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tls: validate cipher descriptions at compile time

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Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://lore.kernel.org/r/b38fb8cf60e099e82ae9979c3c9c92421042417c.1692977948.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Sabrina Dubroca 2023-08-25 23:35:14 +02:00 committed by Jakub Kicinski
parent 176a3f50bc
commit 0d98cc0202
1 changed files with 18 additions and 0 deletions
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18
net/tls/tls_main.c
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@ -58,6 +58,15 @@ enum {
TLS_NUM_PROTS,
};
#define CHECK_CIPHER_DESC(cipher,ci) \
static_assert(cipher ## _IV_SIZE <= MAX_IV_SIZE); \
static_assert(cipher ## _REC_SEQ_SIZE <= TLS_MAX_REC_SEQ_SIZE); \
static_assert(cipher ## _TAG_SIZE == TLS_TAG_SIZE); \
static_assert(sizeof_field(struct ci, iv) == cipher ## _IV_SIZE); \
static_assert(sizeof_field(struct ci, key) == cipher ## _KEY_SIZE); \
static_assert(sizeof_field(struct ci, salt) == cipher ## _SALT_SIZE); \
static_assert(sizeof_field(struct ci, rec_seq) == cipher ## _REC_SEQ_SIZE);
#define __CIPHER_DESC(ci) \
.iv_offset = offsetof(struct ci, iv), \
.key_offset = offsetof(struct ci, key), \
@ -100,6 +109,15 @@ const struct tls_cipher_desc tls_cipher_desc[TLS_CIPHER_MAX + 1 - TLS_CIPHER_MIN
CIPHER_DESC(TLS_CIPHER_ARIA_GCM_256, tls12_crypto_info_aria_gcm_256, "gcm(aria)", false),
};
CHECK_CIPHER_DESC(TLS_CIPHER_AES_GCM_128, tls12_crypto_info_aes_gcm_128);
CHECK_CIPHER_DESC(TLS_CIPHER_AES_GCM_256, tls12_crypto_info_aes_gcm_256);
CHECK_CIPHER_DESC(TLS_CIPHER_AES_CCM_128, tls12_crypto_info_aes_ccm_128);
CHECK_CIPHER_DESC(TLS_CIPHER_CHACHA20_POLY1305, tls12_crypto_info_chacha20_poly1305);
CHECK_CIPHER_DESC(TLS_CIPHER_SM4_GCM, tls12_crypto_info_sm4_gcm);
CHECK_CIPHER_DESC(TLS_CIPHER_SM4_CCM, tls12_crypto_info_sm4_ccm);
CHECK_CIPHER_DESC(TLS_CIPHER_ARIA_GCM_128, tls12_crypto_info_aria_gcm_128);
CHECK_CIPHER_DESC(TLS_CIPHER_ARIA_GCM_256, tls12_crypto_info_aria_gcm_256);
static const struct proto *saved_tcpv6_prot;
static DEFINE_MUTEX(tcpv6_prot_mutex);
static const struct proto *saved_tcpv4_prot;