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linux/net/bridge
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Eric Dumazet e67f88dd12 net: dont hold rtnl mutex during netlink dump callbacks 
Four years ago, Patrick made a change to hold rtnl mutex during netlink
dump callbacks.

I believe it was a wrong move. This slows down concurrent dumps, making
good old /proc/net/ files faster than rtnetlink in some situations.

This occurred to me because one "ip link show dev ..." was _very_ slow
on a workload adding/removing network devices in background.

All dump callbacks are able to use RCU locking now, so this patch does
roughly a revert of commits :

1c2d670f36 : [RTNETLINK]: Hold rtnl_mutex during netlink dump callbacks
6313c1e099 : [RTNETLINK]: Remove unnecessary locking in dump callbacks

This let writers fight for rtnl mutex and readers going full speed.

It also takes care of phonet : phonet_route_get() is now called from rcu
read section. I renamed it to phonet_route_get_rcu()

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Remi Denis-Courmont <remi.denis-courmont@nokia.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-02 15:26:28 -07:00
..
netfilter bridge: netfilter: fix information leak 2011-02-14 16:49:23 +01:00
br_device.c bridge: convert br_features_recompute() to ndo_fix_features 2011-04-28 13:33:08 -07:00
br_fdb.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-04-11 13:44:25 -07:00
br_forward.c net: bridge: check the length of skb after nf_bridge_maybe_copy_header() 2011-01-06 11:33:05 -08:00
br_if.c ethtool: Use full 32 bit speed range in ethtool's set_settings 2011-04-29 14:03:00 -07:00
br_input.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-04-26 12:16:46 -07:00
br_ioctl.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-04-11 13:44:25 -07:00
br_multicast.c inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
br_netfilter.c inet: constify ip headers and in6_addr 2011-04-22 11:04:14 -07:00
br_netlink.c net: dont hold rtnl mutex during netlink dump callbacks 2011-05-02 15:26:28 -07:00
br_notify.c bridge: convert br_features_recompute() to ndo_fix_features 2011-04-28 13:33:08 -07:00
br_private_stp.h bridge: range check STP parameters 2011-04-04 17:22:29 -07:00
br_private.h bridge: convert br_features_recompute() to ndo_fix_features 2011-04-28 13:33:08 -07:00
br_stp_bpdu.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-01-04 11:57:25 -08:00
br_stp_if.c bridge: range check STP parameters 2011-04-04 17:22:29 -07:00
br_stp_timer.c bridge: control carrier based on ports online 2011-03-14 14:29:02 -07:00
br_stp.c bridge: range check STP parameters 2011-04-04 17:22:29 -07:00
br_sysfs_br.c bridge: range check STP parameters 2011-04-04 17:22:29 -07:00
br_sysfs_if.c bridge: range check STP parameters 2011-04-04 17:22:29 -07:00
br.c bridge: allow creating bridge devices with netlink 2011-04-04 17:22:28 -07:00
Kconfig net: bridge builtin vs. ipv6 modular 2011-03-10 13:45:57 -08:00
Makefile