Returns

Returns REQ_PROCEED if the specified filter was inserted successfully, or REQ_NOACTION if the specified filter was not inserted because it was not required. Any other return value indicates an error.

Parameters

SYS_NETFD sd is NULL (reserved for future use).

pblock *pb is a set of parameters to pass to the specified filter’s init method.

Session *sn identifies the Session structure.

Request *rq identifies the Request structure.

void *data is filter-defined private data.

const Filter *filter is the filter to insert.