kernel-ark

History

Eric Dumazet 54764bb647 ipv4: Restore old dst_free() behavior. commit `404e0a8b6a` (net: ipv4: fix RCU races on dst refcounts) tried to solve a race but added a problem at device/fib dismantle time : We really want to call dst_free() as soon as possible, even if sockets still have dst in their cache. dst_release() calls in free_fib_info_rcu() are not welcomed. Root of the problem was that now we also cache output routes (in nh_rth_output), we must use call_rcu() instead of call_rcu_bh() in rt_free(), because output route lookups are done in process context. Based on feedback and initial patch from David Miller (adding another call_rcu_bh() call in fib, but it appears it was not the right fix) I left the inet_sk_rx_dst_set() helper and added __rcu attributes to nh_rth_output and nh_rth_input to better document what is going on in this code. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-07-31 14:41:38 -07:00
..
netfilter	netlink: add netlink_kernel_cfg parameter to netlink_kernel_create	2012-06-29 16:46:02 -07:00
af_decnet.c	net: cleanup unsigned to unsigned int	2012-04-15 12:44:40 -04:00
dn_dev.c	net decnet: Convert to use register_net_sysctl	2012-04-20 21:22:29 -04:00
dn_fib.c	netlink: Get rid of obsolete rtnetlink macros	2012-06-27 15:36:44 -07:00
dn_neigh.c	decnet: Use neighbours privately in dn_route struct.	2012-07-05 01:12:14 -07:00
dn_nsp_in.c	net: Convert net_ratelimit uses to net_<level>_ratelimited	2012-05-15 13:45:03 -04:00
dn_nsp_out.c	net: Remove casts to same type	2012-06-04 11:45:11 -04:00
dn_route.c	ipv4: Restore old dst_free() behavior.	2012-07-31 14:41:38 -07:00
dn_rules.c	net: cleanup unsigned to unsigned int	2012-04-15 12:44:40 -04:00
dn_table.c	decnet: Do not use RTA_PUT() macros	2012-06-27 15:36:44 -07:00
dn_timer.c	decnet: proper socket refcounting	2011-11-26 15:49:07 -05:00
Kconfig
Makefile
README
sysctl_net_decnet.c	net decnet: Convert to use register_net_sysctl	2012-04-20 21:22:29 -04:00
TODO

README

                       Linux DECnet Project
                      ======================

The documentation for this kernel subsystem is available in the
Documentation/networking subdirectory of this distribution and also
on line at http://www.chygwyn.com/DECnet/

Steve Whitehouse <SteveW@ACM.org>