Attention is currently required from: neels, laforge. Hello Jenkins Builder, pespin,

I'd like you to reexamine a change. Please visit

https://gerrit.osmocom.org/c/osmo-upf/+/28309

to look at the new patch set (#7).

Change subject: implement GTP tunnel mapping via netfilter ......................................................................

implement GTP tunnel mapping via netfilter

Implement support for PFCP rulesets that ask for mapping a GTP tunnel: forwarding GTP payload between two GTP tunnels.

For a GTP tunnel mapping, dispatch netfilter rules that detect GTP packets with a given source address and TEID, and replace the TEID and destination address according to the PFCP ruleset.

The netfilter implementation is chosen to effect the packet rewriting and forwarding to take place directly in the kernel, for high throughput of GTP packets.

Related: SYS#5599 Change-Id: Ic0d319eb4f98cd51a5999c804c4203ab0bdda650 --- M doc/examples/osmo-upf/osmo-upf-mockup.cfg M include/osmocom/upf/upf.h M include/osmocom/upf/upf_nft.h M src/osmo-upf/Makefile.am M src/osmo-upf/osmo_upf_main.c M src/osmo-upf/up_gtp_action.c M src/osmo-upf/up_session.c M src/osmo-upf/upf.c A src/osmo-upf/upf_nft.c M src/osmo-upf/upf_vty.c 10 files changed, 452 insertions(+), 7 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-upf refs/changes/09/28309/7