1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4############################################################################## 5# Defines 6 7: "${WAIT_TIMEOUT:=20}" 8 9BUSYWAIT_TIMEOUT=$((WAIT_TIMEOUT * 1000)) # ms 10 11# Kselftest framework constants. 12ksft_pass=0 13ksft_fail=1 14ksft_xfail=2 15ksft_skip=4 16 17# namespace list created by setup_ns 18NS_LIST="" 19 20############################################################################## 21# Helpers 22 23__ksft_status_merge() 24{ 25 local a=$1; shift 26 local b=$1; shift 27 local -A weights 28 local weight=0 29 30 for i in "$@"; do 31 weights[$i]=$((weight++)) 32 done 33 34 if [[ ${weights[$a]} > ${weights[$b]} ]]; then 35 echo "$a" 36 return 0 37 else 38 echo "$b" 39 return 1 40 fi 41} 42 43ksft_status_merge() 44{ 45 local a=$1; shift 46 local b=$1; shift 47 48 __ksft_status_merge "$a" "$b" \ 49 $ksft_pass $ksft_xfail $ksft_skip $ksft_fail 50} 51 52ksft_exit_status_merge() 53{ 54 local a=$1; shift 55 local b=$1; shift 56 57 __ksft_status_merge "$a" "$b" \ 58 $ksft_xfail $ksft_pass $ksft_skip $ksft_fail 59} 60 61loopy_wait() 62{ 63 local sleep_cmd=$1; shift 64 local timeout_ms=$1; shift 65 66 local start_time="$(date -u +%s%3N)" 67 while true 68 do 69 local out 70 out=$("$@") 71 local ret=$? 72 if ((!ret)); then 73 echo -n "$out" 74 return 0 75 fi 76 77 local current_time="$(date -u +%s%3N)" 78 if ((current_time - start_time > timeout_ms)); then 79 echo -n "$out" 80 return 1 81 fi 82 83 $sleep_cmd 84 done 85} 86 87busywait() 88{ 89 local timeout_ms=$1; shift 90 91 loopy_wait : "$timeout_ms" "$@" 92} 93 94cleanup_ns() 95{ 96 local ns="" 97 local errexit=0 98 local ret=0 99 100 # disable errexit temporary 101 if [[ $- =~ "e" ]]; then 102 errexit=1 103 set +e 104 fi 105 106 for ns in "$@"; do 107 ip netns delete "${ns}" &> /dev/null 108 if ! busywait $BUSYWAIT_TIMEOUT ip netns list \| grep -vq "^$ns$" &> /dev/null; then 109 echo "Warn: Failed to remove namespace $ns" 110 ret=1 111 fi 112 done 113 114 [ $errexit -eq 1 ] && set -e 115 return $ret 116} 117 118cleanup_all_ns() 119{ 120 cleanup_ns $NS_LIST 121} 122 123# setup netns with given names as prefix. e.g 124# setup_ns local remote 125setup_ns() 126{ 127 local ns="" 128 local ns_name="" 129 local ns_list="" 130 for ns_name in "$@"; do 131 # Some test may setup/remove same netns multi times 132 if unset ${ns_name} 2> /dev/null; then 133 ns="${ns_name,,}-$(mktemp -u XXXXXX)" 134 eval readonly ${ns_name}="$ns" 135 else 136 eval ns='$'${ns_name} 137 cleanup_ns "$ns" 138 139 fi 140 141 if ! ip netns add "$ns"; then 142 echo "Failed to create namespace $ns_name" 143 cleanup_ns "$ns_list" 144 return $ksft_skip 145 fi 146 ip -n "$ns" link set lo up 147 ns_list="$ns_list $ns" 148 done 149 NS_LIST="$NS_LIST $ns_list" 150} 151