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3183ab8997
linux/include/net/netfilter
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Florian Westphal 3183ab8997 netfilter: conntrack: allow increasing bucket size via sysctl too 
No need to restrict this to module parameter.

We export a copy of the real hash size -- when user alters the value we
allocate the new table, copy entries etc before we update the real size
to the requested one.

This is also needed because the real size is used by concurrent readers
and cannot be changed without synchronizing the conntrack generation
seqcnt.

We only allow changing this value from the initial net namespace.

Tested using http-client-benchmark vs. httpterm with concurrent

while true;do
 echo $RANDOM > /proc/sys/net/netfilter/nf_conntrack_buckets
done

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2016-06-24 11:03:28 +02:00
..
ipv4 ipv4: Push struct net down into nf_send_reset 2015-09-29 20:21:31 +02:00
ipv6 netfilter: ipv6: avoid nf_iterate recursion 2015-11-23 17:54:45 +01:00
br_netfilter.h bridge: Pass net into br_validate_ipv4 and br_validate_ipv6 2015-09-29 20:21:32 +02:00
nf_conntrack_acct.h netfilter: introduce nf_conn_acct structure 2013-11-03 21:48:49 +01:00
nf_conntrack_core.h netfilter: conntrack: use a single hashtable for all namespaces 2016-05-05 16:39:47 +02:00
nf_conntrack_ecache.h netfilter: conntrack: move expectation event helper to ecache.c 2016-04-12 23:01:57 +02:00
nf_conntrack_expect.h netfilter: conntrack: use a single expectation table for all namespaces 2016-05-06 11:50:01 +02:00
nf_conntrack_extend.h netfilter: move zone info into struct nf_conn 2016-06-23 13:33:12 +02:00
nf_conntrack_helper.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_conntrack_l3proto.h netfilter: Convert print_tuple functions to return void 2014-11-05 14:10:33 -05:00
nf_conntrack_l4proto.h netfilter: conntrack: introduce clash resolution on insertion race 2016-05-05 16:39:50 +02:00
nf_conntrack_labels.h netfilter: connlabels: change nf_connlabels_get bit arg to 'highest used' 2016-04-18 20:39:48 +02:00
nf_conntrack_seqadj.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_conntrack_synproxy.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-10-01 17:06:14 -04:00
nf_conntrack_timeout.h netfilter: cttimeout: add netns support 2015-12-14 12:48:58 +01:00
nf_conntrack_timestamp.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_conntrack_tuple.h netfilter: nf_nat: export NAT definitions to userspace 2011-12-23 14:36:43 +01:00
nf_conntrack_zones.h netfilter: move zone info into struct nf_conn 2016-06-23 13:33:12 +02:00
nf_conntrack.h netfilter: conntrack: allow increasing bucket size via sysctl too 2016-06-24 11:03:28 +02:00
nf_dup_netdev.h netfilter: nf_tables: add packet duplication to the netdev family 2016-01-03 21:04:23 +01:00
nf_log.h netfilter: xt_NFLOG: nflog-range does not truncate packets 2016-06-24 11:03:23 +02:00
nf_nat_core.h netfilter: Pass net into nf_xfrm_me_harder 2015-09-18 22:00:22 +02:00
nf_nat_helper.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_nat_l3proto.h netfilter: Pass priv instead of nf_hook_ops to netfilter hooks 2015-09-18 22:00:16 +02:00
nf_nat_l4proto.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00
nf_nat_redirect.h netfilter: combine IPv4 and IPv6 nf_nat_redirect code in one module 2014-11-27 13:08:42 +01:00
nf_nat.h netfilter: fix compilation of masquerading without IP_NF_TARGET_MASQUERADE 2014-09-11 17:02:45 +02:00
nf_queue.h netfilter: make nf_queue_entry_get_refs return void 2015-10-16 18:22:23 +02:00
nf_tables_bridge.h netfilter: nf_tables_bridge: export nft_reject_ip*hdr_validate functions 2014-11-27 12:58:05 +01:00
nf_tables_core.h netfilter: nf_tables: wrap tracing with a static key 2015-12-09 13:23:13 +01:00
nf_tables_ipv4.h netfilter: nf_tables: kill nft_pktinfo.ops 2015-09-18 21:58:01 +02:00
nf_tables_ipv6.h netfilter: nf_tables: kill nft_pktinfo.ops 2015-09-18 21:58:01 +02:00
nf_tables.h netfilter: nf_tables: add generation mask to sets 2016-06-24 11:03:26 +02:00
nfnetlink_log.h netfilter: log: netns NULL ptr bug when calling from conntrack 2013-05-15 14:11:07 +02:00
nft_dup.h netfilter: nf_tables: add nft_dup expression 2015-08-07 11:49:49 +02:00
nft_masq.h netfilter: nft_masq: support port range 2016-03-02 20:05:27 +01:00
nft_meta.h netfilter: nf_tables: wrap tracing with a static key 2015-12-09 13:23:13 +01:00
nft_redir.h netfilter: nf_tables: add new expression nft_redir 2014-10-27 22:49:39 +01:00
nft_reject.h netfilter: nft_reject: introduce icmp code abstraction for inet and bridge 2014-10-02 18:29:57 +02:00
xt_rateest.h netfilter: Remove extern from function prototypes 2013-09-23 16:29:42 -04:00