1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
# empty class selection path is accepted --------------------------------------
tcc -xif:err -Xx,all 2>&1 | grep -v '^#'
dsmark {
class (<>);
fifo;
}
EOF
block eth0 egress
qdisc 2 = fifo
qdisc 1 = dsmark indices 1
class 0 = qdisc 2
action 0 = unspec
match action 0
# baseline: class selection paths usually require inner qdisc -----------------
tcc -xif:err -Xx,all 2>&1
dsmark {
class (<$x>) if 1;
$x = class;
}
EOF
ERROR
<stdin>:2: without an inner qdisc, there is scarcely anything to select
# empty class selection path does not require inner qdisc ---------------------
tcc -xif:err -Xx,all 2>&1 | grep -v '^#'
dsmark {
class (<>) if 1;
}
EOF
block eth0 egress
qdisc 1 = dsmark indices 1
class 0 =
action 0 = class 1:0
match action 0
# tcc assigns consecutive numbers to empty class selection paths --------------
tcc -xif:err -Xx,all 2>&1 | grep -v '^#'
dsmark {
class (<>) if raw[0] == 1;
class (<>) if raw[0] == 2;
class (<>) if raw[0] == 3;
}
EOF
block eth0 egress
qdisc 1 = dsmark indices 4
class 0 =
class 1 =
class 2 =
action 3 = unspec
action 2 = class 1:2
action 1 = class 1:1
action 0 = class 1:0
match 0:0:8=0x01 action 0
match 0:0:8=0x02 action 1
match 0:0:8=0x03 action 2
match action 3
|
