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Cong Wang 0c48eefae7 sock_map: Lift socket state restriction for datagram sockets
TCP and other connection oriented sockets have accept()
for each incoming connection on the server side, hence
they can just insert those fd's from accept() to sockmap,
which are of course established.

Now with datagram sockets begin to support sockmap and
redirection, the restriction is no longer applicable to
them, as they have no accept(). So we have to lift this
restriction for them. This is fine, because inside
bpf_sk_redirect_map() we still have another socket status
check, sock_map_redirect_allowed(), as a guard.

This also means they do not have to be removed from
sockmap when disconnecting.

Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210704190252.11866-3-xiyou.wangcong@gmail.com
2021-07-15 18:17:49 -07:00
arch bpf, x86: Store caller's ip in trampoline stack 2021-07-15 17:16:06 -07:00
block for-5.14/drivers-2021-06-29 2021-06-30 12:21:16 -07:00
certs Kbuild updates for v5.13 (2nd) 2021-05-08 10:00:11 -07:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-06-28 16:04:56 -07:00
Documentation Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
drivers net: dsa: mv88e6xxx: enable SerDes PCS register dump via ethtool -d on Topaz 2021-07-01 11:51:36 -07:00
fs Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
include sock_map: Relax config dependency to CONFIG_NET 2021-07-15 18:17:49 -07:00
init Clang feature updates for v5.14-rc1 2021-06-30 14:33:25 -07:00
ipc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-06-28 20:39:26 -07:00
kernel sock_map: Relax config dependency to CONFIG_NET 2021-07-15 18:17:49 -07:00
lib Merge branch 'akpm' (patches from Andrew) 2021-06-29 17:29:11 -07:00
LICENSES LICENSES: Add the CC-BY-4.0 license 2020-12-08 10:33:27 -07:00
mm for-5.14/block-2021-06-29 2021-06-30 12:12:56 -07:00
net sock_map: Lift socket state restriction for datagram sockets 2021-07-15 18:17:49 -07:00
samples samples/bpf: xdp_redirect_cpu_user: Cpumap qsize set larger default 2021-07-07 20:11:48 -07:00
scripts bpf: Introduce bpf timers. 2021-07-15 22:31:10 +02:00
security One very minor code cleanup change 2021-06-30 15:30:47 -07:00
sound spi: Updates for v5.14 2021-06-28 11:10:20 -07:00
tools sock_map: Lift socket state restriction for datagram sockets 2021-07-15 18:17:49 -07:00
usr .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
virt Merge branch 'akpm' (patches from Andrew) 2021-06-29 17:29:11 -07:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap m68k updates for v5.14 2021-06-28 14:01:03 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: move Murali Karicheri to credits 2021-04-29 15:47:30 -07:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Networking changes for 5.14. 2021-06-30 15:51:09 -07:00
Makefile arm64 updates for 5.14 2021-06-28 14:04:24 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.