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From 85720e04d9af0b77f8092b12a06661a8d459d4a0 Mon Sep 17 00:00:00 2001
From: Jiawen Wu <jiawenwu@trustnetic.com>
Date: Wed, 25 Jun 2025 10:39:24 +0800
Subject: net: libwx: fix the creation of page_pool
From: Jiawen Wu <jiawenwu@trustnetic.com>
commit 85720e04d9af0b77f8092b12a06661a8d459d4a0 upstream.
'rx_ring->size' means the count of ring descriptors multiplied by the
size of one descriptor. When increasing the count of ring descriptors,
it may exceed the limit of pool size.
[ 864.209610] page_pool_create_percpu() gave up with errno -7
[ 864.209613] txgbe 0000:11:00.0: Page pool creation failed: -7
Fix to set the pool_size to the count of ring descriptors.
Fixes: 850b971110b2 ("net: libwx: Allocate Rx and Tx resources")
Cc: stable@vger.kernel.org
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Link: https://patch.msgid.link/434C72BFB40E350A+20250625023924.21821-1-jiawenwu@trustnetic.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/wangxun/libwx/wx_lib.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -2368,7 +2368,7 @@ static int wx_alloc_page_pool(struct wx_
struct page_pool_params pp_params = {
.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV,
.order = 0,
- .pool_size = rx_ring->size,
+ .pool_size = rx_ring->count,
.nid = dev_to_node(rx_ring->dev),
.dev = rx_ring->dev,
.dma_dir = DMA_FROM_DEVICE,
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