[ns] error: field `ifhead_' has incomplete type

[Jeab]

Hello,

I would like to develop a framework to test MAC protocols for wireless sensor network. I am currently modeling my own PHY, MAC, LL, Channel layer, but still have a problem in compilation.

Basically, I modified class &header files in NS2.33 as follow:
mac/channel --> wsn/wsn-channel
mac/phy  --> wsn/wsn-phy
mac/mac --> wsn/wsn-mac
mac/ll     --> wsn/wsn-ll

The problem is my if_head_wsn pointer cannot be recognized in wsn-channel.h even if it is already defined in wsn-phy.h.

wsn-phy.h
LIST_HEAD(if_head_wsn, WSNPhy);    //Line.58 in phy.h

wsn-channel.h
struct if_head_wsn  ifhead_;               //Line.64 in channel.h

./wsn/wsn-channel.h:19: error: field `ifhead_' has incomplete type  <--error message

As far as I understood, if_head is a pointer to a LIST_HEAD structure, as defined in ~/ns/lib/bsd-list.h. Should it be newly declared in order to be used in other classes? I am not sure if my question is described clearly. Pls suggest, I do appreciate for any idea.

Cheers, Jeab


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