Commit 373e13bc authored by Phil Sutter's avatar Phil Sutter Committed by David S. Miller
Browse files

selftests: tc-testing: u32: Add tests covering sample option 



Kernel's key folding basically consists of shifting away least
significant zero bits in mask and masking the resulting value with
(divisor - 1). Test for u32's 'sample' option to behave identical.

Suggested-by: default avatarJamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: default avatarPhil Sutter <phil@nwl.cc>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1a9b86c9

tools/testing/selftests/tc-testing/tc-tests/filters/u32.json

+46 −0
Original line number Diff line number Diff line
@@ -201,5 +201,51 @@ 
        "teardown": [

            "$TC qdisc del dev $DEV1 ingress"

        ]

    },

    {

        "id": "0692",

        "name": "Test u32 sample option, divisor 256",

        "category": [

            "filter",

            "u32"

        ],

        "plugins": {

            "requires": "nsPlugin"

        },

        "setup": [

            "$TC qdisc add dev $DEV1 ingress",

            "$TC filter add dev $DEV1 ingress prio 99 handle 1: u32 divisor 256"

        ],

        "cmdUnderTest": "bash -c \"for mask in ff ffff ffffff ffffffff ff00ff ff0000ff ffff00ff; do $TC filter add dev $DEV1 ingress prio 99 u32 ht 1: sample u32 0x10203040 \\$mask match u8 0 0 classid 1:1; done\"",

        "expExitCode": "0",

        "verifyCmd": "$TC filter show dev $DEV1 ingress",

        "matchPattern": "filter protocol all pref 99 u32( (chain|fh|order) [0-9:]+){3} key ht 1 bkt 40 flowid 1:1",

        "matchCount": "7",

        "teardown": [

            "$TC qdisc del dev $DEV1 ingress"

        ]

    },

    {

        "id": "2478",

        "name": "Test u32 sample option, divisor 16",

        "category": [

            "filter",

            "u32"

        ],

        "plugins": {

            "requires": "nsPlugin"

        },

        "setup": [

            "$TC qdisc add dev $DEV1 ingress",

            "$TC filter add dev $DEV1 ingress prio 99 handle 1: u32 divisor 256"

        ],

        "cmdUnderTest": "bash -c \"for mask in 70 f0 ff0 fff0 ff00f0; do $TC filter add dev $DEV1 ingress prio 99 u32 ht 1: sample u32 0x10203040 \\$mask match u8 0 0 classid 1:1; done\"",

        "expExitCode": "0",

        "verifyCmd": "$TC filter show dev $DEV1 ingress",

        "matchPattern": "filter protocol all pref 99 u32( (chain|fh|order) [0-9:]+){3} key ht 1 bkt 4 flowid 1:1",

        "matchCount": "5",

        "teardown": [

            "$TC qdisc del dev $DEV1 ingress"

        ]

    }

]