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For a Linux server with NUMA, there are possibly multiple (de)compressors which are either local or remote to some NUMA node. Some drivers will automatically use the (de)compressor near the CPU calling acomp_alloc(). However, it is not necessarily correct because users who send acomp_req could be from different NUMA node with the CPU which allocates acomp. Just like kernel has kmalloc() and kmalloc_node(), here crypto can have same support. Cc: Seth Jennings <sjenning@redhat.com> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Vitaly Wool <vitaly.wool@konsulko.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Barry Song <song.bao.hua@hisilicon.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
199 lines
4.7 KiB
C
199 lines
4.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Asynchronous Compression operations
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*
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* Copyright (c) 2016, Intel Corporation
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* Authors: Weigang Li <weigang.li@intel.com>
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* Giovanni Cabiddu <giovanni.cabiddu@intel.com>
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*/
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/seq_file.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/crypto.h>
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#include <crypto/algapi.h>
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#include <linux/cryptouser.h>
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#include <linux/compiler.h>
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#include <net/netlink.h>
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#include <crypto/internal/acompress.h>
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#include <crypto/internal/scompress.h>
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#include "internal.h"
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static const struct crypto_type crypto_acomp_type;
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#ifdef CONFIG_NET
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static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
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{
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struct crypto_report_acomp racomp;
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memset(&racomp, 0, sizeof(racomp));
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strscpy(racomp.type, "acomp", sizeof(racomp.type));
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return nla_put(skb, CRYPTOCFGA_REPORT_ACOMP, sizeof(racomp), &racomp);
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}
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#else
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static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
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{
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return -ENOSYS;
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}
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#endif
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static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
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__maybe_unused;
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static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
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{
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seq_puts(m, "type : acomp\n");
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}
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static void crypto_acomp_exit_tfm(struct crypto_tfm *tfm)
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{
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struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
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struct acomp_alg *alg = crypto_acomp_alg(acomp);
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alg->exit(acomp);
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}
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static int crypto_acomp_init_tfm(struct crypto_tfm *tfm)
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{
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struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
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struct acomp_alg *alg = crypto_acomp_alg(acomp);
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if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
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return crypto_init_scomp_ops_async(tfm);
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acomp->compress = alg->compress;
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acomp->decompress = alg->decompress;
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acomp->dst_free = alg->dst_free;
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acomp->reqsize = alg->reqsize;
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if (alg->exit)
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acomp->base.exit = crypto_acomp_exit_tfm;
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if (alg->init)
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return alg->init(acomp);
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return 0;
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}
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static unsigned int crypto_acomp_extsize(struct crypto_alg *alg)
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{
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int extsize = crypto_alg_extsize(alg);
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if (alg->cra_type != &crypto_acomp_type)
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extsize += sizeof(struct crypto_scomp *);
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return extsize;
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}
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static const struct crypto_type crypto_acomp_type = {
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.extsize = crypto_acomp_extsize,
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.init_tfm = crypto_acomp_init_tfm,
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#ifdef CONFIG_PROC_FS
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.show = crypto_acomp_show,
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#endif
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.report = crypto_acomp_report,
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.maskclear = ~CRYPTO_ALG_TYPE_MASK,
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.maskset = CRYPTO_ALG_TYPE_ACOMPRESS_MASK,
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.type = CRYPTO_ALG_TYPE_ACOMPRESS,
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.tfmsize = offsetof(struct crypto_acomp, base),
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};
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struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
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u32 mask)
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{
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return crypto_alloc_tfm(alg_name, &crypto_acomp_type, type, mask);
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}
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EXPORT_SYMBOL_GPL(crypto_alloc_acomp);
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struct crypto_acomp *crypto_alloc_acomp_node(const char *alg_name, u32 type,
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u32 mask, int node)
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{
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return crypto_alloc_tfm_node(alg_name, &crypto_acomp_type, type, mask,
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node);
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}
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EXPORT_SYMBOL_GPL(crypto_alloc_acomp_node);
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struct acomp_req *acomp_request_alloc(struct crypto_acomp *acomp)
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{
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struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
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struct acomp_req *req;
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req = __acomp_request_alloc(acomp);
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if (req && (tfm->__crt_alg->cra_type != &crypto_acomp_type))
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return crypto_acomp_scomp_alloc_ctx(req);
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return req;
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}
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EXPORT_SYMBOL_GPL(acomp_request_alloc);
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void acomp_request_free(struct acomp_req *req)
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{
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struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);
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struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
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if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
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crypto_acomp_scomp_free_ctx(req);
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if (req->flags & CRYPTO_ACOMP_ALLOC_OUTPUT) {
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acomp->dst_free(req->dst);
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req->dst = NULL;
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}
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__acomp_request_free(req);
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}
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EXPORT_SYMBOL_GPL(acomp_request_free);
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int crypto_register_acomp(struct acomp_alg *alg)
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{
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struct crypto_alg *base = &alg->base;
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base->cra_type = &crypto_acomp_type;
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base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
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base->cra_flags |= CRYPTO_ALG_TYPE_ACOMPRESS;
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return crypto_register_alg(base);
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}
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EXPORT_SYMBOL_GPL(crypto_register_acomp);
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void crypto_unregister_acomp(struct acomp_alg *alg)
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{
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crypto_unregister_alg(&alg->base);
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}
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EXPORT_SYMBOL_GPL(crypto_unregister_acomp);
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int crypto_register_acomps(struct acomp_alg *algs, int count)
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{
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int i, ret;
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for (i = 0; i < count; i++) {
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ret = crypto_register_acomp(&algs[i]);
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if (ret)
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goto err;
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}
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return 0;
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err:
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for (--i; i >= 0; --i)
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crypto_unregister_acomp(&algs[i]);
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return ret;
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}
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EXPORT_SYMBOL_GPL(crypto_register_acomps);
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void crypto_unregister_acomps(struct acomp_alg *algs, int count)
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{
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int i;
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for (i = count - 1; i >= 0; --i)
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crypto_unregister_acomp(&algs[i]);
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}
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EXPORT_SYMBOL_GPL(crypto_unregister_acomps);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Asynchronous compression type");
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