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Commit 19baf839 authored by Robert Olsson's avatar Robert Olsson Committed by David S. Miller
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[IPV4]: Add LC-Trie FIB lookup algorithm. 



Signed-off-by: default avatarRobert Olsson <Robert.Olsson@data.slu.se>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 18b504e2

net/ipv4/Kconfig

+26 −0
Original line number Diff line number Diff line 
#

# IP configuration

#

choice 

	prompt "Choose IP: FIB lookup""

	depends on INET

	default IP_FIB_HASH



config IP_FIB_HASH

	bool "FIB_HASH"

	---help---

	Current FIB is very proven and good enough for most users.



config IP_FIB_TRIE

	bool "FIB_TRIE"

	---help---

	Use new experimental LC-trie as FIB lookup algoritm. 

        This improves lookup performance

	

	LC-trie is described in:

	

 	IP-address lookup using LC-tries. Stefan Nilsson and Gunnar Karlsson

 	IEEE Journal on Selected Areas in Communications, 17(6):1083-1092, June 1999

	An experimental study of compression methods for dynamic tries

 	Stefan Nilsson and Matti Tikkanen. Algorithmica, 33(1):19-33, 2002.

 	http://www.nada.kth.se/~snilsson/public/papers/dyntrie2/

       

endchoice



config IP_MULTICAST

	bool "IP: multicasting"

	depends on INET

net/ipv4/Makefile

+3 −1
Original line number Diff line number Diff line
@@ -7,8 +7,10 @@ obj-y := utils.o route.o inetpeer.o protocol.o \ 
	     ip_output.o ip_sockglue.o \

	     tcp.o tcp_input.o tcp_output.o tcp_timer.o tcp_ipv4.o tcp_minisocks.o \

	     datagram.o raw.o udp.o arp.o icmp.o devinet.o af_inet.o igmp.o \

	     sysctl_net_ipv4.o fib_frontend.o fib_semantics.o fib_hash.o

	     sysctl_net_ipv4.o fib_frontend.o fib_semantics.o



obj-$(CONFIG_IP_FIB_HASH) += fib_hash.o

obj-$(CONFIG_IP_FIB_TRIE) += fib_trie.o

obj-$(CONFIG_PROC_FS) += proc.o

obj-$(CONFIG_IP_MULTIPLE_TABLES) += fib_rules.o

obj-$(CONFIG_IP_MROUTE) += ipmr.o

net/ipv4/af_inet.c

+12 −0
Original line number Diff line number Diff line
@@ -1119,6 +1119,10 @@ module_init(inet_init); 
#ifdef CONFIG_PROC_FS

extern int  fib_proc_init(void);

extern void fib_proc_exit(void);

#ifdef CONFIG_IP_FIB_TRIE

extern int  fib_stat_proc_init(void);

extern void fib_stat_proc_exit(void);

#endif

extern int  ip_misc_proc_init(void);

extern int  raw_proc_init(void);

extern void raw_proc_exit(void);
@@ -1139,11 +1143,19 @@ static int __init ipv4_proc_init(void) 
		goto out_udp;

	if (fib_proc_init())

		goto out_fib;

#ifdef CONFIG_IP_FIB_TRIE

         if (fib_stat_proc_init())

                 goto out_fib_stat;

 #endif

	if (ip_misc_proc_init())

		goto out_misc;

out:

	return rc;

out_misc:

#ifdef CONFIG_IP_FIB_TRIE

 	fib_stat_proc_exit();

out_fib_stat:

#endif

	fib_proc_exit();

out_fib:

	udp4_proc_exit();