e1000e: use either_crc_le() rather than re-write it
For the 82579 jumbo frame workaround, there is no need to re-write the CRC
calculation functionality already found in the kernel's ether_crc_le().
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index 902e493..5328a292 100644
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -1395,22 +1395,6 @@
}
}
-static u32 e1000_calc_rx_da_crc(u8 mac[])
-{
- u32 poly = 0xEDB88320; /* Polynomial for 802.3 CRC calculation */
- u32 i, j, mask, crc;
-
- crc = 0xffffffff;
- for (i = 0; i < 6; i++) {
- crc = crc ^ mac[i];
- for (j = 8; j > 0; j--) {
- mask = (crc & 1) * (-1);
- crc = (crc >> 1) ^ (poly & mask);
- }
- }
- return ~crc;
-}
-
/**
* e1000_lv_jumbo_workaround_ich8lan - required for jumbo frame operation
* with 82579 PHY
@@ -1453,8 +1437,7 @@
mac_addr[4] = (addr_high & 0xFF);
mac_addr[5] = ((addr_high >> 8) & 0xFF);
- ew32(PCH_RAICC(i),
- e1000_calc_rx_da_crc(mac_addr));
+ ew32(PCH_RAICC(i), ~ether_crc_le(ETH_ALEN, mac_addr));
}
/* Write Rx addresses to the PHY */