3 ### TrIPE interface initialization script
4 ### suitable for Linux; other operating systems probably want something
7 ###----- Licensing notica ---------------------------------------------------
9 ### Redistribution, modification and use of this file is permitted without
12 ### This file is distributed in the hope that it will be useful,
13 ### but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
18 ## Import compile-time configuration.
20 : ${tripectl=$bindir/tripectl}
21 PATH=/usr/bin:/usr/sbin:/bin:/sbin:$bindir
24 ## Determine whether we have IPv6 support.
25 if [ -d /proc/sys/net/ipv6 ]; then have6=t; else have6=nil; fi
27 ###--------------------------------------------------------------------------
28 ### Collect arguments.
30 ## Collect the simple arguments.
32 echo >&2 "usage: $0 PEER IFNAME ADDR..."; exit 1
34 peer=$1 ifname=$2 family=$3; shift 3
36 ## Parse the address family.
38 INET,1) addr=$1 port=4070 ;;
39 INET,2) addr=$1 port=$2 ;;
40 INET,*) echo >&2 "$0: bad INET address"; exit 1 ;;
41 *) echo >&2 "$0: unknown address family $family"; exit 1 ;;
44 ###--------------------------------------------------------------------------
45 ### Set the interface name.
47 case "${P_IFNAME+set}" in
49 ip link set "$ifname" name "$P_IFNAME"
51 $tripectl setifname "$peer" "$ifname"
55 ###--------------------------------------------------------------------------
56 ### Configure the point-to-point link.
58 ## Split local addresses into v4 and v6 lists.
62 *:*) l6addr=${l6addr+$l6addr }$a ;;
63 *) l4addr=${l4addr+$l4addr }$a ;;
67 ## Determine the remote v4 and v6 addresses. We only allow one remote
68 ## address for each: others can be added as routes.
77 ## Configure the first v4 address as point-to-point; add the others as plain
81 case $#,${r4addr+set} in
83 ip addr add "$1" peer "$r4addr" dev "$ifname"
89 ip addr add "$a/32" dev "$ifname"
93 ## IPv6 point-to-point links seem broken in Linux. Attach the local and
94 ## remote addresses by hand.
100 ip addr add "$a/128" dev "$ifname"
103 case ${r6addr+set} in
104 set) ip route add $r6addr/128 proto static dev "$ifname" ;;
109 ###--------------------------------------------------------------------------
110 ### Bring the interface up.
112 case $haveaddr4,$haveaddr6 in
116 case "${P_MTU+set}" in
120 pathmtu=$(pathmtu "$addr")
121 mtu=$(expr "$pathmtu" - 33 - $A_CIPHER_BLKSZ - $A_MAC_TAGSZ)
124 ip link set dev "$ifname" up mtu "$mtu"
128 ###--------------------------------------------------------------------------
131 ## Split the routes into v4 and v6 lists.
135 *:*) route6=${route6+$route6 }$p ;;
136 *) route4=${route4+$route4 }$p ;;
140 ## Add the v4 routes.
142 case $haveaddr4,$# in
145 ip route add $p proto static via "$r4addr"
150 ## Add the v6 routes.
152 case $haveaddr6,$# in
155 ip route add $p proto static via "$r6addr"
160 ###--------------------------------------------------------------------------
161 ### Maybe invoke a follow-on script.
163 case "${P_IFUPEXTRA+set}" in
169 ###--------------------------------------------------------------------------
170 ### Issue a notification that we've won.
172 $tripectl notify tripe-ifup configured "$peer"
174 ###----- That's all, folks --------------------------------------------------