David Ahern 4b2a2bfeb3 neighbor: Call __ipv4_neigh_lookup_noref in neigh_xmit ... Commit cd9ff4de01 changed the key for IFF_POINTOPOINT devices to INADDR_ANY but neigh_xmit which is used for MPLS encapsulations was not updated to use the altered key. The result is that every packet Tx does a lookup on the gateway address which does not find an entry, a new one is created only to find the existing one in the table right before the insert since arp_constructor was updated to reset the primary key. This is seen in the allocs and destroys counters: ip -s -4 ntable show | head -10 | grep alloc which increase for each packet showing the unnecessary overhread. Fix by having neigh_xmit use __ipv4_neigh_lookup_noref for NEIGH_ARP_TABLE. Fixes: cd9ff4de01 ("ipv4: Make neigh lookup keys for loopback/point-to-point devices be INADDR_ANY") Reported-by: Alan Maguire <alan.maguire@oracle.com> Signed-off-by: David Ahern <dsahern@gmail.com> Tested-by: Alan Maguire <alan.maguire@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2019-05-04 00:38:53 -04:00
..
datagram.c	net: datagram: fix unbounded loop in __skb_try_recv_datagram()	2019-03-27 21:58:53 -07:00
dev_addr_lists.c	net: dev: Issue NETDEV_PRE_CHANGEADDR	2018-12-13 18:41:38 -08:00
dev_ioctl.c	net: dev: Add extack argument to dev_set_mac_address()	2018-12-13 18:41:38 -08:00
dev.c	failover: allow name change on IFF_UP slave interfaces	2019-04-10 22:12:26 -07:00
devlink.c	net: devlink: skip info_get op call if it is not defined in dumpit	2019-03-26 11:25:29 -07:00
drop_monitor.c	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
dst_cache.c	net: core: dst_cache_set_ip6: Rename 'addr' parameter to 'saddr' for consistency	2018-03-05 12:52:45 -05:00
dst.c	net: add a route cache full diagnostic message	2019-01-17 15:37:25 -08:00
ethtool.c	net: ethtool: not call vzalloc for zero sized memory request	2019-03-29 13:41:55 -07:00
failover.c	failover: allow name change on IFF_UP slave interfaces	2019-04-10 22:12:26 -07:00
fib_notifier.c	net: Fix fib notifer to return errno	2018-03-29 14:10:30 -04:00
fib_rules.c	net/fib_rules: Update fib_nl_dumprule for strict data checking	2018-10-08 10:39:05 -07:00
filter.c	bpf: Check address length before reading address family	2019-04-12 10:25:03 -07:00
flow_dissector.c	flow_dissector: fix clamping of BPF flow_keys for non-zero nhoff	2019-04-03 16:49:48 +02:00
flow_offload.c	flow_offload: add flow action infrastructure	2019-02-06 10:38:25 -08:00
gen_estimator.c	net: core: protect rate estimator statistics pointer with lock	2018-08-11 12:37:10 -07:00
gen_stats.c	net: sched: put back q.qlen into a single location	2019-03-02 14:10:18 -08:00
gro_cells.c	gro_cells: make sure device is up in gro_cells_receive()	2019-03-10 11:07:14 -07:00
hwbm.c	net: hwbm: Fix unbalanced spinlock in error case	2016-05-25 12:35:09 -07:00
link_watch.c	net: linkwatch: add check for netdevice being present to linkwatch_do_dev	2018-09-19 21:06:46 -07:00
lwt_bpf.c	net: fix GSO in bpf_lwt_push_ip_encap	2019-03-07 10:41:29 +01:00
lwtunnel.c	ip_tunnel: Add dst_cache support in lwtunnel_state of ip tunnel	2019-02-24 22:13:49 -08:00
Makefile	flow_offload: add flow_rule and flow_match structures and use them	2019-02-06 10:38:25 -08:00
neighbour.c	neighbor: Call __ipv4_neigh_lookup_noref in neigh_xmit	2019-05-04 00:38:53 -04:00
net_namespace.c	netns: provide pure entropy for net_hash_mix()	2019-03-28 17:00:45 -07:00
net-procfs.c	proc: introduce proc_create_net{,_data}	2018-05-16 07:24:30 +02:00
net-sysfs.c	Revert "net-sysfs: Fix memory leak in netdev_register_kobject"	2019-04-15 13:10:27 -07:00
net-sysfs.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
net-traces.c	trace: events: add a few neigh tracepoints	2019-02-17 10:33:39 -08:00
netclassid_cgroup.c	cgroup, netclassid: add a preemption point to write_classid	2018-10-23 12:58:17 -07:00
netevent.c
netpoll.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2018-12-27 13:04:52 -08:00
netprio_cgroup.c	net: remove duplicate includes	2017-12-13 13:18:46 -05:00
page_pool.c	page_pool: use DMA_ATTR_SKIP_CPU_SYNC for DMA mappings	2019-02-13 22:00:16 -08:00
pktgen.c	mm: replace all open encodings for NUMA_NO_NODE	2019-03-05 21:07:14 -08:00
ptp_classifier.c	net/core: work around section mismatch warning for ptp_classifier	2019-04-16 20:46:17 -07:00
request_sock.c	ipv4: Namespaceify tcp_max_syn_backlog knob	2016-12-29 11:38:31 -05:00
rtnetlink.c	rtnetlink: fix rtnl_valid_stats_req() nlmsg_len check	2019-04-14 14:10:08 -07:00
scm.c	socket: Add SO_TIMESTAMPING_NEW	2019-02-03 11:17:31 -08:00
secure_seq.c	infiniband: i40iw, nes: don't use wall time for TCP sequence numbers	2018-07-11 12:10:19 -06:00
skbuff.c	net: Fix missing meta data in skb with vlan packet	2019-04-16 21:29:38 -07:00
skmsg.c	bpf: Stop the psock parser before canceling its work	2019-03-07 15:16:20 +01:00
sock_diag.c	net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd()	2018-08-14 10:01:24 -07:00
sock_map.c	bpf: skmsg, fix psock create on existing kcm/tls port	2018-10-20 00:40:45 +02:00
sock_reuseport.c	sctp: add sock_reuseport for the sock in __sctp_hash_endpoint	2018-11-12 09:09:51 -08:00
sock.c	socket: fix compat SO_RCVTIMEO_NEW/SO_SNDTIMEO_NEW	2019-04-16 21:52:22 -07:00
stream.c	tcp: reduce POLLOUT events caused by TCP_NOTSENT_LOWAT	2018-12-04 21:21:18 -08:00
sysctl_net_core.c	net: introduce a knob to control whether to inherit devconf config	2019-01-22 11:07:21 -08:00
timestamping.c
tso.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
utils.c	net: Remove some unneeded semicolon	2018-08-04 13:05:39 -07:00
xdp.c	xdp: remove redundant variable 'headroom'	2018-09-01 01:35:53 +02:00