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Cedar/IPC: Improve IPv6CP configuration

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This commit is contained in:
Yihong Wu
2023-01-28 09:05:28 +00:00
parent 0e8174c6cf
commit 0cdf0eacbf
3 changed files with 23 additions and 52 deletions
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29
src/Cedar/Proto_PPP.c
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@ -2191,7 +2191,7 @@ bool PPPProcessIPv6CPRequestPacket(PPP_SESSION *p, PPP_PACKET *pp)
{
UINT64 newValue = 0;
UINT64 value = READ_UINT64(t->Data);
if (value != 0 && IPCIPv6CheckExistingLinkLocal(p->Ipc, value) == false)
if (value != 0 && value != p->Ipc->IPv6ServerEUI && IPCIPv6CheckExistingLinkLocal(p->Ipc, value) == false)
{
t->IsAccepted = true;
p->Ipc->IPv6ClientEUI = value;
@ -2199,23 +2199,14 @@ bool PPPProcessIPv6CPRequestPacket(PPP_SESSION *p, PPP_PACKET *pp)
else
{
t->IsAccepted = false;
GenerateEui64Address6((UCHAR *)&newValue, p->Ipc->MacAddress);
if (newValue != value && IPCIPv6CheckExistingLinkLocal(p->Ipc, newValue) == false)
while (true)
{
WRITE_UINT64(t->AltData, newValue);
t->AltDataSize = sizeof(UINT64);
}
else
{
while (true)
newValue = Rand64();
if (newValue != 0 && newValue != p->Ipc->IPv6ServerEUI && IPCIPv6CheckExistingLinkLocal(p->Ipc, newValue) == false)
{
newValue = Rand64();
if (IPCIPv6CheckExistingLinkLocal(p->Ipc, newValue) == false)
{
WRITE_UINT64(t->AltData, newValue);
t->AltDataSize = sizeof(UINT64);
break;
}
WRITE_UINT64(t->AltData, newValue);
t->AltDataSize = sizeof(UINT64);
break;
}
}
}
@ -2242,11 +2233,7 @@ bool PPPProcessIPv6CPRequestPacket(PPP_SESSION *p, PPP_PACKET *pp)
if (p->Ipc->IPv6ClientEUI != 0 && IPC_PROTO_GET_STATUS(p->Ipc, IPv6State) == IPC_PROTO_STATUS_CLOSED)
{
PPP_LCP *c = NewPPPLCP(PPP_LCP_CODE_REQ, 0);
UINT64 serverEui = IPCIPv6GetServerEui(p->Ipc);
if (serverEui != 0 && serverEui != p->Ipc->IPv6ClientEUI)
{
Add(c->OptionList, NewPPPOption(PPP_IPV6CP_OPTION_EUI, &serverEui, sizeof(UINT64)));
}
Add(c->OptionList, NewPPPOption(PPP_IPV6CP_OPTION_EUI, &p->Ipc->IPv6ServerEUI, sizeof(UINT64)));
if (PPPSendAndRetransmitRequest(p, PPP_PROTOCOL_IPV6CP, c) == false)
{
PPPSetStatus(p, PPP_STATUS_FAIL);