[PATCH net-next 2/7] net: stmmac: introduce dma_recycle_rx_skbufs for stmmac_reinit_rx_buffers

From: Ong Boon Leong <boon.leong.ong@intel.com>
To: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	Alexandre Torgue <alexandre.torgue@st.com>,
	Jose Abreu <joabreu@synopsys.com>,
	"David S . Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Jesper Dangaard Brouer <hawk@kernel.org>,
	John Fastabend <john.fastabend@gmail.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Andrii Nakryiko <andrii@kernel.org>,
	Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
	Yonghong Song <yhs@fb.com>, KP Singh <kpsingh@kernel.org>,
	netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
	Ong Boon Leong <boon.leong.ong@intel.com>
Subject: [PATCH net-next 2/7] net: stmmac: introduce dma_recycle_rx_skbufs for stmmac_reinit_rx_buffers
Date: Mon, 12 Apr 2021 23:41:25 +0800	[thread overview]
Message-ID: <20210412154130.20742-3-boon.leong.ong@intel.com> (raw)
In-Reply-To: <20210412154130.20742-1-boon.leong.ong@intel.com>

Rearrange RX buffer page_pool recycling logics into dma_recycle_rx_skbufs,
so that we prepare stmmac_reinit_rx_buffers() for XSK pool expansion.

Signed-off-by: Ong Boon Leong <boon.leong.ong@intel.com>
---
 .../net/ethernet/stmicro/stmmac/stmmac_main.c | 44 ++++++++++++-------
 1 file changed, 27 insertions(+), 17 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index f6d3d26ce45a..a6c3414fd231 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1512,6 +1512,31 @@ static int stmmac_alloc_rx_buffers(struct stmmac_priv *priv, u32 queue,
 	return 0;
 }
 
+/**
+ * dma_recycle_rx_skbufs - recycle RX dma buffers
+ * @priv: private structure
+ * @queue: RX queue index
+ */
+static void dma_recycle_rx_skbufs(struct stmmac_priv *priv, u32 queue)
+{
+	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
+	int i;
+
+	for (i = 0; i < priv->dma_rx_size; i++) {
+		struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
+
+		if (buf->page) {
+			page_pool_recycle_direct(rx_q->page_pool, buf->page);
+			buf->page = NULL;
+		}
+
+		if (priv->sph && buf->sec_page) {
+			page_pool_recycle_direct(rx_q->page_pool, buf->sec_page);
+			buf->sec_page = NULL;
+		}
+	}
+}
+
 /**
  * stmmac_reinit_rx_buffers - reinit the RX descriptor buffer.
  * @priv: driver private structure
@@ -1524,23 +1549,8 @@ static void stmmac_reinit_rx_buffers(struct stmmac_priv *priv)
 	u32 queue;
 	int i;
 
-	for (queue = 0; queue < rx_count; queue++) {
-		struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-
-		for (i = 0; i < priv->dma_rx_size; i++) {
-			struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
-
-			if (buf->page) {
-				page_pool_recycle_direct(rx_q->page_pool, buf->page);
-				buf->page = NULL;
-			}
-
-			if (priv->sph && buf->sec_page) {
-				page_pool_recycle_direct(rx_q->page_pool, buf->sec_page);
-				buf->sec_page = NULL;
-			}
-		}
-	}
+	for (queue = 0; queue < rx_count; queue++)
+		dma_recycle_rx_skbufs(priv, queue);
 
 	for (queue = 0; queue < rx_count; queue++) {
 		struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
-- 
2.25.1

