netdev - [PATCH net-next 1/2] xfrm: add the description of CHACHA20-POLY1305 for xfrm algorithm description

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Date: Wed, 19 Jul 2023 11:18:29 +0200
From: Louis Peens <louis.peens@...igine.com>
To: David Miller <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Cc: Steffen Klassert <steffen.klassert@...unet.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	Leon Romanovsky <leon@...nel.org>,
	Simon Horman <simon.horman@...igine.com>,
	Shihong Wang <shihong.wang@...igine.com>,
	netdev@...r.kernel.org,
	oss-drivers@...igine.com
Subject: [PATCH net-next 1/2] xfrm: add the description of CHACHA20-POLY1305 for xfrm algorithm description

From: Shihong Wang <shihong.wang@...igine.com>

Add the description of CHACHA20-POLY1305 for xfrm algorithm description
and set pfkey_supported to 1 so that xfrm supports that the algorithm
can be offloaded to the NIC.

Signed-off-by: Shihong Wang <shihong.wang@...igine.com>
Acked-by: Simon Horman <simon.horman@...igine.com>
Signed-off-by: Louis Peens <louis.peens@...igine.com>
---
 include/uapi/linux/pfkeyv2.h | 1 +
 net/xfrm/xfrm_algo.c         | 9 ++++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/pfkeyv2.h b/include/uapi/linux/pfkeyv2.h
index 8abae1f6749c..d0ab530e1069 100644
--- a/include/uapi/linux/pfkeyv2.h
+++ b/include/uapi/linux/pfkeyv2.h
@@ -331,6 +331,7 @@ struct sadb_x_filter {
 #define SADB_X_EALG_CAMELLIACBC		22
 #define SADB_X_EALG_NULL_AES_GMAC	23
 #define SADB_X_EALG_SM4CBC		24
+#define SADB_X_EALG_CHACHA20_POLY1305	25
 #define SADB_EALG_MAX                   253 /* last EALG */
 /* private allocations should use 249-255 (RFC2407) */
 #define SADB_X_EALG_SERPENTCBC  252     /* draft-ietf-ipsec-ciph-aes-cbc-00 */
diff --git a/net/xfrm/xfrm_algo.c b/net/xfrm/xfrm_algo.c
index 094734fbec96..140821e9e840 100644
--- a/net/xfrm/xfrm_algo.c
+++ b/net/xfrm/xfrm_algo.c
@@ -167,7 +167,14 @@ static struct xfrm_algo_desc aead_list[] = {
 		}
 	},
 
-	.pfkey_supported = 0,
+	.pfkey_supported = 1,
+
+	.desc = {
+		.sadb_alg_id = SADB_X_EALG_CHACHA20_POLY1305,
+		.sadb_alg_ivlen = 8,
+		.sadb_alg_minbits = 256,
+		.sadb_alg_maxbits = 256
+	}
 },
 };
 
-- 
2.34.1