server: Use the new kdata system.
[tripe] / svc / tripe-ifup.in
1 #! /bin/sh
2 ###
3 ### TrIPE interface initialization script
4 ### suitable for Linux; other operating systems probably want something
5 ### similar
6
7 ###----- Licensing notica ---------------------------------------------------
8 ###
9 ### Redistribution, modification and use of this file is permitted without
10 ### limitation.
11 ###
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.
15
16 set -e
17
18 ## Import compile-time configuration.
19 : ${bindir=@bindir@}
20 : ${tripectl=$bindir/tripectl}
21 PATH=/usr/bin:/usr/sbin:/bin:/sbin:$bindir
22 export PATH TRIPEDIR
23
24 ## Determine whether we have IPv6 support.
25 if [ -d /proc/sys/net/ipv6 ]; then have6=t; else have6=nil; fi
26
27 ###--------------------------------------------------------------------------
28 ### Collect arguments.
29
30 ## Collect the simple arguments.
31 if [ $# -lt 3 ]; then
32 echo >&2 "usage: $0 PEER IFNAME ADDR..."; exit 1
33 fi
34 peer=$1 ifname=$2 family=$3; shift 3
35
36 ## Parse the address family.
37 case "$family,$#" in
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 $family"; exit 1 ;;
42 esac
43
44 ###--------------------------------------------------------------------------
45 ### Set the interface name.
46
47 case "${P_IFNAME+set}" in
48 set)
49 ip link set "$ifname" name "$P_IFNAME"
50 ifname=$P_IFNAME
51 $tripectl setifname "$peer" "$ifname"
52 ;;
53 esac
54
55 ###--------------------------------------------------------------------------
56 ### Configure the point-to-point link.
57
58 ## Split local addresses into v4 and v6 lists.
59 unset l4addr l6addr
60 for a in $P_LADDR; do
61 case "$a" in
62 *:*) l6addr=${l6addr+$l6addr }$a ;;
63 *) l4addr=${l4addr+$l4addr }$a ;;
64 esac
65 done
66
67 ## Determine the remote v4 and v6 addresses. We only allow one remote
68 ## address for each: others can be added as routes.
69 unset r4addr r6addr
70 for a in $P_RADDR; do
71 case "$a" in
72 *:*) r6addr=$a ;;
73 *) r4addr=$a ;;
74 esac
75 done
76
77 ## Configure the first v4 address as point-to-point; add the others as plain
78 ## addresses.
79 haveaddr4=nil
80 set -- $l4addr
81 case $#,${r4addr+set} in
82 [1-9]*,set)
83 ip addr add "$1" peer "$r4addr" dev "$ifname"
84 haveaddr4=t
85 shift
86 ;;
87 esac
88 for a in "$@"; do
89 ip addr add "$a/32" dev "$ifname"
90 haveaddr4=t
91 done
92
93 ## IPv6 point-to-point links seem broken in Linux. Attach the local and
94 ## remote addresses by hand.
95 haveaddr6=nil
96 set -- $l6addr
97 case $have6,$# in
98 t,[1-9]*)
99 for a in "$@"; do
100 ip addr add "$a/128" dev "$ifname"
101 haveaddr6=t
102 done
103 case ${r6addr+set} in
104 set) ip route add $r6addr/128 proto static dev "$ifname" ;;
105 esac
106 ;;
107 esac
108
109 ###--------------------------------------------------------------------------
110 ### Bring the interface up.
111
112 case $haveaddr4,$haveaddr6 in
113 nil,nil)
114 ;;
115 *)
116 case "${P_MTU+set}" in
117 set)
118 mtu=$P_MTU;;
119 *)
120 pathmtu=$(pathmtu "$addr")
121 mtu=$(expr "$pathmtu" - 33 - $A_CIPHER_BLKSZ - $A_MAC_TAGSZ)
122 ;;
123 esac
124 ip link set dev "$ifname" up mtu "$mtu"
125 ;;
126 esac
127
128 ###--------------------------------------------------------------------------
129 ### Set up routing.
130
131 ## Split the routes into v4 and v6 lists.
132 unset route4 route6
133 for p in $P_NETS; do
134 case "$p" in
135 *:*) route6=${route6+$route6 }$p ;;
136 *) route4=${route4+$route4 }$p ;;
137 esac
138 done
139
140 ## Add the v4 routes.
141 set -- $route4
142 case $haveaddr4,$# in
143 t,[1-9]*)
144 for p in "$@"; do
145 ip route add $p proto static via "$r4addr"
146 done
147 ;;
148 esac
149
150 ## Add the v6 routes.
151 set -- $route6
152 case $haveaddr6,$# in
153 t,[1-9]*)
154 for p in "$@"; do
155 ip route add $p proto static via "$r6addr"
156 done
157 ;;
158 esac
159
160 ###--------------------------------------------------------------------------
161 ### Maybe invoke a follow-on script.
162
163 case "${P_IFUPEXTRA+set}" in
164 set)
165 eval "$P_IFUPEXTRA"
166 ;;
167 esac
168
169 ###--------------------------------------------------------------------------
170 ### Issue a notification that we've won.
171
172 $tripectl notify tripe-ifup configured "$peer"
173
174 ###----- That's all, folks --------------------------------------------------