If network interface goes operative down, then re-join user defined
IPv4 multicast groups that where joined earlier when the interface comes
up again. If user takes the network interface down manually (admin down),
then the user specific groups are not re-joined. This works now the same
way as IPv6 re-joining.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
The asserts were not proper here, replace those by runtime
checks as the functions can be called from applications and
asserts are not meant for error checking.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
When IPv4 address is added, currently the netmask remains empty. This
makes it impossible to use the address now that the netmask is
considered during address selection if the application does not
specify the netmask manually. Therefore specify a default netmask for
IPv4 addresses added to an interface with Kconfig.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Bit-wise comparing of the entire IPv4 addresses doesn't make much sense
as when selecting the source address for communication, what really
matters is the subnet part.
Doing so may actually lead to unexpected results, i. e. two addresses
within the same subnet should be considered equally good for
communication within the subnet, yet comparing the unique part of
the address (beyond the netmask) may lead to different results.
This is a problem for the mechanism of preferring the default interface
for LL communication if two interfaces have LL addresses with the
default subnet mask.
Fix this by filtering out the subnet from the IPv4 address before
passing it to net_if_ipv4_get_best_match() function.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Currently we blindly return the LL address found on the default
interface or else on the first interface that has a valid LL address
configured.
This doesn't work well, if different interfaces have LL addresses
configured with a different subnet mask. Therefore, instead of blindly
selecting the address based on the first LL address encountered, use
net_if_ipv4_get_best_match() function for LL addresses to find the best
match for the given interface.
The rework takes into account current behavior, i. e. default interface
still gets the preference if there is no better candidate.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
This is helper is only needed in socket multicast interface selection
where we need to get one address from the interface so that it will
tell (when getsockopt() is used), the interface IPv4 address where
multicast packets will be sent. This is private function which is not
needed in public headers so place the prototype to net_private.h file.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Do the selection same way as in IPv6 so that if user supplies
unspecified destination address, the default interface is selected
the same way.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Catch "Destination Unreachable" ICMPv4 messages and update PMTU for
a given destination IPv4 address.
Use that PMTU when sending data to the destination.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
This implements support for RFC 7217 which describes a method
to have stable IPv6 Interface Identifiers to be used with IPv6
Stateless Address Autoconfiguration (SLAAC). The stable IIDs are used
to provide enhanced privacy so that an IPv6 address configured using
this method is stable within each subnet, but the corresponding
Interface Identifier changes when the host moves from one network
to another. This method is meant to be an alternative to generating
Interface Identifiers based on hardware (MAC) addresses,
such that the benefits of stable addresses can be achieved without
sacrificing the security and privacy of users.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
IPv6 based interface lookups doesn't require native IP stack support,
hence reflect that in the API.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
IPv6 MLD API was so far defined in an internal header. This does not
seem correct though, as application code should be able to join/leave
multicast groups, hence the API should be exposed in a public header,
just as it is done for its IPv4 countepart - IGMP.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
In case NET_NATIVE is disabled, certain network stack components do not
need to be compiled. Otherwise, they could throw errors if
--no-gc-sections compiler options is enabled.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Make sure we check the checksum offloading capabilities correctly
for VLAN interfaces. Use the real Ethernet interface when doing the
check.
Fixes#78724
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
It shouldn't be needed to enable native networking to be able to
add/delete IP addresses on network interfaces.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Running IPv6 on STM32H743 using eth_stm32_hal I had to extend
the timeout between the attempts to send Router Solicitation packets
from 1 second to 2 seconds. Else it looked liked the packet never
got sent (checked using tcpdump).
Signed-off-by: Stefan Petersen <spe@ciellt.se>
The code was checking IPv4 address instead of IPv6.
Print also IPv6 address when rejoining the group.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
TX time tracing tells how long it took from network packet
creation to when the stack got rid of it.
So the network stack allocates net packet, this is the
start time. The end time is when the packet is fully processed (sent)
by the network device driver.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Some offloaded ifaces have an L2, but lack support for
net_l2->send. This edge case is not handled by
net_if_send_data, resulting in a NULL dereference under
rare circumstances.
This patch expands the offloaded iface guard in
net_if_send_data to handle this edge case.
Signed-off-by: Georges Oates_Larsen <georges.larsen@nordicsemi.no>
If IPv6 is not enabled for a given network interface, then there
is no need to try to join IPv6 multicast groups as it will just
cause an error print which is pointless in this case.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
This commit reduces `#if / #endif` pairs by leveraging the
`IS_ENABLED` macro:
- Removed `#ifdef / #endif` around `NET_L2_DECLARE_PUBLIC` in `net_l2.h`,
enabling compilation without affecting link time if the configuration
is unavailable.
`set_default_name` function:
- Replaced multiple `if` statements with `else if` to use the last `else`
without indirectly checking `name[0] == '\0'`.
- Since `snprintk` guarantees null-termination if `sizeof(name) > 0`,
the `-1` subtraction is unnecessary, eliminating the need for
zero initialization in `char name[CONFIG_NET_INTERFACE_NAME_LEN + 1];`.
Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
Most set functions have a get function as well, add the missing
function to get the set gateway IPv4 address.
Signed-off-by: Bas van Loon <basvanloon@betronic.nl>
If newly introduced interface type is unset then return the first Wi-Fi
interface as a fallback, this fixes backward compatibility.
Also, add NM APIs and use them for type checks, rather than directly
using the type enumeration.
Fixes#75332.
Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>
Removed the declaration and assignment of `eth_ctx` variable from
`net_if_get_wifi_sta` and `net_if_get_wifi_sap` functions since
it was not being used.
Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
OpenThread interfaces were not considered when default interface name
is assigned, so they ended up with a generic "netX" name. Since it
useful to have an option to identify interface easily by name, assign an
unique "threadX" name for OpenThread interfaces, just like it's done for
other interface types.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Split wifi interface into station mode and soft-AP mode, as there may be
station and soft-AP two interfaces that work concurrently.
Signed-off-by: Maochen Wang <maochen.wang@nxp.com>
The Xilinx AXI Ethernet subsystem is capable of RX/Tx checksum
offloading. While it supports computing IP and UDP/TCP checksums, it
does not support computing ICMP checksums and only computes IP checksums
for ICMP messages. Thus, this patch adds an additional configuration for
ethernet drivers that indicates for which protocols checksum offloading
is (to be) supported. This flag is then considered by the IP subsystem
in determining when flags need to be computed in software.
Signed-off-by: Eric Ackermann <eric.ackermann@cispa.de>
Added incrementation of the packet reference count when puting
the packet on the queue used in tx timestamping thread. This fixes
an issue when user wants to access the packet data in the timestamp
callback context. Before the fix was introduced if sockets were used
packet has been unreferenced before execution reached timestamp callback
context.
Signed-off-by: Adam Wojasinski <awojasinski@baylibre.com>
The autoconf module can now reuse generic address conflict detection,
which was added for all address types.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Add support for IPv4 conflict detection, as specified in RFC 5227.
The new feature is optional and disabled by default.
Address conflict detection was implemented as a part of the IPv4
autoconf feature can be generalized to be available for all address
types.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Some IPv4/IPv6 functions were ifdef-sliced internally, despite being
compiled in conditionally in top-level #ifdef block under the same
condition.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
In some cases the comment after #endif did not match the opening #if, in
some cases it was missing.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Namespaced the generated headers with `zephyr` to prevent
potential conflict with other headers.
Introduce a temporary Kconfig `LEGACY_GENERATED_INCLUDE_PATH`
that is enabled by default. This allows the developers to
continue the use of the old include paths for the time being
until it is deprecated and eventually removed. The Kconfig will
generate a build-time warning message, similar to the
`CONFIG_TIMER_RANDOM_GENERATOR`.
Updated the includes path of in-tree sources accordingly.
Most of the changes here are scripted, check the PR for more
info.
Signed-off-by: Yong Cong Sin <ycsin@meta.com>
The input address originates from an RX net_buf which may
be unaligned. Consequently, word access to this unaligned buffer
can trigger an unaligned access exception on certain platforms,
such as the ARMv7 Cortex-A9.
Signed-off-by: Taras Zaporozhets <zaporozhets.taras@gmail.com>
When the network inteface goes operational DOWN (for example cable
unplugged), clear "joined" flag on all registered multicast addresses,
so that MLD report is sent for them when the interface goes back up.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
When bringing interface down, all IPv6 multicast addresses are removed
from the interface. However, when the interface was brought back up,
rejoin_ipv6_mcast_groups() would look only for solicited node mcast
addresses already present on the interface. In result, after going back
up, the interface was missing solicited-node mcast addresses for those
unicast addresses, that were already present on the interface when
bringing up.
As net_ipv6_mld_join() does similar checks to skip MLD when not needed,
we can just skip the lookup when rejoining, and use already defined
join_mcast_nodes().
Additionally, check for IPV6 and NO_ND flags on the interface before
attempting to add the address back, those multicast addresses are not
needed if ND is disabled on the interface.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
In case a network interface is brought down and back up, DAD was not
performed for link-local unicast address.
This happens because the logic in the network interface code assumed
that DAD for link-local address is triggered when the address is added,
and it's explicitly omited when looping over IPv6 address. This wasn't
the case however when interface was brought back up, as the address was
already present on the interface, hence DAD skipped.
In Linux, the link-local address is removed from the interface when the
interface is brought down. Such approach solves the issue described,
hence implement it in a similar way in Zephyr.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
It may happen that the interface is up but not yet running
when we issue the rejoin_ipv6_mcast_groups(). This can be
fixed by calling this function again right after the iface
is set to 'running' state in the notify_iface_up handler.
Signed-off-by: Marcin Kajor <marcin.kajor@nordicsemi.no>
When calling net_if_get_default(), print a warning if no
network interfaces are found. This helps debugging mysterious
crashes.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
When trying to get IPv6 prefix, if there are no network interfaces
then the net_if_get_default() will return NULL but we should not
crash at that point but return gracefully.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Add support for IPv6 Source Address Selection defined in RFC 5014.
This commit does not add any address selection support to getaddrinfo()
as described in the RFC. The AI_EXTFLAGS symbol and also the ai_eflags
to hints is added but they are not used by the code.
The public/temporary address selection is only done internally by
the net_if_ipv6_select_src_addr_hint() according to flags set by
setsockopt().
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
Add reference counting to network interface address (for both
IPv4 and IPv6) so that the address is not removed if there are
sockets using it. If the interface address is removed while there
are sockets using it, the connectivity will fail for the said
socket.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
If IPv6 privacy extension is enabled, then we need to select
proper public or temporary IPv6 source address when sending the
packet.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
This creates support for IPv6 privacy extensions which is described
in RFC 8981. This will also add API that can be used to add IPv6
prefixes to a allow or deny list privacy extension filter.
The code will create temporary IPv6 addresses from prefixes that
are advertised by Router Advertisement messages. The temporary
IPv6 addresses are then expired according to lifetime and removed.
Fixes#9349
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
