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linux-stable/net/ipv6
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William Tu b80d0b93b9 net: ip6_gre: fix tunnel metadata device sharing. 
Currently ip6gre and ip6erspan share single metadata mode device,
using 'collect_md_tun'.  Thus, when doing:
  ip link add dev ip6gre11 type ip6gretap external
  ip link add dev ip6erspan12 type ip6erspan external
  RTNETLINK answers: File exists
simply fails due to the 2nd tries to create the same collect_md_tun.

The patch fixes it by adding a separate collect md tunnel device
for the ip6erspan, 'collect_md_tun_erspan'.  As a result, a couple
of places need to refactor/split up in order to distinguish ip6gre
and ip6erspan.

First, move the collect_md check at ip6gre_tunnel_{unlink,link} and
create separate function {ip6gre,ip6ersapn}_tunnel_{link_md,unlink_md}.
Then before link/unlink, make sure the link_md/unlink_md is called.
Finally, a separate ndo_uninit is created for ip6erspan.  Tested it
using the samples/bpf/test_tunnel_bpf.sh.

Fixes: ef7baf5e08 ("ip6_gre: add ip6 erspan collect_md mode")
Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-19 23:32:12 -04:00
..
ila net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
netfilter netfilter: x_tables: add module alias for icmp matches 2018-05-08 14:15:32 +02:00
addrconf.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
addrconf_core.c net: ipv6: Make inet6addr_validator a blocking notifier 2017-10-20 13:15:07 +01:00
addrlabel.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
af_inet6.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-03-31 23:33:04 -04:00
ah6.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-11-15 11:56:19 -08:00
anycast.c net: Use octal not symbolic permissions 2018-03-26 12:07:48 -04:00
calipso.c net, calipso: convert calipso_doi.refcount from atomic_t to refcount_t 2017-07-04 22:35:16 +01:00
datagram.c ipv6: add a wrapper for ip6_dst_store() with flowi6 checks 2018-04-04 11:31:57 -04:00
esp6.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-17 00:10:42 -05:00
esp6_offload.c esp: check the NETIF_F_HW_ESP_TX_CSUM bit before segmenting 2018-02-27 10:46:01 +01:00
exthdrs.c ipv6: sr: fix TLVs not being copied using setsockopt 2018-01-10 16:03:55 -05:00
exthdrs_core.c inet: whitespace cleanup 2018-02-28 11:43:28 -05:00
exthdrs_offload.c
fib6_notifier.c net: Add module reference to FIB notifiers 2017-09-01 20:33:42 -07:00
fib6_rules.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
fou6.c fou: make local function static 2017-05-21 13:42:36 -04:00
icmp.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
inet6_connection_sock.c
inet6_hashtables.c inet: Add a 2nd listener hashtable (port+addr) 2017-12-03 10:18:28 -05:00
ip6_checksum.c udplite: fix partial checksum initialization 2018-02-16 15:57:42 -05:00
ip6_fib.c ipv6: Revert "ipv6: Allow non-gateway ECMP for IPv6" 2018-05-02 16:33:02 -04:00
ip6_flowlabel.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ip6_gre.c net: ip6_gre: fix tunnel metadata device sharing. 2018-05-19 23:32:12 -04:00
ip6_icmp.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ip6_input.c
ip6_offload.c gso: fix payload length when gso_size is zero 2017-10-08 10:12:15 -07:00
ip6_offload.h
ip6_output.c net: test tailroom before appending to linear skb 2018-05-17 17:05:01 -04:00
ip6_tunnel.c ip6_tunnel: better validate user provided tunnel names 2018-04-05 15:16:15 -04:00
ip6_udp_tunnel.c
ip6_vti.c vti6: Change minimum MTU to IPV4_MIN_MTU, vti6 can carry IPv4 too 2018-04-27 07:29:23 +02:00
ip6mr.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ipcomp6.c
ipv6_sockglue.c inet: whitespace cleanup 2018-02-28 11:43:28 -05:00
Kconfig trivial: fix inconsistent help texts 2018-05-08 00:05:11 -04:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mcast.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
mcast_snoop.c
mip6.c
ndisc.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
netfilter.c netfilter: use skb_to_full_sk in ip6_route_me_harder 2018-02-25 20:51:13 +01:00
output_core.c net: accept UFO datagrams from tuntap and packet 2017-11-24 01:37:35 +09:00
ping.c ipv6: allow to cache dst for a connected sk in ip6_sk_dst_lookup_flow() 2018-04-04 11:31:57 -04:00
proc.c inet: frags: break the 2GB limit for frags storage 2018-03-31 23:25:39 -04:00
protocol.c
raw.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
reassembly.c inet: frags: fix ip6frag_low_thresh boundary 2018-04-04 12:04:59 -04:00
route.c ipv6: fix uninit-value in ip6_multipath_l3_keys() 2018-05-01 12:15:24 -04:00
seg6.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
seg6_hmac.c ipv6: sr: Use ARRAY_SIZE macro 2017-09-01 18:35:23 -07:00
seg6_iptunnel.c ipv6: sr: fix NULL pointer dereference in seg6_do_srh_encap()- v4 pkts 2018-04-22 21:04:17 -04:00
seg6_local.c net/ipv6: Pass skb to route lookup 2018-03-04 13:04:22 -05:00
sit.c ipv6: sit: better validate user provided tunnel names 2018-04-05 15:16:15 -04:00
syncookies.c net/ipv4: disable SMC TCP option with SYN Cookies 2018-03-25 20:53:54 -04:00
sysctl_net_ipv6.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
tcp_ipv6.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2018-03-31 23:33:04 -04:00
tcpv6_offload.c gso: validate gso_type in GSO handlers 2018-01-22 16:01:30 -05:00
tunnel6.c
udp.c udp: fix SO_BINDTODEVICE 2018-05-10 15:42:52 -04:00
udp_impl.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
udp_offload.c gso: validate gso_type in GSO handlers 2018-01-22 16:01:30 -05:00
udplite.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
xfrm6_input.c xfrm: Reinject transport-mode packets through tasklet 2017-12-19 08:23:21 +01:00
xfrm6_mode_beet.c networking: make skb_pull & friends return void pointers 2017-06-16 11:48:39 -04:00
xfrm6_mode_ro.c ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt() 2017-06-02 13:57:27 -04:00
xfrm6_mode_transport.c ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt() 2017-06-02 13:57:27 -04:00
xfrm6_mode_tunnel.c xfrm: Verify MAC header exists before overwriting eth_hdr(skb)->h_proto 2018-03-07 10:54:29 +01:00
xfrm6_output.c net: xfrm: use skb_gso_validate_network_len() to check gso sizes 2018-03-04 17:49:17 -05:00
xfrm6_policy.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
xfrm6_protocol.c
xfrm6_state.c inet: whitespace cleanup 2018-02-28 11:43:28 -05:00
xfrm6_tunnel.c xfrm: Fix warning in xfrm6_tunnel_net_exit. 2018-04-16 07:50:09 +02:00