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linux/net/ipv4
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David S. Miller 21d8c49e01 ipv4: Call fib_select_default() only when actually necessary. 
fib_select_default() is a complete NOP, and completely pointless
to invoke, when we have no more than 1 default route installed.

And this is far and away the common case.

So remember how many prefixlen==0 routes we have in the routing
table, and elide the call when we have no more than one of those.

This cuts output route creation time by 157 cycles on Niagara2+.

In order to add the new int to fib_table, we have to correct the type
of ->tb_data[] to unsigned long, otherwise the private area will be
unaligned on 64-bit systems.

Signed-off-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
 		2011-04-14 15:05:22 -07:00
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netfilter Fix common misspellings 2011-03-31 11:26:23 -03:00
Kconfig
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Makefile
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af_inet.c ipv4: Create and use route lookup helpers. 2011-03-12 15:08:42 -08:00
ah4.c xfrm: Use separate low and high order bits of the sequence numbers in xfrm_skb_cb 2011-03-13 20:22:28 -07:00
arp.c net: gre: provide multicast mappings for ipv4 and ipv6 2011-03-30 00:10:47 -07:00
cipso_ipv4.c Fix common misspellings 2011-03-31 11:26:23 -03:00
datagram.c ipv4: Make output route lookup return rtable directly. 2011-03-02 14:31:35 -08:00
devinet.c ipv4: Fallback to FIB local table in __ip_dev_find(). 2011-03-23 12:16:15 -07:00
esp4.c esp4: Add support for IPsec extended sequence numbers 2011-03-13 20:22:29 -07:00
fib_frontend.c Disable rp_filter for IPsec packets 2011-04-10 18:50:59 -07:00
fib_lookup.h ipv4: Fix nexthop caching wrt. scoping. 2011-03-24 18:06:47 -07:00
fib_rules.c ipv4: Use flowi4 in FIB layer. 2011-03-12 15:08:49 -08:00
fib_semantics.c ipv4: Fix nexthop caching wrt. scoping. 2011-03-24 18:06:47 -07:00
fib_trie.c ipv4: Call fib_select_default() only when actually necessary. 2011-04-14 15:05:22 -07:00
gre.c
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icmp.c Fix common misspellings 2011-03-31 11:26:23 -03:00
igmp.c ipv4: Create and use route lookup helpers. 2011-03-12 15:08:42 -08:00
inet_connection_sock.c ipv4: Use flowi4_init_output() in inet_connection_sock.c 2011-03-31 04:53:20 -07:00
inet_diag.c
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inet_fragment.c
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inet_hashtables.c
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inet_lro.c
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inet_timewait_sock.c tcp: fix inet_twsk_deschedule() 2011-02-19 18:59:04 -08:00
inetpeer.c inetpeer: should use call_rcu() variant 2011-03-13 23:22:23 -07:00
ip_forward.c
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ip_fragment.c
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ip_gre.c ipv4: Create and use route lookup helpers. 2011-03-12 15:08:42 -08:00
ip_input.c
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ip_options.c ipv4: Fix IP timestamp option (IPOPT_TS_PRESPEC) handling in ip_options_echo() 2011-03-27 23:35:02 -07:00
ip_output.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-04-11 13:44:25 -07:00
ip_sockglue.c
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ipcomp.c
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ipconfig.c Fix common misspellings 2011-03-31 11:26:23 -03:00
ipip.c ipv4: Create and use route lookup helpers. 2011-03-12 15:08:42 -08:00
ipmr.c ipv4: Use flowi4 in ipmr code. 2011-03-12 15:08:49 -08:00
netfilter.c netfilter: af_info: add 'strict' parameter to limit lookup to .oif 2011-04-04 17:00:54 +02:00
proc.c
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protocol.c
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raw.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-04-11 13:44:25 -07:00
route.c ipv4: Call fib_select_default() only when actually necessary. 2011-04-14 15:05:22 -07:00
syncookies.c ipv4: Use flowi4_init_output() in cookie_v4_check() 2011-03-31 04:54:08 -07:00
sysctl_net_ipv4.c
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tcp.c net: Allow no-cache copy from user on transmit 2011-04-04 22:30:30 -07:00
tcp_bic.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_cong.c
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tcp_cubic.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-03-15 15:15:17 -07:00
tcp_diag.c
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tcp_highspeed.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_htcp.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_hybla.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_illinois.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_input.c tcp: Make undo_ssthresh arg to tcp_undo_cwr() a bool. 2011-03-22 19:37:11 -07:00
tcp_ipv4.c ipv4: Make output route lookup return rtable directly. 2011-03-02 14:31:35 -08:00
tcp_lp.c Fix common misspellings 2011-03-31 11:26:23 -03:00
tcp_minisocks.c
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tcp_output.c Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
tcp_probe.c
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tcp_scalable.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_timer.c tcp: Remove debug macro of TCP_CHECK_TIMER 2011-02-20 11:10:14 -08:00
tcp_vegas.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_vegas.h
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tcp_veno.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_westwood.c tcp: mark tcp_congestion_ops read_mostly 2011-03-10 00:40:17 -08:00
tcp_yeah.c Fix common misspellings 2011-03-31 11:26:23 -03:00
tunnel4.c
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udp.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-04-11 13:44:25 -07:00
udp_impl.h
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udplite.c
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xfrm4_input.c
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xfrm4_mode_beet.c
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xfrm4_mode_transport.c
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xfrm4_mode_tunnel.c
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xfrm4_output.c
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xfrm4_policy.c ipv4: Fix "Set rt->rt_iif more sanely on output routes." 2011-04-07 14:04:08 -07:00
xfrm4_state.c net: Use flowi4 and flowi6 in xfrm layer. 2011-03-12 15:08:52 -08:00
xfrm4_tunnel.c
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