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@151:bde6f7da1755, 2019-07-19 (annotated)

Committer:
andrewboyson
Date:
Fri Jul 19 17:48:06 2019 +0000
Revision:
151:bde6f7da1755
Parent:
80:4ef1500fca1d
Child:
172:9bc3c7b2cca1
Removed private key and certificate from semihost storage as found to be unreliable (though secure) and moved it into flash storage (reliable, simple, but visible on mbed.

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 }