From: Jesper Dangaard Brouer <brouer@redhat.com>
To: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Joao Pinto <Joao.Pinto@synopsys.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
Maxime Ripard <maxime.ripard@bootlin.com>,
netdev@vger.kernel.org,
Ilias Apalodimas <ilias.apalodimas@linaro.org>,
linux-kernel@vger.kernel.org,
"David S . Miller" <davem@davemloft.net>,
Chen-Yu Tsai <wens@csie.org>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
brouer@redhat.com, Giuseppe Cavallaro <peppe.cavallaro@st.com>,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH net-next 3/3] net: stmmac: Introducing support for Page Pool
Date: Thu, 4 Jul 2019 11:48:04 +0200 [thread overview]
Message-ID: <20190704114804.10c38b42@carbon> (raw)
In-Reply-To: <1b254bb7fc6044c5e6e2fdd9e00088d1d13a808b.1562149883.git.joabreu@synopsys.com>
On Wed, 3 Jul 2019 12:37:50 +0200
Jose Abreu <Jose.Abreu@synopsys.com> wrote:
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -1197,26 +1197,14 @@ static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p,
> int i, gfp_t flags, u32 queue)
> {
> struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
> - struct sk_buff *skb;
> + struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
>
> - skb = __netdev_alloc_skb_ip_align(priv->dev, priv->dma_buf_sz, flags);
> - if (!skb) {
> - netdev_err(priv->dev,
> - "%s: Rx init fails; skb is NULL\n", __func__);
> + buf->page = page_pool_dev_alloc_pages(rx_q->page_pool);
> + if (!buf->page)
> return -ENOMEM;
> - }
> - rx_q->rx_skbuff[i] = skb;
> - rx_q->rx_skbuff_dma[i] = dma_map_single(priv->device, skb->data,
> - priv->dma_buf_sz,
> - DMA_FROM_DEVICE);
> - if (dma_mapping_error(priv->device, rx_q->rx_skbuff_dma[i])) {
> - netdev_err(priv->dev, "%s: DMA mapping error\n", __func__);
> - dev_kfree_skb_any(skb);
> - return -EINVAL;
> - }
> -
> - stmmac_set_desc_addr(priv, p, rx_q->rx_skbuff_dma[i]);
>
> + buf->addr = buf->page->dma_addr;
We/Ilias added a wrapper/helper function for accessing dma_addr, as it
will help us later identifying users.
page_pool_get_dma_addr(page)
> + stmmac_set_desc_addr(priv, p, buf->addr);
> if (priv->dma_buf_sz == BUF_SIZE_16KiB)
> stmmac_init_desc3(priv, p);
>
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
LinkedIn: http://www.linkedin.com/in/brouer
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next prev parent reply other threads:[~2019-07-04 9:48 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-03 10:37 [PATCH net-next 0/3] net: stmmac: Some performance improvements and a fix Jose Abreu
2019-07-03 10:37 ` [PATCH net-next 1/3] net: stmmac: Implement RX Coalesce Frames setting Jose Abreu
2019-07-03 20:41 ` Jakub Kicinski
2019-07-03 10:37 ` [PATCH net-next 2/3] net: stmmac: Fix descriptors address being in > 32 bits address space Jose Abreu
2019-07-03 10:37 ` [PATCH net-next 3/3] net: stmmac: Introducing support for Page Pool Jose Abreu
2019-07-03 10:40 ` Jose Abreu
2019-07-04 9:39 ` Jesper Dangaard Brouer
2019-07-04 14:45 ` Jose Abreu
2019-07-04 15:09 ` Jesper Dangaard Brouer
2019-07-04 15:18 ` Jose Abreu
2019-07-04 15:33 ` Jesper Dangaard Brouer
2019-07-04 9:48 ` Jesper Dangaard Brouer [this message]
2019-07-04 10:00 ` Jesper Dangaard Brouer
2019-07-04 10:13 ` Jose Abreu
2019-07-04 11:11 ` Ilias Apalodimas
2019-07-04 11:54 ` Jesper Dangaard Brouer
2019-07-04 12:04 ` Ilias Apalodimas
2019-07-04 12:59 ` Jose Abreu
2019-07-04 13:06 ` Ilias Apalodimas
2019-07-04 10:30 ` Ilias Apalodimas
2019-07-04 12:14 ` Arnd Bergmann
2019-07-04 12:49 ` Ilias Apalodimas
2019-07-17 18:58 ` Jon Hunter
2019-07-18 7:29 ` Jose Abreu
2019-07-18 7:48 ` Jose Abreu
2019-07-18 9:16 ` Jon Hunter
2019-07-19 7:51 ` Jose Abreu
2019-07-19 8:37 ` Jon Hunter
2019-07-19 8:44 ` Jose Abreu
2019-07-19 8:49 ` Jon Hunter
2019-07-19 10:25 ` Jose Abreu
2019-07-19 12:28 ` Jose Abreu
2019-07-19 13:33 ` Jon Hunter
2019-07-19 12:30 ` Jon Hunter
2019-07-19 12:32 ` Jose Abreu
[not found] ` <25512348-5b98-aeb7-a6fb-f90376e66a84@nvidia.com>
2019-07-22 7:23 ` Jose Abreu
2019-07-22 9:37 ` Jon Hunter
2019-07-22 9:47 ` Jose Abreu
2019-07-22 9:57 ` Jose Abreu
2019-07-22 10:27 ` Jon Hunter
2019-07-22 10:18 ` Ilias Apalodimas
2019-07-22 11:11 ` Lars Persson
2019-07-22 11:39 ` Jose Abreu
2019-07-22 12:05 ` Jon Hunter
2019-07-22 14:04 ` Jose Abreu
2019-07-23 8:14 ` Jose Abreu
2019-07-23 10:01 ` Jon Hunter
2019-07-23 10:07 ` Jose Abreu
2019-07-23 10:29 ` Robin Murphy
2019-07-23 11:22 ` Jose Abreu
2019-07-23 12:09 ` Jon Hunter
2019-07-23 13:19 ` Robin Murphy
2019-07-23 21:39 ` Jon Hunter
2019-07-24 10:03 ` Robin Murphy
2019-07-23 18:51 ` David Miller
2019-07-24 8:54 ` Ilias Apalodimas
2019-07-24 9:43 ` Jose Abreu
2019-07-24 9:53 ` Ilias Apalodimas
2019-07-24 10:04 ` Jose Abreu
2019-07-24 11:10 ` Jon Hunter
2019-07-24 11:34 ` Jose Abreu
2019-07-24 11:58 ` Jon Hunter
2019-07-25 7:44 ` Jose Abreu
2019-07-25 9:45 ` Jon Hunter
2019-07-25 11:39 ` Ilias Apalodimas
2019-07-23 10:38 ` Jon Hunter
2019-07-23 10:49 ` Jose Abreu
2019-07-23 11:58 ` Jon Hunter
2019-07-23 12:51 ` Jose Abreu
2019-07-23 13:34 ` Jon Hunter
2019-07-29 9:45 ` Mikko Perttunen
2019-07-25 13:20 ` Jon Hunter
2019-07-25 13:26 ` Jose Abreu
2019-07-25 14:25 ` Jon Hunter
2019-07-25 15:12 ` Jose Abreu
2019-07-26 14:11 ` Jon Hunter
2019-07-27 15:56 ` Jose Abreu
2019-07-29 8:16 ` Jose Abreu
2019-07-29 10:55 ` Jon Hunter
2019-07-29 11:29 ` Jose Abreu
2019-07-29 11:52 ` Robin Murphy
2019-07-29 14:08 ` Jose Abreu
2019-07-29 21:33 ` Jon Hunter
2019-07-30 9:39 ` Jose Abreu
2019-07-30 13:36 ` Jon Hunter
2019-07-30 13:58 ` Jose Abreu
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