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[90.63.244.31]) by smtp.googlemail.com with ESMTPSA id r4-20020a05600c35c400b00389f368cf1esm3695424wmq.40.2022.03.17.13.56.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Mar 2022 13:56:23 -0700 (PDT) From: Corentin Labbe To: herbert@gondor.apana.org.au, jernej.skrabec@gmail.com, samuel@sholland.org, wens@csie.org Cc: linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev, Corentin Labbe Subject: [PATCH 18/19] crypto: sun8i-ce: rework debugging Date: Thu, 17 Mar 2022 20:56:04 +0000 Message-Id: <20220317205605.3924836-19-clabbe@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220317205605.3924836-1-clabbe@baylibre.com> References: <20220317205605.3924836-1-clabbe@baylibre.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org The "Fallback for xxx" message is annoying, remove it and store the information in the debugfs. Let's add more precise fallback stats and display it better. Signed-off-by: Corentin Labbe --- .../allwinner/sun8i-ce/sun8i-ce-cipher.c | 43 +++++++++++++++---- .../crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 34 +++++++++++++-- .../crypto/allwinner/sun8i-ce/sun8i-ce-hash.c | 27 +++++++++--- drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 11 ++++- 4 files changed, 96 insertions(+), 19 deletions(-) diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c index 35ab71d3a82d..315a62e424d6 100644 --- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c @@ -25,27 +25,54 @@ static int sun8i_ce_cipher_need_fallback(struct skcipher_request *areq) { struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq); struct scatterlist *sg; + struct skcipher_alg *alg = crypto_skcipher_alg(tfm); + struct sun8i_ce_alg_template *algt; + + algt = container_of(alg, struct sun8i_ce_alg_template, alg.skcipher); if (sg_nents_for_len(areq->src, areq->cryptlen) > MAX_SG || - sg_nents_for_len(areq->dst, areq->cryptlen) > MAX_SG) + sg_nents_for_len(areq->dst, areq->cryptlen) > MAX_SG) { + algt->stat_fb_maxsg++; return true; + } + + if (areq->cryptlen < crypto_skcipher_ivsize(tfm)) { + algt->stat_fb_leniv++; + return true; + } - if (areq->cryptlen < crypto_skcipher_ivsize(tfm)) + if (areq->cryptlen == 0) { + algt->stat_fb_len0++; return true; + } - if (areq->cryptlen == 0 || areq->cryptlen % 16) + if (areq->cryptlen % 16) { + algt->stat_fb_mod16++; return true; + } sg = areq->src; while (sg) { - if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32))) + if (!IS_ALIGNED(sg->offset, sizeof(u32))) { + algt->stat_fb_srcali++; + return true; + } + if (sg->length % 4) { + algt->stat_fb_srclen++; return true; + } sg = sg_next(sg); } sg = areq->dst; while (sg) { - if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32))) + if (!IS_ALIGNED(sg->offset, sizeof(u32))) { + algt->stat_fb_dstali++; + return true; + } + if (sg->length % 4) { + algt->stat_fb_dstlen++; return true; + } sg = sg_next(sg); } return false; @@ -384,9 +411,9 @@ int sun8i_ce_cipher_init(struct crypto_tfm *tfm) sktfm->reqsize = sizeof(struct sun8i_cipher_req_ctx) + crypto_skcipher_reqsize(op->fallback_tfm); - dev_info(op->ce->dev, "Fallback for %s is %s\n", - crypto_tfm_alg_driver_name(&sktfm->base), - crypto_tfm_alg_driver_name(crypto_skcipher_tfm(op->fallback_tfm))); + memcpy(algt->fbname, + crypto_tfm_alg_driver_name(crypto_skcipher_tfm(op->fallback_tfm)), + CRYPTO_MAX_ALG_NAME); op->enginectx.op.do_one_request = sun8i_ce_cipher_run; op->enginectx.op.prepare_request = sun8i_ce_cipher_prepare; diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c index 8f902607af68..7f608e1e6bde 100644 --- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c @@ -644,19 +644,47 @@ static int sun8i_ce_debugfs_show(struct seq_file *seq, void *v) continue; switch (ce_algs[i].type) { case CRYPTO_ALG_TYPE_SKCIPHER: - seq_printf(seq, "%s %s %lu %lu\n", + seq_printf(seq, "%s %s reqs=%lu fallback=%lu\n", ce_algs[i].alg.skcipher.base.cra_driver_name, ce_algs[i].alg.skcipher.base.cra_name, ce_algs[i].stat_req, ce_algs[i].stat_fb); + seq_printf(seq, "\tLast fallback is: %s\n", + ce_algs[i].fbname); + seq_printf(seq, "\tFallback due to 0 length: %lu\n", + ce_algs[i].stat_fb_len0); + seq_printf(seq, "\tFallback due to length !mod16: %lu\n", + ce_algs[i].stat_fb_mod16); + seq_printf(seq, "\tFallback due to length < IV: %lu\n", + ce_algs[i].stat_fb_leniv); + seq_printf(seq, "\tFallback due to source alignment: %lu\n", + ce_algs[i].stat_fb_srcali); + seq_printf(seq, "\tFallback due to dest alignment: %lu\n", + ce_algs[i].stat_fb_dstali); + seq_printf(seq, "\tFallback due to source length: %lu\n", + ce_algs[i].stat_fb_srclen); + seq_printf(seq, "\tFallback due to dest length: %lu\n", + ce_algs[i].stat_fb_dstlen); + seq_printf(seq, "\tFallback due to SG numbers: %lu\n", + ce_algs[i].stat_fb_maxsg); break; case CRYPTO_ALG_TYPE_AHASH: - seq_printf(seq, "%s %s %lu %lu\n", + seq_printf(seq, "%s %s reqs=%lu fallback=%lu\n", ce_algs[i].alg.hash.halg.base.cra_driver_name, ce_algs[i].alg.hash.halg.base.cra_name, ce_algs[i].stat_req, ce_algs[i].stat_fb); + seq_printf(seq, "\tLast fallback is: %s\n", + ce_algs[i].fbname); + seq_printf(seq, "\tFallback due to 0 length: %lu\n", + ce_algs[i].stat_fb_len0); + seq_printf(seq, "\tFallback due to length: %lu\n", + ce_algs[i].stat_fb_srclen); + seq_printf(seq, "\tFallback due to alignment: %lu\n", + ce_algs[i].stat_fb_srcali); + seq_printf(seq, "\tFallback due to SG numbers: %lu\n", + ce_algs[i].stat_fb_maxsg); break; case CRYPTO_ALG_TYPE_RNG: - seq_printf(seq, "%s %s %lu %lu\n", + seq_printf(seq, "%s %s reqs=%lu bytes=%lu\n", ce_algs[i].alg.rng.base.cra_driver_name, ce_algs[i].alg.rng.base.cra_name, ce_algs[i].stat_req, ce_algs[i].stat_bytes); diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c index 17f6885dbe35..0568fffc4dd3 100644 --- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c @@ -50,9 +50,9 @@ int sun8i_ce_hash_crainit(struct crypto_tfm *tfm) sizeof(struct sun8i_ce_hash_reqctx) + crypto_ahash_reqsize(op->fallback_tfm)); - dev_info(op->ce->dev, "Fallback for %s is %s\n", - crypto_tfm_alg_driver_name(tfm), - crypto_tfm_alg_driver_name(&op->fallback_tfm->base)); + memcpy(algt->fbname, crypto_tfm_alg_driver_name(&op->fallback_tfm->base), + CRYPTO_MAX_ALG_NAME); + err = pm_runtime_get_sync(op->ce->dev); if (err < 0) goto error_pm; @@ -199,17 +199,32 @@ static int sun8i_ce_hash_digest_fb(struct ahash_request *areq) static bool sun8i_ce_hash_need_fallback(struct ahash_request *areq) { + struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); + struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg); + struct sun8i_ce_alg_template *algt; struct scatterlist *sg; - if (areq->nbytes == 0) + algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash); + + if (areq->nbytes == 0) { + algt->stat_fb_len0++; return true; + } /* we need to reserve one SG for padding one */ - if (sg_nents_for_len(areq->src, areq->nbytes) > MAX_SG - 1) + if (sg_nents_for_len(areq->src, areq->nbytes) > MAX_SG - 1) { + algt->stat_fb_maxsg++; return true; + } sg = areq->src; while (sg) { - if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32))) + if (sg->length % 4) { + algt->stat_fb_srclen++; return true; + } + if (!IS_ALIGNED(sg->offset, sizeof(u32))) { + algt->stat_fb_srcali++; + return true; + } sg = sg_next(sg); } return false; diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h index 229b696d5a2c..30a6405b2051 100644 --- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h +++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h @@ -393,11 +393,18 @@ struct sun8i_ce_alg_template { struct rng_alg rng; struct akcipher_alg rsa; } alg; -#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG unsigned long stat_req; unsigned long stat_fb; unsigned long stat_bytes; -#endif + unsigned long stat_fb_maxsg; + unsigned long stat_fb_leniv; + unsigned long stat_fb_len0; + unsigned long stat_fb_mod16; + unsigned long stat_fb_srcali; + unsigned long stat_fb_srclen; + unsigned long stat_fb_dstali; + unsigned long stat_fb_dstlen; + char fbname[CRYPTO_MAX_ALG_NAME]; }; int sun8i_ce_enqueue(struct crypto_async_request *areq, u32 type);