netdev - Re: [PATCH] selftests/tls: fix compile errors after adding CHACHA20-POLY1305

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Date:   Wed, 3 Feb 2021 08:58:27 +0800
From:   Rong Chen <rong.a.chen@...el.com>
To:     Vadim Fedorenko <vfedorenko@...ek.ru>,
        Jakub Kicinski <kuba@...nel.org>,
        Boris Pismenny <borisp@...dia.com>,
        Aviad Yehezkel <aviadye@...dia.com>
Cc:     netdev@...r.kernel.org, kernel test robot <oliver.sang@...el.com>
Subject: Re: [PATCH] selftests/tls: fix compile errors after adding
 CHACHA20-POLY1305



On 2/2/21 6:11 PM, Vadim Fedorenko wrote:
> On 02.02.2021 09:45, Rong Chen wrote:
>> The kernel test robot reported the following errors:
>>
>> tls.c: In function ‘tls_setup’:
>> tls.c:136:27: error: storage size of ‘tls12’ isn’t known
>>    union tls_crypto_context tls12;
>>                             ^~~~~
>> tls.c:150:21: error: ‘tls12_crypto_info_chacha20_poly1305’ undeclared 
>> (first use in this function)
>>     tls12_sz = sizeof(tls12_crypto_info_chacha20_poly1305);
>>                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> tls.c:150:21: note: each undeclared identifier is reported only once 
>> for each function it appears in
>> tls.c:153:21: error: ‘tls12_crypto_info_aes_gcm_128’ undeclared 
>> (first use in this function)
>>     tls12_sz = sizeof(tls12_crypto_info_aes_gcm_128);
>>
>> Fixes: 4f336e88a870 ("selftests/tls: add CHACHA20-POLY1305 to tls 
>> selftests")
>> Reported-by: kernel test robot <oliver.sang@...el.com>
>> Link: 
>> https://lore.kernel.org/lkml/20210108064141.GB3437@xsang-OptiPlex-9020/
>> Signed-off-by: Rong Chen <rong.a.chen@...el.com>
>> ---
>>   include/net/tls.h                 | 9 ---------
>>   include/uapi/linux/tls.h          | 9 +++++++++
>>   tools/testing/selftests/net/tls.c | 4 ++--
>>   3 files changed, 11 insertions(+), 11 deletions(-)
>>
>> diff --git a/include/net/tls.h b/include/net/tls.h
>> index 3eccb525e8f7..54f7863ad915 100644
>> --- a/include/net/tls.h
>> +++ b/include/net/tls.h
>> @@ -212,15 +212,6 @@ struct cipher_context {
>>       char *rec_seq;
>>   };
>>   -union tls_crypto_context {
>> -    struct tls_crypto_info info;
>> -    union {
>> -        struct tls12_crypto_info_aes_gcm_128 aes_gcm_128;
>> -        struct tls12_crypto_info_aes_gcm_256 aes_gcm_256;
>> -        struct tls12_crypto_info_chacha20_poly1305 chacha20_poly1305;
>> -    };
>> -};
>> -
>>   struct tls_prot_info {
>>       u16 version;
>>       u16 cipher_type;
>> diff --git a/include/uapi/linux/tls.h b/include/uapi/linux/tls.h
>> index 0d54baea1d8d..9933dd425571 100644
>> --- a/include/uapi/linux/tls.h
>> +++ b/include/uapi/linux/tls.h
>> @@ -124,6 +124,15 @@ struct tls12_crypto_info_chacha20_poly1305 {
>>       unsigned char rec_seq[TLS_CIPHER_CHACHA20_POLY1305_REC_SEQ_SIZE];
>>   };
>>   +union tls_crypto_context {
>> +    struct tls_crypto_info info;
>> +    union {
>> +        struct tls12_crypto_info_aes_gcm_128 aes_gcm_128;
>> +        struct tls12_crypto_info_aes_gcm_256 aes_gcm_256;
>> +        struct tls12_crypto_info_chacha20_poly1305 chacha20_poly1305;
>> +    };
>> +};
>> +
>>   enum {
>>       TLS_INFO_UNSPEC,
>>       TLS_INFO_VERSION,
>> diff --git a/tools/testing/selftests/net/tls.c 
>> b/tools/testing/selftests/net/tls.c
>> index e0088c2d38a5..6951c8524a27 100644
>> --- a/tools/testing/selftests/net/tls.c
>> +++ b/tools/testing/selftests/net/tls.c
>> @@ -147,10 +147,10 @@ FIXTURE_SETUP(tls)
>>       tls12.info.cipher_type = variant->cipher_type;
>>       switch (variant->cipher_type) {
>>       case TLS_CIPHER_CHACHA20_POLY1305:
>> -        tls12_sz = sizeof(tls12_crypto_info_chacha20_poly1305);
>> +        tls12_sz = sizeof(struct tls12_crypto_info_chacha20_poly1305);
>>           break;
>>       case TLS_CIPHER_AES_GCM_128:
>> -        tls12_sz = sizeof(tls12_crypto_info_aes_gcm_128);
>> +        tls12_sz = sizeof(struct tls12_crypto_info_aes_gcm_128);
>>           break;
>>       default:
>>           tls12_sz = 0;
>>
>
> I'm not sure that it's a good idea to move tls_crypto_context to uapi 
> as it's
> an internal union. Previous patches assumes that user-space uses 
> different
> structures for different cipher configurations.

Hi Vadim,

Sorry i don't have the background, could you help to fix these build errors?

Best Regards,
Rong Chen