Add optimized crc32c

2019-11-25 02:30:06 +03:00
parent be3015169f
commit d0fdcbd7ff
3 changed files with 362 additions and 107 deletions
@@ -40,6 +40,7 @@ struct __attribute__((__packed__)) journal_entry_small_write
    // small_write entries contain <len> bytes of data which is stored in next sectors
    // data_offset is its offset within journal
    uint64_t data_offset;
+    // FIXME add & verify data crc32c
 };

 struct __attribute__((__packed__)) journal_entry_big_write
@@ -98,7 +99,8 @@ struct __attribute__((__packed__)) journal_entry

 inline uint32_t je_crc32(journal_entry *je)
 {
-    return crc32c_zero4(((uint8_t*)je)+4, je->size-4);
+    // 0x48674bc7 = crc32(4 zero bytes)
+    return crc32c(0x48674bc7, ((uint8_t*)je)+4, je->size-4);
 }

 struct journal_sector_info_t