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
:$bindir
24 ## Determine whether we have IPv6 support.
25 if [ -d
/proc
/sys
/net
/ipv6
]; then have6
=t
; else have6
=nil
; fi
27 ###--------------------------------------------------------------------------
34 tripectl warn tripe-ifup command-failed rc
=$rc "$*"
39 ###--------------------------------------------------------------------------
40 ### Collect arguments.
42 ## Collect the simple arguments.
44 echo >&2 "usage: $0 PEER IFNAME ADDR..."; exit 1
46 peer
=$1 ifname
=$2 family
=$3; shift 3
48 ## Parse the address family.
50 INET
,1) addr
=$1 port
=4070 ;;
51 INET
,2) addr
=$1 port
=$2 ;;
52 INET
,*) echo >&2 "$0: bad INET address"; exit 1 ;;
53 *) echo >&2 "$0: unknown address family $family"; exit 1 ;;
56 ###--------------------------------------------------------------------------
57 ### Set the interface name.
59 case "${P_IFNAME+set}" in
61 try ip link
set "$ifname" name
"$P_IFNAME"
63 $tripectl setifname
"$peer" "$ifname"
67 ###--------------------------------------------------------------------------
68 ### Configure the link.
70 ## Split local addresses into v4 and v6 lists.
74 *:*) l6addr
=${l6addr+$l6addr }$a ;;
75 *) l4addr
=${l4addr+$l4addr }$a ;;
79 ## Determine the remote v4 and v6 addresses. We only allow one remote
80 ## address for each: others can be added as routes.
89 ## Configure the first v4 address as point-to-point; add the others as plain
93 case $#,${r4addr+set} in
95 try ip addr add
"$1" peer
"$r4addr" dev
"$ifname"
101 try ip addr add
"$a" dev
"$ifname"
105 ## IPv6 point-to-point links seem broken in Linux. Attach the local and
106 ## remote addresses by hand.
112 ## If we're configured to set IPv6 addresses then we should ensure that
113 ## they're going to work, even if the default setting for new interfaces
114 ## is to disable IPv6.
115 try sysctl
-q net.ipv6.conf.
"$ifname".disable_ipv6
=0
117 ## Now add the source and destination addresses.
119 try ip addr add
"$a" dev
"$ifname"
125 ###--------------------------------------------------------------------------
126 ### Bring the interface up.
128 case $haveaddr4,$haveaddr6 in
132 case "${P_MTU+set}" in
136 pathmtu
=$
(pathmtu
"$addr")
137 mtu
=$
(expr "$pathmtu" - 29 - $A_BULK_OVERHEAD)
140 try ip link
set dev
"$ifname" up mtu
"$mtu"
144 ###--------------------------------------------------------------------------
145 ### Set the peer IPv6 address if any.
147 ## IPv6 point-to-point links seem broken in Linux. Attach the local and
148 ## remote addresses by hand.
150 case $have6,$#,${r6addr+set} in
152 try ip route add
$r6addr proto static dev
"$ifname"
156 ###--------------------------------------------------------------------------
159 ## Split the routes into v4 and v6 lists.
163 *:*) route6
=${route6+$route6 }$p ;;
164 *) route4
=${route4+$route4 }$p ;;
168 ## Add the v4 routes.
170 case $haveaddr4,$# in
173 try ip route add
$p proto static via
"$r4addr"
178 ## Add the v6 routes.
180 case $haveaddr6,$# in
183 try ip route add
$p proto static via
"${r6addr%/*}"
188 ###--------------------------------------------------------------------------
189 ### Maybe invoke a follow-on script.
191 case "${P_IFUPEXTRA+set}" in
197 ###--------------------------------------------------------------------------
198 ### Issue a notification that we've won.
201 t
) $tripectl notify tripe-ifup configured
"$peer" ;;
202 nil
) $tripectl notify tripe-ifup configured
"$peer" failed
;;
205 ###----- That's all, folks --------------------------------------------------