NIC inerrupt

[John Que]

Hello,

I want to count the number of times I reach an NIC receive
interrupt.

I added a global static variable of type int , and initialized
it to 0 ; each time I am in the rx_interrupt of the card I incerement
it by one;
I got large , non sensible numbers after one or two seconds;

So  for debug I added printk each time I increment it in rx_interrupt.

What I see is that there are  unreasonable jumps in the number

for instance , it inceremnts sequntially from 1 to 80,then jums to 4500, 
increments a little sequentially to 4580, and the jums again to
11000 ;

Is it got to do with it that this is in interrupt?
Any idea what it can be ?


(I also tried to declare it as static in the rx_interrupt method
and the same happened)

Thnx,
John

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