perf: use GSO

[mxinden]

Depends on https://github.com/mozilla/neqo/pull/2093. All, but last commit, part of #2093. Part of https://github.com/mozilla/neqo/issues/1693.

Proof of concept for now. Thus Draft.

Compiles. Download benchmark works. Without PMTUD I see up to 64 UDP segments on a GSO sendmsg call.

[github-actions[bot]]

Failed Interop Tests

QUIC Interop Runner, client vs. server

neqo-latest as client

• neqo-latest vs. aioquic: H DC LR C20 M S R Z 3 B U A L1 L2 C1 C2 6 V2
• neqo-latest vs. go-x-net: H DC LR M B U A L2 C2 6
• neqo-latest vs. haproxy: H DC LR C20 M S R Z 3 B U A L1 L2 C1 C2 6 V2
• neqo-latest vs. kwik: H DC LR C20 M S R Z 3 B U A L1 L2 C1 C2 6 V2
• neqo-latest vs. lsquic: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• neqo-latest vs. msquic: run cancelled after 20 min
• neqo-latest vs. mvfst: H DC LR M R Z 3 B U A L1 L2 C1 C2 6
• neqo-latest vs. neqo: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• neqo-latest vs. neqo-latest: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• neqo-latest vs. nginx: H DC LR C20 M S R Z 3 B U A L1 L2 C1 C2 6
• neqo-latest vs. ngtcp2: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• neqo-latest vs. picoquic: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• neqo-latest vs. quic-go: H DC LR C20 M S R Z 3 B U A L1 L2 C1 C2 6
• neqo-latest vs. quiche: H DC LR C20 M S R Z 3 B U A L1 L2 C1 C2 6
• neqo-latest vs. quinn: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6
• neqo-latest vs. s2n-quic: H DC LR C20 M S R 3 B U E A L1 L2 C1 C2 6
• neqo-latest vs. xquic: H DC LR C20 M R Z 3 B U A L1 L2 C1 C2 6

neqo-latest as server

• aioquic vs. neqo-latest: H DC LR C20 M S R Z 3 B A L1 L2 C1 C2 6 V2
• chrome vs. neqo-latest: 3
• go-x-net vs. neqo-latest: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• kwik vs. neqo-latest: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• lsquic vs. neqo-latest: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• msquic vs. neqo-latest: H DC LR C20 M S R Z B U A L1 L2 C1 C2 6 V2
• mvfst vs. neqo-latest: H DC LR M R Z 3 B A L1 L2 C1 C2 6
• neqo vs. neqo-latest: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• ngtcp2 vs. neqo-latest: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• picoquic vs. neqo-latest: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• quic-go vs. neqo-latest: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• quiche vs. neqo-latest: H DC LR M S R Z 3 B A L1 L2 C1 C2 6
• quinn vs. neqo-latest: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• s2n-quic vs. neqo-latest: H DC LR C20 M S R Z 3 B U E A L1 L2 C1 C2 6 V2
• xquic vs. neqo-latest: H DC LR C20 M S R Z 3 B U A L1 L2 C1 C2 6

All results

Succeeded Interop Tests

None :question:

Unsupported Interop Tests

QUIC Interop Runner, client vs. server

neqo-latest as client

• neqo-latest vs. aioquic: E
• neqo-latest vs. go-x-net: C20 S R Z 3 E L1 C1 V2
• neqo-latest vs. haproxy: E
• neqo-latest vs. kwik: E
• neqo-latest vs. mvfst: C20 S E V2
• neqo-latest vs. nginx: E V2
• neqo-latest vs. quic-go: E V2
• neqo-latest vs. quiche: E V2
• neqo-latest vs. quinn: V2
• neqo-latest vs. s2n-quic: Z V2
• neqo-latest vs. xquic: S E V2

neqo-latest as server

• aioquic vs. neqo-latest: U E
• chrome vs. neqo-latest: H DC LR C20 M S R Z B U E A L1 L2 C1 C2 6 V2
• msquic vs. neqo-latest: 3 E
• mvfst vs. neqo-latest: C20 S U E V2
• quiche vs. neqo-latest: C20 U E V2
• xquic vs. neqo-latest: E V2

[mxinden]

If we do want to tackle GSO in the future, this can serve as guidance. That said, best to start fresh.

Work tracked in https://github.com/mozilla/neqo/issues/1693. Closing here.