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From: Yunsheng Lin <linyunsheng@huawei.com>
To: <davem@davemloft.net>, <kuba@kernel.org>
Cc: <alexander.duyck@gmail.com>, <linux@armlinux.org.uk>,
	<mw@semihalf.com>, <linuxarm@openeuler.org>,
	<yisen.zhuang@huawei.com>, <salil.mehta@huawei.com>,
	<thomas.petazzoni@bootlin.com>, <hawk@kernel.org>,
	<ilias.apalodimas@linaro.org>, <ast@kernel.org>,
	<daniel@iogearbox.net>, <john.fastabend@gmail.com>,
	<akpm@linux-foundation.org>, <peterz@infradead.org>,
	<will@kernel.org>, <willy@infradead.org>, <vbabka@suse.cz>,
	<fenghua.yu@intel.com>, <guro@fb.com>, <peterx@redhat.com>,
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	<cong.wang@bytedance.com>, <haokexin@gmail.com>,
	<nogikh@google.com>, <elver@google.com>, <yhs@fb.com>,
	<kpsingh@kernel.org>, <andrii@kernel.org>, <kafai@fb.com>,
	<songliubraving@fb.com>, <netdev@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <bpf@vger.kernel.org>,
	<chenhao288@hisilicon.com>, <edumazet@google.com>,
	<yoshfuji@linux-ipv6.org>, <dsahern@kernel.org>,
	<memxor@gmail.com>, <linux@rempel-privat.de>,
	<atenart@kernel.org>, <weiwan@google.com>, <ap420073@gmail.com>,
	<arnd@arndb.de>, <mathew.j.martineau@linux.intel.com>,
	<aahringo@redhat.com>, <ceggers@arri.de>, <yangbo.lu@nxp.com>,
	<fw@strlen.de>, <xiangxia.m.yue@gmail.com>,
	<linmiaohe@huawei.com>
Subject: [PATCH RFC 6/7] net: hns3: support tx recycling in the hns3 driver
Date: Wed, 18 Aug 2021 11:32:22 +0800	[thread overview]
Message-ID: <1629257542-36145-7-git-send-email-linyunsheng@huawei.com> (raw)
In-Reply-To: <1629257542-36145-1-git-send-email-linyunsheng@huawei.com>

Use netif_recyclable_napi_add() to register page pool to
the NAPI instance, and avoid doing the DMA mapping/unmapping
when the page is from page pool.

Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 32 +++++++++++++++----------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index fcbeb1f..ab86566 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1689,12 +1689,18 @@ static int hns3_map_and_fill_desc(struct hns3_enet_ring *ring, void *priv,
 		return 0;
 	} else {
 		skb_frag_t *frag = (skb_frag_t *)priv;
+		struct page *page = skb_frag_page(frag);
 
 		size = skb_frag_size(frag);
 		if (!size)
 			return 0;
 
-		dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
+		if (skb_frag_is_pp(frag) && page->pp->p.dev == dev) {
+			dma = page_pool_get_dma_addr(page) + skb_frag_off(frag);
+			type = DESC_TYPE_PP_FRAG;
+		} else {
+			dma = skb_frag_dma_map(dev, frag, 0, size, DMA_TO_DEVICE);
+		}
 	}
 
 	if (unlikely(dma_mapping_error(dev, dma))) {
@@ -4525,7 +4531,7 @@ static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv)
 		ret = hns3_get_vector_ring_chain(tqp_vector,
 						 &vector_ring_chain);
 		if (ret)
-			goto map_ring_fail;
+			return ret;
 
 		ret = h->ae_algo->ops->map_ring_to_vector(h,
 			tqp_vector->vector_irq, &vector_ring_chain);
@@ -4533,19 +4539,10 @@ static int hns3_nic_init_vector_data(struct hns3_nic_priv *priv)
 		hns3_free_vector_ring_chain(tqp_vector, &vector_ring_chain);
 
 		if (ret)
-			goto map_ring_fail;
-
-		netif_napi_add(priv->netdev, &tqp_vector->napi,
-			       hns3_nic_common_poll, NAPI_POLL_WEIGHT);
+			return ret;
 	}
 
 	return 0;
-
-map_ring_fail:
-	while (i--)
-		netif_napi_del(&priv->tqp_vector[i].napi);
-
-	return ret;
 }
 
 static void hns3_nic_init_coal_cfg(struct hns3_nic_priv *priv)
@@ -4754,7 +4751,7 @@ static void hns3_alloc_page_pool(struct hns3_enet_ring *ring)
 				(PAGE_SIZE << hns3_page_order(ring)),
 		.nid = dev_to_node(ring_to_dev(ring)),
 		.dev = ring_to_dev(ring),
-		.dma_dir = DMA_FROM_DEVICE,
+		.dma_dir = DMA_BIDIRECTIONAL,
 		.offset = 0,
 		.max_len = PAGE_SIZE << hns3_page_order(ring),
 	};
@@ -4923,6 +4920,15 @@ int hns3_init_all_ring(struct hns3_nic_priv *priv)
 		u64_stats_init(&priv->ring[i].syncp);
 	}
 
+	for (i = 0; i < priv->vector_num; i++) {
+		struct hns3_enet_tqp_vector *tqp_vector;
+
+		tqp_vector = &priv->tqp_vector[i];
+		netif_recyclable_napi_add(priv->netdev, &tqp_vector->napi,
+					  hns3_nic_common_poll, NAPI_POLL_WEIGHT,
+					  tqp_vector->rx_group.ring->page_pool);
+	}
+
 	return 0;
 
 out_when_alloc_ring_memory:
-- 
2.7.4


  parent reply	other threads:[~2021-08-18  3:33 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-18  3:32 [PATCH RFC 0/7] add socket to netdev page frag recycling support Yunsheng Lin
2021-08-18  3:32 ` [PATCH RFC 1/7] page_pool: refactor the page pool to support multi alloc context Yunsheng Lin
2021-08-18  3:32 ` [PATCH RFC 2/7] skbuff: add interface to manipulate frag count for tx recycling Yunsheng Lin
2021-08-18  3:32 ` [PATCH RFC 3/7] net: add NAPI api to register and retrieve the page pool ptr Yunsheng Lin
2021-08-18  3:32 ` [PATCH RFC 4/7] net: pfrag_pool: add pfrag pool support based on page pool Yunsheng Lin
2021-08-18  3:32 ` [PATCH RFC 5/7] sock: support refilling pfrag from pfrag_pool Yunsheng Lin
2021-08-18  3:32 ` Yunsheng Lin [this message]
2021-08-18  8:57 ` [PATCH RFC 0/7] add socket to netdev page frag recycling support Eric Dumazet
2021-08-18  9:36   ` Yunsheng Lin
2021-08-23  9:25     ` [Linuxarm] " Yunsheng Lin
2021-08-23 15:04       ` Eric Dumazet
2021-08-24  8:03         ` Yunsheng Lin
2021-08-25 16:29         ` David Ahern
2021-08-25 16:32           ` Eric Dumazet
2021-08-25 16:38             ` David Ahern
2021-08-25 17:24               ` Eric Dumazet
2021-08-26  4:05                 ` David Ahern
2021-08-18 22:05 ` David Ahern
2021-08-19  8:18   ` Yunsheng Lin
2021-08-20 14:35     ` David Ahern
2021-08-23  3:32       ` Yunsheng Lin
2021-08-24  3:34         ` David Ahern
2021-08-24  8:41           ` Yunsheng Lin

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