tools/testing/selftests/net/setup_loopback.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 netdev_check_for_carrier() {
   4         local -r dev="$1"
   5
   6         for i in {1..5}; do
   7                 carrier="$(cat /sys/class/net/${dev}/carrier)"
   8                 if [[ "${carrier}" -ne 1 ]] ; then
   9                         echo "carrier not ready yet..." >&2
  10                         sleep 1
  11                 else
  12                         echo "carrier ready" >&2
  13                         break
  14                 fi
  15         done
  16         echo "${carrier}"
  17 }
  18
  19 # Assumes that there is no existing ipvlan device on the physical device
  20 setup_loopback_environment() {
  21     local dev="$1"
  22
  23         # Fail hard if cannot turn on loopback mode for current NIC
  24         ethtool -K "${dev}" loopback on || exit 1
  25         sleep 1
  26
  27         # Check for the carrier
  28         carrier=$(netdev_check_for_carrier ${dev})
  29         if [[ "${carrier}" -ne 1 ]] ; then
  30                 echo "setup_loopback_environment failed"
  31                 exit 1
  32         fi
  33 }
  34
  35 setup_macvlan_ns(){
  36         local -r link_dev="$1"
  37         local -r ns_name="$2"
  38         local -r ns_dev="$3"
  39         local -r ns_mac="$4"
  40         local -r addr="$5"
  41
  42         ip link add link "${link_dev}" dev "${ns_dev}" \
  43                 address "${ns_mac}" type macvlan
  44         exit_code=$?
  45         if [[ "${exit_code}" -ne 0 ]]; then
  46                 echo "setup_macvlan_ns failed"
  47                 exit $exit_code
  48         fi
  49
  50         [[ -e /var/run/netns/"${ns_name}" ]] || ip netns add "${ns_name}"
  51         ip link set dev "${ns_dev}" netns "${ns_name}"
  52         ip -netns "${ns_name}" link set dev "${ns_dev}" up
  53         if [[ -n "${addr}" ]]; then
  54                 ip -netns "${ns_name}" addr add dev "${ns_dev}" "${addr}"
  55         fi
  56
  57         sleep 1
  58 }
  59
  60 cleanup_macvlan_ns(){
  61         while (( $# >= 2 )); do
  62                 ns_name="$1"
  63                 ns_dev="$2"
  64                 ip -netns "${ns_name}" link del dev "${ns_dev}"
  65                 ip netns del "${ns_name}"
  66                 shift 2
  67         done
  68 }
  69
  70 cleanup_loopback(){
  71         local -r dev="$1"
  72
  73         ethtool -K "${dev}" loopback off
  74         sleep 1
  75
  76         # Check for the carrier
  77         carrier=$(netdev_check_for_carrier ${dev})
  78         if [[ "${carrier}" -ne 1 ]] ; then
  79                 echo "setup_loopback_environment failed"
  80                 exit 1
  81         fi
  82 }