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add a mask for valid capabilities 

also add a comment stating why capabilities start from 0x80
This commit is contained in:
pooka 2014-03-12 12:59:57 +00:00
parent bbeaaa76ed
commit d4373fc9e7
1 changed files with 3 additions and 1 deletions
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4
sys/net/if.h
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@ -1,4 +1,4 @@
/* $NetBSD: if.h,v 1.160 2014/01/25 21:10:29 christos Exp $ */
/* $NetBSD: if.h,v 1.161 2014/03/12 12:59:57 pooka Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc.
@ -388,6 +388,7 @@ typedef struct ifnet {
#define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */
/* Capabilities that interfaces can advertise. */
/* 0x01 .. 0x40 were previously used */
#define IFCAP_TSOv4 0x00080 /* can do TCPv4 segmentation offload */
#define IFCAP_CSUM_IPv4_Rx 0x00100 /* can do IPv4 header checksums (Rx) */
#define IFCAP_CSUM_IPv4_Tx 0x00200 /* can do IPv4 header checksums (Tx) */
@ -400,6 +401,7 @@ typedef struct ifnet {
#define IFCAP_CSUM_UDPv6_Rx 0x10000 /* can do IPv6/UDP checksums (Rx) */
#define IFCAP_CSUM_UDPv6_Tx 0x20000 /* can do IPv6/UDP checksums (Tx) */
#define IFCAP_TSOv6 0x40000 /* can do TCPv6 segmentation offload */
#define IFCAP_MASK 0x7ff80 /* currently valid capabilities */
#define IFCAPBITS \
"\020" \