diff options
| author | Sabrina Dubroca <sd@queasysnail.net> | 2023-10-20 16:00:55 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-23 10:15:09 -0700 |
| commit | b7c4f5730a9fa258c8e79f6387a03f3a95c681a2 (patch) | |
| tree | d9af609b0c7f1087558c6476cd77354cfb18f616 | |
| parent | 6e7ce2d71bb99096d811918341fde61e66bfff2c (diff) | |
tls: don't reset prot->aad_size and prot->tail_size for TLS_HW
Prior to commit 1a074f7618e8 ("tls: also use init_prot_info in
tls_set_device_offload"), setting TLS_HW on TX didn't touch
prot->aad_size and prot->tail_size. They are set to 0 during context
allocation (tls_prot_info is embedded in tls_context, kzalloc'd by
tls_ctx_create).
When the RX key is configured, tls_set_sw_offload is called (for both
TLS_SW and TLS_HW). If the TX key is configured in TLS_HW mode after
the RX key has been installed, init_prot_info will now overwrite the
correct values of aad_size and tail_size, breaking SW decryption and
causing -EBADMSG errors to be returned to userspace.
Since TLS_HW doesn't use aad_size and tail_size at all (for TLS1.2,
tail_size is always 0, and aad_size is equal to TLS_HEADER_SIZE +
rec_seq_size), we can simply drop this hunk.
Fixes: 1a074f7618e8 ("tls: also use init_prot_info in tls_set_device_offload")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Tested-by: Ran Rozenstein <ranro@nvidia.com>
Link: https://lore.kernel.org/r/979d2f89a6a994d5bb49cae49a80be54150d094d.1697653889.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/tls/tls.h | 3 | ||||
| -rw-r--r-- | net/tls/tls_device.c | 2 | ||||
| -rw-r--r-- | net/tls/tls_sw.c | 10 |
3 files changed, 4 insertions, 11 deletions
diff --git a/net/tls/tls.h b/net/tls/tls.h index 478b2c0060aa..762f424ff2d5 100644 --- a/net/tls/tls.h +++ b/net/tls/tls.h @@ -144,8 +144,7 @@ void tls_err_abort(struct sock *sk, int err); int init_prot_info(struct tls_prot_info *prot, const struct tls_crypto_info *crypto_info, - const struct tls_cipher_desc *cipher_desc, - int mode); + const struct tls_cipher_desc *cipher_desc); int tls_set_sw_offload(struct sock *sk, int tx); void tls_update_rx_zc_capable(struct tls_context *tls_ctx); void tls_sw_strparser_arm(struct sock *sk, struct tls_context *ctx); diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c index f01543557a60..bf8ed36b1ad6 100644 --- a/net/tls/tls_device.c +++ b/net/tls/tls_device.c @@ -1099,7 +1099,7 @@ int tls_set_device_offload(struct sock *sk) goto release_netdev; } - rc = init_prot_info(prot, crypto_info, cipher_desc, TLS_HW); + rc = init_prot_info(prot, crypto_info, cipher_desc); if (rc) goto release_netdev; diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index b5905e60d792..a78e8e722409 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -2629,8 +2629,7 @@ static struct tls_sw_context_rx *init_ctx_rx(struct tls_context *ctx) int init_prot_info(struct tls_prot_info *prot, const struct tls_crypto_info *crypto_info, - const struct tls_cipher_desc *cipher_desc, - int mode) + const struct tls_cipher_desc *cipher_desc) { u16 nonce_size = cipher_desc->nonce; @@ -2643,11 +2642,6 @@ int init_prot_info(struct tls_prot_info *prot, prot->tail_size = 0; } - if (mode == TLS_HW) { - prot->aad_size = 0; - prot->tail_size = 0; - } - /* Sanity-check the sizes for stack allocations. */ if (nonce_size > TLS_MAX_IV_SIZE || prot->aad_size > TLS_MAX_AAD_SIZE) return -EINVAL; @@ -2707,7 +2701,7 @@ int tls_set_sw_offload(struct sock *sk, int tx) goto free_priv; } - rc = init_prot_info(prot, crypto_info, cipher_desc, TLS_SW); + rc = init_prot_info(prot, crypto_info, cipher_desc); if (rc) goto free_priv; |