tls: don't reset prot->aad_size and prot->tail_size for TLS_HW
Prior to commit1a074f7618
("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:1a074f7618
("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>
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@ -144,8 +144,7 @@ void tls_err_abort(struct sock *sk, int err);
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int init_prot_info(struct tls_prot_info *prot,
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int init_prot_info(struct tls_prot_info *prot,
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const struct tls_crypto_info *crypto_info,
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const struct tls_crypto_info *crypto_info,
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const struct tls_cipher_desc *cipher_desc,
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const struct tls_cipher_desc *cipher_desc);
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int mode);
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int tls_set_sw_offload(struct sock *sk, int tx);
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int tls_set_sw_offload(struct sock *sk, int tx);
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void tls_update_rx_zc_capable(struct tls_context *tls_ctx);
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void tls_update_rx_zc_capable(struct tls_context *tls_ctx);
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void tls_sw_strparser_arm(struct sock *sk, struct tls_context *ctx);
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void tls_sw_strparser_arm(struct sock *sk, struct tls_context *ctx);
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@ -1099,7 +1099,7 @@ int tls_set_device_offload(struct sock *sk)
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goto release_netdev;
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goto release_netdev;
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}
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}
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rc = init_prot_info(prot, crypto_info, cipher_desc, TLS_HW);
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rc = init_prot_info(prot, crypto_info, cipher_desc);
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if (rc)
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if (rc)
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goto release_netdev;
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goto release_netdev;
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@ -2629,8 +2629,7 @@ static struct tls_sw_context_rx *init_ctx_rx(struct tls_context *ctx)
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int init_prot_info(struct tls_prot_info *prot,
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int init_prot_info(struct tls_prot_info *prot,
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const struct tls_crypto_info *crypto_info,
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const struct tls_crypto_info *crypto_info,
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const struct tls_cipher_desc *cipher_desc,
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const struct tls_cipher_desc *cipher_desc)
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int mode)
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{
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{
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u16 nonce_size = cipher_desc->nonce;
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u16 nonce_size = cipher_desc->nonce;
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@ -2643,11 +2642,6 @@ int init_prot_info(struct tls_prot_info *prot,
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prot->tail_size = 0;
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prot->tail_size = 0;
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}
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}
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if (mode == TLS_HW) {
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prot->aad_size = 0;
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prot->tail_size = 0;
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}
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/* Sanity-check the sizes for stack allocations. */
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/* Sanity-check the sizes for stack allocations. */
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if (nonce_size > TLS_MAX_IV_SIZE || prot->aad_size > TLS_MAX_AAD_SIZE)
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if (nonce_size > TLS_MAX_IV_SIZE || prot->aad_size > TLS_MAX_AAD_SIZE)
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return -EINVAL;
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return -EINVAL;
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@ -2707,7 +2701,7 @@ int tls_set_sw_offload(struct sock *sk, int tx)
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goto free_priv;
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goto free_priv;
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}
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}
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rc = init_prot_info(prot, crypto_info, cipher_desc, TLS_SW);
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rc = init_prot_info(prot, crypto_info, cipher_desc);
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if (rc)
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if (rc)
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goto free_priv;
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goto free_priv;
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