Merge tag 'docs/v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull rst conversion of docs from Mauro Carvalho Chehab:
 "As agreed with Jon, I'm sending this big series directly to you, c/c
  him, as this series required a special care, in order to avoid
  conflicts with other trees"

* tag 'docs/v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (77 commits)
  docs: kbuild: fix build with pdf and fix some minor issues
  docs: block: fix pdf output
  docs: arm: fix a breakage with pdf output
  docs: don't use nested tables
  docs: gpio: add sysfs interface to the admin-guide
  docs: locking: add it to the main index
  docs: add some directories to the main documentation index
  docs: add SPDX tags to new index files
  docs: add a memory-devices subdir to driver-api
  docs: phy: place documentation under driver-api
  docs: serial: move it to the driver-api
  docs: driver-api: add remaining converted dirs to it
  docs: driver-api: add xilinx driver API documentation
  docs: driver-api: add a series of orphaned documents
  docs: admin-guide: add a series of orphaned documents
  docs: cgroup-v1: add it to the admin-guide book
  docs: aoe: add it to the driver-api book
  docs: add some documentation dirs to the driver-api book
  docs: driver-model: move it to the driver-api book
  docs: lp855x-driver.rst: add it to the driver-api book
  ...

1 files changed, 44 insertions, 0 deletions

diff --git a/Documentation/admin-guide/cgroup-v1/net_cls.rst b/Documentation/admin-guide/cgroup-v1/net_cls.rst
new file mode 100644
index 000000000000..a2cf272af7a0
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+++ b/Documentation/admin-guide/cgroup-v1/net_cls.rst
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+=========================
+Network classifier cgroup
+=========================
+
+The Network classifier cgroup provides an interface to
+tag network packets with a class identifier (classid).
+
+The Traffic Controller (tc) can be used to assign
+different priorities to packets from different cgroups.
+Also, Netfilter (iptables) can use this tag to perform
+actions on such packets.
+
+Creating a net_cls cgroups instance creates a net_cls.classid file.
+This net_cls.classid value is initialized to 0.
+
+You can write hexadecimal values to net_cls.classid; the format for these
+values is 0xAAAABBBB; AAAA is the major handle number and BBBB
+is the minor handle number.
+Reading net_cls.classid yields a decimal result.
+
+Example::
+
+	mkdir /sys/fs/cgroup/net_cls
+	mount -t cgroup -onet_cls net_cls /sys/fs/cgroup/net_cls
+	mkdir /sys/fs/cgroup/net_cls/0
+	echo 0x100001 >  /sys/fs/cgroup/net_cls/0/net_cls.classid
+
+- setting a 10:1 handle::
+
+	cat /sys/fs/cgroup/net_cls/0/net_cls.classid
+	1048577
+
+- configuring tc::
+
+	tc qdisc add dev eth0 root handle 10: htb
+	tc class add dev eth0 parent 10: classid 10:1 htb rate 40mbit
+
+- creating traffic class 10:1::
+
+	tc filter add dev eth0 parent 10: protocol ip prio 10 handle 1: cgroup
+
+configuring iptables, basic example::
+
+	iptables -A OUTPUT -m cgroup ! --cgroup 0x100001 -j DROP