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From: Victor Stewart <[email protected]>
To: [email protected], [email protected], [email protected]
Subject: [PATCH net-next v4] udp:allow UDP cmsghdrs through io_uring
Date: Wed, 16 Dec 2020 18:03:12 +0000	[thread overview]
Message-ID: <[email protected]> (raw)

This patch adds PROTO_CMSG_DATA_ONLY to inet_dgram_ops and inet6_dgram_ops so that UDP_SEGMENT (GSO) and UDP_GRO can be used through io_uring.

GSO and GRO are vital to bring QUIC servers on par with TCP throughputs, and together offer a higher
throughput gain than io_uring alone (rate of data transit
considering), thus io_uring is presently the lesser performance choice.

RE http://vger.kernel.org/lpc_net2018_talks/willemdebruijn-lpc2018-udpgso-paper-DRAFT-1.pdf,
GSO is about +~63% and GRO +~82%.

this patch closes that loophole. 

net/ipv4/af_inet.c  | 1 +
net/ipv6/af_inet6.c | 1 +
net/socket.c        | 8 +++++---
3 files changed, 7 insertions(+), 3 deletions(-)



             reply	other threads:[~2020-12-16 18:04 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-16 18:03 Victor Stewart [this message]
2020-12-16 18:03 ` [PATCH net-next v4] udp:allow UDP cmsghdrs through io_uring Victor Stewart
2020-12-16 23:12   ` kernel test robot
2020-12-16 23:29     ` Victor Stewart
2020-12-17 15:50       ` Jens Axboe

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