From 74b8ced1eee373ada8554ddbcb0e8a1bd8b7c574 Mon Sep 17 00:00:00 2001
From: Sebastian Vater
Date: Thu, 24 Jul 2025 15:55:42 +0200
Subject: Made fast hashing a little bit more readable and fixed address
 increment for next hash data value (should be 8 bytes instead of 1).

---
 src/server/iscsi.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/server/iscsi.c')

diff --git a/src/server/iscsi.c b/src/server/iscsi.c
index 925e4e8..c5f796d 100644
--- a/src/server/iscsi.c
+++ b/src/server/iscsi.c
@@ -185,12 +185,13 @@ static int iscsi_hashmap_resize(iscsi_hashmap *map)
  */
 static inline uint32_t iscsi_hashmap_hash_data(const uint8_t *data, const size_t len)
 {
+	const uint64_t *hash_data = (const uint64_t *) data;
 	size_t num_blocks = iscsi_align(len, ISCSI_HASHMAP_KEY_ALIGN) >> ISCSI_HASHMAP_KEY_ALIGN_SHIFT;
 	uint64_t hash = ISCSI_HASHMAP_HASH_INITIAL;
 
 	do {
-		hash ^= *(uint64_t *) data++; // Hash 8 bytes of data at once
-		hash *= ISCSI_HASHMAP_HASH_XOR;
+		hash ^= *hash_data++;
+		hash *= ISCSI_HASHMAP_HASH_MUL;
 	} while ( --num_blocks > 0UL );
 
 	return (uint32_t) (hash ^ hash >> 32ULL);
-- 
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