question about SwitchNode::SwitchNotifyDequeue(uint32_t ifIndex, uint32_t qIndex, Ptr<Packet> p)

[xuruiiiii]

hello,Yuliang.i have q question. i can't find which part call the function SwitchNode::SwitchNotifyDequeue，and Who generates the parameter 'ifidex' and how it is assigned to ports. i find the idx of 'nexhops' do not match the ifindex.

thank you