iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/net/sched
History
Eric Dumazet 55a93b3ea7 qdisc: validate skb without holding lock 
Validation of skb can be pretty expensive :

GSO segmentation and/or checksum computations.

We can do this without holding qdisc lock, so that other cpus
can queue additional packets.

Trick is that requeued packets were already validated, so we carry
a boolean so that sch_direct_xmit() can validate a fresh skb list,
or directly use an old one.

Tested on 40Gb NIC (8 TX queues) and 200 concurrent flows, 48 threads
host.

Turning TSO on or off had no effect on throughput, only few more cpu
cycles. Lock contention on qdisc lock disappeared.

Same if disabling TX checksum offload.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-03 15:36:11 -07:00
..
act_api.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
act_csum.c
net_sched: act: move tcf_hashinfo_init() into tcf_register_action()
2014-02-12 19:23:32 -05:00
act_gact.c
net_sched: act: move tcf_hashinfo_init() into tcf_register_action()
2014-02-12 19:23:32 -05:00
act_ipt.c
net_sched: act: move tcf_hashinfo_init() into tcf_register_action()
2014-02-12 19:23:32 -05:00
act_mirred.c
net_sched: hold tcf_lock in netdevice notifier
2014-07-20 20:31:42 -07:00
act_nat.c
net_sched: act: move tcf_hashinfo_init() into tcf_register_action()
2014-02-12 19:23:32 -05:00
act_pedit.c
net_sched: act: move tcf_hashinfo_init() into tcf_register_action()
2014-02-12 19:23:32 -05:00
act_police.c
net: sched: make bstats per cpu and estimator RCU safe
2014-09-30 01:02:26 -04:00
act_simple.c
net_sched: act: move tcf_hashinfo_init() into tcf_register_action()
2014-02-12 19:23:32 -05:00
act_skbedit.c
net_sched: act: move tcf_hashinfo_init() into tcf_register_action()
2014-02-12 19:23:32 -05:00
cls_api.c
net_sched: remove the first parameter from tcf_exts_destroy()
2014-09-28 17:29:01 -04:00
cls_basic.c
net_sched: remove the first parameter from tcf_exts_destroy()
2014-09-28 17:29:01 -04:00
cls_bpf.c
net_sched: remove the first parameter from tcf_exts_destroy()
2014-09-28 17:29:01 -04:00
cls_cgroup.c
net_sched: remove the first parameter from tcf_exts_destroy()
2014-09-28 17:29:01 -04:00
cls_flow.c
net_sched: remove the first parameter from tcf_exts_destroy()
2014-09-28 17:29:01 -04:00
cls_fw.c
net_sched: remove the first parameter from tcf_exts_destroy()
2014-09-28 17:29:01 -04:00
cls_route.c
net_sched: remove the first parameter from tcf_exts_destroy()
2014-09-28 17:29:01 -04:00
cls_rsvp6.c
…
cls_rsvp.c
…
cls_rsvp.h
net: sched: cls_rcvp, complete rcu conversion
2014-09-29 00:04:55 -04:00
cls_tcindex.c
net_sched: fix another crash in cls_tcindex
2014-10-01 22:00:42 -04:00
cls_u32.c
net_sched: avoid calling tcf_unbind_filter() in call_rcu callback
2014-10-01 22:00:42 -04:00
em_canid.c
net: em_canid: remove useless statements from em_canid_change
2014-06-21 15:40:22 -07:00
em_cmp.c
net_sched: cleanups
2011-01-19 23:31:12 -08:00
em_ipset.c
em_ipset: use dev_net() accessor
2013-10-18 16:23:06 -04:00
em_meta.c
net: Change skb_get_rxhash to skb_get_hash
2013-12-17 16:36:21 -05:00
em_nbyte.c
net_sched: cleanups
2011-01-19 23:31:12 -08:00
em_text.c
net_sched: cleanups
2011-01-19 23:31:12 -08:00
em_u32.c
net_sched: cleanups
2011-01-19 23:31:12 -08:00
ematch.c
ematch: Fix matching of inverted containers.
2014-09-29 15:31:29 -04:00
Kconfig
net: pkt_sched: PIE AQM scheme
2014-01-06 15:13:01 -05:00
Makefile
net: pkt_sched: PIE AQM scheme
2014-01-06 15:13:01 -05:00
sch_api.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_atm.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_blackhole.c
…
sch_cbq.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_choke.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_codel.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_drr.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_dsmark.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_fifo.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_fq_codel.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_fq.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_generic.c
qdisc: validate skb without holding lock
2014-10-03 15:36:11 -07:00
sch_gred.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_hfsc.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_hhf.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_htb.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_ingress.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_mq.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_mqprio.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_multiq.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_netem.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_pie.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_plug.c
net_sched: sch_plug: plug_qdisc_ops is static
2012-02-13 16:04:40 -05:00
sch_prio.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_qfq.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_red.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_sfb.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_sfq.c
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
sch_tbf.c
net: sched: implement qstat helper routines
2014-09-30 01:02:26 -04:00
sch_teql.c
net: qdisc: use rcu prefix and silence sparse warnings
2014-09-13 12:30:25 -04:00