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Florian Westphal 1442e7507d netfilter: connlimit: use keyed locks 
connlimit currently suffers from spinlock contention, example for
4-core system with rps enabled:

+  20.84%   ksoftirqd/2  [kernel.kallsyms] [k] _raw_spin_lock_bh
+  20.76%   ksoftirqd/1  [kernel.kallsyms] [k] _raw_spin_lock_bh
+  20.42%   ksoftirqd/0  [kernel.kallsyms] [k] _raw_spin_lock_bh
+   6.07%   ksoftirqd/2  [nf_conntrack]    [k] ____nf_conntrack_find
+   6.07%   ksoftirqd/1  [nf_conntrack]    [k] ____nf_conntrack_find
+   5.97%   ksoftirqd/0  [nf_conntrack]    [k] ____nf_conntrack_find
+   2.47%   ksoftirqd/2  [nf_conntrack]    [k] hash_conntrack_raw
+   2.45%   ksoftirqd/0  [nf_conntrack]    [k] hash_conntrack_raw
+   2.44%   ksoftirqd/1  [nf_conntrack]    [k] hash_conntrack_raw

May allow parallel lookup/insert/delete if the entry is hashed to
another slot.  With patch:

+  20.95%  ksoftirqd/0  [nf_conntrack] [k] ____nf_conntrack_find
+  20.50%  ksoftirqd/1  [nf_conntrack] [k] ____nf_conntrack_find
+  20.27%  ksoftirqd/2  [nf_conntrack] [k] ____nf_conntrack_find
+   5.76%  ksoftirqd/1  [nf_conntrack] [k] hash_conntrack_raw
+   5.39%  ksoftirqd/2  [nf_conntrack] [k] hash_conntrack_raw
+   5.35%  ksoftirqd/0  [nf_conntrack] [k] hash_conntrack_raw
+   2.00%  ksoftirqd/1  [kernel.kallsyms] [k] __rcu_read_unlock

Improved rx processing rate from ~35kpps to ~50 kpps.

Reviewed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2014-03-17 11:11:49 +01:00
..
9p
9p/trans_virtio.c: Fix broken zero-copy on vmalloc() buffers
2014-02-10 17:48:54 -08:00
802
neigh: use NEIGH_VAR_INIT in ndo_neigh_setup functions.
2014-01-16 11:31:58 -08:00
8021q
net: introduce netdev_alloc_pcpu_stats() for drivers
2014-02-14 15:49:55 -05:00
appletalk
appletalk: fix checkpatch error with indent
2014-02-14 16:18:32 -05:00
atm
net: Fix some fallout from the etner_addr_copy() changes.
2014-01-21 18:57:26 -08:00
ax25
net: add build-time checks for msg->msg_name size
2014-01-18 23:04:16 -08:00
batman-adv
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-02-19 01:24:22 -05:00
bluetooth
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
2014-02-18 16:29:46 -08:00
bridge
net: introduce netdev_alloc_pcpu_stats() for drivers
2014-02-14 15:49:55 -05:00
caif
net: Include appropriate header file in caif/cfsrvl.c
2014-02-09 17:32:49 -08:00
can
linux-can-fixes-for-3.14-20140129
2014-01-30 16:48:17 -08:00
ceph
net: remove unnecessary return's
2014-02-13 18:33:38 -05:00
core
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-02-19 01:24:22 -05:00
dcb
dcb: use __dev_get_by_name instead of dev_get_by_name to find interface
2014-01-14 18:50:46 -08:00
dccp
dccp: re-enable debug macro
2014-02-16 23:45:00 -05:00
decnet
net: Move prototype declaration to header file include/net/dn.h from net/decnet/af_decnet.c
2014-02-09 17:32:49 -08:00
dns_resolver
net/*: Fix FSF address in file headers
2013-12-06 12:37:57 -05:00
dsa
dsa: Use ether_addr_copy
2014-01-21 18:13:05 -08:00
ethernet
net: eth_type_trans() should use skb_header_pointer()
2014-01-16 15:30:31 -08:00
hsr
hsr: Use ether_addr_copy
2014-02-18 18:14:09 -05:00
ieee802154
ieee802154: fix faulty check in set_phy_params api
2014-02-18 18:11:05 -05:00
ipv4
netfilter: remove double colon
2014-02-19 11:41:25 +01:00
ipv6
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-02-19 01:24:22 -05:00
ipx
ipx: implement shutdown()
2014-02-12 19:26:32 -05:00
irda
net: add build-time checks for msg->msg_name size
2014-01-18 23:04:16 -08:00
iucv
net: rework recvmsg handler msg_name and msg_namelen logic
2013-11-20 21:52:30 -05:00
key
xfrm: export verify_userspi_info for pkfey and netlink interface
2013-12-16 12:54:02 +01:00
l2tp
net: remove unnecessary return's
2014-02-13 18:33:38 -05:00
lapb
net/lapb: re-send packets on timeout
2013-09-23 16:52:45 -04:00
llc
llc: remove noisy WARN from llc_mac_hdr_init
2014-01-28 18:01:32 -08:00
mac80211
netdevice: add queue selection fallback handler for ndo_select_queue
2014-02-17 00:36:34 -05:00
mac802154
ieee802154: add netlink APIs for smartMAC configuration
2014-02-17 16:42:39 -05:00
mpls
ipip: add GSO/TSO support
2013-10-19 19:36:19 -04:00
netfilter
netfilter: connlimit: use keyed locks
2014-03-17 11:11:49 +01:00
netlabel
netlabel: Fix FSF address in file headers
2013-12-06 12:37:56 -05:00
netlink
netlink: fix checkpatch errors space and "foo *bar"
2014-02-17 16:57:28 -05:00
netrom
net: add build-time checks for msg->msg_name size
2014-01-18 23:04:16 -08:00
nfc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-01-25 11:17:34 -08:00
openvswitch
openvswitch: rename ->sync to ->syncp
2014-02-15 02:06:23 -05:00
packet
af_packet: remove a stray tab in packet_set_ring()
2014-02-18 18:02:25 -05:00
phonet
net: add build-time checks for msg->msg_name size
2014-01-18 23:04:16 -08:00
rds
net: add build-time checks for msg->msg_name size
2014-01-18 23:04:16 -08:00
rfkill
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-01-25 11:17:34 -08:00
rose
net: add build-time checks for msg->msg_name size
2014-01-18 23:04:16 -08:00
rxrpc
RxRPC fixes
2014-01-28 18:04:18 -08:00
sched
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-02-19 01:24:22 -05:00
sctp
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-02-19 01:24:22 -05:00
sunrpc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-02-11 12:05:55 -08:00
tipc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-02-19 01:24:22 -05:00
unix
net: add build-time checks for msg->msg_name size
2014-01-18 23:04:16 -08:00
vmw_vsock
net: add build-time checks for msg->msg_name size
2014-01-18 23:04:16 -08:00
wimax
wimax: remove dead code
2013-11-21 13:09:42 -05:00
wireless
net: remove unnecessary return's
2014-02-13 18:33:38 -05:00
x25
net: add build-time checks for msg->msg_name size
2014-01-18 23:04:16 -08:00
xfrm
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-01-25 11:17:34 -08:00
compat.c
x86, x32: Correct invalid use of user timespec in the kernel
2014-01-30 18:44:13 -08:00
Kconfig
net: netprio: rename config to be more consistent with cgroup configs
2014-01-03 23:41:42 +01:00
Makefile
net: move 6lowpan compression code to separate module
2014-01-15 15:36:38 -08:00
nonet.c
…
socket.c
socket: replace some printk with pr_*
2014-02-13 18:15:10 -05:00
sysctl_net.c
net: Update the sysctl permissions handler to test effective uid/gid
2013-10-07 15:57:56 -04:00