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Jianbo Liu 55c9312830 xfrm: Determine inner GSO type from packet inner protocol
[ Upstream commit 61fafbee6c ]

The GSO segmentation functions for ESP tunnel mode
(xfrm4_tunnel_gso_segment and xfrm6_tunnel_gso_segment) were
determining the inner packet's L2 protocol type by checking the static
x->inner_mode.family field from the xfrm state.

This is unreliable. In tunnel mode, the state's actual inner family
could be defined by x->inner_mode.family or by
x->inner_mode_iaf.family. Checking only the former can lead to a
mismatch with the actual packet being processed, causing GSO to create
segments with the wrong L2 header type.

This patch fixes the bug by deriving the inner mode directly from the
packet's inner protocol stored in XFRM_MODE_SKB_CB(skb)->protocol.

Instead of replicating the code, this patch modifies the
xfrm_ip2inner_mode helper function. It now correctly returns
&x->inner_mode if the selector family (x->sel.family) is already
specified, thereby handling both specific and AF_UNSPEC cases
appropriately.

With this change, ESP GSO can use xfrm_ip2inner_mode to get the
correct inner mode. It doesn't affect existing callers, as the updated
logic now mirrors the checks they were already performing externally.

Fixes: 26dbd66eab ("esp: choose the correct inner protocol for GSO on inter address family tunnels")
Signed-off-by: Jianbo Liu <jianbol@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-12-07 06:12:38 +09:00
arch LoongArch: Don't panic if no valid cache info for PCI 2025-12-07 06:12:38 +09:00
block block: fix race between set_blocksize and read paths 2025-12-07 06:12:14 +09:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2025-04-25 10:44:04 +02:00
crypto crypto: essiv - Check ssize for decryption and in-place encryption 2025-10-19 16:23:10 +02:00
Documentation xhci: dbc: Allow users to modify DbC poll interval via sysfs 2025-12-07 06:12:10 +09:00
drivers drm/amdgpu: Skip emit de meta data on gfx11 with rs64 enabled 2025-12-07 06:12:38 +09:00
fs exfat: check return value of sb_min_blocksize in exfat_read_boot_sector 2025-12-07 06:12:37 +09:00
include xfrm: Determine inner GSO type from packet inner protocol 2025-12-07 06:12:38 +09:00
init init: handle bootloader identifier in kernel parameters 2025-10-19 16:23:13 +02:00
io_uring io_uring: correct __must_hold annotation in io_install_fixed_file 2025-10-29 14:04:38 +01:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:07:30 +01:00
kernel timers: Fix NULL function pointer race in timer_shutdown_sync() 2025-12-07 06:12:37 +09:00
lib lib/crypto: curve25519-hacl64: Fix older clang KASAN workaround for GCC 2025-12-07 06:12:30 +09:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm, percpu: do not consider sleepable allocations atomic 2025-12-07 06:12:36 +09:00
net xfrm: Determine inner GSO type from packet inner protocol 2025-12-07 06:12:38 +09:00
rust mm/ksm: fix flag-dropping behavior in ksm_madvise 2025-10-29 14:04:43 +01:00
samples ftrace/samples: Fix function size computation 2025-09-19 16:29:56 +02:00
scripts gcc-plugins: Remove TODO_verify_il for GCC >= 16 2025-10-15 11:56:20 +02:00
security KEYS: trusted_tpm1: Compare HMAC values in constant time 2025-10-19 16:23:14 +02:00
sound ALSA: usb-audio: Fix missing unlock at error path of maxpacksize check 2025-12-07 06:12:35 +09:00
tools asm-generic: partially revert "Unify uapi bitsperlong.h for arm64, riscv and loongarch" 2025-12-07 06:12:36 +09:00
usr kbuild: uapi: Strip comments before size type check 2025-12-07 06:12:28 +09:00
virt KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin() 2024-06-27 13:46:21 +02:00
.clang-format inet: ping: use hlist_nulls rcu iterator during lookup 2022-12-01 12:42:46 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore Remove *.orig pattern from .gitignore 2024-10-17 15:21:15 +02:00
.mailmap 9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address 2022-12-10 17:10:52 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove Michal Marek from Kbuild maintainers 2022-11-16 14:53:00 +09:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS netdevsim: add Makefile for selftests 2025-12-07 06:12:29 +09:00
Makefile Linux 6.1.158 2025-10-29 14:04:43 +01:00
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.