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linux/net/sched
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Jesper Dangaard Brouer bf6dba76d2 net: sched: fallback to qdisc noqueue if default qdisc setup fail 
Currently if the default qdisc setup/init fails, the device ends up with
qdisc "noop", which causes all TX packets to get dropped.

With the introduction of sysctl net/core/default_qdisc it is possible
to change the default qdisc to be more advanced, which opens for the
possibility that Qdisc_ops->init() can fail.

This patch detect these kind of failures, and choose to fallback to
qdisc "noqueue", which is so simple that its init call will not fail.
This allows the interface to continue functioning.

V2:
As this also captures memory failures, which are transient, the
device is not kept in IFF_NO_QUEUE state.  This allows the net_device
to retry to default qdisc assignment.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-04 11:50:51 -07:00
..
act_api.c
netlink: remove type-unsafe validation_data pointer
2020-04-30 17:51:41 -07:00
act_bpf.c
bpf: Add socket assign support
2020-03-30 13:45:04 -07:00
act_connmark.c
net: sched: update action implementations to support flags
2019-10-30 18:07:51 -07:00
act_csum.c
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-11-26 15:42:43 -08:00
act_ct.c
net/sched: act_ct: update nf_conn_acct for act_ct SW offload in flowtable
2020-04-22 12:48:17 -07:00
act_ctinfo.c
net: sched: act_ctinfo: fix memory leak
2020-01-19 16:02:15 +01:00
act_gact.c
net: sched: update action implementations to support flags
2019-10-30 18:07:51 -07:00
act_gate.c
net: qos: introduce a gate control flow action
2020-05-01 16:08:19 -07:00
act_ife.c
net/sched: act_ife: initalize ife->metalist earlier
2020-01-17 10:58:15 +01:00
act_ipt.c
net: sched: update action implementations to support flags
2019-10-30 18:07:51 -07:00
act_meta_mark.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
act_meta_skbprio.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
act_meta_skbtcindex.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
act_mirred.c
net: Fix CONFIG_NET_CLS_ACT=n and CONFIG_NFT_FWD_NETDEV={y, m} build
2020-03-25 12:24:33 -07:00
act_mpls.c
net: Fixed updating of ethertype in skb_mpls_push()
2019-12-04 17:11:25 -08:00
act_nat.c
icmp: remove duplicate code
2019-11-05 14:03:11 -08:00
act_pedit.c
sched: act_pedit: Implement stats_update callback
2020-03-26 19:20:37 -07:00
act_police.c
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-11-26 15:42:43 -08:00
act_sample.c
net: sched: lock action when translating it to flow_action infra
2020-02-17 14:17:02 -08:00
act_simple.c
net_sched: extend packet counter to 64bit
2019-11-05 18:20:55 -08:00
act_skbedit.c
sched: act_skbedit: Implement stats_update callback
2020-03-26 19:20:37 -07:00
act_skbmod.c
net: sched: update action implementations to support flags
2019-10-30 18:07:51 -07:00
act_tunnel_key.c
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-11-26 15:42:43 -08:00
act_vlan.c
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-11-26 15:42:43 -08:00
cls_api.c
net: schedule: add action gate offloading
2020-05-01 16:08:19 -07:00
cls_basic.c
net_sched: fix ops->bind_class() implementations
2020-01-27 10:51:43 +01:00
cls_bpf.c
net_sched: fix ops->bind_class() implementations
2020-01-27 10:51:43 +01:00
cls_cgroup.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cls_flow.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cls_flower.c
net: sched: expose HW stats types per action used by drivers
2020-03-30 11:06:49 -07:00
cls_fw.c
net_sched: fix ops->bind_class() implementations
2020-01-27 10:51:43 +01:00
cls_matchall.c
net: sched: expose HW stats types per action used by drivers
2020-03-30 11:06:49 -07:00
cls_route.c
net_sched: cls_route: remove the right filter from hashtable
2020-03-16 01:59:32 -07:00
cls_rsvp6.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cls_rsvp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cls_rsvp.h
cls_rsvp: fix rsvp_policy
2020-02-01 12:25:06 -08:00
cls_tcindex.c
net_sched: fix a missing refcnt in tcindex_init()
2020-04-03 16:00:08 -07:00
cls_u32.c
net_sched: fix ops->bind_class() implementations
2020-01-27 10:51:43 +01:00
em_canid.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 11
2019-05-21 11:28:45 +02:00
em_cmp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
em_ipset.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
em_ipt.c
net: sched : Remove unnecessary cast in kfree
2020-04-23 15:50:50 -07:00
em_meta.c
net: annotate lockless accesses to sk->sk_max_ack_backlog
2019-11-06 16:14:48 -08:00
em_nbyte.c
net: sched: Replace zero-length array with flexible-array member
2020-02-29 21:27:02 -08:00
em_text.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
em_u32.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ematch.c
net_sched: ematch: reject invalid TCF_EM_SIMPLE
2020-01-27 10:55:26 +01:00
Kconfig
net: qos: introduce a gate control flow action
2020-05-01 16:08:19 -07:00
Makefile
net: qos: introduce a gate control flow action
2020-05-01 16:08:19 -07:00
sch_api.c
net_sched: do not reprogram a timer about to expire
2020-03-17 21:16:35 -07:00
sch_atm.c
net: sched: Replace zero-length array with flexible-array member
2020-02-29 21:27:02 -08:00
sch_blackhole.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sch_cake.c
net: sched: use skb_list_walk_safe helper for gso segments
2020-01-14 11:48:41 -08:00
sch_cbq.c
sch_cbq: validate TCA_CBQ_WRROPT to avoid crash
2019-09-30 11:07:46 -07:00
sch_cbs.c
net: cbs: Fix software cbs to consider packet sending time
2020-03-24 16:14:05 -07:00
sch_choke.c
sch_choke: Use kvcalloc
2020-01-29 11:58:10 +01:00
sch_codel.c
net: sched: Fix a possible null-pointer dereference in dequeue_func()
2019-07-29 09:46:58 -07:00
sch_drr.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
sch_dsmark.c
sch_dsmark: fix potential NULL deref in dsmark_init()
2019-10-04 18:28:30 -07:00
sch_etf.c
sched: etf: do not assume all sockets are full blown
2020-04-22 19:20:28 -07:00
sch_ets.c
net: sch_ets: Make the ETS qdisc offloadable
2019-12-18 13:32:29 -08:00
sch_fifo.c
net: sched: Make FIFO Qdisc offloadable
2020-03-05 14:03:31 -08:00
sch_fq_codel.c
fq_codel: do not include <linux/jhash.h>
2019-10-22 15:31:42 -07:00
sch_fq_pie.c
pie: remove pie_vars->accu_prob_overflows
2020-03-04 13:25:55 -08:00
sch_fq.c
net_sched: sch_fq: perform a prefetch() earlier
2020-05-03 15:50:45 -07:00
sch_generic.c
net: sched: fallback to qdisc noqueue if default qdisc setup fail
2020-05-04 11:50:51 -07:00
sch_gred.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sch_hfsc.c
netlink: make validation more configurable for future strictness
2019-04-27 17:07:21 -04:00
sch_hhf.c
net/flow_dissector: switch to siphash
2019-10-23 20:13:22 -07:00
sch_htb.c
net: sched: sch_htb: don't call qdisc_put() while holding tree lock
2019-09-27 12:13:55 +02:00
sch_ingress.c
net: sched: Pass ingress block to tcf_classify_ingress
2020-02-19 17:49:48 -08:00
sch_mq.c
net: sched: fix dump qlen for sch_mq/sch_mqprio with NOLOCK subqueues
2019-12-03 11:53:55 -08:00
sch_mqprio.c
mqprio: Fix out-of-bounds access in mqprio_dump
2019-12-06 11:58:45 -08:00
sch_multiq.c
net: sched: fix tc -s class show no bstats on class with nolock subqueues
2019-11-30 10:38:40 -08:00
sch_netem.c
net: sched: Replace zero-length array with flexible-array member
2020-02-29 21:27:02 -08:00
sch_pie.c
net: sched: pie: change tc_pie_xstats->prob
2020-03-09 18:05:55 -07:00
sch_plug.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sch_prio.c
net: sch_prio: When ungrafting, replace with FIFO
2020-01-08 12:45:53 -08:00
sch_qfq.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
sch_red.c
netlink: remove type-unsafe validation_data pointer
2020-04-30 17:51:41 -07:00
sch_sfb.c
net/flow_dissector: switch to siphash
2019-10-23 20:13:22 -07:00
sch_sfq.c
net/flow_dissector: switch to siphash
2019-10-23 20:13:22 -07:00
sch_skbprio.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
sch_taprio.c
taprio: Fix sending packets without dequeueing them
2020-03-12 11:25:08 -07:00
sch_tbf.c
net: sched: Make TBF Qdisc offloadable
2020-01-25 10:56:31 +01:00
sch_teql.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00