RE: [Intel-wired-lan] [PATCH net-next v10 7/7] ice: Support GTP-U and GTP-C offload in switchdev

-----Original Message-----
From: Intel-wired-lan <redacted> On Behalf Of
Marcin Szycik
Sent: Friday, March 4, 2022 10:11 PM
To: netdev@vger.kernel.org
Cc: jiri@resnulli.us; xiyou.wangcong@gmail.com; osmocom-net-
gprs@lists.osmocom.org; jhs@mojatatu.com; laforge@gnumonks.org; intel-
wired-lan@lists.osuosl.org; kuba@kernel.org; davem@davemloft.net;
pablo@netfilter.org
Subject: [Intel-wired-lan] [PATCH net-next v10 7/7] ice: Support GTP-U and
GTP-C offload in switchdev

Add support for creating filters for GTP-U and GTP-C in switchdev mode. Add
support for parsing GTP-specific options (QFI and PDU type) and TEID.

By default, a filter for GTP-U will be added. To add a filter for GTP-C, specify
enc_dst_port = 2123, e.g.:

tc filter add dev $GTP0 ingress prio 1 flower enc_key_id 1337 \ enc_dst_port
2123 action mirred egress redirect dev $VF1_PR

Note: GTP-U with outer IPv6 offload is not supported yet.
Note: GTP-U with no payload offload is not supported yet.

Signed-off-by: Marcin Szycik <redacted>
---
v7: Fix ice_get_sw_prof_type kernel-doc
v9: Fix GTP-C dummy packet selection, GTP-C IPv6 offload working
v10: Rebase
---
drivers/net/ethernet/intel/ice/ice.h          |   1 +
.../net/ethernet/intel/ice/ice_flex_pipe.c    |  31 +-
.../net/ethernet/intel/ice/ice_flex_type.h    |   6 +-
.../ethernet/intel/ice/ice_protocol_type.h    |  19 +
drivers/net/ethernet/intel/ice/ice_switch.c   | 604 +++++++++++++++++-
drivers/net/ethernet/intel/ice/ice_switch.h   |   9 +
drivers/net/ethernet/intel/ice/ice_tc_lib.c   | 105 ++-
drivers/net/ethernet/intel/ice/ice_tc_lib.h   |   3 +
8 files changed, 760 insertions(+), 18 deletions(-)

Tested-by: Sandeep Penigalapati <redacted>