mirror of
https://github.com/Ysurac/openmptcprouter.git
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67 lines
2.3 KiB
Diff
67 lines
2.3 KiB
Diff
From 884d2b845477cd0a18302444dc20fe2d9a01743e Mon Sep 17 00:00:00 2001
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From: David Wu <david.wu@rock-chips.com>
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Date: Mon, 13 Dec 2021 19:15:15 +0800
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Subject: [PATCH] net: stmmac: Add GFP_DMA32 for rx buffers if no 64 capability
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Use page_pool_alloc_pages instead of page_pool_dev_alloc_pages, which
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can give the gfp parameter, in the case of not supporting 64-bit width,
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using 32-bit address memory can reduce a copy from swiotlb.
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Signed-off-by: David Wu <david.wu@rock-chips.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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.../net/ethernet/stmicro/stmmac/stmmac_main.c | 16 ++++++++++++----
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1 file changed, 12 insertions(+), 4 deletions(-)
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--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
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@@ -1472,16 +1472,20 @@ static int stmmac_init_rx_buffers(struct
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{
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struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
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struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
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+ gfp_t gfp = (GFP_ATOMIC | __GFP_NOWARN);
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+
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+ if (priv->dma_cap.addr64 <= 32)
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+ gfp |= GFP_DMA32;
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if (!buf->page) {
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- buf->page = page_pool_dev_alloc_pages(rx_q->page_pool);
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+ buf->page = page_pool_alloc_pages(rx_q->page_pool, gfp);
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if (!buf->page)
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return -ENOMEM;
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buf->page_offset = stmmac_rx_offset(priv);
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}
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if (priv->sph && !buf->sec_page) {
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- buf->sec_page = page_pool_dev_alloc_pages(rx_q->page_pool);
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+ buf->sec_page = page_pool_alloc_pages(rx_q->page_pool, gfp);
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if (!buf->sec_page)
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return -ENOMEM;
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@@ -4618,6 +4622,10 @@ static inline void stmmac_rx_refill(stru
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struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
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int dirty = stmmac_rx_dirty(priv, queue);
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unsigned int entry = rx_q->dirty_rx;
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+ gfp_t gfp = (GFP_ATOMIC | __GFP_NOWARN);
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+
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+ if (priv->dma_cap.addr64 <= 32)
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+ gfp |= GFP_DMA32;
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while (dirty-- > 0) {
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struct stmmac_rx_buffer *buf = &rx_q->buf_pool[entry];
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@@ -4630,13 +4638,13 @@ static inline void stmmac_rx_refill(stru
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p = rx_q->dma_rx + entry;
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if (!buf->page) {
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- buf->page = page_pool_dev_alloc_pages(rx_q->page_pool);
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+ buf->page = page_pool_alloc_pages(rx_q->page_pool, gfp);
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if (!buf->page)
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break;
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}
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if (priv->sph && !buf->sec_page) {
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- buf->sec_page = page_pool_dev_alloc_pages(rx_q->page_pool);
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+ buf->sec_page = page_pool_alloc_pages(rx_q->page_pool, gfp);
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if (!buf->sec_page)
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break;
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