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952313bd62
linux/net/sched
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John Fastabend 952313bd62 net: sched: cls_cgroup use RCU 
Make cgroup classifier safe for RCU.

Also drops the calls in the classify routine that were doing a
rcu_read_lock()/rcu_read_unlock(). If the rcu_read_lock() isn't held
entering this routine we have issues with deleting the classifier
chain so remove the unnecessary rcu_read_lock()/rcu_read_unlock()
pair noting all paths AFAIK hold rcu_read_lock.

If there is a case where classify is called without the rcu read lock
then an rcu splat will occur and we can correct it.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-13 12:30:26 -04:00
..
act_api.c net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -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: use ktime_get_ns() and ktime_get_real_ns() helpers 2014-08-22 19:57:23 -07:00
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: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
cls_basic.c net: sched: cls_basic use RCU 2014-09-13 12:30:25 -04:00
cls_bpf.c net: filter: split 'struct sk_filter' into socket and bpf parts 2014-08-02 15:03:58 -07:00
cls_cgroup.c net: sched: cls_cgroup use RCU 2014-09-13 12:30:26 -04:00
cls_flow.c sched, cls: check if we could overwrite actions when changing a filter 2014-04-27 23:42:39 -04:00
cls_fw.c sched, cls: check if we could overwrite actions when changing a filter 2014-04-27 23:42:39 -04:00
cls_route.c sched, cls: check if we could overwrite actions when changing a filter 2014-04-27 23:42:39 -04:00
cls_rsvp6.c
cls_rsvp.c
cls_rsvp.h sched, cls: check if we could overwrite actions when changing a filter 2014-04-27 23:42:39 -04:00
cls_tcindex.c net_sched: remove exceptional & on function name 2014-07-24 23:23:32 -07:00
cls_u32.c net_sched: avoid generating same handle for u32 filters 2014-07-20 20:49:17 -07:00
em_canid.c net: em_canid: remove useless statements from em_canid_change 2014-06-21 15:40:22 -07:00
em_cmp.c
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
em_text.c
em_u32.c
ematch.c net: Convert net_ratelimit uses to net_<level>_ratelimited 2012-05-15 13:45:03 -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: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_atm.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_blackhole.c
sch_cbq.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_choke.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_codel.c fq_codel: should use qdisc backlog as threshold 2012-05-16 15:30:26 -04:00
sch_drr.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_dsmark.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_fifo.c pkt_sched: Stop using NLA_PUT*(). 2012-04-01 18:11:37 -04:00
sch_fq_codel.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_fq.c net: use ktime_get_ns() and ktime_get_real_ns() helpers 2014-08-22 19:57:23 -07:00
sch_generic.c net: qdisc: use rcu prefix and silence sparse warnings 2014-09-13 12:30:25 -04:00
sch_gred.c net_sched: replace pr_warning with pr_warn 2013-12-31 13:50:56 -05:00
sch_hfsc.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_hhf.c net: use the new API kvfree() 2014-06-05 00:49:51 -07:00
sch_htb.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_ingress.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_mq.c pkt_sched: give visibility to mq slave qdiscs 2013-12-09 19:54:47 -05:00
sch_mqprio.c net: qdisc: use rcu prefix and silence sparse warnings 2014-09-13 12:30:25 -04:00
sch_multiq.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_netem.c net: use the new API kvfree() 2014-06-05 00:49:51 -07:00
sch_pie.c net: sched: Cleanup PIE comments 2014-02-13 18:29:58 -05:00
sch_plug.c
sch_prio.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_qfq.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_red.c pkt_sched: Stop using NLA_PUT*(). 2012-04-01 18:11:37 -04:00
sch_sfb.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_sfq.c net: rcu-ify tcf_proto 2014-09-13 12:30:25 -04:00
sch_tbf.c net: use ktime_get_ns() and ktime_get_real_ns() helpers 2014-08-22 19:57:23 -07:00
sch_teql.c net: qdisc: use rcu prefix and silence sparse warnings 2014-09-13 12:30:25 -04:00