Andrew Boyson / net

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@167:3ba4e3c49631, 2020-04-02 (annotated)

Committer:
andrewboyson
Date:
Thu Apr 02 19:08:25 2020 +0000
Revision:
167:3ba4e3c49631
Parent:
80:4ef1500fca1d
Child:
172:9bc3c7b2cca1
Modified resolution cache ajaxs to include the index

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andrewboyson 61:aad055f1b0d1 1 #include <string.h>
andrewboyson 61:aad055f1b0d1 2
andrewboyson 80:4ef1500fca1d 3 #include "mac.h"
andrewboyson 49:1a6336f2b3f9 4 #include "ip6addr.h"
andrewboyson 7:b794780e33b4 5
andrewboyson 7:b794780e33b4 6 char SlaacLinkLocalIp[16];
andrewboyson 15:6ca6778168b1 7 char SlaacGlobalIp[16];
andrewboyson 7:b794780e33b4 8
andrewboyson 44:83ce5ace337b 9 int SlaacScope(char* ip)
andrewboyson 35:93c39d260a83 10 {
andrewboyson 49:1a6336f2b3f9 11 if (Ip6AddressIsSame(ip, SlaacLinkLocalIp)) return SCOPE_LOCAL;
andrewboyson 49:1a6336f2b3f9 12 if (Ip6AddressIsSame(ip, SlaacGlobalIp )) return SCOPE_GLOBAL;
andrewboyson 44:83ce5ace337b 13 return SCOPE_NONE;
andrewboyson 35:93c39d260a83 14 }
andrewboyson 49:1a6336f2b3f9 15 void SlaacAddressFromScope(int scope, char* pSrcIp)
andrewboyson 49:1a6336f2b3f9 16 {
andrewboyson 49:1a6336f2b3f9 17 if (scope == SCOPE_GLOBAL) Ip6AddressCopy(pSrcIp, SlaacGlobalIp );
andrewboyson 49:1a6336f2b3f9 18 else Ip6AddressCopy(pSrcIp, SlaacLinkLocalIp);
andrewboyson 49:1a6336f2b3f9 19 //Note that scope could be SCOPE_NONE if source was multicast in which case should return the link local ip.
andrewboyson 49:1a6336f2b3f9 20 }
andrewboyson 49:1a6336f2b3f9 21
andrewboyson 15:6ca6778168b1 22 void SlaacMakeGlobal(char* pPrefix)
andrewboyson 15:6ca6778168b1 23 {
andrewboyson 15:6ca6778168b1 24 memcpy(SlaacGlobalIp, pPrefix, 8);
andrewboyson 15:6ca6778168b1 25 char* p = SlaacGlobalIp + 8;
andrewboyson 15:6ca6778168b1 26 *p++ = MacLocal[0] | 0x02; //Modified EUI-64
andrewboyson 15:6ca6778168b1 27 *p++ = MacLocal[1];
andrewboyson 15:6ca6778168b1 28 *p++ = MacLocal[2];
andrewboyson 15:6ca6778168b1 29 *p++ = 0xFF;
andrewboyson 15:6ca6778168b1 30 *p++ = 0xFE;
andrewboyson 15:6ca6778168b1 31 *p++ = MacLocal[3];
andrewboyson 15:6ca6778168b1 32 *p++ = MacLocal[4];
andrewboyson 15:6ca6778168b1 33 *p++ = MacLocal[5];
andrewboyson 15:6ca6778168b1 34
andrewboyson 15:6ca6778168b1 35 }
andrewboyson 7:b794780e33b4 36 void SlaacInit()
andrewboyson 7:b794780e33b4 37 {
andrewboyson 37:793b39683406 38 char* p = SlaacLinkLocalIp; //fe80::::202:f7ff:fef2:7d27
andrewboyson 7:b794780e33b4 39 *p++ = 0xFE;
andrewboyson 7:b794780e33b4 40 *p++ = 0x80;
andrewboyson 7:b794780e33b4 41 *p++ = 0x00;
andrewboyson 7:b794780e33b4 42 *p++ = 0x00;
andrewboyson 7:b794780e33b4 43 *p++ = 0x00;
andrewboyson 7:b794780e33b4 44 *p++ = 0x00;
andrewboyson 7:b794780e33b4 45 *p++ = 0x00;
andrewboyson 7:b794780e33b4 46 *p++ = 0x00;
andrewboyson 13:9cd54f7db57a 47 *p++ = MacLocal[0] | 0x02; //Modified EUI-64
andrewboyson 13:9cd54f7db57a 48 *p++ = MacLocal[1];
andrewboyson 13:9cd54f7db57a 49 *p++ = MacLocal[2];
andrewboyson 7:b794780e33b4 50 *p++ = 0xFF;
andrewboyson 7:b794780e33b4 51 *p++ = 0xFE;
andrewboyson 13:9cd54f7db57a 52 *p++ = MacLocal[3];
andrewboyson 13:9cd54f7db57a 53 *p++ = MacLocal[4];
andrewboyson 13:9cd54f7db57a 54 *p++ = MacLocal[5];
andrewboyson 7:b794780e33b4 55 }