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Raphaël Beamonte authored
Prefer ether_addr_copy() over memcpy() if the Ethernet addresses are __aligned(2) The values used are stored as dev_addr in net_device (declared in include/linux/netdevice.h) and sa_data in sockaddr (declared in include/linux/socket.h). Both these elements are u16 aligned as shown by using pahole (position must be a multiple of sizeof(u16)): unsigned char * dev_addr; /* 888 8 */ char sa_data[14]; /* 2 14 */ It is thus safe to use ether_addr_copy() instead of memcpy() for that call, as it is already done in multiple files in the Linux kernel sources: drivers/net/ethernet/broadcom/genet/bcmgenet.c drivers/net/ethernet/brocade/bna/bnad.c drivers/net/ethernet/emulex/benet/be_main.c drivers/net/ethernet/ezchip/nps_enet.c drivers/net/ethernet/ibm/ibmveth.c drivers/net/ethernet/intel/fm10k/fm10k_netdev.c drivers/net/ethernet/intel/i40e/i40e_main.c drivers/net/ethernet/mellanox/mlx5/core/en_main.c drivers/net/usb/lan78xx.c net/8021q/vlan_dev.c net/batman-adv/soft-interface.c net/dsa/slave.c Signed-off-by: Raphaël Beamonte <raphael.beamonte@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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