From: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
To: "Martinez, Ricardo" <ricardo.martinez@linux.intel.com>
Cc: Netdev <netdev@vger.kernel.org>,
linux-wireless@vger.kernel.org, kuba@kernel.org,
davem@davemloft.net, johannes@sipsolutions.net,
ryazanov.s.a@gmail.com, loic.poulain@linaro.org,
m.chetan.kumar@intel.com, chandrashekar.devegowda@intel.com,
linuxwwan@intel.com, chiranjeevi.rapolu@linux.intel.com,
haijun.liu@mediatek.com, amir.hanania@intel.com,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
dinesh.sharma@intel.com, eliot.lee@intel.com,
moises.veleta@intel.com, pierre-louis.bossart@intel.com,
muralidharan.sethuraman@intel.com,
Soumya.Prakash.Mishra@intel.com, sreehari.kancharla@intel.com
Subject: Re: [PATCH net-next v4 08/13] net: wwan: t7xx: Add data path interface
Date: Wed, 16 Feb 2022 16:36:16 +0200 (EET) [thread overview]
Message-ID: <92a244ef-eaf8-6e27-aa9-77e8f941b86@linux.intel.com> (raw)
In-Reply-To: <05b6a2dd-f485-ce4a-d508-e90f9304d016@linux.intel.com>
[-- Attachment #1: Type: text/plain, Size: 1314 bytes --]
On Tue, 15 Feb 2022, Martinez, Ricardo wrote:
> On 2/8/2022 12:19 AM, Ilpo Järvinen wrote:
> > On Thu, 13 Jan 2022, Ricardo Martinez wrote:
> >
> > > +/* SKB control buffer indexed values */
> > > +#define TX_CB_NETIF_IDX 0
> > > +#define TX_CB_QTYPE 1
> > > +#define TX_CB_DRB_CNT 2
> > The normal way of storing a struct to skb->cb area is:
> >
> > struct t7xx_skb_cb {
> > u8 netif_idx;
> > u8 qtype;
> > u8 drb_cnt;
> > };
> >
> > #define T7XX_SKB_CB(__skb) ((struct t7xx_skb_cb *)&((__skb)->cb[0]))
> >
> > However, there's only a single txqt/qtype (TXQ_TYPE_DEFAULT) in the
> > patchset? And it seems to me that drb_cnt is a value that could be always
> > derived using t7xx_get_drb_cnt_per_skb() from the skb rather than
> > stored?
>
> The next iteration will contain t7xx_tx_skb_cb and t7xx_rx_skb_cb structures.
Ah, I didn't even notice the other one. Why differentiate them? There's
enough space in cb area and netif_idx is in both anyway. (union inside
struct could be used if short on space and tx/rx differ but it is not
needed here now.)
> Also, q_number is going to be used instead of qtype.
>
> Only one queue is used but I think we can keep this code generic as it is
> straight forward (not like the drb_lack case), any thoughts?
I don't mind if you find it useful.
--
i.
next prev parent reply other threads:[~2022-02-16 14:36 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-14 1:06 [PATCH net-next v4 00/13] net: wwan: t7xx: PCIe driver for MediaTek M.2 modem Ricardo Martinez
2022-01-14 1:06 ` [PATCH net-next v4 01/13] list: Add list_next_entry_circular() and list_prev_entry_circular() Ricardo Martinez
2022-01-14 13:42 ` Andy Shevchenko
2022-01-14 1:06 ` [PATCH net-next v4 02/13] net: wwan: t7xx: Add control DMA interface Ricardo Martinez
2022-01-14 14:13 ` Andy Shevchenko
2022-01-18 14:13 ` Ilpo Järvinen
2022-01-18 22:22 ` Martinez, Ricardo
2022-01-19 9:52 ` Ilpo Järvinen
2022-01-19 19:04 ` Martinez, Ricardo
2022-02-11 0:25 ` Sergey Ryazanov
2022-02-16 2:24 ` Martinez, Ricardo
2022-02-10 13:50 ` Ilpo Järvinen
2022-01-14 1:06 ` [PATCH net-next v4 03/13] net: wwan: t7xx: Add core components Ricardo Martinez
2022-01-16 15:37 ` kernel test robot
2022-01-24 14:51 ` Ilpo Järvinen
2022-01-25 19:13 ` Martinez, Ricardo
2022-01-26 10:45 ` Ilpo Järvinen
2022-01-27 17:36 ` Ilpo Järvinen
2022-01-14 1:06 ` [PATCH net-next v4 04/13] net: wwan: t7xx: Add port proxy infrastructure Ricardo Martinez
2022-01-25 13:38 ` Ilpo Järvinen
2022-02-10 13:34 ` Ilpo Järvinen
2022-01-14 1:06 ` [PATCH net-next v4 05/13] net: wwan: t7xx: Add control port Ricardo Martinez
2022-01-27 10:40 ` Ilpo Järvinen
2022-01-27 14:53 ` Andy Shevchenko
2022-01-14 1:06 ` [PATCH net-next v4 06/13] net: wwan: t7xx: Add AT and MBIM WWAN ports Ricardo Martinez
2022-01-27 11:56 ` Ilpo Järvinen
2022-01-14 1:06 ` [PATCH net-next v4 07/13] net: wwan: t7xx: Data path HW layer Ricardo Martinez
2022-02-01 9:08 ` Ilpo Järvinen
2022-02-01 10:13 ` Ilpo Järvinen
2022-02-03 2:30 ` Martinez, Ricardo
2022-01-14 1:06 ` [PATCH net-next v4 08/13] net: wwan: t7xx: Add data path interface Ricardo Martinez
2022-02-03 14:23 ` Ilpo Järvinen
2022-02-08 8:19 ` Ilpo Järvinen
2022-02-16 2:17 ` Martinez, Ricardo
2022-02-16 14:36 ` Ilpo Järvinen [this message]
2022-02-22 18:40 ` Martinez, Ricardo
2022-01-14 1:06 ` [PATCH net-next v4 09/13] net: wwan: t7xx: Add WWAN network interface Ricardo Martinez
2022-02-10 10:45 ` Ilpo Järvinen
2022-01-14 1:06 ` [PATCH net-next v4 10/13] net: wwan: t7xx: Introduce power management support Ricardo Martinez
2022-02-10 10:58 ` Ilpo Järvinen
2022-01-14 1:06 ` [PATCH net-next v4 11/13] net: wwan: t7xx: Runtime PM Ricardo Martinez
2022-01-14 1:06 ` [PATCH net-next v4 12/13] net: wwan: t7xx: Device deep sleep lock/unlock Ricardo Martinez
2022-01-14 1:06 ` [PATCH net-next v4 13/13] net: wwan: t7xx: Add maintainers and documentation Ricardo Martinez
2022-01-15 14:53 ` [PATCH net-next v4 00/13] net: wwan: t7xx: PCIe driver for MediaTek M.2 modem Loic Poulain
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