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internet: Do NOT Add identical route entries in Routing table for GlobalRouting

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This commit is contained in:
Shashwat Patni
2025-08-03 16:39:10 +05:30
parent a17161947b
commit 3ff4a45e75
1 changed files with 40 additions and 0 deletions
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40
src/internet/model/ipv4-global-routing.cc
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@@ -71,6 +71,14 @@ Ipv4GlobalRouting::AddHostRouteTo(Ipv4Address dest, Ipv4Address nextHop, uint32_
NS_LOG_FUNCTION(this << dest << nextHop << interface);
auto route = new Ipv4RoutingTableEntry();
*route = Ipv4RoutingTableEntry::CreateHostRouteTo(dest, nextHop, interface);
for (auto routePointer : m_hostRoutes)
{
if (*routePointer == *route)
{
NS_LOG_LOGIC("Route already exists");
return;
}
}
m_hostRoutes.push_back(route);
}
@@ -80,6 +88,14 @@ Ipv4GlobalRouting::AddHostRouteTo(Ipv4Address dest, uint32_t interface)
NS_LOG_FUNCTION(this << dest << interface);
auto route = new Ipv4RoutingTableEntry();
*route = Ipv4RoutingTableEntry::CreateHostRouteTo(dest, interface);
for (auto routePointer : m_hostRoutes)
{
if (*routePointer == *route)
{
NS_LOG_LOGIC("Route already exists");
return;
}
}
m_hostRoutes.push_back(route);
}
@@ -92,6 +108,14 @@ Ipv4GlobalRouting::AddNetworkRouteTo(Ipv4Address network,
NS_LOG_FUNCTION(this << network << networkMask << nextHop << interface);
auto route = new Ipv4RoutingTableEntry();
*route = Ipv4RoutingTableEntry::CreateNetworkRouteTo(network, networkMask, nextHop, interface);
for (auto routePointer : m_networkRoutes)
{
if (*routePointer == *route)
{
NS_LOG_LOGIC("Route already exists");
return;
}
}
m_networkRoutes.push_back(route);
}
@@ -101,6 +125,14 @@ Ipv4GlobalRouting::AddNetworkRouteTo(Ipv4Address network, Ipv4Mask networkMask,
NS_LOG_FUNCTION(this << network << networkMask << interface);
auto route = new Ipv4RoutingTableEntry();
*route = Ipv4RoutingTableEntry::CreateNetworkRouteTo(network, networkMask, interface);
for (auto routePointer : m_networkRoutes)
{
if (*routePointer == *route)
{
NS_LOG_LOGIC("Route already exists");
return;
}
}
m_networkRoutes.push_back(route);
}
@@ -113,6 +145,14 @@ Ipv4GlobalRouting::AddASExternalRouteTo(Ipv4Address network,
NS_LOG_FUNCTION(this << network << networkMask << nextHop << interface);
auto route = new Ipv4RoutingTableEntry();
*route = Ipv4RoutingTableEntry::CreateNetworkRouteTo(network, networkMask, nextHop, interface);
for (auto routePointer : m_ASexternalRoutes)
{
if (*routePointer == *route)
{
NS_LOG_LOGIC("Route already exists");
return;
}
}
m_ASexternalRoutes.push_back(route);
}