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1d45209d89
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Eric Dumazet 1d45209d89 netfilter: nf_conntrack: Reduce conntrack count in nf_conntrack_free() 
We use RCU to defer freeing of conntrack structures. In DOS situation, RCU might
accumulate about 10.000 elements per CPU in its internal queues. To get accurate
conntrack counts (at the expense of slightly more RAM used), we might consider
conntrack counter not taking into account "about to be freed elements, waiting
in RCU queues". We thus decrement it in nf_conntrack_free(), not in the RCU
callback.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Tested-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-03-24 14:26:50 +01:00
..
9p 9p: fix endian issues [attempt 3] 2009-02-06 22:07:41 -08:00
802 net: replace uses of __constant_{endian} 2009-02-01 00:45:17 -08:00
8021q gro: Optimise Ethernet header comparison 2009-02-08 20:22:18 -08:00
appletalk net: replace uses of __constant_{endian} 2009-02-01 00:45:17 -08:00
atm lec: convert to net_device_ops 2009-01-21 14:02:00 -08:00
ax25 ax25: more common return path joining 2009-02-06 23:47:14 -08:00
bluetooth bluetooth: driver API update 2009-01-07 17:23:17 -08:00
bridge netfilter: ebtables: remove unneeded initializations 2009-02-18 16:30:38 +01:00
can ip: support for TX timestamps on UDP and RAW sockets 2009-02-15 22:43:38 -08:00
core net: pass new SIOCSHWTSTAMP through to device drivers 2009-02-15 22:43:38 -08:00
dcb DCB: fix kfree(skb) 2009-01-04 17:29:21 -08:00
dccp dccp: Debugging functions for feature negotiation 2009-01-21 14:34:05 -08:00
decnet net: replace uses of __constant_{endian} 2009-02-01 00:45:17 -08:00
dsa net: replace uses of __constant_{endian} 2009-02-01 00:45:17 -08:00
econet net: replace uses of __constant_{endian} 2009-02-01 00:45:17 -08:00
ethernet eth: Declare an optimized compare_ether_addr_64bits() function 2008-11-23 23:24:32 -08:00
ipv4 netfilter: auto-load ip_queue module when socket opened 2009-03-16 15:31:10 +01:00
ipv6 netfilter: auto-load ip6_queue module when socket opened 2009-03-16 15:30:14 +01:00
ipx net: replace uses of __constant_{endian} 2009-02-01 00:45:17 -08:00
irda net: replace uses of __constant_{endian} 2009-02-01 00:45:17 -08:00
iucv s390: remove s390_root_dev_*() 2009-01-06 10:44:34 -08:00
key af_key: initialize xfrm encap_oa 2009-01-25 20:49:14 -08:00
lapb [LAPB] net/lapb/lapb_iface.c: use LIST_HEAD instead of LIST_HEAD_INIT 2008-01-28 14:56:52 -08:00
llc net: replace uses of __constant_{endian} 2009-02-01 00:45:17 -08:00
mac80211 Merge branch 'master' of /home/davem/src/GIT/linux-2.6/ 2009-02-14 23:12:00 -08:00
netfilter netfilter: nf_conntrack: Reduce conntrack count in nf_conntrack_free() 2009-03-24 14:26:50 +01:00
netlabel netlabel: Update kernel configuration API 2008-12-31 12:54:11 -05:00
netlink nefilter: nfnetlink: add nfnetlink_set_err and use it in ctnetlink 2009-03-23 13:21:06 +01:00
netrom netrom: convert to net_device_ops 2009-01-21 14:02:02 -08:00
packet net: packet socket packet_lookup_frame fix 2009-02-01 01:53:29 -08:00
phonet Merge branch 'master' of /home/davem/src/GIT/linux-2.6/ 2009-02-14 23:12:00 -08:00
rfkill net/rfkill/rfkill.c: fix unused rfkill_led_trigger() warning 2009-01-04 17:11:24 -08:00
rose rose: convert to network_device_ops 2009-01-21 14:02:04 -08:00
rxrpc RxRPC: Fix a potential NULL dereference 2009-02-06 21:50:52 -08:00
sched pkt_sched: sch_multiq: Change errno on non-multiqueue devices use. 2009-02-10 00:11:21 -08:00
sctp sctp: Inherit all socket options from parent correctly. 2009-02-16 00:03:11 -08:00
sunrpc net/sunrpc/xprtsock.c: some common code found 2009-02-06 23:48:33 -08:00
tipc net/tipc/bcast.h: use ARRAY_SIZE 2009-01-11 00:06:33 -08:00
unix introduce new LSM hooks where vfsmount is available. 2008-12-31 18:07:37 -05:00
wanrouter netdevice wanrouter: Convert directly reference of netdev->priv 2008-11-20 04:26:21 -08:00
wimax Merge branch 'master' of /home/davem/src/GIT/linux-2.6/ 2009-02-14 23:12:00 -08:00
wireless cfg80211: add more flexible BSS lookup 2009-02-13 13:45:56 -05:00
x25 net: replace uses of __constant_{endian} 2009-02-01 00:45:17 -08:00
xfrm Revert "xfrm: For 32/64 compatability wrt. xfrm_usersa_info" 2009-01-20 09:49:51 -08:00
compat.c net: socket infrastructure for SO_TIMESTAMPING 2009-02-15 22:43:35 -08:00
Kconfig Phonet: move to Networking options like other protocol stacks 2009-01-26 21:03:33 -08:00
Makefile wimax: Makefile, Kconfig and docbook linkage for the stack 2009-01-07 10:00:17 -08:00
nonet.c
socket.c net: socket infrastructure for SO_TIMESTAMPING 2009-02-15 22:43:35 -08:00
sysctl_net.c net: sysctl_net - use net_eq to compare nets 2009-03-16 16:23:30 +01:00
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