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package nfqueue
import (
"unsafe"
)
import "C"
/*
Cast argument to Queue* before calling the real callback
Notes:
- export cannot be done in the same file (nfqueue.go) else it
fails to build (multiple definitions of C functions)
See https://github.com/golang/go/issues/3497
See https://github.com/golang/go/wiki/cgo
- this cast is caused by the fact that cgo does not support
exporting structs
See https://github.com/golang/go/wiki/cgo
This function must _nerver_ be called directly.
*/
/*
BUG(GoCallbackWrapper): The return value from the Go callback is used as a
verdict. This works, and avoids packets without verdict to be queued, but
prevents using out-of-order replies.
*/
//export GoCallbackWrapper
func GoCallbackWrapper(ptr_q *unsafe.Pointer, ptr_nfad *unsafe.Pointer) int {
q := (*Queue)(unsafe.Pointer(ptr_q))
payload := build_payload(q.c_qh, ptr_nfad)
return q.cb(payload)
}
|
