[net-next 04/12] e1000e: use either_crc_le() rather than re-write it
flat view
STALE5703d
REVIEWED: 1 (0M)
From: <hidden>
Date: 2011-01-07 00:30:47
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v1 of 3 in this series; 1 review trailer.
From: Bruce Allan <redacted> 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 <redacted> Tested-by: Jeff Pieper <redacted> Signed-off-by: Jeff Kirsher <redacted> --- drivers/net/e1000e/e1000.h | 1 + drivers/net/e1000e/ich8lan.c | 19 +------------------ 2 files changed, 2 insertions(+), 18 deletions(-)
diff --git a/drivers/net/e1000e/e1000.h b/drivers/net/e1000e/e1000.h
index 2c913b8..4b3802a 100644
--- a/drivers/net/e1000e/e1000.h
+++ b/drivers/net/e1000e/e1000.h@@ -38,6 +38,7 @@ #include <linux/netdevice.h> #include <linux/pci.h> #include <linux/pci-aspm.h> +#include <linux/crc32.h> #include "hw.h"
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 @@ void e1000_copy_rx_addrs_to_phy_ich8lan(struct e1000_hw *hw) } } -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 @@ s32 e1000_lv_jumbo_workaround_ich8lan(struct e1000_hw *hw, bool enable) 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 */
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1.7.3.4