[tipc-discussion] netns in TIPC

[Erik H. <eri...@er...>]

I have started looking in to the details of how to support network 
namespaces in TIPC.

I was thinking as a first approach to identify all global structures, 
variables and lists unique to a TIPC instance.
These should be wrapped in a new struct (tipc_net) that is instantiated 
for each new netns. A reference to the correct instance can be fetched 
with a call to:
 > static inline void *net_generic(const struct net *net, int id)
Other than the global parameters (tipc_own_addr, tipc_net_id etc..)
we should store the list head pointers for the nametable, 
tipc_ref_table, bearer_list, media_list, node_htable..
When a packet is received from the network, we fetch a reference to the 
tipc_net struct and pass this along in packet delivery chain (maybe we 
can store the pointer directly in the sk_buff->cb field?).

It's tempting to start littering the code with 'struct net' references, 
but i think we should be careful with this.

Thoughts, questions and input is very welcome.

//E