This commit moves reading nexthop's LL address only if it's supported
by a given neighbor and can be used for routing between interfaces.
Signed-off-by: Konrad Derda <konrad.derda@nordicsemi.no>
While routing between interfaces source Link-Local L2 address is set
for a packet. However, it should not be done for some of the interfaces.
This commit adds helper function to check this condition in runtime.
Signed-off-by: Konrad Derda <konrad.derda@nordicsemi.no>
While forwarding a multicast packet decrement hop limit in a common net
buffer. Also, packets with hop limit equal to 0 should not be forwarded.
Signed-off-by: Konrad Derda <konrad.derda@nordicsemi.no>
According to the RFC, MODE_IS_INCLUDE/MODE_IS_EXCLUDE codes should be
used while sendling Multicast Listener Reports in response to a query.
When performing a transition between states (e.g., when joining or
leaving a multicast group) CHANGE_TO_INCLUDE_MODE/CHANGE_TO_EXCLUDE_MODE
have to be used.
Signed-off-by: Konrad Derda <konrad.derda@nordicsemi.no>
This commit adds transmission of MLDv2 reports whenever a multicast
routing entry is added or removed when suitable (it checks if the
given interface itself has joined the group).
Signed-off-by: Konrad Derda <konrad.derda@nordicsemi.no>
In order to save memory, a single multicast routing entry now
contains configurable number of network interfaces.
Signed-off-by: Konrad Derda <konrad.derda@nordicsemi.no>
This commmit changes the way of iterating over multicast routing
entries from explicit for-loop to ARRAY_FOR_EACH_PTR().
Signed-off-by: Konrad Derda <konrad.derda@nordicsemi.no>
This is not used by anyone, and is unlikely to be useful actually.
Helps to save 4 bytes for each instance of struct net_nbr also (removing
a 2 bytes attributes, which was anyway generating a 4bytes loss due to
structure misalignment).
Removing relevant useless functions related to it as well.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Currently, the only thread-safe part of the IPv6 Neighbor processing
implementation are stale_counter related operation.
Fix this, by extending the mutex protection over all of the module, so
that message handlers, timers and API functions do not interfere with
each other.
As IPv6 Neighbor cache is tightly coupled with the Routing module, use
the same mutex to protect both, neighbor and routing tables, to prevent
deadlocks.
Also, replace the semaphore used with a mutex, as it seems more fit for
this particular job.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Fix few mismatched CONTAINER_OF, few missing k_work_delayable_from_work
and a missing reference to the array first element.
Signed-off-by: Fabio Baltieri <fabiobaltieri@google.com>
This is a public API for the subsystem, can be called from app
context, unlocks the local k_mutex on one of its three exit paths, and
it's quite clear that nothing ever locks that mutex!
The code used to work because k_mutex simply returned an error if you
tried to unlock an unlocked object. Now zync will panic (when
CONFIG_ZYNC_VALIDATE=y) if you try that.
Signed-off-by: Andy Ross <andyross@google.com>
Zephyr doesn't seem to allow on adding route to the device from
which it received Router Advertisement without SLLAO field set
(in particular device that doesn't include Link Layer address).
Changes done:
* Added creating new NBR without Link Layer address set on RA
reception (LL is added only if SLLAO option is set, otherwise
NBR doesn't have LL address, but exists in the table and has
valid IPv6 link local address).
* Removed two asserts preventing from adding route to the NBR
that doesn't have Link Layer address set.
Signed-off-by: Kamil Kasperczyk <kamil.kasperczyk@nordicsemi.no>
If the call to net_send_data() fails, for example if the forwading
interface is down, then the pkt will leak. The reference taken by
net_pkt_shallow_clone() will never be released. Fix the problem
by dropping the rerefence count in the error path.
Signed-off-by: Andriy Gelman <andriy.gelman@gmail.com>
Logging v1 has been removed and log_strdup wrapper function is no
longer needed. Removing the function and its use in the tree.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
In order to bring consistency in-tree, migrate all subsystems code to
the new prefix <zephyr/...>. Note that the conversion has been scripted,
refer to zephyrproject-rtos#45388 for more details.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Log_strdup was used in NET_ASSERT macro which is not logging.
As a result linking fails when logging is disabled but asserts
are enabled.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
Since most of the functions will access non thread-safe resources like
SLIST, and can be invoked from different threads (like the expiry timer
delayed work), add mutex protection to the function calls.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Implement a concept of Route Preference, as specified in RFC 4191. The
Zephyr host will prefer routes with higher preference, if they lead to
the same prefix through different neighbours.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Add support for route lifetime, as defined in RFC 4191. The existing
route adding logic remains the same, if not specified, lifetime is set
to infinite. For routes added with Route Info option from ICMPv6 RA
message, set the expiration timer, according to the route lifetime value
received.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
When new route is allocated, a corresponding NBR entry (containing
`struct net_route_nexthop` data) is allocated from
`net_route_nexthop_pool`. When the route was deleted however, the entry
was not freed - only the "core" neighbor entry from the neighbor
management module (nbr.c) was dereferenced. This lead to a resource
leak, effecitevly leaking one `net_route_nexthop_pool` entry for each
deleted route.
Fix this, by defreferencing the NBR entry corresponding to the `struct
net_route_nexthop` data of the deleted route when route is removed.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Verify the `ref` value of the neighbor entry in `net_route_foreach()`,
so that it only executes the callback on routes in use. Otherwise, the
function could call the callback for the route that has already been
deleted.
This could be encountered when executing `net route` shell command,
which printed the already deleted routes along the existing ones.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Replace unpacked in6_addr structures with raw buffers in net_ipv6_hdr
struct, to prevent compiler warnings about unaligned access.
Remove __packed parameter from `struct net_6lo_context` since the
structure isn't really serialized.
Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
net: route: Add prefix-based ipv6 multicast forwarding
This adds/reenables the feature of multicast routing/forwarding.
The forwarding decision is based on the added multicast routes
and the new network interface flag:
NET_IF_FORWARD_MULTICASTS.
Signed-off-by: Jan Georgi <jan.georgi@lemonbeat.com>
Instead of casting struct in6_addr, sin6_addr member is now used
directly, like in every other instance of calling net_ipv6_is_prefix().
Signed-off-by: Christian Taedcke <christian.taedcke@lemonbeat.com>
ppp does not populate the lladdr fields in the received packet.
To enable routing for packets received on the ppp interface, the check
of the link layer addresses in the packet must be skipped.
Signed-off-by: Christian Taedcke <christian.taedcke@lemonbeat.com>
If no other route is found, the network interface prefixes are
evaluated. If a matching interface is found, the packet is sent out on
this interface.
Signed-off-by: Christian Taedcke <christian.taedcke@lemonbeat.com>
move misc/slist.h to sys/slist.h and
create a shim for backward-compatibility.
No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.
Related to #16539
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Possible null pointer dereference when looking up the nexthop
neighbor.
Coverity-CID: 190639
Fixes#12294
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
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>
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>
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>
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>
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>
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>
*_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>
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 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>
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>
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>
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>
