OpenE2K/qemu-e2k
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17ec9921a7
qemu-e2k/hw/char
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Halil Pasic 17ec9921a7 s390x/3270: handle writes of arbitrary length 
The problem is, that the current implementation places unrealistic and
arbitrary constraints on the length of writes to the device (that is the
outbound requests), by asserting ccw.count being such that that even the
worst case escaped payload will fit an  more or less arbitrary sized
buffer. Actually on protocol level there is nothing to justify such
a limitation.

Another strange thing is the return value which more or less reflects
the size (written) after escaping instead of before escaping. This
is strange, because this return value is used to calculate SCSW.count.

Let us teach 3270 how to deal with arbitrary long writes.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Reported-by: Jason J . Herne <jjherne@linux.vnet.ibm.com>
Tested-by: Jason J . Herne <jjherne@linux.vnet.ibm.com>
Message-Id: <20170920172314.102710-3-pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2017-10-06 10:53:02 +02:00
..
bcm2835_aux.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
cadence_uart.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
cmsdk-apb-uart.c hw/arm/mps2: Add UARTs 2017-07-17 13:36:08 +01:00
debugcon.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
digic-uart.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
escc.c qapi: Mechanically convert FOO_lookup[...] to FOO_str(...) 2017-09-04 13:09:13 +02:00
etraxfs_ser.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
exynos4210_uart.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
grlib_apbuart.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
imx_serial.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
ipoctal232.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
lm32_juart.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
lm32_uart.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
Makefile.objs hw/char/cmsdk-apb-uart.c: Implement CMSDK APB UART 2017-07-17 13:36:08 +01:00
mcf_uart.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
milkymist-uart.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
omap_uart.c chardev: move headers to include/chardev 2017-06-02 11:33:52 +04:00
parallel.c chardev: fix parallel device can't be reconnect 2017-07-14 12:04:41 +02:00
pl011.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
sclpconsole-lm.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
sclpconsole.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
serial-isa.c char: rename CharDriverState Chardev 2017-01-27 18:07:59 +01:00
serial-pci.c
serial.c migration: pre_save return int 2017-09-27 11:35:59 +01:00
sh_serial.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
spapr_vty.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
stm32f2xx_usart.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
terminal3270.c s390x/3270: handle writes of arbitrary length 2017-10-06 10:53:02 +02:00
trace-events trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
virtio-console.c virtio-serial: add enable_backend callback 2017-09-21 11:51:49 +02:00
virtio-serial-bus.c virtio-serial: add enable_backend callback 2017-09-21 11:51:49 +02:00
xen_console.c char: avoid chardevice direct access 2017-07-14 11:04:33 +02:00
xilinx_uartlite.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00