[src/trunk]: src/tests/net/arp Add basic tests for Proxy ARP

[ozaki-r <ozaki-r%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/fbf29f081140
branches:  trunk
changeset: 813899:fbf29f081140
user:      ozaki-r <ozaki-r%NetBSD.org@localhost>
date:      Thu Feb 25 03:23:15 2016 +0000

description:
Add basic tests for Proxy ARP

The tests don't much enough and need more realitic tests, for example
tests for a setup using ppp found in PR 44032.

diffstat:

 tests/net/arp/t_arp.sh |  118 ++++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 112 insertions(+), 6 deletions(-)

diffs (189 lines):

diff -r 15f1d18dd43f -r fbf29f081140 tests/net/arp/t_arp.sh
--- a/tests/net/arp/t_arp.sh    Wed Feb 24 22:17:54 2016 +0000
+++ b/tests/net/arp/t_arp.sh    Thu Feb 25 03:23:15 2016 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: t_arp.sh,v 1.10 2015/12/02 06:05:14 ozaki-r Exp $
+#      $NetBSD: t_arp.sh,v 1.11 2016/02/25 03:23:15 ozaki-r Exp $
 #
 # Copyright (c) 2015 The NetBSD Foundation, Inc.
 # All rights reserved.
@@ -32,6 +32,10 @@
 SOCKDST=unix://commsock2
 IP4SRC=10.0.1.1
 IP4DST=10.0.1.2
+IP4DST_PUB=10.0.1.3
+MACDST_PUB=b2:a1:00:00:00:01
+IP4DST_PUBPROXY=10.0.1.4
+MACDST_PUBPROXY=b2:a1:00:00:00:02
 
 DEBUG=false
 TIMEOUT=1
@@ -41,6 +45,7 @@
 atf_test_case command cleanup
 atf_test_case garp cleanup
 atf_test_case cache_overwriting cleanup
+atf_test_case pubproxy_arp cleanup
 
 cache_expiration_5s_head()
 {
@@ -72,6 +77,12 @@
        atf_set "require.progs" "rump_server"
 }
 
+pubproxy_arp_head()
+{
+       atf_set "descr" "Tests for Proxy ARP"
+       atf_set "require.progs" "rump_server"
+}
+
 setup_dst_server()
 {
        export RUMP_SERVER=$SOCKDST
@@ -225,7 +236,7 @@
        return 0
 }
 
-make_pkt_str()
+make_pkt_str_arpreq()
 {
        local target=$1
        local sender=$2
@@ -253,10 +264,10 @@
        shmif_dumpbus -p - bus1 2>/dev/null| tcpdump -n -e -r - > ./out
 
        # A GARP packet is sent for the primary address
-       pkt=$(make_pkt_str 10.0.0.1 10.0.0.1)
+       pkt=$(make_pkt_str_arpreq 10.0.0.1 10.0.0.1)
        atf_check -s exit:0 -x "cat ./out |grep -q '$pkt'"
        # No GARP packet is sent for the alias address
-       pkt=$(make_pkt_str 10.0.0.2 10.0.0.2)
+       pkt=$(make_pkt_str_arpreq 10.0.0.2 10.0.0.2)
        atf_check -s not-exit:0 -x "cat ./out |grep -q '$pkt'"
 
        atf_check -s exit:0 rump.ifconfig -w 10
@@ -265,9 +276,9 @@
 
        # No GARP packets are sent during IFF_UP
        shmif_dumpbus -p - bus1 2>/dev/null| tcpdump -n -e -r - > ./out
-       pkt=$(make_pkt_str 10.0.0.3 10.0.0.3)
+       pkt=$(make_pkt_str_arpreq 10.0.0.3 10.0.0.3)
        atf_check -s not-exit:0 -x "cat ./out |grep -q '$pkt'"
-       pkt=$(make_pkt_str 10.0.0.4 10.0.0.4)
+       pkt=$(make_pkt_str_arpreq 10.0.0.4 10.0.0.4)
        atf_check -s not-exit:0 -x "cat ./out |grep -q '$pkt'"
 }
 
@@ -309,6 +320,94 @@
        return 0
 }
 
+make_pkt_str_arprep()
+{
+       local ip=$1
+       local mac=$2
+       pkt="ethertype ARP (0x0806), length 42: "
+       pkt="Reply $ip is-at $mac, length 28"
+       echo $pkt
+}
+
+extract_new_packets()
+{
+       local old=./old
+
+       if [ ! -f $old ]; then
+               old=/dev/null
+       fi
+
+       shmif_dumpbus -p - bus1 2>/dev/null| \
+           tcpdump -n -e -r - 2>/dev/null > ./new
+       diff -u $old ./new |grep '^+' |cut -d '+' -f 2 > ./diff
+       mv -f ./new ./old
+       cat ./diff
+}
+
+check_entry_flags()
+{
+       local ip=$(echo $1 |sed 's/\./\\./g')
+       local flags=$2
+
+       atf_check -s exit:0 -o match:" $flags " -e ignore -x \
+           "rump.netstat -rn -f inet | grep ^'$ip'"
+}
+
+pubproxy_arp_body()
+{
+       local arp_keep=5
+
+       atf_check -s exit:0 ${inetserver} $SOCKSRC
+       atf_check -s exit:0 ${inetserver} $SOCKDST
+
+       setup_dst_server
+       setup_src_server $arp_keep
+
+       export RUMP_SERVER=$SOCKDST
+
+       atf_check -s exit:0 -o ignore rump.arp -s $IP4DST_PUB \
+           $MACDST_PUB pub
+       atf_check -s exit:0 -o match:'permanent published' \
+           rump.arp -n $IP4DST_PUB
+       check_entry_flags $IP4DST_PUB ULSp
+
+       $DEBUG && rump.arp -n -a
+       $DEBUG && rump.netstat -nr -f inet
+
+       atf_check -s exit:0 -o ignore rump.arp -s $IP4DST_PUBPROXY \
+           $MACDST_PUBPROXY pub proxy
+       atf_check -s exit:0 -o match:'permanent published \(proxy only\)' \
+           rump.arp -n $IP4DST_PUBPROXY
+       check_entry_flags $IP4DST_PUBPROXY UHLSp
+
+       $DEBUG && rump.arp -n -a
+       $DEBUG && rump.netstat -nr -f inet
+
+       export RUMP_SERVER=$SOCKSRC
+
+       atf_check -s not-exit:0 -o ignore -e ignore \
+           rump.ping -n -w 1 -c 1 $IP4DST_PUB
+
+       atf_check -s exit:0 sleep 1
+       extract_new_packets > ./out
+       $DEBUG && cat ./out
+
+       pkt=$(make_pkt_str_arprep $IP4DST_PUB $MACDST_PUB)
+       atf_check -s exit:0 -x "cat ./out |grep -q '$pkt'"
+
+       atf_check -s not-exit:0 -o ignore -e ignore \
+           rump.ping -n -w 1 -c 1 $IP4DST_PUBPROXY
+
+       atf_check -s exit:0 sleep 1
+       extract_new_packets > ./out
+       $DEBUG && cat ./out
+
+       pkt=$(make_pkt_str_arprep $IP4DST_PUBPROXY $MACDST_PUBPROXY)
+       atf_check -s exit:0 -x "cat ./out |grep -q '$pkt'"
+
+       return 0
+}
+
 cleanup()
 {
        env RUMP_SERVER=$SOCKSRC rump.halt
@@ -371,6 +470,12 @@
        cleanup
 }
 
+pubproxy_arp_cleanup()
+{
+       $DEBUG && dump
+       cleanup
+}
+
 atf_init_test_cases()
 {
        atf_add_test_case cache_expiration_5s
@@ -378,4 +483,5 @@
        atf_add_test_case command
        atf_add_test_case garp
        atf_add_test_case cache_overwriting
+       atf_add_test_case pubproxy_arp
 }