Merge branch 'net-sched-Introduce-tc-connection-tracking'

Paul Blakey says:

====================
net/sched: Introduce tc connection tracking

This patch series add connection tracking capabilities in tc sw datapath.
It does so via a new tc action, called act_ct, and new tc flower classifier matching
on conntrack state, mark and label.

Usage is as follows:
$ tc qdisc add dev ens1f0_0 ingress
$ tc qdisc add dev ens1f0_1 ingress

$ tc filter add dev ens1f0_0 ingress \
  prio 1 chain 0 proto ip \
  flower ip_proto tcp ct_state -trk \
  action ct zone 2 pipe \
  action goto chain 2
$ tc filter add dev ens1f0_0 ingress \
  prio 1 chain 2 proto ip \
  flower ct_state +trk+new \
  action ct zone 2 commit mark 0xbb nat src addr 5.5.5.7 pipe \
  action mirred egress redirect dev ens1f0_1
$ tc filter add dev ens1f0_0 ingress \
  prio 1 chain 2 proto ip \
  flower ct_zone 2 ct_mark 0xbb ct_state +trk+est \
  action ct nat pipe \
  action mirred egress redirect dev ens1f0_1

$ tc filter add dev ens1f0_1 ingress \
  prio 1 chain 0 proto ip \
  flower ip_proto tcp ct_state -trk \
  action ct zone 2 pipe \
  action goto chain 1
$ tc filter add dev ens1f0_1 ingress \
  prio 1 chain 1 proto ip \
  flower ct_zone 2 ct_mark 0xbb ct_state +trk+est \
  action ct nat pipe \
  action mirred egress redirect dev ens1f0_0

The pattern used in the design here closely resembles OvS, as the plan is to also offload
OvS conntrack rules to tc. OvS datapath rules uses it's recirculation mechanism to send
specific packets to conntrack, and return with the new conntrack state (ct_state) on some other recirc_id
to be matched again (we use goto chain for this).

This results in the following OvS datapath rules:

recirc_id(0),in_port(ens1f0_0),ct_state(-trk),... actions:ct(zone=2),recirc(2)
recirc_id(2),in_port(ens1f0_0),ct_state(+new+trk),ct_mark(0xbb),... actions:ct(commit,zone=2,nat(src=5.5.5.7),mark=0xbb),ens1f0_1
recirc_id(2),in_port(ens1f0_0),ct_state(+est+trk),ct_mark(0xbb),... actions:ct(zone=2,nat),ens1f0_1

recirc_id(1),in_port(ens1f0_1),ct_state(-trk),... actions:ct(zone=2),recirc(1)
recirc_id(1),in_port(ens1f0_1),ct_state(+est+trk),... actions:ct(zone=2,nat),ens1f0_0

Changelog:
	See individual patches.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 314 insertions, 0 deletions

diff --git a/tools/testing/selftests/tc-testing/tc-tests/actions/ct.json b/tools/testing/selftests/tc-testing/tc-tests/actions/ct.json
new file mode 100644
index 000000000000..62b82fe10c89
--- /dev/null
+++ b/tools/testing/selftests/tc-testing/tc-tests/actions/ct.json
@@ -0,0 +1,314 @@
+[
+    {
+        "id": "696a",
+        "name": "Add simple ct action",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct index 42",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct zone 0 pipe.*index 42 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "9f20",
+        "name": "Add ct clear action",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct clear index 42",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct clear pipe.*index 42 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "5bea",
+        "name": "Try ct with zone",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct zone 404 index 42",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct zone 404 pipe.*index 42 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "d5d6",
+        "name": "Try ct with zone, commit",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct zone 404 commit index 42",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct commit zone 404 pipe.*index 42 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "029f",
+        "name": "Try ct with zone, commit, mark",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct zone 404 commit mark 0x42 index 42",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct commit mark 66 zone 404 pipe.*index 42 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "a58d",
+        "name": "Try ct with zone, commit, mark, nat",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct zone 404 commit mark 0x42 nat src addr 5.5.5.7 index 42",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct commit mark 66 zone 404 nat src addr 5.5.5.7 pipe.*index 42 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "901b",
+        "name": "Try ct with full nat ipv4 range syntax",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct commit nat src addr 5.5.5.7-5.5.6.0 port 1000-2000 index 44",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct commit zone 0 nat src addr 5.5.5.7-5.5.6.0 port 1000-2000 pipe.*index 44 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "072b",
+        "name": "Try ct with full nat ipv6 syntax",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct commit nat src addr 2001::1 port 1000-2000 index 44",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct commit zone 0 nat src addr 2001::1 port 1000-2000 pipe.*index 44 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "3420",
+        "name": "Try ct with full nat ipv6 range syntax",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct commit nat src addr 2001::1-2001::10 port 1000-2000 index 44",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct commit zone 0 nat src addr 2001::1-2001::10 port 1000-2000 pipe.*index 44 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "4470",
+        "name": "Try ct with full nat ipv6 range syntax + force",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct commit force nat src addr 2001::1-2001::10 port 1000-2000 index 44",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct commit force zone 0 nat src addr 2001::1-2001::10 port 1000-2000 pipe.*index 44 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "5d88",
+        "name": "Try ct with label",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct label 123123 index 44",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct zone 0 label 12312300000000000000000000000000 pipe.*index 44 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "04d4",
+        "name": "Try ct with label with mask",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct label 12312300000000000000000000000001/ffffffff000000000000000000000001 index 44",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct zone 0 label 12312300000000000000000000000001/ffffffff000000000000000000000001 pipe.*index 44 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    },
+    {
+        "id": "9751",
+        "name": "Try ct with mark + mask",
+        "category": [
+            "actions",
+            "ct"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action ct",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action ct mark 0x42/0xf0 index 42",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions list action ct",
+        "matchPattern": "action order [0-9]*: ct mark 66/0xf0 zone 0 pipe.*index 42 ref",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action ct"
+        ]
+    }
+]