From: Carsten Langgaard <carstenl@mips.com> Date: Wed, 13 Nov 2002 21:08:08 +0100 Jeff Garzik wrote: > Why does this line not reference PKT_BUF_SZ when all the others do? In this case we know the size of the packet and therefore only need to handle that. In the other cases we don't know have big the receiving packet is going to be, so we has to take care of the whole buffer. When you unmap a DMA buffer, which is a resource so this is just like freeing memory, you must specify the exact size you used when creating the mapping to begin with. Franks a lot, David S. Miller davem@redhat.com
