From ebb79f1644550c41d07893e00c59ac402f72fe79 Mon Sep 17 00:00:00 2001
From: David Sterba <dsterba@suse.com>
Date: Mon, 10 Jun 2019 14:56:11 +0200
Subject: [PATCH] btrfs-progs: add crc32c to hash wrappers

Unify the interface for crc32c too.

Signed-off-by: David Sterba <dsterba@suse.com>
---
 crypto/hash.c | 11 +++++++++++
 crypto/hash.h |  1 +
 2 files changed, 12 insertions(+)

diff --git a/crypto/hash.c b/crypto/hash.c
index 8c428cba..dbabfadf 100644
--- a/crypto/hash.c
+++ b/crypto/hash.c
@@ -1,6 +1,17 @@
 #include "crypto/hash.h"
+#include "crypto/crc32c.h"
 #include "crypto/xxhash.h"
 
+int hash_crc32c(const u8* buf, size_t length, u8 *out)
+{
+	u32 crc = ~0;
+
+	crc = crc32c(~0, buf, length);
+	put_unaligned_le32(~crc, out);
+
+	return 0;
+}
+
 int hash_xxhash(const u8 *buf, size_t length, u8 *out)
 {
 	XXH64_hash_t hash;
diff --git a/crypto/hash.h b/crypto/hash.h
index 45c1ef17..7298d69d 100644
--- a/crypto/hash.h
+++ b/crypto/hash.h
@@ -5,6 +5,7 @@
 
 #define CRYPTO_HASH_SIZE_MAX	32
 
+int hash_crc32c(const u8 *buf, size_t length, u8 *out);
 int hash_xxhash(const u8 *buf, size_t length, u8 *out);
 
 #endif