linux/net
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
..
6lowpan
9p 9pnet: allow making incomplete read requests 2020-03-27 09:29:56 +00:00
802 net: 802: psnap.c: Use built-in RCU list checking 2020-02-24 13:02:53 -08:00
8021q net: vlan: suppress "failed to kill vid" warnings 2020-02-17 14:30:54 -08:00
appletalk
atm docs: networking: convert atm.txt to ReST 2020-04-28 14:38:38 -07:00
ax25 docs: networking: convert ax25.txt to ReST 2020-04-28 14:38:38 -07:00
batman-adv batman-adv: remove unused inline function batadv_arp_change_timeout 2020-04-24 15:22:41 +02:00
bluetooth Bluetooth: Enhanced Connection Complete event belongs to LL Privacy 2020-04-16 12:43:03 +03:00
bpf bpf: Fix build warning regarding missing prototypes 2020-03-28 18:13:18 +01:00
bpfilter SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-05-01 17:02:27 -07:00
caif net: caif: Fix use correct return type for ndo_start_xmit() 2020-04-30 12:13:07 -07:00
can can: j1939: j1939_sk_bind(): take priv after lock is held 2019-12-08 11:52:02 +01:00
ceph docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-05-01 17:02:27 -07:00
dcb
dccp dccp: remove unused inline function dccp_set_seqno 2020-04-25 20:42:57 -07:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-05-01 17:02:27 -07:00
dns_resolver docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
dsa Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-04-25 20:18:53 -07:00
ethernet net: remove eth_change_mtu 2020-01-27 11:09:31 +01:00
ethtool drivers: Remove inclusion of vermagic header 2020-04-21 13:27:37 -07:00
hsr hsr: remove hsr interface if all slaves are removed 2020-04-30 13:25:18 -07:00
ieee802154 nl802154: add missing attribute validation for dev_type 2020-03-03 13:28:48 -08:00
ife
ipv4 inet_diag: bc: read cgroup id only for full sockets 2020-05-02 16:42:51 -07:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-05-01 17:02:27 -07:00
iucv treewide: Use sizeof_field() macro 2019-12-09 10:36:44 -08:00
kcm net: kcm: kcmproc.c: Fix RCU list suspicious usage warning 2020-03-16 17:14:02 -07:00
key
l2tp l2tp: Allow management of tunnels and session in user namespace 2020-04-08 14:30:46 -07:00
l3mdev
lapb docs: networking: convert lapb-module.txt to ReST 2020-04-30 12:56:35 -07:00
llc af_llc: fix if-statement empty body warning 2020-02-26 20:38:13 -08:00
mac80211 docs: networking: convert mac80211-injection.txt to ReST 2020-04-30 12:56:36 -07:00
mac802154
mpls sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
mptcp tcp: mptcp: use mptcp receive buffer space to select rcv window 2020-04-25 20:37:52 -07:00
ncsi net/ncsi: Support for multi host mellanox card 2020-01-09 18:36:22 -08:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-05-01 17:02:27 -07:00
netlabel netlabel: Kconfig: Update reference for NetLabel Tools project 2020-04-22 19:55:01 -07:00
netlink netlink: add infrastructure to expose policies to userspace 2020-04-30 17:51:42 -07:00
netrom net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node 2020-04-18 13:09:46 -07:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-12 22:34:48 -07:00
nsh
openvswitch net: openvswitch: use div_u64() for 64-by-32 divisions 2020-04-25 20:48:21 -07:00
packet net/packet: tpacket_rcv: avoid a producer race condition 2020-03-15 00:25:25 -07:00
phonet sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
psample net: psample: fix skb_over_panic 2019-11-26 14:40:13 -08:00
qrtr net: qrtr: Add tracepoint support 2020-04-22 12:55:54 -07:00
rds Merge branch 'work.sysctl' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-04-28 21:23:38 +02:00
rfkill rfkill: Fix incorrect check to avoid NULL pointer dereference 2019-12-16 10:15:49 +01:00
rose Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-01-26 10:40:21 +01:00
rxrpc docs: networking: convert rxrpc.txt to ReST 2020-04-30 12:56:38 -07:00
sched net: sched: fallback to qdisc noqueue if default qdisc setup fail 2020-05-04 11:50:51 -07:00
sctp Merge branch 'work.sysctl' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-04-28 21:23:38 +02:00
smc net/smc: save SMC-R peer link_uid 2020-05-04 10:54:39 -07:00
strparser
sunrpc Merge branch 'work.sysctl' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-04-28 21:23:38 +02:00
switchdev net: switchdev: do not propagate bridge updates across bridges 2020-02-26 20:58:33 -08:00
tipc tipc: Fix potential tipc_node refcnt leak in tipc_rcv 2020-04-18 13:24:20 -07:00
tls net/tls: fix const assignment warning 2020-04-08 14:34:02 -07:00
unix net: datagram: drop 'destructor' argument from several helpers 2020-02-28 12:12:53 -08:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-02-27 18:31:39 -08:00
wimax
wireless netlink: remove NLA_EXACT_LEN_WARN 2020-04-30 17:51:42 -07:00
x25 docs: networking: convert x25.txt to ReST 2020-05-01 12:24:40 -07:00
xdp xsk: Fix typo in xsk_umem_consume_tx and xsk_generic_xmit comments 2020-04-26 09:41:31 -07:00
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2020-03-30 10:59:20 -07:00
compat.c net: abstract out normal and compat msghdr import 2020-03-10 09:12:49 -06:00
Kconfig docs: networking: convert pktgen.txt to ReST 2020-04-30 12:56:37 -07:00
Makefile mptcp: Add MPTCP socket stubs 2020-01-24 13:44:07 +01:00
socket.c for-5.7/io_uring-2020-03-29 2020-03-30 12:18:49 -07:00
sysctl_net.c