Hi,

> -----Original Message-----
> From: Richardson, Bruce <[email protected]>
> Sent: Tuesday, August 6, 2024 11:24 PM
> To: [email protected]
> Cc: Richardson, Bruce <[email protected]>; Nithin Dabilpuram
> <[email protected]>; Kiran Kumar K <[email protected]>;
> Sunil Kumar Kori <[email protected]>; Satha Rao
> <[email protected]>; Harman Kalra <[email protected]>; Hemant
> Agrawal <[email protected]>; Sachin Saxena
> <[email protected]>; Jie Hai <[email protected]>; Yisen Zhuang
> <[email protected]>; Wu, Jingjing <[email protected]>; Xu,
> Rosen <[email protected]>; Jiawen Wu <[email protected]>; Jian
> Wang <[email protected]>; Dumitrescu, Cristian
> <[email protected]>; Thomas Monjalon
> <[email protected]>; Ferruh Yigit <[email protected]>; Andrew
> Rybchenko <[email protected]>
> Subject: [PATCH 1/4] ethdev: make parameters to TM node add fn constant
> 
> The function to add a new scheduling node in rte_tm should not (and does
> not) modify the actual node parameters passed in via struct pointer. We
> should guarantee this by marking the parameter pointer as const. This allows
> SW to create multiple scheduling nodes using the same parameter struct
> without having to reset it each time.
> 
> Signed-off-by: Bruce Richardson <[email protected]>
> ---
>  drivers/net/ipn3ke/ipn3ke_tm.c  |  4 ++--
> diff --git a/drivers/net/ipn3ke/ipn3ke_tm.c
> b/drivers/net/ipn3ke/ipn3ke_tm.c index 0260227900..cffe1fdaa4 100644
> --- a/drivers/net/ipn3ke/ipn3ke_tm.c
> +++ b/drivers/net/ipn3ke/ipn3ke_tm.c
> @@ -1010,7 +1010,7 @@ ipn3ke_tm_tdrop_profile_delete(struct
> rte_eth_dev *dev,  static int
> ipn3ke_tm_node_add_check_parameter(uint32_t tm_id,
>       uint32_t node_id, uint32_t parent_node_id, uint32_t priority,
> -     uint32_t weight, uint32_t level_id, struct rte_tm_node_params
> *params,
> +     uint32_t weight, uint32_t level_id, const struct rte_tm_node_params
> +*params,
>       struct rte_tm_error *error)
>  {
>       uint32_t level_of_node_id;
> @@ -1168,7 +1168,7 @@ ipn3ke_tm_node_add_check_mount(uint32_t
> tm_id,  static int  ipn3ke_tm_node_add(struct rte_eth_dev *dev,
>       uint32_t node_id, uint32_t parent_node_id, uint32_t priority,
> -     uint32_t weight, uint32_t level_id, struct rte_tm_node_params
> *params,
> +     uint32_t weight, uint32_t level_id, const struct rte_tm_node_params
> +*params,
>       struct rte_tm_error *error)
>  {
>       struct ipn3ke_hw *hw = IPN3KE_DEV_PRIVATE_TO_HW(dev); diff --
>  /** @internal Traffic manager node delete */
> --
> 2.43.0

Reviewed-by: Rosen Xu <[email protected]>

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