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| author | Simon Rettberg | 2020-03-19 20:43:15 +0100 |
|---|---|---|
| committer | Simon Rettberg | 2020-03-19 20:43:15 +0100 |
| commit | 3d2f1f605e07b511c4ebf79c936c7061dd918957 (patch) | |
| tree | 038a12005263204797de9a71882cd084fd7f81e5 /src/types.h | |
| parent | [SERVER] Shorter wait when closing socket after reply (diff) | |
| download | dnbd3-3d2f1f605e07b511c4ebf79c936c7061dd918957.tar.gz dnbd3-3d2f1f605e07b511c4ebf79c936c7061dd918957.tar.xz dnbd3-3d2f1f605e07b511c4ebf79c936c7061dd918957.zip | |
[SERVER] Use PCLMUL for crc32 on AMD64 if available
This is about 16x as fast as before with the lookup table
for processing 4 bytes at a time and should work on any AMD64
CPU made in the last decade.
We still need an AltiVec implementation for G5 though.
Diffstat (limited to 'src/types.h')
| -rw-r--r-- | src/types.h | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/src/types.h b/src/types.h index dc8e501..83416f4 100644 --- a/src/types.h +++ b/src/types.h @@ -95,9 +95,7 @@ (a).size = net_order_32((a).size); \ } while (0) #define ENDIAN_MODE "Big Endian" -#ifndef BIG_ENDIAN -#define BIG_ENDIAN -#endif +#define DNBD3_BIG_ENDIAN #elif defined(__LITTLE_ENDIAN__) || (defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN) || (defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || defined(__i386__) || defined(__i386) || defined(__x86_64) #define dnbd3_packet_magic ((uint16_t)( (0x73) | (0x72 << 8) )) // Make little endian our network byte order as probably 99.999% of machines this will be used on are LE @@ -107,9 +105,7 @@ #define fixup_request(a) while(0) #define fixup_reply(a) while(0) #define ENDIAN_MODE "Little Endian" -#ifndef LITTLE_ENDIAN -#define LITTLE_ENDIAN -#endif +#define DNBD3_LITTLE_ENDIAN #else #error "Unknown Endianness" #endif @@ -156,10 +152,10 @@ typedef struct __attribute__((packed)) uint32_t size; // 4byte union { struct { -#ifdef LITTLE_ENDIAN +#ifdef DNBD3_LITTLE_ENDIAN uint64_t offset_small:56; // 7byte uint8_t hops; // 1byte -#elif defined(BIG_ENDIAN) +#elif defined(DNBD3_BIG_ENDIAN) uint8_t hops; // 1byte uint64_t offset_small:56; // 7byte #endif |