Michal Kubeček ba310bc86f ipv6: prevent fib6_run_gc() contention ... commit 2ac3ac8f86 upstream. On a high-traffic router with many processors and many IPv6 dst entries, soft lockup in fib6_run_gc() can occur when number of entries reaches gc_thresh. This happens because fib6_run_gc() uses fib6_gc_lock to allow only one thread to run the garbage collector but ip6_dst_gc() doesn't update net->ipv6.ip6_rt_last_gc until fib6_run_gc() returns. On a system with many entries, this can take some time so that in the meantime, other threads pass the tests in ip6_dst_gc() (ip6_rt_last_gc is still not updated) and wait for the lock. They then have to run the garbage collector one after another which blocks them for quite long. Resolve this by replacing special value ~0UL of expire parameter to fib6_run_gc() by explicit "force" parameter to choose between spin_lock_bh() and spin_trylock_bh() and call fib6_run_gc() with force=false if gc_thresh is reached but not max_size. Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2015-07-03 19:48:09 -07:00
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9p
bluetooth	Bluetooth: Introduce a new HCI_RFKILLED flag	2013-10-13 16:08:32 -07:00
caif	caif: Remove my bouncing email address.	2013-04-23 13:25:51 -04:00
irda	irda: small read past the end of array in debug code	2013-04-19 17:32:31 -04:00
iucv	af_iucv: fix recvmsg by replacing skb_pull() function	2013-04-08 17:16:57 -04:00
netfilter	netfilter: nf_conntrack: reserve two bytes for nf_ct_ext->len	2014-05-30 21:52:11 -07:00
netns	ipv4: tcp: get rid of ugly unicast_sock	2015-02-26 17:48:48 -08:00
nfc	NFC: RFKILL support	2013-04-12 16:54:45 +02:00
phonet
sctp	net: sctp: fix skb_over_panic when receiving malformed ASCONF chunks	2014-11-21 09:22:55 -08:00
tc_act
act_api.h
addrconf.h	IPv6 NAT: Do not drop DNATed 6to4/6rd packets	2013-10-13 16:08:30 -07:00
af_ieee802154.h
af_rxrpc.h
af_unix.h	af_unix: fix a fatal race with bit fields	2013-05-01 15:13:49 -04:00
ah.h
arp.h
atmclip.h
ax25.h
ax88796.h
cfg80211-wext.h
cfg80211.h	cfg80211: introduce critical protocol indication from user-space	2013-04-22 15:48:00 +02:00
checksum.h
cipso_ipv4.h	net: fix cipso packet validation when !NETLABEL	2013-11-04 04:31:04 -08:00
cls_cgroup.h	cls_cgroup: remove task_struct parameter from sock_update_classid()	2013-04-09 13:19:35 -04:00
codel.h
compat.h
datalink.h
dcbevent.h
dcbnl.h
dn_dev.h
dn_fib.h	decnet: Parse netlink attributes on our own	2013-03-22 10:31:16 -04:00
dn_neigh.h
dn_nsp.h
dn_route.h
dn.h
dsa.h
dsfield.h
dst_ops.h
dst.h	net: dst: provide accessor function to dst->xfrm	2013-11-04 04:31:03 -08:00
esp.h
ethoc.h
fib_rules.h
firewire.h	firewire net, ipv4 arp: Extend hardware address and remove driver-level packet inspection.	2013-03-26 12:32:13 -04:00
flow_keys.h	flow_keys: include thoff into flow_keys for later usage	2013-03-20 12:14:36 -04:00
flow.h
garp.h
gen_stats.h
genetlink.h	genl: Hold reference on correct module while netlink-dump.	2013-09-14 06:54:55 -07:00
gre.h	GRE: Refactor GRE tunneling code.	2013-03-26 12:27:18 -04:00
gro_cells.h
icmp.h
ieee80211_radiotap.h
ieee802154_netdev.h	ieee802154/nl-mac.c: make some MLME operations optional	2013-04-08 12:00:16 -04:00
ieee802154.h
if_inet6.h	net: ipv6: only invalidate previously tokenized addresses	2013-04-09 13:12:23 -04:00
inet_common.h
inet_connection_sock.h	tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced()	2014-10-15 08:31:56 +02:00
inet_ecn.h
inet_frag.h	net: frag, fix race conditions in LRU list maintenance	2013-05-06 11:06:51 -04:00
inet_hashtables.h
inet_sock.h
inet_timewait_sock.h
inet6_connection_sock.h
inet6_hashtables.h
inetpeer.h	inetpeer: get rid of ip_id_count	2014-08-14 09:24:15 +08:00
ip_fib.h	ipv4: fix definition of FIB_TABLE_HASHSZ	2013-03-13 10:47:09 -04:00
ip_tunnels.h	ip_gre: Fix WCCPv2 header parsing.	2013-11-20 12:27:46 -08:00
ip_vs.h	netfilter: push reasm skb through instead of original frag skbs	2013-12-08 07:29:25 -08:00
ip.h	ipv4: tcp: get rid of ugly unicast_sock	2015-02-26 17:48:48 -08:00
ip6_checksum.h
ip6_fib.h	ipv6: prevent fib6_run_gc() contention	2015-07-03 19:48:09 -07:00
ip6_route.h	ipv6: Limit mtu to 65575 bytes	2014-05-30 21:52:14 -07:00
ip6_tunnel.h	GRE: Refactor GRE tunneling code.	2013-03-26 12:27:18 -04:00
ipcomp.h
ipconfig.h
ipv6.h	inetpeer: get rid of ip_id_count	2014-08-14 09:24:15 +08:00
ipx.h
iw_handler.h
lapb.h
lib80211.h	hostap: Don't use create_proc_read_entry()	2013-04-29 15:41:56 -04:00
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h
llc_if.h
llc_pdu.h
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
llc.h
mac80211.h	mac80211: add a flag to indicate CCK support for HT clients	2013-09-07 22:09:59 -07:00
mac802154.h
mip6.h
mld.h
mrp.h
ndisc.h	ndisc: Add missing inline to ndisc_addr_option_pad	2013-08-11 18:35:26 -07:00
neighbour.h
net_namespace.h	netfilter: make /proc/net/netfilter pernet	2013-04-05 19:35:02 +02:00
net_ratelimit.h
netdma.h
netevent.h
netlabel.h
netlink.h
netprio_cgroup.h	netprio_cgroup: remove task_struct parameter from sock_update_netprio()	2013-04-09 13:19:37 -04:00
netrom.h
nexthop.h
nl802154.h
p8022.h
ping.h
pkt_cls.h
pkt_sched.h
protocol.h
psnap.h
raw.h
rawv6.h
red.h
regulatory.h
request_sock.h	net: remove a stale comment for dl_next	2013-04-22 15:55:48 -04:00
rose.h
route.h
rtnetlink.h	rtnetlink: Remove passing of attributes into rtnl_doit functions	2013-03-22 10:31:16 -04:00
sch_generic.h	net_sched: restore "linklayer atm" handling	2013-09-14 06:54:55 -07:00
scm.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-04-22 20:32:51 -04:00
secure_seq.h	inetpeer: get rid of ip_id_count	2014-08-14 09:24:15 +08:00
slhc_vj.h
snmp.h
sock.h	tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced()	2014-10-15 08:31:56 +02:00
stp.h
tcp_memcontrol.h
tcp_states.h
tcp.h	tcp: fix tcp_release_cb() to dispatch via address family for mtu_reduced()	2014-10-15 08:31:56 +02:00
timewait_sock.h
transp_v6.h
udp.h	ipv6: call udp_push_pending_frames when uncorking a socket with AF_INET pending data	2013-07-28 16:29:49 -07:00
udplite.h
wext.h
wimax.h
wpan-phy.h
x25.h
x25device.h
xfrm.h	xfrm: force a garbage collection after deleting a policy	2013-05-31 17:30:07 -07:00