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gonetmap's Issues

Add a README

Add a README for your project with description, usage examples, license, etc.

Reuse Base() method in SlotBuffer()

Maybe reuse Base():

gonetmap/ring.go

Lines 34 to 37 in 74913bb

func (r *NetmapRing) Base() (uintptr, uintptr) {
base_ptr := uintptr(unsafe.Pointer(r)) + r.BufOffset
buf_size := uintptr(r.BufSize)
return base_ptr, buf_size
here in SlotBuffer():

gonetmap/ring.go

Lines 67 to 68 in 74913bb

base_ptr := uintptr(unsafe.Pointer(r)) + r.BufOffset
buf_size := uintptr(r.BufSize)

What's the proper way to multithread gonetmap?

I tried several ways to multithread gonetmap but it doesn't work

for ringIndex := uint32(0); ringIndex < iface.Nif.RxRings+1; ringIndex++ {
	ring := iface.GetRing(ringIndex, gonetmap.RX)
	go pollingWorker(iface, ring, 1000) // polling specific ring with processRing(ring)
}
for i := uint32(0); i < 8; i++ {
	ring := iface.GetRing(ringIndex, gonetmap.RX)
	go pollingWorker(iface, 1000)  // a loop create ring and use processRing(ring)
}

It's always fail with

ens192 RX0: fail 'cur < head || cur > kring->nr_hwtail' h 47 c 43 t 47 rh 47 rc 43 rt 47
hc 43 ht 47

Seems like different goroutines change cur/head.

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