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linux/include/net/netfilter
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Sasha Levin b16c29191d netfilter: nf_conntrack: use safer way to lock all buckets 
When we need to lock all buckets in the connection hashtable we'd attempt to
lock 1024 spinlocks, which is way more preemption levels than supported by
the kernel. Furthermore, this behavior was hidden by checking if lockdep is
enabled, and if it was - use only 8 buckets(!).

Fix this by using a global lock and synchronize all buckets on it when we
need to lock them all. This is pretty heavyweight, but is only done when we
need to resize the hashtable, and that doesn't happen often enough (or at all).

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 		2016-01-20 14:15:31 +01:00
..
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.h netfilter: remove dead code 2015-10-05 17:32:01 +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: nf_conntrack: use safer way to lock all buckets 2016-01-20 14:15:31 +01:00
nf_conntrack_ecache.h netfilter: conntrack: remove timer from ecache extension 2014-06-25 19:15:38 +02:00
nf_conntrack_expect.h netfilter: nf_conntrack: push zone object into functions 2015-08-11 12:29:01 +02:00
nf_conntrack_extend.h netfilter: nf_conntrack: reserve two bytes for nf_ct_ext->len 2014-04-03 23:52:31 +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: nf_conntrack: Add a struct net parameter to l4_pkt_to_tuple 2015-09-18 22:00:04 +02:00
nf_conntrack_labels.h netfilter: connlabels: Export setting connlabel length 2015-08-27 11:40:43 -07:00
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: nf_conntrack: make nf_ct_zone_dflt built-in 2015-09-02 16:32:56 -07:00
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: restore rule tracing via nfnetlink_log 2015-03-19 11:14:48 +01:00
nf_nat.h netfilter: fix compilation of masquerading without IP_NF_TARGET_MASQUERADE 2014-09-11 17:02:45 +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_queue.h netfilter: make nf_queue_entry_get_refs return void 2015-10-16 18:22:23 +02:00
nf_tables.h netfilter: nf_tables: Add new attributes into nft_set to store user data. 2016-01-08 13:25:08 +01:00
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
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: nf_tables: restrict nat/masq expressions to nat chain type 2014-10-13 20:42:00 +02:00
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