netdev - [net-next v2 0/2] tcp: add CMSG+rx timestamps to rx. zerocopy

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Date:   Wed, 20 Jan 2021 16:41:46 -0800
From:   Arjun Roy <arjunroy.kdev@...il.com>
To:     davem@...emloft.net, netdev@...r.kernel.org
Cc:     arjunroy@...gle.com, edumazet@...gle.com, soheil@...gle.com,
        kuba@...nel.org
Subject: [net-next v2 0/2] tcp: add CMSG+rx timestamps to rx. zerocopy

From: Arjun Roy <arjunroy@...gle.com>

Provide CMSG and receive timestamp support to TCP
receive zerocopy. Patch 1 refactors CMSG pending state for
tcp_recvmsg() to avoid the use of magic numbers; patch 2 implements
receive timestamp via CMSG support for receive zerocopy, and uses the
constants added in patch 1.

v2: Fixes various stylistic comments and introduces a helper method
to reduce indentation.

Arjun Roy (2):
  tcp: Remove CMSG magic numbers for tcp_recvmsg().
  tcp: Add receive timestamp support for receive zerocopy.

 include/uapi/linux/tcp.h |   4 ++
 net/ipv4/tcp.c           | 130 ++++++++++++++++++++++++++++-----------
 2 files changed, 98 insertions(+), 36 deletions(-)

-- 
2.30.0.284.gd98b1dd5eaa7-goog