Eric Dumazet 8d3f099abe [IPV4] FIB_HASH : Avoid unecessary loop in fn_hash_dump_zone() ...

I noticed "ip route list" was slower than "cat /proc/net/route" on a
machine with a full Internet routing table (214392 entries : Special
thanks to Robert ;) )

This is similar to problem reported in commit
d8c9283089287341c85a0a69de32c2287a990e71 ("[IPV4] ROUTE: ip_rt_dump()
is unecessary slow")

Fix is to avoid scanning the begining of fz_hash table, but directly
seek to the right offset.

Before patch :

time ip route >/tmp/ROUTE

real    0m1.285s
user    0m0.712s
sys     0m0.436s

After patch

# time ip route >/tmp/ROUTE

real    0m0.835s
user    0m0.692s
sys     0m0.124s

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2008-01-20 20:31:39 -08:00

..

ipvs

[IPVS]: Fix sched registration race when checking for name collision.

2007-12-05 05:37:27 -08:00

netfilter

[NETFILTER]: nf_conntrack_ipv4: fix module parameter compatibility

2007-12-26 19:36:33 -08:00

af_inet.c

[NET]: Forget the zero_it argument of sk_alloc()

2007-11-01 00:39:31 -07:00

ah4.c

cleanup asm/scatterlist.h includes

2007-11-02 08:47:06 +01:00

arp.c

[IPV4] ARP: Remove not used code

2007-12-19 23:38:11 -08:00

cipso_ipv4.c

[NetLabel]: correct usage of RCU locking

2007-10-26 04:29:08 -07:00

datagram.c

[IPV4]: Fix "ipOutNoRoutes" counter error for TCP and UDP

2007-06-03 18:08:50 -07:00

devinet.c

[INET]: Fix netdev renaming and inet address labels

2008-01-04 03:55:34 -08:00

esp4.c

[IPv4] ESP: Discard dummy packets introduced in rfc4303

2007-12-11 02:45:26 -08:00

fib_frontend.c

[IPV4]: OOPS with NETLINK_FIB_LOOKUP netlink socket

2007-12-21 02:01:53 -08:00

fib_hash.c

[IPV4] FIB_HASH : Avoid unecessary loop in fn_hash_dump_zone()

2008-01-20 20:31:39 -08:00

fib_lookup.h

[RTNETLINK]: Fix sending netlink message when replace route.

2007-05-24 16:36:53 -07:00

fib_rules.c

[INET]: Small possible memory leak in FIB rules

2007-11-10 22:12:03 -08:00

fib_semantics.c

[NETLINK]: Introduce nested and byteorder flag to netlink attribute

2007-10-10 16:49:16 -07:00

fib_trie.c

[IPV4] fib_trie: fix duplicated route issue

2008-01-20 20:31:38 -08:00

icmp.c

[INET]: Unexport icmpmsg_statistics

2007-10-26 04:06:08 -07:00

igmp.c

[NET]: Make core networking code use seq_open_private

2007-10-10 16:55:33 -07:00

inet_connection_sock.c

[INET]: Justification for local port range robustness.

2007-10-18 22:00:17 -07:00

inet_diag.c

[INET]: Fix inet_diag dead-lock regression

2007-12-03 15:51:25 +11:00

inet_fragment.c

[INET]: Consolidate frag queues freeing

2007-10-17 19:48:26 -07:00

inet_hashtables.c

[INET]: Remove per bucket rwlock in tcp/dccp ehash table.

2007-11-07 04:15:11 -08:00

inet_lro.c

[LRO] Fix lro_mgr->features checks

2008-01-08 23:30:18 -08:00

inet_timewait_sock.c

[INET]: Remove per bucket rwlock in tcp/dccp ehash table.

2007-11-07 04:15:11 -08:00

inetpeer.c

[INET]: Use list_head-s in inetpeer.c

2007-11-12 21:27:28 -08:00

ip_forward.c

[IPV4]: Uninline netfilter okfns

2007-10-15 12:26:35 -07:00

ip_fragment.c

[NET]: Fix uninitialised variable in ip_frag_reasm()

2007-10-17 21:37:22 -07:00

ip_gre.c

[IPV4] ip_gre: set mac_header correctly in receive path

2007-12-20 00:10:33 -08:00

ip_input.c

[IPV4]: Uninline netfilter okfns

2007-10-15 12:26:35 -07:00

ip_options.c

[IPV4] ip_options.c: kmalloc + memset conversion to kzalloc

2007-07-31 14:06:45 -07:00

ip_output.c

[IPV4]: Consolidate the ip cork destruction in ip_output.c

2007-11-07 04:08:25 -08:00

ip_sockglue.c

[IPV4]: Clean the ip_sockglue.c from some ugly ifdefs

2007-11-07 04:08:55 -08:00

ipcomp.c

[IPSEC]: Fix crypto_alloc_comp error checking

2007-11-07 04:15:03 -08:00

ipconfig.c

[IPV4] ipconfig: Fix regression in ip command line processing

2008-01-08 23:29:58 -08:00

ipip.c

[NET]: Treat the sign of the result of skb_headroom() consistently

2007-10-23 21:27:55 -07:00

ipmr.c

[NET]: Make core networking code use seq_open_private

2007-10-10 16:55:33 -07:00

Kconfig

typo fixes

2007-10-20 01:34:40 +02:00

Makefile

[INET]: Collect frag queues management objects together

2007-10-15 12:26:39 -07:00

netfilter.c

[NETFILTER]: Replace sk_buff ** with sk_buff *

2007-10-15 12:26:29 -07:00

proc.c

[NET]: Define infrastructure to keep 'inuse' changes in an efficent SMP/NUMA way.

2007-11-07 04:08:57 -08:00

protocol.c

[IPV4]: align inet_protos[] on SMP

2007-04-25 22:28:20 -07:00

raw.c

[IPV4] raw: Strengthen check on validity of iph->ihl

2008-01-08 23:29:57 -08:00

route.c

[IPV4] ROUTE: fix rcu_dereference() uses in /proc/net/rt_cache

2008-01-10 03:55:57 -08:00

syncookies.c

[SK_BUFF]: Introduce tcp_hdr(), remove skb->h.th

2007-04-25 22:25:26 -07:00

sysctl_net_ipv4.c

[TCP]: Problem bug with sysctl_tcp_congestion_control function

2007-11-19 23:28:21 -08:00

tcp_bic.c

[TCP]: Remove num_acked>0 checks from cong.ctrl mods pkts_acked

2007-10-10 16:47:55 -07:00

tcp_cong.c

[TCP]: remove unused argument to cong_avoid op

2007-07-18 01:46:58 -07:00

tcp_cubic.c

[TCP]: Remove num_acked>0 checks from cong.ctrl mods pkts_acked

2007-10-10 16:47:55 -07:00

tcp_diag.c

[INET]: Let inet_diag and friends autoload

2007-10-22 02:59:54 -07:00

tcp_highspeed.c

[TCP]: remove unused argument to cong_avoid op

2007-07-18 01:46:58 -07:00

tcp_htcp.c

[TCP]: H-TCP maxRTT estimation at startup

2007-08-07 18:29:05 -07:00

tcp_hybla.c

[TCP]: remove unused argument to cong_avoid op

2007-07-18 01:46:58 -07:00

tcp_illinois.c

[TCP] illinois: Incorrect beta usage

2007-11-30 01:10:55 +11:00

tcp_input.c

[TCP]: use non-delayed ACK for congestion control RTT

2007-12-29 19:11:21 -08:00

tcp_ipv4.c

[IPV4] TCPMD5: Use memmove() instead of memcpy() because we have overlaps.

2007-11-20 17:30:31 -08:00

tcp_lp.c

[TCP]: congestion control API pass RTT in microseconds

2007-07-31 02:27:57 -07:00

tcp_minisocks.c

[TCP]: Move sack_ok access to obviously named funcs & cleanup

2007-10-10 16:48:00 -07:00

tcp_output.c

[TCP]: NAGLE_PUSH seems to be a wrong way around

2007-12-05 05:37:31 -08:00

tcp_probe.c

[NET]: Make /proc/net per network namespace

2007-10-10 16:49:06 -07:00

tcp_scalable.c

[TCP]: remove unused argument to cong_avoid op

2007-07-18 01:46:58 -07:00

tcp_timer.c

[TCP]: Move sack_ok access to obviously named funcs & cleanup

2007-10-10 16:48:00 -07:00

tcp_vegas.c

[TCP] vegas: Fix a bug in disabling slow start by gamma parameter.

2007-10-29 22:37:25 -07:00

tcp_vegas.h

[TCP]: congestion control API pass RTT in microseconds

2007-07-31 02:27:57 -07:00

tcp_veno.c

[TCP]: congestion control API pass RTT in microseconds

2007-07-31 02:27:57 -07:00

tcp_westwood.c

[TCP]: congestion control API pass RTT in microseconds

2007-07-31 02:27:57 -07:00

tcp_yeah.c

[TCP]: congestion control API pass RTT in microseconds

2007-07-31 02:27:57 -07:00

tcp.c

[INET]: Remove per bucket rwlock in tcp/dccp ehash table.

2007-11-07 04:15:11 -08:00

tunnel4.c

[INET]: Cleanup the xfrm4_tunnel_(un)register

2007-11-10 21:48:54 -08:00

udp_impl.h

[UDP]: Randomize port selection.

2007-10-10 16:48:31 -07:00

udp.c

[IPV4]: Use the {DEFINE|REF}_PROTO_INUSE infrastructure

2007-11-07 04:08:58 -08:00

udplite.c

[IPV4]: Use the {DEFINE|REF}_PROTO_INUSE infrastructure

2007-11-07 04:08:58 -08:00

xfrm4_input.c

[IPSEC]: Rename mode to outer_mode and add inner_mode

2007-10-17 21:35:51 -07:00

xfrm4_mode_beet.c

[IPSEC]: Add missing BEET checks

2007-10-17 21:31:50 -07:00

xfrm4_mode_transport.c

[IPSEC]: Use IPv6 calling convention as the convention for x->mode->output

2007-10-10 16:55:54 -07:00

xfrm4_mode_tunnel.c

[IPSEC]: Add missing BEET checks

2007-10-17 21:31:50 -07:00

xfrm4_output.c

[IPSEC]: Rename mode to outer_mode and add inner_mode

2007-10-17 21:35:51 -07:00

xfrm4_policy.c

[IPSEC]: Rename mode to outer_mode and add inner_mode

2007-10-17 21:35:51 -07:00

xfrm4_state.c

[IPSEC]: Store afinfo pointer in xfrm_mode

2007-10-17 21:33:12 -07:00

xfrm4_tunnel.c

[IPSEC]: Move tunnel parsing for IPv4 out of xfrm4_input

2007-10-17 21:28:53 -07:00