diff options
| author | Tianjia Zhang | 2021-11-29 19:10:14 +0800 |
|---|---|---|
| committer | David S. Miller | 2021-11-30 11:58:34 +0000 |
| commit | dc2724a64e72429856fc22d8eb015225af63129e (patch) | |
| tree | 58fd3292051f6d021f093528026a7bcf4c948464 /net/tls | |
| parent | 4047b9db1aa7512a10ba3560a3f63821c8c40235 (diff) | |
net/tls: simplify the tls_set_sw_offload function
Assigning crypto_info variables in advance can simplify the logic
of accessing value and move related local variables to a smaller
scope.
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tls')
| -rw-r--r-- | net/tls/tls_sw.c | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index d3e7ff90889e..7404d094f2d1 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -2328,10 +2328,6 @@ int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx) struct tls_context *tls_ctx = tls_get_ctx(sk); struct tls_prot_info *prot = &tls_ctx->prot_info; struct tls_crypto_info *crypto_info; - 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; @@ -2394,15 +2390,15 @@ int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx) switch (crypto_info->cipher_type) { case TLS_CIPHER_AES_GCM_128: { + struct tls12_crypto_info_aes_gcm_128 *gcm_128_info; + + gcm_128_info = (void *)crypto_info; nonce_size = TLS_CIPHER_AES_GCM_128_IV_SIZE; tag_size = TLS_CIPHER_AES_GCM_128_TAG_SIZE; iv_size = TLS_CIPHER_AES_GCM_128_IV_SIZE; - iv = ((struct tls12_crypto_info_aes_gcm_128 *)crypto_info)->iv; + iv = gcm_128_info->iv; rec_seq_size = TLS_CIPHER_AES_GCM_128_REC_SEQ_SIZE; - rec_seq = - ((struct tls12_crypto_info_aes_gcm_128 *)crypto_info)->rec_seq; - gcm_128_info = - (struct tls12_crypto_info_aes_gcm_128 *)crypto_info; + rec_seq = gcm_128_info->rec_seq; keysize = TLS_CIPHER_AES_GCM_128_KEY_SIZE; key = gcm_128_info->key; salt = gcm_128_info->salt; @@ -2411,15 +2407,15 @@ int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx) break; } case TLS_CIPHER_AES_GCM_256: { + struct tls12_crypto_info_aes_gcm_256 *gcm_256_info; + + gcm_256_info = (void *)crypto_info; nonce_size = TLS_CIPHER_AES_GCM_256_IV_SIZE; tag_size = TLS_CIPHER_AES_GCM_256_TAG_SIZE; iv_size = TLS_CIPHER_AES_GCM_256_IV_SIZE; - iv = ((struct tls12_crypto_info_aes_gcm_256 *)crypto_info)->iv; + iv = gcm_256_info->iv; rec_seq_size = TLS_CIPHER_AES_GCM_256_REC_SEQ_SIZE; - rec_seq = - ((struct tls12_crypto_info_aes_gcm_256 *)crypto_info)->rec_seq; - gcm_256_info = - (struct tls12_crypto_info_aes_gcm_256 *)crypto_info; + rec_seq = gcm_256_info->rec_seq; keysize = TLS_CIPHER_AES_GCM_256_KEY_SIZE; key = gcm_256_info->key; salt = gcm_256_info->salt; @@ -2428,15 +2424,15 @@ int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx) break; } case TLS_CIPHER_AES_CCM_128: { + struct tls12_crypto_info_aes_ccm_128 *ccm_128_info; + + ccm_128_info = (void *)crypto_info; nonce_size = TLS_CIPHER_AES_CCM_128_IV_SIZE; tag_size = TLS_CIPHER_AES_CCM_128_TAG_SIZE; iv_size = TLS_CIPHER_AES_CCM_128_IV_SIZE; - iv = ((struct tls12_crypto_info_aes_ccm_128 *)crypto_info)->iv; + iv = ccm_128_info->iv; rec_seq_size = TLS_CIPHER_AES_CCM_128_REC_SEQ_SIZE; - rec_seq = - ((struct tls12_crypto_info_aes_ccm_128 *)crypto_info)->rec_seq; - ccm_128_info = - (struct tls12_crypto_info_aes_ccm_128 *)crypto_info; + rec_seq = ccm_128_info->rec_seq; keysize = TLS_CIPHER_AES_CCM_128_KEY_SIZE; key = ccm_128_info->key; salt = ccm_128_info->salt; @@ -2445,6 +2441,8 @@ int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx) break; } case TLS_CIPHER_CHACHA20_POLY1305: { + struct tls12_crypto_info_chacha20_poly1305 *chacha20_poly1305_info; + chacha20_poly1305_info = (void *)crypto_info; nonce_size = 0; tag_size = TLS_CIPHER_CHACHA20_POLY1305_TAG_SIZE; |