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Message-ID: <20230814125643.59334-4-linyunsheng@huawei.com>
Date: Mon, 14 Aug 2023 20:56:40 +0800
From: Yunsheng Lin <linyunsheng@...wei.com>
To: <davem@...emloft.net>, <kuba@...nel.org>, <pabeni@...hat.com>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Yunsheng Lin
<linyunsheng@...wei.com>, Lorenzo Bianconi <lorenzo@...nel.org>, Alexander
Duyck <alexander.duyck@...il.com>, Liang Chen <liangchen.linux@...il.com>,
Alexander Lobakin <aleksander.lobakin@...el.com>, Michael Chan
<michael.chan@...adcom.com>, Eric Dumazet <edumazet@...gle.com>, Yisen Zhuang
<yisen.zhuang@...wei.com>, Salil Mehta <salil.mehta@...wei.com>, Sunil
Goutham <sgoutham@...vell.com>, Geetha sowjanya <gakula@...vell.com>,
Subbaraya Sundeep <sbhatta@...vell.com>, hariprasad <hkelam@...vell.com>,
Felix Fietkau <nbd@....name>, Ryder Lee <ryder.lee@...iatek.com>, Shayne Chen
<shayne.chen@...iatek.com>, Sean Wang <sean.wang@...iatek.com>, Kalle Valo
<kvalo@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, Jesper
Dangaard Brouer <hawk@...nel.org>, Ilias Apalodimas
<ilias.apalodimas@...aro.org>, <linux-wireless@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org>
Subject: [PATCH net-next v6 3/6] page_pool: remove PP_FLAG_PAGE_FRAG
PP_FLAG_PAGE_FRAG is not really needed after pp_frag_count
handling is unified and page_pool_alloc_frag() is supported
in 32-bit arch with 64-bit DMA, so remove it.
Signed-off-by: Yunsheng Lin <linyunsheng@...wei.com>
CC: Lorenzo Bianconi <lorenzo@...nel.org>
CC: Alexander Duyck <alexander.duyck@...il.com>
CC: Liang Chen <liangchen.linux@...il.com>
CC: Alexander Lobakin <aleksander.lobakin@...el.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 --
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 3 +--
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c | 2 +-
drivers/net/wireless/mediatek/mt76/mac80211.c | 2 +-
include/net/page_pool/types.h | 8 ++------
net/core/page_pool.c | 3 ---
net/core/skbuff.c | 2 +-
7 files changed, 6 insertions(+), 16 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 7be917a8da48..60b699be0d9b 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -3249,8 +3249,6 @@ static int bnxt_alloc_rx_page_pool(struct bnxt *bp,
pp.napi = &rxr->bnapi->napi;
pp.dev = &bp->pdev->dev;
pp.dma_dir = DMA_BIDIRECTIONAL;
- if (PAGE_SIZE > BNXT_RX_PAGE_SIZE)
- pp.flags |= PP_FLAG_PAGE_FRAG;
rxr->page_pool = page_pool_create(&pp);
if (IS_ERR(rxr->page_pool)) {
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index eac2d0573241..ff0c219365f1 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -4926,8 +4926,7 @@ static void hns3_put_ring_config(struct hns3_nic_priv *priv)
static void hns3_alloc_page_pool(struct hns3_enet_ring *ring)
{
struct page_pool_params pp_params = {
- .flags = PP_FLAG_DMA_MAP | PP_FLAG_PAGE_FRAG |
- PP_FLAG_DMA_SYNC_DEV,
+ .flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV,
.order = hns3_page_order(ring),
.pool_size = ring->desc_num * hns3_buf_size(ring) /
(PAGE_SIZE << hns3_page_order(ring)),
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index dce3cea00032..edc6acebf369 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -1433,7 +1433,7 @@ int otx2_pool_init(struct otx2_nic *pfvf, u16 pool_id,
return 0;
}
- pp_params.flags = PP_FLAG_PAGE_FRAG | PP_FLAG_DMA_MAP;
+ pp_params.flags = PP_FLAG_DMA_MAP;
pp_params.pool_size = numptrs;
pp_params.nid = NUMA_NO_NODE;
pp_params.dev = pfvf->dev;
diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index d158320bc15d..fe7cc67b7ee2 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -566,7 +566,7 @@ int mt76_create_page_pool(struct mt76_dev *dev, struct mt76_queue *q)
{
struct page_pool_params pp_params = {
.order = 0,
- .flags = PP_FLAG_PAGE_FRAG,
+ .flags = 0,
.nid = NUMA_NO_NODE,
.dev = dev->dma_dev,
};
diff --git a/include/net/page_pool/types.h b/include/net/page_pool/types.h
index 079337c42aa6..4775cf95edb7 100644
--- a/include/net/page_pool/types.h
+++ b/include/net/page_pool/types.h
@@ -15,19 +15,15 @@
*/
#define PP_FLAG_DMA_SYNC_DEV BIT(1)
-/* for page frag feature */
-#define PP_FLAG_PAGE_FRAG BIT(2)
-
/* If set driver will do the page splitting itself. This is used to fail the
* page_pool creation because there is overlap issue between pp_frag_count and
* dma_addr_upper in 'struct page' for some arches with
* PAGE_POOL_DMA_USE_PP_FRAG_COUNT being true.
*/
-#define PP_FLAG_PAGE_SPLIT_IN_DRIVER BIT(3)
+#define PP_FLAG_PAGE_SPLIT_IN_DRIVER BIT(2)
#define PP_FLAG_ALL (PP_FLAG_DMA_MAP |\
PP_FLAG_DMA_SYNC_DEV |\
- PP_FLAG_PAGE_FRAG |\
PP_FLAG_PAGE_SPLIT_IN_DRIVER)
/*
@@ -53,7 +49,7 @@ struct pp_alloc_cache {
/**
* struct page_pool_params - page pool parameters
- * @flags: PP_FLAG_DMA_MAP, PP_FLAG_DMA_SYNC_DEV, PP_FLAG_PAGE_FRAG,
+ * @flags: PP_FLAG_DMA_MAP, PP_FLAG_DMA_SYNC_DEV,
* PP_FLAG_PAGE_SPLIT_IN_DRIVER
* @order: 2^order pages on allocation
* @pool_size: size of the ptr_ring
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index 653263fb5c85..d3b8efe98d5e 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -751,9 +751,6 @@ struct page *__page_pool_alloc_frag(struct page_pool *pool,
unsigned int max_size = PAGE_SIZE << pool->p.order;
struct page *page = pool->frag_page;
- if (WARN_ON(!(pool->p.flags & PP_FLAG_PAGE_FRAG))
- return NULL;
-
*offset = pool->frag_offset;
if (page && *offset + size > max_size) {
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 33fdf04d4334..4b90b6ed10b2 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -5709,7 +5709,7 @@ bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from,
/* In general, avoid mixing page_pool and non-page_pool allocated
* pages within the same SKB. Additionally avoid dealing with clones
* with page_pool pages, in case the SKB is using page_pool fragment
- * references (PP_FLAG_PAGE_FRAG). Since we only take full page
+ * references (page_pool_alloc_frag()). Since we only take full page
* references for cloned SKBs at the moment that would result in
* inconsistent reference counts.
* In theory we could take full references if @from is cloned and
--
2.33.0
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