netdev - [PATCH net-next 0/2] Support reading msg errq from io

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Message-Id: <20200820234954.1784522-1-luke.w.hsiao@gmail.com>
Date:   Thu, 20 Aug 2020 16:49:52 -0700
From:   Luke Hsiao <luke.w.hsiao@...il.com>
To:     David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Jens Axboe <axboe@...nel.dk>,
        Luke Hsiao <lukehsiao@...gle.com>
Subject: [PATCH net-next 0/2] Support reading msg errq from io_uring

From: Luke Hsiao <lukehsiao@...gle.com>

This patch series adds support for reading MSG_ERRQUEUE using the
io_uring interface. Support for this operation allows io_uring to serve
as an alternative to epoll + recvmsg for reading notification
completions for TCP tx zerocopy. 

The first patch allows ancillary data to be read using recvmsg from
io_uring, while the second patch provides an optimization for reading
these notification completions.

Luke Hsiao (2):
  io_uring: allow tcp ancillary data for __sys_recvmsg_sock()
  io_uring: ignore POLLIN for recvmsg on MSG_ERRQUEUE

 fs/io_uring.c       | 11 +++++++++--
 include/linux/net.h |  3 +++
 net/ipv4/af_inet.c  |  1 +
 net/ipv6/af_inet6.c |  1 +
 net/socket.c        |  8 +++++---
 5 files changed, 19 insertions(+), 5 deletions(-)

-- 
2.28.0.297.g1956fa8f8d-goog