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net/tls: Describe ciphers sizes by const structs

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Introduce cipher sizes descriptor. It helps reducing the amount of code
duplications and repeated switch/cases that assigns the proper sizes
according to the cipher type.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Tariq Toukan 2022-09-20 16:01:47 +03:00 committed by Jakub Kicinski
parent 8db3d514e9
commit 2d2c5ea242
2 changed files with 27 additions and 0 deletions
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10
include/net/tls.h
View File

@ -51,6 +51,16 @@
struct tls_rec; struct tls_rec;
struct tls_cipher_size_desc {
unsigned int iv;
unsigned int key;
unsigned int salt;
unsigned int tag;
unsigned int rec_seq;
};
extern const struct tls_cipher_size_desc tls_cipher_size_desc[];
/* Maximum data size carried in a TLS record */ /* Maximum data size carried in a TLS record */
#define TLS_MAX_PAYLOAD_SIZE ((size_t)1 << 14) #define TLS_MAX_PAYLOAD_SIZE ((size_t)1 << 14)

17
net/tls/tls_main.c
View File

@ -58,6 +58,23 @@ enum {
TLS_NUM_PROTS, TLS_NUM_PROTS,
}; };
#define CIPHER_SIZE_DESC(cipher) [cipher] = { \
.iv = cipher ## _IV_SIZE, \
.key = cipher ## _KEY_SIZE, \
.salt = cipher ## _SALT_SIZE, \
.tag = cipher ## _TAG_SIZE, \
.rec_seq = cipher ## _REC_SEQ_SIZE, \
}
const struct tls_cipher_size_desc tls_cipher_size_desc[] = {
CIPHER_SIZE_DESC(TLS_CIPHER_AES_GCM_128),
CIPHER_SIZE_DESC(TLS_CIPHER_AES_GCM_256),
CIPHER_SIZE_DESC(TLS_CIPHER_AES_CCM_128),
CIPHER_SIZE_DESC(TLS_CIPHER_CHACHA20_POLY1305),
CIPHER_SIZE_DESC(TLS_CIPHER_SM4_GCM),
CIPHER_SIZE_DESC(TLS_CIPHER_SM4_CCM),
};
static const struct proto *saved_tcpv6_prot; static const struct proto *saved_tcpv6_prot;
static DEFINE_MUTEX(tcpv6_prot_mutex); static DEFINE_MUTEX(tcpv6_prot_mutex);
static const struct proto *saved_tcpv4_prot; static const struct proto *saved_tcpv4_prot;