When all TX descriptors were reserved in a row so that TX buffer
reclaim interrupt did not happen during reservation sequence, after
the interrupt occurred, TX buffer reclaim did no longer free buffers.
This happened because when all descriptors were in use, last free
index pointed to consumed index.
LWIP stack is configured to be 1200 as default. Without debug enabled,
maximum stack size used for asynchronous DNS operations is 880 bytes. With
debug enabled maximum used stack size is 1248. Added configuration
to LWIP to increase stack size by 25 percent when debug is enabled on build.
Two cascading copy-paste errors stopped this working:
* PPPCellularInterface::get_gateway() called
nsapi_ppp_get_ip_address();
* nsapi_ppp_get_gateway() called the interface's get_netmask().
First bug has always been there - second one was introduced in 5.9.
AT_CellularNetwork currently lacks calls to get both netmask and gateway
- this patch would be needed for that when added.
Set correct SYSMPU register for proper USB operation. This bug was
introduced when the SYSMPU register names and defines were updated
in the commit:
"K64F: Updated the SYSMPU SDK driver"
93f8cfed05
If the value is an integer, the 4th bit is used for sign, so you can store
values upto 7 only whereas the datarate values could go upto 15. That's why
we need to turn this to an unsigned integer so that the last bit can also be used.
Travis astyle check pointed out some of the style mismatches in the code.
Not all of them are worth changing as they make the code unreadable and
some of them are semantically wrong.
So in this commit, we have attempted to pick the most important style
mismatches and rectify.
TX pointer array was using RX ring length in its declaration.
Wasted memory if RX ring > TX ring, as is the default, but would
be broken if RX ring < TX ring.
16 RX buffers and 8 TX buffers is probably excessive. Nanostack
version of driver successfully used 4+4, and data pump should be
broadly equivalent.
This means that switching K64F devices from Nanostack to EMAC increases
base heap usage by 18K - observed in Nanostack border router builds.
Add a config option to make it possible to lower the number of buffers.
Defer consideration of lowering the default to later.
Nanostack object constructor didn't actually initialise Nanostack.
Nanostack initialisation was deferred until an interface was actually
attached to the stack, which generally happened at first interface
connect.
Not normally a problem, unless you're trying to make direct Nanostack
setup calls prior to connect - some applications do this, and were
relying on ThreadInterface::initialise to do Nanostack
initialisation.
Unfortunately in 5.9 ThreadInterface::initialise no longer does
initialise Nanostack immediately, because the mesh interfaces were
aligned and integrated with the Ethernet interfaces, which did
initialisation on connect().
Make the Nanostack object constructor initialise Nanostack (as the LWIP
constructor does for lwIP), so calling Nanostack::get_instance() is the
5.9 API for Nanostack initialisation.
For future work, APIs like ns_file_system_set_root_path should be
exposed as methods of Nanostack, so everything happens with a single
Nanostack::get_instance().file_system_set_root_path().
DNS resolver now counts how many sendto operations are successful
during one DNS server attempt cycle (attempting to contact DNS
servers from 0 to last index, including stack specific ones). If all
socket sendto operations fail, DNS resolution is aborted.
If one or more are successful, DNS resolution is continued until
total network attempts count is reached or all sendto operations
fails during a cycle.
These settings control the range of functionality enabled in the softdevice as well as ram consumption.
In particular reducing these values is critical to enable usage of 16K nrf51 devices.
- Set network stack to store event queue so that mbed::mbed_event_queue() call
is not needed every time call_in() is called
- Added dns state variables and enum (states are: created, initiated and cancelled)
- Corrected DNS response handling so that if DNS server returns that host name is
unknown the DNS query is not tried again
- Reorder mutexes in nsapi_dns_query_multiple_async()
- Created nsapi_dns_query_async_initiate_next() function to initiate the next
DNS query from the queue after delete of previous query
- Added dsn_timer_running variable to supervise DNS timer start/stop
- Changed cancel function to only mark query as deleted and moved deletion
to timer function. This allows to run socket close on DNS thread
- Added new nsapi error NSAPI_ERROR_TIMEOUT for DNS (and other) timeouts
Mika Leppänen
Teppo Järvelin
Yoshihiro TSUBOI
paul-szczepanek-arm
Kevin Bracey
Ari Parkkila
Russ Butler
Teemu Kultala
Amanda Butler
David Saada
Kimmo Vaisanen
Hasnain Virk
cyliangtw
Michael Schwarcz
Andrew Leech
Yossi Levy
Donatien Garnier
Mirela Chirica
Veijo Pesonen
Kari Haapalehto