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[ip6] simplify Ip6::ShouldForwardToThread() (#7706)

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This commit is contained in:
Abtin Keshavarzian
2022-05-18 15:35:05 -07:00
committed by GitHub
parent a51a6311e9
commit ab57ca2f44
1 changed files with 9 additions and 23 deletions
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src/core/net/ip6.cpp
+9 -23
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@@ -1309,43 +1309,29 @@ exit:
bool Ip6::ShouldForwardToThread(const MessageInfo &aMessageInfo, bool aFromHost) const
{
OT_UNUSED_VARIABLE(aFromHost);
bool shouldForward = false;
bool rval = false;
if (aMessageInfo.GetSockAddr().IsMulticast())
if (aMessageInfo.GetSockAddr().IsMulticast() || aMessageInfo.GetSockAddr().IsLinkLocal())
{
// multicast
ExitNow(rval = true);
}
else if (aMessageInfo.GetSockAddr().IsLinkLocal())
{
// on-link link-local address
ExitNow(rval = true);
shouldForward = true;
}
else if (IsOnLink(aMessageInfo.GetSockAddr()))
{
// on-link global address
#if OPENTHREAD_FTD && OPENTHREAD_CONFIG_BACKBONE_ROUTER_DUA_NDPROXYING_ENABLE
ExitNow(rval = (aFromHost ||
!Get<BackboneRouter::Manager>().ShouldForwardDuaToBackbone(aMessageInfo.GetSockAddr())));
shouldForward =
(aFromHost || !Get<BackboneRouter::Manager>().ShouldForwardDuaToBackbone(aMessageInfo.GetSockAddr()));
#else
ExitNow(rval = true);
OT_UNUSED_VARIABLE(aFromHost);
shouldForward = true;
#endif
}
else if (Get<ThreadNetif>().RouteLookup(aMessageInfo.GetPeerAddr(), aMessageInfo.GetSockAddr(), nullptr) ==
kErrorNone)
{
// route
ExitNow(rval = true);
}
else
{
ExitNow(rval = false);
shouldForward = true;
}
exit:
return rval;
return shouldForward;
}
const Netif::UnicastAddress *Ip6::SelectSourceAddress(MessageInfo &aMessageInfo)