kernel/linux.git/arch/um/drivers/vector_user.c, branch v5.10.257

um: vector: Add dynamic tap interfaces and scripting

2020-10-11T21:26:37+00:00

Provide functionality roughly compatible with the existing qemu ifup scripting: * invocation of an ifup script. The interface name is passed as the first and only argument * allocating tap interfaces on the fly if they are not explicitly specified Signed-off-by: Anton Ivanov Signed-off-by: Richard Weinberger

um: Remove redundant NULL check

2020-10-11T21:19:35+00:00

Fix below warnings reported by coccicheck: ./arch/um/drivers/vector_user.c:403:2-7: WARNING: NULL check before some freeing functions is not needed. Fixes: bc8f8e4e6e7a ("um: Add a generic "fd" vector transport") Signed-off-by: Li Heng Signed-off-by: Richard Weinberger

um: Some fixes to build UML with musl

2020-10-11T21:13:06+00:00

musl toolchain and headers are a bit more strict. These fixes enable building UML with musl as well as seem not to break on glibc. Signed-off-by: Ignat Korchagin Tested-by: Brendan Higgins Signed-off-by: Richard Weinberger

um: Fix null pointer dereference in vector_user_bpf

2020-10-11T21:12:51+00:00

The bpf_prog is being checked for !NULL after uml_kmalloc but later its used directly for example: bpf_prog->filter = bpf and is also later returned upon success. Fix this, do a NULL check and return right away. Signed-off-by: Gaurav Singh Acked-By: Anton Ivanov Signed-off-by: Richard Weinberger

um: Add a generic "fd" vector transport

2020-06-02T20:37:28+00:00

Learn to take a pre-opened file-descriptor for vector IO. Instead of teaching the driver to open a FD in multiple ways, it can rely on management layer to do it on its behalf. For example, this allows inheriting a preconfigured device fd or a simple socketpair() setup, without further arguments, privileges or system access by UML. Signed-off-by: Marc-André Lureau Acked-By: Anton Ivanov Signed-off-by: Richard Weinberger

um: Remove some unnecessary NULL checks in vector_user.c

2020-03-29T21:56:47+00:00

kfree() already checks for null pointers, so additional checking is unnecessary. Signed-off-by: Alex Dewar Signed-off-by: Richard Weinberger

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