samples: Add an IPv6 '-6' option to the pktgen scripts

Add a '-6' option to the sample pktgen scripts for sending out
IPv6 packets.

[[e-mail]1 ~/pktgen]# ./pktgen_sample03_burst_single_flow.sh -i eth0 -s 64 -d fe80::f652:14ff:fec2:a14c -m f4:52:14:c2:a1:4c -b 32 -6

[[e-mail]1 ~]# tcpdump -i eth0 -nn -c3 port 9
tcpdump: WARNING: eth0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
14:38:51.815297 IP6 fe80::f652:14ff:fec2:2ad2.9 > fe80::f652:14ff:fec2:a14c.9: UDP, length 16
14:38:51.815311 IP6 fe80::f652:14ff:fec2:2ad2.9 > fe80::f652:14ff:fec2:a14c.9: UDP, length 16
14:38:51.815313 IP6 fe80::f652:14ff:fec2:2ad2.9 > fe80::f652:14ff:fec2:a14c.9: UDP, length 16

Signed-off-by: Martin KaFai Lau <[e-mail]>
Acked-by: Alexei Starovoitov <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

samples/pktgen/parameters.sh

···
     echo "  -b : (\$BURST)     HW level bursting of SKBs"
     echo "  -v : (\$VERBOSE)   verbose"
     echo "  -x : (\$DEBUG)     debug"
+    echo "  -6 : (\$IP6)       IPv6"
     echo ""
 }
 
 ##  --- Parse command line arguments / parameters ---
 ## echo "Commandline options:"
-while getopts "s:i:d:m:t:c:b:vxh" option; do
+while getopts "s:i:d:m:t:c:b:vxh6" option; do
     case $option in
         i) # interface
           export DEV=$OPTARG
···
           export DEBUG=yes
           info "Debug mode: DEBUG=$DEBUG"
           ;;
+	6)
+	  export IP6=6
+	  info "IP6: IP6=$IP6"
+	  ;;
         h|?|*)
           usage;
           err 2 "[ERROR] Unknown parameters!!!"

samples/pktgen/pktgen_bench_xmit_mode_netif_receive.sh

···
 source ${basedir}/parameters.sh
 # Using invalid DST_MAC will cause the packets to get dropped in
 # ip_rcv() which is part of the test
-[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
+if [ -z "$DEST_IP" ]; then
+    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
+fi
 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
 [ -z "$BURST" ] && BURST=1024
 
···
 
     # Destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst $DEST_IP"
+    pg_set $dev "dst$IP6 $DEST_IP"
 
     # Inject packet into RX path of stack
     pg_set $dev "xmit_mode netif_receive"

samples/pktgen/pktgen_bench_xmit_mode_queue_xmit.sh

···
 
 # Parameter parsing via include
 source ${basedir}/parameters.sh
-[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
+if [ -z "$DEST_IP" ]; then
+    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
+fi
 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
 
 # Burst greater than 1 are invalid for queue_xmit mode
···
 
     # Destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst $DEST_IP"
+    pg_set $dev "dst$IP6 $DEST_IP"
 
     # Inject packet into TX qdisc egress path of stack
     pg_set $dev "xmit_mode queue_xmit"

samples/pktgen/pktgen_sample01_simple.sh

···
 source ${basedir}/parameters.sh
 #
 # Set some default params, if they didn't get set
-[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
+if [ -z "$DEST_IP" ]; then
+    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
+fi
 [ -z "$CLONE_SKB" ] && CLONE_SKB="0"
 # Example enforce param "-m" for dst_mac
 [ -z "$DST_MAC" ] && usage && err 2 "Must specify -m dst_mac"
···
 
 # Destination
 pg_set $DEV "dst_mac $DST_MAC"
-pg_set $DEV "dst $DEST_IP"
+pg_set $DEV "dst$IP6 $DEST_IP"
 
 # Setup random UDP port src range
 pg_set $DEV "flag UDPSRC_RND"

samples/pktgen/pktgen_sample02_multiqueue.sh

···
 UDP_MAX=109
 
 # (example of setting default params in your script)
-[ -z "$DEST_IP" ] && DEST_IP="198.18.0.42"
+if [ -z "$DEST_IP" ]; then
+    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
+fi
 [ -z "$DST_MAC" ] && DST_MAC="90:e2:ba:ff:ff:ff"
 
 # General cleanup everything since last run
···
 
     # Destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst $DEST_IP"
+    pg_set $dev "dst$IP6 $DEST_IP"
 
     # Setup random UDP port src range
     pg_set $dev "flag UDPSRC_RND"

samples/pktgen/pktgen_sample03_burst_single_flow.sh

···
 # Parameter parsing via include
 source ${basedir}/parameters.sh
 # Set some default params, if they didn't get set
-[ -z "$DEST_IP" ]   && DEST_IP="198.18.0.42"
+if [ -z "$DEST_IP" ]; then
+    [ -z "$IP6" ] && DEST_IP="198.18.0.42" || DEST_IP="FD00::1"
+fi
 [ -z "$DST_MAC" ]   && DST_MAC="90:e2:ba:ff:ff:ff"
 [ -z "$BURST" ]     && BURST=32
 [ -z "$CLONE_SKB" ] && CLONE_SKB="100000"
···
 
     # Destination
     pg_set $dev "dst_mac $DST_MAC"
-    pg_set $dev "dst $DEST_IP"
+    pg_set $dev "dst$IP6 $DEST_IP"
 
     # Setup burst, for easy testing -b 0 disable bursting
     # (internally in pktgen default and minimum burst=1)