kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 136 deletions

diff --git a/target/linux/generic/backport-5.4/080-wireguard-0027-crypto-curve25519-implement-generic-KPP-driver.patch b/target/linux/generic/backport-5.4/080-wireguard-0027-crypto-curve25519-implement-generic-KPP-driver.patch
deleted file mode 100644
index d909561690..0000000000
--- a/target/linux/generic/backport-5.4/080-wireguard-0027-crypto-curve25519-implement-generic-KPP-driver.patch
+++ /dev/null
@@ -1,136 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Ard Biesheuvel <ardb@kernel.org>
-Date: Fri, 8 Nov 2019 13:22:34 +0100
-Subject: [PATCH] crypto: curve25519 - implement generic KPP driver
-
-commit ee772cb641135739c1530647391d5a04c39db192 upstream.
-
-Expose the generic Curve25519 library via the crypto API KPP interface.
-
-Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
-Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
----
- crypto/Kconfig              |  5 +++
- crypto/Makefile             |  1 +
- crypto/curve25519-generic.c | 90 +++++++++++++++++++++++++++++++++++++
- 3 files changed, 96 insertions(+)
- create mode 100644 crypto/curve25519-generic.c
-
---- a/crypto/Kconfig
-+++ b/crypto/Kconfig
-@@ -264,6 +264,11 @@ config CRYPTO_ECRDSA
- 	  standard algorithms (called GOST algorithms). Only signature verification
- 	  is implemented.
- 
-+config CRYPTO_CURVE25519
-+	tristate "Curve25519 algorithm"
-+	select CRYPTO_KPP
-+	select CRYPTO_LIB_CURVE25519_GENERIC
-+
- comment "Authenticated Encryption with Associated Data"
- 
- config CRYPTO_CCM
---- a/crypto/Makefile
-+++ b/crypto/Makefile
-@@ -167,6 +167,7 @@ obj-$(CONFIG_CRYPTO_ZSTD) += zstd.o
- obj-$(CONFIG_CRYPTO_OFB) += ofb.o
- obj-$(CONFIG_CRYPTO_ECC) += ecc.o
- obj-$(CONFIG_CRYPTO_ESSIV) += essiv.o
-+obj-$(CONFIG_CRYPTO_CURVE25519) += curve25519-generic.o
- 
- ecdh_generic-y += ecdh.o
- ecdh_generic-y += ecdh_helper.o
---- /dev/null
-+++ b/crypto/curve25519-generic.c
-@@ -0,0 +1,90 @@
-+// SPDX-License-Identifier: GPL-2.0-or-later
-+
-+#include <crypto/curve25519.h>
-+#include <crypto/internal/kpp.h>
-+#include <crypto/kpp.h>
-+#include <linux/module.h>
-+#include <linux/scatterlist.h>
-+
-+static int curve25519_set_secret(struct crypto_kpp *tfm, const void *buf,
-+				 unsigned int len)
-+{
-+	u8 *secret = kpp_tfm_ctx(tfm);
-+
-+	if (!len)
-+		curve25519_generate_secret(secret);
-+	else if (len == CURVE25519_KEY_SIZE &&
-+		 crypto_memneq(buf, curve25519_null_point, CURVE25519_KEY_SIZE))
-+		memcpy(secret, buf, CURVE25519_KEY_SIZE);
-+	else
-+		return -EINVAL;
-+	return 0;
-+}
-+
-+static int curve25519_compute_value(struct kpp_request *req)
-+{
-+	struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
-+	const u8 *secret = kpp_tfm_ctx(tfm);
-+	u8 public_key[CURVE25519_KEY_SIZE];
-+	u8 buf[CURVE25519_KEY_SIZE];
-+	int copied, nbytes;
-+	u8 const *bp;
-+
-+	if (req->src) {
-+		copied = sg_copy_to_buffer(req->src,
-+					   sg_nents_for_len(req->src,
-+							    CURVE25519_KEY_SIZE),
-+					   public_key, CURVE25519_KEY_SIZE);
-+		if (copied != CURVE25519_KEY_SIZE)
-+			return -EINVAL;
-+		bp = public_key;
-+	} else {
-+		bp = curve25519_base_point;
-+	}
-+
-+	curve25519_generic(buf, secret, bp);
-+
-+	/* might want less than we've got */
-+	nbytes = min_t(size_t, CURVE25519_KEY_SIZE, req->dst_len);
-+	copied = sg_copy_from_buffer(req->dst, sg_nents_for_len(req->dst,
-+								nbytes),
-+				     buf, nbytes);
-+	if (copied != nbytes)
-+		return -EINVAL;
-+	return 0;
-+}
-+
-+static unsigned int curve25519_max_size(struct crypto_kpp *tfm)
-+{
-+	return CURVE25519_KEY_SIZE;
-+}
-+
-+static struct kpp_alg curve25519_alg = {
-+	.base.cra_name		= "curve25519",
-+	.base.cra_driver_name	= "curve25519-generic",
-+	.base.cra_priority	= 100,
-+	.base.cra_module	= THIS_MODULE,
-+	.base.cra_ctxsize	= CURVE25519_KEY_SIZE,
-+
-+	.set_secret		= curve25519_set_secret,
-+	.generate_public_key	= curve25519_compute_value,
-+	.compute_shared_secret	= curve25519_compute_value,
-+	.max_size		= curve25519_max_size,
-+};
-+
-+static int curve25519_init(void)
-+{
-+	return crypto_register_kpp(&curve25519_alg);
-+}
-+
-+static void curve25519_exit(void)
-+{
-+	crypto_unregister_kpp(&curve25519_alg);
-+}
-+
-+subsys_initcall(curve25519_init);
-+module_exit(curve25519_exit);
-+
-+MODULE_ALIAS_CRYPTO("curve25519");
-+MODULE_ALIAS_CRYPTO("curve25519-generic");
-+MODULE_LICENSE("GPL");