[net-next 4/5] net/tls: add CHACHA20-POLY1305 configuration

[Vadim Fedorenko]

Add ChaCha-Poly specific configuration code.

Signed-off-by: Vadim Fedorenko <vfedore...@novek.ru>
---
 net/tls/tls_main.c |  3 +++
 net/tls/tls_sw.c   | 18 ++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index 8d93cea..47b7c53 100644
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -521,6 +521,9 @@ static int do_tls_setsockopt_conf(struct sock *sk, 
sockptr_t optval,
        case TLS_CIPHER_AES_CCM_128:
                optsize = sizeof(struct tls12_crypto_info_aes_ccm_128);
                break;
+       case TLS_CIPHER_CHACHA20_POLY1305:
+               optsize = sizeof(struct tls12_crypto_info_chacha20_poly1305);
+               break;
        default:
                rc = -EINVAL;
                goto err_crypto_info;
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index b4eefdb..6bb33d5 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -2290,6 +2290,7 @@ int tls_set_sw_offload(struct sock *sk, struct 
tls_context *ctx, int tx)
        struct tls12_crypto_info_aes_gcm_128 *gcm_128_info;
        struct tls12_crypto_info_aes_gcm_256 *gcm_256_info;
        struct tls12_crypto_info_aes_ccm_128 *ccm_128_info;
+       struct tls12_crypto_info_chacha20_poly1305 *chacha20_poly1305_info;
        struct tls_sw_context_tx *sw_ctx_tx = NULL;
        struct tls_sw_context_rx *sw_ctx_rx = NULL;
        struct cipher_context *cctx;
@@ -2402,6 +2403,23 @@ int tls_set_sw_offload(struct sock *sk, struct 
tls_context *ctx, int tx)
                cipher_name = "ccm(aes)";
                break;
        }
+       case TLS_CIPHER_CHACHA20_POLY1305: {
+               nonce_size = 0;
+               tag_size = TLS_CIPHER_CHACHA20_POLY1305_TAG_SIZE;
+               iv_size = TLS_CIPHER_CHACHA20_POLY1305_IV_SIZE;
+               iv = ((struct tls12_crypto_info_chacha20_poly1305 
*)crypto_info)->iv;
+               rec_seq_size = TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE;
+               rec_seq =
+               ((struct tls12_crypto_info_chacha20_poly1305 
*)crypto_info)->rec_seq;
+               chacha20_poly1305_info =
+               (struct tls12_crypto_info_chacha20_poly1305 *)crypto_info;
+               keysize = TLS_CIPHER_CHACHA20_POLY1305_KEY_SIZE;
+               key = chacha20_poly1305_info->key;
+               salt = chacha20_poly1305_info->salt;
+               salt_size = TLS_CIPHER_CHACHA20_POLY1305_SALT_SIZE;
+               cipher_name = "rfc7539(chacha20,poly1305)";
+               break;
+       }
        default:
                rc = -EINVAL;
                goto free_priv;
-- 
1.8.3.1