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udp: assign flowid to udp sockets round-robin
630ba2c514d7
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Description

udp: assign flowid to udp sockets round-robin

On a 2x8x2 SKL this increases measured throughput with 64
netperf -H $DUT -t UDP_STREAM -- -m 1

from 590kpps to 1.1Mpps
before:
https://people.freebsd.org/~mmacy/2018.05.11/udpsender.svg
after:
https://people.freebsd.org/~mmacy/2018.05.11/udpsender2.svg

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Provenance
mmacyAuthored on May 23 2018, 8:50 PM
Parents
rGd008c0d75f4c: Centralize USB device mode bus power reporting, and add
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sys/
netinet/

rG630ba2c514d7

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sys/netinet/udp_usrreq.c

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