netdev - RE: [PATCH v4 09/10] net: eth: altera: add msgdma prefetcher

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Date:   Tue, 14 Jul 2020 14:36:32 +0000
From:   "Ooi, Joyce" <joyce.ooi@...el.com>
To:     David Miller <davem@...emloft.net>
CC:     "thor.thayer@...ux.intel.com" <thor.thayer@...ux.intel.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dalon.westergreen@...ux.intel.com" 
        <dalon.westergreen@...ux.intel.com>,
        "Tan, Ley Foon" <ley.foon.tan@...el.com>,
        "See, Chin Liang" <chin.liang.see@...el.com>,
        "Nguyen, Dinh" <dinh.nguyen@...el.com>,
        "Westergreen, Dalon" <dalon.westergreen@...el.com>
Subject: RE: [PATCH v4 09/10] net: eth: altera: add msgdma prefetcher

> -----Original Message-----
> From: David Miller <davem@...emloft.net>
> Sent: Thursday, July 9, 2020 1:34 AM
> To: Ooi, Joyce <joyce.ooi@...el.com>
> Cc: thor.thayer@...ux.intel.com; kuba@...nel.org; netdev@...r.kernel.org;
> linux-kernel@...r.kernel.org; dalon.westergreen@...ux.intel.com; Tan, Ley
> Foon <ley.foon.tan@...el.com>; See, Chin Liang <chin.liang.see@...el.com>;
> Nguyen, Dinh <dinh.nguyen@...el.com>; Westergreen, Dalon
> <dalon.westergreen@...el.com>
> Subject: Re: [PATCH v4 09/10] net: eth: altera: add msgdma prefetcher
> 
> From: "Ooi, Joyce" <joyce.ooi@...el.com>
> Date: Wed,  8 Jul 2020 15:24:00 +0800
> 
> > +int msgdma_pref_initialize(struct altera_tse_private *priv) {
> > +	int i;
> > +	struct msgdma_pref_extended_desc *rx_descs;
> > +	struct msgdma_pref_extended_desc *tx_descs;
> > +	dma_addr_t rx_descsphys;
> > +	dma_addr_t tx_descsphys;
> 
> Reverse christmas tree please.
> 
> > +netdev_tx_t msgdma_pref_tx_buffer(struct altera_tse_private *priv,
> > +				  struct tse_buffer *buffer)
> > +{
> > +	u32 desc_entry = priv->tx_prod % (priv->tx_ring_size * 2);
> > +	struct msgdma_pref_extended_desc *tx_descs = priv->pref_txdesc;
> 
> Likewise.
> 
> > +u32 msgdma_pref_tx_completions(struct altera_tse_private *priv) {
> > +	u32 control;
> > +	u32 ready = 0;
> > +	u32 cons = priv->tx_cons;
> > +	u32 desc_ringsize = priv->tx_ring_size * 2;
> > +	u32 ringsize = priv->tx_ring_size;
> > +	u64 ns = 0;
> > +	struct msgdma_pref_extended_desc *cur;
> > +	struct tse_buffer *tx_buff;
> > +	struct skb_shared_hwtstamps shhwtstamp;
> > +	int i;
> 
> Likewise.
> 
> > +u32 msgdma_pref_rx_status(struct altera_tse_private *priv) {
> > +	u32 rxstatus = 0;
> > +	u32 pktlength;
> > +	u32 pktstatus;
> > +	u64 ns = 0;
> > +	u32 entry = priv->rx_cons % priv->rx_ring_size;
> > +	u32 desc_entry = priv->rx_prod % (priv->rx_ring_size * 2);
> > +	struct msgdma_pref_extended_desc *rx_descs = priv->pref_rxdesc;
> > +	struct skb_shared_hwtstamps *shhwtstamp = NULL;
> > +	struct tse_buffer *rx_buff = priv->rx_ring;
> 
> Likewise.
> 
> > +	} else if (priv->dmaops &&
> > +			   priv->dmaops->altera_dtype ==
> > +			   ALTERA_DTYPE_MSGDMA_PREF) {
> 
> This is not properly formatted.
> 
> On a multi-line conditional, every subsequent line after the first should align
> with the first column after the openning parenthesis of the first line.

Noted, will make the changes.