I'm trying to write an io-net converter module but I'm having trouble
getting it registered.

 

When my io_net_registrant_t structure contains converter information

 

static io_net_registrant_t ecat_reg = {
_REG_CONVERTOR | _REG_NO_REMOUNT,

"ncm-ecat_en.so", 
"ecat",
"en",
&ecat_ctrl, 
&ecat_funcs,

0, 
{ 0 }, 
0 
};

 

mount fails with the following error.

 

mount: Can't mount / (type io-net)

mount: Possible reason: Invalid argument

 

When I switch the io_net_registrant_t structure to be a filter instead

 

static io_net_registrant_t ecat_reg = {
_REG_FILTER_ABOVE | _REG_NO_REMOUNT | _REG_DEREG_ALL,
"nfm-en_en.so", 
"en",
"en",
&ecat_ctrl, 
&ecat_funcs, 
0, 
{ 0 }, 
0 
};

 

the module registration works just fine.

 

What am I missing for the converter? Does the protocol have to exist
before the converter can be registered?

 

Mark