1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0-or-later 3# Copyright (c) 2006 International Business Machines Corp. 4# Copyright (c) 2020 Joerg Vehlow <[email protected]> 5# Author: Mitsuru Chinen <[email protected]> 6# 7# Verify that the kernel is not crashed when joining multiple multicast 8# groups on separate sockets, then receiving a large number of UDP 9# packets at each socket 10 11TST_NEEDS_ROOT=1 12TST_NEEDS_TMPDIR=1 13TST_SETUP="mcast_setup_normal_udp" 14TST_CLEANUP="mcast_cleanup" 15TST_TESTFUNC="do_test" 16 17do_test() 18{ 19 tst_res TINFO "joining $MCASTNUM_NORMAL IPv${TST_IPVER} multicast groups on separate sockets, then receiving a large number of UDP packets at each socket in $NS_DURATION seconds" 20 21 local addr port 22 local n=0 23 24 while [ $n -lt $MCASTNUM_NORMAL ]; do 25 # Define the multicast address 26 if [ "$TST_IPV6" ]; then 27 local n_hex=$(printf "%x" $n) 28 addr=${MCAST_IPV6_ADDR_PREFIX}:${n_hex} 29 else 30 local x=$((n / 254)) 31 local y=$((n % 254 + 1)) 32 addr=${MCAST_IPV4_ADDR_PREFIX}.${x}.${y} 33 fi 34 35 port=$(tst_get_unused_port ipv${TST_IPVER} dgram) 36 [ $? -ne 0 ] && tst_brk TBROK "no free udp port available" 37 38 # Run a receiver 39 ROD $MCAST_LCMD -f $TST_IPVER -I $(tst_iface lhost) -m $addr -p $port -b 40 41 # Run a sender 42 tst_rhost_run -s -c "$MCAST_RCMD -D $addr -f $TST_IPVER -p $port -m -I $(tst_iface rhost) -b -t $NS_DURATION" 43 44 n=$((n+1)) 45 done 46 47 sleep $NS_DURATION 48 49 tst_res TPASS "test finished successfully" 50} 51 52. mcast-lib.sh 53tst_run 54