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Krister Johansen 3ad7d2468f Ipvlan should return an error when an address is already in use. 
The ipvlan code already knows how to detect when a duplicate address is
about to be assigned to an ipvlan device.  However, that failure is not
propogated outward and leads to a silent failure.

Introduce a validation step at ip address creation time and allow device
drivers to register to validate the incoming ip addresses.  The ipvlan
code is the first consumer.  If it detects an address in use, we can
return an error to the user before beginning to commit the new ifa in
the networking code.

This can be especially useful if it is necessary to provision many
ipvlans in containers.  The provisioning software (or operator) can use
this to detect situations where an ip address is unexpectedly in use.

Signed-off-by: Krister Johansen <kjlx@templeofstupid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2017-06-09 12:26:07 -04:00
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9p 9p: constify ->d_name handling 2017-01-12 04:01:17 -05:00
bluetooth Bluetooth: Set LE Default PHY preferences 2017-05-18 13:52:49 +02:00
caif
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irda scripts/spelling.txt: add "overide" pattern and fix typo instances 2017-03-09 17:01:09 -08:00
iucv s390/iucv: do not use arrays as argument 2015-09-21 16:03:04 -07:00
netfilter netfilter: nf_tables: revisit chain/object refcounting from elements 2017-05-15 12:51:41 +02:00
netns tcp: Namespaceify sysctl_tcp_timestamps 2017-06-08 10:53:29 -04:00
nfc NFC: Add nfc_dbg() macro 2017-04-05 10:15:20 +02:00
phonet sock: struct proto hash function may error 2016-02-11 03:54:14 -05:00
sctp sctp: merge sctp_stream_new and sctp_stream_init 2017-06-02 13:56:26 -04:00
tc_act net: sched: introduce helper to identify gact trap action 2017-06-06 12:45:23 -04:00
6lowpan.h 6lowpan: Fix IID format for Bluetooth 2017-04-12 22:02:36 +02:00
Space.h
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act_api.h net: sched: add termination action to allow goto chain 2017-05-17 15:22:13 -04:00
addrconf.h Ipvlan should return an error when an address is already in use. 2017-06-09 12:26:07 -04:00
af_ieee802154.h ieee802154: af_ieee802154: fix typo in comment. 2015-09-17 13:20:05 +02:00
af_rxrpc.h rxrpc: Provide a cmsg to specify the amount of Tx data for a call 2017-06-07 17:15:46 +01:00
af_unix.h af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock' 2016-09-04 13:29:29 -07:00
af_vsock.h VSOCK: Add vsockmon tap functions 2017-04-24 12:35:56 -04:00
ah.h
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arp.h net: add confirm_neigh method to dst_ops 2017-02-07 13:07:46 -05:00
atmclip.h
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ax25.h
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ax88796.h
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bond_3ad.h bonding: 3ad: apply ad_actor settings changes immediately 2016-02-09 04:45:49 -05:00
bond_alb.h
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bond_options.h bonding: Prevent duplicate userspace notification 2017-05-27 18:51:41 -04:00
bonding.h bonding: fix wq initialization for links created via netlink 2017-04-21 15:28:37 -04:00
busy_poll.h net: Commonize busy polling code to focus on napi_id instead of socket 2017-03-24 20:49:31 -07:00
calipso.h calipso: Add a label cache. 2016-06-27 15:06:17 -04:00
cfg80211-wext.h
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cfg80211.h cfg80211: fix multi scheduled scan kernel-doc 2017-05-08 13:09:38 +02:00
cfg802154.h ieee802154: add netns support 2016-07-08 12:20:57 +02:00
checksum.h csum: eliminate sparse warning in remcsum_unadjust() 2017-01-20 12:12:13 -05:00
cipso_ipv4.h netlabel: out of bound access in cipso_v4_validate() 2017-02-04 19:44:22 -05:00
cls_cgroup.h cls_cgroup: get sk_classid only from full sockets 2016-04-19 20:09:25 -04:00
codel.h codel: split into multiple files 2016-04-25 16:44:27 -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
compat.h packet: compat support for sock_fprog 2016-06-09 23:41:03 -07:00
datalink.h
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dcbevent.h
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dcbnl.h
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devlink.h net/devlink: Add E-Switch encapsulation control 2017-04-22 20:26:37 +03:00
dn.h
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dn_dev.h
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dn_fib.h
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dn_neigh.h netfilter: Pass net into okfn 2015-09-17 17:18:37 -07:00
dn_nsp.h
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dn_route.h
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dsa.h net: dsa: Initialize all CPU and enabled ports masks in dsa_ds_parse() 2017-06-04 20:05:15 -04:00
dsfield.h
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dst.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-05-26 20:46:35 -04:00
dst_cache.h net: add dst_cache support 2016-02-16 20:21:48 -05:00
dst_metadata.h net/dst: Add dst port to dst_metadata utility functions 2016-11-09 13:41:54 -05:00
dst_ops.h net: add confirm_neigh method to dst_ops 2017-02-07 13:07:46 -05:00
esp.h esp6: Reorganize esp_output 2017-04-14 10:06:42 +02:00
ethoc.h net/ethoc: support big-endian register layout 2015-09-23 15:33:15 -07:00
fib_rules.h net: rtnetlink: plumb extended ack to doit function 2017-04-17 15:35:38 -04:00
firewire.h
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flow.h flowcache: make flow_key_size() return "unsigned int" 2017-04-03 19:04:48 -07:00
flow_dissector.h net/flow_dissector: add support for dissection of misc ip header fields 2017-06-04 18:12:23 -04:00
flowcache.h flowcache: more "unsigned int" 2017-04-03 19:04:48 -07:00
fou.h fou: Add encap ops for IPv6 tunnels 2016-05-20 18:03:16 -04:00
fq.h fq.h: Port memory limit mechanism from fq_codel 2016-09-30 13:29:21 +02:00
fq_impl.h fq.h: Port memory limit mechanism from fq_codel 2016-09-30 13:29:21 +02:00
garp.h
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gen_stats.h net_sched: gen_estimator: complete rewrite of rate estimators 2016-12-05 15:21:59 -05:00
genetlink.h genetlink: remove ops_list from genetlink header. 2017-06-05 10:54:55 -04:00
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: move to net/core/gro_cells.c 2017-02-08 14:38:18 -05:00
gtp.h gtp: #define #define _GTP_H_ and not #define _GTP_H 2016-07-25 17:55:43 -07:00
gue.h
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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 wireless: radiotap: rewrite the radiotap header file 2017-01-25 16:00:33 +01:00
ieee802154_netdev.h mac802154: constify ieee802154_llsec_ops structure 2016-01-04 20:40:41 +01:00
if_inet6.h net/ipv6: allow sysctl to change link-local address generation mode 2017-01-27 10:25:34 -05:00
ife.h net: Introduce ife encapsulation module 2017-02-03 15:16:45 -05:00
ila.h ila: Add generic ILA translation facility 2015-12-15 23:25:20 -05:00
inet6_connection_sock.h inet: drop ->bind_conflict 2017-01-18 13:04:28 -05:00
inet6_hashtables.h tcp/dccp: do not touch listener sk_refcnt under synflood 2016-04-04 22:11:20 -04:00
inet_common.h net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
inet_connection_sock.h net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
inet_ecn.h ipv6: suppress sparse warnings in IP6_ECN_set_ce() 2016-08-13 15:08:00 -07:00
inet_frag.h net: make struct inet_frags::qsize unsigned 2017-05-23 11:13:19 -04:00
inet_hashtables.h inet: reset tb->fastreuseport when adding a reuseport sk 2017-01-18 13:04:29 -05:00
inet_sock.h net/tcp-fastopen: Add new API support 2017-01-25 14:04:38 -05:00
inet_timewait_sock.h ipv4: Namespaceify tcp_tw_recycle and tcp_max_tw_buckets knob 2016-12-29 11:38:31 -05:00
inetpeer.h inet: tcp: fix inetpeer_set_addr_v4() 2015-12-16 00:14:12 -05:00
ip.h net: ipv4: Refine the ipv4_default_advmss 2017-04-13 13:19:48 -04:00
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 net: ipv6: Plumb extack through route add functions 2017-05-22 12:12:20 -04:00
ip6_route.h net: ipv6: Plumb extack through route add functions 2017-05-22 12:12:20 -04:00
ip6_tunnel.h ip6_tunnel: Allow policy-based routing through tunnels 2017-04-21 13:21:30 -04:00
ip_fib.h net: ipv4: Add extack message for invalid prefix or length 2017-05-30 11:55:31 -04:00
ip_tunnels.h ip_tunnel: Allow policy-based routing through tunnels 2017-04-21 13:21:31 -04:00
ip_vs.h ipvs: remove unused function ip_vs_set_state_timeout 2017-04-28 12:00:10 +02:00
ipcomp.h
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ipconfig.h
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ipv6.h net: ping: do not abuse udp_poll() 2017-06-04 22:56:55 -04:00
ipx.h
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iw_handler.h wext: uninline stream addition functions 2017-01-13 09:38:42 +01:00
kcm.h kcm: Use stream parser 2016-08-17 19:36:23 -04:00
l3mdev.h net: ipv4: Do not drop to make_route if oif is l3mdev 2016-10-13 12:05:26 -04:00
lapb.h
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lib80211.h
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llc.h
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llc_c_ac.h
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llc_c_ev.h
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llc_c_st.h
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llc_conn.h
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llc_if.h
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llc_pdu.h
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llc_s_ac.h
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llc_s_ev.h
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llc_s_st.h
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llc_sap.h
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lwtunnel.h net: add extack arg to lwtunnel build state 2017-05-30 11:55:32 -04:00
mac80211.h mac80211: properly remove RX_ENC_FLAG_40MHZ 2017-05-08 11:11:56 +02:00
mac802154.h ieee802154: cleanup WARN_ON for fc fetch 2016-07-08 13:23:12 +02:00
mip6.h
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mld.h
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mpls.h openvswitch: use mpls_hdr 2016-10-03 02:00:22 -04:00
mpls_iptunnel.h net: mpls: Increase max number of labels for lwt encap 2017-04-01 20:21:44 -07:00
mrp.h
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ncsi.h net/ncsi: Introduce ncsi_stop_dev() 2016-10-04 02:11:51 -04:00
ndisc.h ipv6: add support for NETDEV_RESEND_IGMP event 2017-03-28 22:02:21 -07:00
neighbour.h neigh: Really delete an arp/neigh entry on "ip neigh delete" or "arp -d" 2017-06-04 21:37:18 -04:00
net_namespace.h can: initial support for network namespaces 2017-04-04 17:35:58 +02:00
net_ratelimit.h
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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: pass extended ACK struct to parsing functions 2017-04-13 13:58:22 -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
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nexthop.h
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nl802154.h ieee802154: add netns support 2016-07-08 12:20:57 +02:00
p8022.h
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ping.h net: ping: make ping_v6_sendmsg static 2016-03-23 22:09:58 -04:00
pkt_cls.h sched: add helper for updating statistics on all actions 2017-05-31 17:58:13 -04:00
pkt_sched.h net: sched: move tc_classify function to cls_api.c 2017-05-17 15:22:13 -04:00
pptp.h pptp: Refactor the struct and macros of PPTP codes 2016-08-15 10:55:53 -07:00
protocol.h net: Add sysctl to toggle early demux for tcp and udp 2017-03-24 13:17:07 -07:00
psample.h net: Introduce psample, a new genetlink channel for packet sampling 2017-01-24 13:44:28 -05:00
psnap.h
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raw.h net: ip, diag -- Add diag interface for raw sockets 2016-10-23 19:35:24 -04:00
rawv6.h net: ip, diag -- Add diag interface for raw sockets 2016-10-23 19:35:24 -04:00
red.h ktime: Get rid of the union 2016-12-25 17:21:22 +01:00
regulatory.h
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request_sock.h net: make struct request_sock_ops::obj_size unsigned 2017-05-23 11:13:19 -04:00
rose.h
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route.h net: ipv4: refactor ip_route_input_noref 2017-05-26 14:12:49 -04:00
rtnetlink.h net: rtnetlink: plumb extended ack to doit function 2017-04-17 15:35:38 -04:00
sch_generic.h net: sched: add termination action to allow goto chain 2017-05-17 15:22:13 -04:00
scm.h sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h> 2017-03-02 08:42:31 +01:00
secure_seq.h tcp: Namespaceify sysctl_tcp_timestamps 2017-06-08 10:53:29 -04:00
seg6.h ipv6: sr: add core files for SR HMAC support 2016-11-09 20:40:06 -05:00
seg6_hmac.h ipv6: sr: add core files for SR HMAC support 2016-11-09 20:40:06 -05:00
slhc_vj.h
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smc.h smc: netlink interface for SMC sockets 2017-01-09 16:07:41 -05:00
snmp.h net: snmp: fix 64bit stats on 32bit arches 2016-04-28 11:49:45 -04:00
sock.h tcp: add TCPMemoryPressuresChrono counter 2017-06-08 11:26:19 -04:00
sock_reuseport.h soreuseport: fix NULL ptr dereference SO_REUSEPORT after bind 2016-01-19 14:44:23 -05:00
stp.h
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strparser.h kcm: Remove TCP specific references from kcm and strparser 2016-08-28 23:32:41 -04:00
switchdev.h net: bridge: Receive notification about successful FDB offload 2017-06-08 14:16:25 -04:00
tcp.h tcp: add TCPMemoryPressuresChrono counter 2017-06-08 11:26:19 -04:00
tcp_states.h
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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.h udp: use a separate rx queue for packet reception 2017-05-16 15:41:29 -04:00
udp_tunnel.h vxlan: Add new UDP encapsulation offload type for VXLAN-GPE 2016-06-17 20:23:32 -07:00
udplite.h udp: use a separate rx queue for packet reception 2017-05-16 15:41:29 -04:00
vsock_addr.h
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vxlan.h vxlan: remove unsed vxlan_dev_dst_port() 2016-11-15 12:16:13 -05:00
wext.h
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wimax.h
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x25.h net: x25: fix one potential use-after-free issue 2017-05-18 10:05:40 -04:00
x25device.h
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xfrm.h xfrm: fix stack access out of bounds with CONFIG_XFRM_SUB_POLICY 2017-05-04 07:30:59 +02:00