I would suggest using error-drop unless the number of clock cycles saved by freeing packets directly somehow makes a first-order difference in your use-case.
The "error-drop" scheme results in more obvious packet tracer output, supports N different drop causes by construction, and yields better looking dispatch pcap traces. In cases where one might want to punt unhandled traffic, it's possible to do so. FWIW... Dave -----Original Message----- From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> On Behalf Of Christian Hopps Sent: Tuesday, July 16, 2019 5:21 AM To: vpp-dev <vpp-dev@lists.fd.io> Cc: Christian Hopps <cho...@chopps.org> Subject: [vpp-dev] Drop vs Free? Hi vpp-dev, I'm wondering if it is OK to collect the buffers I wish to drop together in my node and free them at the end vs sending them to a drop node. I am tracking the drops in my nodes error counter so I have a way to track them, but given there is real processing overhead to actually send them on to another specific drop node for processing I'm wondering if I'm missing something important here by not sending doing that. Thanks, Chris.
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