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linux/net/sched
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Yotam Gigi 6c8556f6e1 net/sched: matchall: Fix configuration race 
[ Upstream commit fd62d9f5c5 ]

In the current version, the matchall internal state is split into two
structs: cls_matchall_head and cls_matchall_filter. This makes little
sense, as matchall instance supports only one filter, and there is no
situation where one exists and the other does not. In addition, that led
to some races when filter was deleted while packet was processed.

Unify that two structs into one, thus simplifying the process of matchall
creation and deletion. As a result, the new, delete and get callbacks have
a dummy implementation where all the work is done in destroy and change
callbacks, as was done in cls_cgroup.

Fixes: bf3994d2ed ("net/sched: introduce Match-all classifier")
Reported-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Yotam Gigi <yotamg@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-02-18 15:11:41 +01:00
..
act_api.c net sched actions: fix refcnt when GETing of action after bind 2017-02-04 09:47:09 +01:00
act_bpf.c bpf: use skb_at_tc_ingress helper in tcf_bpf 2016-09-15 19:29:47 -04:00
act_connmark.c net_sched: move tc_action into tcf_common 2016-07-25 21:49:19 -07:00
act_csum.c net sched: stylistic cleanups 2016-09-19 22:04:14 -04:00
act_gact.c net sched: stylistic cleanups 2016-09-19 22:04:14 -04:00
act_ife.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-10-02 22:20:41 -04:00
act_ipt.c net_sched: move tc_action into tcf_common 2016-07-25 21:49:19 -07:00
act_meta_mark.c Support to encoding decoding skb mark on IFE action 2016-03-01 17:15:23 -05:00
act_meta_skbprio.c Support to encoding decoding skb prio on IFE action 2016-03-01 17:15:23 -05:00
act_meta_skbtcindex.c net sched ife action: Introduce skb tcindex metadata encap decap 2016-09-19 21:55:28 -04:00
act_mirred.c net/sched: act_mirred: Use passed lastuse argument 2016-10-20 11:14:24 -04:00
act_nat.c net_sched: move tc_action into tcf_common 2016-07-25 21:49:19 -07:00
act_pedit.c net/sched: pedit: make sure that offset is valid 2016-11-29 19:46:00 -05:00
act_police.c net sched: stylistic cleanups 2016-09-19 22:04:14 -04:00
act_simple.c net_sched: move tc_action into tcf_common 2016-07-25 21:49:19 -07:00
act_skbedit.c net_sched: move tc_action into tcf_common 2016-07-25 21:49:19 -07:00
act_skbmod.c net_sched: Introduce skbmod action 2016-09-15 19:33:47 -04:00
act_tunnel_key.c net/sched: act_tunnel_key: Remove rcu_read_lock protection 2016-09-15 19:18:18 -04:00
act_vlan.c net/sched: act_vlan: Push skb->data to mac_header prior calling skb_vlan_*() functions 2016-10-03 21:40:50 -04:00
cls_api.c net, sched: fix soft lockup in tc_classify 2017-01-15 13:42:53 +01:00
cls_basic.c net, sched: respect rcu grace period on cls destruction 2016-11-28 10:47:35 -05:00
cls_bpf.c net, sched: respect rcu grace period on cls destruction 2016-11-28 10:47:35 -05:00
cls_cgroup.c net, sched: respect rcu grace period on cls destruction 2016-11-28 10:47:35 -05:00
cls_flow.c net, sched: respect rcu grace period on cls destruction 2016-11-28 10:47:35 -05:00
cls_flower.c net/sched: cls_flower: Fix missing addr_type in classify 2017-01-15 13:42:53 +01:00
cls_fw.c net sched: stylistic cleanups 2016-09-19 22:04:14 -04:00
cls_matchall.c net/sched: matchall: Fix configuration race 2017-02-18 15:11:41 +01:00
cls_route.c net_sched: check NULL on error path in route4_change() 2016-09-23 06:51:49 -04:00
cls_rsvp.c [NET_SCHED]: Remove unnecessary includes 2007-07-10 22:16:41 -07:00
cls_rsvp.h net, sched: respect rcu grace period on cls destruction 2016-11-28 10:47:35 -05:00
cls_rsvp6.c [NET_SCHED]: Remove unnecessary includes 2007-07-10 22:16:41 -07:00
cls_tcindex.c net, sched: respect rcu grace period on cls destruction 2016-11-28 10:47:35 -05:00
cls_u32.c net sched: stylistic cleanups 2016-09-19 22:04:14 -04:00
em_canid.c net: sched: remove tcf_proto from ematch calls 2014-10-06 18:02:32 -04:00
em_cmp.c net_sched: cleanups 2011-01-19 23:31:12 -08:00
em_ipset.c netfilter: x_tables: Pass struct net in xt_action_param 2015-09-18 21:58:14 +02:00
em_meta.c qdisc: constify meta_type_ops structures 2016-04-14 00:35:30 -04:00
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 net_sched: cleanups 2011-01-19 23:31:12 -08:00
ematch.c ematch: Fix auto-loading of ematch modules. 2015-02-20 15:30:56 -05:00
Kconfig net sched ife action: Introduce skb tcindex metadata encap decap 2016-09-19 21:55:28 -04:00
Makefile net sched ife action: Introduce skb tcindex metadata encap decap 2016-09-19 21:55:28 -04:00
sch_api.c net sched: stylistic cleanups 2016-09-19 22:04:14 -04:00
sch_atm.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_blackhole.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_cbq.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_choke.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_codel.c sched: replace __skb_dequeue with __qdisc_dequeue_head 2016-09-19 01:47:18 -04:00
sch_drr.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_dsmark.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_fifo.c sched: don't use skb queue helpers 2016-09-19 01:47:18 -04:00
sch_fq.c net_sched: sch_fq: account for schedule/timers drifts 2016-09-23 07:19:06 -04:00
sch_fq_codel.c net_sched: fq_codel: cache skb->truesize into skb->cb 2016-06-25 12:19:35 -04:00
sch_generic.c sched: add and use qdisc_skb_head helpers 2016-09-19 01:47:18 -04:00
sch_gred.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_hfsc.c net/sched/sch_hfsc.c: remove unused cl_myfadj 2016-08-08 16:06:47 -07:00
sch_hhf.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_htb.c sched: add and use qdisc_skb_head helpers 2016-09-19 01:47:18 -04:00
sch_ingress.c net: sched: fix tc_should_offload for specific clsact classes 2016-06-07 16:59:53 -07:00
sch_mq.c net: sched: convert qdisc linked list to hashtable 2016-08-10 17:19:02 -07:00
sch_mqprio.c net: sched: convert qdisc linked list to hashtable 2016-08-10 17:19:02 -07:00
sch_multiq.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_netem.c sched: add and use qdisc_skb_head helpers 2016-09-19 01:47:18 -04:00
sch_pie.c sched: replace __skb_dequeue with __qdisc_dequeue_head 2016-09-19 01:47:18 -04:00
sch_plug.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_prio.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-06-30 05:03:36 -04:00
sch_qfq.c sch_qfq: keep backlog updated with qlen 2016-09-23 06:52:31 -04:00
sch_red.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_sfb.c sch_sfb: keep backlog updated with qlen 2016-09-23 06:52:31 -04:00
sch_sfq.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_tbf.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00
sch_teql.c net_sched: drop packets after root qdisc lock is released 2016-06-25 12:19:35 -04:00