netdev - [PATCH net-next 0/3] net: optmem

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Message-ID: <20231214104901.1318423-1-edumazet@google.com>
Date: Thu, 14 Dec 2023 10:48:58 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: Neal Cardwell <ncardwell@...gle.com>, Willem de Bruijn <willemb@...gle.com>, 
	Mina Almasry <almasrymina@...gle.com>, Chao Wu <wwchao@...gle.com>, 
	Pavel Begunkov <asml.silence@...il.com>, netdev@...r.kernel.org, eric.dumazet@...il.com, 
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 0/3] net: optmem_max changes

optmem_max default value is too small for tx zerocopy workloads.

First patch increases default from 20KB to 128 KB,
which is the value we have used for seven years.

Second patch makes optmem_max sysctl per netns.

Last patch tweaks two tests accordingly.

Eric Dumazet (3):
  net: increase optmem_max default value
  net: Namespace-ify sysctl_optmem_max
  selftests/net: optmem_max became per netns

 Documentation/admin-guide/sysctl/net.rst          |  5 ++++-
 include/net/netns/core.h                          |  1 +
 include/net/sock.h                                |  1 -
 net/core/bpf_sk_storage.c                         |  3 ++-
 net/core/filter.c                                 | 12 +++++++-----
 net/core/net_namespace.c                          |  4 ++++
 net/core/sock.c                                   |  8 ++------
 net/core/sysctl_net_core.c                        | 15 ++++++++-------
 net/ipv4/ip_sockglue.c                            |  6 +++---
 net/ipv6/ipv6_sockglue.c                          |  4 ++--
 .../testing/selftests/net/io_uring_zerocopy_tx.sh |  9 ++++-----
 tools/testing/selftests/net/msg_zerocopy.sh       |  9 ++++-----
 12 files changed, 41 insertions(+), 36 deletions(-)

-- 
2.43.0.472.g3155946c3a-goog