From: Stephan Mueller <smueller@chronox.de>
To: Mat Martineau <mathew.j.martineau@linux.intel.com>
Cc: Tadeusz Struk <tadeusz.struk@intel.com>,
dhowells@redhat.com, herbert@gondor.apana.org.au,
linux-api@vger.kernel.org, marcel@holtmann.org,
linux-kernel@vger.kernel.org, keyrings@vger.kernel.org,
linux-crypto@vger.kernel.org, dwmw2@infradead.org,
davem@davemloft.net
Subject: Re: [PATCH v6 3/6] crypto: AF_ALG -- add asymmetric cipher interface
Date: Wed, 15 Jun 2016 09:04:31 +0200 [thread overview]
Message-ID: <5938642.dT2rHVWrVO@positron.chronox.de> (raw)
In-Reply-To: <alpine.OSX.2.20.1606140952080.13500@animeshb-mobl.amr.corp.intel.com>
Am Dienstag, 14. Juni 2016, 10:22:15 schrieb Mat Martineau:
Hi Mat,
> Stephan,
>
> On Sat, 14 May 2016, Tadeusz Struk wrote:
> > From: Stephan Mueller <smueller@chronox.de>
> >
> > This patch adds the user space interface for asymmetric ciphers. The
> > interface allows the use of sendmsg as well as vmsplice to provide data.
> >
> > This version has been rebased on top of 4.6 and a few chackpatch issues
> > have been fixed.
> >
> > Signed-off-by: Stephan Mueller <smueller@chronox.de>
> > Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
> > ---
> > crypto/algif_akcipher.c | 542
> > +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 542
> > insertions(+)
> > create mode 100644 crypto/algif_akcipher.c
> >
> > diff --git a/crypto/algif_akcipher.c b/crypto/algif_akcipher.c
> > new file mode 100644
> > index 0000000..6342b6e
> > --- /dev/null
> > +++ b/crypto/algif_akcipher.c
> > +
> > +static int akcipher_sendmsg(struct socket *sock, struct msghdr *msg,
> > + size_t size)
> > +{
> > + struct sock *sk = sock->sk;
> > + struct alg_sock *ask = alg_sk(sk);
> > + struct akcipher_ctx *ctx = ask->private;
> > + struct akcipher_sg_list *sgl = &ctx->tsgl;
> > + struct af_alg_control con = {};
> > + long copied = 0;
> > + int op = 0;
> > + bool init = 0;
> > + int err;
> > +
> > + if (msg->msg_controllen) {
> > + err = af_alg_cmsg_send(msg, &con);
> > + if (err)
> > + return err;
> > +
> > + init = 1;
> > + switch (con.op) {
> > + case ALG_OP_VERIFY:
> > + case ALG_OP_SIGN:
> > + case ALG_OP_ENCRYPT:
> > + case ALG_OP_DECRYPT:
> > + op = con.op;
> > + break;
> > + default:
> > + return -EINVAL;
> > + }
> > + }
> > +
> > + lock_sock(sk);
> > + if (!ctx->more && ctx->used)
> > + goto unlock;
>
> err might be uninitialised at this goto. Should it be set to something
> like -EALREADY to indicate that data is already queued for a different
> crypto op?
Thanks for the hint. Tadeusz, I will provide you with an updated
algif_akcipher.c for your patchset.
I will also have a look at the comment from Andrew.
>
> <snip>
>
> > +unlock:
> > + akcipher_data_wakeup(sk);
> > + release_sock(sk);
> > +
> > + return err ?: copied;
> > +}
>
> Regards,
>
> --
> Mat Martineau
> Intel OTC
Ciao
Stephan
next prev parent reply other threads:[~2016-06-15 7:04 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-05 19:50 [PATCH RESEND v5 0/6] crypto: algif - add akcipher Tadeusz Struk
2016-05-05 19:50 ` [PATCH RESEND v5 1/6] crypto: AF_ALG -- add sign/verify API Tadeusz Struk
2016-05-06 10:36 ` Stephan Mueller
2016-05-05 19:50 ` [PATCH RESEND v5 2/6] crypto: AF_ALG -- add setpubkey setsockopt call Tadeusz Struk
2016-05-05 19:51 ` [PATCH RESEND v5 3/6] crypto: AF_ALG -- add asymmetric cipher interface Tadeusz Struk
2016-05-05 19:51 ` [PATCH RESEND v5 4/6] crypto: algif_akcipher - enable compilation Tadeusz Struk
2016-05-05 19:51 ` [PATCH RESEND v5 5/6] crypto: algif_akcipher - add ops_nokey Tadeusz Struk
2016-05-05 19:51 ` [PATCH RESEND v5 6/6] crypto: AF_ALG - add support for key_id Tadeusz Struk
2016-05-06 11:46 ` Stephan Mueller
2016-05-13 23:32 ` Mat Martineau
2016-05-16 14:23 ` Tadeusz Struk
2016-05-11 14:25 ` [PATCH RESEND v5 0/6] crypto: algif - add akcipher David Howells
2016-05-15 4:16 ` [PATCH v6 " Tadeusz Struk
2016-05-15 4:16 ` [PATCH v6 1/6] crypto: AF_ALG -- add sign/verify API Tadeusz Struk
2016-05-15 4:16 ` [PATCH v6 2/6] crypto: AF_ALG -- add setpubkey setsockopt call Tadeusz Struk
2016-05-15 4:17 ` [PATCH v6 3/6] crypto: AF_ALG -- add asymmetric cipher interface Tadeusz Struk
2016-06-08 0:28 ` Mat Martineau
2016-06-08 5:31 ` Stephan Mueller
2016-06-08 19:14 ` Mat Martineau
2016-06-09 9:28 ` Stephan Mueller
2016-06-09 18:18 ` Mat Martineau
2016-06-09 18:24 ` Stephan Mueller
2016-06-09 18:27 ` Mat Martineau
2016-06-09 18:36 ` Stephan Mueller
2016-06-10 14:42 ` Tadeusz Struk
2016-06-22 22:45 ` Mat Martineau
2016-06-23 5:07 ` Stephan Mueller
2016-06-23 15:22 ` Denis Kenzior
2016-06-13 22:16 ` Andrew Zaborowski
2016-06-14 5:12 ` Stephan Mueller
2016-06-14 7:42 ` Andrew Zaborowski
2016-06-16 8:05 ` Stephan Mueller
2016-06-16 14:59 ` Andrew Zaborowski
2016-06-16 15:38 ` Stephan Mueller
2016-06-17 0:39 ` Andrew Zaborowski
2016-06-14 17:22 ` Mat Martineau
2016-06-15 7:04 ` Stephan Mueller [this message]
2016-05-15 4:17 ` [PATCH v6 4/6] crypto: algif_akcipher - enable compilation Tadeusz Struk
2016-05-15 4:17 ` [PATCH v6 5/6] crypto: algif_akcipher - add ops_nokey Tadeusz Struk
2016-05-15 4:17 ` [PATCH v6 6/6] crypto: AF_ALG - add support for key_id Tadeusz Struk
2016-05-26 0:45 ` Mat Martineau
2016-05-31 17:44 ` Tadeusz Struk
2016-05-15 11:59 ` [PATCH v6 0/6] crypto: algif - add akcipher Stephan Mueller
2016-05-16 20:46 ` Tadeusz Struk
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