netdev - [PATCH iwl-net] ice: Fix checking for unsupported keys on non-tunnel device

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Message-ID: <20240409154543.8181-2-marcin.szycik@linux.intel.com>
Date: Tue,  9 Apr 2024 17:45:44 +0200
From: Marcin Szycik <marcin.szycik@...ux.intel.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
	Marcin Szycik <marcin.szycik@...ux.intel.com>,
	Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Subject: [PATCH iwl-net] ice: Fix checking for unsupported keys on non-tunnel device

Add missing FLOW_DISSECTOR_KEY_ENC_* checks to TC flower filter parsing.
Without these checks, it would be possible to add filters with tunnel
options on non-tunnel devices. enc_* options are only valid for tunnel
devices.

Example:
  devlink dev eswitch set $PF1_PCI mode switchdev
  echo 1 > /sys/class/net/$PF1/device/sriov_numvfs
  tc qdisc add dev $VF1_PR ingress
  ethtool -K $PF1 hw-tc-offload on
  tc filter add dev $VF1_PR ingress flower enc_ttl 12 skip_sw action drop

Fixes: 9e300987d4a8 ("ice: VXLAN and Geneve TC support")
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Signed-off-by: Marcin Szycik <marcin.szycik@...ux.intel.com>
---
 drivers/net/ethernet/intel/ice/ice_tc_lib.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_tc_lib.c b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
index f8df93e1a9de..b49aa6554024 100644
--- a/drivers/net/ethernet/intel/ice/ice_tc_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
@@ -1489,7 +1489,10 @@ ice_parse_cls_flower(struct net_device *filter_dev, struct ice_vsi *vsi,
 		  (BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
 		   BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
 		   BIT_ULL(FLOW_DISSECTOR_KEY_ENC_KEYID) |
-		   BIT_ULL(FLOW_DISSECTOR_KEY_ENC_PORTS))) {
+		   BIT_ULL(FLOW_DISSECTOR_KEY_ENC_PORTS) |
+		   BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IP) |
+		   BIT_ULL(FLOW_DISSECTOR_KEY_ENC_OPTS) |
+		   BIT_ULL(FLOW_DISSECTOR_KEY_ENC_CONTROL))) {
 		NL_SET_ERR_MSG_MOD(fltr->extack, "Tunnel key used, but device isn't a tunnel");
 		return -EOPNOTSUPP;
 	} else {
-- 
2.41.0