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Message-ID: <Y+DbNFogMZWPPhNB@corigine.com>
Date: Mon, 6 Feb 2023 11:49:24 +0100
From: Simon Horman <simon.horman@...igine.com>
To: Oz Shlomo <ozsh@...dia.com>
Cc: netdev@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>,
Roi Dayan <roid@...dia.com>, Jiri Pirko <jiri@...dia.com>,
Marcelo Ricardo Leitner <mleitner@...hat.com>,
Baowen Zheng <baowen.zheng@...igine.com>,
Jamal Hadi Salim <jhs@...atatu.com>,
Edward Cree <ecree.xilinx@...il.com>
Subject: Re: [PATCH net-next v2 2/9] net/sched: act_pedit, setup offload
action for action stats query
On Sun, Feb 05, 2023 at 03:55:18PM +0200, Oz Shlomo wrote:
> A single tc pedit action may be translated to multiple flow_offload
> actions.
> Offload only actions that translate to a single pedit command value.
>
> Signed-off-by: Oz Shlomo <ozsh@...dia.com>
>
> ---
> Change log:
>
> V1 -> V2:
> - Add extack message on error
> - Assign the flow action id outside the for loop.
> Ensure the rest of the pedit actions follow the assigned id.
> ---
> net/sched/act_pedit.c | 28 +++++++++++++++++++++++++++-
> 1 file changed, 27 insertions(+), 1 deletion(-)
>
> diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
> index c42fcc47dd6d..dae88e205cb1 100644
> --- a/net/sched/act_pedit.c
> +++ b/net/sched/act_pedit.c
> @@ -545,7 +545,33 @@ static int tcf_pedit_offload_act_setup(struct tc_action *act, void *entry_data,
> }
> *index_inc = k;
> } else {
> - return -EOPNOTSUPP;
> + struct flow_offload_action *fl_action = entry_data;
> + u32 cmd = tcf_pedit_cmd(act, 0);
> + u32 last_cmd;
> + int k;
> +
> + switch (cmd) {
> + case TCA_PEDIT_KEY_EX_CMD_SET:
> + fl_action->id = FLOW_ACTION_MANGLE;
> + break;
> + case TCA_PEDIT_KEY_EX_CMD_ADD:
> + fl_action->id = FLOW_ACTION_ADD;
> + break;
> + default:
> + NL_SET_ERR_MSG_MOD(extack, "Unsupported pedit command offload");
> + return -EOPNOTSUPP;
> + }
> +
> + for (k = 1; k < tcf_pedit_nkeys(act); k++) {
> + cmd = tcf_pedit_cmd(act, k);
> +
> + if (cmd != last_cmd) {
Hi Oz,
Is last_cmd initialised for the first iteration of this loop?
> + NL_SET_ERR_MSG_MOD(extack, "Unsupported pedit command offload");
> + return -EOPNOTSUPP;
> + }
> +
> + last_cmd = cmd;
> + }
> }
>
> return 0;
> --
> 1.8.3.1
>
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