From: Xin Long <lucien.xin@gmail.com>
To: network dev <netdev@vger.kernel.org>, linux-sctp@vger.kernel.org
Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>,
Neil Horman <nhorman@tuxdriver.com>,
davem@davemloft.net, Matteo Croce <mcroce@redhat.com>,
Vladis Dronov <vdronov@redhat.com>
Subject: [PATCH net-next 0/2] sctp: fully support memory accounting
Date: Sun, 31 Mar 2019 16:53:45 +0800 [thread overview]
Message-ID: <cover.1554022192.git.lucien.xin@gmail.com> (raw)
sctp memory accounting is added in this patchset by using
these kernel APIs on send side:
- sk_mem_charge()
- sk_mem_uncharge()
- sk_wmem_schedule()
- sk_under_memory_pressure()
- sk_mem_reclaim()
and these on receive side:
- sk_mem_charge()
- sk_mem_uncharge()
- sk_rmem_schedule()
- sk_under_memory_pressure()
- sk_mem_reclaim()
With sctp memory accounting, we can limit the memory allocation by
either sysctl:
# sysctl -w net.sctp.sctp_mem="10 20 50"
or cgroup:
# echo $((8<<14)) > \
/sys/fs/cgroup/memory/sctp_mem/memory.kmem.tcp.limit_in_bytes
When the socket is under memory pressure, the send side will block
and wait, while the receive side will renege or drop.
Xin Long (2):
sctp: implement memory accounting on tx path
sctp: implement memory accounting on rx path
include/net/sctp/sctp.h | 2 +-
net/sctp/sm_statefuns.c | 6 ++++--
net/sctp/socket.c | 10 ++++++++--
net/sctp/ulpevent.c | 19 ++++++++-----------
net/sctp/ulpqueue.c | 3 ++-
5 files changed, 23 insertions(+), 17 deletions(-)
--
2.1.0
next reply other threads:[~2019-03-31 8:53 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-31 8:53 Xin Long [this message]
2019-03-31 8:53 ` [PATCH net-next 1/2] sctp: implement memory accounting on tx path Xin Long
2019-03-31 8:53 ` [PATCH net-next 2/2] sctp: implement memory accounting on rx path Xin Long
2019-04-02 11:48 ` Marcelo Ricardo Leitner
2019-04-02 11:48 ` [PATCH net-next 1/2] sctp: implement memory accounting on tx path Marcelo Ricardo Leitner
2019-03-31 8:56 ` [PATCH net-next 0/2] sctp: fully support memory accounting Xin Long
2019-03-31 18:02 ` David Miller
2019-04-04 9:45 ` Xin Long
2019-04-04 17:38 ` David Miller
2019-04-05 4:49 ` Xin Long
2019-03-31 19:22 ` Matteo Croce
2019-03-31 20:10 ` Marcelo Ricardo Leitner
2019-03-31 21:04 ` David Miller
2019-04-01 7:25 ` Xin Long
2019-04-01 11:31 ` Neil Horman
2019-04-02 3:36 ` Marcelo Ricardo Leitner
2019-04-02 11:41 ` Neil Horman
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