diff options
Diffstat (limited to 'drivers/staging/vt6655/tether.c')
| -rw-r--r-- | drivers/staging/vt6655/tether.c | 50 |
1 files changed, 23 insertions, 27 deletions
diff --git a/drivers/staging/vt6655/tether.c b/drivers/staging/vt6655/tether.c index 28554bf75549..a5dc3c09cfd7 100644 --- a/drivers/staging/vt6655/tether.c +++ b/drivers/staging/vt6655/tether.c @@ -47,8 +47,6 @@ /*--------------------- Export Variables --------------------------*/ - - /* * Description: Calculate multicast hash value by CRC32 * @@ -61,28 +59,27 @@ * Return Value: Hash value * */ -unsigned char ETHbyGetHashIndexByCrc32 (unsigned char *pbyMultiAddr) +unsigned char ETHbyGetHashIndexByCrc32(unsigned char *pbyMultiAddr) { - int ii; - unsigned char byTmpHash; - unsigned char byHash = 0; + int ii; + unsigned char byTmpHash; + unsigned char byHash = 0; - // get the least 6-bits from CRC generator - byTmpHash = (unsigned char)(CRCdwCrc32(pbyMultiAddr, ETH_ALEN, - 0xFFFFFFFFL) & 0x3F); - // reverse most bit to least bit - for (ii = 0; ii < (sizeof(byTmpHash) * 8); ii++) { - byHash <<= 1; - if (byTmpHash & 0x01) - byHash |= 1; - byTmpHash >>= 1; - } + // get the least 6-bits from CRC generator + byTmpHash = (unsigned char)(CRCdwCrc32(pbyMultiAddr, ETH_ALEN, + 0xFFFFFFFFL) & 0x3F); + // reverse most bit to least bit + for (ii = 0; ii < (sizeof(byTmpHash) * 8); ii++) { + byHash <<= 1; + if (byTmpHash & 0x01) + byHash |= 1; + byTmpHash >>= 1; + } - // adjust 6-bits to the right most - return (byHash >> 2); + // adjust 6-bits to the right most + return byHash >> 2; } - /* * Description: Check CRC value of the buffer if Ok or not * @@ -96,14 +93,13 @@ unsigned char ETHbyGetHashIndexByCrc32 (unsigned char *pbyMultiAddr) * Return Value: true if ok; false if error. * */ -bool ETHbIsBufferCrc32Ok (unsigned char *pbyBuffer, unsigned int cbFrameLength) +bool ETHbIsBufferCrc32Ok(unsigned char *pbyBuffer, unsigned int cbFrameLength) { - unsigned long dwCRC; + unsigned long dwCRC; - dwCRC = CRCdwGetCrc32(pbyBuffer, cbFrameLength - 4); - if (cpu_to_le32(*((unsigned long *)(pbyBuffer + cbFrameLength - 4))) != dwCRC) { - return false; - } - return true; + dwCRC = CRCdwGetCrc32(pbyBuffer, cbFrameLength - 4); + if (cpu_to_le32(*((unsigned long *)(pbyBuffer + cbFrameLength - 4))) != dwCRC) { + return false; + } + return true; } - |