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Magnus Karlsson b5aea28dca xsk: Add shared umem support between queue ids
Add support to share a umem between queue ids on the same
device. This mode can be invoked with the XDP_SHARED_UMEM bind
flag. Previously, sharing was only supported within the same
queue id and device, and you shared one set of fill and
completion rings. However, note that when sharing a umem between
queue ids, you need to create a fill ring and a completion ring
and tie them to the socket before you do the bind with the
XDP_SHARED_UMEM flag. This so that the single-producer
single-consumer semantics can be upheld.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Link: https://lore.kernel.org/bpf/1598603189-32145-12-git-send-email-magnus.karlsson@intel.com
2020-08-31 21:15:04 +02:00
arch bpf: Introduce sleepable BPF programs 2020-08-28 21:20:33 +02:00
block block-5.9-2020-08-14 2020-08-15 20:36:42 -07:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-08-14 13:09:15 -07:00
Documentation bpf: Update .BTF_ids section in btf.rst with sets info 2020-08-25 15:41:15 -07:00
drivers xsk: i40e: ice: ixgbe: mlx5: Test for dma_need_sync earlier for better performance 2020-08-31 21:15:04 +02:00
fs io_uring-5.9-2020-08-15 2020-08-16 10:55:12 -07:00
include xsk: Add shared umem support between queue ids 2020-08-31 21:15:04 +02:00
init bpf: Introduce sleepable BPF programs 2020-08-28 21:20:33 +02:00
ipc ipc/shm.c: remove the superfluous break 2020-08-12 10:58:02 -07:00
kernel bpf: Fix build without BPF_LSM. 2020-08-31 20:56:10 +02:00
lib netlink: make NLA_BINARY validation more flexible 2020-08-18 12:28:45 -07:00
LICENSES
mm mm/error_inject: Fix allow_error_inject function signatures. 2020-08-28 21:20:32 +02:00
net xsk: Add shared umem support between queue ids 2020-08-31 21:15:04 +02:00
samples samples: bpf: Refactor tracepoint tracing programs with libbpf 2020-08-24 20:59:35 -07:00
scripts bpf: Add d_path helper 2020-08-25 15:41:15 -07:00
security bpf: Implement bpf_local_storage for inodes 2020-08-25 15:00:04 -07:00
sound sound fixes for 5.9-rc1 2020-08-14 15:58:57 -07:00
tools selftests/bpf: Add sleepable tests 2020-08-28 21:20:33 +02:00
usr Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
virt Merge branch 'akpm' (patches from Andrew) 2020-08-12 11:24:12 -07:00
.clang-format block: add bio_for_each_bvec_all() 2020-05-25 11:25:24 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore .gitignore: Add ZSTD-compressed files 2020-07-31 11:50:49 +02:00
.mailmap mailmap: Add WeiXiong Liao 2020-08-17 14:32:44 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS CREDITS: Replace HTTP links with HTTPS ones 2020-07-23 14:53:58 -06:00
Kbuild
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS perf tools changes for v5.9: 2nd batch 2020-08-15 11:17:15 -07:00
Makefile Linux 5.9-rc1 2020-08-16 13:04:57 -07:00
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.