Hello
I'm working on virtual ethernet driver which sends and receives frames
through physical device. It has to deal with high speed transfers (1Gb/s).
I've already registered new packet_type with dev_add_pack. That way, my
function (let's call it skb_recv) gets all received packets of given type.
My question is, since driver needs to handle congestions and there is no
longer cng_level variable available in kernel, how to check whether I'm
loosing packets?
I might check net_device_stats->rx_dropped of physical device but sadly
it's 0 all the time (even though I'm sure packets are dropped). Maybe
it's because I'm testing on VMware and they haven't implemented it
correctly?
Another thing: where exactly packets are dropped? Does dropping depends
on how many work I do in my skb_recv function? I know it's called from
softirq context... Should I implement any additional packet buffers in
skb_recv?
Thanks for all tips
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