netdev - [net-next 13/15] net/mlx5e: Extend flower police validation

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Date:   Wed, 13 Jul 2022 15:58:57 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Vlad Buslov <vladbu@...dia.com>,
        Jianbo Liu <jianbol@...dia.com>
Subject: [net-next 13/15] net/mlx5e: Extend flower police validation

From: Vlad Buslov <vladbu@...dia.com>

Recent net commit 4d1e07d83ccc ("net/mlx5e: Fix matchall police parameters
validation") removed notexceed action id validation from
mlx5e_police_validate() and left it up to callers. However, since
tc_act_can_offload_police() only exists in net-next its validation is
extended in this dedicated followup patch.

Signed-off-by: Vlad Buslov <vladbu@...dia.com>
Reviewed-by: Jianbo Liu <jianbol@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/police.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/police.c b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/police.c
index ab32fe6a2e57..4bd9c04a49e3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/police.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/police.c
@@ -10,6 +10,12 @@ tc_act_can_offload_police(struct mlx5e_tc_act_parse_state *parse_state,
 			  int act_index,
 			  struct mlx5_flow_attr *attr)
 {
+	if (act->police.notexceed.act_id != FLOW_ACTION_PIPE &&
+	    act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
+		NL_SET_ERR_MSG_MOD(parse_state->extack,
+				   "Offload not supported when conform action is not pipe or ok");
+		return false;
+	}
 	if (mlx5e_policer_validate(parse_state->flow_action, act,
 				   parse_state->extack))
 		return false;
-- 
2.36.1