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https://github.com/xen-project/xen.git
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kaf24@firebug.cl.cam.ac.uk
999ef6d9c5
to my tree but did not appear in 'hg diff'. This patch adds them. Signed-off-by: Mike Wray <mike.wray@hp.com>
143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/*
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* Copyright (C) 2004 Mike Wray <mike.wray@hp.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free software Foundation, Inc.,
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* 59 Temple Place, suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef _VNET_VARP_UTIL_H
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#define _VNET_VARP_UTIL_H
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#include "hash_table.h"
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/** Size of a string buffer to store a varp address. */
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#define VARP_ADDR_BUF 56
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/** Size of a string buffer to store a vnet id. */
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#define VNET_ID_BUF 56
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#ifndef NIPQUAD
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#define NIPQUAD(addr) \
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((unsigned char *)&addr)[0], \
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((unsigned char *)&addr)[1], \
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((unsigned char *)&addr)[2], \
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((unsigned char *)&addr)[3]
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#endif
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#ifndef NIP6
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#define NIP6(addr) \
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ntohs((addr).s6_addr16[0]), \
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ntohs((addr).s6_addr16[1]), \
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ntohs((addr).s6_addr16[2]), \
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ntohs((addr).s6_addr16[3]), \
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ntohs((addr).s6_addr16[4]), \
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ntohs((addr).s6_addr16[5]), \
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ntohs((addr).s6_addr16[6]), \
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ntohs((addr).s6_addr16[7])
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#endif
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static inline const char *VarpAddr_ntoa(VarpAddr *addr, char buf[VARP_ADDR_BUF])
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{
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switch(addr->family){
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default:
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case AF_INET:
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sprintf(buf, "%u.%u.%u.%u",
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NIPQUAD(addr->u.ip4));
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break;
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case AF_INET6:
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sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x",
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NIP6(addr->u.ip6));
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break;
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}
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return buf;
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}
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static inline const char *VnetId_ntoa(VnetId *vnet, char buf[VNET_ID_BUF])
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{
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sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x",
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ntohs(vnet->u.vnet16[0]), \
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ntohs(vnet->u.vnet16[1]), \
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ntohs(vnet->u.vnet16[2]), \
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ntohs(vnet->u.vnet16[3]), \
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ntohs(vnet->u.vnet16[4]), \
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ntohs(vnet->u.vnet16[5]), \
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ntohs(vnet->u.vnet16[6]), \
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ntohs(vnet->u.vnet16[7]));
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return buf;
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}
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extern int VnetId_aton(const char *s, VnetId *vnet);
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/** Convert an unsigned in host order to a vnet id.
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*/
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static inline struct VnetId toVnetId(uint32_t vnetid){
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struct VnetId vnet = {};
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vnet.u.vnet32[3] = htonl(vnetid);
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return vnet;
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}
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static inline uint32_t VnetId_hash(uint32_t h, VnetId *vnet)
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{
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h = hash_hul(h, vnet->u.vnet32[0]);
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h = hash_hul(h, vnet->u.vnet32[1]);
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h = hash_hul(h, vnet->u.vnet32[2]);
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h = hash_hul(h, vnet->u.vnet32[3]);
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return h;
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}
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static inline int VnetId_eq(VnetId *vnet1, VnetId *vnet2)
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{
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return memcmp(vnet1, vnet2, sizeof(VnetId)) == 0;
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}
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static inline uint32_t VarpAddr_hash(uint32_t h, VarpAddr *addr)
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{
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h = hash_hul(h, addr->family);
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if(addr->family == AF_INET6){
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h = hash_hul(h, addr->u.ip6.s6_addr32[0]);
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h = hash_hul(h, addr->u.ip6.s6_addr32[1]);
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h = hash_hul(h, addr->u.ip6.s6_addr32[2]);
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h = hash_hul(h, addr->u.ip6.s6_addr32[3]);
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} else {
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h = hash_hul(h, addr->u.ip4.s_addr);
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}
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return h;
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}
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static inline int VarpAddr_eq(VarpAddr *addr1, VarpAddr*addr2)
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{
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return memcmp(addr1, addr2, sizeof(VarpAddr)) == 0;
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}
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static inline uint32_t Vmac_hash(uint32_t h, Vmac *vmac)
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{
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h = hash_hul(h,
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(vmac->mac[0] << 24) |
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(vmac->mac[1] << 16) |
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(vmac->mac[2] << 8) |
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(vmac->mac[3] ));
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h = hash_hul(h,
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(vmac->mac[4] << 8) |
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(vmac->mac[5] ));
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return h;
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}
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static inline int Vmac_eq(Vmac *vmac1, Vmac *vmac2)
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{
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return memcmp(vmac1, vmac2, sizeof(Vmac)) == 0;
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}
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#endif /* _VNET_VARP_UTIL_H */
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