openwrt/target/linux/generic/backport-5.4/080-wireguard-0123-wireguard-kconfig-use-arm-chacha-even-with-no-neon.patch
Jason A. Donenfeld c0cb86e1d5 kernel: 5.4: import wireguard backport
Rather than using the clunky, old, slower wireguard-linux-compat out of
tree module, this commit does a patch-by-patch backport of upstream's
wireguard to 5.4. This specific backport is in widespread use, being
part of SUSE's enterprise kernel, Oracle's enterprise kernel, Google's
Android kernel, Gentoo's distro kernel, and probably more I've forgotten
about. It's definately the "more proper" way of adding wireguard to a
kernel than the ugly compat.h hell of the wireguard-linux-compat repo.
And most importantly for OpenWRT, it allows using the same module
configuration code for 5.10 as for 5.4, with no need for bifurcation.

These patches are from the backport tree which is maintained in the
open here: https://git.zx2c4.com/wireguard-linux/log/?h=backport-5.4.y
I'll be sending PRs to update this as needed.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
(cherry picked from commit 3888fa7880)
(cherry picked from commit d540725871)
(cherry picked from commit 196f3d586f)
(cherry picked from commit 3500fd7938)
(cherry picked from commit 23b801d3ba)
(cherry picked from commit 0c0cb97da7)
(cherry picked from commit 2a27f6f90a)
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
2021-04-10 14:21:32 +02:00

31 lines
1.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Mon, 22 Feb 2021 17:25:49 +0100
Subject: [PATCH] wireguard: kconfig: use arm chacha even with no neon
commit bce2473927af8de12ad131a743f55d69d358c0b9 upstream.
The condition here was incorrect: a non-neon fallback implementation is
available on arm32 when NEON is not supported.
Reported-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
drivers/net/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -87,7 +87,7 @@ config WIREGUARD
select CRYPTO_CURVE25519_X86 if X86 && 64BIT
select ARM_CRYPTO if ARM
select ARM64_CRYPTO if ARM64
- select CRYPTO_CHACHA20_NEON if (ARM || ARM64) && KERNEL_MODE_NEON
+ select CRYPTO_CHACHA20_NEON if ARM || (ARM64 && KERNEL_MODE_NEON)
select CRYPTO_POLY1305_NEON if ARM64 && KERNEL_MODE_NEON
select CRYPTO_POLY1305_ARM if ARM
select CRYPTO_CURVE25519_NEON if ARM && KERNEL_MODE_NEON