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2ee97c190b
Realign struct crypto_engine to reduce its size by 8 bytes. Total size is now 192 bytes, allowing it to fit within 3 cachelines instead of 4. pahole output before: /* size: 200, cachelines: 4, members: 17 */ /* sum members: 183, holes: 3, sum holes: 17 */ /* paddings: 1, sum paddings: 4 */ /* last cacheline: 8 bytes */ and after: /* size: 192, cachelines: 3, members: 17 */ /* sum members: 183, holes: 2, sum holes: 9 */ /* paddings: 1, sum paddings: 4 */ No functional changes intended. Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Crypto engine API
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*
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* Copyright (c) 2016 Baolin Wang <baolin.wang@linaro.org>
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* Copyright (c) 2023 Herbert Xu <herbert@gondor.apana.org.au>
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*/
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#ifndef _CRYPTO_INTERNAL_ENGINE_H
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#define _CRYPTO_INTERNAL_ENGINE_H
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#include <crypto/algapi.h>
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#include <crypto/engine.h>
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#include <linux/kthread.h>
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#include <linux/spinlock_types.h>
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#include <linux/types.h>
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#define ENGINE_NAME_LEN 30
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struct device;
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/*
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* struct crypto_engine - crypto hardware engine
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* @name: the engine name
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* @idling: the engine is entering idle state
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* @busy: request pump is busy
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* @running: the engine is on working
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* @retry_support: indication that the hardware allows re-execution
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* of a failed backlog request
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* crypto-engine, in head position to keep order
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* @rt: whether this queue is set to run as a realtime task
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* @list: link with the global crypto engine list
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* @queue_lock: spinlock to synchronise access to request queue
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* @queue: the crypto queue of the engine
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* @prepare_crypt_hardware: a request will soon arrive from the queue
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* so the subsystem requests the driver to prepare the hardware
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* by issuing this call
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* @unprepare_crypt_hardware: there are currently no more requests on the
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* queue so the subsystem notifies the driver that it may relax the
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* hardware by issuing this call
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* @do_batch_requests: execute a batch of requests. Depends on multiple
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* requests support.
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* @kworker: kthread worker struct for request pump
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* @pump_requests: work struct for scheduling work to the request pump
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* @priv_data: the engine private data
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* @cur_req: the current request which is on processing
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*/
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struct crypto_engine {
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char name[ENGINE_NAME_LEN];
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bool idling;
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bool busy;
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bool running;
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bool retry_support;
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bool rt;
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struct list_head list;
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spinlock_t queue_lock;
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struct crypto_queue queue;
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struct device *dev;
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int (*prepare_crypt_hardware)(struct crypto_engine *engine);
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int (*unprepare_crypt_hardware)(struct crypto_engine *engine);
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int (*do_batch_requests)(struct crypto_engine *engine);
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struct kthread_worker *kworker;
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struct kthread_work pump_requests;
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void *priv_data;
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struct crypto_async_request *cur_req;
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};
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#endif
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