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cd40b7d398
linux/net/netfilter
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Denis V. Lunev cd40b7d398 [NET]: make netlink user -> kernel interface synchronious 
This patch make processing netlink user -> kernel messages synchronious.
This change was inspired by the talk with Alexey Kuznetsov about current
netlink messages processing. He says that he was badly wrong when introduced 
asynchronious user -> kernel communication.

The call netlink_unicast is the only path to send message to the kernel
netlink socket. But, unfortunately, it is also used to send data to the
user.

Before this change the user message has been attached to the socket queue
and sk->sk_data_ready was called. The process has been blocked until all
pending messages were processed. The bad thing is that this processing
may occur in the arbitrary process context.

This patch changes nlk->data_ready callback to get 1 skb and force packet
processing right in the netlink_unicast.

Kernel -> user path in netlink_unicast remains untouched.

EINTR processing for in netlink_run_queue was changed. It forces rtnl_lock
drop, but the process remains in the cycle until the message will be fully
processed. So, there is no need to use this kludges now.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 21:15:29 -07:00
..
core.c [NET]: Make /proc/net per network namespace 2007-10-10 16:49:06 -07:00
Kconfig [NETFILTER]: x_tables: add xt_time match 2007-10-10 16:53:40 -07:00
Makefile [NETFILTER]: x_tables: add xt_time match 2007-10-10 16:53:40 -07:00
nf_conntrack_amanda.c [NETFILTER]: nf_conntrack: reduce masks to a subset of tuples 2007-07-10 22:17:55 -07:00
nf_conntrack_core.c [NETFILTER]: nf_conntrack: kill unique ID 2007-10-10 16:53:36 -07:00
nf_conntrack_ecache.c [NETFILTER]: nf_conntrack_expect: function naming unification 2007-07-10 22:17:53 -07:00
nf_conntrack_expect.c [NETFILTER]: Make netfilter code use the seq_open_private 2007-10-10 16:55:34 -07:00
nf_conntrack_extend.c [NETFILTER]: nf_conntrack: introduce extension infrastructure 2007-07-10 22:17:17 -07:00
nf_conntrack_ftp.c [NETFILTER]: Convert DEBUGP to pr_debug 2007-07-10 22:18:20 -07:00
nf_conntrack_h323_asn1.c [NETFILTER]: nf_conntrack_h323: check range first in sequence extension 2007-07-10 22:16:54 -07:00
nf_conntrack_h323_main.c [NETFILTER]: Convert DEBUGP to pr_debug 2007-07-10 22:18:20 -07:00
nf_conntrack_h323_types.c [NETFILTER]: nf_conntrack_h323: fix ASN.1 types 2007-05-24 16:42:26 -07:00
nf_conntrack_helper.c netfilter endian regressions 2007-07-26 11:11:56 -07:00
nf_conntrack_irc.c [NETFILTER]: Convert DEBUGP to pr_debug 2007-07-10 22:18:20 -07:00
nf_conntrack_l3proto_generic.c [NETFILTER]: nf_conntrack: mark protocols __read_mostly 2007-07-14 20:48:19 -07:00
nf_conntrack_netbios_ns.c [NETFILTER]: nf_conntrack: reduce masks to a subset of tuples 2007-07-10 22:17:55 -07:00
nf_conntrack_netlink.c [NETFILTER]: nf_conntrack_netlink: add support to related connections 2007-10-10 16:53:37 -07:00
nf_conntrack_pptp.c [NETFILTER]: Convert DEBUGP to pr_debug 2007-07-10 22:18:20 -07:00
nf_conntrack_proto_generic.c [NETFILTER]: nf_conntrack: mark protocols __read_mostly 2007-07-14 20:48:19 -07:00
nf_conntrack_proto_gre.c [NETFILTER]: ctnetlink: use netlink policy 2007-10-10 16:53:35 -07:00
nf_conntrack_proto_sctp.c [NETFILTER]: nf_conntrack: mark protocols __read_mostly 2007-07-14 20:48:19 -07:00
nf_conntrack_proto_tcp.c [NETFILTER]: ctnetlink: use netlink policy 2007-10-10 16:53:35 -07:00
nf_conntrack_proto_udp.c [NETFILTER]: ctnetlink: use netlink policy 2007-10-10 16:53:35 -07:00
nf_conntrack_proto_udplite.c [NETFILTER]: ctnetlink: use netlink policy 2007-10-10 16:53:35 -07:00
nf_conntrack_proto.c [NETLINK]: Possible cleanups. 2007-04-26 00:57:41 -07:00
nf_conntrack_sane.c [NETFILTER]: Convert DEBUGP to pr_debug 2007-07-10 22:18:20 -07:00
nf_conntrack_sip.c [NETFILTER]: nf_conntrack_sip: fix SIP-URI parsing 2007-08-14 13:14:35 -07:00
nf_conntrack_standalone.c [NETFILTER]: Make netfilter code use the seq_open_private 2007-10-10 16:55:34 -07:00
nf_conntrack_tftp.c [NETFILTER]: Convert DEBUGP to pr_debug 2007-07-10 22:18:20 -07:00
nf_internals.h [NETFILTER]: Fix whitespace errors 2007-02-12 11:15:49 -08:00
nf_log.c [NET] NETFILTER: Fix whitespace errors. 2007-07-19 10:44:21 +09:00
nf_queue.c [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
nf_sockopt.c [NET]: Disable netfilter sockopts when not in the initial network namespace 2007-10-10 16:49:13 -07:00
nf_sysctl.c [PATCH] sysctl: remove insert_at_head from register_sysctl 2007-02-14 08:09:59 -08:00
nfnetlink_log.c [NETFILTER]: Make netfilter code use the seq_open_private 2007-10-10 16:55:34 -07:00
nfnetlink_queue.c [NETFILTER]: Make netfilter code use the seq_open_private 2007-10-10 16:55:34 -07:00
nfnetlink.c [NET]: make netlink user -> kernel interface synchronious 2007-10-10 21:15:29 -07:00
x_tables.c [NET]: Make /proc/net per network namespace 2007-10-10 16:49:06 -07:00
xt_CLASSIFY.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_comment.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_connbytes.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_connlimit.c netfilter endian regressions 2007-07-26 11:11:56 -07:00
xt_connmark.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_CONNMARK.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_CONNSECMARK.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_conntrack.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_dccp.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_dscp.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_DSCP.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_esp.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_hashlimit.c [NET]: Make /proc/net per network namespace 2007-10-10 16:49:06 -07:00
xt_helper.c [NETFILTER]: xt_helper: use RCU 2007-07-10 22:18:19 -07:00
xt_length.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_limit.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_mac.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_mark.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_MARK.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_multiport.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_NFLOG.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_NFQUEUE.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_NOTRACK.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_physdev.c [NETFILTER]: Clean up duplicate includes in net/netfilter/ 2007-07-24 15:31:05 -07:00
xt_pkttype.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_policy.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_quota.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_realm.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_sctp.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_SECMARK.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_state.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_statistic.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_string.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_tcpmss.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_TCPMSS.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_tcpudp.c [NETFILTER]: xt_tcpudp: fix wrong struct in udp_checkentry 2007-08-30 22:36:43 -07:00
xt_time.c [NETFILTER]: x_tables: add xt_time match 2007-10-10 16:53:40 -07:00
xt_TRACE.c [NETFILTER]: x_tables: mark matches and targets __read_mostly 2007-07-10 22:17:15 -07:00
xt_u32.c [NETFILTER]: netfilter: xt_u32 bug correction 2007-08-14 13:13:28 -07:00