Reduce the default size of `MBEDTLS_MPI_MAX_SIZE` to 512 bytes,
as the default 1024 consumes much stack, and supporting RSA 4096 bit
may suffice at the moment.
Connection status issue corrected. If the link layer status changes,
the connection status callback is now called correctly.
mbedtls headers from library are removed and the mbed-os one's are used.
Fix comes from rabbitmq:
> On December 1st, 2018 (GMT) all repositories under the RabbitMQ account on PackageCloud
will be switched to use the new signing keys. RabbitMQ users who install packages
from PackageCloud must import the new signing keys before the migration.
The recommended way of doing that is by re-running PackageCloud setup
scripts (RabbitMQ, Erlang). Signing keys can be downloaded and imported directly
as well (RabbitMQ, Erlang). If the new keys are not imported, package installation
will start failing with a signature verification error.
UDP packets are always received as OOB data. Without checking for
new OOB data with a call to "_process_oob" then recv_udp never blocks.
If a UDP packet is not available then NSAPI_ERROR_WOULD_BLOCK is
returned. This causes mbed-os's DNS handling to always fail when
flow control is enabled.
This patch fixes recv_udp by always calling "_process_oob" regardless
of if flow control is enabled. This ensures that recv_udp follows the
timeout parameter and waits for new data to arrive.
When using UARTSerial sending data over the uart follows the sequence
below:
<-TX done ISR runs and sets a software interrupt to pending
<-Software interrupt fires:
-disables TX done interrupt
-calls UARTSerial TX handler which sends bytes until the uart
buffer filled (writeable returns false). Sending a byte
re-enables the TX done interrupt continuing the cycle
Due to this sequence, if the UARTSerial TX handler does not send a byte
then the transmit state machine mentioned above will get stuck with
the TX done interrupt disabled. The events causing this failure:
<-TX done ISR runs and sets a software interrupt to pending
<-Software interrupt fires:
-disables TX done interrupt
-calls UARTSerial TX handler:
-checks writeable which is true and sends a byte
<- interrupted by a higher priority interrrupt
<- TX done ISR runs, setting software interrupt to
pending again
-checks writeable which is true and sends a second byte
-Software interrupt finishes
<-Software interrupt fires:
-disables TX done interrupt
-calls UARTSerial TX handler:
-checks writeable which is false and DOES NOT SEND A BYTE
-Software interrupt finishes, the TX interrupt is still disabled
*-Byte gets sent but TX done ISR does not fire
This patch prevents the TX lockup by removing the code in the
software interrupt which disables the TX done interrupt. Disabling the
TX done interrupt at this point is not necessary so this code is safe
to remove.
Ron Eldor
Vincent Coubard
Wilfried Chauveau
Oren Cohen
jeromecoutant
Kari Haapalehto
Yossi Levy
Juho Eskeli
Martin Kojtal
Cruz Monrreal
Jaeden Amero
Paul Szczepanek
Russ Butler