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Toke Høiland-Jørgensen 6f9d451ab1 xdp: Add devmap_hash map type for looking up devices by hashed index
A common pattern when using xdp_redirect_map() is to create a device map
where the lookup key is simply ifindex. Because device maps are arrays,
this leaves holes in the map, and the map has to be sized to fit the
largest ifindex, regardless of how many devices actually are actually
needed in the map.

This patch adds a second type of device map where the key is looked up
using a hashmap, instead of being used as an array index. This allows maps
to be densely packed, so they can be smaller.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-07-29 13:50:48 -07:00
arch
block
certs
crypto
Documentation bpf/flow_dissector: document flags 2019-07-25 18:00:41 -07:00
drivers nfp: flower: offload MPLS set action 2019-07-23 13:52:51 -07:00
fs
include xdp: Add devmap_hash map type for looking up devices by hashed index 2019-07-29 13:50:48 -07:00
init
ipc
kernel xdp: Add devmap_hash map type for looking up devices by hashed index 2019-07-29 13:50:48 -07:00
lib
LICENSES
mm
net xdp: Add devmap_hash map type for looking up devices by hashed index 2019-07-29 13:50:48 -07:00
samples samples/bpf: switch trace_output sample to perf_buffer API 2019-07-23 16:05:42 -07:00
scripts
security
sound
tools selftests/bpf: convert send_signal.c to use subtests 2019-07-27 22:36:19 -07:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS qlge: Move drivers/net/ethernet/qlogic/qlge/ to drivers/staging/qlge/ 2019-07-23 11:29:40 -07:00
Makefile
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.