net: add helper eth_hw_addr_crc (b86cd700) · Commits · 戴 / test

Several drivers use the same code as basis for filter hashes. Therefore let's factor it out to a helper. This way drivers don't have to access struct netdev_hw_addr internals. Signed-off-by:

Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

include/linux/etherdevice.h

+12 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@
		#include <linux/if_ether.h>
		#include <linux/netdevice.h>
		#include <linux/random.h>
		#include <linux/crc32.h>
		#include <asm/unaligned.h>
		#include <asm/bitsperlong.h>

		@@ -265,6 +266,17 @@ static inline void eth_hw_addr_random(struct net_device *dev)
		eth_random_addr(dev->dev_addr);
		}

		/**
		* eth_hw_addr_crc - Calculate CRC from netdev_hw_addr
		* @ha: pointer to hardware address
		*
		* Calculate CRC from a hardware address as basis for filter hashes.
		*/
		static inline u32 eth_hw_addr_crc(struct netdev_hw_addr *ha)
		{
		return ether_crc(ETH_ALEN, ha->addr);
		}

		/**
		* ether_addr_copy - Copy an Ethernet address
		* @dst: Pointer to a six-byte array Ethernet address destination

Admin message