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alistair23-linux/net/ipv6
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Nicolas Dichtel c8e04566db vti[6]: fix packet tx through bpf_redirect() 
[ Upstream commit 95224166a9 ]

With an ebpf program that redirects packets through a vti[6] interface,
the packets are dropped because no dst is attached.

This could also be reproduced with an AF_PACKET socket, with the following
python script (vti1 is an ip_vti interface):

 import socket
 send_s = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, 0)
 # scapy
 # p = IP(src='10.100.0.2', dst='10.200.0.1')/ICMP(type='echo-request')
 # raw(p)
 req = b'E\x00\x00\x1c\x00\x01\x00\x00@\x01e\xb2\nd\x00\x02\n\xc8\x00\x01\x08\x00\xf7\xff\x00\x00\x00\x00'
 send_s.sendto(req, ('vti1', 0x800, 0, 0))

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2020-02-05 21:22:48 +00:00
..
ila treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
netfilter netfilter: drop bridge nf reset from nf_reset 2019-10-01 18:42:15 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile xfrm: make xfrm modes builtin 2019-04-08 09:15:17 +02:00
addrconf.c ipv6/addrconf: only check invalid header values when NETLINK_F_STRICT_CHK is set 2020-01-04 19:19:17 +01:00
addrconf_core.c net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup 2019-12-18 16:08:42 +01:00
addrlabel.c netlink: make validation more configurable for future strictness 2019-04-27 17:07:21 -04:00
af_inet6.c net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup 2019-12-18 16:08:42 +01:00
ah6.c ipv6: Use ipv6_authlen for len 2019-07-11 14:43:25 -07:00
anycast.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
calipso.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
datagram.c net: ipv6: add net argument to ip6_dst_lookup_flow 2019-12-18 16:08:40 +01:00
esp6.c xfrm: remove get_mtu indirection from xfrm_type 2019-07-01 06:16:40 +02:00
esp6_offload.c xfrm: support output_mark for offload ESP packets 2020-01-29 16:45:31 +01:00
exthdrs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
exthdrs_core.c ipv6: remove printk 2019-07-27 14:23:48 -07:00
exthdrs_offload.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
fib6_notifier.c net: Add module reference to FIB notifiers 2017-09-01 20:33:42 -07:00
fib6_rules.c ipv6: do not free rt if FIB_LOOKUP_NOREF is set on suppress rule 2019-09-26 09:34:25 +02:00
fou6.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
icmp.c ipv6: icmp: allow flowlabel reflection in echo replies 2019-07-01 10:54:51 -07:00
inet6_connection_sock.c net: add bool confirm_neigh parameter for dst_ops.update_pmtu 2020-01-04 19:18:58 +01:00
inet6_hashtables.c net: annotate accesses to sk->sk_incoming_cpu 2019-10-30 13:24:25 -07:00
ip6_checksum.c net: udp: fix handling of CHECKSUM_COMPLETE packets 2018-10-24 14:18:16 -07:00
ip6_fib.c ipv6: fix a typo in fib6_rule_lookup() 2019-09-20 19:17:57 -07:00
ip6_flowlabel.c ipv6: fix static key imbalance in fl_create() 2019-07-11 14:43:25 -07:00
ip6_gre.c net: ip6_gre: fix moving ip6gre between namespaces 2020-01-29 16:45:20 +01:00
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 ipv6: drop incoming packets having a v4mapped source address 2019-10-03 11:40:21 -04:00
ip6_offload.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ip6_offload.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ip6_output.c net: ipv6: add net argument to ip6_dst_lookup_flow 2019-12-18 16:08:40 +01:00
ip6_tunnel.c net, ip6_tunnel: fix namespaces move 2020-01-29 16:45:20 +01:00
ip6_udp_tunnel.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
ip6_vti.c vti[6]: fix packet tx through bpf_redirect() 2020-02-05 21:22:48 +00:00
ip6mr.c ipmr: remove hard code cache_resolve_queue_len limit 2019-09-07 17:49:00 +02:00
ipcomp6.c xfrm: remove type and offload_type map from xfrm_state_afinfo 2019-06-06 08:34:50 +02:00
ipv6_sockglue.c net-ipv6: IPV6_TRANSPARENT - check NET_RAW prior to NET_ADMIN 2019-11-21 19:15:20 -08:00
mcast.c mld: fix memory leak in mld_del_delrec() 2019-08-28 14:47:35 -07:00
mcast_snoop.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 343 2019-06-05 17:37:07 +02:00
mip6.c xfrm: remove type and offload_type map from xfrm_state_afinfo 2019-06-06 08:34:50 +02:00
ndisc.c net-ipv6-ndisc: add support for RFC7710 RA Captive Portal Identifier 2019-07-22 12:10:54 -07:00
netfilter.c net: ensure correct skb->tstamp in various fragmenters 2019-10-18 10:02:37 -07:00
output_core.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
ping.c ipv6: Fix the link time qualifier of 'ping_v6_proc_exit_net()' 2019-09-12 11:20:33 +01:00
proc.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-07 11:00:14 -07:00
protocol.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
raw.c net: ipv6: add net argument to ip6_dst_lookup_flow 2019-12-18 16:08:40 +01:00
reassembly.c inet: frags: re-introduce skb coalescing for local delivery 2019-08-08 15:55:10 -07:00
route.c net: add bool confirm_neigh parameter for dst_ops.update_pmtu 2020-01-04 19:18:58 +01:00
seg6.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
seg6_hmac.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
seg6_iptunnel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
seg6_local.c ipv6: sr: remove SKB_GSO_IPXIP6 on End.D* actions 2020-01-29 16:45:20 +01:00
sit.c sit: do not confirm neighbor when do pmtu update 2020-01-04 19:19:04 +01:00
syncookies.c net: ipv6: add net argument to ip6_dst_lookup_flow 2019-12-18 16:08:40 +01:00
sysctl_net_ipv6.c proc/sysctl: add shared variables for range check 2019-07-18 17:08:07 -07:00
tcp_ipv6.c net: ipv6: add net argument to ip6_dst_lookup_flow 2019-12-18 16:08:40 +01:00
tcpv6_offload.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
tunnel6.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
udp.c net: annotate accesses to sk->sk_incoming_cpu 2019-10-30 13:24:25 -07:00
udp_impl.h udp6: add missing rehash callback to udplite 2019-01-17 15:01:08 -08:00
udp_offload.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
udplite.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
xfrm6_input.c net: use skb_sec_path helper in more places 2018-12-19 11:21:37 -08:00
xfrm6_output.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
xfrm6_policy.c net: add bool confirm_neigh parameter for dst_ops.update_pmtu 2020-01-04 19:18:58 +01:00
xfrm6_protocol.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
xfrm6_state.c xfrm: remove eth_proto value from xfrm_state_afinfo 2019-06-06 08:34:50 +02:00
xfrm6_tunnel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00