On Mon, 19 Jan 2026 19:58:52 +0100 [email protected] wrote: > Linux Accurate ECN test sets using ACE counters and AccECN options to > cover several scenarios: Connection teardown, different ACK conditions, > counter wrapping, SACK space grabbing, fallback schemes, negotiation > retransmission/reorder/loss, AccECN option drop/loss, different > handshake reflectors, data with marking, and different sysctl values.
Thank you for closing the packetdrill side, and big thanks to Neal for prioritizing getting it reviewed and merged! I updated the packetdrill build in netdev CI and looks like one of the cases is flaking a little. Since it looks like you'll have to respin, please try to fix: # 1..2 # tcp_accecn_client_accecn_options_lost.pkt:32: error handling packet: timing error: expected outbound packet in relative time range +0.020000~+0.500000 sec but happened at +0.015816 sec # script packet: 0.181936 .5 1:1013(1012) ack 1 <ECN e1b 1 ceb 0 e0b 1,nop> # actual packet: 0.177752 .EA 1:1013(1012) ack 1 win 1050 <ECN e1b 1 ceb 0 e0b 1,nop> # not ok 1 ipv4 # tcp_accecn_client_accecn_options_lost.pkt:32: error handling packet: timing error: expected outbound packet in relative time range +0.020000~+0.500000 sec but happened at +0.015800 sec # script packet: 0.181952 .5 1:1013(1012) ack 1 <ECN e1b 1 ceb 0 e0b 1,nop> # actual packet: 0.177752 .EA 1:1013(1012) ack 1 win 1050 <ECN e1b 1 ceb 0 e0b 1,nop> # not ok 2 ipv6 # # Totals: pass:0 fail:2 xfail:0 xpass:0 skip:0 error:0 https://netdev-ctrl.bots.linux.dev/logs/vmksft/packetdrill/results/482201/115-tcp-accecn-client-accecn-options-lost-pkt/stdout
