linux-stable.git/net/Makefile, branch v5.11

wimax: move out to staging

2020-10-29T18:27:45+00:00

There are no known users of this driver as of October 2020, and it will
be removed unless someone turns out to still need it in future releases.

According to https://en.wikipedia.org/wiki/List_of_WiMAX_networks, there
have been many public wimax networks, but it appears that many of these
have migrated to LTE or discontinued their service altogether.
As most PCs and phones lack WiMAX hardware support, the remaining
networks tend to use standalone routers. These almost certainly
run Linux, but not a modern kernel or the mainline wimax driver stack.

NetworkManager appears to have dropped userspace support in 2015
https://bugzilla.gnome.org/show_bug.cgi?id=747846, the
www.linuxwimax.org
site had already shut down earlier.

WiMax is apparently still being deployed on airport campus networks
("AeroMACS"), but in a frequency band that was not supported by the old
Intel 2400m (used in Sandy Bridge laptops and earlier), which is the
only driver using the kernel's wimax stack.

Move all files into drivers/staging/wimax, including the uapi header
files and documentation, to make it easier to remove it when it gets
to that. Only minimal changes are made to the source files, in order
to make it possible to port patches across the move.

Also remove the MAINTAINERS entry that refers to a broken mailing
list and website.

Acked-by: Jakub Kicinski 
Acked-by: Greg Kroah-Hartman 
Acked-By: Inaky Perez-Gonzalez 
Acked-by: Johannes Berg 
Suggested-by: Inaky Perez-Gonzalez 
Signed-off-by: Arnd Bergmann

net: move devres helpers into a separate source file

2020-05-23T23:56:17+00:00

There's currently only a single devres helper in net/ - devm variant
of alloc_etherdev. Let's move it to net/devres.c with the intention of
assing a second one: devm_register_netdev(). This new routine will need
to know the address of the release function of devm_alloc_etherdev() so
that it can verify (using devres_find()) that the struct net_device
that's being passed to it is also resource managed.

Signed-off-by: Bartosz Golaszewski 
Signed-off-by: David S. Miller

mptcp: Add MPTCP socket stubs

2020-01-24T12:44:07+00:00

Implements the infrastructure for MPTCP sockets.

MPTCP sockets open one in-kernel TCP socket per subflow. These subflow
sockets are only managed by the MPTCP socket that owns them and are not
visible from userspace. This commit allows a userspace program to open
an MPTCP socket with:

  sock = socket(AF_INET, SOCK_STREAM, IPPROTO_MPTCP);

The resulting socket is simply a wrapper around a single regular TCP
socket, without any of the MPTCP protocol implemented over the wire.

Co-developed-by: Florian Westphal 
Signed-off-by: Florian Westphal 
Co-developed-by: Peter Krystad 
Signed-off-by: Peter Krystad 
Co-developed-by: Matthieu Baerts 
Signed-off-by: Matthieu Baerts 
Co-developed-by: Paolo Abeni 
Signed-off-by: Paolo Abeni 
Signed-off-by: Mat Martineau 
Signed-off-by: Christoph Paasch 
Signed-off-by: David S. Miller

ethtool: move to its own directory

2019-12-13T01:07:05+00:00

The ethtool netlink interface is going to be split into multiple files so
that it will be more convenient to put all of them in a separate directory
net/ethtool. Start by moving current ethtool.c with ioctl interface into
this directory and renaming it to ioctl.c.

Signed-off-by: Michal Kubecek 
Acked-by: Jiri Pirko 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: split out functions related to registering inflight socket files

2019-02-28T15:24:23+00:00

We need this functionality for the io_uring file registration, but
we cannot rely on it since CONFIG_UNIX can be modular. Move the helpers
to a separate file, that's always builtin to the kernel if CONFIG_UNIX is
m/y.

No functional changes in this patch, just moving code around.

Reviewed-by: Hannes Reinecke 
Acked-by: David S. Miller 
Signed-off-by: Jens Axboe

bpfilter: check compiler capability in Kconfig

2018-06-28T04:36:39+00:00

With the brand-new syntax extension of Kconfig, we can directly
check the compiler capability in the configuration phase.

If the cc-can-link.sh fails, the BPFILTER_UMH is automatically
hidden by the dependency.

I also deleted 'default n', which is no-op.

Signed-off-by: Masahiro Yamada 
Acked-by: Daniel Borkmann 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

bpfilter: switch to CC from HOSTCC

2018-06-05T14:21:18+00:00

check that CC can build executables and use that compiler instead of HOSTCC

Suggested-by: Arnd Bergmann 
Signed-off-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

net: add skeleton of bpfilter kernel module

2018-05-23T17:23:40+00:00

bpfilter.ko consists of bpfilter_kern.c (normal kernel module code)
and user mode helper code that is embedded into bpfilter.ko

The steps to build bpfilter.ko are the following:
- main.c is compiled by HOSTCC into the bpfilter_umh elf executable file
- with quite a bit of objcopy and Makefile magic the bpfilter_umh elf file
  is converted into bpfilter_umh.o object file
  with _binary_net_bpfilter_bpfilter_umh_start and _end symbols
  Example:
  $ nm ./bld_x64/net/bpfilter/bpfilter_umh.o
  0000000000004cf8 T _binary_net_bpfilter_bpfilter_umh_end
  0000000000004cf8 A _binary_net_bpfilter_bpfilter_umh_size
  0000000000000000 T _binary_net_bpfilter_bpfilter_umh_start
- bpfilter_umh.o and bpfilter_kern.o are linked together into bpfilter.ko

bpfilter_kern.c is a normal kernel module code that calls
the fork_usermode_blob() helper to execute part of its own data
as a user mode process.

Notice that _binary_net_bpfilter_bpfilter_umh_start - end
is placed into .init.rodata section, so it's freed as soon as __init
function of bpfilter.ko is finished.
As part of __init the bpfilter.ko does first request/reply action
via two unix pipe provided by fork_usermode_blob() helper to
make sure that umh is healthy. If not it will kill it via pid.

Later bpfilter_process_sockopt() will be called from bpfilter hooks
in get/setsockopt() to pass iptable commands into umh via bpfilter.ko

If admin does 'rmmod bpfilter' the __exit code bpfilter.ko will
kill umh as well.

Signed-off-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

xsk: add user memory registration support sockopt

2018-05-03T22:55:23+00:00

In this commit the base structure of the AF_XDP address family is set
up. Further, we introduce the abilty register a window of user memory
to the kernel via the XDP_UMEM_REG setsockopt syscall. The memory
window is viewed by an AF_XDP socket as a set of equally large
frames. After a user memory registration all frames are "owned" by the
user application, and not the kernel.

v2: More robust checks on umem creation and unaccount on error.
    Call set_page_dirty_lock on cleanup.
    Simplified xdp_umem_reg.

Co-authored-by: Magnus Karlsson 
Signed-off-by: Magnus Karlsson 
Signed-off-by: Björn Töpel 
Signed-off-by: Alexei Starovoitov

ipx: move Novell IPX protocol support into staging

2017-11-28T12:55:00+00:00

The Netware IPX protocol is very old and no one should still be using
it. It is time to move it into staging for a while and eventually
decommision it.

Signed-off-by: Stephen Hemminger 
Acked-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman