tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4# This assumes running on a host with two virtio interfaces connected
5# back to back. Example script to do such wire-up of tap devices would
6# look like this:
7#
8# =======================================================================================================
9# #!/bin/bash
10#
11# DEV1="$1"
12# DEV2="$2"
13#
14# sudo tc qdisc add dev $DEV1 clsact
15# sudo tc qdisc add dev $DEV2 clsact
16# sudo tc filter add dev $DEV1 ingress protocol all pref 1 matchall action mirred egress redirect dev $DEV2
17# sudo tc filter add dev $DEV2 ingress protocol all pref 1 matchall action mirred egress redirect dev $DEV1
18# sudo ip link set $DEV1 up
19# sudo ip link set $DEV2 up
20# =======================================================================================================
21
22REQUIRE_MZ="no"
23NETIF_CREATE="no"
24NETIF_FIND_DRIVER="virtio_net"
25NUM_NETIFS=2
26
27H1_IPV4="192.0.2.1"
28H2_IPV4="192.0.2.2"
29H1_IPV6="2001:db8:1::1"
30H2_IPV6="2001:db8:1::2"
31
32VIRTIO_NET_F_MAC=5
33
34virtio_device_get()
35{
36 local dev=$1; shift
37 local device_path="/sys/class/net/$dev/device/"
38
39 basename `realpath $device_path`
40}
41
42virtio_device_rebind()
43{
44 local dev=$1; shift
45 local device=`virtio_device_get $dev`
46
47 echo "$device" > /sys/bus/virtio/drivers/virtio_net/unbind
48 echo "$device" > /sys/bus/virtio/drivers/virtio_net/bind
49}
50
51virtio_debugfs_get()
52{
53 local dev=$1; shift
54 local device=`virtio_device_get $dev`
55
56 echo /sys/kernel/debug/virtio/$device/
57}
58
59check_virtio_debugfs()
60{
61 local dev=$1; shift
62 local debugfs=`virtio_debugfs_get $dev`
63
64 if [ ! -f "$debugfs/device_features" ] ||
65 [ ! -f "$debugfs/filter_feature_add" ] ||
66 [ ! -f "$debugfs/filter_feature_del" ] ||
67 [ ! -f "$debugfs/filter_features" ] ||
68 [ ! -f "$debugfs/filter_features_clear" ]; then
69 echo "SKIP: not possible to access debugfs for $dev"
70 exit $ksft_skip
71 fi
72}
73
74virtio_feature_present()
75{
76 local dev=$1; shift
77 local feature=$1; shift
78 local debugfs=`virtio_debugfs_get $dev`
79
80 cat $debugfs/device_features |grep "^$feature$" &> /dev/null
81 return $?
82}
83
84virtio_filter_features_clear()
85{
86 local dev=$1; shift
87 local debugfs=`virtio_debugfs_get $dev`
88
89 echo "1" > $debugfs/filter_features_clear
90}
91
92virtio_filter_feature_add()
93{
94 local dev=$1; shift
95 local feature=$1; shift
96 local debugfs=`virtio_debugfs_get $dev`
97
98 echo "$feature" > $debugfs/filter_feature_add
99}