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Antonio Quartulli e5dd729460 ip/ip6_gre: use the same logic as SIT interfaces when computing v6LL address
GRE interfaces are not Ether-like and therefore it is not
possible to generate the v6LL address the same way as (for example)
GRETAP devices.

With default settings, a GRE interface will attempt generating its v6LL
address using the EUI64 approach, but this will fail when the local
endpoint of the GRE tunnel is set to "any". In this case the GRE
interface will end up with no v6LL address, thus violating RFC4291.

SIT interfaces already implement a different logic to ensure that a v6LL
address is always computed.

Change the GRE v6LL generation logic to follow the same approach as SIT.
This way GRE interfaces will always have a v6LL address as well.

Behaviour of GRETAP interfaces has not been changed as they behave like
classic Ether-like interfaces.

To avoid code duplication sit_add_v4_addrs() has been renamed to
add_v4_addrs() and adapted to handle also the IP6GRE/GRE cases.

Signed-off-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-09-05 13:14:37 +01:00
arch Core: 2021-08-31 16:43:06 -07:00
block for-5.15-tag 2021-08-31 09:41:22 -07:00
certs certs: Add support for using elliptic curve keys for signing modules 2021-08-23 19:55:42 +03:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-08-30 12:57:10 -07:00
Documentation Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2021-09-03 16:20:37 -07:00
drivers net: stmmac: Fix overall budget calculation for rxtx_napi 2021-09-05 13:02:20 +01:00
fs fs.close_range.v5.15 2021-08-31 12:00:07 -07:00
include fq_codel: reject silly quantum parameters 2021-09-04 10:49:46 +01:00
init Core: 2021-08-31 16:43:06 -07:00
ipc Merge branch 'akpm' (patches from Andrew) 2021-07-02 12:08:10 -07:00
kernel Core: 2021-08-31 16:43:06 -07:00
lib Core: 2021-08-31 16:43:06 -07:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
mm Core: 2021-08-31 16:43:06 -07:00
net ip/ip6_gre: use the same logic as SIT interfaces when computing v6LL address 2021-09-05 13:14:37 +01:00
samples Core: 2021-08-31 16:43:06 -07:00
scripts Core: 2021-08-31 16:43:06 -07:00
security Core: 2021-08-31 16:43:06 -07:00
sound another sound-fixes for 5.14-rc7 2021-08-20 12:31:10 -07:00
tools selftests: add simple GSO GRE test 2021-09-02 11:33:28 +01:00
usr .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
virt KVM: Do not leak memory for duplicate debugfs directories 2021-08-04 06:02:03 -04:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig
.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 mailmap: update email address of Matthias Fuchs and Thomas Körper 2021-08-19 09:39:44 +02:00
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 Core: 2021-08-31 16:43:06 -07:00
Makefile Linux 5.14 2021-08-29 15:04:50 -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.