From patchwork Mon Dec 11 08:48:06 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antoine Tenart X-Patchwork-Id: 10104433 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 9946B602A7 for ; Mon, 11 Dec 2017 08:50:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A75CB294BE for ; Mon, 11 Dec 2017 08:50:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 988C3294D0; Mon, 11 Dec 2017 08:50:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9CC67294BE for ; Mon, 11 Dec 2017 08:50:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752066AbdLKIuD (ORCPT ); Mon, 11 Dec 2017 03:50:03 -0500 Received: from mail.free-electrons.com ([62.4.15.54]:53752 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750836AbdLKIuC (ORCPT ); Mon, 11 Dec 2017 03:50:02 -0500 Received: by mail.free-electrons.com (Postfix, from userid 110) id 43591203CE; Mon, 11 Dec 2017 09:50:01 +0100 (CET) Received: from localhost (LStLambert-657-1-97-87.w90-63.abo.wanadoo.fr [90.63.216.87]) by mail.free-electrons.com (Postfix) with ESMTPSA id 0B9EA20383; Mon, 11 Dec 2017 09:50:01 +0100 (CET) From: Antoine Tenart To: herbert@gondor.apana.org.au, davem@davemloft.net Cc: Ofer Heifetz , thomas.petazzoni@free-electrons.com, gregory.clement@free-electrons.com, miquel.raynal@free-electrons.com, igall@marvell.com, nadavh@marvell.com, linux-crypto@vger.kernel.org, Antoine Tenart Subject: [PATCH v3 1/3] crypto: inside-secure - per request invalidation Date: Mon, 11 Dec 2017 09:48:06 +0100 Message-Id: <20171211084808.8272-2-antoine.tenart@free-electrons.com> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20171211084808.8272-1-antoine.tenart@free-electrons.com> References: <20171211084808.8272-1-antoine.tenart@free-electrons.com> Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ofer Heifetz When an invalidation request is needed we currently override the context .send and .handle_result helpers. This is wrong as under high load other requests can already be queued and overriding the context helpers will make them execute the wrong .send and .handle_result functions. This commit fixes this by adding a needs_inv flag in the request to choose the action to perform when sending requests or handling their results. This flag will be set when needed (i.e. when the context flag will be set). Fixes: 1b44c5a60c13 ("crypto: inside-secure - add SafeXcel EIP197 crypto engine driver") Signed-off-by: Ofer Heifetz [Antoine: commit message, and removed non related changes from the original commit] Signed-off-by: Antoine Tenart --- drivers/crypto/inside-secure/safexcel_cipher.c | 71 +++++++++++++++++++++----- drivers/crypto/inside-secure/safexcel_hash.c | 68 +++++++++++++++++++----- 2 files changed, 112 insertions(+), 27 deletions(-) diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c index 5438552bc6d7..9ea24868d860 100644 --- a/drivers/crypto/inside-secure/safexcel_cipher.c +++ b/drivers/crypto/inside-secure/safexcel_cipher.c @@ -14,6 +14,7 @@ #include #include +#include #include "safexcel.h" @@ -33,6 +34,10 @@ struct safexcel_cipher_ctx { unsigned int key_len; }; +struct safexcel_cipher_req { + bool needs_inv; +}; + static void safexcel_cipher_token(struct safexcel_cipher_ctx *ctx, struct crypto_async_request *async, struct safexcel_command_desc *cdesc, @@ -126,9 +131,9 @@ static int safexcel_context_control(struct safexcel_cipher_ctx *ctx, return 0; } -static int safexcel_handle_result(struct safexcel_crypto_priv *priv, int ring, - struct crypto_async_request *async, - bool *should_complete, int *ret) +static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int ring, + struct crypto_async_request *async, + bool *should_complete, int *ret) { struct skcipher_request *req = skcipher_request_cast(async); struct safexcel_result_desc *rdesc; @@ -265,7 +270,6 @@ static int safexcel_aes_send(struct crypto_async_request *async, spin_unlock_bh(&priv->ring[ring].egress_lock); request->req = &req->base; - ctx->base.handle_result = safexcel_handle_result; *commands = n_cdesc; *results = n_rdesc; @@ -341,8 +345,6 @@ static int safexcel_handle_inv_result(struct safexcel_crypto_priv *priv, ring = safexcel_select_ring(priv); ctx->base.ring = ring; - ctx->base.needs_inv = false; - ctx->base.send = safexcel_aes_send; spin_lock_bh(&priv->ring[ring].queue_lock); enq_ret = crypto_enqueue_request(&priv->ring[ring].queue, async); @@ -359,6 +361,26 @@ static int safexcel_handle_inv_result(struct safexcel_crypto_priv *priv, return ndesc; } +static int safexcel_handle_result(struct safexcel_crypto_priv *priv, int ring, + struct crypto_async_request *async, + bool *should_complete, int *ret) +{ + struct skcipher_request *req = skcipher_request_cast(async); + struct safexcel_cipher_req *sreq = skcipher_request_ctx(req); + int err; + + if (sreq->needs_inv) { + sreq->needs_inv = false; + err = safexcel_handle_inv_result(priv, ring, async, + should_complete, ret); + } else { + err = safexcel_handle_req_result(priv, ring, async, + should_complete, ret); + } + + return err; +} + static int safexcel_cipher_send_inv(struct crypto_async_request *async, int ring, struct safexcel_request *request, int *commands, int *results) @@ -368,8 +390,6 @@ static int safexcel_cipher_send_inv(struct crypto_async_request *async, struct safexcel_crypto_priv *priv = ctx->priv; int ret; - ctx->base.handle_result = safexcel_handle_inv_result; - ret = safexcel_invalidate_cache(async, &ctx->base, priv, ctx->base.ctxr_dma, ring, request); if (unlikely(ret)) @@ -381,11 +401,29 @@ static int safexcel_cipher_send_inv(struct crypto_async_request *async, return 0; } +static int safexcel_send(struct crypto_async_request *async, + int ring, struct safexcel_request *request, + int *commands, int *results) +{ + struct skcipher_request *req = skcipher_request_cast(async); + struct safexcel_cipher_req *sreq = skcipher_request_ctx(req); + int ret; + + if (sreq->needs_inv) + ret = safexcel_cipher_send_inv(async, ring, request, + commands, results); + else + ret = safexcel_aes_send(async, ring, request, + commands, results); + return ret; +} + static int safexcel_cipher_exit_inv(struct crypto_tfm *tfm) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_crypto_priv *priv = ctx->priv; struct skcipher_request req; + struct safexcel_cipher_req *sreq = skcipher_request_ctx(&req); struct safexcel_inv_result result = {}; int ring = ctx->base.ring; @@ -399,7 +437,7 @@ static int safexcel_cipher_exit_inv(struct crypto_tfm *tfm) skcipher_request_set_tfm(&req, __crypto_skcipher_cast(tfm)); ctx = crypto_tfm_ctx(req.base.tfm); ctx->base.exit_inv = true; - ctx->base.send = safexcel_cipher_send_inv; + sreq->needs_inv = true; spin_lock_bh(&priv->ring[ring].queue_lock); crypto_enqueue_request(&priv->ring[ring].queue, &req.base); @@ -424,19 +462,21 @@ static int safexcel_aes(struct skcipher_request *req, enum safexcel_cipher_direction dir, u32 mode) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm); + struct safexcel_cipher_req *sreq = skcipher_request_ctx(req); struct safexcel_crypto_priv *priv = ctx->priv; int ret, ring; + sreq->needs_inv = false; ctx->direction = dir; ctx->mode = mode; if (ctx->base.ctxr) { - if (ctx->base.needs_inv) - ctx->base.send = safexcel_cipher_send_inv; + if (ctx->base.needs_inv) { + sreq->needs_inv = true; + ctx->base.needs_inv = false; + } } else { ctx->base.ring = safexcel_select_ring(priv); - ctx->base.send = safexcel_aes_send; - ctx->base.ctxr = dma_pool_zalloc(priv->context_pool, EIP197_GFP_FLAGS(req->base), &ctx->base.ctxr_dma); @@ -476,6 +516,11 @@ static int safexcel_skcipher_cra_init(struct crypto_tfm *tfm) alg.skcipher.base); ctx->priv = tmpl->priv; + ctx->base.send = safexcel_send; + ctx->base.handle_result = safexcel_handle_result; + + crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm), + sizeof(struct safexcel_cipher_req)); return 0; } diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c index 74feb6227101..6135c9f5742c 100644 --- a/drivers/crypto/inside-secure/safexcel_hash.c +++ b/drivers/crypto/inside-secure/safexcel_hash.c @@ -32,6 +32,7 @@ struct safexcel_ahash_req { bool last_req; bool finish; bool hmac; + bool needs_inv; u8 state_sz; /* expected sate size, only set once */ u32 state[SHA256_DIGEST_SIZE / sizeof(u32)]; @@ -119,9 +120,9 @@ static void safexcel_context_control(struct safexcel_ahash_ctx *ctx, } } -static int safexcel_handle_result(struct safexcel_crypto_priv *priv, int ring, - struct crypto_async_request *async, - bool *should_complete, int *ret) +static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int ring, + struct crypto_async_request *async, + bool *should_complete, int *ret) { struct safexcel_result_desc *rdesc; struct ahash_request *areq = ahash_request_cast(async); @@ -165,9 +166,9 @@ static int safexcel_handle_result(struct safexcel_crypto_priv *priv, int ring, return 1; } -static int safexcel_ahash_send(struct crypto_async_request *async, int ring, - struct safexcel_request *request, int *commands, - int *results) +static int safexcel_ahash_send_req(struct crypto_async_request *async, int ring, + struct safexcel_request *request, int *commands, + int *results) { struct ahash_request *areq = ahash_request_cast(async); struct crypto_ahash *ahash = crypto_ahash_reqtfm(areq); @@ -292,7 +293,6 @@ static int safexcel_ahash_send(struct crypto_async_request *async, int ring, req->processed += len; request->req = &areq->base; - ctx->base.handle_result = safexcel_handle_result; *commands = n_cdesc; *results = 1; @@ -374,8 +374,6 @@ static int safexcel_handle_inv_result(struct safexcel_crypto_priv *priv, ring = safexcel_select_ring(priv); ctx->base.ring = ring; - ctx->base.needs_inv = false; - ctx->base.send = safexcel_ahash_send; spin_lock_bh(&priv->ring[ring].queue_lock); enq_ret = crypto_enqueue_request(&priv->ring[ring].queue, async); @@ -392,6 +390,26 @@ static int safexcel_handle_inv_result(struct safexcel_crypto_priv *priv, return 1; } +static int safexcel_handle_result(struct safexcel_crypto_priv *priv, int ring, + struct crypto_async_request *async, + bool *should_complete, int *ret) +{ + struct ahash_request *areq = ahash_request_cast(async); + struct safexcel_ahash_req *req = ahash_request_ctx(areq); + int err; + + if (req->needs_inv) { + req->needs_inv = false; + err = safexcel_handle_inv_result(priv, ring, async, + should_complete, ret); + } else { + err = safexcel_handle_req_result(priv, ring, async, + should_complete, ret); + } + + return err; +} + static int safexcel_ahash_send_inv(struct crypto_async_request *async, int ring, struct safexcel_request *request, int *commands, int *results) @@ -400,7 +418,6 @@ static int safexcel_ahash_send_inv(struct crypto_async_request *async, struct safexcel_ahash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(areq)); int ret; - ctx->base.handle_result = safexcel_handle_inv_result; ret = safexcel_invalidate_cache(async, &ctx->base, ctx->priv, ctx->base.ctxr_dma, ring, request); if (unlikely(ret)) @@ -412,11 +429,30 @@ static int safexcel_ahash_send_inv(struct crypto_async_request *async, return 0; } +static int safexcel_ahash_send(struct crypto_async_request *async, + int ring, struct safexcel_request *request, + int *commands, int *results) +{ + + struct ahash_request *areq = ahash_request_cast(async); + struct safexcel_ahash_req *req = ahash_request_ctx(areq); + int ret; + + if (req->needs_inv) + ret = safexcel_ahash_send_inv(async, ring, request, + commands, results); + else + ret = safexcel_ahash_send_req(async, ring, request, + commands, results); + return ret; +} + static int safexcel_ahash_exit_inv(struct crypto_tfm *tfm) { struct safexcel_ahash_ctx *ctx = crypto_tfm_ctx(tfm); struct safexcel_crypto_priv *priv = ctx->priv; struct ahash_request req; + struct safexcel_ahash_req *rctx = ahash_request_ctx(&req); struct safexcel_inv_result result = {}; int ring = ctx->base.ring; @@ -430,7 +466,7 @@ static int safexcel_ahash_exit_inv(struct crypto_tfm *tfm) ahash_request_set_tfm(&req, __crypto_ahash_cast(tfm)); ctx = crypto_tfm_ctx(req.base.tfm); ctx->base.exit_inv = true; - ctx->base.send = safexcel_ahash_send_inv; + rctx->needs_inv = true; spin_lock_bh(&priv->ring[ring].queue_lock); crypto_enqueue_request(&priv->ring[ring].queue, &req.base); @@ -481,14 +517,16 @@ static int safexcel_ahash_enqueue(struct ahash_request *areq) struct safexcel_crypto_priv *priv = ctx->priv; int ret, ring; - ctx->base.send = safexcel_ahash_send; + req->needs_inv = false; if (req->processed && ctx->digest == CONTEXT_CONTROL_DIGEST_PRECOMPUTED) ctx->base.needs_inv = safexcel_ahash_needs_inv_get(areq); if (ctx->base.ctxr) { - if (ctx->base.needs_inv) - ctx->base.send = safexcel_ahash_send_inv; + if (ctx->base.needs_inv) { + ctx->base.needs_inv = false; + req->needs_inv = true; + } } else { ctx->base.ring = safexcel_select_ring(priv); ctx->base.ctxr = dma_pool_zalloc(priv->context_pool, @@ -622,6 +660,8 @@ static int safexcel_ahash_cra_init(struct crypto_tfm *tfm) struct safexcel_alg_template, alg.ahash); ctx->priv = tmpl->priv; + ctx->base.send = safexcel_ahash_send; + ctx->base.handle_result = safexcel_handle_result; crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), sizeof(struct safexcel_ahash_req));