From: Alexey Dobriyan Date: Mon, 10 Apr 2017 08:25:26 +0000 (+0300) Subject: net: make struct net_device::min_header_len 8-bit X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d92be7a41ef15463eb816a4a2d42bf094b56dfce;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git net: make struct net_device::min_header_len 8-bit This field is never big enough to warrant 16-bitness. 8-bit accesses enjoy shorted encoding on i386/x86_64 than 16-bit accesses: add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-10 (-10) function old new delta loopback_setup 169 164 -5 ether_setup 148 143 -5 Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller --- diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 8ea8a8b70755..b0aa089ce67f 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1715,7 +1715,7 @@ struct net_device { unsigned int max_mtu; unsigned short type; unsigned short hard_header_len; - unsigned short min_header_len; + unsigned char min_header_len; unsigned short needed_headroom; unsigned short needed_tailroom;