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linux/net/sched
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Petr Machata 672d3ca2f3 net: sch_prio: When ungrafting, replace with FIFO 
[ Upstream commit 240ce7f642 ]

When a child Qdisc is removed from one of the PRIO Qdisc's bands, it is
replaced unconditionally by a NOOP qdisc. As a result, any traffic hitting
that band gets dropped. That is incorrect--no Qdisc was explicitly added
when PRIO was created, and after removal, none should have to be added
either.

Fix PRIO by first attempting to create a default Qdisc and only falling
back to noop when that fails. This pattern of attempting to create an
invisible FIFO, using NOOP only as a fallback, is also seen in other
Qdiscs.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Petr Machata <petrm@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>
2020-01-12 12:17:29 +01:00
..
act_api.c
net: avoid potential infinite loop in tc_ctl_action()
2019-10-29 09:19:39 +01:00
act_bpf.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_connmark.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_csum.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_gact.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_ife.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_ipt.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_meta_mark.c
net: remove duplicate includes
2017-12-13 13:18:46 -05:00
act_meta_skbprio.c
net sched actions: change IFE modules alias names
2017-10-12 22:13:20 -07:00
act_meta_skbtcindex.c
net: remove duplicate includes
2017-12-13 13:18:46 -05:00
act_mirred.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_nat.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_pedit.c
net/sched: act_pedit: fix WARN() in the traffic path
2019-12-01 09:16:06 +01:00
act_police.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_sample.c
net/sched: act_sample: don't push mac header on ip6gre ingress
2019-10-05 13:09:28 +02:00
act_simple.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_skbedit.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_skbmod.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
act_tunnel_key.c
net: sched: ensure opts_len <= IP_TUNNEL_OPTS_MAX in act_tunnel_key
2019-12-01 09:16:06 +01:00
act_vlan.c
net_sched: fix a NULL pointer deref in ipt action
2019-09-10 10:33:39 +01:00
cls_api.c
net: sched: fix possible crash in tcf_action_destroy()
2019-10-05 13:09:30 +02:00
cls_basic.c
sched: fix trailing whitespace
2018-07-24 14:10:42 -07:00
cls_bpf.c
cls_bpf: Use kmemdup instead of duplicating it in cls_bpf_prog_from_ops
2018-07-29 13:19:49 -07:00
cls_cgroup.c
net_sched: switch to rcu_work
2018-05-24 22:56:15 -04:00
cls_flow.c
net_sched: switch to rcu_work
2018-05-24 22:56:15 -04:00
cls_flower.c
net: sched: flower: insert new filter to idr after setting its mask
2019-03-19 13:12:41 +01:00
cls_fw.c
net_sched: switch to rcu_work
2018-05-24 22:56:15 -04:00
cls_matchall.c
net/sched: fix ->get helper of the matchall cls
2019-04-17 08:38:41 +02:00
cls_route.c
net_sched: switch to rcu_work
2018-05-24 22:56:15 -04:00
cls_rsvp6.c
[NET_SCHED]: Remove unnecessary includes
2007-07-10 22:16:41 -07:00
cls_rsvp.c
[NET_SCHED]: Remove unnecessary includes
2007-07-10 22:16:41 -07:00
cls_rsvp.h
net_sched: switch to rcu_work
2018-05-24 22:56:15 -04:00
cls_tcindex.c
net_sched: fix two more memory leaks in cls_tcindex
2019-02-27 10:08:59 +01:00
cls_u32.c
net: sched: cls_u32: fix hnode refcounting
2018-10-07 21:02:37 -07:00
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: move hook state into xt_action_param structure
2016-11-03 10:56:21 +01:00
em_ipt.c
net: sched: add em_ipt ematch for calling xtables matches
2018-02-21 13:15:33 -05:00
em_meta.c
net: convert sock.sk_refcnt from atomic_t to refcount_t
2017-07-01 07:39:08 -07:00
em_nbyte.c
net: sched: em_nbyte: don't add the data offset twice
2018-01-24 14:52:40 -05:00
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
net: sched: ematch: obtain net pointer from blocks
2017-10-16 21:00:40 +01:00
Kconfig
net/sched: add skbprio scheduler
2018-07-24 14:44:00 -07:00
Makefile
net/sched: add skbprio scheduler
2018-07-24 14:44:00 -07:00
sch_api.c
net_sched: add max len check for TCA_KIND
2019-10-05 13:09:28 +02:00
sch_atm.c
net: sch: api: add extack support in qdisc_create_dflt
2017-12-21 12:32:51 -05:00
sch_blackhole.c
net_sched: blackhole: tell upper qdisc about dropped packets
2018-06-17 08:42:33 +09:00
sch_cake.c
sch_cake: avoid possible divide by zero in cake_enqueue()
2020-01-12 12:17:26 +01:00
sch_cbq.c
sch_cbq: validate TCA_CBQ_WRROPT to avoid crash
2019-10-07 18:57:26 +02:00
sch_cbs.c
cbs: Add support for the graft function
2018-07-26 13:58:30 -07:00
sch_choke.c
net: sched: sch: add extack for change qdisc ops
2017-12-21 12:32:50 -05:00
sch_codel.c
net: sched: Fix a possible null-pointer dereference in dequeue_func()
2019-08-09 17:52:32 +02:00
sch_drr.c
net: sch: sch_drr: add extack support
2017-12-21 12:32:51 -05:00
sch_dsmark.c
sch_dsmark: fix potential NULL deref in dsmark_init()
2019-10-07 18:57:23 +02:00
sch_etf.c
net/sched: Make etf report drops on error_queue
2018-07-04 22:30:28 +09:00
sch_fifo.c
net: sch: api: add extack support in qdisc_create_dflt
2017-12-21 12:32:51 -05:00
sch_fq_codel.c
net_sched: unset TCQ_F_CAN_BYPASS when adding filters
2019-07-28 08:29:27 +02:00
sch_fq.c
pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM
2020-01-12 12:17:26 +01:00
sch_generic.c
net: sched: avoid writing on noop_qdisc
2019-11-24 08:21:02 +01:00
sch_gred.c
net: sched: gred: pass the right attribute to gred_change_table_def()
2018-11-04 14:50:51 +01:00
sch_hfsc.c
net_sched: remove a bogus warning in hfsc
2018-06-23 10:58:46 +09:00
sch_hhf.c
net/flow_dissector: switch to siphash
2019-11-10 11:27:54 +01:00
sch_htb.c
net_sched: remove unused htb drop_list
2018-06-24 16:42:46 +09:00
sch_ingress.c
net: sched: allow ingress and clsact qdiscs to share filter blocks
2018-01-17 14:53:57 -05:00
sch_mq.c
net: sched: fix dump qlen for sch_mq/sch_mqprio with NOLOCK subqueues
2019-12-21 10:57:12 +01:00
sch_mqprio.c
net: sched: fix dump qlen for sch_mq/sch_mqprio with NOLOCK subqueues
2019-12-21 10:57:12 +01:00
sch_multiq.c
net: sched: fix tc -s class show no bstats on class with nolock subqueues
2019-12-05 09:21:32 +01:00
sch_netem.c
sch_netem: fix rcu splat in netem_enqueue()
2019-11-06 13:06:27 +01:00
sch_pie.c
net: sched: sch: add extack for change qdisc ops
2017-12-21 12:32:50 -05:00
sch_plug.c
net: sched: sch: add extack for change qdisc ops
2017-12-21 12:32:50 -05:00
sch_prio.c
net: sch_prio: When ungrafting, replace with FIFO
2020-01-12 12:17:29 +01:00
sch_qfq.c
net: sch: api: add extack support in qdisc_create_dflt
2017-12-21 12:32:51 -05:00
sch_red.c
net: sched: red: avoid hashing NULL child
2018-05-18 13:52:32 -04:00
sch_sfb.c
net/flow_dissector: switch to siphash
2019-11-10 11:27:54 +01:00
sch_sfq.c
net/flow_dissector: switch to siphash
2019-11-10 11:27:54 +01:00
sch_skbprio.c
net/sched: add skbprio scheduler
2018-07-24 14:44:00 -07:00
sch_tbf.c
net: sched: red: avoid hashing NULL child
2018-05-18 13:52:32 -04:00
sch_teql.c
net: sched: sch: add extack for init callback
2017-12-21 12:32:50 -05:00