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Jakub Kicinski aa90302e31 net: sched: update default qdisc visibility after Tx queue cnt changes 
[ Upstream commit 1e080f1775 ]

mq / mqprio make the default child qdiscs visible. They only do
so for the qdiscs which are within real_num_tx_queues when the
device is registered. Depending on order of calls in the driver,
or if user space changes config via ethtool -L the number of
qdiscs visible under tc qdisc show will differ from the number
of queues. This is confusing to users and potentially to system
configuration scripts which try to make sure qdiscs have the
right parameters.

Add a new Qdisc_ops callback and make relevant qdiscs TTRT.

Note that this uncovers the "shortcut" created by
commit 1f27cde313 ("net: sched: use pfifo_fast for non real queues")
The default child qdiscs beyond initial real_num_tx are always
pfifo_fast, no matter what the sysfs setting is. Fixing this
gets a little tricky because we'd need to keep a reference
on whatever the default qdisc was at the time of creation.
In practice this is likely an non-issue the qdiscs likely have
to be configured to non-default settings, so whatever user space
is doing such configuration can replace the pfifos... now that
it will see them.

Reported-by: Matthew Massey <matthewmassey@fb.com>
Reviewed-by: Dave Taht <dave.taht@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-11-26 11:36:04 +01:00
..
act_api.c net: sched: bump refcount for new action in ACT replace mode 2021-04-14 08:22:36 +02:00
act_bpf.c net_sched: fix a NULL pointer deref in ipt action 2019-09-10 10:33:39 +01:00
act_connmark.c sched: consistently handle layer3 header accesses in the presence of VLANs 2020-07-22 09:32:00 +02:00
act_csum.c sched: consistently handle layer3 header accesses in the presence of VLANs 2020-07-22 09:32:00 +02:00
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
act_meta_skbprio.c
act_meta_skbtcindex.c
act_mirred.c act_mirred: Fix mirred_init_module error handling 2020-01-27 14:51:18 +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 sched: consistently handle layer3 header accesses in the presence of VLANs 2020-07-22 09:32:00 +02:00
act_skbmod.c net/sched: act_skbmod: Skip non-Ethernet packets 2021-07-28 11:13:48 +02:00
act_tunnel_key.c net/sched: act_tunnel_key: fix OOB write in case of IPv6 ERSPAN tunnels 2020-10-29 09:54:58 +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: cls_api: Fix the the wrong parameter 2021-07-28 11:13:49 +02:00
cls_basic.c net_sched: fix ops->bind_class() implementations 2020-02-01 09:37:06 +00:00
cls_bpf.c net_sched: fix ops->bind_class() implementations 2020-02-01 09:37:06 +00:00
cls_cgroup.c
cls_flow.c sched: consistently handle layer3 header accesses in the presence of VLANs 2020-07-22 09:32:00 +02:00
cls_flower.c sched: consistently handle layer3 header accesses in the presence of VLANs 2020-07-22 09:32:00 +02:00
cls_fw.c net_sched: fix ops->bind_class() implementations 2020-02-01 09:37:06 +00:00
cls_matchall.c net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS 2020-02-24 08:34:34 +01:00
cls_route.c net_sched: cls_route: remove the right filter from hashtable 2020-04-02 15:28:11 +02:00
cls_rsvp.c
cls_rsvp.h cls_rsvp: fix rsvp_policy 2020-02-11 04:33:52 -08:00
cls_rsvp6.c
cls_tcindex.c net: sched: fix warning in tcindex_alloc_perfect_hash 2021-07-20 16:15:53 +02:00
cls_u32.c net_sched: fix ops->bind_class() implementations 2020-02-01 09:37:06 +00:00
em_canid.c
em_cmp.c
em_ipset.c sched: consistently handle layer3 header accesses in the presence of VLANs 2020-07-22 09:32:00 +02:00
em_ipt.c
em_meta.c sched: consistently handle layer3 header accesses in the presence of VLANs 2020-07-22 09:32:00 +02:00
em_nbyte.c
em_text.c
em_u32.c
ematch.c net_sched: ematch: reject invalid TCF_EM_SIMPLE 2020-02-01 09:37:05 +00:00
Kconfig
Makefile
sch_api.c net: prevent user from passing illegal stab size 2021-10-17 10:19:49 +02:00
sch_atm.c net_sched: fix a memory leak in atm_tc_init() 2020-07-22 09:31:59 +02:00
sch_blackhole.c
sch_cake.c sch_cake: Fix out of bounds when parsing TCP options and header 2021-06-30 08:48:17 -04:00
sch_cbq.c net: sched: Fix qdisc_rate_table refcount leak when get tcf_block failed 2021-09-22 11:47:55 +02:00
sch_cbs.c net: cbs: Fix software cbs to consider packet sending time 2020-04-02 15:28:11 +02:00
sch_choke.c net: sched: validate stab values 2021-03-30 14:37:03 +02:00
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
sch_dsmark.c sch_dsmark: fix a NULL deref in qdisc_reset() 2021-06-03 08:38:12 +02:00
sch_etf.c sched: etf: do not assume all sockets are full blown 2020-04-29 16:31:21 +02:00
sch_fifo.c net_sched: fix NULL deref in fifo_set_limit() 2021-10-13 10:10:51 +02:00
sch_fq.c net: fq: add missing attribute validation for orphan mask 2020-03-18 07:14:16 +01:00
sch_fq_codel.c fq_codel: reject silly quantum parameters 2021-09-22 11:48:14 +02:00
sch_generic.c net: sched: update default qdisc visibility after Tx queue cnt changes 2021-11-26 11:36:04 +01:00
sch_gred.c net: sched: validate stab values 2021-03-30 14:37:03 +02:00
sch_hfsc.c
sch_hhf.c net/flow_dissector: switch to siphash 2019-11-10 11:27:54 +01:00
sch_htb.c
sch_ingress.c
sch_mq.c net: sched: update default qdisc visibility after Tx queue cnt changes 2021-11-26 11:36:04 +01:00
sch_mqprio.c net: sched: update default qdisc visibility after Tx queue cnt changes 2021-11-26 11:36:04 +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 netem: fix zero division in tabledist 2020-11-05 11:08:33 +01:00
sch_pie.c
sch_plug.c
sch_prio.c net: sch_prio: When ungrafting, replace with FIFO 2020-01-12 12:17:29 +01:00
sch_qfq.c pkt_sched: sch_qfq: fix qfq_change_class() error path 2021-07-20 16:15:51 +02:00
sch_red.c net: sched: validate stab values 2021-03-30 14:37:03 +02:00
sch_sfb.c net/flow_dissector: switch to siphash 2019-11-10 11:27:54 +01:00
sch_sfq.c net: sched: validate stab values 2021-03-30 14:37:03 +02:00
sch_skbprio.c net_sched: sch_skbprio: add message validation to skbprio_change() 2020-05-14 07:57:17 +02:00
sch_tbf.c
sch_teql.c net: sched: sch_teql: fix null-pointer dereference 2021-04-14 08:22:33 +02:00