netdev - Re: [PATCH net-next v1] flow_offload: improve extack msg for user when adding invalid filter

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Message-ID: <58d9789a-11db-8896-db10-f20f94753474@nvidia.com>
Date:   Mon, 28 Feb 2022 15:27:42 +0200
From:   Roi Dayan <roid@...dia.com>
To:     Baowen Zheng <baowen.zheng@...igine.com>, davem@...emloft.net,
        kuba@...nel.org
Cc:     xiyou.wangcong@...il.com, jhs@...atatu.com, netdev@...r.kernel.org,
        oss-drivers@...igine.com, simon.horman@...igine.com
Subject: Re: [PATCH net-next v1] flow_offload: improve extack msg for user
 when adding invalid filter



On 2022-02-28 12:44 PM, Baowen Zheng wrote:
> Add extack message to return exact message to user when adding invalid
> filter with conflict flags for TC action.
> 
> In previous implement we just return EINVAL which is confusing for user.
> 
> Signed-off-by: Baowen Zheng <baowen.zheng@...igine.com>
> ---
>   net/sched/act_api.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/net/sched/act_api.c b/net/sched/act_api.c
> index ca03e72..eb0d7bd 100644
> --- a/net/sched/act_api.c
> +++ b/net/sched/act_api.c
> @@ -1446,6 +1446,8 @@ int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
>   				continue;
>   			if (skip_sw != tc_act_skip_sw(act->tcfa_flags) ||
>   			    skip_hw != tc_act_skip_hw(act->tcfa_flags)) {
> +				NL_SET_ERR_MSG(extack,
> +					       "Conflict occurs for TC action and filter flags");
>   				err = -EINVAL;
>   				goto err;
>   			}

Reviewed-by: Roi Dayan <roid@...dia.com>