[RTEMS Project] #4493: pppd broken if serial driver can't handle big data
RTEMS trac
trac at rtems.org
Thu Aug 12 09:25:52 UTC 2021
#4493: pppd broken if serial driver can't handle big data
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Reporter: Christian Mauderer | Owner: Christian Mauderer
Type: defect | Status: assigned
Priority: normal | Milestone:
Component: network/libbsd | Version: 6
Severity: normal | Keywords:
Blocked By: | Blocking:
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The current implementation of ppp assumes (in ppp_tty.c:pppstart) that
sending characters via the termios device write function will send buffers
of any length. That is not true for most drivers.
Devices that can only send one character at a time won't work with that at
all. Devices that have a big enough FIFO might work most of the time.
Devices that use a DMA for transmitting might work without problems.
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Ticket URL: <http://devel.rtems.org/ticket/4493>
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