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Eyal Birger 012d69fbfc vrf: fix packet sniffing for traffic originating from ip tunnels 
in commit 0489390882
("vrf: add mac header for tunneled packets when sniffer is attached")
an Ethernet header was cooked for traffic originating from tunnel devices.

However, the header is added based on whether the mac_header is unset
and ignores cases where the device doesn't expose a mac header to upper
layers, such as in ip tunnels like ipip and gre.

Traffic originating from such devices still appears garbled when capturing
on the vrf device.

Fix by observing whether the original device exposes a header to upper
layers, similar to the logic done in af_packet.

In addition, skb->mac_len needs to be adjusted after adding the Ethernet
header for the skb_push/pull() surrounding dev_queue_xmit_nit() to work
on these packets.

Fixes: 0489390882 ("vrf: add mac header for tunneled packets when sniffer is attached")
Signed-off-by: Eyal Birger <eyal.birger@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-01 11:56:55 +01:00
arch Networking fixes for 5.18-rc1 and rethook patches. 2022-03-31 11:23:31 -07:00
block ptrace: Cleanups for v5.18 2022-03-28 17:29:53 -07:00
certs KEYS: Introduce link restriction for machine keys 2022-03-08 13:55:52 +02:00
crypto for-5.18/64bit-pi-2022-03-25 2022-03-26 12:01:35 -07:00
Documentation Networking fixes for 5.18-rc1 and rethook patches. 2022-03-31 11:23:31 -07:00
drivers vrf: fix packet sniffing for traffic originating from ip tunnels 2022-04-01 11:56:55 +01:00
fs fs: fix fd table size alignment properly 2022-03-29 23:29:18 -07:00
include Networking fixes for 5.18-rc1 and rethook patches. 2022-03-31 11:23:31 -07:00
init Merge branch 'akpm' (patches from Andrew) 2022-03-24 14:14:07 -07:00
ipc fs: allocate inode by using alloc_inode_sb() 2022-03-22 15:57:03 -07:00
kernel Networking fixes for 5.18-rc1 and rethook patches. 2022-03-31 11:23:31 -07:00
lib lib/test: use after free in register_test_dev_kmod() 2022-03-29 15:13:36 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm: page_alloc: validate buddy before check its migratetype. 2022-03-30 15:45:43 -07:00
net net/tls: fix slab-out-of-bounds bug in decrypt_internal 2022-04-01 11:53:35 +01:00
samples dma-mapping updates for Linux 5.18 2022-03-29 08:50:14 -07:00
scripts Driver core changes for 5.18-rc1 2022-03-28 12:41:28 -07:00
security ptrace: Cleanups for v5.18 2022-03-28 17:29:53 -07:00
sound xen: branch for v5.18-rc1 2022-03-28 14:32:39 -07:00
tools Networking fixes for 5.18-rc1 and rethook patches. 2022-03-31 11:23:31 -07:00
usr reiserfs_xattr.h: add linux/reiserfs_xattr.h to UAPI compile-test coverage 2022-02-17 09:09:38 +01:00
virt KVM: compat: riscv: Prevent KVM_COMPAT from being selected 2022-03-11 19:02:15 +05:30
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.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 Char/Misc and other driver updates for 5.18-rc1 2022-03-28 12:27:35 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
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 fixes for 5.18-rc1 and rethook patches. 2022-03-31 11:23:31 -07:00
Makefile array-bounds updates for v5.18-rc1 2022-03-26 12:30:44 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.