linux.git/arch/um/drivers/vector_user.c, branch v5.6

um: Loadable BPF "Firmware" for vector drivers

2019-11-25T21:43:31+00:00

All vector drivers now allow a BPF program to be loaded and
associated with the RX socket in the host kernel.

1. The program can be loaded as an extra kernel command line
option to any of the vector drivers.

2. The program can also be loaded as "firmware", using the
ethtool flash option. It is possible to turn this facility
on or off using a command line option.

A simplistic wrapper for generating the BPF firmware for the raw
socket driver out of a tcpdump/libpcap filter expression can be
found at: https://github.com/kot-begemot-uk/uml_vector_utilities/

Signed-off-by: Anton Ivanov 
Signed-off-by: Richard Weinberger

um: Add SPDX headers for files in arch/um/drivers

2019-09-15T19:37:16+00:00

Convert files to use SPDX header. All files are licensed under the GPLv2.

Signed-off-by: Alex Dewar 
Signed-off-by: Richard Weinberger

um: Error handling fixes in vector drivers

2019-09-15T19:37:09+00:00

With the addition of bess support which uses connection
oriented SEQPACKET sockets the vector routines can now
encounter a "remote end closed the connection" scenario.

This adds handling code to detect it in the TX path and
the legacy RX path. There is no way to detect it in the
vector RX path because that can legitimately return 0
even if the remote end has not closed the connection. As
a result the detection is delayed until the first TX
event after the close.

Signed-off-by: Anton Ivanov 
Signed-off-by: Richard Weinberger

um: Added support for unix socket transports and bess transport

2019-09-15T19:37:09+00:00

This adds support for the UNIX domain socket transports in
general and implements a Netsys::BESS compatible transport
interface.
For details on Netsys::BESS see https://github.com/NetSys/bess

Signed-off-by: Anton Ivanov 
Signed-off-by: Richard Weinberger

um: Add legacy tap support and rename existing vector to hybrid

2019-09-15T19:37:08+00:00

1. Adds legacy tap support
2. Renames tap+raw as hybrid

Signed-off-by: Anton Ivanov 
Signed-off-by: Richard Weinberger

um: Remove duplicated include from vector_user.c

2019-03-06T21:37:35+00:00

Remove duplicated include.

Signed-off-by: YueHaibing 
Reviewed-by: Anton Ivanov 
Acked-by: Anton Ivanov 
Signed-off-by: Richard Weinberger

um: writev needs

2018-12-27T21:48:35+00:00

vector_user.c doesn't compile without this for me.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Richard Weinberger

um: Include sys/uio.h to have writev()

2018-12-27T21:48:19+00:00

sys/uio.h gives us writev(), otherwise the build might fail on
some systems.

Fixes: 49da7e64f33e ("High Performance UML Vector Network Driver")
Signed-off-by: Richard Weinberger

um: NULL check before kfree is not needed

2018-10-29T21:23:12+00:00

kfree(NULL) is safe,so this removes NULL check before freeing the mem

Signed-off-by: YueHaibing 
Signed-off-by: Richard Weinberger

Fix vector raw inintialization logic

2018-03-29T20:18:02+00:00

Vector RAW in UML needs to BPF filter its own MAC only
if QDISC_BYPASS has failed. If QDISC_BYPASS is successful, the
frames originated locally are not visible to readers on the
raw socket.

Signed-off-by: Anton Ivanov 
Signed-off-by: Richard Weinberger