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    GRE: Refactor GRE tunneling code. · c5441932
    Pravin B Shelar 提交于
    Following patch refactors GRE code into ip tunneling code and GRE
    specific code. Common tunneling code is moved to ip_tunnel module.
    ip_tunnel module is written as generic library which can be used
    by different tunneling implementations.
    
    ip_tunnel module contains following components:
     - packet xmit and rcv generic code. xmit flow looks like
       (gre_xmit/ipip_xmit)->ip_tunnel_xmit->ip_local_out.
     - hash table of all devices.
     - lookup for tunnel devices.
     - control plane operations like device create, destroy, ioctl, netlink
       operations code.
     - registration for tunneling modules, like gre, ipip etc.
     - define single pcpu_tstats dev->tstats.
     - struct tnl_ptk_info added to pass parsed tunnel packet parameters.
    
    ipip.h header is renamed to ip_tunnel.h
    Signed-off-by: NPravin B Shelar <pshelar@nicira.com>
    Signed-off-by: NDavid S. Miller <davem@davemloft.net>
    c5441932
af_inet6.c 24.6 KB