linux-kernel - Re: [PATCH net-next 3/4] ice: switch: use a struct to pass packet template params

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Date:   Wed, 26 Jan 2022 21:39:38 +0000
From:   "Nguyen, Anthony L" <anthony.l.nguyen@...el.com>
To:     "Lobakin, Alexandr" <alexandr.lobakin@...el.com>,
        "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
CC:     "davem@...emloft.net" <davem@...emloft.net>,
        "Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
        "Fijalkowski, Maciej" <maciej.fijalkowski@...el.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "michal.swiatkowski@...ux.intel.com" 
        <michal.swiatkowski@...ux.intel.com>,
        "Szapar-Mudlaw, Martyna" <martyna.szapar-mudlaw@...el.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next 3/4] ice: switch: use a struct to pass packet
 template params

On Mon, 2022-01-24 at 18:31 +0100, Alexander Lobakin wrote:
> ice_find_dummy_packet() contains a lot of boilerplate code and a
> nice room for copy-paste mistakes.
> Instead of passing 3 separate pointers back and forth to get packet
> template (dummy) params, directly return a structure containing
> them. Then, use a macro to compose compound literals and avoid code
> duplication on return path.
> Now, dummy packet type/name is needed only once to return a full
> correct triple pkt-pkt_len-offsets, and those are all one-liners.
> 
> Signed-off-by: Alexander Lobakin <alexandr.lobakin@...el.com>

This isn't applying to next-queue.

<snip>
> @@ -4960,11 +4974,9 @@ ice_add_adv_recipe(struct ice_hw *hw, struct
> ice_adv_lkup_elem *lkups,
>   * @pkt_len: packet length of dummy packet
>   * @offsets: pointer to receive the pointer to the offsets for the
> packet
>   */
> -static void
> +static struct ice_dummy_pkt_profile
>  ice_find_dummy_packet(struct ice_adv_lkup_elem *lkups, u16
> lkups_cnt,
> -                     enum ice_sw_tunnel_type tun_type,
> -                     const u8 **pkt, u16 *pkt_len,
> -                     const struct ice_dummy_pkt_offsets **offsets)
> +                     enum ice_sw_tunnel_type tun_type)

kdoc needs to be updated here.

<snip>

>  /**
> @@ -5104,8 +5065,7 @@ ice_find_dummy_packet(struct ice_adv_lkup_elem
> *lkups, u16 lkups_cnt,
>  static int
>  ice_fill_adv_dummy_packet(struct ice_adv_lkup_elem *lkups, u16
> lkups_cnt,
>                           struct ice_aqc_sw_rules_elem *s_rule,
> -                         const u8 *dummy_pkt, u16 pkt_len,
> -                         const struct ice_dummy_pkt_offsets
> *offsets)
> +                         const struct ice_dummy_pkt_profile
> *profile)

Here as well.

Thanks,
Tony