linux_dsm_epyc7002/net/ipv6
William Dauchy 5fdcce211b net, ip6_tunnel: enhance tunnel locate with link check
With ipip, it is possible to create an extra interface explicitly
attached to a given physical interface:

  # ip link show tunl0
  4: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ipip 0.0.0.0 brd 0.0.0.0
  # ip link add tunl1 type ipip dev eth0
  # ip link show tunl1
  6: tunl1@eth0: <NOARP> mtu 1480 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ipip 0.0.0.0 brd 0.0.0.0

But it is not possible with ip6tnl:

  # ip link show ip6tnl0
  5: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN mode DEFAULT group default qlen 1000
      link/tunnel6 :: brd ::
  # ip link add ip6tnl1 type ip6tnl dev eth0
  RTNETLINK answers: File exists

This patch aims to make it possible by adding link comparaison in both
tunnel locate and lookup functions; we also modify mtu calculation when
attached to an interface with a lower mtu.

This permits to make use of x-netns communication by moving the newly
created tunnel in a given netns.

Signed-off-by: William Dauchy <w.dauchy@criteo.com>
Reviewed-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-14 07:31:48 -08:00
..
ila
netfilter
addrconf_core.c
addrconf.c ipv6/addrconf: fix potential NULL deref in inet6_set_link_af() 2020-02-07 18:43:23 +01:00
addrlabel.c
af_inet6.c
ah6.c
anycast.c
calipso.c
datagram.c
esp6_offload.c xfrm: support output_mark for offload ESP packets 2020-01-15 12:18:35 +01:00
esp6.c
exthdrs_core.c
exthdrs_offload.c
exthdrs.c
fib6_notifier.c
fib6_rules.c
fou6.c
icmp.c
inet6_connection_sock.c
inet6_hashtables.c
ip6_checksum.c
ip6_fib.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-01-26 10:40:21 +01:00
ip6_flowlabel.c
ip6_gre.c net: ip6_gre: fix moving ip6gre between namespaces 2020-01-20 09:59:24 +01:00
ip6_icmp.c icmp: introduce helper for nat'd source address in network device context 2020-02-13 14:19:00 -08:00
ip6_input.c
ip6_offload.c
ip6_offload.h
ip6_output.c
ip6_tunnel.c net, ip6_tunnel: enhance tunnel locate with link check 2020-02-14 07:31:48 -08:00
ip6_udp_tunnel.c
ip6_vti.c vti[6]: fix packet tx through bpf_redirect() 2020-01-14 08:55:38 +01:00
ip6mr.c
ipcomp6.c
ipv6_sockglue.c
Kconfig
Makefile
mcast_snoop.c
mcast.c
mip6.c
ndisc.c
netfilter.c
output_core.c
ping.c
proc.c
protocol.c
raw.c
reassembly.c
route.c ipv6: Add "offload" and "trap" indications to routes 2020-01-14 18:53:35 -08:00
seg6_hmac.c
seg6_iptunnel.c
seg6_local.c ipv6: sr: remove SKB_GSO_IPXIP6 on End.D* actions 2020-01-21 10:17:07 +01:00
seg6.c
sit.c
syncookies.c mptcp: handle tcp fallback when using syn cookies 2020-01-29 17:45:20 +01:00
sysctl_net_ipv6.c
tcp_ipv6.c mptcp: Fix undefined mptcp_handle_ipv6_mapped for modular IPV6 2020-01-30 10:55:54 +01:00
tcpv6_offload.c
tunnel6.c
udp_impl.h
udp_offload.c udp: Support UDP fraglist GRO/GSO. 2020-01-27 11:00:21 +01:00
udp.c net: udp: use skb_list_walk_safe helper for gso segments 2020-01-14 11:48:41 -08:00
udplite.c
xfrm6_input.c
xfrm6_output.c
xfrm6_policy.c
xfrm6_protocol.c
xfrm6_state.c
xfrm6_tunnel.c