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Cake is bearing fruits of kernel upstreaming efforts.
diffserv-llt dropped. DSCP mapping paper died and no one using it.
ack-filter re-written & simplified
tc userspace & cake kmod netlink interface usage changed in non
backwards compatible way, thus this once requires tc & cake to be
in-step. Change due to upstream requirements.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Relevant changes:
0afc1be Fixes for kernel 4.16
d2d6780 Reinitialise overhead compensation stats when reconfiguring.
a3bab9d Export overhead compensation stats to userspace.
9cd2fa8 Split tin stats to its own structure to decrease size of tc_cake_xstats
71c7b44 Gather more statistics about packet length transformations.
0517357 Rework overhead compensation to use dynamic transport header offset instead of (inaccurate) static one.
c1a0c8e Refactor length handling code to better centralise overhead calculations
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
More important bug fix:
402f05c Use full-rate mtu_time in all tins. Fixes an issue where some
cake tins experienced excessive latency since 49776da (dynamically
adjust target)
Minor bug fixes:
31277c2 Avoid unsigned comparison against zero. Fix compiler warning,
no known impact.
8cf5278 ack_filter: fix TCP flag check. A very contrived case may have
lead to dropping a SYN packet that should not be dropped.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Fix overhead accounting error introduced by f33c4d6 refactor
cake_advance_shaper and ack_filter
Symptoms were links running under rate.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
There has been recent significant activity with the cake qdisc of late
but in the cobalt branch. Some of that effort is related to upstreaming
to kernel & iproute2 mainline but we're not quite there yet. Relevant
feature changes:
ingress mode: Instead of only counting packets that make it past the
shaper, include packets we've decided to drop as well, since they did
arrive with us on the link and took link capacity.
This mode is more suitable for shaping the ingress of a link
(e.g. from ISP) rather than the more normal egress.
ptm mode: Minor optimisation in packet overhead calculation.
dual-src/dsthost/triple-isolate: Optimise only calculating src or dst
host hashes only if required.
ack-filter/ack-filter-aggressive: Filter excessive TCP ACKS. Useful in
highly assymetric links (downstream v upstream capacity) where the
majority of upstream link capacity is occupied with ACKS for downstream
traffic.
A separate iproute2 patch to teach it about Cake's new features will
follow.
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
dfb2f6c pkt_sched: make compile again
5ab7026 sch_cake: make compile again
6f28803 codel5: make more checkpatch compliant
bd426aa Fix build error on 4.12
e4a3628 Whitespace tidy up
Signed-off-by: Fushan Wen <qydwhotmail@gmail.com>
This allows packages to use kernel make options without the forced
-C $(LINUX_DIR). It also makes it more clear that it to be called from
kernel module packages directly.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
wash, mpu & some memory optimisation have now made it to the official
cake repository.
Point LEDE to the official repository.
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
The last two parameters passed between user space tc and kernel space
sched-cake were transposed due to a merge mistake in a parameter header
file.
As such, using a packet overhead figure was likely to set cake to wash
packet DSCP values. Similarly, the DSCP wash flag was used as an offset
to the displayed packet overhead value.
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
Follow upstream cake:
diffserv3: a simple 3 tin classifier more in line with sqm-scripts
defaults for other qdisc algorithms.
defaults: default qdisc options are now diffserv3 and triple-isolate.
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
Track upstream changes, incl changes in packet overhead accounting
(automatically taking care of linux' packet sizing knowledge),
improvements to triple isolated DRR handling (new flow dominance),
statistics tweak & allow more packet drops in stressed conditions.
Under tests this has significantly improved latency control under
'many flows to one' scenarious as is typical of bittorrent and MS
Windows update.
I also restored 'DSCP washing' functionality in my repo which follows
upstream closely (like a hawk!) with tc keywords 'wash/nowash'. This
allows cake to limit/control packets in bands determined by a packet's
DSCP but to clear those DSCP bits on qdisc egress. This functionality
was originally removed as part of an attempt to push cake into the
kernel, which hasn't actually happened as yet.
A matching commit is required to iproute2/tc to support the new overhead
handling, keyword changes as well as the 'wash/nowash' tweak.
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
* Change git packages to xz
* Update mirror checksums in packages where they are used
* Change a few source tarballs to xz if available upstream
* Remove unused lines in packages we're touching, requested by jow- and blogic
* We're relying more on xz-utils so add official mirror as primary source, master site as secondary.
* Add SHA256 checksums to multiple git tarball packages
Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>
COBALT is a hybrid codel/blue algo combining best elements of both.
Exhibits improved behaviour in presence of abuse from unresponsive flows
handled by 'blue', whereas responsive flows are still handled by codel.
Signed-off-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
In company networks everything except the http and https protocol is
often causes problems, because the network administrators try to block
everything else. To make it easier to use LEDE in company networks use
the https/http protocol for git access when possible.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Add 'cake' qdisc kernel module package.
V2 - KDB Small update to base on latest cake tc changes (wash option
deprecated)
V3 - KDB Move kmod-sched-cake package to kernel as is kernel related
V4 - KDB Split into individual patches, kmod & tc
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
Acked-by: Kevin Darbyshire-Bryant <kevin@darbyshire-bryant.me.uk>
