v4.19.13 snapshot.
diff --git a/crypto/acompress.c b/crypto/acompress.c
new file mode 100644
index 0000000..1544b7c
--- /dev/null
+++ b/crypto/acompress.c
@@ -0,0 +1,199 @@
+/*
+ * Asynchronous Compression operations
+ *
+ * Copyright (c) 2016, Intel Corporation
+ * Authors: Weigang Li <weigang.li@intel.com>
+ * Giovanni Cabiddu <giovanni.cabiddu@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/seq_file.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/crypto.h>
+#include <crypto/algapi.h>
+#include <linux/cryptouser.h>
+#include <linux/compiler.h>
+#include <net/netlink.h>
+#include <crypto/internal/acompress.h>
+#include <crypto/internal/scompress.h>
+#include "internal.h"
+
+static const struct crypto_type crypto_acomp_type;
+
+#ifdef CONFIG_NET
+static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ struct crypto_report_acomp racomp;
+
+ strncpy(racomp.type, "acomp", sizeof(racomp.type));
+
+ if (nla_put(skb, CRYPTOCFGA_REPORT_ACOMP,
+ sizeof(struct crypto_report_acomp), &racomp))
+ goto nla_put_failure;
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+#else
+static int crypto_acomp_report(struct sk_buff *skb, struct crypto_alg *alg)
+{
+ return -ENOSYS;
+}
+#endif
+
+static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
+ __maybe_unused;
+
+static void crypto_acomp_show(struct seq_file *m, struct crypto_alg *alg)
+{
+ seq_puts(m, "type : acomp\n");
+}
+
+static void crypto_acomp_exit_tfm(struct crypto_tfm *tfm)
+{
+ struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
+ struct acomp_alg *alg = crypto_acomp_alg(acomp);
+
+ alg->exit(acomp);
+}
+
+static int crypto_acomp_init_tfm(struct crypto_tfm *tfm)
+{
+ struct crypto_acomp *acomp = __crypto_acomp_tfm(tfm);
+ struct acomp_alg *alg = crypto_acomp_alg(acomp);
+
+ if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
+ return crypto_init_scomp_ops_async(tfm);
+
+ acomp->compress = alg->compress;
+ acomp->decompress = alg->decompress;
+ acomp->dst_free = alg->dst_free;
+ acomp->reqsize = alg->reqsize;
+
+ if (alg->exit)
+ acomp->base.exit = crypto_acomp_exit_tfm;
+
+ if (alg->init)
+ return alg->init(acomp);
+
+ return 0;
+}
+
+static unsigned int crypto_acomp_extsize(struct crypto_alg *alg)
+{
+ int extsize = crypto_alg_extsize(alg);
+
+ if (alg->cra_type != &crypto_acomp_type)
+ extsize += sizeof(struct crypto_scomp *);
+
+ return extsize;
+}
+
+static const struct crypto_type crypto_acomp_type = {
+ .extsize = crypto_acomp_extsize,
+ .init_tfm = crypto_acomp_init_tfm,
+#ifdef CONFIG_PROC_FS
+ .show = crypto_acomp_show,
+#endif
+ .report = crypto_acomp_report,
+ .maskclear = ~CRYPTO_ALG_TYPE_MASK,
+ .maskset = CRYPTO_ALG_TYPE_ACOMPRESS_MASK,
+ .type = CRYPTO_ALG_TYPE_ACOMPRESS,
+ .tfmsize = offsetof(struct crypto_acomp, base),
+};
+
+struct crypto_acomp *crypto_alloc_acomp(const char *alg_name, u32 type,
+ u32 mask)
+{
+ return crypto_alloc_tfm(alg_name, &crypto_acomp_type, type, mask);
+}
+EXPORT_SYMBOL_GPL(crypto_alloc_acomp);
+
+struct acomp_req *acomp_request_alloc(struct crypto_acomp *acomp)
+{
+ struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
+ struct acomp_req *req;
+
+ req = __acomp_request_alloc(acomp);
+ if (req && (tfm->__crt_alg->cra_type != &crypto_acomp_type))
+ return crypto_acomp_scomp_alloc_ctx(req);
+
+ return req;
+}
+EXPORT_SYMBOL_GPL(acomp_request_alloc);
+
+void acomp_request_free(struct acomp_req *req)
+{
+ struct crypto_acomp *acomp = crypto_acomp_reqtfm(req);
+ struct crypto_tfm *tfm = crypto_acomp_tfm(acomp);
+
+ if (tfm->__crt_alg->cra_type != &crypto_acomp_type)
+ crypto_acomp_scomp_free_ctx(req);
+
+ if (req->flags & CRYPTO_ACOMP_ALLOC_OUTPUT) {
+ acomp->dst_free(req->dst);
+ req->dst = NULL;
+ }
+
+ __acomp_request_free(req);
+}
+EXPORT_SYMBOL_GPL(acomp_request_free);
+
+int crypto_register_acomp(struct acomp_alg *alg)
+{
+ struct crypto_alg *base = &alg->base;
+
+ base->cra_type = &crypto_acomp_type;
+ base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
+ base->cra_flags |= CRYPTO_ALG_TYPE_ACOMPRESS;
+
+ return crypto_register_alg(base);
+}
+EXPORT_SYMBOL_GPL(crypto_register_acomp);
+
+int crypto_unregister_acomp(struct acomp_alg *alg)
+{
+ return crypto_unregister_alg(&alg->base);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_acomp);
+
+int crypto_register_acomps(struct acomp_alg *algs, int count)
+{
+ int i, ret;
+
+ for (i = 0; i < count; i++) {
+ ret = crypto_register_acomp(&algs[i]);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ for (--i; i >= 0; --i)
+ crypto_unregister_acomp(&algs[i]);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_register_acomps);
+
+void crypto_unregister_acomps(struct acomp_alg *algs, int count)
+{
+ int i;
+
+ for (i = count - 1; i >= 0; --i)
+ crypto_unregister_acomp(&algs[i]);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_acomps);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Asynchronous compression type");