Eric Dumazet 80ba92fa1a codel: add ce_threshold attribute ... For DCTCP or similar ECN based deployments on fabrics with shallow buffers, hosts are responsible for a good part of the buffering. This patch adds an optional ce_threshold to codel & fq_codel qdiscs, so that DCTCP can have feedback from queuing in the host. A DCTCP enabled egress port simply have a queue occupancy threshold above which ECT packets get CE mark. In codel language this translates to a sojourn time, so that one doesn't have to worry about bytes or bandwidth but delays. This makes the host an active participant in the health of the whole network. This also helps experimenting DCTCP in a setup without DCTCP compliant fabric. On following example, ce_threshold is set to 1ms, and we can see from 'ldelay xxx us' that TCP is not trying to go around the 5ms codel target. Queue has more capacity to absorb inelastic bursts (say from UDP traffic), as queues are maintained to an optimal level. lpaa23:~# ./tc -s -d qd sh dev eth1 qdisc mq 1: dev eth1 root Sent 87910654696 bytes 58065331 pkt (dropped 0, overlimits 0 requeues 42961) backlog 3108242b 364p requeues 42961 qdisc codel 8063: dev eth1 parent 1:1 limit 1000p target 5.0ms ce_threshold 1.0ms interval 100.0ms Sent 7363778701 bytes 4863809 pkt (dropped 0, overlimits 0 requeues 5503) rate 2348Mbit 193919pps backlog 255866b 46p requeues 5503 count 0 lastcount 0 ldelay 1.0ms drop_next 0us maxpacket 68130 ecn_mark 0 drop_overlimit 0 ce_mark 72384 qdisc codel 8064: dev eth1 parent 1:2 limit 1000p target 5.0ms ce_threshold 1.0ms interval 100.0ms Sent 7636486190 bytes 5043942 pkt (dropped 0, overlimits 0 requeues 5186) rate 2319Mbit 191538pps backlog 207418b 64p requeues 5186 count 0 lastcount 0 ldelay 694us drop_next 0us maxpacket 68130 ecn_mark 0 drop_overlimit 0 ce_mark 69873 qdisc codel 8065: dev eth1 parent 1:3 limit 1000p target 5.0ms ce_threshold 1.0ms interval 100.0ms Sent 11569360142 bytes 7641602 pkt (dropped 0, overlimits 0 requeues 5554) rate 3041Mbit 251096pps backlog 210446b 59p requeues 5554 count 0 lastcount 0 ldelay 889us drop_next 0us maxpacket 68130 ecn_mark 0 drop_overlimit 0 ce_mark 37780 ... Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Florian Westphal <fw@strlen.de> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Glenn Judd <glenn.judd@morganstanley.com> Cc: Nandita Dukkipati <nanditad@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Yuchung Cheng <ycheng@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-05-10 19:50:20 -04:00
..
android	…
byteorder	…
caif	…
can	can: introduce new raw socket option to join the given CAN filters	2015-04-01 11:28:22 +02:00
cifs	…
dvb	…
genwqe	…
hdlc	…
hsi	HSI: cmt_speech: Add cmt-speech driver	2015-03-31 22:14:04 +02:00
iio	iio: Export userspace IIO headers	2015-02-14 17:05:03 +00:00
isdn	…
mmc	…
netfilter	netfilter: nft_dynset: dynamic stateful expression instantiation	2015-04-13 20:19:55 +02:00
netfilter_arp	…
netfilter_bridge	uapi: ebtables: don't include linux/if.h	2015-04-13 20:08:38 +02:00
netfilter_ipv4	…
netfilter_ipv6	…
nfsd	nfsd: eliminate NFSD_DEBUG	2015-04-21 16:16:02 -04:00
raid	Add new disk to clustered array	2015-02-23 09:59:07 -06:00
spi	…
sunrpc	…
tc_act	act_bpf: add initial eBPF support for actions	2015-03-20 19:10:44 -04:00
tc_ematch	…
usb	usb: gadget: ffs: add eventfd notification about ffs events	2015-01-27 09:34:59 -06:00
wimax	…
Kbuild	Some virtio internal cleanups, a new virtio device "virtio input", and	2015-04-22 10:55:06 -07:00
a.out.h	…
acct.h	…
adb.h	…
adfs_fs.h	…
affs_hardblocks.h	…
agpgart.h	…
aio_abi.h	…
am437x-vpfe.h	[media] am437x: include linux/videodev2.h for expanding BASE_VIDIOC_PRIVATE	2015-04-02 18:10:35 -03:00
apm_bios.h	…
arcfb.h	…
atalk.h	…
atm.h	…
atm_eni.h	…
atm_he.h	…
atm_idt77105.h	…
atm_nicstar.h	…
atm_tcp.h	…
atm_zatm.h	…
atmapi.h	…
atmarp.h	…
atmbr2684.h	…
atmclip.h	…
atmdev.h	…
atmioc.h	…
atmlec.h	…
atmmpc.h	…
atmppp.h	…
atmsap.h	…
atmsvc.h	…
audit.h	powerpc updates for 3.19 batch 2	2014-12-19 12:57:45 -08:00
auto_fs.h	…
auto_fs4.h	…
auxvec.h	…
ax25.h	…
b1lli.h	…
baycom.h	…
bcache.h	…
bcm933xx_hcs.h	…
bfs_fs.h	…
binfmts.h	…
blkpg.h	…
blktrace_api.h	…
bpf.h	bpf: fix bpf helpers to use skb->mac_header relative offsets	2015-04-16 14:08:49 -04:00
bpf_common.h	…
bpqether.h	…
bsg.h	…
btrfs.h	Btrfs: Remove unnecessary placeholder in btrfs_err_code	2015-02-02 19:25:51 -08:00
can.h	can.h: make padding given by gcc explicit	2015-05-06 08:03:19 +02:00
capability.h	…
capi.h	…
cciss_defs.h	…
cciss_ioctl.h	…
cdrom.h	…
cgroupstats.h	…
chio.h	…
cm4000_cs.h	…
cn_proc.h	…
coda.h	…
coda_psdev.h	…
coff.h	…
connector.h	…
const.h	…
cramfs_fs.h	…
cuda.h	…
cyclades.h	…
cycx_cfm.h	…
dcbnl.h	net/dcb: Add IEEE QCN attribute	2015-03-06 21:50:02 -05:00
dccp.h	…
dlm.h	…
dlm_device.h	…
dlm_netlink.h	…
dlm_plock.h	…
dlmconstants.h	…
dm-ioctl.h	dm: add full blk-mq support to request-based DM	2015-04-15 12:10:16 -04:00
dm-log-userspace.h	…
dn.h	…
dqblk_xfs.h	…
edd.h	…
efs_fs_sb.h	…
elf-em.h	Add ELF machine define for Nios2	2014-12-08 12:55:57 +08:00
elf-fdpic.h	…
elf.h	arm64: ptrace: add NT_ARM_SYSTEM_CALL regset	2014-11-28 10:19:49 +00:00
elfcore.h	…
errno.h	…
errqueue.h	…
ethtool.h	ethtool: rename reserved1 memeber in ethtool_drvinfo for expansion ROM version	2015-02-09 14:07:54 -08:00
eventpoll.h	…
fadvise.h	…
falloc.h	fs: Add support FALLOC_FL_INSERT_RANGE for fallocate	2015-03-25 15:07:05 +11:00
fanotify.h	…
fb.h	…
fcntl.h	…
fd.h	…
fdreg.h	…
fib_rules.h	…
fiemap.h	…
filter.h	bpf: fix bpf helpers to use skb->mac_header relative offsets	2015-04-16 14:08:49 -04:00
firewire-cdev.h	…
firewire-constants.h	…
flat.h	…
fou.h	fou: implement FOU_CMD_GET	2015-04-12 21:25:13 -04:00
fs.h	vfs: add support for a lazytime mount option	2015-02-05 02:45:00 -05:00
fsl_hypervisor.h	…
fuse.h	…
futex.h	…
gameport.h	…
gen_stats.h	…
genetlink.h	…
gfs2_ondisk.h	…
gigaset_dev.h	…
hash_info.h	…
hdlc.h	…
hdlcdrv.h	…
hdreg.h	…
hid.h	…
hiddev.h	…
hidraw.h	…
hpet.h	…
hsr_netlink.h	…
hw_breakpoint.h	…
hyperv.h	…
hysdn_if.h	…
i2c-dev.h	…
i2c.h	…
i2o-dev.h	…
i8k.h	…
icmp.h	…
icmpv6.h	…
if.h	…
if_addr.h	ipv6: introduce IFA_F_STABLE_PRIVACY flag	2015-03-23 22:12:09 -04:00
if_addrlabel.h	…
if_alg.h	crypto: af_alg - add user space interface for AEAD	2014-12-05 23:56:55 +08:00
if_arcnet.h	…
if_arp.h	…
if_bonding.h	…
if_bridge.h	bridge: support for multiple vlans and vlan ranges in setlink and dellink requests	2015-01-12 16:47:04 -05:00
if_cablemodem.h	…
if_eql.h	…
if_ether.h	…
if_fc.h	…
if_fddi.h	…
if_frad.h	…
if_hippi.h	…
if_infiniband.h	…
if_link.h	if_link: Add an additional parameter to ifla_vf_info for RSS querying	2015-04-10 21:57:22 -07:00
if_ltalk.h	…
if_packet.h	af_packet: pass checksum validation status to the user	2015-03-23 22:01:28 -04:00
if_phonet.h	…
if_plip.h	…
if_ppp.h	…
if_pppol2tp.h	…
if_pppox.h	…
if_slip.h	…
if_team.h	…
if_tun.h	if_tun: drop broken IFF_VNET_LE	2014-12-16 11:19:42 -05:00
if_tunnel.h	…
if_vlan.h	…
if_x25.h	…
igmp.h	…
in.h	ip: Add offset parameter to ip_cmsg_recv	2015-01-05 22:44:46 -05:00
in6.h	in6: fix conflict with glibc	2014-12-22 16:12:36 -05:00
in_route.h	…
inet_diag.h	tcp: prepare CC get_info() access from getsockopt()	2015-04-29 17:10:38 -04:00
inotify.h	…
input.h	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2015-04-14 18:25:15 -07:00
ioctl.h	…
ip.h	…
ip6_tunnel.h	…
ip_vs.h	ipvs: use 64-bit rates in stats	2015-02-09 16:59:03 +09:00
ipc.h	…
ipmi.h	…
ipmi_msgdefs.h	…
ipsec.h	…
ipv6.h	ipv6: introduce secret_stable to ipv6_devconf	2015-03-23 22:12:08 -04:00
ipv6_route.h	…
ipx.h	…
irda.h	…
irqnr.h	…
isdn.h	…
isdn_divertif.h	…
isdn_ppp.h	…
isdnif.h	…
iso_fs.h	…
ivtv.h	…
ivtvfb.h	…
ixjuser.h	…
jffs2.h	…
joystick.h	…
kcmp.h	kcmp: Move kcmp.h into uapi	2014-12-02 13:52:53 -07:00
kd.h	…
kdev_t.h	…
kernel-page-flags.h	mm:add KPF_ZERO_PAGE flag for /proc/kpageflags	2015-02-11 17:06:00 -08:00
kernel.h	…
kernelcapi.h	…
kexec.h	kexec: Fix make headers_check	2015-02-17 14:34:51 -08:00
keyboard.h	…
keyctl.h	…
kfd_ioctl.h	drm/amdkfd: reformat IOCTL definitions to drm-style	2015-01-06 19:44:36 +02:00
kvm.h	KVM: PPC: Book3S HV: Add fast real-mode H_RANDOM implementation.	2015-04-21 15:21:29 +02:00
kvm_para.h	…
l2tp.h	l2tp : multicast notification to the registered listeners	2014-12-31 14:17:20 -05:00
libc-compat.h	ipv6: fix redefinition of in6_pktinfo and ip6_mtuinfo	2015-01-08 19:29:11 -08:00
limits.h	…
llc.h	…
loop.h	…
lp.h	…
magic.h	tracefs: Add new tracefs file system	2015-02-03 12:48:40 -05:00
major.h	…
map_to_7segment.h	…
matroxfb.h	…
mdio.h	…
media-bus-format.h	Merge branch 'drm-next-merged' of git://people.freedesktop.org/~airlied/linux into v4l_for_linus	2015-04-21 09:44:55 -03:00
media.h	[media] media.h: mark alsa struct in media_entity_desc as TODO	2015-02-26 08:40:10 -03:00
mei.h	…
memfd.h	…
mempolicy.h	mm: convert p[te|md]_numa users to p[te|md]_protnone_numa	2015-02-12 18:54:08 -08:00
meye.h	…
mic_common.h	…
mic_ioctl.h	…
mii.h	…
minix_fs.h	…
mman.h	…
mmtimer.h	…
module.h	…
mpls.h	…
mqueue.h	…
mroute.h	…
mroute6.h	…
msdos_fs.h	msdos_fs.h: fix 'fields' in comment	2015-01-20 13:51:06 +01:00
msg.h	ipc/msg: increase MSGMNI, remove scaling	2014-12-13 12:42:52 -08:00
mtio.h	…
n_r3964.h	…
nbd.h	…
ncp.h	…
ncp_fs.h	…
ncp_mount.h	…
ncp_no.h	…
neighbour.h	net: neighbour: Add mcast_resolicit to configure the number of multicast resolicitations in PROBE state.	2015-03-20 21:47:40 -04:00
net.h	…
net_dropmon.h	…
net_namespace.h	netns: add rtnl cmd to add and get peer netns ids	2015-01-19 14:21:18 -05:00
net_tstamp.h	net-timestamp: no-payload option	2015-02-02 18:46:51 -08:00
netconf.h	…
netdevice.h	…
netfilter.h	…
netfilter_arp.h	…
netfilter_bridge.h	…
netfilter_decnet.h	…
netfilter_ipv4.h	…
netfilter_ipv6.h	…
netlink.h	netlink: allow to listen "all" netns	2015-05-09 22:15:31 -04:00
netlink_diag.h	…
netrom.h	…
nfc.h	NFC: Forward NFC_EVT_TRANSACTION to user space	2015-02-02 21:50:40 +01:00
nfs.h	…
nfs2.h	…
nfs3.h	…
nfs4.h	uapi: Remove kernel internal declaration	2015-04-21 16:16:04 -04:00
nfs4_mount.h	…
nfs_fs.h	…
nfs_idmap.h	NFS: Move nfs_idmap.h into fs/nfs/	2015-04-23 15:16:14 -04:00
nfs_mount.h	…
nfsacl.h	…
nl80211.h	cfg80211: change GO_CONCURRENT to IR_CONCURRENT for STA	2015-05-06 15:50:02 +02:00
nubus.h	…
nvme.h	NVMe: Update SCSI Inquiry VPD 83h translation	2015-02-19 16:15:35 -07:00
nvram.h	…
omap3isp.h	…
omapfb.h	…
oom.h	…
openvswitch.h	net: openvswitch: Support masked set actions.	2015-02-07 22:40:17 -08:00
packet_diag.h	…
param.h	…
parport.h	…
patchkey.h	…
pci.h	…
pci_regs.h	PCI: Add defines for PCIe Max_Read_Request_Size	2015-01-27 08:14:26 -06:00
perf_event.h	perf: Add ITRACE_START record to indicate that tracing has started	2015-04-02 17:14:17 +02:00
personality.h	…
pfkeyv2.h	…
pg.h	…
phantom.h	…
phonet.h	…
pkt_cls.h	tc: remove unused redirect ttl	2015-05-04 12:16:12 -04:00
pkt_sched.h	codel: add ce_threshold attribute	2015-05-10 19:50:20 -04:00
pktcdvd.h	…
pmu.h	…
poll.h	…
posix_types.h	…
ppdev.h	…
ppp-comp.h	…
ppp-ioctl.h	…
ppp_defs.h	…
pps.h	…
prctl.h	MIPS,prctl: add PR_[GS]ET_FP_MODE prctl options for MIPS	2015-02-12 12:30:29 +01:00
psci.h	…
ptp_clock.h	…
ptrace.h	…
qnx4_fs.h	…
qnxtypes.h	…
quota.h	vfs: Add general support to enforce project quota limits	2015-03-18 21:55:08 +01:00
radeonfb.h	…
random.h	…
raw.h	…
rds.h	…
reboot.h	…
reiserfs_fs.h	…
reiserfs_xattr.h	…
resource.h	…
rfkill.h	…
romfs_fs.h	…
rose.h	…
route.h	…
rtc.h	…
rtnetlink.h	netns: notify netns id events	2015-04-07 17:29:41 -04:00
scc.h	…
sched.h	…
screen_info.h	…
sctp.h	…
sdla.h	…
seccomp.h	…
securebits.h	…
selinux_netlink.h	…
sem.h	ipc/sem.c: increase SEMMSL, SEMMNI, SEMOPM	2014-12-13 12:42:52 -08:00
serial.h	serial: uapi: Declare all userspace-visible io types	2015-03-07 03:39:55 +01:00
serial_core.h	serial: driver for ETRAX FS UART	2015-02-07 18:43:16 +08:00
serial_reg.h	x86, intel-mid: remove Intel MID specific serial support	2015-03-07 03:25:18 +01:00
serio.h	…
shm.h	…
signal.h	…
signalfd.h	…
smiapp.h	…
snmp.h	tcp: add TCPWinProbe and TCPKeepAlive SNMP counters	2015-05-09 16:42:32 -04:00
sock_diag.h	…
socket.h	…
sockios.h	…
sonet.h	…
sonypi.h	…
sound.h	…
soundcard.h	…
stat.h	…
stddef.h	…
string.h	…
suspend_ioctls.h	…
swab.h	…
synclink.h	…
sysctl.h	kernel: add panic_on_warn	2014-12-10 17:41:10 -08:00
sysinfo.h	…
target_core_user.h	target: Version 2 of TCMU ABI	2015-04-19 22:40:26 -07:00
taskstats.h	…
tcp.h	tcp: provide SYN headers for passive connections	2015-05-05 16:02:34 -04:00
tcp_metrics.h	…
telephony.h	…
termios.h	…
thermal.h	thermal: provide an UAPI header file	2014-12-09 14:10:41 +08:00
time.h	…
times.h	…
timex.h	…
tiocl.h	…
tipc.h	…
tipc_config.h	tipc: convert legacy nl link stat to nl compat	2015-02-09 13:20:47 -08:00
tipc_netlink.h	tipc: add ip/udp media type	2015-03-05 22:08:42 -05:00
toshiba.h	…
tty.h	…
tty_flags.h	…
types.h	…
udf_fs_i.h	…
udp.h	…
uhid.h	…
uinput.h	Input: uinput - fix ioctl nr overflow for UI_GET_SYSNAME/VERSION	2015-01-11 16:27:25 -08:00
uio.h	…
ultrasound.h	…
un.h	…
unistd.h	…
unix_diag.h	…
usbdevice_fs.h	USB: usbfs: allow URBs to be reaped after disconnection	2015-01-31 09:05:06 -08:00
usbip.h	…
utime.h	…
utsname.h	…
uuid.h	…
uvcvideo.h	…
v4l2-common.h	[media] v4l: Add V4L2_SEL_TGT_NATIVE_SIZE selection target	2014-12-04 12:37:01 -02:00
v4l2-controls.h	[media] adv7180: Add fast switch support	2015-02-02 11:51:38 -02:00
v4l2-dv-timings.h	[media] videodev2.h/v4l2-dv-timings.h: add V4L2_DV_FL_IS_CE_VIDEO flag	2015-04-08 06:36:52 -03:00
v4l2-mediabus.h	[media] v4l2-mediabus.h: use two __u16 instead of two __u32	2014-12-16 23:21:36 -02:00
v4l2-subdev.h	[media] v4l2-subdev.h: add 'which' field for the enum structs	2015-03-23 11:44:35 -07:00
veth.h	…
vfio.h	vfio: amba: VFIO support for AMBA devices	2015-03-16 14:08:44 -06:00
vhost.h	…
videodev2.h	[media] videodev2.h/v4l2-dv-timings.h: add V4L2_DV_FL_IS_CE_VIDEO flag	2015-04-08 06:36:52 -03:00
virtio_9p.h	…
virtio_balloon.h	virtio_balloon: transitional interface	2015-04-15 12:41:09 +09:30
virtio_blk.h	virtio_blk: fix comment for virtio 1.0	2015-03-10 11:48:29 +10:30
virtio_config.h	virtio: Don't expose legacy config features when VIRTIO_CONFIG_NO_LEGACY defined.	2015-02-11 15:03:16 +10:30
virtio_console.h	virtio_console: virtio 1.0 support	2014-12-09 12:06:32 +02:00
virtio_ids.h	Add virtio-input driver.	2015-03-29 12:13:52 +10:30
virtio_input.h	Add virtio-input driver.	2015-03-29 12:13:52 +10:30
virtio_net.h	virtio_net: unconditionally define struct virtio_net_hdr_v1.	2015-02-17 16:19:27 +10:30
virtio_pci.h	virtio: define VIRTIO_PCI_CAP_PCI_CFG in header.	2015-02-11 15:03:15 +10:30
virtio_ring.h	virtio: fix typo in vring_need_event() doc comment	2015-05-01 20:46:32 -07:00
virtio_rng.h	…
virtio_scsi.h	uapi/virtio_scsi: allow overriding CDB/SENSE size	2015-03-13 15:55:43 +10:30
virtio_types.h	virtio: memory access APIs	2014-12-09 12:05:24 +02:00
vm_sockets.h	…
vsp1.h	…
vt.h	…
wait.h	…
wanrouter.h	…
watchdog.h	…
wil6210_uapi.h	…
wimax.h	…
wireless.h	…
x25.h	…
xattr.h	…
xfrm.h	xfrm: simplify xfrm_address_t use	2015-03-31 13:58:35 -04:00
xilinx-v4l2-controls.h	[media] v4l: xilinx: Add Test Pattern Generator driver	2015-04-03 01:04:18 -03:00
zorro.h	…
zorro_ids.h	…