A stack which works with or without an Mbed os library. Provides IPv4 or IPv6 with a full 1500 byte buffer.
Dependents: oldheating gps motorhome heating
ip6/slaac.c
- Committer:
- andrewboyson
- Date:
- 2021-05-20
- Revision:
- 200:5acbc41bf469
- Parent:
- 172:9bc3c7b2cca1
File content as of revision 200:5acbc41bf469:
#include <string.h> #include "mac.h" #include "ip6addr.h" char SlaacLinkLocalIp[16]; char SlaacUniqueLocalIp[16]; char SlaacGlobalIp[16]; int SlaacScope(char* ip) { if (Ip6AddrIsSame(ip, SlaacLinkLocalIp)) return SCOPE_LINK_LOCAL; if (Ip6AddrIsSame(ip, SlaacGlobalIp )) return SCOPE_GLOBAL; return SCOPE_NONE; } void SlaacAddressFromScope(int scope, char* pSrcIp) { switch (scope) { case SCOPE_GLOBAL: Ip6AddrCopy(pSrcIp, SlaacGlobalIp ); break; case SCOPE_UNIQUE_LOCAL: Ip6AddrCopy(pSrcIp, SlaacUniqueLocalIp); break; default: Ip6AddrCopy(pSrcIp, SlaacLinkLocalIp ); break; } //Note that scope could be SCOPE_NONE if source was multicast in which case should return the link local ip. } void SlaacMakeGlobal(char* pPrefix) { memcpy(SlaacGlobalIp, pPrefix, 8); char* p = SlaacGlobalIp + 8; *p++ = MacLocal[0] | 0x02; //Modified EUI-64 *p++ = MacLocal[1]; *p++ = MacLocal[2]; *p++ = 0xFF; *p++ = 0xFE; *p++ = MacLocal[3]; *p++ = MacLocal[4]; *p++ = MacLocal[5]; } void SlaacMakeUniqueLocal(char* pPrefix) { memcpy(SlaacUniqueLocalIp, pPrefix, 8); char* p = SlaacUniqueLocalIp + 8; *p++ = MacLocal[0] | 0x02; //Modified EUI-64 *p++ = MacLocal[1]; *p++ = MacLocal[2]; *p++ = 0xFF; *p++ = 0xFE; *p++ = MacLocal[3]; *p++ = MacLocal[4]; *p++ = MacLocal[5]; } void SlaacInit() { char* p = SlaacLinkLocalIp; //fe80::::202:f7ff:fef2:7d27 *p++ = 0xFE; *p++ = 0x80; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = 0x00; *p++ = MacLocal[0] | 0x02; //Modified EUI-64 *p++ = MacLocal[1]; *p++ = MacLocal[2]; *p++ = 0xFF; *p++ = 0xFE; *p++ = MacLocal[3]; *p++ = MacLocal[4]; *p++ = MacLocal[5]; }