[Click] Is DirectIPLookup work in kernel mode?

[Alexander Sotnikov]

Hi
Is DirectIPLookoop work in kernel mode? Or any fast lookup scheme? 
Radix  "appear' to work but kernel panic after several minutes of 
running or always crash after new config load
because i get "line 82:  failed to create element 'rt' "   with current 
CVS version 1.5pre on 2.4.26 SMP
StaticIPLookup worg fine in place of DirectIPLookuo?
Any clue how to fix this?



// fake-iprouter.click

// This file is a network-independent version of the IP router
// configuration used in our SOSP paper.

// The network sources (FromDevice or PollDevice elements) have been
// replaced with an InfiniteSource, which sends exactly the packets we sent
// in our tests. The ARPQueriers have been replaced with EtherEncaps, and
// the network sinks (ToDevice elements) have been replaced with Discards.
// Thus, you can play around with IP routing -- benchmark our code, for
// example -- even if you don't have the Linux module or the pcap library.


// Kernel configuration for cone as a router between
// 18.26.4 (eth0) and 18.26.7 (eth1).
// Proxy ARPs for 18.26.7 on eth0.

// eth1, 00:00:C0:AE:67:EF, 18.26.4.1
// eth2, 00:00:C0:4F:71:EF, 18.26.7.1

// 0. ARP queries
// 1. ARP replies
// 2. IP
// 3. Other
// We need separate classifiers for each interface because
// we only want proxy ARP on eth0.
c0 :: Classifier(12/0806 20/0001,
12/0806 20/0002,
12/0800,
-);

c1 :: Classifier(12/0806 20/0001,
12/0806 20/0002,
12/0800,
-);


fdev0 :: FromDevice(eth1);
fdev1 :: FromDevice(eth2);

tdev0 :: ToDevice(eth1);
tdev1 :: ToDevice(eth2);


fdev0 -> [0]c0;
fdev1 -> [0]c1;


out0 :: Queue(200) -> tdev0;
out1 :: Queue(200) -> tdev1;
tol :: Discard;

// An "ARP querier" for each interface.
arpq0 :: ARPQuerier(18.26.4.1, 00:00:C0:AE:67:EF);
arpq1 :: ARPQuerier(18.26.7.1, 00:00:C0:4F:71:EF);

// Deliver ARP responses to ARP queriers as well as Linux.
t :: Tee(3);
c0[1] -> t;
c1[1] -> t;
t[0] -> tol;
t[1] -> [1]arpq0
t[2] -> [1]arpq1

// Connect ARP outputs to the interface queues.
arpq0 -> out0;
arpq1 -> out1;

// Proxy ARP on eth0 for 18.26.7, as well as cone's IP address.
ar0 :: ARPResponder(18.26.4.1 00:00:C0:AE:67:EF);
c0[0] -> ar0 -> out0;

// Ordinary ARP on eth1.
ar1 :: ARPResponder(18.26.7.1 00:00:C0:4F:71:EF);
c1[0] -> ar1 -> out1;

// IP routing table. Outputs:
// 0: packets for this machine.
// 1: packets for 18.26.4.
// 2: packets for 18.26.7.
// All other packets are sent to output 1, with 18.26.4.1 as the gateway.
rt :: DirectIPLookup(18.26.4.1/32 0,
18.26.4.255/32 0,
18.26.4.0/32 0,
18.26.7.1/32 0,
18.26.7.255/32 0,
18.26.7.0/32 0,
18.26.4.0/24 1,
18.26.7.0/24 2,
0.0.0.0/0 18.26.4.2 1);

// Hand incoming IP packets to the routing table.
// CheckIPHeader checks all the lengths and length fields
// for sanity.
ip :: Strip(14)
-> CheckIPHeader(INTERFACES 18.26.4.1/24 18.26.7.1/24)
-> [0]rt;
c0[2] -> Paint(1) -> ip;
c1[2] -> Paint(2) -> ip;

// IP packets for this machine.
// ToHost expects ethernet packets, so cook up a fake header.
rt[0] -> EtherEncap(0x0800, 1:1:1:1:1:1, 2:2:2:2:2:2) -> tol;

// These are the main output paths; we've committed to a
// particular output device.
// Check paint to see if a redirect is required.
// Process record route and timestamp IP options.
// Fill in missing ip_src fields.
// Discard packets that arrived over link-level broadcast or multicast.
// Decrement and check the TTL after deciding to forward.
// Fragment.
// Send outgoing packets through ARP to the interfaces.
rt[1] -> DropBroadcasts
-> cp1 :: PaintTee(1)
-> gio1 :: IPGWOptions(18.26.4.1)
-> FixIPSrc(18.26.4.1)
-> dt1 :: DecIPTTL
-> fr1 :: IPFragmenter(300)
-> [0]arpq0;
rt[2] -> DropBroadcasts
-> cp2 :: PaintTee(2)
-> gio2 :: IPGWOptions(18.26.7.1)
-> FixIPSrc(18.26.7.1)
-> dt2 :: DecIPTTL
-> fr2 :: IPFragmenter(300)
-> [0]arpq1;

// DecIPTTL[1] emits packets with expired TTLs.
// Reply with ICMPs. Rate-limit them?
dt1[1] -> ICMPError(18.26.4.1, timeexceeded) -> [0]rt;
dt2[1] -> ICMPError(18.26.4.1, timeexceeded) -> [0]rt;

// Send back ICMP UNREACH/NEEDFRAG messages on big packets with DF set.
// This makes path mtu discovery work.
fr1[1] -> ICMPError(18.26.7.1, unreachable, needfrag) -> [0]rt;
fr2[1] -> ICMPError(18.26.7.1, unreachable, needfrag) -> [0]rt;

// Send back ICMP Parameter Problem messages for badly formed
// IP options. Should set the code to point to the
// bad byte, but that's too hard.
gio1[1] -> ICMPError(18.26.4.1, parameterproblem) -> [0]rt;
gio2[1] -> ICMPError(18.26.4.1, parameterproblem) -> [0]rt;

// Send back an ICMP redirect if required.
cp1[1] -> ICMPError(18.26.4.1, redirect, host) -> [0]rt;
cp2[1] -> ICMPError(18.26.7.1, redirect, host) -> [0]rt;

// Unknown ethernet type numbers.
c0[3] -> Print(c3) -> Discard;
c1[3] -> Print(c3) -> Discard;