1 files changed, 68 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0034-crypto-chacha_generic-remove-unnecessary-setkey-func.patch b/target/linux/generic/backport-5.4/080-wireguard-0034-crypto-chacha_generic-remove-unnecessary-setkey-func.patch
new file mode 100644
index 0000000000..709b1fbcf5
--- /dev/null
+++ b/target/linux/generic/backport-5.4/080-wireguard-0034-crypto-chacha_generic-remove-unnecessary-setkey-func.patch
@@ -0,0 +1,68 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Eric Biggers <ebiggers@google.com>
+Date: Sun, 17 Nov 2019 23:21:29 -0800
+Subject: [PATCH] crypto: chacha_generic - remove unnecessary setkey()
+ functions
+
+commit 2043323a799a660bc84bbee404cf7a2617ec6157 upstream.
+
+Use chacha20_setkey() and chacha12_setkey() from
+<crypto/internal/chacha.h> instead of defining them again in
+chacha_generic.c.
+
+Signed-off-by: Eric Biggers <ebiggers@google.com>
+Acked-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/chacha_generic.c | 18 +++---------------
+ 1 file changed, 3 insertions(+), 15 deletions(-)
+
+--- a/crypto/chacha_generic.c
++++ b/crypto/chacha_generic.c
+@@ -37,18 +37,6 @@ static int chacha_stream_xor(struct skci
+ 	return err;
+ }
+ 
+-static int crypto_chacha20_setkey(struct crypto_skcipher *tfm, const u8 *key,
+-				  unsigned int keysize)
+-{
+-	return chacha_setkey(tfm, key, keysize, 20);
+-}
+-
+-static int crypto_chacha12_setkey(struct crypto_skcipher *tfm, const u8 *key,
+-				 unsigned int keysize)
+-{
+-	return chacha_setkey(tfm, key, keysize, 12);
+-}
+-
+ static int crypto_chacha_crypt(struct skcipher_request *req)
+ {
+ 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+@@ -91,7 +79,7 @@ static struct skcipher_alg algs[] = {
+ 		.max_keysize		= CHACHA_KEY_SIZE,
+ 		.ivsize			= CHACHA_IV_SIZE,
+ 		.chunksize		= CHACHA_BLOCK_SIZE,
+-		.setkey			= crypto_chacha20_setkey,
++		.setkey			= chacha20_setkey,
+ 		.encrypt		= crypto_chacha_crypt,
+ 		.decrypt		= crypto_chacha_crypt,
+ 	}, {
+@@ -106,7 +94,7 @@ static struct skcipher_alg algs[] = {
+ 		.max_keysize		= CHACHA_KEY_SIZE,
+ 		.ivsize			= XCHACHA_IV_SIZE,
+ 		.chunksize		= CHACHA_BLOCK_SIZE,
+-		.setkey			= crypto_chacha20_setkey,
++		.setkey			= chacha20_setkey,
+ 		.encrypt		= crypto_xchacha_crypt,
+ 		.decrypt		= crypto_xchacha_crypt,
+ 	}, {
+@@ -121,7 +109,7 @@ static struct skcipher_alg algs[] = {
+ 		.max_keysize		= CHACHA_KEY_SIZE,
+ 		.ivsize			= XCHACHA_IV_SIZE,
+ 		.chunksize		= CHACHA_BLOCK_SIZE,
+-		.setkey			= crypto_chacha12_setkey,
++		.setkey			= chacha12_setkey,
+ 		.encrypt		= crypto_xchacha_crypt,
+ 		.decrypt		= crypto_xchacha_crypt,
+ 	}