It was a technique we used previously to rotate between different
buffers without having to use g_malloc/g_free buffers.
Since there might be multiple UDP layers within one and the same
packet (UDP over UDP) we used this as a cheap method to make sure that
two or more consecutive calls to the UDP dissector would use different
buffers.
I have changed the udp dissector now to use the "modern" way to manage
short lived buffers that need not be explicitely freed using
ep_alloc() instead.
On 2/2/07, Vladimir Zherdenovsky <Vladimir.Zherdenovsky@xxxxxxxxxxxxxx> wrote:
Hello,
I just want to understand how the udp dissector works and have
misunderstanding of following codes lines:
static e_udphdr udphstruct[4], *udph;
static int udph_count=0;
udph_count++;
if(udph_count>=4){
udph_count=0;
}
udph=&udphstruct[udph_count];
Could anybody explain why 4 and how it works?
Thanks,
vladimir
