The 32bits one can hold up to about 50 days, this is more than enough
knowing that ARP request timeout is 2 seconds.
So reducing the request start time to 32bits.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
We replied to an ARP request that has the same Sender Hardware Address
than that of ours. Such an ARP request must be discarded, no reply
should be sent and translation table should not be updated.
Fixes#16110
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If a packet is received with Ethernet source address different
from ARP's sender hardware address field, then DUT must use the
latter address in response packets.
Fixes#16098
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The pkt variable cannot be NULL at this point so the check for
nullness is not needed.
Coverity-CID: 198002
Fixes#15777
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
In addition to checking that the ARP entry does not exist as the
implementation is done currently, also check if the ARP packet
is due to IPv4 link local address configuration. In both cases
use the provided IPv4 address instead of the one set for the
interface.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
If we receive the ARP request, then check if the ARP cache
contains an entry for this IP address already. If it does,
then update the MAC address in the cache.
Fixes#10188
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.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>
There is no need to reserve any space for each frag, as the l2 will
allocate a frag for the ethernet header, arp will do the same.
This is one step further to removing the concept of ll reserve.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@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>
Now that sending is done at last time, in one pass, no need to go
through net_if_send_data here.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Current code generating Ethernet header is scattered all over the place,
sometimes in functions that are supposed to check something (and not
filling the header). Not to say about innefficiency.
Src ll address does not need to be set in L2 as net_if.c handles that
already.
Broadcast dst ll address is the same in ipv4 or ipv6, thus factorizing.
In each case, multicast is filled in only at the relevant place.
This is the first step towards changing L2 sending logic, when L2 send
API function will be the only point of sending. The redirection from
driver to L2 again (which finally uses the right device API function to
send) it a temporary hack.
This simplifies the code but will also enable using statically
allocated net_buf and ethernet header payload buffer afterwards.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This is currently unoptimized, as all frags are allocated with relevant
ll reserve for such header space. However, this is the first step
towards getting rid of that ll reserve concept everywhere.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If ARP Request with sender IP address set to localhost then drop
the request.
Fixes#11489
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
If ARP header contains invalid fields then drop the packet.
Fixes#11257Fixes#11254Fixes#11253Fixes#11248
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Verify incoming ARP packet hardware and protocol type. Drop
unknown type of packets.
Fixes#11215Fixes#11217
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@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>
If we receive a valid gratuitous ARP request, then update ARP
cache accordingly. This feature is optional and by default
it is enabled, but can be turned off if needed.
This is similar to a feature available in Linux, and is enabled
by default in many distros.
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>
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>
*_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>
Unspecified address 0.0.0.0 was used as a requested IPv4 address
because the ARP message was generated second time. So for IPv4
autoconf ARP message, generate the message only once.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.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>
An ARP entry, if not free, will be either in pending list or in the ARP
table. What differentiate both is the type of data they hold: either a
pending packet or an actual ethernet address.
It is then possible to unite these 2 attributes to save 4 bytes
per-entry.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Until now, each ARP entry had a k_delayed_work to be used as a timer
when the ARP entry is a pending one, waiting for the ARP request to
succeed in order to get to the ARP table.
But k_delayed_work is not a small object (40 bytes). Thus reworking the
ARP request timer by having one central k_delayed_work and a timestamp
in every ARP entry properly handled at every timeout (1+ entry might
have reached the timeout then).
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Instead of looping over the entries array, which will keep the same
order, let's use slist: one for free entries, one for pending ones and
finally one as the actual ARP table.
This permits some optimizations in how to look up and making small
heuristics by changing entries order when it seems relevant.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@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>
