diff mbox series

[net,17/19] net/mlx5e: MPLSoUDP decap, fix check for unsupported matches

Message ID 20220223170430.295595-18-saeed@kernel.org (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series [net,01/19] net/mlx5: Update the list of the PCI supported devices | expand

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Context Check Description
netdev/tree_selection success Clearly marked for net
netdev/fixes_present success Fixes tag present in non-next series
netdev/subject_prefix success Link
netdev/cover_letter success Pull request is its own cover letter
netdev/patch_count warning Series longer than 15 patches
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 3 of 3 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 48 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Saeed Mahameed Feb. 23, 2022, 5:04 p.m. UTC 
From: Maor Dickman <maord@nvidia.com>

Currently offload of rule on bareudp device require tunnel key
in order to match on mpls fields and without it the mpls fields
are ignored, this is incorrect due to the fact udp tunnel doesn't
have key to match on.

Fix by returning error in case flow is matching on tunnel key.

Fixes: 72046a91d134 ("net/mlx5e: Allow to match on mpls parameters")
Signed-off-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../mellanox/mlx5/core/en/tc_tun_mplsoudp.c   | 28 ++++++++-----------
 1 file changed, 11 insertions(+), 17 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_mplsoudp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_mplsoudp.c
index f40dbfcb6437..c5b1617d556f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_mplsoudp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun_mplsoudp.c
@@ -59,37 +59,31 @@  static int parse_tunnel(struct mlx5e_priv *priv,
 			void *headers_v)
 {
 	struct flow_rule *rule = flow_cls_offload_flow_rule(f);
-	struct flow_match_enc_keyid enc_keyid;
 	struct flow_match_mpls match;
 	void *misc2_c;
 	void *misc2_v;
 
-	misc2_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
-			       misc_parameters_2);
-	misc2_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
-			       misc_parameters_2);
-
-	if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS))
-		return 0;
-
-	if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID))
-		return 0;
-
-	flow_rule_match_enc_keyid(rule, &enc_keyid);
-
-	if (!enc_keyid.mask->keyid)
-		return 0;
-
 	if (!MLX5_CAP_ETH(priv->mdev, tunnel_stateless_mpls_over_udp) &&
 	    !(MLX5_CAP_GEN(priv->mdev, flex_parser_protocols) & MLX5_FLEX_PROTO_CW_MPLS_UDP))
 		return -EOPNOTSUPP;
 
+	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID))
+		return -EOPNOTSUPP;
+
+	if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS))
+		return 0;
+
 	flow_rule_match_mpls(rule, &match);
 
 	/* Only support matching the first LSE */
 	if (match.mask->used_lses != 1)
 		return -EOPNOTSUPP;
 
+	misc2_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
+			       misc_parameters_2);
+	misc2_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
+			       misc_parameters_2);
+
 	MLX5_SET(fte_match_set_misc2, misc2_c,
 		 outer_first_mpls_over_udp.mpls_label,
 		 match.mask->ls[0].mpls_label);