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David Ahern 04e0f78f87 net: ipv6: Compare lwstate in detecting duplicate nexthops 
[ Upstream commit f06b7549b7 ]

Lennert reported a failure to add different mpls encaps in a multipath
route:

  $ ip -6 route add 1234::/16 \
        nexthop encap mpls 10 via fe80::1 dev ens3 \
        nexthop encap mpls 20 via fe80::1 dev ens3
  RTNETLINK answers: File exists

The problem is that the duplicate nexthop detection does not compare
lwtunnel configuration. Add it.

Fixes: 19e42e4515 ("ipv6: support for fib route lwtunnel encap attributes")
Signed-off-by: David Ahern <dsahern@gmail.com>
Reported-by: João Taveira Araújo <joao.taveira@gmail.com>
Reported-by: Lennert Buytenhek <buytenh@wantstofly.org>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Tested-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-21 07:00:07 +02:00
..
9p
9p: constify ->d_name handling
2017-01-12 04:01:17 -05:00
bluetooth
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
caif
caif: fix a signedness bug in cfpkt_iterate()
2015-02-20 17:35:14 -05:00
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
Revert "netfilter: nf_tables: add flush field to struct nft_set_iter"
2017-03-13 17:30:16 +01:00
netns
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
2017-02-03 16:58:20 -05:00
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: get sock from transport in sctp_transport_update_pmtu
2017-04-05 07:20:06 -07:00
tc_act
net/act_pedit: Introduce 'add' operation
2017-02-10 13:18:33 -05:00
6lowpan.h
6lowpan: add 802.15.4 short addr slaac
2016-06-15 20:41:22 -07:00
act_api.h
net sched actions: Add support for user cookies
2017-01-25 12:37:04 -05:00
addrconf.h
ipv6: reorder ip6_route_dev_notifier after ipv6_dev_notf
2017-05-14 14:06:02 +02:00
af_ieee802154.h
ieee802154: af_ieee802154: fix typo in comment.
2015-09-17 13:20:05 +02:00
af_rxrpc.h
rxrpc: Rewrite the data and ack handling code
2016-09-08 11:10:12 +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
vhost-vsock: add pkt cancel capability
2017-03-21 14:41:46 -07:00
ah.h
ipsec: Remove obsolete MAX_AH_AUTH_LEN
2014-09-18 10:54:36 +02:00
arp.h
net: add confirm_neigh method to dst_ops
2017-02-07 13:07:46 -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
netns: make struct pernet_operations::id unsigned int
2016-11-18 10:59:15 -05:00
busy_poll.h
sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>
2017-03-02 08:42:32 +01:00
calipso.h
calipso: Add a label cache.
2016-06-27 15:06:17 -04:00
cfg80211-wext.h
…
cfg80211.h
scripts/spelling.txt: add "disassocation" pattern and fix typo instances
2017-02-27 18:43:47 -08:00
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_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: Add E-Switch inline mode control
2016-11-24 16:01:14 -05:00
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: remove unnecessary phy*.h includes
2017-02-10 13:51:04 -05:00
dsfield.h
…
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
dst.h
ipv4: add reference counting to metrics
2017-06-07 12:10:04 +02:00
esp.h
…
ethoc.h
net/ethoc: support big-endian register layout
2015-09-23 15:33:15 -07:00
fib_rules.h
net: core: add UID to flows, rules, and routes
2016-11-04 14:45:23 -04:00
firewire.h
…
flow_dissector.h
flow disector: ARP support
2017-01-11 11:02:47 -05:00
flow.h
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-12-12 19:25:04 -08:00
flowcache.h
net/flowcache: Convert to hotplug state machine
2016-11-09 23:45:28 +01:00
fou.h
fou: Add encap ops for IPv6 tunnels
2016-05-20 18:03:16 -04:00
fq_impl.h
fq.h: Port memory limit mechanism from fq_codel
2016-09-30 13:29:21 +02:00
fq.h
fq.h: Port memory limit mechanism from fq_codel
2016-09-30 13:29:21 +02:00
garp.h
…
gen_stats.h
net_sched: gen_estimator: complete rewrite of rate estimators
2016-12-05 15:21:59 -05:00
genetlink.h
genetlink: Make family a signed integer.
2016-11-13 12:14:59 -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: 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
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
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: remove bh disabling around percpu_counter accesses
2017-01-20 11:27:22 -05:00
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
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: Allow shorthand delete of all nexthops in multipath route
2017-02-04 19:58:14 -05:00
ip6_route.h
net: ipv6: Compare lwstate in detecting duplicate nexthops
2017-07-21 07:00:07 +02:00
ip6_tunnel.h
ip6_tunnel: Clear IP6CB in ip6tunnel_xmit()
2016-11-02 15:18:36 -04:00
ip_fib.h
ipv4: add reference counting to metrics
2017-06-07 12:10:04 +02:00
ip_tunnels.h
ip_tunnels: new IP_TUNNEL_INFO_BRIDGE flag for ip_tunnel_info mode
2017-02-03 15:21:21 -05:00
ip_vs.h
ipvs: free ip_vs_dest structs when refcnt=0
2017-02-02 14:31:57 +01:00
ip.h
Introduce a sysctl that modifies the value of PROT_SOCK.
2017-01-24 12:10:51 -05:00
ipcomp.h
…
ipconfig.h
…
ipv6.h
net: ping: do not abuse udp_poll()
2017-06-14 15:07:34 +02:00
ipx.h
switch ipxrtr_route_packet() from iovec to msghdr
2014-11-24 04:28:49 -05:00
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
…
lib80211.h
lib80211: remove unused print_ssid()
2014-10-14 02:18:27 +02:00
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
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2017-02-11 02:31:11 -05:00
mac80211.h
scripts/spelling.txt: add "an user" pattern and fix typo instances
2017-02-27 18:43:46 -08:00
mac802154.h
ieee802154: cleanup WARN_ON for fc fetch
2016-07-08 13:23:12 +02:00
mip6.h
…
mld.h
ipv6: mld: answer mldv2 queries with mldv1 reports in mldv1 fallback
2014-09-22 16:23:15 -04:00
mpls_iptunnel.h
mpls: multipath route support
2015-10-23 06:26:42 -07:00
mpls.h
openvswitch: use mpls_hdr
2016-10-03 02:00:22 -04:00
mrp.h
…
ncsi.h
net/ncsi: Introduce ncsi_stop_dev()
2016-10-04 02:11:51 -04:00
ndisc.h
net: add confirm_neigh method to dst_ops
2017-02-07 13:07:46 -05:00
neighbour.h
net: rename dst_neigh_output back to neigh_output
2017-02-11 21:25:18 -05:00
net_namespace.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2016-11-22 13:27:16 -05:00
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
net: ipv6: Change notifications for multipath add to RTA_MULTIPATH
2017-02-04 19:58:14 -05:00
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: Reflect HW offload status
2017-02-17 12:08:05 -05:00
pkt_sched.h
net: make default TX queue length a defined constant
2016-11-07 20:15:55 -05:00
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
psample.h
net: Introduce psample, a new genetlink channel for packet sampling
2017-01-24 13:44:28 -05:00
psnap.h
…
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
cfg80211: allow wiphy specific regdomain management
2014-12-17 11:49:55 +01:00
request_sock.h
ipv4: Namespaceify tcp_max_syn_backlog knob
2016-12-29 11:38:31 -05:00
rose.h
…
route.h
net: inet: Support UID-based routing in IP protocols.
2016-11-04 14:45:23 -04:00
rtnetlink.h
net: AF-specific RTM_GETSTATS attributes
2017-01-17 14:38:43 -05:00
sch_generic.h
sched: move tcf_proto_destroy and tcf_destroy_chain helpers into cls_api
2017-02-10 11:38:08 -05:00
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: randomize timestamps on syncookies
2017-05-14 14:06:02 +02:00
seg6_hmac.h
ipv6: sr: add core files for SR HMAC support
2016-11-09 20:40:06 -05:00
seg6.h
ipv6: sr: add core files for SR HMAC support
2016-11-09 20:40:06 -05:00
slhc_vj.h
…
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_reuseport.h
soreuseport: fix NULL ptr dereference SO_REUSEPORT after bind
2016-01-19 14:44:23 -05:00
sock.h
net: Work around lockdep limitation in sockets that use sockets
2017-03-09 18:23:27 -08:00
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
switchdev: bridge: Offload mc router ports
2017-02-10 11:46:39 -05:00
tcp_states.h
inet: add TCP_NEW_SYN_RECV state
2015-03-12 22:58:12 -04:00
tcp.h
tcp: randomize timestamps on syncookies
2017-05-14 14:06:02 +02:00
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
inet: collapse ipv4/v6 rcv_saddr_equal functions into one
2017-01-18 13:04:28 -05:00
udplite.h
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-12-16 10:24:44 -08:00
vsock_addr.h
…
vxlan.h
vxlan: fix hlist corruption
2017-07-21 07:00:07 +02:00
wext.h
…
wimax.h
net: treewide: Fix typo found in DocBook/networking.xml
2014-09-05 17:35:28 -07:00
x25.h
…
x25device.h
…
xfrm.h
xfrm: fix stack access out of bounds with CONFIG_XFRM_SUB_POLICY
2017-07-05 14:41:40 +02:00