Target of LPC1769 links to mbed LPC1768.
The PinNames.h has conditional compile for the pin names.
LWIP lpc17xx emac driver modified to allow LPC1769 target
We currently set the lwIP pbuf pool size small - to 5 x 576-byte
buffers.
This is insufficient to hold a single DTLS handshake flight, so can
cause cloud client connections to fail. STM-based platforms are failing
handshake because of this. (K64F works because it doesn't use the pbuf
pool for reception, but lwIP does recommend drivers use the pbuf pool).
Not changing the default memory sizes here, as intended for a patch
release, but adding mbed configuration options to allow the numbers to
be adjusted for memory tuning in an application.
In a future minor revision, I would recommend increasing the default
PBUF_POOL_SIZE - we are well below lwIP's out-of-the-box default - and
offsetting by a reduction in MEM_SIZE for the drivers that don't use
PBUF_RAM.
Commit f602c936 incorrectly started defining LWIP_DEBUG as either 0 or
1.
lwipopts.h locally was changed to use #if, but all existing users
continued to use #ifdef. Therefore defining it to 0 was accidentally
enabling it for quite a few users.
This would have pulled in some unwanted lwIP code, and affected some
drivers, eg k64f_emac.c allocating an extra 2K of stack.
Correct lwipopts.h to either define it as 1 or leave it undefined, and
change the #if tests back to #ifdef, so all are consistent.
Merged lwip 2.0.2 stable path 1 from https://github.com/ARMmbed/lwip
Patch allows lwip to do autonomous address configuration for prefixes
that are not on-link.
ad7cf16 Add David's IPv6 improvements to CHANGELOG
af9d783 Fix (bogus) MSVC 2010 warning about uninitialized variable usage in ip6.c It's wrong because the variables are initialized during first loop iteration due to best_addr == NULL
68358d7 nd6: cull destination cache on router removal
7323fa1 nd6: some work on basic RFC 4861 compliance
10eb2ca ip6: improve source address selection
6c06ecd ip6/nd6: route using on-link prefixes, not addresses
9f1714d nd6: improve router selection
2486b41 netif: more ip6 state changes invoke status callback
519d809 nd6: fix Duplicate Address Detection
9f3c6dd nd6: check link status before sending packets
8c761a2 nd6: improve address autoconfiguration support
PPP is running close to the edge of its default thread stack size of 512 bytes. When it experiences an FCS error on the incoming data (for example. caused by character loss when the incoming serial rate is too high for it to process in time) it performs some additional work which overruns the thread's stack, hitting the OS "stack underflow" check. Increasing the PPP stack size to 768 bytes resolves this problem.
The function _eth_arch_low_level_input() is meant to pass data into
LWIP and to prepare the ethernet buffers to receive more data.
If the LWIP heap is empty and the call to pbuf_alloc() in
_eth_arch_low_level_input returns null, the ethernet receive buffers
are not updated to receive data. Because of this the ethernet RX
interrupt will not fire. Since the RX interrupt is the only thing that
triggers a call to _eth_arch_low_level_input(), the receive buffers
will never get cleared, and the device stops receiving data.
To prevent this from happening, this patch ensures that the function
_eth_arch_low_level_input() clears the receive buffers even if a new
pbuf for the data couldn't be allocated.
This issue can be reproduce by running the test
"features-feature_lwip-tests-mbedmicro-net-udp_echo_parallel"
and on the same machine running the below python script to flood the
device with UDP broadcast packets:
MY_IP = #ADD your local IP here
from socket import *
s = socket(AF_INET, SOCK_DGRAM)
s.bind((MY_IP, 1234))
s.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
s.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)
for _ in range(1000):
s.sendto("test data", ('255.255.255.255', 1234))
print("Message sent")
lwipopts_conf.h is used by target dependent Ethernet drivers for
configuring various parameters.
By default, Ethernet is enabled and in this case lwipopts_conf.h
will be included.
In case of PPP being enabled, it is desirable to not pull in any Ethernet
related code.
This matches the timeout used in linux:
https://linux.die.net/man/5/dhclient.conf
This resolves several issues noticed during testing when we
have a very large number of devices that try to get an IP address
around the same time.
Based on lwip_ethernetif.c skeleton file,
use init, receive and transfer
functionality of SMSC9220 Ethernet driver
for the lightweight IP stack.
Receive mechanism is interrupt driven.
HW buffer sizes:
Tx = 4608 bytes (MTU)
Rx = 10560 bytes
lwIP fine tuning:
mbed-os/features/FEATURE_LWIP/lwip-interface/lwip/src/include/lwip/opt.h
Change-Id: I0ea95650c65fb32cafb5c2d3dde11420c61dba66
Signed-off-by: Gabor Kertesz <gabor.kertesz@arm.com>
Mahadevan Mahesh
Andrea Corrado
Kevin Gilbert
Chris Snow
Laurent MEUNIER
Piotr Grygorczuk
bcostm
Kevin Bracey
cyliangtw
Mika Leppänen
Yuguo Zou
Jimmy Brisson
ccli8
Martin Kojtal
Anna Bridge
Rob Meades
Deepika
Sam Grove
Russ Butler
Hasnain Virk
Christopher Haster
gabker01