This read-only integer reports the current, live depth (in cells) of the channel's ingress queue at the moment it's read, the real-time counterpart to the historical high-water-mark chanIngrPeakQDepth. Admins monitor this to see instantaneous queue buildup on the channel, useful for spotting an actively congesting connection in real time rather than only after the fact via peak or discard counters. For example, an admin watching chanIngrCurrQDepth climb steadily toward the configured ingrQDepth in real time could intervene (e.g., checking upstream traffic) before cell loss actually begins.