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Jiri Benc 63d008a4e9 ipv4: send arp replies to the correct tunnel 
When using ip lwtunnels, the additional data for xmit (basically, the actual
tunnel to use) are carried in ip_tunnel_info either in dst->lwtstate or in
metadata dst. When replying to ARP requests, we need to send the reply to
the same tunnel the request came from. This means we need to construct
proper metadata dst for ARP replies.

We could perform another route lookup to get a dst entry with the correct
lwtstate. However, this won't always ensure that the outgoing tunnel is the
same as the incoming one, and it won't work anyway for IPv4 duplicate
address detection.

The only thing to do is to "reverse" the ip_tunnel_info.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-09-24 14:31:36 -07:00
..
9p 9p: switch p9_client_read() to passing struct iov_iter * 2015-04-11 22:28:27 -04:00
bluetooth Bluetooth: add hci_connect_le_scan 2015-08-10 21:36:13 +02:00
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
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2015-09-05 21:57:42 -07:00
netns Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2015-08-04 23:57:45 -07:00
nfc nfc: netlink: Add capability to reply to vendor_cmd with data 2015-08-20 22:00:11 +02:00
phonet
sctp sctp: fix ASCONF list handling 2015-06-14 12:55:49 -07:00
tc_act net_sched: act_bpf: remove spinlock in fast path 2015-08-26 11:01:45 -07:00
6lowpan.h 6lowpan: add generic 6lowpan netdev private data 2015-08-11 22:05:36 +02:00
act_api.h net_sched: make tcf_hash_destroy() static 2015-08-26 11:01:44 -07:00
addrconf.h Changes for 4.3 2015-09-09 08:33:31 -07:00
af_ieee802154.h ieee802154: mac802154: remove FSF address 2014-10-25 08:07:30 +02:00
af_rxrpc.h
af_unix.h net/unix: support SCM_SECURITY for stream sockets 2015-06-10 22:49:20 -07:00
af_vsock.h net: Pass kern from net_proto_family.create to sk_alloc 2015-05-11 10:50:17 -04:00
ah.h ipsec: Remove obsolete MAX_AH_AUTH_LEN 2014-09-18 10:54:36 +02:00
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: Implement port churn-machine (AD standard 43.4.17). 2015-02-24 16:05:48 -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 net/bonding: Export bond_option_active_slave_get_rcu 2015-08-30 18:08:50 -04:00
busy_poll.h
cfg80211-wext.h
cfg80211.h Merge branch 'mac80211' into mac80211-next 2015-07-17 15:39:41 +02:00
cfg802154.h ieee802154: add ack request default handling 2015-08-10 20:43:06 +02:00
checksum.h net: Add inet_proto_csum_replace_by_diff utility function 2015-08-17 21:33:06 -07:00
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: factor out classid retrieval 2015-07-20 12:41:30 -07:00
codel.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-05-13 14:31:43 -04:00
compat.h net: switch importing msghdr from userland to {compat_,}import_iovec() 2015-04-09 00:02:26 -04:00
datalink.h
dcbevent.h
dcbnl.h net/dcb: Add IEEE QCN attribute 2015-03-06 21:50:02 -05:00
dn.h
dn_dev.h
dn_fib.h
dn_neigh.h netfilter: Pass socket pointer down through okfn(). 2015-04-07 15:25:55 -04:00
dn_nsp.h
dn_route.h
dsa.h net: dsa: Add dsa_is_dsa_port() helper 2015-08-18 14:17:21 -07:00
dsfield.h
dst.h tcp: use dctcp if enabled on the route to the initiator 2015-08-31 12:34:00 -07:00
dst_metadata.h tun_dst: Remove opts_size 2015-08-31 21:23:42 -07:00
dst_ops.h net: Remove protocol from struct dst_ops 2015-03-09 16:06:10 -04:00
esp.h
ethoc.h
fib_rules.h net: ipv6: use common fib_default_rule_pref 2015-09-09 14:19:50 -07:00
firewire.h
flow.h net: Fix vti use case with oif in dst lookups 2015-09-17 16:36:34 -07:00
flow_dissector.h flow_dissector: Don't use bit fields. 2015-09-01 16:46:08 -07:00
flowcache.h
fou.h ip_tunnel: Ops registration for secondary encap (fou, gue) 2014-11-12 15:01:35 -05:00
garp.h
gen_stats.h net: sched: enable per cpu qstats 2014-09-30 01:02:26 -04:00
genetlink.h net: Introduce possible_net_t 2015-03-12 14:39:40 -04:00
geneve.h geneve: Consolidate Geneve functionality in single module. 2015-08-27 15:42:48 -07:00
gre.h gre: Remove support for sharing GRE protocol hook. 2015-08-10 14:03:54 -07:00
gro_cells.h gro_cells: remove spinlock protecting receive queues 2015-08-31 15:17:17 -07:00
gue.h gue: Protocol constants for remote checksum offload 2014-11-05 16:30:03 -05:00
icmp.h
ieee80211_radiotap.h
ieee802154_netdev.h mac802154: cleanup llsec param flags 2015-06-12 11:42:29 +02:00
if_inet6.h ipv6: do retries on stable privacy addresses 2015-03-23 22:12:09 -04:00
inet6_connection_sock.h inet: get rid of central tcp/dccp listener timer 2015-03-20 12:40:25 -04:00
inet6_hashtables.h ipv6: get rid of __inet6_hash() 2015-03-18 22:00:35 -04:00
inet_common.h net: Modify sk_alloc to not reference count the netns of kernel sockets. 2015-05-11 10:50:18 -04:00
inet_connection_sock.h tcp: fix child sockets to use system default congestion control if not set 2015-05-31 21:49:14 -07:00
inet_ecn.h
inet_frag.h inet: frags: remove INET_FRAG_EVICTED and use list_evictor for the test 2015-07-26 21:00:15 -07:00
inet_hashtables.h inet: simplify timewait refcounting 2015-07-09 15:12:20 -07:00
inet_sock.h inet: add IP_BIND_ADDRESS_NO_PORT to overcome bind(0) limitations 2015-06-06 23:57:12 -07:00
inet_timewait_sock.h tcp/dccp: fix timewait races in timer handling 2015-09-21 16:32:29 -07:00
inetpeer.h net: Add support for VRFs to inetpeer cache 2015-08-28 13:32:36 -07:00
ip.h net: Introduce helper functions to get the per cpu data 2015-08-30 21:48:58 -07:00
ip6_checksum.h net: add gro_compute_pseudo functions 2014-08-24 18:09:23 -07:00
ip6_fib.h ipv6: include NLM_F_REPLACE in route replace notifications 2015-09-17 15:00:27 -07:00
ip6_route.h ipv6: Add rt6_get_cookie() function 2015-05-25 13:25:34 -04:00
ip6_tunnel.h ip6tunnel: make rx/tx bytes counters consistent 2015-09-20 22:36:42 -07:00
ip_fib.h net: Fix behaviour of unreachable, blackhole and prohibit routes 2015-09-20 21:45:08 -07:00
ip_tunnels.h ipv4: send arp replies to the correct tunnel 2015-09-24 14:31:36 -07:00
ip_vs.h ipvs: add more mcast parameters for the sync daemon 2015-08-21 09:10:11 -07:00
ipcomp.h
ipconfig.h
ipv6.h ipv6: Enable auto flow labels by default 2015-07-31 17:07:12 -07:00
ipx.h switch ipxrtr_route_packet() from iovec to msghdr 2014-11-24 04:28:49 -05:00
iw_handler.h wext: add checked wrappers for adding events/points to streams 2015-02-28 21:31:12 +01:00
lapb.h
lib80211.h lib80211: remove unused print_ssid() 2014-10-14 02:18:27 +02:00
llc.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
lwtunnel.h lwt: Add cfg argument to build_state 2015-08-24 10:34:40 -07:00
mac80211.h mac80211: protect non-HT BSS when HT TDLS traffic exists 2015-09-04 14:25:46 +02:00
mac802154.h mac802154: do not export ieee802154_rx() 2015-07-23 17:10:50 +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.h openvswitch: Add basic MPLS support to kernel 2014-11-05 23:52:33 -08:00
mpls_iptunnel.h mpls: ip tunnel support 2015-07-21 10:39:05 -07:00
mrp.h
ndisc.h ipv6: ndisc: inherit metadata dst when creating ndisc requests 2015-08-20 15:42:37 -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 netfilter: nfacct: per network namespace support 2015-08-07 11:50:56 +02:00
net_ratelimit.h
netevent.h
netlabel.h netlabel: fix the netlbl_catmap_setlong() dummy function 2014-08-07 20:55:21 -04:00
netlink.h netlink: implement nla_get_in_addr and nla_get_in6_addr 2015-03-31 13:58:35 -04:00
netprio_cgroup.h
netrom.h
nexthop.h
nl802154.h ieee802154: add ack request default handling 2015-08-10 20:43:06 +02:00
p8022.h
ping.h net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
pkt_cls.h net: sched: remove tcf_proto from ematch calls 2014-10-06 18:02:32 -04:00
pkt_sched.h net: sched: consolidate tc_classify{,_compat} 2015-08-27 14:18:48 -07:00
protocol.h
psnap.h
raw.h
rawv6.h
red.h
regulatory.h cfg80211: allow wiphy specific regdomain management 2014-12-17 11:49:55 +01:00
request_sock.h tcp: provide SYN headers for passive connections 2015-05-05 16:02:34 -04:00
rose.h
route.h net: Fix vti use case with oif in dst lookups 2015-09-17 16:36:34 -07:00
rtnetlink.h openvswitch: Use regular VXLAN net_device device 2015-07-21 10:39:07 -07:00
sch_generic.h net: sched: register noqueue qdisc 2015-08-27 17:14:30 -07:00
scm.h
secure_seq.h
slhc_vj.h
snmp.h Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2014-10-15 07:48:18 +02:00
sock.h memcg: move memcg_proto_active from sock.h 2015-09-08 15:35:28 -07:00
Space.h
stp.h
switchdev.h net: switchdev: support static FDB addresses 2015-08-11 12:03:19 -07:00
tcp.h tcp: use dctcp if enabled on the route to the initiator 2015-08-31 12:34:00 -07:00
tcp_memcontrol.h
tcp_states.h inet: add TCP_NEW_SYN_RECV state 2015-03-12 22:58:12 -04:00
timewait_sock.h inet: remove BUG_ON() in twsk_destructor() 2015-07-09 15:12:20 -07:00
transp_v6.h
tso.h
udp.h net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
udp_tunnel.h vxlan: do not receive IPv4 packets on IPv6 socket 2015-08-29 13:07:54 -07:00
udplite.h net: switch memcpy_fromiovec()/memcpy_fromiovecend() users to copy_from_iter() 2015-02-04 01:34:15 -05:00
vrf.h net: Make table id type u32 2015-09-01 14:32:44 -07:00
vsock_addr.h
vxlan.h vxlan: fix multiple inclusion of vxlan.h 2015-08-25 14:32:04 -07:00
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: Add oif to dst lookups 2015-08-11 12:41:35 +02:00