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tstest/natlab/vnet: capture network wan/lan interfaces

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Updates #13038

Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali
2024-08-08 21:29:09 -07:00
committed by Maisem Ali
parent 7aec8d4e6b
commit 10c2bee9e1
3 changed files with 123 additions and 52 deletions
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22
tstest/natlab/vnet/conf.go
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@@ -14,6 +14,7 @@ import (
"github.com/google/gopacket/layers"
"github.com/google/gopacket/pcapgo"
"tailscale.com/types/logger"
"tailscale.com/util/must"
"tailscale.com/util/set"
)
@@ -206,7 +207,7 @@ func (s *Server) initFromConfig(c *Config) error {
}
s.pcapWriter = pw
}
for _, conf := range c.networks {
for i, conf := range c.networks {
if conf.err != nil {
return conf.err
}
@@ -228,6 +229,14 @@ func (s *Server) initFromConfig(c *Config) error {
return fmt.Errorf("two networks have the same WAN IP %v; Anycast not (yet?) supported", conf.wanIP)
}
s.networkByWAN[conf.wanIP] = n
n.lanInterfaceID = must.Get(s.pcapWriter.AddInterface(pcapgo.NgInterface{
Name: fmt.Sprintf("network%d-lan", i+1),
LinkType: layers.LinkTypeIPv4,
}))
n.wanInterfaceID = must.Get(s.pcapWriter.AddInterface(pcapgo.NgInterface{
Name: fmt.Sprintf("network%d-wan", i+1),
LinkType: layers.LinkTypeIPv4,
}))
}
for i, conf := range c.nodes {
if conf.err != nil {
@@ -235,15 +244,12 @@ func (s *Server) initFromConfig(c *Config) error {
}
n := &node{
mac: conf.mac,
id: i + 1,
net: netOfConf[conf.Network()],
}
if s.pcapWriter != nil {
s.pcapWriter.w.AddInterface(pcapgo.NgInterface{
Name: fmt.Sprintf("node%d", n.id),
LinkType: layers.LinkTypeEthernet,
})
}
n.interfaceID = must.Get(s.pcapWriter.AddInterface(pcapgo.NgInterface{
Name: fmt.Sprintf("node%d", i+1),
LinkType: layers.LinkTypeEthernet,
}))
conf.n = n
if _, ok := s.nodeByMAC[n.mac]; ok {
return fmt.Errorf("two nodes have the same MAC %v", n.mac)