netdev - [PATCH net-next] wireguard: disable in FIPS mode

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Message-Id: <20210407104307.3731826-1-liuhangbin@gmail.com>
Date:   Wed,  7 Apr 2021 18:43:07 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     netdev@...r.kernel.org
Cc:     "Jason A . Donenfeld" <Jason@...c4.com>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCH net-next] wireguard: disable in FIPS mode

As the cryptos(BLAKE2S, Curve25519, CHACHA20POLY1305) in WireGuard are not
FIPS certified, the WireGuard module should be disabled in FIPS mode.

Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
---
 drivers/net/wireguard/main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireguard/main.c b/drivers/net/wireguard/main.c
index 7a7d5f1a80fc..8a9aaea7623c 100644
--- a/drivers/net/wireguard/main.c
+++ b/drivers/net/wireguard/main.c
@@ -12,6 +12,7 @@
 
 #include <uapi/linux/wireguard.h>
 
+#include <linux/fips.h>
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/genetlink.h>
@@ -21,6 +22,9 @@ static int __init mod_init(void)
 {
 	int ret;
 
+	if (fips_enabled)
+		return -EOPNOTSUPP;
+
 #ifdef DEBUG
 	if (!wg_allowedips_selftest() || !wg_packet_counter_selftest() ||
 	    !wg_ratelimiter_selftest())
-- 
2.26.3