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Mark Tomlinson 65685c3424 gre6: Fix reception with IP6_TNL_F_RCV_DSCP_COPY 
[ Upstream commit 272502fcb7cda01ab07fc2fcff82d1d2f73d43cc ]

When receiving an IPv4 packet inside an IPv6 GRE packet, and the
IP6_TNL_F_RCV_DSCP_COPY flag is set on the tunnel, the IPv4 header would
get corrupted. This is due to the common ip6_tnl_rcv() function assuming
that the inner header is always IPv6. This patch checks the tunnel
protocol for IPv4 inner packets, but still defaults to IPv6.

Fixes: 308edfdf1563 ("gre6: Cleanup GREv6 receive path, call common GRE functions")
Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-03 11:21:15 +02:00
..
ila
ila_xlat: add missing hash secret initialization
2017-06-24 07:11:12 +02:00
netfilter
netfilter: ipv6: nf_defrag: accept duplicate fragments again
2019-07-21 09:05:53 +02:00
addrconf_core.c
net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup
2020-05-20 08:15:30 +02:00
addrconf.c
ipv6/addrconf: call ipv6_mc_up() for non-Ethernet interface
2020-03-20 09:07:38 +01:00
addrlabel.c
…
af_inet6.c
net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup
2020-05-20 08:15:30 +02:00
ah6.c
ipsec: check return value of skb_to_sgvec always
2018-04-13 19:48:31 +02:00
anycast.c
ipv6: fix memory leaks on IPV6_ADDRFORM path
2020-08-21 11:01:55 +02:00
calipso.c
netlabel: cope with NULL catmap
2020-05-20 08:15:39 +02:00
datagram.c
net: ipv6: add net argument to ip6_dst_lookup_flow
2020-05-20 08:15:30 +02:00
esp6.c
esp6: fix memleak on error path in esp6_input
2020-06-11 09:22:18 +02:00
exthdrs_core.c
ipv6: constify the skb pointer of ipv6_find_tlv().
2016-06-27 15:06:15 -04:00
exthdrs_offload.c
…
exthdrs.c
ipv6: make ipv6_renew_options() interrupt/kernel safe
2018-08-24 13:12:36 +02:00
fib6_rules.c
ipv6: Do not leak throw route references
2017-07-05 14:40:16 +02:00
fou6.c
fou: add Kconfig options for IPv6 support
2016-05-29 22:24:21 -07:00
icmp.c
net: handle no dst on skb in icmp6_send
2016-11-28 16:13:01 -05:00
inet6_connection_sock.c
net: ipv6: add net argument to ip6_dst_lookup_flow
2020-05-20 08:15:30 +02:00
inet6_hashtables.c
tcp/dccp: fix possible race __inet_lookup_established()
2020-01-04 13:41:12 +01:00
ip6_checksum.c
net: udp: fix handling of CHECKSUM_COMPLETE packets
2018-11-10 07:42:58 -08:00
ip6_fib.c
ipv6: Fix route replacement with dev-only route
2020-03-11 07:53:05 +01:00
ip6_flowlabel.c
ipv6: flowlabel: fl6_sock_lookup() must use atomic_inc_not_zero
2019-06-22 08:17:21 +02:00
ip6_gre.c
ip6_gre: fix null-ptr-deref in ip6gre_init_net()
2020-07-31 16:44:07 +02:00
ip6_icmp.c
ipv6: icmp: add a force_saddr param to icmp6_send()
2016-06-18 22:11:38 -07:00
ip6_input.c
ipv6: drop incoming packets having a v4mapped source address
2019-10-07 18:53:20 +02:00
ip6_offload.c
gso_segment: Reset skb->mac_len after modifying network header
2018-09-29 03:07:32 -07:00
ip6_offload.h
udp: Add GRO functions to UDP socket
2016-04-07 16:53:29 -04:00
ip6_output.c
net: ipv6: add net argument to ip6_dst_lookup_flow
2020-05-20 08:15:30 +02:00
ip6_tunnel.c
gre6: Fix reception with IP6_TNL_F_RCV_DSCP_COPY
2020-09-03 11:21:15 +02:00
ip6_udp_tunnel.c
ipv6: explicitly initialize udp6_addr in udp_sock_create6()
2019-01-09 16:16:40 +01:00
ip6_vti.c
vti6: Fix memory leak of skb if input policy check fails
2020-04-02 17:20:35 +02:00
ip6mr.c
ipv6: check sk sk_type and protocol early in ip_mroute_set/getsockopt
2019-08-04 09:33:43 +02:00
ipcomp6.c
…
ipv6_sockglue.c
ipv6: fix memory leaks on IPV6_ADDRFORM path
2020-08-21 11:01:55 +02:00
Kconfig
fou: fix IPv6 Kconfig options
2016-05-31 14:07:49 -07:00
Makefile
Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/selinux into next
2016-07-07 10:15:34 +10:00
mcast_snoop.c
…
mcast.c
mld: fix memory leak in ipv6_mc_destroy_dev()
2020-06-30 15:38:38 -04:00
mip6.c
…
ndisc.c
ipv6/ndisc: Preserve IPv6 control buffer if protocol error handlers are called
2018-11-10 07:42:57 -08:00
netfilter.c
…
output_core.c
inet: switch IP ID generator to siphash
2019-08-25 10:51:42 +02:00
ping.c
ipv6: Fix the link time qualifier of 'ping_v6_proc_exit_net()'
2019-09-21 07:14:01 +02:00
proc.c
inet: frags: break the 2GB limit for frags storage
2018-10-18 09:13:24 +02:00
protocol.c
…
raw.c
net: ipv6: add net argument to ip6_dst_lookup_flow
2020-05-20 08:15:30 +02:00
reassembly.c
inet: frags: call inet_frags_fini() after unregister_pernet_subsys()
2020-01-29 10:24:25 +01:00
route.c
Revert "ipv6: add mtu lock check in __ip6_rt_update_pmtu"
2020-05-20 08:15:39 +02:00
sit.c
Revert "net: sit: fix memory leak in sit_init_net()"
2019-10-29 09:15:26 +01:00
syncookies.c
net: ipv6: add net argument to ip6_dst_lookup_flow
2020-05-20 08:15:30 +02:00
sysctl_net_ipv6.c
calipso: Add a label cache.
2016-06-27 15:06:17 -04:00
tcp_ipv6.c
net: ipv6: add net argument to ip6_dst_lookup_flow
2020-05-20 08:15:30 +02:00
tcpv6_offload.c
gso: validate gso_type in GSO handlers
2018-01-31 12:55:55 +01:00
tunnel6.c
…
udp_impl.h
udplite: call proper backlog handlers
2016-11-24 15:32:14 -05:00
udp_offload.c
gso: validate gso_type in GSO handlers
2018-01-31 12:55:55 +01:00
udp.c
net: udp: Fix wrong clean up for IS_UDPLITE macro
2020-07-31 16:44:06 +02:00
udplite.c
udplite: call proper backlog handlers
2016-11-24 15:32:14 -05:00
xfrm6_input.c
vti6: fix input path
2016-09-21 10:09:14 +02:00
xfrm6_mode_beet.c
…
xfrm6_mode_ro.c
ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()
2017-06-14 15:05:51 +02:00
xfrm6_mode_transport.c
ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()
2017-06-14 15:05:51 +02:00
xfrm6_mode_tunnel.c
…
xfrm6_output.c
xfrm: Always set XFRM_TRANSFORMED in xfrm{4,6}_output_finish
2020-05-02 17:23:09 +02:00
xfrm6_policy.c
xfrm6: avoid potential infinite loop in _decode_session6()
2018-06-26 08:08:05 +08:00
xfrm6_protocol.c
…
xfrm6_state.c
…
xfrm6_tunnel.c
xfrm6_tunnel: Fix potential panic when unloading xfrm6_tunnel module
2019-05-25 18:26:54 +02:00