This patch set builds upon the initial GTP implementation to make
support closer to that enjoyed by other encapsulation protocols.
The major items are:
- Experimental IPv6 support
- Configurable networking interfaces so that GTP kernel can be
used and tested without needing GSN network emulation (i.e. no user
space daemon needed).
- Addition of a dst_cache in the GTP structure and other cleanup
Additionally, this patch set also includes:
- Common functions to get a route fo for an IP tunnel
For IPv6 support, the mobile subscriber needs to allow IPv6 addresses,
and the remote endpoint can be IPv6.
For configurable interfaces, configuration is added to allow an
alternate means to configure a GTP and device. This follows the
typical UDP encapsulation model of specifying a listener port for
receive, and a remote address and port for transmit.
Configuration is performed by iproute2/ip. I will post that
in a subsequent patch set.
Tested:
Configured the matrix of IPv4/IPv6 mobile subscriber, IPv4/IPv6 remote
peer, and GTP version 0 and 1 (eight combinations). Observed
connectivity and functional netperf. Also, tested VXLAN for
regression.
Test using openggs with ggsn and kernel module on one side and
emulated sgsn on the other. Observed connectivity and
functional netperf.
v2:
- Split the otiginal patch to post in parts in order to make
review more manageable
- Make IPv6 support experimental with a configuration option for it
- Prepend hash functions with gtp
- Generalize iptunnel update path MTU function and call it from gtp
instead using custom code
- Split original patch cleaning up udp_recv into several for easier
review
v3: Properly include netdev on cc
Tom Herbert (12):
iptunnel: Add common functions to get a tunnel route
vxlan: Call common functions to get tunnel routes
gtp: Call common functions to get tunnel routes and add dst_cache
iptunnel: Generalize tunnel update pmtu
gtp: Change to use gro_cells
gtp: Use goto for exceptions in gtp_udp_encap_recv funcs
gtp: udp recv clean up
gtp: Call function to update path mtu
gtp: Eliminate pktinfo and add port configuration
gtp: Experimental encapsulation of IPv6 packets
gtp: Experimental support encpasulating over IPv6
gtp: Allow configuring GTP interface as standalone
drivers/net/Kconfig | 12 +-
drivers/net/gtp.c | 1043 ++++++++++++++++++++++++++++++------------
drivers/net/vxlan.c | 84 +---
include/net/ip6_tunnel.h | 35 ++
include/net/ip_tunnels.h | 37 ++
include/uapi/linux/gtp.h | 8 +
include/uapi/linux/if_link.h | 3 +
net/ipv4/ip_tunnel.c | 71 ++-
net/ipv6/ip6_tunnel.c | 43 ++
9 files changed, 949 insertions(+), 387 deletions(-)
--
2.11.0
