netdev - Re: [PATCH net-next v6 7/8] net/funeth: add kTLS TX control part

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Date:   Wed, 12 Jan 2022 14:40:13 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Dimitris Michailidis <d.michailidis@...gible.com>
Cc:     davem@...emloft.net, netdev@...r.kernel.org, andrew@...n.ch
Subject: Re: [PATCH net-next v6 7/8] net/funeth: add kTLS TX control part

On Wed, 12 Jan 2022 14:35:32 -0800 Jakub Kicinski wrote:
> > +	if (crypto_info->version == TLS_1_2_VERSION)
> > +		req.version = FUN_KTLS_TLSV2;
> > +	else if (crypto_info->version == TLS_1_3_VERSION)
> > +		req.version = FUN_KTLS_TLSV3;  

I don't think offload of TLS 1.3 is supported by the kernel.

> > +	else
> > +		return -EOPNOTSUPP;
> > +
> > +	switch (crypto_info->cipher_type) {
> > +	case TLS_CIPHER_AES_GCM_128: {
> > +		struct tls12_crypto_info_aes_gcm_128 *c = (void *)crypto_info;
> > +
> > +		req.cipher = FUN_KTLS_CIPHER_AES_GCM_128;
> > +		memcpy(req.key, c->key, sizeof(c->key));
> > +		memcpy(req.iv, c->iv, sizeof(c->iv));
> > +		memcpy(req.salt, c->salt, sizeof(c->salt));
> > +		memcpy(req.record_seq, c->rec_seq, sizeof(c->rec_seq));
> > +		break;
> > +	}

Neither are all the algos below. Please remove dead code.

> > +	case TLS_CIPHER_AES_GCM_256: {
> > +		struct tls12_crypto_info_aes_gcm_256 *c = (void *)crypto_info;
> > +
> > +		req.cipher = FUN_KTLS_CIPHER_AES_GCM_256;
> > +		memcpy(req.key, c->key, sizeof(c->key));
> > +		memcpy(req.iv, c->iv, sizeof(c->iv));
> > +		memcpy(req.salt, c->salt, sizeof(c->salt));
> > +		memcpy(req.record_seq, c->rec_seq, sizeof(c->rec_seq));
> > +		break;
> > +	}
> > +
> > +	case TLS_CIPHER_CHACHA20_POLY1305: {
> > +		struct tls12_crypto_info_chacha20_poly1305 *c;
> > +
> > +		c = (void *)crypto_info;
> > +		req.cipher = FUN_KTLS_CIPHER_CHACHA20_POLY1305;
> > +		memcpy(req.key, c->key, sizeof(c->key));
> > +		memcpy(req.iv, c->iv, sizeof(c->iv));
> > +		memcpy(req.salt, c->salt, sizeof(c->salt));
> > +		memcpy(req.record_seq, c->rec_seq, sizeof(c->rec_seq));
> > +		break;
> > +	}