netdev - [PATCH v3 net-next 0/7] net_sched: act: lockless operation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Mon,  6 Jul 2015 05:18:02 -0700
From:	Eric Dumazet <edumazet@...gle.com>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>,
	Alexei Starovoitov <ast@...mgrid.com>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	John Fastabend <john.fastabend@...il.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Eric Dumazet <edumazet@...il.com>
Subject: [PATCH v3 net-next 0/7] net_sched: act: lockless operation

As mentioned by Alexei last week in Budapest, it is a bit weird
to take a spinlock in order to drop a packet in a tc filter...

Lets add percpu infra for tc actions and use it for gact & mirred.

Before changes, my host with 8 RX queues was handling 5 Mpps with gact,
and more than 11 Mpps after.

Mirred change is not yet visible if ifb+qdisc is used, as ifb is
not yet multi queue enabled, but is a step forward.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Cc: Alexei Starovoitov <ast@...mgrid.com>
Cc: Jamal Hadi Salim <jhs@...atatu.com>
Cc: John Fastabend <john.fastabend@...il.com>

Eric Dumazet (7):
  net: sched: extend percpu stats helpers
  net: sched: add percpu stats to actions
  net_sched: act_gact: make tcfg_pval non zero
  net_sched: act_gact: use a separate packet counters for gact_determ()
  net_sched: act_gact: read tcfg_ptype once
  net_sched: act_gact: remove spinlock in fast path
  net_sched: act_mirred: remove spinlock in fast path

 include/net/act_api.h          | 15 ++++++++++-
 include/net/sch_generic.h      | 31 ++++++++++++++--------
 include/net/tc_act/tc_gact.h   |  7 ++---
 include/net/tc_act/tc_mirred.h |  2 +-
 net/core/dev.c                 |  4 +--
 net/sched/act_api.c            | 44 ++++++++++++++++++++++++--------
 net/sched/act_bpf.c            |  2 +-
 net/sched/act_connmark.c       |  3 ++-
 net/sched/act_csum.c           |  3 ++-
 net/sched/act_gact.c           | 44 ++++++++++++++++++--------------
 net/sched/act_ipt.c            |  2 +-
 net/sched/act_mirred.c         | 58 ++++++++++++++++++++++--------------------
 net/sched/act_nat.c            |  3 ++-
 net/sched/act_pedit.c          |  3 ++-
 net/sched/act_simple.c         |  3 ++-
 net/sched/act_skbedit.c        |  3 ++-
 net/sched/act_vlan.c           |  3 ++-
 17 files changed, 148 insertions(+), 82 deletions(-)

-- 
2.4.3.573.g4eafbef

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html