Alexei Starovoitov cff82457c5 net_sched: act_bpf: remove spinlock in fast path ... Similar to act_gact/act_mirred, act_bpf can be lockless in packet processing with extra care taken to free bpf programs after rcu grace period. Replacement of existing act_bpf (very rare) is done with synchronize_rcu() and final destruction is done from tc_action_ops->cleanup() callback that is called from tcf_exts_destroy()->tcf_action_destroy()->__tcf_hash_release() when bind and refcnt reach zero which is only possible when classifier is destroyed. Previous two patches fixed the last two classifiers (tcindex and rsvp) to call tcf_exts_destroy() from rcu callback. Similar to gact/mirred there is a race between prog->filter and prog->tcf_action. Meaning that the program being replaced may use previous default action if it happened to return TC_ACT_UNSPEC. act_mirred race betwen tcf_action and tcfm_dev is similar. In all cases the race is harmless. Long term we may want to improve the situation by replacing the whole tc_action->priv as single pointer instead of updating inner fields one by one. Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-08-26 11:01:45 -07:00
..
act_api.c	net_sched: make tcf_hash_destroy() static	2015-08-26 11:01:44 -07:00
act_bpf.c	net_sched: act_bpf: remove spinlock in fast path	2015-08-26 11:01:45 -07:00
act_connmark.c	netfilter: nf_conntrack: add direction support for zones	2015-08-18 01:22:50 +02:00
act_csum.c	net: sched: add percpu stats to actions	2015-07-08 13:50:41 -07:00
act_gact.c	net_sched: act_gact: remove spinlock in fast path	2015-07-08 13:50:42 -07:00
act_ipt.c	net: sched: add percpu stats to actions	2015-07-08 13:50:41 -07:00
act_mirred.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-08-13 16:23:11 -07:00
act_nat.c	net: Change pseudohdr argument of inet_proto_csum_replace* to be a bool	2015-08-17 21:33:06 -07:00
act_pedit.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-07-31 23:52:20 -07:00
act_police.c	sched: fix act file names in header comment	2014-11-06 15:04:41 -05:00
act_simple.c	net: sched: add percpu stats to actions	2015-07-08 13:50:41 -07:00
act_skbedit.c	net: sched: add percpu stats to actions	2015-07-08 13:50:41 -07:00
act_vlan.c	net: sched: add percpu stats to actions	2015-07-08 13:50:41 -07:00
cls_api.c	net: sched: fix call_rcu() race on classifier module unloads	2015-05-21 18:48:18 -04:00
cls_basic.c	net_sched: destroy proto tp when all filters are gone	2015-03-09 15:35:55 -04:00
cls_bpf.c	sched: cls_bpf: fix panic on filter replace	2015-07-21 00:25:02 -07:00
cls_cgroup.c	cls_cgroup: factor out classid retrieval	2015-07-20 12:41:30 -07:00
cls_flow.c	sched: cls_flow: fix panic on filter replace	2015-07-21 00:25:03 -07:00
cls_flower.c	sched: cls_flower: fix panic on filter replace	2015-07-21 00:25:03 -07:00
cls_fw.c	net_sched: destroy proto tp when all filters are gone	2015-03-09 15:35:55 -04:00
cls_route.c	net_sched: destroy proto tp when all filters are gone	2015-03-09 15:35:55 -04:00
cls_rsvp6.c
cls_rsvp.c
cls_rsvp.h	net_sched: convert rsvp to call tcf_exts_destroy from rcu callback	2015-08-26 11:01:45 -07:00
cls_tcindex.c	net_sched: convert tcindex to call tcf_exts_destroy from rcu callback	2015-08-26 11:01:44 -07:00
cls_u32.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-03-20 18:51:09 -04:00
em_canid.c	net: sched: remove tcf_proto from ematch calls	2014-10-06 18:02:32 -04:00
em_cmp.c
em_ipset.c	net: sched: Simplify em_ipset_match	2015-06-18 21:14:28 +02:00
em_meta.c	net: rename vlan_tx_* helpers since "tx" is misleading there	2015-01-13 17:51:08 -05:00
em_nbyte.c	net: sched: remove tcf_proto from ematch calls	2014-10-06 18:02:32 -04:00
em_text.c	net: Remove state argument from skb_find_text()	2015-02-22 15:59:54 -05:00
em_u32.c
ematch.c	ematch: Fix auto-loading of ematch modules.	2015-02-20 15:30:56 -05:00
Kconfig	net: add CONFIG_NET_INGRESS to enable ingress filtering	2015-05-14 01:10:05 -04:00
Makefile	tc: introduce Flower classifier	2015-05-13 15:19:48 -04:00
sch_api.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2015-06-24 16:49:49 -07:00
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	sch_choke: drop all packets in queue during reset	2015-07-24 22:57:15 -07:00
sch_codel.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-05-13 14:31:43 -04:00
sch_drr.c	net: sched: enable per cpu qstats	2014-09-30 01:02:26 -04:00
sch_dsmark.c	net: sched: fix skb->protocol use in case of accelerated vlan path	2015-01-13 17:51:08 -05:00
sch_fifo.c	net: sched: drop all special handling of tx_queue_len == 0	2015-08-18 11:55:08 -07:00
sch_fq_codel.c	fq_codel: explicitly reset flows in ->reset()	2015-08-02 17:20:01 -07:00
sch_fq.c	pkt_sched: fq: correct spelling of locally	2015-04-01 22:52:29 -04:00
sch_generic.c	net: sch_generic: react upon IFF_NO_QUEUE flag	2015-08-17 11:50:18 -07:00
sch_gred.c	net: sched: drop all special handling of tx_queue_len == 0	2015-08-18 11:55:08 -07:00
sch_hfsc.c	net: sched: enable per cpu qstats	2014-09-30 01:02:26 -04:00
sch_hhf.c	sched: Call skb_get_hash_perturb in sch_hhf	2015-05-04 00:09:08 -04:00
sch_htb.c	net: sched: drop all special handling of tx_queue_len == 0	2015-08-18 11:55:08 -07:00
sch_ingress.c	net: sched: further simplify handle_ing	2015-05-11 11:10:35 -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: deprecate enqueue_root()	2015-05-11 14:17:32 -04:00
sch_pie.c	sch_pie: schedule the timer after all init succeed	2014-10-29 14:28:01 -04:00
sch_plug.c	net: sched: drop all special handling of tx_queue_len == 0	2015-08-18 11:55:08 -07:00
sch_prio.c	net: sched: enable per cpu qstats	2014-09-30 01:02:26 -04:00
sch_qfq.c	pkt_sched: sch_qfq: remove unused member of struct qfq_sched	2015-07-15 17:21:31 -07:00
sch_red.c	net: sched: implement qstat helper routines	2014-09-30 01:02:26 -04:00
sch_sfb.c	net: sched: drop all special handling of tx_queue_len == 0	2015-08-18 11:55:08 -07:00
sch_sfq.c	net_sched: fix a use-after-free in sfq	2015-07-15 21:36:34 -07:00
sch_tbf.c	net: sched: avoid costly atomic operation in fq_dequeue()	2014-10-06 00:55:10 -04:00
sch_teql.c	net: sched: fix skb->protocol use in case of accelerated vlan path	2015-01-13 17:51:08 -05:00