The rationale for removing fragments while sending them is to free the
memory they're using as soon as possible. This worked fine because
most protocols implemented initially did not require any
retransmission, so the upper layers were never holding an extra
reference to the buffer (& their fragments).
This is not the case anymore, as the TCP layer holds a reference to
a buffer (& fragments) while confirmation from the peer has not been
received, allowing retransmission.
With this change, the fragments of a buffer are not removed when being
sent by the SLIP layer; however, the buffer is still deferenced when the
transmission is complete. If nothing else holds a reference, all the
fragments are returned to their respective pools, like before.
Change-Id: I74966d72f6970b66f526ea0b765101077c843de2
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
Replace the existing Apache 2.0 boilerplate header with an SPDX tag
throughout the zephyr code tree. This patch was generated via a
script run over the master branch.
Also updated doc/porting/application.rst that had a dependency on
line numbers in a literal include.
Manually updated subsys/logging/sys_log.c that had a malformed
header in the original file. Also cleanup several cases that already
had a SPDX tag and we either got a duplicate or missed updating.
Jira: ZEP-1457
Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Use the right data-type to avoid compiler warnings.
Change-Id: I3e807482c5636f37ef1288689450dbe3c9c04dcf
Signed-off-by: Flavio Santes <flavio.santes@intel.com>
Move logging out of misc/ to its own subsystem. Anything related to
logging and any new logging features or backends could be added here
instead of the generic location in misc/ which is overcrowded with
options that are not related to eachother.
Jira: ZEP-1467
Change-Id: If6a3ea625c3a3562a7a61a0ba5fd7e6ca75518ba
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
subdir-ccflags-y +=-I${srctree}/subsys/net/ip isn't need so lets
remove it.
Change-Id: I60d97ce25398d7d3801e837075dbf75d1375e055
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
* Moved networking code into subsys/net.
* Renamed net/yaip to net/ip at the same time.
* Fixed the tests/net to compile
* Fixed the Makefiles and Kconfig files in subsys/net
to use the new location of the IP stack
Change-Id: Ie45d9e8cb45a93fefdf969b20a81e3b1d3c16355
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The fragment count value was incorrectly printed. All
the values > 9 had their last digit chopped off.
Change-Id: I8304b8047baa97995c3927809e4616653c87928b
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This change is related to patch called
"net: Adapt to new behavior of net_buf_frag_add"
This version removes extra net_nbuf_unref() from
the code. The unref was done because net_buf_frag_del()
did not remove the double ref from the list element.
Because of the other patch, the list does not have
double ref any more, so we need to remove the extra
unref in couple of extra places.
Change-Id: If90e01c24b9b4e68afbfa283850d2a1ecb3065ed
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Slip context parameter is not used in hexdump and in few places
it is not defined. So CONFIG_SLIP_DEBUG=y throws errors.
Change-Id: I73ca26b7d5cd7c3cd532462b5300e25bbdac9511
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
ll_reserve is given through each buffer to be sent, it is therefore easy
to get it from there.
Change-Id: I8b52fe1b72065f5f58275f939253942f7db1f136
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
No need to store the mtu locally as the network interface already holds
it.
Change-Id: I4a1c3d164eefa28622dcb6cd510a66a825c3d9fb
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Link Layer reserved space will be handled by relevant L2 layer.
Change-Id: I8e45119adb4de84ba321cad444c11bedef4415e8
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Multipackets support not handled perfectly and breaks regular
flow on some occasions. So remove this support and have to
implement properly.
Change-Id: I1b72c66479c3516df6e6e93998edff1260eb839d
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Print the link layer header in different color so that the
actual IP payload in packets are easier to see. Also the
link layer header of the first packet was not printed.
Change-Id: I99699d378ae28d6d90c683c646c904c926b7dd06
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
When only the dummy frame format is enabled, some variables are left
unused, causing some warnings.
Change-Id: Ic7bc5560a9fcb573e715c2cc29f308cec5214f64
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Allocate the right amount of space for L2's context.
Change-Id: Ia2f4f4162334e9e9c26dc95230abdfde5986e052
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
No need to partition the data if MTU is large enough and
data can be sent in one frame.
Change-Id: I8ba0f5030ed1e2c1341c7e2dd409ba636b1a9a4c
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Using macros does not let the compiler verifying about the type we are
providing, which usually give an error easier to understand.
Also, this will let the compiler deciding how to actually optimize
(inline or not) the code.
Change-Id: Iba49590b620ef0a1bd0ed5621453524fcfea747c
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If the MTU is bigger than fragment size, we must leave the
fragment link layer header empty so that the received data
count does not get wrong.
Change-Id: I0ed562f39bfbfb559885baa6d774c0383b2228b2
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
There is no harm for doing so but debug prints will look
weird in this case.
Change-Id: I48b6953d07a58bc952fe961cf1db846740dadc50
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
There will be a crash if network device sends data to network
stack before it is ready to receive such data.
Change-Id: I1a32485faba2972909262c4305fb465b6cb87f07
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The code was using NET_DBG() which is not really available
for the slip/tap driver.
Change-Id: I64cedd5fbfb54fdb80d606cf3199312c8871246f
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Easier to see buffer leaks using this variant.
Change-Id: Ibdc8d73133cab4822451104fcd5742e4f1e20e42
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
As there is a L2 in the middle, there is no need for
net_if to provide such information.
Change-Id: I58a35d4d124cd8a67026f32e71713ef06f43b7c5
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Net core then does not know anything about l2 related logic.
For instance ARP is used in ethernet l2 API and nowhere else.
This will be helpful when adding different technologies altogether.
Currently, only SLIP driver is enabled to use relevant l2 layer.
Change-Id: I03c93326321028d04222733ca4083e3c6b785202
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2 warnings happens when CONFIG_SLIP_DEBUG is set, thus fixing it.
Change-Id: I032d7481942e86911764da35cdd6f7b8e05cdeaa
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If CONFIG_SLIP_TAP is defined, then ethernet link layer header is
added before the packet.
Change-Id: I3d266017f85683999d3c67de49b75b60686d7ba7
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Renamed net_recv() to net_recv_data() so that the more generic
name can be used by applications. The net_recv_data() is only
meant to be used when L2 layer feeds data into L3 (IP) layer.
Change-Id: Iba155d51f81e3b99964fa916fe87a05a8bf8766a
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Check if we have received IPv4 packet and call a handler
function to process it.
Change-Id: I9f9e5f0888d2c3b91401c98f4925647ddce09962
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The SLIP driver is using UART pipe driver to communicate with
host when Zephyr is running in Qemu. Currently this is only
used by networking sub-system when testing the networking
stack.
Change-Id: I432b4136670766a7fc190f146057924c266f9bea
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Follow up to TSC decission for further discussion in the networking
WIG.
Change-Id: I148b484dfe308661573e47ed3e60cceed673bddf
Signed-off-by: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
As there is a L2 in the middle, there is no need for a net_if to provide
such information.
Change-Id: I58a35d4d124cd8a67026f32e71713ef06f43b7c5
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Net core then does not know anything about l2 related logic.
For instance ARP is used in ethernet l2 API and nowhere else.
This will be helpful when adding different technologies altogether.
Currently, only SLIP driver is enabled to use relevant l2 layer.
Change-Id: I03c93326321028d04222733ca4083e3c6b785202
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2 warnings happens when CONFIG_SLIP_DEBUG is set, thus fixing it.
Change-Id: I032d7481942e86911764da35cdd6f7b8e05cdeaa
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
If CONFIG_SLIP_TAP is defined, then ethernet link layer header is
used before the packet.
Change-Id: I3d266017f85683999d3c67de49b75b60686d7ba7
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Renamed net_recv() to net_recv_data() so that the more generic
name can be used by applications. The net_recv_data() is only
meant to be used when L2 layer feeds data into L3 (IP) layer.
Change-Id: Iba155d51f81e3b99964fa916fe87a05a8bf8766a
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Check if we have received IPv4 packet and call a handler
function to process it.
Change-Id: I9f9e5f0888d2c3b91401c98f4925647ddce09962
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
The SLIP driver is using UART pipe driver to communicate with
host when Zephyr is running in Qemu. Currently this is only
used by networking sub-system when testing the networking
stack.
Change-Id: I432b4136670766a7fc190f146057924c266f9bea
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Leandro Pereira