suricata

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Commit Graph

Author	SHA1	Message	Date
Roland Fischer	9f1efa3c10	pcap: 32bit counters can wrap-around Fixes issue 2845. pcap_stats is based on 32bit counters and given a big enough throughput will overflow them. This was reported by people using Myricom cards which should only be a happenstance. The problem exists for all pcap-based interfaces. Let's use internal 64bit counters that drag along the pcap_stats and handle pcap_stats wrap-around as we update the 64bit stats "often enough" before the pcap_stats can wrap around twice.	6 years ago

Author

SHA1

Message

Date

Roland Fischer

9f1efa3c10

pcap: 32bit counters can wrap-around

Fixes issue 2845.

pcap_stats is based on 32bit counters and given a big enough throughput
will overflow them. This was reported by people using Myricom cards which
should only be a happenstance. The problem exists for all pcap-based
interfaces.

Let's use internal 64bit counters that drag along the pcap_stats and
handle pcap_stats wrap-around as we update the 64bit stats "often enough"
before the pcap_stats can wrap around twice.

1 Commits (9869fb776bf3e3a3d2aa006a5e8bf5da75e3d475)