Roopa Prabhu d297653dd6 rtnetlink: fdb dump: optimize by saving last interface markers ... fdb dumps spanning multiple skb's currently restart from the first interface again for every skb. This results in unnecessary iterations on the already visited interfaces and their fdb entries. In large scale setups, we have seen this to slow down fdb dumps considerably. On a system with 30k macs we see fdb dumps spanning across more than 300 skbs. To fix the problem, this patch replaces the existing single fdb marker with three markers: netdev hash entries, netdevs and fdb index to continue where we left off instead of restarting from the first netdev. This is consistent with link dumps. In the process of fixing the performance issue, this patch also re-implements fix done by commit 472681d57a ("net: ndo_fdb_dump should report -EMSGSIZE to rtnl_fdb_dump") (with an internal fix from Wilson Kok) in the following ways: - change ndo_fdb_dump handlers to return error code instead of the last fdb index - use cb->args strictly for dump frag markers and not error codes. This is consistent with other dump functions. Below results were taken on a system with 1000 netdevs and 35085 fdb entries: before patch: $time bridge fdb show | wc -l 15065 real 1m11.791s user 0m0.070s sys 1m8.395s (existing code does not return all macs) after patch: $time bridge fdb show | wc -l 35085 real 0m2.017s user 0m0.113s sys 0m1.942s Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: Wilson Kok <wkok@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-09-01 16:56:15 -07:00
..
9p	9p: switch p9_client_read() to passing struct iov_iter *	2015-04-11 22:28:27 -04:00
bluetooth	Bluetooth: Add debugfs fields for hardware and firmware info	2016-07-18 09:33:28 +03:00
caif	caif: fix a signedness bug in cfpkt_iterate()	2015-02-20 17:35:14 -05:00
irda	irda: Convert function pointer arrays and uses to const	2014-12-10 15:33:16 -05:00
iucv	s390/iucv: do not use arrays as argument	2015-09-21 16:03:04 -07:00
netfilter	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next	2016-07-24 22:02:36 -07:00
netns	net: Remove fib_local variable	2016-08-09 14:57:39 -07:00
nfc	NFC: digital: Add support for NFC DEP Response Waiting Time	2016-07-11 02:01:14 +02:00
phonet	sock: struct proto hash function may error	2016-02-11 03:54:14 -05:00
sctp	sctp: change to use TCP_CLOSE_WAIT as SCTP_SS_CLOSING	2016-08-01 13:32:50 -07:00
tc_act	net_sched: act_vlan: Add priority option	2016-08-18 23:13:14 -07:00
6lowpan.h	6lowpan: add 802.15.4 short addr slaac	2016-06-15 20:41:22 -07:00
act_api.h	net_sched: convert tcf_exts from list to pointer array	2016-08-17 19:27:51 -04:00
addrconf.h	ipv6: export several functions	2016-06-15 20:41:23 -07:00
af_ieee802154.h	ieee802154: af_ieee802154: fix typo in comment.	2015-09-17 13:20:05 +02:00
af_rxrpc.h	rxrpc: Don't expose skbs to in-kernel users [ver #2]	2016-09-01 16:43:27 -07:00
af_unix.h	unix: correctly track in-flight fds in sending process user_struct	2016-02-08 10:30:42 -05:00
af_vsock.h	VSOCK: Introduce virtio_vsock_common.ko	2016-08-02 02:57:29 +03:00
ah.h
arp.h	neigh: Factor out ___neigh_lookup_noref	2015-03-04 00:23:23 -05:00
atmclip.h
ax25.h	ax25: Stop using sock->sk_protinfo.	2015-06-28 16:55:44 -07:00
ax88796.h
bond_3ad.h	bonding: 3ad: apply ad_actor settings changes immediately	2016-02-09 04:45:49 -05:00
bond_alb.h	net: Move bonding headers under include/net	2014-11-10 13:27:49 -05:00
bond_options.h	bonding: convert num_grat_arp to the new bonding option API	2015-07-27 01:05:24 -07:00
bonding.h	bonding: prevent out of bound accesses	2016-07-01 06:06:09 -04:00
busy_poll.h	net: un-inline sk_busy_loop()	2015-11-18 16:17:38 -05:00
calipso.h	calipso: Add a label cache.	2016-06-27 15:06:17 -04:00
cfg80211-wext.h
cfg80211.h	cfg80211: Add mesh peer AID setting API	2016-07-06 15:04:52 +02:00
cfg802154.h	ieee802154: add netns support	2016-07-08 12:20:57 +02:00
checksum.h	csum: Update csum_block_add to use rotate instead of byteswap	2016-03-13 15:01:00 -04:00
cipso_ipv4.h	cipso: don't use IPCB() to locate the CIPSO IP option	2015-02-11 14:46:37 -05:00
cls_cgroup.h	cls_cgroup: get sk_classid only from full sockets	2016-04-19 20:09:25 -04:00
codel_impl.h	codel: split into multiple files	2016-04-25 16:44:27 -04:00
codel_qdisc.h	net_sched: fq_codel: cache skb->truesize into skb->cb	2016-06-25 12:19:35 -04:00
codel.h	codel: split into multiple files	2016-04-25 16:44:27 -04:00
compat.h	packet: compat support for sock_fprog	2016-06-09 23:41:03 -07:00
datalink.h
dcbevent.h
dcbnl.h	net/dcb: Add IEEE QCN attribute	2015-03-06 21:50:02 -05:00
devlink.h	devlink: remove unused priv_size	2016-08-26 11:55:18 -07:00
dn_dev.h
dn_fib.h
dn_neigh.h	netfilter: Pass net into okfn	2015-09-17 17:18:37 -07:00
dn_nsp.h
dn_route.h
dn.h
dsa.h	net: dsa: add MDB support	2016-08-31 14:15:42 -07:00
dsfield.h
dst_cache.h	net: add dst_cache support	2016-02-16 20:21:48 -05:00
dst_metadata.h	ip_tunnel: add support for setting flow label via collect metadata	2016-03-11 15:14:26 -05:00
dst_ops.h	ipv4, ipv6: Pass net into __ip_local_out and __ip6_local_out	2015-10-08 04:27:02 -07:00
dst.h	route: move lwtunnel state to a single place	2016-04-25 16:20:09 -04:00
esp.h
ethoc.h	net/ethoc: support big-endian register layout	2015-09-23 15:33:15 -07:00
fib_rules.h	net: Add l3mdev rule	2016-06-08 11:36:02 -07:00
firewire.h
flow_dissector.h	rps: flow_dissector: Add the const for the parameter of flow_keys_have_l4	2016-09-01 16:51:08 -07:00
flow.h	ipv6, trace: fix tos reporting on fib6_table_lookup	2016-03-20 13:44:34 -04:00
flowcache.h
fou.h	fou: Add encap ops for IPv6 tunnels	2016-05-20 18:03:16 -04:00
fq_impl.h	fq: split out backlog update logic	2016-04-28 17:03:38 -04:00
fq.h	fq: add fair queuing framework	2016-04-25 16:45:53 -04:00
garp.h
gen_stats.h	net: sched: do not acquire qdisc spinlock in qdisc/class stats dump	2016-06-07 16:37:14 -07:00
genetlink.h	Revert "genl: Add genlmsg_new_unicast() for unicast message allocation"	2016-02-18 11:42:19 -05:00
geneve.h	net: Remove deprecated tunnel specific UDP offload functions	2016-06-17 20:23:32 -07:00
gre.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-08-18 01:17:32 -04:00
gro_cells.h	gro_cells: gro_cells_receive now return error code	2016-07-22 00:50:41 -04:00
gtp.h	gtp: #define #define _GTP_H_ and not #define _GTP_H	2016-07-25 17:55:43 -07:00
gue.h	gue: Protocol constants for remote checksum offload	2014-11-05 16:30:03 -05:00
hwbm.h	net: add a hardware buffer management helper API	2016-03-14 12:19:46 -04:00
icmp.h	net: snmp: kill STATS_BH macros	2016-04-27 22:48:25 -04:00
ieee80211_radiotap.h
ieee802154_netdev.h	mac802154: constify ieee802154_llsec_ops structure	2016-01-04 20:40:41 +01:00
if_inet6.h	ipv6: do retries on stable privacy addresses	2015-03-23 22:12:09 -04:00
ila.h	ila: Add generic ILA translation facility	2015-12-15 23:25:20 -05:00
inet6_connection_sock.h	ipv6: remove unused in6_addr struct	2016-03-22 15:45:44 -04:00
inet6_hashtables.h	tcp/dccp: do not touch listener sk_refcnt under synflood	2016-04-04 22:11:20 -04:00
inet_common.h	ip4ip6: Support for GSO/GRO	2016-05-20 18:03:17 -04:00
inet_connection_sock.h	tcp/dccp: fix another race at listener dismantle	2016-02-18 11:35:51 -05:00
inet_ecn.h	ipv6: suppress sparse warnings in IP6_ECN_set_ce()	2016-08-13 15:08:00 -07:00
inet_frag.h	ipv4: namespacify ip fragment max dist sysctl knob	2016-02-16 20:42:54 -05:00
inet_hashtables.h	tcp/dccp: do not touch listener sk_refcnt under synflood	2016-04-04 22:11:20 -04:00
inet_sock.h	ipv6: Allow request socks to contain IPv6 options.	2016-06-27 15:05:28 -04:00
inet_timewait_sock.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-20 06:08:27 -07:00
inetpeer.h	inet: tcp: fix inetpeer_set_addr_v4()	2015-12-16 00:14:12 -05:00
ip6_checksum.h	ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short	2016-03-13 23:55:13 -04:00
ip6_fib.h	ipv6: Check rt->dst.from for the DST_NOCACHE route	2015-11-15 17:12:37 -05:00
ip6_route.h	net: ipv6: Move ip6_route_get_saddr to inline	2016-06-17 21:25:29 -07:00
ip6_tunnel.h	ipv6: hide ip6_encap_hlen/ip6_tnl_encap definitions	2016-05-29 22:24:21 -07:00
ip_fib.h	route: check and remove route cache when we get route	2016-02-18 11:31:36 -05:00
ip_tunnels.h	gre: better support for ICMP messages for gre+ipv6	2016-06-18 22:11:39 -07:00
ip_vs.h	ipvs: update real-server binding of outgoing connections in SIP-pe	2016-06-06 09:47:25 +09:00
ip.h	net/ipv4: Introduce IPSKB_FRAG_SEGS bit to inet_skb_parm.flags	2016-07-19 16:40:22 -07:00
ipcomp.h
ipconfig.h
ipv6.h	Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/selinux into next	2016-07-07 10:15:34 +10:00
ipx.h	switch ipxrtr_route_packet() from iovec to msghdr	2014-11-24 04:28:49 -05:00
iw_handler.h	cfg80211/wext: fix message ordering	2016-01-29 17:13:43 +01:00
kcm.h	kcm: Use stream parser	2016-08-17 19:36:23 -04:00
l3mdev.h	net: ipv6: Address selection needs to consider L3 domains	2016-06-17 21:25:29 -07:00
lapb.h
lib80211.h
llc_c_ac.h
llc_c_ev.h
llc_c_st.h	llc: Make llc_conn_ev_qfyr_t function pointer arrays const	2014-12-10 15:21:24 -05:00
llc_conn.h	net: Pass kern from net_proto_family.create to sk_alloc	2015-05-11 10:50:17 -04:00
llc_if.h
llc_pdu.h
llc_s_ac.h
llc_s_ev.h
llc_s_st.h	llc: Make llc_sap_action_t function pointer arrays const	2014-12-10 15:21:24 -05:00
llc_sap.h
llc.h
lwtunnel.h	net: lwtunnel: Handle fragmentation	2016-08-30 22:27:18 -07:00
mac80211.h	mac80211: Add ieee80211_hw pointer to get_expected_throughput	2016-08-05 14:23:25 +02:00
mac802154.h	ieee802154: cleanup WARN_ON for fc fetch	2016-07-08 13:23:12 +02:00
mip6.h
mld.h
mpls_iptunnel.h	mpls: multipath route support	2015-10-23 06:26:42 -07:00
mpls.h	openvswitch: Add basic MPLS support to kernel	2014-11-05 23:52:33 -08:00
mrp.h
ncsi.h	net/ncsi: Package and channel management	2016-07-19 20:49:17 -07:00
ndisc.h	6lowpan: introduce 6lowpan-nd	2016-06-15 20:41:23 -07:00
neighbour.h	net: add explicit logging and stat for neighbour table overflow	2015-08-10 13:46:21 -07:00
net_namespace.h	treewide: replace obsolete _refok by __ref	2016-08-02 17:31:41 -04:00
net_ratelimit.h
netevent.h	neigh: Send a notification when DELAY_PROBE_TIME changes	2016-07-05 09:06:29 -07:00
netlabel.h	netlabel: Implement CALIPSO config functions for SMACK.	2016-06-27 15:06:18 -04:00
netlink.h	netlink: kill nla_put_u64()	2016-05-16 13:46:23 -04:00
netprio_cgroup.h	net: wrap sock->sk_cgrp_prioidx and ->sk_classid inside a struct	2015-12-08 22:02:33 -05:00
netrom.h
nexthop.h
nl802154.h	ieee802154: add netns support	2016-07-08 12:20:57 +02:00
p8022.h
ping.h	net: ping: make ping_v6_sendmsg static	2016-03-23 22:09:58 -04:00
pkt_cls.h	net_sched: properly handle failure case of tcf_exts_init()	2016-08-22 17:02:31 -07:00
pkt_sched.h	net: sched: convert qdisc linked list to hashtable	2016-08-10 17:19:02 -07:00
pptp.h	pptp: Refactor the struct and macros of PPTP codes	2016-08-15 10:55:53 -07:00
protocol.h	udp: Remove udp_offloads	2016-04-07 16:53:30 -04:00
psnap.h
raw.h	sock: struct proto hash function may error	2016-02-11 03:54:14 -05:00
rawv6.h
red.h
regulatory.h	cfg80211: allow wiphy specific regdomain management	2014-12-17 11:49:55 +01:00
request_sock.h	inet: reqsk_alloc() needs to take care of dead listeners	2016-04-04 22:11:19 -04:00
rose.h
route.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-04-23 18:51:33 -04:00
rtnetlink.h	net: rtnetlink: add support for the IFLA_STATS_LINK_XSTATS_SLAVE attribute	2016-06-30 06:15:04 -04:00
sch_generic.h	net: minor optimization in qdisc_qstats_cpu_drop()	2016-08-25 16:45:29 -07:00
scm.h	unix: correctly track in-flight fds in sending process user_struct	2016-02-08 10:30:42 -05:00
secure_seq.h
slhc_vj.h
snmp.h	net: snmp: fix 64bit stats on 32bit arches	2016-04-28 11:49:45 -04:00
sock_reuseport.h	soreuseport: fix NULL ptr dereference SO_REUSEPORT after bind	2016-01-19 14:44:23 -05:00
sock.h	net: remove clear_sk() method	2016-08-23 23:25:29 -07:00
Space.h
stp.h
strparser.h	kcm: Remove TCP specific references from kcm and strparser	2016-08-28 23:32:41 -04:00
switchdev.h	rtnetlink: fdb dump: optimize by saving last interface markers	2016-09-01 16:56:15 -07:00
tcp_states.h	inet: add TCP_NEW_SYN_RECV state	2015-03-12 22:58:12 -04:00
tcp.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-08-30 00:54:02 -04:00
timewait_sock.h	inet: remove BUG_ON() in twsk_destructor()	2015-07-09 15:12:20 -07:00
transp_v6.h	ipv6: add new struct ipcm6_cookie	2016-05-03 16:08:14 -04:00
tso.h	net: tso: add support for IPv6	2015-10-26 22:24:22 -07:00
udp_tunnel.h	vxlan: Add new UDP encapsulation offload type for VXLAN-GPE	2016-06-17 20:23:32 -07:00
udp.h	net: diag: support SOCK_DESTROY for UDP sockets	2016-08-23 23:12:27 -07:00
udplite.h	net: switch memcpy_fromiovec()/memcpy_fromiovecend() users to copy_from_iter()	2015-02-04 01:34:15 -05:00
vsock_addr.h
vxlan.h	net: Remove deprecated tunnel specific UDP offload functions	2016-06-17 20:23:32 -07:00
wext.h
wimax.h
x25.h
x25device.h
xfrm.h	net: xfrm: kill XFRM_INC_STATS_BH()	2016-04-27 22:48:23 -04:00