It is possible that the device driver API pointer is null.
For example if the device driver returns an error, the device
code will make the API pointer NULL so that the API would not
be used. This can cause errors in networking code where we
typically do not check the NULL value.
Fixes#15003
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
If ethernet controller has VLAN tag strip flag enabled
(ETHERNET_HW_VLAN_TAG_STRIP), L2 etherent will not read tag from
the Rx etherent header. Instead it will fetch VLAN tag from
net packet metadata.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
IPv4 link local uses ARP to detect conflicting addresses. Properly
set the ethernet packet type to NET_ETH_PTYPE_ARP when probing
for address duplicates.
Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
When VLAN is enabled, ethernet l2 layer fills ethernet header
but not added to the network buffer.
Fixes#15346
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
No need to hide the symbols in the header file if CONFIG_NET_LLDP
is not enabled. This also allows the documentation to be generated
properly.
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The packet can be referenced somewhere else and letting the newly added
L2 header will generate corrupt packet. If the same packet is being
resent, ethernet will add again its L2 header. Thus the need to remove
such L2 header every time a packet has been sent, successfully or not.
Fixes#12560
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If packet family is AF_PACKET and CONFIG_NET_SOCKETS_PACKET
is enabled, just handover the packet to driver for sending.
L2 layer will not touch AF_PACKETs at the moment.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Since the rework of L2/L3 split, only L2 has access to its header. Thus
up to Ethernet one to set LLDP PTYPE.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Use the new API where relevant. Only sam_gmac is left aside for now.
This simplifies a lot the code as the caller should only care about
allocating net_pkt and its buffer once, and thus will not need to mess
with "frags" etc...
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Do not extra ref and then obscurely unref the packet inside
the statistics update function.
Actually, this extra ref/unref isn't needed here at all.
The packet is unreferenced only on a successful send, statistics
updating can be done before the unref in a clean and understandable way.
Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.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>
Common statistics should be updated in one centralized place and
ethernet_send is the right place for tx stats, as well as ethernet_recv
for rx stats.
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>
Instead of redoing what Ethernet L2 already does, let just create the
gptp message without any Ethenet header. Which one will be done as
sending phase by Ethernet L2 relevantly.
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>
Currently, first part is done in L2's send, then the next one in
ethernet device driver net_if send function. That last one was already
moved to a L2 based implementation. Let's just move forward and place
the whole logic of the L2's send in that second function.
This is the first step, ethernet centric only, to move towards a
one-pass sending logic in net stack. In future, net_if's send will
disappear.
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 network stack found ARP entry for peer address, then it
tries to send pending IP packet. But it always keeps ptype
as ARP only. In this particular scenario it has to be IP
packet.
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 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>
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>
*_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>
Add RX API to LLDP. Caller should register callback which is called
from ethernet_recv().
Fixes#9407
Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
If the driver has created start() and stop() functions, then those
are called when ethernet L2 is enabled or disabled.
Signed-off-by: Jukka Rissanen <jukka.rissanen@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>
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>
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>
A small helper function will return information whether
a given network interface has VLAN enabled or not.
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>
2018-06-27 17:02:59 +03:00
Renamed from subsys/net/ip/l2/ethernet/ethernet.c (Browse further)
