in6addr_loopback which are defined in RFC2553 Basic
Socket Interface Extensions for IPv6.
Signed-off-by: Aska Wu <aska.wu@linaro.org>
Previously, if passive close is peformed, the net context is released
after FIN is received and FIN,ACK is sent. The following last ack from
the peer will be treated as an improper packet, RST is sent to the peer.
This patch refines tcp_established() by centralizing the tcp state
transition and releases the net context only if NET_TCP_CLOSED is
reached.
Besides, the logic that releases the net pkt without appdata (i.e. ACK
or FIN) is moved from packet_received() to tcp_established(). This makes
packet_received() less dependent on the protocol and make the usage of
net pkt more clear in tcp_established().
Fixes: #4901
Signed-off-by: Aska Wu <aska.wu@linaro.org>
If we cannot send a DHCP message, then unref the net_pkt
in order to avoid a buffer leak. Earlier we tried to
unref NULL net_pkt which is not correct.
Signed-off-by: june li <junelizh@foxmail.com>
The original fragment chain of incoming packet will be lost and leaked
in case of early error, add frag back to packet and
let the caller do unref.
Fixes#4323
Signed-off-by: june li <junelizh@foxmail.com>
No need to do any IPv6 neighbor checks if the packet is routed back
to us by loopback driver.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If there is loopback interface, then let it handle all local
traffic. Loopback interface is only needed for test applications.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If the packet is too short, the TCP header pointer might be
NULL. In this case we just need to bail out.
Coverity-CID: 178787
Fixes#4787
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
802.15.4, as other radio tech, works in little endian on network level.
To keeps things simple, the inner context per-interface, stores the
extended address that way. But it can be confusing in shell then, so
let's work handle these addreses through EUI-64 format there.
Fixes#4936
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The ping command was not checking if the user gave target
host as a parameter. This would lead to NULL pointer access.
Fixes#4827
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If we were asked to add 10KB to a packet, adding it won't help -
such packet won't be even sent by hardware on our side, and if
it is, it will be dropped by receiving side. So, make sure we
never add more data than MTU as set for the owning interface.
This actually gets a bit tricky, because we need also to account
for protocol header space. Typically, when net_pkt_append() is
called, protocol headers aren't even added to packet yet (they
are added in net_context_send() currently), so we have little
choice than to assume the standard header length, without any
extensions.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
When sending a packet with AR flag set, the ACK frame that should be
replied to it must holp the same sequence number, so let's verify this
properly.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
There will be place where validating only this part of the frame will be
necessary. This will avoid to run the little bit heavier
ieee802154_validate_frame().
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Introducing CMake is an important step in a larger effort to make
Zephyr easy to use for application developers working on different
platforms with different development environment needs.
Simplified, this change retains Kconfig as-is, and replaces all
Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild
offers is replaced by a set of CMake extentions. These extentions have
either provided simple one-to-one translations of KBuild features or
introduced new concepts that replace KBuild concepts.
This is a breaking change for existing test infrastructure and build
scripts that are maintained out-of-tree. But for FW itself, no porting
should be necessary.
For users that just want to continue their work with minimal
disruption the following should suffice:
Install CMake 3.8.2+
Port any out-of-tree Makefiles to CMake.
Learn the absolute minimum about the new command line interface:
$ cd samples/hello_world
$ mkdir build && cd build
$ cmake -DBOARD=nrf52_pca10040 ..
$ cd build
$ make
PR: zephyrproject-rtos#4692
docs: http://docs.zephyrproject.org/getting_started/getting_started.html
Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no>
Add a generic function for TCP option parsing. So far we're
interested only in MSS option value, so that's what it handles.
Use it to parse MSS value in net_context incoming SYN packet
handler.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Calculates full TCP header length (with options). Macro introduced
for reuse, to avoid "magic formula". (E.g., it would be needed to
parse TCP options).
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
MSS is Maximum Segment Size (data payload) of TCP. In SYN packets,
each side of the connection shares an MSS it wants to use (receive)
via the corresponding TCP option. If the option is not available,
the RFC mandates use of the value 536.
This patch handles storage of the send MSS (in the TCP structure,
in TCP backlog), with follow up patch handling actual parsing it
from the SYN TCP options.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
The commit 971da9d0 ("net: pkt: adjust_offset: Simplify and optimize
code") changed the adjust_offset() function but left the error print
intact. This print is now invoked even if there is no error which
looks bad in debug prints.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The expire function can call net_context_unref() which tries to
get a semaphore with K_FOREVER. This is not allowed in interrupt
context. To overcome this, run the expire functionality from
system work queue instead.
Fixes#4683
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
An edge condition was handled in a special way, even though the main
condition covered it well. More code, more jumps == slower code,
bigger binaries.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Create http library that uses net-app instead of net_context
directly. The old HTTP API is deprecated.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The code parsing received net pkt to get source or destination
sockaddr repeats multiple times in net_context.c.
Eliminate the duplication by net_pkt_get_src_addr() and
net_pkt_get_dst_addr() which can handle different internet protocol
(i.e. ipv4 or ipv6) and transport protocol (i.e. tcp or udp)
Fixes: #4421
Signed-off-by: Aska Wu <aska.wu@linaro.org>
Rename net_pkt_get_src_addr() to net_pkt_get_addr() and make it able to
handle source or destination address.
Signed-off-by: Aska Wu <aska.wu@linaro.org>
Previous max range value for RTO was 2 seconds, increase to 60 seconds
as setting larger values can be useful when debugging retransmission
issues on slow networks.
Signed-off-by: Ricardo Salveti <ricardo@opensourcefoundries.com>
Add option to set initial Retransmission Timeout value. The value is
different from NET_TCP_ACK_TIMEOUT since latter affects TCP states
timeout when waiting for ACK for example.
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
The call to net_context_recv() with timeout returned -ETIMEDOUT
even when data was returned properly and there was no timeout.
Fixes#4565
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
In bind_default(), a local variable is passed to find_available_port().
However, the port number is unpredictable as it's not initialized and
will be used directly if not zero. This will lead to problems if the
port number is already used.
This patch makes find_available_port() always returns an available port
regardless of the port number in the sockaddr parameter.
Signed-off-by: Aska Wu <aska.wu@linaro.org>
This rework commit 77b8f5c1f6
Comparing it to BT IPSP is a the wrong comparison: BT IPSP does specify
6lo/ipv6 for it to work. Whereas 802.15.4 does not.
Instead of selecting 6lo from 802.15.4's Kconfig, let's do the reverse
way. If the user enabled 802.15.4 and IPv6 as well (to which 6lo
depends on), then 6lo is enabled by default as using IPv6 on 15.4
without it does not make much sense.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Oftentimes, 15.4 PAN IDs are specified in hex. For example, that's
how Zephyr config specifies the default value. So, print them also
in hex, to avoid confusion.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
There were decrements of TCP sequence numbers, inherited from FNET
stack implementation, as was used as an initial base. RFC793 does
not specify conditions for decrementing sequence numbers, so such
decrements are an artifact of FNET implementation. In Zephyr code,
we had to compensate for these decrements by extra increments
(including an increment-by-2). So, remove decrements and associated
extra increments to simplify the code.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
If we receive a neighbor solicitation which does not have any
options, then there is no need to assert this condition as that
is a perfectly valid use case.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If IEEE 802.15.4 reassembly function ieee802154_reassemble() returns
anything other than NET_CONTINUE, then drop that packet. Earlier
it only dropped the packet if NET_DROP was returned but the reassembly
might also return NET_OK. In that case the pkt is freed already and
pkt->frags pointer is NULL. This caused NULL pointer access in L2 when
packet was received.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
This is similar to how few commands already behave if they can
provide additional info to the user if particular config options
are enabled.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
net_pkt_tcp_data() and net_pkt_udp_data() simply returns the start
address of the header. However the header may span over multiple
fragments, unexpected data or memory corruption might happen when
reading or writing to the pointer directly.
Use net_tcp_get_hdr() and net_udp_get_hdr() instead.
Signed-off-by: Aska Wu <aska.wu@linaro.org>
The net_tcp_get/set_hdr() and net_udp_get/set_hdr() documentation
was not clear in corresponding header file. Clarify how the return
value of the function is supposed to be used.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
udp.h is out-of-date as it accesses net buf directly. In 3604c391, it
has been replaced by net/udp.h and udp_internal.h
Signed-off-by: Aska Wu <aska.wu@linaro.org>
Previously net_pkt.h, defined macros NET_PKT_TX_SLAB_DEFINE,
NET_PKT_DATA_POOL_DEFINE, but advertised them as intended for
"user specified data". However, net_pkt.c effectively used the
same parameters for slabs/pools, but this wasn't obvious due
to extra config param redirection. So, make following changes:
1. Rename NET_PKT_TX_SLAB_DEFINE() to NET_PKT_SLAB_DEFINE()
as nothing in its definition is TX-specific.
2. Remove extra indirection for config params, and use
NET_PKT_SLAB_DEFINE and NET_PKT_DATA_POOL_DEFINE to define
system pools.
3. Update docstrings for NET_PKT_SLAB_DEFINE and
NET_PKT_DATA_POOL_DEFINE.
Overall, this change removes vail of magic in the definition of
system pkt slabs/pools, making obvious the fact that any packet
slabs/pools - whether default system or additional, custom - are
defined in exactly the same manner (and thus work in the same manner
too).
Fixes#4327
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
When hexdumping the packet, print also information if we
received / transmitted packet. Also print information if the
hexdump is before compression or not.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Explicitly note that while these functions return pointers to
headers, the headers themselves may be fragmented into different
data fragments. 1a2f24f920 is an example where this might have
been overlooked.
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
When source address is unspecified then SAC is 1 and SAM is 00.
Uncompression does not process because context based compression
is not enabled.
Special case (SAC:1 and SAM:00) should be handled without context
based compression support.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Add system workqueue information prints to "net stacks" command.
This helps debugging when figuring out which stack is running out
of space.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Enhance existing "net app" command so that it can be
used to show information about multiple connections.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Such option should be use carefully. Printing out in/out packets is
extremely verbose.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If the pkt is corrupted and the offset would be larger than
the actual packet length, then print information about that and
drop the packet.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
User can configure hostname of the device in Kconfig. This can
be used by mDNS responder to answer <hostname>.local queries.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
It's possible to get number of free pkts/buffers with just
CONFIG_NET_BUF_POOL_USAGE, whereas CONFIG_NET_DEBUG_NET_PKT
depends on CONFIG_NET_LOG and adds quite a bunch of other
overhead. Also, give a hint that this option should be enabled
to get free buffer numbers.
Additionally, use unambiguous "Total" wording to represend the
maximum capacity of data structures, instead of previous "Count".
"Count" (or at least counter) is intuitively something which can
change, so not seeing any other numbers, it's very easy to assume
that it's actually number of free buffers (because that's the
information a user may be interested in in many cases).
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
If the caller has passed net_pkt to prepare_segment(), then
it is caller responsibility to unref it in a case of error.
Fixes#4292
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Some chips are smart enough to handle the ACK request flag on
transmitted frames, so it's unneccessary for the L2 to wait for it.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This is both required in L2's radio part as well as it might be useful
on some ieee802154 radio drivers.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
These are now fully replaced by set_filter() thus removing their usage
by the L2 layer.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If the hw supports filtering, L2 will apply the ieee address, short
address or PAN ID filters.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Using radio's get_capabilities, it is possible to know if the driver can
get CSMA work handed-over.
For now, up to device drivers to use
CONFIG_NET_L2_IEEE802154_RADIO_CSMA_CA_* parameters.
Let's see if it will be interesting at some point to enable runtime
modification of these parameters.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Instead of hard coded 1280 bytes MSS, use the MTU of the link
for MSS. The minimal MSS is still 1280 which is mandated by
IPv6 RFC.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Adding net_mgmt_event_notify_with_info() which lets the event notifier
to pass dedicated data along with the event. The size of data that can
be passed must be limited to the biggest data passed (which will be
currently IPv6 + prefix).
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
802.15.4 IP-based networking requires 6LoWPAN layer and won't work
correctly without it. So, if NET_L2_IEEE802154 is select,
automatically select NET_6LO. This is similar to what BLE L2
does (NET_L2_BT causes selection of NET_6LO).
Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
When the net-shell needs to send something to network interface,
it will check if the target address is found in neighbor cache and
then use that network interface. If the address is not found in nbr
cache, then the default interface is used.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Some our Zephyr tools don't like seeing UTF-8 characters, as reported in
issue #4131) so a quick scan and replace for UTF-8 characters in .rst,
.h, and Kconfig files using "file --mime-encoding" (excluding the /ext
folders) finds these files to tweak.
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
This patch makes net_context_sendto() work independently without calling
net_context_connect() first. It will bind default address and port if
necessary.
Also, since receive callback should be provided before sending data in
order to receive the response, bind default address and port to prevent
providing an unbound address and port to net_conn_register().
Signed-off-by: Aska Wu <aska.wu@linaro.org>
Introduce net_pkt_get_src_addr() as a helper function to get the source
address and port from the packet header.
Signed-off-by: Aska Wu <aska.wu@linaro.org>
Michael Hope
