net/tls: Support 256 bit keys with TX device offload

Add the missing clause for 256 bit keys in tls_set_device_offload(), and
the needed adjustments in tls_device_fallback.c.

Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index 3f8121b..a03d660 100644 (file)
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -914,6 +914,7 @@ tls_device_reencrypt(struct sock *sk, struct tls_context *tls_ctx)
 
        switch (tls_ctx->crypto_recv.info.cipher_type) {
        case TLS_CIPHER_AES_GCM_128:
+       case TLS_CIPHER_AES_GCM_256:
                break;
        default:
                return -EINVAL;
@@ -1111,6 +1112,11 @@ int tls_set_device_offload(struct sock *sk, struct tls_context *ctx)
                rec_seq =
                 ((struct tls12_crypto_info_aes_gcm_128 *)crypto_info)->rec_seq;
                break;
+       case TLS_CIPHER_AES_GCM_256:
+               iv = ((struct tls12_crypto_info_aes_gcm_256 *)crypto_info)->iv;
+               rec_seq =
+                ((struct tls12_crypto_info_aes_gcm_256 *)crypto_info)->rec_seq;
+               break;
        default:
                rc = -EINVAL;
                goto release_netdev;

diff --git a/net/tls/tls_device_fallback.c b/net/tls/tls_device_fallback.c
index 0d2b651..cdb391a 100644 (file)
--- a/net/tls/tls_device_fallback.c
+++ b/net/tls/tls_device_fallback.c
@@ -64,6 +64,7 @@ static int tls_enc_record(struct aead_request *aead_req,
 
        switch (prot->cipher_type) {
        case TLS_CIPHER_AES_GCM_128:
+       case TLS_CIPHER_AES_GCM_256:
                break;
        default:
                return -EINVAL;
@@ -341,6 +342,9 @@ static struct sk_buff *tls_enc_skb(struct tls_context *tls_ctx,
        case TLS_CIPHER_AES_GCM_128:
                salt = tls_ctx->crypto_send.aes_gcm_128.salt;
                break;
+       case TLS_CIPHER_AES_GCM_256:
+               salt = tls_ctx->crypto_send.aes_gcm_256.salt;
+               break;
        default:
                return NULL;
        }
@@ -484,6 +488,9 @@ int tls_sw_fallback_init(struct sock *sk,
        case TLS_CIPHER_AES_GCM_128:
                key = ((struct tls12_crypto_info_aes_gcm_128 *)crypto_info)->key;
                break;
+       case TLS_CIPHER_AES_GCM_256:
+               key = ((struct tls12_crypto_info_aes_gcm_256 *)crypto_info)->key;
+               break;
        default:
                return -EINVAL;
        }