iproute2's tc was updated to support the recently upstreamed cake qdisc.
Backport this canonical support from upstream into iproute2 v4.16

There is no kernel kmod/userspace tc ABI change in this release from the
previous package bump, so everyone can breath a sigh of relief.

This is largely a code style change, the exception to prove the rule:
option 'autorate_ingress' has been changed to 'autorate-ingress' to fit
in with upstream option naming expectations.

No openwrt package (e.g. sqm-scripts) has knowledge of
'autorate_ingress' thus only users who made their own scripts or used
it within the 'dangerous configuration' options of sqm-scripts will be
affected.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>

Bump iproute2/tc support of cake.

Add support for cake's change to u64 attribute passing for certain
attributes (rate & byte counts)

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
(cherry picked from commit a2165f936e94ed71dff5fdbf0fbc58c88fb17158)

The sender domain has a DMARC Reject/Quarantine policy which disallows
sending mailing list messages using the original "From" header.

To mitigate this problem, the original message has been wrapped
automatically by the mailing list software.
Bearing fruits of the latest upstreaming efforts on cake.

Changes: diffserv-llt dropped.  The paper describing this DSCP
allocation has gone stale and doesn't appear used.

The userspace to kernel netlink messages for cake have been reworked in
a backwards incompatible way, so tc & cake must be bumped together this
once.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>

The sender domain has a DMARC Reject/Quarantine policy which disallows
sending mailing list messages using the original "From" header.

To mitigate this problem, the original message has been wrapped
automatically by the mailing list software.
print_uint() will silently promote its variable type to uint64_t, but there
is nothing that ensures that the format string specifier passed along with
it fits (and the function name suggest to pass "%u").

Fix this by changing print_uint() to use a native 'unsigned int' type, and
introduce a separate print_u64() function for printing 64-bit values. All
call sites that were actually printing 64-bit values using print_uint() are
converted to use print_u64() instead.

Since print_int() was already using native int types, just add a
print_s64() to match, but don't convert any call sites.

Fixes wonkyness in some stats from some qdiscs under tc

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>

Update to latest version of iproute2, refresh patches.
See https://lkml.org/lkml/2018/4/2/349 for a full overview of the
changes in 4.16.
Build and tested on AR7xxx against musl

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

This reverts commit 745d0e7f4b6e8659cc967291acd33889035127f0.

It looks like upstream don't want the patch so let's revert it here too.

I hope a fix from upstream is forthcoming.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>

Cake in kernel space now splits stats structure handling across netlink
messages to reduce stack usage issue flagged by upstream kernel checks.
Update user space (tc) qdisc handling to understand this new regime.

Cake also reports packet overheads & compensation in a different way so
add display code for this. e.g.

'tc -s qdisc show dev eth0' reports this extra detail:

 min/max transport layer size:         28 /    1500
 min/max overhead-adjusted size:       65 /    1550
 average transport hdr offset:         14

Cake also supports output in JSON format.

Patch is bulkier than before because a (slightly out of date - see above
stats) man page is included for reference. Better than nothing!

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>

print_int used 'int' type internally, whereas print_uint used 'uint64_t'

These helper functions eventually call vfprintf(fp, fmt, args) which is
a variable argument list function and is dependent upon 'fmt' containing
correct information about the length of the passed arguments.

Unfortunately print_int v print_uint offered no clue to the programmer
that internally passed ints to print_uint were being promoted to 64bits,
thus the format passed in 'fmt' string vs the actual passed integer
could be different lengths.  This is even more interesting on big endian
architectures where 'vfprintf' would be looking in the middle of an
int64 type.  Symptoms of this included tc qdisc showing bizarre values
for a variety of fields across a variety of qdiscs (e.g. refcnt, flows,
quantum)

print_u/int now stick with native int size.

A similar patch has been sent upstream.

Fixes FS#1425

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>

Remove this old patch which prevents showing the xfrm ports for SCTP

This was added in commit 60c1f0f64d23 ("finally move buildroot-ng to trunk")

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

The musl compatibility patches are now included in the upstream version.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>