generic: 5.15: backport stmmac patches to change MTU

Backport stmmac patches to change MTU while the interface is up.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

5 files changed, 2702 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.15/775-v6.0-01-net-ethernet-stmicro-stmmac-move-queue-reset-to-dedi.patch b/target/linux/generic/backport-5.15/775-v6.0-01-net-ethernet-stmicro-stmmac-move-queue-reset-to-dedi.patch
new file mode 100644
index 0000000000..c93bc3b77d
--- /dev/null
+++ b/target/linux/generic/backport-5.15/775-v6.0-01-net-ethernet-stmicro-stmmac-move-queue-reset-to-dedi.patch
@@ -0,0 +1,142 @@
+From f9ec5723c3dbfcede9c7b0dcdf85e401ce16316c Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Sat, 23 Jul 2022 16:29:29 +0200
+Subject: [PATCH 1/5] net: ethernet: stmicro: stmmac: move queue reset to
+ dedicated functions
+
+Move queue reset to dedicated functions. This aside from a simple
+cleanup is also required to allocate a dma conf without resetting the tx
+queue while the device is temporarily detached as now the reset is not
+part of the dma init function and can be done later in the code flow.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ .../net/ethernet/stmicro/stmmac/stmmac_main.c | 59 ++++++++++---------
+ 1 file changed, 31 insertions(+), 28 deletions(-)
+
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+@@ -130,6 +130,9 @@ static irqreturn_t stmmac_mac_interrupt(
+ static irqreturn_t stmmac_safety_interrupt(int irq, void *dev_id);
+ static irqreturn_t stmmac_msi_intr_tx(int irq, void *data);
+ static irqreturn_t stmmac_msi_intr_rx(int irq, void *data);
++static void stmmac_reset_rx_queue(struct stmmac_priv *priv, u32 queue);
++static void stmmac_reset_tx_queue(struct stmmac_priv *priv, u32 queue);
++static void stmmac_reset_queues_param(struct stmmac_priv *priv);
+ static void stmmac_tx_timer_arm(struct stmmac_priv *priv, u32 queue);
+ static void stmmac_flush_tx_descriptors(struct stmmac_priv *priv, int queue);
+ 
+@@ -1696,9 +1699,6 @@ static int __init_dma_rx_desc_rings(stru
+ 			return -ENOMEM;
+ 	}
+ 
+-	rx_q->cur_rx = 0;
+-	rx_q->dirty_rx = 0;
+-
+ 	/* Setup the chained descriptor addresses */
+ 	if (priv->mode == STMMAC_CHAIN_MODE) {
+ 		if (priv->extend_desc)
+@@ -1804,12 +1804,6 @@ static int __init_dma_tx_desc_rings(stru
+ 		tx_q->tx_skbuff[i] = NULL;
+ 	}
+ 
+-	tx_q->dirty_tx = 0;
+-	tx_q->cur_tx = 0;
+-	tx_q->mss = 0;
+-
+-	netdev_tx_reset_queue(netdev_get_tx_queue(priv->dev, queue));
+-
+ 	return 0;
+ }
+ 
+@@ -2678,10 +2672,7 @@ static void stmmac_tx_err(struct stmmac_
+ 	stmmac_stop_tx_dma(priv, chan);
+ 	dma_free_tx_skbufs(priv, chan);
+ 	stmmac_clear_tx_descriptors(priv, chan);
+-	tx_q->dirty_tx = 0;
+-	tx_q->cur_tx = 0;
+-	tx_q->mss = 0;
+-	netdev_tx_reset_queue(netdev_get_tx_queue(priv->dev, chan));
++	stmmac_reset_tx_queue(priv, chan);
+ 	stmmac_init_tx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+ 			    tx_q->dma_tx_phy, chan);
+ 	stmmac_start_tx_dma(priv, chan);
+@@ -3756,6 +3747,8 @@ static int stmmac_open(struct net_device
+ 		goto init_error;
+ 	}
+ 
++	stmmac_reset_queues_param(priv);
++
+ 	ret = stmmac_hw_setup(dev, true);
+ 	if (ret < 0) {
+ 		netdev_err(priv->dev, "%s: Hw setup failed\n", __func__);
+@@ -6395,6 +6388,7 @@ void stmmac_enable_rx_queue(struct stmma
+ 		return;
+ 	}
+ 
++	stmmac_reset_rx_queue(priv, queue);
+ 	stmmac_clear_rx_descriptors(priv, queue);
+ 
+ 	stmmac_init_rx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+@@ -6456,6 +6450,7 @@ void stmmac_enable_tx_queue(struct stmma
+ 		return;
+ 	}
+ 
++	stmmac_reset_tx_queue(priv, queue);
+ 	stmmac_clear_tx_descriptors(priv, queue);
+ 
+ 	stmmac_init_tx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+@@ -7383,6 +7378,25 @@ int stmmac_suspend(struct device *dev)
+ }
+ EXPORT_SYMBOL_GPL(stmmac_suspend);
+ 
++static void stmmac_reset_rx_queue(struct stmmac_priv *priv, u32 queue)
++{
++	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++
++	rx_q->cur_rx = 0;
++	rx_q->dirty_rx = 0;
++}
++
++static void stmmac_reset_tx_queue(struct stmmac_priv *priv, u32 queue)
++{
++	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++
++	tx_q->cur_tx = 0;
++	tx_q->dirty_tx = 0;
++	tx_q->mss = 0;
++
++	netdev_tx_reset_queue(netdev_get_tx_queue(priv->dev, queue));
++}
++
+ /**
+  * stmmac_reset_queues_param - reset queue parameters
+  * @priv: device pointer
+@@ -7393,22 +7407,11 @@ static void stmmac_reset_queues_param(st
+ 	u32 tx_cnt = priv->plat->tx_queues_to_use;
+ 	u32 queue;
+ 
+-	for (queue = 0; queue < rx_cnt; queue++) {
+-		struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	for (queue = 0; queue < rx_cnt; queue++)
++		stmmac_reset_rx_queue(priv, queue);
+ 
+-		rx_q->cur_rx = 0;
+-		rx_q->dirty_rx = 0;
+-	}
+-
+-	for (queue = 0; queue < tx_cnt; queue++) {
+-		struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
+-
+-		tx_q->cur_tx = 0;
+-		tx_q->dirty_tx = 0;
+-		tx_q->mss = 0;
+-
+-		netdev_tx_reset_queue(netdev_get_tx_queue(priv->dev, queue));
+-	}
++	for (queue = 0; queue < tx_cnt; queue++)
++		stmmac_reset_tx_queue(priv, queue);
+ }
+ 
+ /**
diff --git a/target/linux/generic/backport-5.15/775-v6.0-02-net-ethernet-stmicro-stmmac-first-disable-all-queues.patch b/target/linux/generic/backport-5.15/775-v6.0-02-net-ethernet-stmicro-stmmac-first-disable-all-queues.patch
new file mode 100644
index 0000000000..e73422636c
--- /dev/null
+++ b/target/linux/generic/backport-5.15/775-v6.0-02-net-ethernet-stmicro-stmmac-first-disable-all-queues.patch
@@ -0,0 +1,37 @@
+From 7028471edb646bfc532fec0973e50e784cdcb7c6 Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Sat, 23 Jul 2022 16:29:30 +0200
+Subject: [PATCH 2/5] net: ethernet: stmicro: stmmac: first disable all queues
+ and disconnect in release
+
+Disable all queues and disconnect before tx_disable in stmmac_release to
+prevent a corner case where packet may be still queued at the same time
+tx_disable is called resulting in kernel panic if some packet still has
+to be processed.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+@@ -3808,8 +3808,6 @@ static int stmmac_release(struct net_dev
+ 	struct stmmac_priv *priv = netdev_priv(dev);
+ 	u32 chan;
+ 
+-	netif_tx_disable(dev);
+-
+ 	if (device_may_wakeup(priv->device))
+ 		phylink_speed_down(priv->phylink, false);
+ 	/* Stop and disconnect the PHY */
+@@ -3821,6 +3819,8 @@ static int stmmac_release(struct net_dev
+ 	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++)
+ 		hrtimer_cancel(&priv->tx_queue[chan].txtimer);
+ 
++	netif_tx_disable(dev);
++
+ 	/* Free the IRQ lines */
+ 	stmmac_free_irq(dev, REQ_IRQ_ERR_ALL, 0);
+ 
diff --git a/target/linux/generic/backport-5.15/775-v6.0-03-net-ethernet-stmicro-stmmac-move-dma-conf-to-dedicat.patch b/target/linux/generic/backport-5.15/775-v6.0-03-net-ethernet-stmicro-stmmac-move-dma-conf-to-dedicat.patch
new file mode 100644
index 0000000000..5cb2663c82
--- /dev/null
+++ b/target/linux/generic/backport-5.15/775-v6.0-03-net-ethernet-stmicro-stmmac-move-dma-conf-to-dedicat.patch
@@ -0,0 +1,1289 @@
+From 8531c80800c10e8ef7952022326c2f983e1314bf Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Sat, 23 Jul 2022 16:29:31 +0200
+Subject: [PATCH 3/5] net: ethernet: stmicro: stmmac: move dma conf to
+ dedicated struct
+
+Move dma buf conf to dedicated struct. This in preparation for code
+rework that will permit to allocate separate dma_conf without affecting
+the priv struct.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ .../net/ethernet/stmicro/stmmac/chain_mode.c  |   6 +-
+ .../net/ethernet/stmicro/stmmac/ring_mode.c   |   4 +-
+ drivers/net/ethernet/stmicro/stmmac/stmmac.h  |  21 +-
+ .../ethernet/stmicro/stmmac/stmmac_ethtool.c  |   4 +-
+ .../net/ethernet/stmicro/stmmac/stmmac_main.c | 286 +++++++++---------
+ .../stmicro/stmmac/stmmac_selftests.c         |   8 +-
+ .../net/ethernet/stmicro/stmmac/stmmac_tc.c   |   6 +-
+ 7 files changed, 172 insertions(+), 163 deletions(-)
+
+--- a/drivers/net/ethernet/stmicro/stmmac/chain_mode.c
++++ b/drivers/net/ethernet/stmicro/stmmac/chain_mode.c
+@@ -46,7 +46,7 @@ static int jumbo_frm(void *p, struct sk_
+ 
+ 	while (len != 0) {
+ 		tx_q->tx_skbuff[entry] = NULL;
+-		entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
++		entry = STMMAC_GET_ENTRY(entry, priv->dma_conf.dma_tx_size);
+ 		desc = tx_q->dma_tx + entry;
+ 
+ 		if (len > bmax) {
+@@ -137,7 +137,7 @@ static void refill_desc3(void *priv_ptr,
+ 		 */
+ 		p->des3 = cpu_to_le32((unsigned int)(rx_q->dma_rx_phy +
+ 				      (((rx_q->dirty_rx) + 1) %
+-				       priv->dma_rx_size) *
++				       priv->dma_conf.dma_rx_size) *
+ 				      sizeof(struct dma_desc)));
+ }
+ 
+@@ -155,7 +155,7 @@ static void clean_desc3(void *priv_ptr,
+ 		 */
+ 		p->des3 = cpu_to_le32((unsigned int)((tx_q->dma_tx_phy +
+ 				      ((tx_q->dirty_tx + 1) %
+-				       priv->dma_tx_size))
++				       priv->dma_conf.dma_tx_size))
+ 				      * sizeof(struct dma_desc)));
+ }
+ 
+--- a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
++++ b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
+@@ -51,7 +51,7 @@ static int jumbo_frm(void *p, struct sk_
+ 		stmmac_prepare_tx_desc(priv, desc, 1, bmax, csum,
+ 				STMMAC_RING_MODE, 0, false, skb->len);
+ 		tx_q->tx_skbuff[entry] = NULL;
+-		entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
++		entry = STMMAC_GET_ENTRY(entry, priv->dma_conf.dma_tx_size);
+ 
+ 		if (priv->extend_desc)
+ 			desc = (struct dma_desc *)(tx_q->dma_etx + entry);
+@@ -107,7 +107,7 @@ static void refill_desc3(void *priv_ptr,
+ 	struct stmmac_priv *priv = rx_q->priv_data;
+ 
+ 	/* Fill DES3 in case of RING mode */
+-	if (priv->dma_buf_sz == BUF_SIZE_16KiB)
++	if (priv->dma_conf.dma_buf_sz == BUF_SIZE_16KiB)
+ 		p->des3 = cpu_to_le32(le32_to_cpu(p->des2) + BUF_SIZE_8KiB);
+ }
+ 
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+@@ -185,6 +185,18 @@ struct stmmac_rfs_entry {
+ 	int tc;
+ };
+ 
++struct stmmac_dma_conf {
++	unsigned int dma_buf_sz;
++
++	/* RX Queue */
++	struct stmmac_rx_queue rx_queue[MTL_MAX_RX_QUEUES];
++	unsigned int dma_rx_size;
++
++	/* TX Queue */
++	struct stmmac_tx_queue tx_queue[MTL_MAX_TX_QUEUES];
++	unsigned int dma_tx_size;
++};
++
+ struct stmmac_priv {
+ 	/* Frequently used values are kept adjacent for cache effect */
+ 	u32 tx_coal_frames[MTL_MAX_TX_QUEUES];
+@@ -199,7 +211,6 @@ struct stmmac_priv {
+ 	int sph_cap;
+ 	u32 sarc_type;
+ 
+-	unsigned int dma_buf_sz;
+ 	unsigned int rx_copybreak;
+ 	u32 rx_riwt[MTL_MAX_TX_QUEUES];
+ 	int hwts_rx_en;
+@@ -211,13 +222,7 @@ struct stmmac_priv {
+ 	int (*hwif_quirks)(struct stmmac_priv *priv);
+ 	struct mutex lock;
+ 
+-	/* RX Queue */
+-	struct stmmac_rx_queue rx_queue[MTL_MAX_RX_QUEUES];
+-	unsigned int dma_rx_size;
+-
+-	/* TX Queue */
+-	struct stmmac_tx_queue tx_queue[MTL_MAX_TX_QUEUES];
+-	unsigned int dma_tx_size;
++	struct stmmac_dma_conf dma_conf;
+ 
+ 	/* Generic channel for NAPI */
+ 	struct stmmac_channel channel[STMMAC_CH_MAX];
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+@@ -484,8 +484,8 @@ static void stmmac_get_ringparam(struct
+ 
+ 	ring->rx_max_pending = DMA_MAX_RX_SIZE;
+ 	ring->tx_max_pending = DMA_MAX_TX_SIZE;
+-	ring->rx_pending = priv->dma_rx_size;
+-	ring->tx_pending = priv->dma_tx_size;
++	ring->rx_pending = priv->dma_conf.dma_rx_size;
++	ring->tx_pending = priv->dma_conf.dma_tx_size;
+ }
+ 
+ static int stmmac_set_ringparam(struct net_device *netdev,
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+@@ -74,8 +74,8 @@ static int phyaddr = -1;
+ module_param(phyaddr, int, 0444);
+ MODULE_PARM_DESC(phyaddr, "Physical device address");
+ 
+-#define STMMAC_TX_THRESH(x)	((x)->dma_tx_size / 4)
+-#define STMMAC_RX_THRESH(x)	((x)->dma_rx_size / 4)
++#define STMMAC_TX_THRESH(x)	((x)->dma_conf.dma_tx_size / 4)
++#define STMMAC_RX_THRESH(x)	((x)->dma_conf.dma_rx_size / 4)
+ 
+ /* Limit to make sure XDP TX and slow path can coexist */
+ #define STMMAC_XSK_TX_BUDGET_MAX	256
+@@ -232,7 +232,7 @@ static void stmmac_disable_all_queues(st
+ 
+ 	/* synchronize_rcu() needed for pending XDP buffers to drain */
+ 	for (queue = 0; queue < rx_queues_cnt; queue++) {
+-		rx_q = &priv->rx_queue[queue];
++		rx_q = &priv->dma_conf.rx_queue[queue];
+ 		if (rx_q->xsk_pool) {
+ 			synchronize_rcu();
+ 			break;
+@@ -358,13 +358,13 @@ static void print_pkt(unsigned char *buf
+ 
+ static inline u32 stmmac_tx_avail(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	u32 avail;
+ 
+ 	if (tx_q->dirty_tx > tx_q->cur_tx)
+ 		avail = tx_q->dirty_tx - tx_q->cur_tx - 1;
+ 	else
+-		avail = priv->dma_tx_size - tx_q->cur_tx + tx_q->dirty_tx - 1;
++		avail = priv->dma_conf.dma_tx_size - tx_q->cur_tx + tx_q->dirty_tx - 1;
+ 
+ 	return avail;
+ }
+@@ -376,13 +376,13 @@ static inline u32 stmmac_tx_avail(struct
+  */
+ static inline u32 stmmac_rx_dirty(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	u32 dirty;
+ 
+ 	if (rx_q->dirty_rx <= rx_q->cur_rx)
+ 		dirty = rx_q->cur_rx - rx_q->dirty_rx;
+ 	else
+-		dirty = priv->dma_rx_size - rx_q->dirty_rx + rx_q->cur_rx;
++		dirty = priv->dma_conf.dma_rx_size - rx_q->dirty_rx + rx_q->cur_rx;
+ 
+ 	return dirty;
+ }
+@@ -410,7 +410,7 @@ static int stmmac_enable_eee_mode(struct
+ 
+ 	/* check if all TX queues have the work finished */
+ 	for (queue = 0; queue < tx_cnt; queue++) {
+-		struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++		struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 
+ 		if (tx_q->dirty_tx != tx_q->cur_tx)
+ 			return -EBUSY; /* still unfinished work */
+@@ -1293,7 +1293,7 @@ static void stmmac_display_rx_rings(stru
+ 
+ 	/* Display RX rings */
+ 	for (queue = 0; queue < rx_cnt; queue++) {
+-		struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++		struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 
+ 		pr_info("\tRX Queue %u rings\n", queue);
+ 
+@@ -1306,7 +1306,7 @@ static void stmmac_display_rx_rings(stru
+ 		}
+ 
+ 		/* Display RX ring */
+-		stmmac_display_ring(priv, head_rx, priv->dma_rx_size, true,
++		stmmac_display_ring(priv, head_rx, priv->dma_conf.dma_rx_size, true,
+ 				    rx_q->dma_rx_phy, desc_size);
+ 	}
+ }
+@@ -1320,7 +1320,7 @@ static void stmmac_display_tx_rings(stru
+ 
+ 	/* Display TX rings */
+ 	for (queue = 0; queue < tx_cnt; queue++) {
+-		struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++		struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 
+ 		pr_info("\tTX Queue %d rings\n", queue);
+ 
+@@ -1335,7 +1335,7 @@ static void stmmac_display_tx_rings(stru
+ 			desc_size = sizeof(struct dma_desc);
+ 		}
+ 
+-		stmmac_display_ring(priv, head_tx, priv->dma_tx_size, false,
++		stmmac_display_ring(priv, head_tx, priv->dma_conf.dma_tx_size, false,
+ 				    tx_q->dma_tx_phy, desc_size);
+ 	}
+ }
+@@ -1376,21 +1376,21 @@ static int stmmac_set_bfsize(int mtu, in
+  */
+ static void stmmac_clear_rx_descriptors(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	int i;
+ 
+ 	/* Clear the RX descriptors */
+-	for (i = 0; i < priv->dma_rx_size; i++)
++	for (i = 0; i < priv->dma_conf.dma_rx_size; i++)
+ 		if (priv->extend_desc)
+ 			stmmac_init_rx_desc(priv, &rx_q->dma_erx[i].basic,
+ 					priv->use_riwt, priv->mode,
+-					(i == priv->dma_rx_size - 1),
+-					priv->dma_buf_sz);
++					(i == priv->dma_conf.dma_rx_size - 1),
++					priv->dma_conf.dma_buf_sz);
+ 		else
+ 			stmmac_init_rx_desc(priv, &rx_q->dma_rx[i],
+ 					priv->use_riwt, priv->mode,
+-					(i == priv->dma_rx_size - 1),
+-					priv->dma_buf_sz);
++					(i == priv->dma_conf.dma_rx_size - 1),
++					priv->dma_conf.dma_buf_sz);
+ }
+ 
+ /**
+@@ -1402,12 +1402,12 @@ static void stmmac_clear_rx_descriptors(
+  */
+ static void stmmac_clear_tx_descriptors(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	int i;
+ 
+ 	/* Clear the TX descriptors */
+-	for (i = 0; i < priv->dma_tx_size; i++) {
+-		int last = (i == (priv->dma_tx_size - 1));
++	for (i = 0; i < priv->dma_conf.dma_tx_size; i++) {
++		int last = (i == (priv->dma_conf.dma_tx_size - 1));
+ 		struct dma_desc *p;
+ 
+ 		if (priv->extend_desc)
+@@ -1455,7 +1455,7 @@ static void stmmac_clear_descriptors(str
+ static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p,
+ 				  int i, gfp_t flags, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
+ 
+ 	if (!buf->page) {
+@@ -1480,7 +1480,7 @@ static int stmmac_init_rx_buffers(struct
+ 	buf->addr = page_pool_get_dma_addr(buf->page) + buf->page_offset;
+ 
+ 	stmmac_set_desc_addr(priv, p, buf->addr);
+-	if (priv->dma_buf_sz == BUF_SIZE_16KiB)
++	if (priv->dma_conf.dma_buf_sz == BUF_SIZE_16KiB)
+ 		stmmac_init_desc3(priv, p);
+ 
+ 	return 0;
+@@ -1494,7 +1494,7 @@ static int stmmac_init_rx_buffers(struct
+  */
+ static void stmmac_free_rx_buffer(struct stmmac_priv *priv, u32 queue, int i)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
+ 
+ 	if (buf->page)
+@@ -1514,7 +1514,7 @@ static void stmmac_free_rx_buffer(struct
+  */
+ static void stmmac_free_tx_buffer(struct stmmac_priv *priv, u32 queue, int i)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 
+ 	if (tx_q->tx_skbuff_dma[i].buf &&
+ 	    tx_q->tx_skbuff_dma[i].buf_type != STMMAC_TXBUF_T_XDP_TX) {
+@@ -1559,17 +1559,17 @@ static void dma_free_rx_skbufs(struct st
+ {
+ 	int i;
+ 
+-	for (i = 0; i < priv->dma_rx_size; i++)
++	for (i = 0; i < priv->dma_conf.dma_rx_size; i++)
+ 		stmmac_free_rx_buffer(priv, queue, i);
+ }
+ 
+ static int stmmac_alloc_rx_buffers(struct stmmac_priv *priv, u32 queue,
+ 				   gfp_t flags)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	int i;
+ 
+-	for (i = 0; i < priv->dma_rx_size; i++) {
++	for (i = 0; i < priv->dma_conf.dma_rx_size; i++) {
+ 		struct dma_desc *p;
+ 		int ret;
+ 
+@@ -1596,10 +1596,10 @@ static int stmmac_alloc_rx_buffers(struc
+  */
+ static void dma_free_rx_xskbufs(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	int i;
+ 
+-	for (i = 0; i < priv->dma_rx_size; i++) {
++	for (i = 0; i < priv->dma_conf.dma_rx_size; i++) {
+ 		struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
+ 
+ 		if (!buf->xdp)
+@@ -1612,10 +1612,10 @@ static void dma_free_rx_xskbufs(struct s
+ 
+ static int stmmac_alloc_rx_buffers_zc(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	int i;
+ 
+-	for (i = 0; i < priv->dma_rx_size; i++) {
++	for (i = 0; i < priv->dma_conf.dma_rx_size; i++) {
+ 		struct stmmac_rx_buffer *buf;
+ 		dma_addr_t dma_addr;
+ 		struct dma_desc *p;
+@@ -1658,7 +1658,7 @@ static struct xsk_buff_pool *stmmac_get_
+  */
+ static int __init_dma_rx_desc_rings(struct stmmac_priv *priv, u32 queue, gfp_t flags)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	int ret;
+ 
+ 	netif_dbg(priv, probe, priv->dev,
+@@ -1704,11 +1704,11 @@ static int __init_dma_rx_desc_rings(stru
+ 		if (priv->extend_desc)
+ 			stmmac_mode_init(priv, rx_q->dma_erx,
+ 					 rx_q->dma_rx_phy,
+-					 priv->dma_rx_size, 1);
++					 priv->dma_conf.dma_rx_size, 1);
+ 		else
+ 			stmmac_mode_init(priv, rx_q->dma_rx,
+ 					 rx_q->dma_rx_phy,
+-					 priv->dma_rx_size, 0);
++					 priv->dma_conf.dma_rx_size, 0);
+ 	}
+ 
+ 	return 0;
+@@ -1735,7 +1735,7 @@ static int init_dma_rx_desc_rings(struct
+ 
+ err_init_rx_buffers:
+ 	while (queue >= 0) {
+-		struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++		struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 
+ 		if (rx_q->xsk_pool)
+ 			dma_free_rx_xskbufs(priv, queue);
+@@ -1764,7 +1764,7 @@ err_init_rx_buffers:
+  */
+ static int __init_dma_tx_desc_rings(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	int i;
+ 
+ 	netif_dbg(priv, probe, priv->dev,
+@@ -1776,16 +1776,16 @@ static int __init_dma_tx_desc_rings(stru
+ 		if (priv->extend_desc)
+ 			stmmac_mode_init(priv, tx_q->dma_etx,
+ 					 tx_q->dma_tx_phy,
+-					 priv->dma_tx_size, 1);
++					 priv->dma_conf.dma_tx_size, 1);
+ 		else if (!(tx_q->tbs & STMMAC_TBS_AVAIL))
+ 			stmmac_mode_init(priv, tx_q->dma_tx,
+ 					 tx_q->dma_tx_phy,
+-					 priv->dma_tx_size, 0);
++					 priv->dma_conf.dma_tx_size, 0);
+ 	}
+ 
+ 	tx_q->xsk_pool = stmmac_get_xsk_pool(priv, queue);
+ 
+-	for (i = 0; i < priv->dma_tx_size; i++) {
++	for (i = 0; i < priv->dma_conf.dma_tx_size; i++) {
+ 		struct dma_desc *p;
+ 
+ 		if (priv->extend_desc)
+@@ -1855,12 +1855,12 @@ static int init_dma_desc_rings(struct ne
+  */
+ static void dma_free_tx_skbufs(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	int i;
+ 
+ 	tx_q->xsk_frames_done = 0;
+ 
+-	for (i = 0; i < priv->dma_tx_size; i++)
++	for (i = 0; i < priv->dma_conf.dma_tx_size; i++)
+ 		stmmac_free_tx_buffer(priv, queue, i);
+ 
+ 	if (tx_q->xsk_pool && tx_q->xsk_frames_done) {
+@@ -1890,7 +1890,7 @@ static void stmmac_free_tx_skbufs(struct
+  */
+ static void __free_dma_rx_desc_resources(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 
+ 	/* Release the DMA RX socket buffers */
+ 	if (rx_q->xsk_pool)
+@@ -1903,11 +1903,11 @@ static void __free_dma_rx_desc_resources
+ 
+ 	/* Free DMA regions of consistent memory previously allocated */
+ 	if (!priv->extend_desc)
+-		dma_free_coherent(priv->device, priv->dma_rx_size *
++		dma_free_coherent(priv->device, priv->dma_conf.dma_rx_size *
+ 				  sizeof(struct dma_desc),
+ 				  rx_q->dma_rx, rx_q->dma_rx_phy);
+ 	else
+-		dma_free_coherent(priv->device, priv->dma_rx_size *
++		dma_free_coherent(priv->device, priv->dma_conf.dma_rx_size *
+ 				  sizeof(struct dma_extended_desc),
+ 				  rx_q->dma_erx, rx_q->dma_rx_phy);
+ 
+@@ -1936,7 +1936,7 @@ static void free_dma_rx_desc_resources(s
+  */
+ static void __free_dma_tx_desc_resources(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	size_t size;
+ 	void *addr;
+ 
+@@ -1954,7 +1954,7 @@ static void __free_dma_tx_desc_resources
+ 		addr = tx_q->dma_tx;
+ 	}
+ 
+-	size *= priv->dma_tx_size;
++	size *= priv->dma_conf.dma_tx_size;
+ 
+ 	dma_free_coherent(priv->device, size, addr, tx_q->dma_tx_phy);
+ 
+@@ -1983,7 +1983,7 @@ static void free_dma_tx_desc_resources(s
+  */
+ static int __alloc_dma_rx_desc_resources(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	struct stmmac_channel *ch = &priv->channel[queue];
+ 	bool xdp_prog = stmmac_xdp_is_enabled(priv);
+ 	struct page_pool_params pp_params = { 0 };
+@@ -1995,8 +1995,8 @@ static int __alloc_dma_rx_desc_resources
+ 	rx_q->priv_data = priv;
+ 
+ 	pp_params.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV;
+-	pp_params.pool_size = priv->dma_rx_size;
+-	num_pages = DIV_ROUND_UP(priv->dma_buf_sz, PAGE_SIZE);
++	pp_params.pool_size = priv->dma_conf.dma_rx_size;
++	num_pages = DIV_ROUND_UP(priv->dma_conf.dma_buf_sz, PAGE_SIZE);
+ 	pp_params.order = ilog2(num_pages);
+ 	pp_params.nid = dev_to_node(priv->device);
+ 	pp_params.dev = priv->device;
+@@ -2011,7 +2011,7 @@ static int __alloc_dma_rx_desc_resources
+ 		return ret;
+ 	}
+ 
+-	rx_q->buf_pool = kcalloc(priv->dma_rx_size,
++	rx_q->buf_pool = kcalloc(priv->dma_conf.dma_rx_size,
+ 				 sizeof(*rx_q->buf_pool),
+ 				 GFP_KERNEL);
+ 	if (!rx_q->buf_pool)
+@@ -2019,7 +2019,7 @@ static int __alloc_dma_rx_desc_resources
+ 
+ 	if (priv->extend_desc) {
+ 		rx_q->dma_erx = dma_alloc_coherent(priv->device,
+-						   priv->dma_rx_size *
++						   priv->dma_conf.dma_rx_size *
+ 						   sizeof(struct dma_extended_desc),
+ 						   &rx_q->dma_rx_phy,
+ 						   GFP_KERNEL);
+@@ -2028,7 +2028,7 @@ static int __alloc_dma_rx_desc_resources
+ 
+ 	} else {
+ 		rx_q->dma_rx = dma_alloc_coherent(priv->device,
+-						  priv->dma_rx_size *
++						  priv->dma_conf.dma_rx_size *
+ 						  sizeof(struct dma_desc),
+ 						  &rx_q->dma_rx_phy,
+ 						  GFP_KERNEL);
+@@ -2085,20 +2085,20 @@ err_dma:
+  */
+ static int __alloc_dma_tx_desc_resources(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	size_t size;
+ 	void *addr;
+ 
+ 	tx_q->queue_index = queue;
+ 	tx_q->priv_data = priv;
+ 
+-	tx_q->tx_skbuff_dma = kcalloc(priv->dma_tx_size,
++	tx_q->tx_skbuff_dma = kcalloc(priv->dma_conf.dma_tx_size,
+ 				      sizeof(*tx_q->tx_skbuff_dma),
+ 				      GFP_KERNEL);
+ 	if (!tx_q->tx_skbuff_dma)
+ 		return -ENOMEM;
+ 
+-	tx_q->tx_skbuff = kcalloc(priv->dma_tx_size,
++	tx_q->tx_skbuff = kcalloc(priv->dma_conf.dma_tx_size,
+ 				  sizeof(struct sk_buff *),
+ 				  GFP_KERNEL);
+ 	if (!tx_q->tx_skbuff)
+@@ -2111,7 +2111,7 @@ static int __alloc_dma_tx_desc_resources
+ 	else
+ 		size = sizeof(struct dma_desc);
+ 
+-	size *= priv->dma_tx_size;
++	size *= priv->dma_conf.dma_tx_size;
+ 
+ 	addr = dma_alloc_coherent(priv->device, size,
+ 				  &tx_q->dma_tx_phy, GFP_KERNEL);
+@@ -2355,7 +2355,7 @@ static void stmmac_dma_operation_mode(st
+ 
+ 	/* configure all channels */
+ 	for (chan = 0; chan < rx_channels_count; chan++) {
+-		struct stmmac_rx_queue *rx_q = &priv->rx_queue[chan];
++		struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[chan];
+ 		u32 buf_size;
+ 
+ 		qmode = priv->plat->rx_queues_cfg[chan].mode_to_use;
+@@ -2370,7 +2370,7 @@ static void stmmac_dma_operation_mode(st
+ 					      chan);
+ 		} else {
+ 			stmmac_set_dma_bfsize(priv, priv->ioaddr,
+-					      priv->dma_buf_sz,
++					      priv->dma_conf.dma_buf_sz,
+ 					      chan);
+ 		}
+ 	}
+@@ -2386,7 +2386,7 @@ static void stmmac_dma_operation_mode(st
+ static bool stmmac_xdp_xmit_zc(struct stmmac_priv *priv, u32 queue, u32 budget)
+ {
+ 	struct netdev_queue *nq = netdev_get_tx_queue(priv->dev, queue);
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	struct xsk_buff_pool *pool = tx_q->xsk_pool;
+ 	unsigned int entry = tx_q->cur_tx;
+ 	struct dma_desc *tx_desc = NULL;
+@@ -2461,7 +2461,7 @@ static bool stmmac_xdp_xmit_zc(struct st
+ 
+ 		stmmac_enable_dma_transmission(priv, priv->ioaddr);
+ 
+-		tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_tx_size);
++		tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_conf.dma_tx_size);
+ 		entry = tx_q->cur_tx;
+ 	}
+ 
+@@ -2487,7 +2487,7 @@ static bool stmmac_xdp_xmit_zc(struct st
+  */
+ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	unsigned int bytes_compl = 0, pkts_compl = 0;
+ 	unsigned int entry, xmits = 0, count = 0;
+ 
+@@ -2500,7 +2500,7 @@ static int stmmac_tx_clean(struct stmmac
+ 	entry = tx_q->dirty_tx;
+ 
+ 	/* Try to clean all TX complete frame in 1 shot */
+-	while ((entry != tx_q->cur_tx) && count < priv->dma_tx_size) {
++	while ((entry != tx_q->cur_tx) && count < priv->dma_conf.dma_tx_size) {
+ 		struct xdp_frame *xdpf;
+ 		struct sk_buff *skb;
+ 		struct dma_desc *p;
+@@ -2600,7 +2600,7 @@ static int stmmac_tx_clean(struct stmmac
+ 
+ 		stmmac_release_tx_desc(priv, p, priv->mode);
+ 
+-		entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
++		entry = STMMAC_GET_ENTRY(entry, priv->dma_conf.dma_tx_size);
+ 	}
+ 	tx_q->dirty_tx = entry;
+ 
+@@ -2665,7 +2665,7 @@ static int stmmac_tx_clean(struct stmmac
+  */
+ static void stmmac_tx_err(struct stmmac_priv *priv, u32 chan)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
+ 
+ 	netif_tx_stop_queue(netdev_get_tx_queue(priv->dev, chan));
+ 
+@@ -2732,8 +2732,8 @@ static int stmmac_napi_check(struct stmm
+ {
+ 	int status = stmmac_dma_interrupt_status(priv, priv->ioaddr,
+ 						 &priv->xstats, chan, dir);
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[chan];
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[chan];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
+ 	struct stmmac_channel *ch = &priv->channel[chan];
+ 	struct napi_struct *rx_napi;
+ 	struct napi_struct *tx_napi;
+@@ -2909,7 +2909,7 @@ static int stmmac_init_dma_engine(struct
+ 
+ 	/* DMA RX Channel Configuration */
+ 	for (chan = 0; chan < rx_channels_count; chan++) {
+-		rx_q = &priv->rx_queue[chan];
++		rx_q = &priv->dma_conf.rx_queue[chan];
+ 
+ 		stmmac_init_rx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+ 				    rx_q->dma_rx_phy, chan);
+@@ -2923,7 +2923,7 @@ static int stmmac_init_dma_engine(struct
+ 
+ 	/* DMA TX Channel Configuration */
+ 	for (chan = 0; chan < tx_channels_count; chan++) {
+-		tx_q = &priv->tx_queue[chan];
++		tx_q = &priv->dma_conf.tx_queue[chan];
+ 
+ 		stmmac_init_tx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+ 				    tx_q->dma_tx_phy, chan);
+@@ -2938,7 +2938,7 @@ static int stmmac_init_dma_engine(struct
+ 
+ static void stmmac_tx_timer_arm(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 
+ 	hrtimer_start(&tx_q->txtimer,
+ 		      STMMAC_COAL_TIMER(priv->tx_coal_timer[queue]),
+@@ -2988,7 +2988,7 @@ static void stmmac_init_coalesce(struct
+ 	u32 chan;
+ 
+ 	for (chan = 0; chan < tx_channel_count; chan++) {
+-		struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
++		struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
+ 
+ 		priv->tx_coal_frames[chan] = STMMAC_TX_FRAMES;
+ 		priv->tx_coal_timer[chan] = STMMAC_COAL_TX_TIMER;
+@@ -3010,12 +3010,12 @@ static void stmmac_set_rings_length(stru
+ 	/* set TX ring length */
+ 	for (chan = 0; chan < tx_channels_count; chan++)
+ 		stmmac_set_tx_ring_len(priv, priv->ioaddr,
+-				       (priv->dma_tx_size - 1), chan);
++				       (priv->dma_conf.dma_tx_size - 1), chan);
+ 
+ 	/* set RX ring length */
+ 	for (chan = 0; chan < rx_channels_count; chan++)
+ 		stmmac_set_rx_ring_len(priv, priv->ioaddr,
+-				       (priv->dma_rx_size - 1), chan);
++				       (priv->dma_conf.dma_rx_size - 1), chan);
+ }
+ 
+ /**
+@@ -3350,7 +3350,7 @@ static int stmmac_hw_setup(struct net_de
+ 	/* Enable TSO */
+ 	if (priv->tso) {
+ 		for (chan = 0; chan < tx_cnt; chan++) {
+-			struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
++			struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
+ 
+ 			/* TSO and TBS cannot co-exist */
+ 			if (tx_q->tbs & STMMAC_TBS_AVAIL)
+@@ -3372,7 +3372,7 @@ static int stmmac_hw_setup(struct net_de
+ 
+ 	/* TBS */
+ 	for (chan = 0; chan < tx_cnt; chan++) {
+-		struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
++		struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
+ 		int enable = tx_q->tbs & STMMAC_TBS_AVAIL;
+ 
+ 		stmmac_enable_tbs(priv, priv->ioaddr, enable, chan);
+@@ -3416,7 +3416,7 @@ static void stmmac_free_irq(struct net_d
+ 		for (j = irq_idx - 1; j >= 0; j--) {
+ 			if (priv->tx_irq[j] > 0) {
+ 				irq_set_affinity_hint(priv->tx_irq[j], NULL);
+-				free_irq(priv->tx_irq[j], &priv->tx_queue[j]);
++				free_irq(priv->tx_irq[j], &priv->dma_conf.tx_queue[j]);
+ 			}
+ 		}
+ 		irq_idx = priv->plat->rx_queues_to_use;
+@@ -3425,7 +3425,7 @@ static void stmmac_free_irq(struct net_d
+ 		for (j = irq_idx - 1; j >= 0; j--) {
+ 			if (priv->rx_irq[j] > 0) {
+ 				irq_set_affinity_hint(priv->rx_irq[j], NULL);
+-				free_irq(priv->rx_irq[j], &priv->rx_queue[j]);
++				free_irq(priv->rx_irq[j], &priv->dma_conf.rx_queue[j]);
+ 			}
+ 		}
+ 
+@@ -3558,7 +3558,7 @@ static int stmmac_request_irq_multi_msi(
+ 		sprintf(int_name, "%s:%s-%d", dev->name, "rx", i);
+ 		ret = request_irq(priv->rx_irq[i],
+ 				  stmmac_msi_intr_rx,
+-				  0, int_name, &priv->rx_queue[i]);
++				  0, int_name, &priv->dma_conf.rx_queue[i]);
+ 		if (unlikely(ret < 0)) {
+ 			netdev_err(priv->dev,
+ 				   "%s: alloc rx-%d  MSI %d (error: %d)\n",
+@@ -3581,7 +3581,7 @@ static int stmmac_request_irq_multi_msi(
+ 		sprintf(int_name, "%s:%s-%d", dev->name, "tx", i);
+ 		ret = request_irq(priv->tx_irq[i],
+ 				  stmmac_msi_intr_tx,
+-				  0, int_name, &priv->tx_queue[i]);
++				  0, int_name, &priv->dma_conf.tx_queue[i]);
+ 		if (unlikely(ret < 0)) {
+ 			netdev_err(priv->dev,
+ 				   "%s: alloc tx-%d  MSI %d (error: %d)\n",
+@@ -3712,21 +3712,21 @@ static int stmmac_open(struct net_device
+ 		bfsize = 0;
+ 
+ 	if (bfsize < BUF_SIZE_16KiB)
+-		bfsize = stmmac_set_bfsize(dev->mtu, priv->dma_buf_sz);
++		bfsize = stmmac_set_bfsize(dev->mtu, priv->dma_conf.dma_buf_sz);
+ 
+-	priv->dma_buf_sz = bfsize;
++	priv->dma_conf.dma_buf_sz = bfsize;
+ 	buf_sz = bfsize;
+ 
+ 	priv->rx_copybreak = STMMAC_RX_COPYBREAK;
+ 
+-	if (!priv->dma_tx_size)
+-		priv->dma_tx_size = DMA_DEFAULT_TX_SIZE;
+-	if (!priv->dma_rx_size)
+-		priv->dma_rx_size = DMA_DEFAULT_RX_SIZE;
++	if (!priv->dma_conf.dma_tx_size)
++		priv->dma_conf.dma_tx_size = DMA_DEFAULT_TX_SIZE;
++	if (!priv->dma_conf.dma_rx_size)
++		priv->dma_conf.dma_rx_size = DMA_DEFAULT_RX_SIZE;
+ 
+ 	/* Earlier check for TBS */
+ 	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++) {
+-		struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan];
++		struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
+ 		int tbs_en = priv->plat->tx_queues_cfg[chan].tbs_en;
+ 
+ 		/* Setup per-TXQ tbs flag before TX descriptor alloc */
+@@ -3775,7 +3775,7 @@ irq_error:
+ 	phylink_stop(priv->phylink);
+ 
+ 	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++)
+-		hrtimer_cancel(&priv->tx_queue[chan].txtimer);
++		hrtimer_cancel(&priv->dma_conf.tx_queue[chan].txtimer);
+ 
+ 	stmmac_hw_teardown(dev);
+ init_error:
+@@ -3817,7 +3817,7 @@ static int stmmac_release(struct net_dev
+ 	stmmac_disable_all_queues(priv);
+ 
+ 	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++)
+-		hrtimer_cancel(&priv->tx_queue[chan].txtimer);
++		hrtimer_cancel(&priv->dma_conf.tx_queue[chan].txtimer);
+ 
+ 	netif_tx_disable(dev);
+ 
+@@ -3877,7 +3877,7 @@ static bool stmmac_vlan_insert(struct st
+ 		return false;
+ 
+ 	stmmac_set_tx_owner(priv, p);
+-	tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_tx_size);
++	tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_conf.dma_tx_size);
+ 	return true;
+ }
+ 
+@@ -3895,7 +3895,7 @@ static bool stmmac_vlan_insert(struct st
+ static void stmmac_tso_allocator(struct stmmac_priv *priv, dma_addr_t des,
+ 				 int total_len, bool last_segment, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	struct dma_desc *desc;
+ 	u32 buff_size;
+ 	int tmp_len;
+@@ -3906,7 +3906,7 @@ static void stmmac_tso_allocator(struct
+ 		dma_addr_t curr_addr;
+ 
+ 		tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx,
+-						priv->dma_tx_size);
++						priv->dma_conf.dma_tx_size);
+ 		WARN_ON(tx_q->tx_skbuff[tx_q->cur_tx]);
+ 
+ 		if (tx_q->tbs & STMMAC_TBS_AVAIL)
+@@ -3934,7 +3934,7 @@ static void stmmac_tso_allocator(struct
+ 
+ static void stmmac_flush_tx_descriptors(struct stmmac_priv *priv, int queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	int desc_size;
+ 
+ 	if (likely(priv->extend_desc))
+@@ -3996,7 +3996,7 @@ static netdev_tx_t stmmac_tso_xmit(struc
+ 	dma_addr_t des;
+ 	int i;
+ 
+-	tx_q = &priv->tx_queue[queue];
++	tx_q = &priv->dma_conf.tx_queue[queue];
+ 	first_tx = tx_q->cur_tx;
+ 
+ 	/* Compute header lengths */
+@@ -4036,7 +4036,7 @@ static netdev_tx_t stmmac_tso_xmit(struc
+ 		stmmac_set_mss(priv, mss_desc, mss);
+ 		tx_q->mss = mss;
+ 		tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx,
+-						priv->dma_tx_size);
++						priv->dma_conf.dma_tx_size);
+ 		WARN_ON(tx_q->tx_skbuff[tx_q->cur_tx]);
+ 	}
+ 
+@@ -4148,7 +4148,7 @@ static netdev_tx_t stmmac_tso_xmit(struc
+ 	 * ndo_start_xmit will fill this descriptor the next time it's
+ 	 * called and stmmac_tx_clean may clean up to this descriptor.
+ 	 */
+-	tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_tx_size);
++	tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_conf.dma_tx_size);
+ 
+ 	if (unlikely(stmmac_tx_avail(priv, queue) <= (MAX_SKB_FRAGS + 1))) {
+ 		netif_dbg(priv, hw, priv->dev, "%s: stop transmitted packets\n",
+@@ -4236,7 +4236,7 @@ static netdev_tx_t stmmac_xmit(struct sk
+ 	int entry, first_tx;
+ 	dma_addr_t des;
+ 
+-	tx_q = &priv->tx_queue[queue];
++	tx_q = &priv->dma_conf.tx_queue[queue];
+ 	first_tx = tx_q->cur_tx;
+ 
+ 	if (priv->tx_path_in_lpi_mode && priv->eee_sw_timer_en)
+@@ -4299,7 +4299,7 @@ static netdev_tx_t stmmac_xmit(struct sk
+ 		int len = skb_frag_size(frag);
+ 		bool last_segment = (i == (nfrags - 1));
+ 
+-		entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
++		entry = STMMAC_GET_ENTRY(entry, priv->dma_conf.dma_tx_size);
+ 		WARN_ON(tx_q->tx_skbuff[entry]);
+ 
+ 		if (likely(priv->extend_desc))
+@@ -4370,7 +4370,7 @@ static netdev_tx_t stmmac_xmit(struct sk
+ 	 * ndo_start_xmit will fill this descriptor the next time it's
+ 	 * called and stmmac_tx_clean may clean up to this descriptor.
+ 	 */
+-	entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
++	entry = STMMAC_GET_ENTRY(entry, priv->dma_conf.dma_tx_size);
+ 	tx_q->cur_tx = entry;
+ 
+ 	if (netif_msg_pktdata(priv)) {
+@@ -4485,7 +4485,7 @@ static void stmmac_rx_vlan(struct net_de
+  */
+ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	int dirty = stmmac_rx_dirty(priv, queue);
+ 	unsigned int entry = rx_q->dirty_rx;
+ 
+@@ -4535,7 +4535,7 @@ static inline void stmmac_rx_refill(stru
+ 		dma_wmb();
+ 		stmmac_set_rx_owner(priv, p, use_rx_wd);
+ 
+-		entry = STMMAC_GET_ENTRY(entry, priv->dma_rx_size);
++		entry = STMMAC_GET_ENTRY(entry, priv->dma_conf.dma_rx_size);
+ 	}
+ 	rx_q->dirty_rx = entry;
+ 	rx_q->rx_tail_addr = rx_q->dma_rx_phy +
+@@ -4563,12 +4563,12 @@ static unsigned int stmmac_rx_buf1_len(s
+ 
+ 	/* First descriptor, not last descriptor and not split header */
+ 	if (status & rx_not_ls)
+-		return priv->dma_buf_sz;
++		return priv->dma_conf.dma_buf_sz;
+ 
+ 	plen = stmmac_get_rx_frame_len(priv, p, coe);
+ 
+ 	/* First descriptor and last descriptor and not split header */
+-	return min_t(unsigned int, priv->dma_buf_sz, plen);
++	return min_t(unsigned int, priv->dma_conf.dma_buf_sz, plen);
+ }
+ 
+ static unsigned int stmmac_rx_buf2_len(struct stmmac_priv *priv,
+@@ -4584,7 +4584,7 @@ static unsigned int stmmac_rx_buf2_len(s
+ 
+ 	/* Not last descriptor */
+ 	if (status & rx_not_ls)
+-		return priv->dma_buf_sz;
++		return priv->dma_conf.dma_buf_sz;
+ 
+ 	plen = stmmac_get_rx_frame_len(priv, p, coe);
+ 
+@@ -4595,7 +4595,7 @@ static unsigned int stmmac_rx_buf2_len(s
+ static int stmmac_xdp_xmit_xdpf(struct stmmac_priv *priv, int queue,
+ 				struct xdp_frame *xdpf, bool dma_map)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	unsigned int entry = tx_q->cur_tx;
+ 	struct dma_desc *tx_desc;
+ 	dma_addr_t dma_addr;
+@@ -4658,7 +4658,7 @@ static int stmmac_xdp_xmit_xdpf(struct s
+ 
+ 	stmmac_enable_dma_transmission(priv, priv->ioaddr);
+ 
+-	entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size);
++	entry = STMMAC_GET_ENTRY(entry, priv->dma_conf.dma_tx_size);
+ 	tx_q->cur_tx = entry;
+ 
+ 	return STMMAC_XDP_TX;
+@@ -4832,7 +4832,7 @@ static void stmmac_dispatch_skb_zc(struc
+ 
+ static bool stmmac_rx_refill_zc(struct stmmac_priv *priv, u32 queue, u32 budget)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	unsigned int entry = rx_q->dirty_rx;
+ 	struct dma_desc *rx_desc = NULL;
+ 	bool ret = true;
+@@ -4875,7 +4875,7 @@ static bool stmmac_rx_refill_zc(struct s
+ 		dma_wmb();
+ 		stmmac_set_rx_owner(priv, rx_desc, use_rx_wd);
+ 
+-		entry = STMMAC_GET_ENTRY(entry, priv->dma_rx_size);
++		entry = STMMAC_GET_ENTRY(entry, priv->dma_conf.dma_rx_size);
+ 	}
+ 
+ 	if (rx_desc) {
+@@ -4890,7 +4890,7 @@ static bool stmmac_rx_refill_zc(struct s
+ 
+ static int stmmac_rx_zc(struct stmmac_priv *priv, int limit, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	unsigned int count = 0, error = 0, len = 0;
+ 	int dirty = stmmac_rx_dirty(priv, queue);
+ 	unsigned int next_entry = rx_q->cur_rx;
+@@ -4912,7 +4912,7 @@ static int stmmac_rx_zc(struct stmmac_pr
+ 			desc_size = sizeof(struct dma_desc);
+ 		}
+ 
+-		stmmac_display_ring(priv, rx_head, priv->dma_rx_size, true,
++		stmmac_display_ring(priv, rx_head, priv->dma_conf.dma_rx_size, true,
+ 				    rx_q->dma_rx_phy, desc_size);
+ 	}
+ 	while (count < limit) {
+@@ -4959,7 +4959,7 @@ read_again:
+ 
+ 		/* Prefetch the next RX descriptor */
+ 		rx_q->cur_rx = STMMAC_GET_ENTRY(rx_q->cur_rx,
+-						priv->dma_rx_size);
++						priv->dma_conf.dma_rx_size);
+ 		next_entry = rx_q->cur_rx;
+ 
+ 		if (priv->extend_desc)
+@@ -5080,7 +5080,7 @@ read_again:
+  */
+ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	struct stmmac_channel *ch = &priv->channel[queue];
+ 	unsigned int count = 0, error = 0, len = 0;
+ 	int status = 0, coe = priv->hw->rx_csum;
+@@ -5093,7 +5093,7 @@ static int stmmac_rx(struct stmmac_priv
+ 	int buf_sz;
+ 
+ 	dma_dir = page_pool_get_dma_dir(rx_q->page_pool);
+-	buf_sz = DIV_ROUND_UP(priv->dma_buf_sz, PAGE_SIZE) * PAGE_SIZE;
++	buf_sz = DIV_ROUND_UP(priv->dma_conf.dma_buf_sz, PAGE_SIZE) * PAGE_SIZE;
+ 
+ 	if (netif_msg_rx_status(priv)) {
+ 		void *rx_head;
+@@ -5107,7 +5107,7 @@ static int stmmac_rx(struct stmmac_priv
+ 			desc_size = sizeof(struct dma_desc);
+ 		}
+ 
+-		stmmac_display_ring(priv, rx_head, priv->dma_rx_size, true,
++		stmmac_display_ring(priv, rx_head, priv->dma_conf.dma_rx_size, true,
+ 				    rx_q->dma_rx_phy, desc_size);
+ 	}
+ 	while (count < limit) {
+@@ -5151,7 +5151,7 @@ read_again:
+ 			break;
+ 
+ 		rx_q->cur_rx = STMMAC_GET_ENTRY(rx_q->cur_rx,
+-						priv->dma_rx_size);
++						priv->dma_conf.dma_rx_size);
+ 		next_entry = rx_q->cur_rx;
+ 
+ 		if (priv->extend_desc)
+@@ -5285,7 +5285,7 @@ read_again:
+ 						buf1_len, dma_dir);
+ 			skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
+ 					buf->page, buf->page_offset, buf1_len,
+-					priv->dma_buf_sz);
++					priv->dma_conf.dma_buf_sz);
+ 
+ 			/* Data payload appended into SKB */
+ 			page_pool_release_page(rx_q->page_pool, buf->page);
+@@ -5297,7 +5297,7 @@ read_again:
+ 						buf2_len, dma_dir);
+ 			skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
+ 					buf->sec_page, 0, buf2_len,
+-					priv->dma_buf_sz);
++					priv->dma_conf.dma_buf_sz);
+ 
+ 			/* Data payload appended into SKB */
+ 			page_pool_release_page(rx_q->page_pool, buf->sec_page);
+@@ -5739,11 +5739,13 @@ static irqreturn_t stmmac_safety_interru
+ static irqreturn_t stmmac_msi_intr_tx(int irq, void *data)
+ {
+ 	struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)data;
++	struct stmmac_dma_conf *dma_conf;
+ 	int chan = tx_q->queue_index;
+ 	struct stmmac_priv *priv;
+ 	int status;
+ 
+-	priv = container_of(tx_q, struct stmmac_priv, tx_queue[chan]);
++	dma_conf = container_of(tx_q, struct stmmac_dma_conf, tx_queue[chan]);
++	priv = container_of(dma_conf, struct stmmac_priv, dma_conf);
+ 
+ 	if (unlikely(!data)) {
+ 		netdev_err(priv->dev, "%s: invalid dev pointer\n", __func__);
+@@ -5783,10 +5785,12 @@ static irqreturn_t stmmac_msi_intr_tx(in
+ static irqreturn_t stmmac_msi_intr_rx(int irq, void *data)
+ {
+ 	struct stmmac_rx_queue *rx_q = (struct stmmac_rx_queue *)data;
++	struct stmmac_dma_conf *dma_conf;
+ 	int chan = rx_q->queue_index;
+ 	struct stmmac_priv *priv;
+ 
+-	priv = container_of(rx_q, struct stmmac_priv, rx_queue[chan]);
++	dma_conf = container_of(rx_q, struct stmmac_dma_conf, rx_queue[chan]);
++	priv = container_of(dma_conf, struct stmmac_priv, dma_conf);
+ 
+ 	if (unlikely(!data)) {
+ 		netdev_err(priv->dev, "%s: invalid dev pointer\n", __func__);
+@@ -5817,10 +5821,10 @@ static void stmmac_poll_controller(struc
+ 
+ 	if (priv->plat->multi_msi_en) {
+ 		for (i = 0; i < priv->plat->rx_queues_to_use; i++)
+-			stmmac_msi_intr_rx(0, &priv->rx_queue[i]);
++			stmmac_msi_intr_rx(0, &priv->dma_conf.rx_queue[i]);
+ 
+ 		for (i = 0; i < priv->plat->tx_queues_to_use; i++)
+-			stmmac_msi_intr_tx(0, &priv->tx_queue[i]);
++			stmmac_msi_intr_tx(0, &priv->dma_conf.tx_queue[i]);
+ 	} else {
+ 		disable_irq(dev->irq);
+ 		stmmac_interrupt(dev->irq, dev);
+@@ -6001,34 +6005,34 @@ static int stmmac_rings_status_show(stru
+ 		return 0;
+ 
+ 	for (queue = 0; queue < rx_count; queue++) {
+-		struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++		struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 
+ 		seq_printf(seq, "RX Queue %d:\n", queue);
+ 
+ 		if (priv->extend_desc) {
+ 			seq_printf(seq, "Extended descriptor ring:\n");
+ 			sysfs_display_ring((void *)rx_q->dma_erx,
+-					   priv->dma_rx_size, 1, seq, rx_q->dma_rx_phy);
++					   priv->dma_conf.dma_rx_size, 1, seq, rx_q->dma_rx_phy);
+ 		} else {
+ 			seq_printf(seq, "Descriptor ring:\n");
+ 			sysfs_display_ring((void *)rx_q->dma_rx,
+-					   priv->dma_rx_size, 0, seq, rx_q->dma_rx_phy);
++					   priv->dma_conf.dma_rx_size, 0, seq, rx_q->dma_rx_phy);
+ 		}
+ 	}
+ 
+ 	for (queue = 0; queue < tx_count; queue++) {
+-		struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++		struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 
+ 		seq_printf(seq, "TX Queue %d:\n", queue);
+ 
+ 		if (priv->extend_desc) {
+ 			seq_printf(seq, "Extended descriptor ring:\n");
+ 			sysfs_display_ring((void *)tx_q->dma_etx,
+-					   priv->dma_tx_size, 1, seq, tx_q->dma_tx_phy);
++					   priv->dma_conf.dma_tx_size, 1, seq, tx_q->dma_tx_phy);
+ 		} else if (!(tx_q->tbs & STMMAC_TBS_AVAIL)) {
+ 			seq_printf(seq, "Descriptor ring:\n");
+ 			sysfs_display_ring((void *)tx_q->dma_tx,
+-					   priv->dma_tx_size, 0, seq, tx_q->dma_tx_phy);
++					   priv->dma_conf.dma_tx_size, 0, seq, tx_q->dma_tx_phy);
+ 		}
+ 	}
+ 
+@@ -6369,7 +6373,7 @@ void stmmac_disable_rx_queue(struct stmm
+ 
+ void stmmac_enable_rx_queue(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	struct stmmac_channel *ch = &priv->channel[queue];
+ 	unsigned long flags;
+ 	u32 buf_size;
+@@ -6406,7 +6410,7 @@ void stmmac_enable_rx_queue(struct stmma
+ 				      rx_q->queue_index);
+ 	} else {
+ 		stmmac_set_dma_bfsize(priv, priv->ioaddr,
+-				      priv->dma_buf_sz,
++				      priv->dma_conf.dma_buf_sz,
+ 				      rx_q->queue_index);
+ 	}
+ 
+@@ -6432,7 +6436,7 @@ void stmmac_disable_tx_queue(struct stmm
+ 
+ void stmmac_enable_tx_queue(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 	struct stmmac_channel *ch = &priv->channel[queue];
+ 	unsigned long flags;
+ 	int ret;
+@@ -6479,7 +6483,7 @@ void stmmac_xdp_release(struct net_devic
+ 	stmmac_disable_all_queues(priv);
+ 
+ 	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++)
+-		hrtimer_cancel(&priv->tx_queue[chan].txtimer);
++		hrtimer_cancel(&priv->dma_conf.tx_queue[chan].txtimer);
+ 
+ 	/* Free the IRQ lines */
+ 	stmmac_free_irq(dev, REQ_IRQ_ERR_ALL, 0);
+@@ -6538,7 +6542,7 @@ int stmmac_xdp_open(struct net_device *d
+ 
+ 	/* DMA RX Channel Configuration */
+ 	for (chan = 0; chan < rx_cnt; chan++) {
+-		rx_q = &priv->rx_queue[chan];
++		rx_q = &priv->dma_conf.rx_queue[chan];
+ 
+ 		stmmac_init_rx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+ 				    rx_q->dma_rx_phy, chan);
+@@ -6556,7 +6560,7 @@ int stmmac_xdp_open(struct net_device *d
+ 					      rx_q->queue_index);
+ 		} else {
+ 			stmmac_set_dma_bfsize(priv, priv->ioaddr,
+-					      priv->dma_buf_sz,
++					      priv->dma_conf.dma_buf_sz,
+ 					      rx_q->queue_index);
+ 		}
+ 
+@@ -6565,7 +6569,7 @@ int stmmac_xdp_open(struct net_device *d
+ 
+ 	/* DMA TX Channel Configuration */
+ 	for (chan = 0; chan < tx_cnt; chan++) {
+-		tx_q = &priv->tx_queue[chan];
++		tx_q = &priv->dma_conf.tx_queue[chan];
+ 
+ 		stmmac_init_tx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+ 				    tx_q->dma_tx_phy, chan);
+@@ -6598,7 +6602,7 @@ int stmmac_xdp_open(struct net_device *d
+ 
+ irq_error:
+ 	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++)
+-		hrtimer_cancel(&priv->tx_queue[chan].txtimer);
++		hrtimer_cancel(&priv->dma_conf.tx_queue[chan].txtimer);
+ 
+ 	stmmac_hw_teardown(dev);
+ init_error:
+@@ -6625,8 +6629,8 @@ int stmmac_xsk_wakeup(struct net_device
+ 	    queue >= priv->plat->tx_queues_to_use)
+ 		return -EINVAL;
+ 
+-	rx_q = &priv->rx_queue[queue];
+-	tx_q = &priv->tx_queue[queue];
++	rx_q = &priv->dma_conf.rx_queue[queue];
++	tx_q = &priv->dma_conf.tx_queue[queue];
+ 	ch = &priv->channel[queue];
+ 
+ 	if (!rx_q->xsk_pool && !tx_q->xsk_pool)
+@@ -6882,8 +6886,8 @@ int stmmac_reinit_ringparam(struct net_d
+ 	if (netif_running(dev))
+ 		stmmac_release(dev);
+ 
+-	priv->dma_rx_size = rx_size;
+-	priv->dma_tx_size = tx_size;
++	priv->dma_conf.dma_rx_size = rx_size;
++	priv->dma_conf.dma_tx_size = tx_size;
+ 
+ 	if (netif_running(dev))
+ 		ret = stmmac_open(dev);
+@@ -7329,7 +7333,7 @@ int stmmac_suspend(struct device *dev)
+ 	stmmac_disable_all_queues(priv);
+ 
+ 	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++)
+-		hrtimer_cancel(&priv->tx_queue[chan].txtimer);
++		hrtimer_cancel(&priv->dma_conf.tx_queue[chan].txtimer);
+ 
+ 	if (priv->eee_enabled) {
+ 		priv->tx_path_in_lpi_mode = false;
+@@ -7380,7 +7384,7 @@ EXPORT_SYMBOL_GPL(stmmac_suspend);
+ 
+ static void stmmac_reset_rx_queue(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 
+ 	rx_q->cur_rx = 0;
+ 	rx_q->dirty_rx = 0;
+@@ -7388,7 +7392,7 @@ static void stmmac_reset_rx_queue(struct
+ 
+ static void stmmac_reset_tx_queue(struct stmmac_priv *priv, u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
+ 
+ 	tx_q->cur_tx = 0;
+ 	tx_q->dirty_tx = 0;
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+@@ -795,8 +795,8 @@ static int stmmac_test_flowctrl(struct s
+ 		struct stmmac_channel *ch = &priv->channel[i];
+ 		u32 tail;
+ 
+-		tail = priv->rx_queue[i].dma_rx_phy +
+-			(priv->dma_rx_size * sizeof(struct dma_desc));
++		tail = priv->dma_conf.rx_queue[i].dma_rx_phy +
++			(priv->dma_conf.dma_rx_size * sizeof(struct dma_desc));
+ 
+ 		stmmac_set_rx_tail_ptr(priv, priv->ioaddr, tail, i);
+ 		stmmac_start_rx(priv, priv->ioaddr, i);
+@@ -1680,7 +1680,7 @@ cleanup:
+ static int __stmmac_test_jumbo(struct stmmac_priv *priv, u16 queue)
+ {
+ 	struct stmmac_packet_attrs attr = { };
+-	int size = priv->dma_buf_sz;
++	int size = priv->dma_conf.dma_buf_sz;
+ 
+ 	attr.dst = priv->dev->dev_addr;
+ 	attr.max_size = size - ETH_FCS_LEN;
+@@ -1763,7 +1763,7 @@ static int stmmac_test_tbs(struct stmmac
+ 
+ 	/* Find first TBS enabled Queue, if any */
+ 	for (i = 0; i < priv->plat->tx_queues_to_use; i++)
+-		if (priv->tx_queue[i].tbs & STMMAC_TBS_AVAIL)
++		if (priv->dma_conf.tx_queue[i].tbs & STMMAC_TBS_AVAIL)
+ 			break;
+ 
+ 	if (i >= priv->plat->tx_queues_to_use)
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+@@ -970,13 +970,13 @@ static int tc_setup_etf(struct stmmac_pr
+ 		return -EOPNOTSUPP;
+ 	if (qopt->queue >= priv->plat->tx_queues_to_use)
+ 		return -EINVAL;
+-	if (!(priv->tx_queue[qopt->queue].tbs & STMMAC_TBS_AVAIL))
++	if (!(priv->dma_conf.tx_queue[qopt->queue].tbs & STMMAC_TBS_AVAIL))
+ 		return -EINVAL;
+ 
+ 	if (qopt->enable)
+-		priv->tx_queue[qopt->queue].tbs |= STMMAC_TBS_EN;
++		priv->dma_conf.tx_queue[qopt->queue].tbs |= STMMAC_TBS_EN;
+ 	else
+-		priv->tx_queue[qopt->queue].tbs &= ~STMMAC_TBS_EN;
++		priv->dma_conf.tx_queue[qopt->queue].tbs &= ~STMMAC_TBS_EN;
+ 
+ 	netdev_info(priv->dev, "%s ETF for Queue %d\n",
+ 		    qopt->enable ? "enabled" : "disabled", qopt->queue);
diff --git a/target/linux/generic/backport-5.15/775-v6.0-04-net-ethernet-stmicro-stmmac-generate-stmmac-dma-conf.patch b/target/linux/generic/backport-5.15/775-v6.0-04-net-ethernet-stmicro-stmmac-generate-stmmac-dma-conf.patch
new file mode 100644
index 0000000000..c8544fcda3
--- /dev/null
+++ b/target/linux/generic/backport-5.15/775-v6.0-04-net-ethernet-stmicro-stmmac-generate-stmmac-dma-conf.patch
@@ -0,0 +1,1161 @@
+From ba39b344e9240a4a5fd4ab8178200b85cd1809da Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Sat, 23 Jul 2022 16:29:32 +0200
+Subject: [PATCH 4/5] net: ethernet: stmicro: stmmac: generate stmmac dma conf
+ before open
+
+Rework the driver to generate the stmmac dma_conf before stmmac_open.
+This permits a function to first check if it's possible to allocate a
+new dma_config and then pass it directly to __stmmac_open and "open" the
+interface with the new configuration.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ .../net/ethernet/stmicro/stmmac/stmmac_main.c | 462 +++++++++++-------
+ 1 file changed, 289 insertions(+), 173 deletions(-)
+
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+@@ -1284,7 +1284,8 @@ static int stmmac_phy_setup(struct stmma
+ 	return 0;
+ }
+ 
+-static void stmmac_display_rx_rings(struct stmmac_priv *priv)
++static void stmmac_display_rx_rings(struct stmmac_priv *priv,
++				    struct stmmac_dma_conf *dma_conf)
+ {
+ 	u32 rx_cnt = priv->plat->rx_queues_to_use;
+ 	unsigned int desc_size;
+@@ -1293,7 +1294,7 @@ static void stmmac_display_rx_rings(stru
+ 
+ 	/* Display RX rings */
+ 	for (queue = 0; queue < rx_cnt; queue++) {
+-		struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
++		struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 
+ 		pr_info("\tRX Queue %u rings\n", queue);
+ 
+@@ -1306,12 +1307,13 @@ static void stmmac_display_rx_rings(stru
+ 		}
+ 
+ 		/* Display RX ring */
+-		stmmac_display_ring(priv, head_rx, priv->dma_conf.dma_rx_size, true,
++		stmmac_display_ring(priv, head_rx, dma_conf->dma_rx_size, true,
+ 				    rx_q->dma_rx_phy, desc_size);
+ 	}
+ }
+ 
+-static void stmmac_display_tx_rings(struct stmmac_priv *priv)
++static void stmmac_display_tx_rings(struct stmmac_priv *priv,
++				    struct stmmac_dma_conf *dma_conf)
+ {
+ 	u32 tx_cnt = priv->plat->tx_queues_to_use;
+ 	unsigned int desc_size;
+@@ -1320,7 +1322,7 @@ static void stmmac_display_tx_rings(stru
+ 
+ 	/* Display TX rings */
+ 	for (queue = 0; queue < tx_cnt; queue++) {
+-		struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
++		struct stmmac_tx_queue *tx_q = &dma_conf->tx_queue[queue];
+ 
+ 		pr_info("\tTX Queue %d rings\n", queue);
+ 
+@@ -1335,18 +1337,19 @@ static void stmmac_display_tx_rings(stru
+ 			desc_size = sizeof(struct dma_desc);
+ 		}
+ 
+-		stmmac_display_ring(priv, head_tx, priv->dma_conf.dma_tx_size, false,
++		stmmac_display_ring(priv, head_tx, dma_conf->dma_tx_size, false,
+ 				    tx_q->dma_tx_phy, desc_size);
+ 	}
+ }
+ 
+-static void stmmac_display_rings(struct stmmac_priv *priv)
++static void stmmac_display_rings(struct stmmac_priv *priv,
++				 struct stmmac_dma_conf *dma_conf)
+ {
+ 	/* Display RX ring */
+-	stmmac_display_rx_rings(priv);
++	stmmac_display_rx_rings(priv, dma_conf);
+ 
+ 	/* Display TX ring */
+-	stmmac_display_tx_rings(priv);
++	stmmac_display_tx_rings(priv, dma_conf);
+ }
+ 
+ static int stmmac_set_bfsize(int mtu, int bufsize)
+@@ -1370,44 +1373,50 @@ static int stmmac_set_bfsize(int mtu, in
+ /**
+  * stmmac_clear_rx_descriptors - clear RX descriptors
+  * @priv: driver private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: RX queue index
+  * Description: this function is called to clear the RX descriptors
+  * in case of both basic and extended descriptors are used.
+  */
+-static void stmmac_clear_rx_descriptors(struct stmmac_priv *priv, u32 queue)
++static void stmmac_clear_rx_descriptors(struct stmmac_priv *priv,
++					struct stmmac_dma_conf *dma_conf,
++					u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 	int i;
+ 
+ 	/* Clear the RX descriptors */
+-	for (i = 0; i < priv->dma_conf.dma_rx_size; i++)
++	for (i = 0; i < dma_conf->dma_rx_size; i++)
+ 		if (priv->extend_desc)
+ 			stmmac_init_rx_desc(priv, &rx_q->dma_erx[i].basic,
+ 					priv->use_riwt, priv->mode,
+-					(i == priv->dma_conf.dma_rx_size - 1),
+-					priv->dma_conf.dma_buf_sz);
++					(i == dma_conf->dma_rx_size - 1),
++					dma_conf->dma_buf_sz);
+ 		else
+ 			stmmac_init_rx_desc(priv, &rx_q->dma_rx[i],
+ 					priv->use_riwt, priv->mode,
+-					(i == priv->dma_conf.dma_rx_size - 1),
+-					priv->dma_conf.dma_buf_sz);
++					(i == dma_conf->dma_rx_size - 1),
++					dma_conf->dma_buf_sz);
+ }
+ 
+ /**
+  * stmmac_clear_tx_descriptors - clear tx descriptors
+  * @priv: driver private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: TX queue index.
+  * Description: this function is called to clear the TX descriptors
+  * in case of both basic and extended descriptors are used.
+  */
+-static void stmmac_clear_tx_descriptors(struct stmmac_priv *priv, u32 queue)
++static void stmmac_clear_tx_descriptors(struct stmmac_priv *priv,
++					struct stmmac_dma_conf *dma_conf,
++					u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &dma_conf->tx_queue[queue];
+ 	int i;
+ 
+ 	/* Clear the TX descriptors */
+-	for (i = 0; i < priv->dma_conf.dma_tx_size; i++) {
+-		int last = (i == (priv->dma_conf.dma_tx_size - 1));
++	for (i = 0; i < dma_conf->dma_tx_size; i++) {
++		int last = (i == (dma_conf->dma_tx_size - 1));
+ 		struct dma_desc *p;
+ 
+ 		if (priv->extend_desc)
+@@ -1424,10 +1433,12 @@ static void stmmac_clear_tx_descriptors(
+ /**
+  * stmmac_clear_descriptors - clear descriptors
+  * @priv: driver private structure
++ * @dma_conf: structure to take the dma data
+  * Description: this function is called to clear the TX and RX descriptors
+  * in case of both basic and extended descriptors are used.
+  */
+-static void stmmac_clear_descriptors(struct stmmac_priv *priv)
++static void stmmac_clear_descriptors(struct stmmac_priv *priv,
++				     struct stmmac_dma_conf *dma_conf)
+ {
+ 	u32 rx_queue_cnt = priv->plat->rx_queues_to_use;
+ 	u32 tx_queue_cnt = priv->plat->tx_queues_to_use;
+@@ -1435,16 +1446,17 @@ static void stmmac_clear_descriptors(str
+ 
+ 	/* Clear the RX descriptors */
+ 	for (queue = 0; queue < rx_queue_cnt; queue++)
+-		stmmac_clear_rx_descriptors(priv, queue);
++		stmmac_clear_rx_descriptors(priv, dma_conf, queue);
+ 
+ 	/* Clear the TX descriptors */
+ 	for (queue = 0; queue < tx_queue_cnt; queue++)
+-		stmmac_clear_tx_descriptors(priv, queue);
++		stmmac_clear_tx_descriptors(priv, dma_conf, queue);
+ }
+ 
+ /**
+  * stmmac_init_rx_buffers - init the RX descriptor buffer.
+  * @priv: driver private structure
++ * @dma_conf: structure to take the dma data
+  * @p: descriptor pointer
+  * @i: descriptor index
+  * @flags: gfp flag
+@@ -1452,10 +1464,12 @@ static void stmmac_clear_descriptors(str
+  * Description: this function is called to allocate a receive buffer, perform
+  * the DMA mapping and init the descriptor.
+  */
+-static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p,
++static int stmmac_init_rx_buffers(struct stmmac_priv *priv,
++				  struct stmmac_dma_conf *dma_conf,
++				  struct dma_desc *p,
+ 				  int i, gfp_t flags, u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 	struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
+ 
+ 	if (!buf->page) {
+@@ -1480,7 +1494,7 @@ static int stmmac_init_rx_buffers(struct
+ 	buf->addr = page_pool_get_dma_addr(buf->page) + buf->page_offset;
+ 
+ 	stmmac_set_desc_addr(priv, p, buf->addr);
+-	if (priv->dma_conf.dma_buf_sz == BUF_SIZE_16KiB)
++	if (dma_conf->dma_buf_sz == BUF_SIZE_16KiB)
+ 		stmmac_init_desc3(priv, p);
+ 
+ 	return 0;
+@@ -1489,12 +1503,13 @@ static int stmmac_init_rx_buffers(struct
+ /**
+  * stmmac_free_rx_buffer - free RX dma buffers
+  * @priv: private structure
+- * @queue: RX queue index
++ * @rx_q: RX queue
+  * @i: buffer index.
+  */
+-static void stmmac_free_rx_buffer(struct stmmac_priv *priv, u32 queue, int i)
++static void stmmac_free_rx_buffer(struct stmmac_priv *priv,
++				  struct stmmac_rx_queue *rx_q,
++				  int i)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
+ 	struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
+ 
+ 	if (buf->page)
+@@ -1509,12 +1524,15 @@ static void stmmac_free_rx_buffer(struct
+ /**
+  * stmmac_free_tx_buffer - free RX dma buffers
+  * @priv: private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: RX queue index
+  * @i: buffer index.
+  */
+-static void stmmac_free_tx_buffer(struct stmmac_priv *priv, u32 queue, int i)
++static void stmmac_free_tx_buffer(struct stmmac_priv *priv,
++				  struct stmmac_dma_conf *dma_conf,
++				  u32 queue, int i)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &dma_conf->tx_queue[queue];
+ 
+ 	if (tx_q->tx_skbuff_dma[i].buf &&
+ 	    tx_q->tx_skbuff_dma[i].buf_type != STMMAC_TXBUF_T_XDP_TX) {
+@@ -1553,23 +1571,28 @@ static void stmmac_free_tx_buffer(struct
+ /**
+  * dma_free_rx_skbufs - free RX dma buffers
+  * @priv: private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: RX queue index
+  */
+-static void dma_free_rx_skbufs(struct stmmac_priv *priv, u32 queue)
++static void dma_free_rx_skbufs(struct stmmac_priv *priv,
++			       struct stmmac_dma_conf *dma_conf,
++			       u32 queue)
+ {
++	struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 	int i;
+ 
+-	for (i = 0; i < priv->dma_conf.dma_rx_size; i++)
+-		stmmac_free_rx_buffer(priv, queue, i);
++	for (i = 0; i < dma_conf->dma_rx_size; i++)
++		stmmac_free_rx_buffer(priv, rx_q, i);
+ }
+ 
+-static int stmmac_alloc_rx_buffers(struct stmmac_priv *priv, u32 queue,
+-				   gfp_t flags)
++static int stmmac_alloc_rx_buffers(struct stmmac_priv *priv,
++				   struct stmmac_dma_conf *dma_conf,
++				   u32 queue, gfp_t flags)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 	int i;
+ 
+-	for (i = 0; i < priv->dma_conf.dma_rx_size; i++) {
++	for (i = 0; i < dma_conf->dma_rx_size; i++) {
+ 		struct dma_desc *p;
+ 		int ret;
+ 
+@@ -1578,7 +1601,7 @@ static int stmmac_alloc_rx_buffers(struc
+ 		else
+ 			p = rx_q->dma_rx + i;
+ 
+-		ret = stmmac_init_rx_buffers(priv, p, i, flags,
++		ret = stmmac_init_rx_buffers(priv, dma_conf, p, i, flags,
+ 					     queue);
+ 		if (ret)
+ 			return ret;
+@@ -1592,14 +1615,17 @@ static int stmmac_alloc_rx_buffers(struc
+ /**
+  * dma_free_rx_xskbufs - free RX dma buffers from XSK pool
+  * @priv: private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: RX queue index
+  */
+-static void dma_free_rx_xskbufs(struct stmmac_priv *priv, u32 queue)
++static void dma_free_rx_xskbufs(struct stmmac_priv *priv,
++				struct stmmac_dma_conf *dma_conf,
++				u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 	int i;
+ 
+-	for (i = 0; i < priv->dma_conf.dma_rx_size; i++) {
++	for (i = 0; i < dma_conf->dma_rx_size; i++) {
+ 		struct stmmac_rx_buffer *buf = &rx_q->buf_pool[i];
+ 
+ 		if (!buf->xdp)
+@@ -1610,12 +1636,14 @@ static void dma_free_rx_xskbufs(struct s
+ 	}
+ }
+ 
+-static int stmmac_alloc_rx_buffers_zc(struct stmmac_priv *priv, u32 queue)
++static int stmmac_alloc_rx_buffers_zc(struct stmmac_priv *priv,
++				      struct stmmac_dma_conf *dma_conf,
++				      u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 	int i;
+ 
+-	for (i = 0; i < priv->dma_conf.dma_rx_size; i++) {
++	for (i = 0; i < dma_conf->dma_rx_size; i++) {
+ 		struct stmmac_rx_buffer *buf;
+ 		dma_addr_t dma_addr;
+ 		struct dma_desc *p;
+@@ -1650,22 +1678,25 @@ static struct xsk_buff_pool *stmmac_get_
+ /**
+  * __init_dma_rx_desc_rings - init the RX descriptor ring (per queue)
+  * @priv: driver private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: RX queue index
+  * @flags: gfp flag.
+  * Description: this function initializes the DMA RX descriptors
+  * and allocates the socket buffers. It supports the chained and ring
+  * modes.
+  */
+-static int __init_dma_rx_desc_rings(struct stmmac_priv *priv, u32 queue, gfp_t flags)
++static int __init_dma_rx_desc_rings(struct stmmac_priv *priv,
++				    struct stmmac_dma_conf *dma_conf,
++				    u32 queue, gfp_t flags)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 	int ret;
+ 
+ 	netif_dbg(priv, probe, priv->dev,
+ 		  "(%s) dma_rx_phy=0x%08x\n", __func__,
+ 		  (u32)rx_q->dma_rx_phy);
+ 
+-	stmmac_clear_rx_descriptors(priv, queue);
++	stmmac_clear_rx_descriptors(priv, dma_conf, queue);
+ 
+ 	xdp_rxq_info_unreg_mem_model(&rx_q->xdp_rxq);
+ 
+@@ -1692,9 +1723,9 @@ static int __init_dma_rx_desc_rings(stru
+ 		/* RX XDP ZC buffer pool may not be populated, e.g.
+ 		 * xdpsock TX-only.
+ 		 */
+-		stmmac_alloc_rx_buffers_zc(priv, queue);
++		stmmac_alloc_rx_buffers_zc(priv, dma_conf, queue);
+ 	} else {
+-		ret = stmmac_alloc_rx_buffers(priv, queue, flags);
++		ret = stmmac_alloc_rx_buffers(priv, dma_conf, queue, flags);
+ 		if (ret < 0)
+ 			return -ENOMEM;
+ 	}
+@@ -1704,17 +1735,19 @@ static int __init_dma_rx_desc_rings(stru
+ 		if (priv->extend_desc)
+ 			stmmac_mode_init(priv, rx_q->dma_erx,
+ 					 rx_q->dma_rx_phy,
+-					 priv->dma_conf.dma_rx_size, 1);
++					 dma_conf->dma_rx_size, 1);
+ 		else
+ 			stmmac_mode_init(priv, rx_q->dma_rx,
+ 					 rx_q->dma_rx_phy,
+-					 priv->dma_conf.dma_rx_size, 0);
++					 dma_conf->dma_rx_size, 0);
+ 	}
+ 
+ 	return 0;
+ }
+ 
+-static int init_dma_rx_desc_rings(struct net_device *dev, gfp_t flags)
++static int init_dma_rx_desc_rings(struct net_device *dev,
++				  struct stmmac_dma_conf *dma_conf,
++				  gfp_t flags)
+ {
+ 	struct stmmac_priv *priv = netdev_priv(dev);
+ 	u32 rx_count = priv->plat->rx_queues_to_use;
+@@ -1726,7 +1759,7 @@ static int init_dma_rx_desc_rings(struct
+ 		  "SKB addresses:\nskb\t\tskb data\tdma data\n");
+ 
+ 	for (queue = 0; queue < rx_count; queue++) {
+-		ret = __init_dma_rx_desc_rings(priv, queue, flags);
++		ret = __init_dma_rx_desc_rings(priv, dma_conf, queue, flags);
+ 		if (ret)
+ 			goto err_init_rx_buffers;
+ 	}
+@@ -1735,12 +1768,12 @@ static int init_dma_rx_desc_rings(struct
+ 
+ err_init_rx_buffers:
+ 	while (queue >= 0) {
+-		struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
++		struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 
+ 		if (rx_q->xsk_pool)
+-			dma_free_rx_xskbufs(priv, queue);
++			dma_free_rx_xskbufs(priv, dma_conf, queue);
+ 		else
+-			dma_free_rx_skbufs(priv, queue);
++			dma_free_rx_skbufs(priv, dma_conf, queue);
+ 
+ 		rx_q->buf_alloc_num = 0;
+ 		rx_q->xsk_pool = NULL;
+@@ -1757,14 +1790,17 @@ err_init_rx_buffers:
+ /**
+  * __init_dma_tx_desc_rings - init the TX descriptor ring (per queue)
+  * @priv: driver private structure
+- * @queue : TX queue index
++ * @dma_conf: structure to take the dma data
++ * @queue: TX queue index
+  * Description: this function initializes the DMA TX descriptors
+  * and allocates the socket buffers. It supports the chained and ring
+  * modes.
+  */
+-static int __init_dma_tx_desc_rings(struct stmmac_priv *priv, u32 queue)
++static int __init_dma_tx_desc_rings(struct stmmac_priv *priv,
++				    struct stmmac_dma_conf *dma_conf,
++				    u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &dma_conf->tx_queue[queue];
+ 	int i;
+ 
+ 	netif_dbg(priv, probe, priv->dev,
+@@ -1776,16 +1812,16 @@ static int __init_dma_tx_desc_rings(stru
+ 		if (priv->extend_desc)
+ 			stmmac_mode_init(priv, tx_q->dma_etx,
+ 					 tx_q->dma_tx_phy,
+-					 priv->dma_conf.dma_tx_size, 1);
++					 dma_conf->dma_tx_size, 1);
+ 		else if (!(tx_q->tbs & STMMAC_TBS_AVAIL))
+ 			stmmac_mode_init(priv, tx_q->dma_tx,
+ 					 tx_q->dma_tx_phy,
+-					 priv->dma_conf.dma_tx_size, 0);
++					 dma_conf->dma_tx_size, 0);
+ 	}
+ 
+ 	tx_q->xsk_pool = stmmac_get_xsk_pool(priv, queue);
+ 
+-	for (i = 0; i < priv->dma_conf.dma_tx_size; i++) {
++	for (i = 0; i < dma_conf->dma_tx_size; i++) {
+ 		struct dma_desc *p;
+ 
+ 		if (priv->extend_desc)
+@@ -1807,7 +1843,8 @@ static int __init_dma_tx_desc_rings(stru
+ 	return 0;
+ }
+ 
+-static int init_dma_tx_desc_rings(struct net_device *dev)
++static int init_dma_tx_desc_rings(struct net_device *dev,
++				  struct stmmac_dma_conf *dma_conf)
+ {
+ 	struct stmmac_priv *priv = netdev_priv(dev);
+ 	u32 tx_queue_cnt;
+@@ -1816,7 +1853,7 @@ static int init_dma_tx_desc_rings(struct
+ 	tx_queue_cnt = priv->plat->tx_queues_to_use;
+ 
+ 	for (queue = 0; queue < tx_queue_cnt; queue++)
+-		__init_dma_tx_desc_rings(priv, queue);
++		__init_dma_tx_desc_rings(priv, dma_conf, queue);
+ 
+ 	return 0;
+ }
+@@ -1824,26 +1861,29 @@ static int init_dma_tx_desc_rings(struct
+ /**
+  * init_dma_desc_rings - init the RX/TX descriptor rings
+  * @dev: net device structure
++ * @dma_conf: structure to take the dma data
+  * @flags: gfp flag.
+  * Description: this function initializes the DMA RX/TX descriptors
+  * and allocates the socket buffers. It supports the chained and ring
+  * modes.
+  */
+-static int init_dma_desc_rings(struct net_device *dev, gfp_t flags)
++static int init_dma_desc_rings(struct net_device *dev,
++			       struct stmmac_dma_conf *dma_conf,
++			       gfp_t flags)
+ {
+ 	struct stmmac_priv *priv = netdev_priv(dev);
+ 	int ret;
+ 
+-	ret = init_dma_rx_desc_rings(dev, flags);
++	ret = init_dma_rx_desc_rings(dev, dma_conf, flags);
+ 	if (ret)
+ 		return ret;
+ 
+-	ret = init_dma_tx_desc_rings(dev);
++	ret = init_dma_tx_desc_rings(dev, dma_conf);
+ 
+-	stmmac_clear_descriptors(priv);
++	stmmac_clear_descriptors(priv, dma_conf);
+ 
+ 	if (netif_msg_hw(priv))
+-		stmmac_display_rings(priv);
++		stmmac_display_rings(priv, dma_conf);
+ 
+ 	return ret;
+ }
+@@ -1851,17 +1891,20 @@ static int init_dma_desc_rings(struct ne
+ /**
+  * dma_free_tx_skbufs - free TX dma buffers
+  * @priv: private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: TX queue index
+  */
+-static void dma_free_tx_skbufs(struct stmmac_priv *priv, u32 queue)
++static void dma_free_tx_skbufs(struct stmmac_priv *priv,
++			       struct stmmac_dma_conf *dma_conf,
++			       u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &dma_conf->tx_queue[queue];
+ 	int i;
+ 
+ 	tx_q->xsk_frames_done = 0;
+ 
+-	for (i = 0; i < priv->dma_conf.dma_tx_size; i++)
+-		stmmac_free_tx_buffer(priv, queue, i);
++	for (i = 0; i < dma_conf->dma_tx_size; i++)
++		stmmac_free_tx_buffer(priv, dma_conf, queue, i);
+ 
+ 	if (tx_q->xsk_pool && tx_q->xsk_frames_done) {
+ 		xsk_tx_completed(tx_q->xsk_pool, tx_q->xsk_frames_done);
+@@ -1880,34 +1923,37 @@ static void stmmac_free_tx_skbufs(struct
+ 	u32 queue;
+ 
+ 	for (queue = 0; queue < tx_queue_cnt; queue++)
+-		dma_free_tx_skbufs(priv, queue);
++		dma_free_tx_skbufs(priv, &priv->dma_conf, queue);
+ }
+ 
+ /**
+  * __free_dma_rx_desc_resources - free RX dma desc resources (per queue)
+  * @priv: private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: RX queue index
+  */
+-static void __free_dma_rx_desc_resources(struct stmmac_priv *priv, u32 queue)
++static void __free_dma_rx_desc_resources(struct stmmac_priv *priv,
++					 struct stmmac_dma_conf *dma_conf,
++					 u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 
+ 	/* Release the DMA RX socket buffers */
+ 	if (rx_q->xsk_pool)
+-		dma_free_rx_xskbufs(priv, queue);
++		dma_free_rx_xskbufs(priv, dma_conf, queue);
+ 	else
+-		dma_free_rx_skbufs(priv, queue);
++		dma_free_rx_skbufs(priv, dma_conf, queue);
+ 
+ 	rx_q->buf_alloc_num = 0;
+ 	rx_q->xsk_pool = NULL;
+ 
+ 	/* Free DMA regions of consistent memory previously allocated */
+ 	if (!priv->extend_desc)
+-		dma_free_coherent(priv->device, priv->dma_conf.dma_rx_size *
++		dma_free_coherent(priv->device, dma_conf->dma_rx_size *
+ 				  sizeof(struct dma_desc),
+ 				  rx_q->dma_rx, rx_q->dma_rx_phy);
+ 	else
+-		dma_free_coherent(priv->device, priv->dma_conf.dma_rx_size *
++		dma_free_coherent(priv->device, dma_conf->dma_rx_size *
+ 				  sizeof(struct dma_extended_desc),
+ 				  rx_q->dma_erx, rx_q->dma_rx_phy);
+ 
+@@ -1919,29 +1965,33 @@ static void __free_dma_rx_desc_resources
+ 		page_pool_destroy(rx_q->page_pool);
+ }
+ 
+-static void free_dma_rx_desc_resources(struct stmmac_priv *priv)
++static void free_dma_rx_desc_resources(struct stmmac_priv *priv,
++				       struct stmmac_dma_conf *dma_conf)
+ {
+ 	u32 rx_count = priv->plat->rx_queues_to_use;
+ 	u32 queue;
+ 
+ 	/* Free RX queue resources */
+ 	for (queue = 0; queue < rx_count; queue++)
+-		__free_dma_rx_desc_resources(priv, queue);
++		__free_dma_rx_desc_resources(priv, dma_conf, queue);
+ }
+ 
+ /**
+  * __free_dma_tx_desc_resources - free TX dma desc resources (per queue)
+  * @priv: private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: TX queue index
+  */
+-static void __free_dma_tx_desc_resources(struct stmmac_priv *priv, u32 queue)
++static void __free_dma_tx_desc_resources(struct stmmac_priv *priv,
++					 struct stmmac_dma_conf *dma_conf,
++					 u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &dma_conf->tx_queue[queue];
+ 	size_t size;
+ 	void *addr;
+ 
+ 	/* Release the DMA TX socket buffers */
+-	dma_free_tx_skbufs(priv, queue);
++	dma_free_tx_skbufs(priv, dma_conf, queue);
+ 
+ 	if (priv->extend_desc) {
+ 		size = sizeof(struct dma_extended_desc);
+@@ -1954,7 +2004,7 @@ static void __free_dma_tx_desc_resources
+ 		addr = tx_q->dma_tx;
+ 	}
+ 
+-	size *= priv->dma_conf.dma_tx_size;
++	size *= dma_conf->dma_tx_size;
+ 
+ 	dma_free_coherent(priv->device, size, addr, tx_q->dma_tx_phy);
+ 
+@@ -1962,28 +2012,32 @@ static void __free_dma_tx_desc_resources
+ 	kfree(tx_q->tx_skbuff);
+ }
+ 
+-static void free_dma_tx_desc_resources(struct stmmac_priv *priv)
++static void free_dma_tx_desc_resources(struct stmmac_priv *priv,
++				       struct stmmac_dma_conf *dma_conf)
+ {
+ 	u32 tx_count = priv->plat->tx_queues_to_use;
+ 	u32 queue;
+ 
+ 	/* Free TX queue resources */
+ 	for (queue = 0; queue < tx_count; queue++)
+-		__free_dma_tx_desc_resources(priv, queue);
++		__free_dma_tx_desc_resources(priv, dma_conf, queue);
+ }
+ 
+ /**
+  * __alloc_dma_rx_desc_resources - alloc RX resources (per queue).
+  * @priv: private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: RX queue index
+  * Description: according to which descriptor can be used (extend or basic)
+  * this function allocates the resources for TX and RX paths. In case of
+  * reception, for example, it pre-allocated the RX socket buffer in order to
+  * allow zero-copy mechanism.
+  */
+-static int __alloc_dma_rx_desc_resources(struct stmmac_priv *priv, u32 queue)
++static int __alloc_dma_rx_desc_resources(struct stmmac_priv *priv,
++					 struct stmmac_dma_conf *dma_conf,
++					 u32 queue)
+ {
+-	struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
++	struct stmmac_rx_queue *rx_q = &dma_conf->rx_queue[queue];
+ 	struct stmmac_channel *ch = &priv->channel[queue];
+ 	bool xdp_prog = stmmac_xdp_is_enabled(priv);
+ 	struct page_pool_params pp_params = { 0 };
+@@ -1995,8 +2049,8 @@ static int __alloc_dma_rx_desc_resources
+ 	rx_q->priv_data = priv;
+ 
+ 	pp_params.flags = PP_FLAG_DMA_MAP | PP_FLAG_DMA_SYNC_DEV;
+-	pp_params.pool_size = priv->dma_conf.dma_rx_size;
+-	num_pages = DIV_ROUND_UP(priv->dma_conf.dma_buf_sz, PAGE_SIZE);
++	pp_params.pool_size = dma_conf->dma_rx_size;
++	num_pages = DIV_ROUND_UP(dma_conf->dma_buf_sz, PAGE_SIZE);
+ 	pp_params.order = ilog2(num_pages);
+ 	pp_params.nid = dev_to_node(priv->device);
+ 	pp_params.dev = priv->device;
+@@ -2011,7 +2065,7 @@ static int __alloc_dma_rx_desc_resources
+ 		return ret;
+ 	}
+ 
+-	rx_q->buf_pool = kcalloc(priv->dma_conf.dma_rx_size,
++	rx_q->buf_pool = kcalloc(dma_conf->dma_rx_size,
+ 				 sizeof(*rx_q->buf_pool),
+ 				 GFP_KERNEL);
+ 	if (!rx_q->buf_pool)
+@@ -2019,7 +2073,7 @@ static int __alloc_dma_rx_desc_resources
+ 
+ 	if (priv->extend_desc) {
+ 		rx_q->dma_erx = dma_alloc_coherent(priv->device,
+-						   priv->dma_conf.dma_rx_size *
++						   dma_conf->dma_rx_size *
+ 						   sizeof(struct dma_extended_desc),
+ 						   &rx_q->dma_rx_phy,
+ 						   GFP_KERNEL);
+@@ -2028,7 +2082,7 @@ static int __alloc_dma_rx_desc_resources
+ 
+ 	} else {
+ 		rx_q->dma_rx = dma_alloc_coherent(priv->device,
+-						  priv->dma_conf.dma_rx_size *
++						  dma_conf->dma_rx_size *
+ 						  sizeof(struct dma_desc),
+ 						  &rx_q->dma_rx_phy,
+ 						  GFP_KERNEL);
+@@ -2053,7 +2107,8 @@ static int __alloc_dma_rx_desc_resources
+ 	return 0;
+ }
+ 
+-static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv)
++static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv,
++				       struct stmmac_dma_conf *dma_conf)
+ {
+ 	u32 rx_count = priv->plat->rx_queues_to_use;
+ 	u32 queue;
+@@ -2061,7 +2116,7 @@ static int alloc_dma_rx_desc_resources(s
+ 
+ 	/* RX queues buffers and DMA */
+ 	for (queue = 0; queue < rx_count; queue++) {
+-		ret = __alloc_dma_rx_desc_resources(priv, queue);
++		ret = __alloc_dma_rx_desc_resources(priv, dma_conf, queue);
+ 		if (ret)
+ 			goto err_dma;
+ 	}
+@@ -2069,7 +2124,7 @@ static int alloc_dma_rx_desc_resources(s
+ 	return 0;
+ 
+ err_dma:
+-	free_dma_rx_desc_resources(priv);
++	free_dma_rx_desc_resources(priv, dma_conf);
+ 
+ 	return ret;
+ }
+@@ -2077,28 +2132,31 @@ err_dma:
+ /**
+  * __alloc_dma_tx_desc_resources - alloc TX resources (per queue).
+  * @priv: private structure
++ * @dma_conf: structure to take the dma data
+  * @queue: TX queue index
+  * Description: according to which descriptor can be used (extend or basic)
+  * this function allocates the resources for TX and RX paths. In case of
+  * reception, for example, it pre-allocated the RX socket buffer in order to
+  * allow zero-copy mechanism.
+  */
+-static int __alloc_dma_tx_desc_resources(struct stmmac_priv *priv, u32 queue)
++static int __alloc_dma_tx_desc_resources(struct stmmac_priv *priv,
++					 struct stmmac_dma_conf *dma_conf,
++					 u32 queue)
+ {
+-	struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
++	struct stmmac_tx_queue *tx_q = &dma_conf->tx_queue[queue];
+ 	size_t size;
+ 	void *addr;
+ 
+ 	tx_q->queue_index = queue;
+ 	tx_q->priv_data = priv;
+ 
+-	tx_q->tx_skbuff_dma = kcalloc(priv->dma_conf.dma_tx_size,
++	tx_q->tx_skbuff_dma = kcalloc(dma_conf->dma_tx_size,
+ 				      sizeof(*tx_q->tx_skbuff_dma),
+ 				      GFP_KERNEL);
+ 	if (!tx_q->tx_skbuff_dma)
+ 		return -ENOMEM;
+ 
+-	tx_q->tx_skbuff = kcalloc(priv->dma_conf.dma_tx_size,
++	tx_q->tx_skbuff = kcalloc(dma_conf->dma_tx_size,
+ 				  sizeof(struct sk_buff *),
+ 				  GFP_KERNEL);
+ 	if (!tx_q->tx_skbuff)
+@@ -2111,7 +2169,7 @@ static int __alloc_dma_tx_desc_resources
+ 	else
+ 		size = sizeof(struct dma_desc);
+ 
+-	size *= priv->dma_conf.dma_tx_size;
++	size *= dma_conf->dma_tx_size;
+ 
+ 	addr = dma_alloc_coherent(priv->device, size,
+ 				  &tx_q->dma_tx_phy, GFP_KERNEL);
+@@ -2128,7 +2186,8 @@ static int __alloc_dma_tx_desc_resources
+ 	return 0;
+ }
+ 
+-static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv)
++static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv,
++				       struct stmmac_dma_conf *dma_conf)
+ {
+ 	u32 tx_count = priv->plat->tx_queues_to_use;
+ 	u32 queue;
+@@ -2136,7 +2195,7 @@ static int alloc_dma_tx_desc_resources(s
+ 
+ 	/* TX queues buffers and DMA */
+ 	for (queue = 0; queue < tx_count; queue++) {
+-		ret = __alloc_dma_tx_desc_resources(priv, queue);
++		ret = __alloc_dma_tx_desc_resources(priv, dma_conf, queue);
+ 		if (ret)
+ 			goto err_dma;
+ 	}
+@@ -2144,27 +2203,29 @@ static int alloc_dma_tx_desc_resources(s
+ 	return 0;
+ 
+ err_dma:
+-	free_dma_tx_desc_resources(priv);
++	free_dma_tx_desc_resources(priv, dma_conf);
+ 	return ret;
+ }
+ 
+ /**
+  * alloc_dma_desc_resources - alloc TX/RX resources.
+  * @priv: private structure
++ * @dma_conf: structure to take the dma data
+  * Description: according to which descriptor can be used (extend or basic)
+  * this function allocates the resources for TX and RX paths. In case of
+  * reception, for example, it pre-allocated the RX socket buffer in order to
+  * allow zero-copy mechanism.
+  */
+-static int alloc_dma_desc_resources(struct stmmac_priv *priv)
++static int alloc_dma_desc_resources(struct stmmac_priv *priv,
++				    struct stmmac_dma_conf *dma_conf)
+ {
+ 	/* RX Allocation */
+-	int ret = alloc_dma_rx_desc_resources(priv);
++	int ret = alloc_dma_rx_desc_resources(priv, dma_conf);
+ 
+ 	if (ret)
+ 		return ret;
+ 
+-	ret = alloc_dma_tx_desc_resources(priv);
++	ret = alloc_dma_tx_desc_resources(priv, dma_conf);
+ 
+ 	return ret;
+ }
+@@ -2172,16 +2233,18 @@ static int alloc_dma_desc_resources(stru
+ /**
+  * free_dma_desc_resources - free dma desc resources
+  * @priv: private structure
++ * @dma_conf: structure to take the dma data
+  */
+-static void free_dma_desc_resources(struct stmmac_priv *priv)
++static void free_dma_desc_resources(struct stmmac_priv *priv,
++				    struct stmmac_dma_conf *dma_conf)
+ {
+ 	/* Release the DMA TX socket buffers */
+-	free_dma_tx_desc_resources(priv);
++	free_dma_tx_desc_resources(priv, dma_conf);
+ 
+ 	/* Release the DMA RX socket buffers later
+ 	 * to ensure all pending XDP_TX buffers are returned.
+ 	 */
+-	free_dma_rx_desc_resources(priv);
++	free_dma_rx_desc_resources(priv, dma_conf);
+ }
+ 
+ /**
+@@ -2670,8 +2733,8 @@ static void stmmac_tx_err(struct stmmac_
+ 	netif_tx_stop_queue(netdev_get_tx_queue(priv->dev, chan));
+ 
+ 	stmmac_stop_tx_dma(priv, chan);
+-	dma_free_tx_skbufs(priv, chan);
+-	stmmac_clear_tx_descriptors(priv, chan);
++	dma_free_tx_skbufs(priv, &priv->dma_conf, chan);
++	stmmac_clear_tx_descriptors(priv, &priv->dma_conf, chan);
+ 	stmmac_reset_tx_queue(priv, chan);
+ 	stmmac_init_tx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+ 			    tx_q->dma_tx_phy, chan);
+@@ -3668,19 +3731,93 @@ static int stmmac_request_irq(struct net
+ }
+ 
+ /**
+- *  stmmac_open - open entry point of the driver
++ *  stmmac_setup_dma_desc - Generate a dma_conf and allocate DMA queue
++ *  @priv: driver private structure
++ *  @mtu: MTU to setup the dma queue and buf with
++ *  Description: Allocate and generate a dma_conf based on the provided MTU.
++ *  Allocate the Tx/Rx DMA queue and init them.
++ *  Return value:
++ *  the dma_conf allocated struct on success and an appropriate ERR_PTR on failure.
++ */
++static struct stmmac_dma_conf *
++stmmac_setup_dma_desc(struct stmmac_priv *priv, unsigned int mtu)
++{
++	struct stmmac_dma_conf *dma_conf;
++	int chan, bfsize, ret;
++
++	dma_conf = kzalloc(sizeof(*dma_conf), GFP_KERNEL);
++	if (!dma_conf) {
++		netdev_err(priv->dev, "%s: DMA conf allocation failed\n",
++			   __func__);
++		return ERR_PTR(-ENOMEM);
++	}
++
++	bfsize = stmmac_set_16kib_bfsize(priv, mtu);
++	if (bfsize < 0)
++		bfsize = 0;
++
++	if (bfsize < BUF_SIZE_16KiB)
++		bfsize = stmmac_set_bfsize(mtu, 0);
++
++	dma_conf->dma_buf_sz = bfsize;
++	/* Chose the tx/rx size from the already defined one in the
++	 * priv struct. (if defined)
++	 */
++	dma_conf->dma_tx_size = priv->dma_conf.dma_tx_size;
++	dma_conf->dma_rx_size = priv->dma_conf.dma_rx_size;
++
++	if (!dma_conf->dma_tx_size)
++		dma_conf->dma_tx_size = DMA_DEFAULT_TX_SIZE;
++	if (!dma_conf->dma_rx_size)
++		dma_conf->dma_rx_size = DMA_DEFAULT_RX_SIZE;
++
++	/* Earlier check for TBS */
++	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++) {
++		struct stmmac_tx_queue *tx_q = &dma_conf->tx_queue[chan];
++		int tbs_en = priv->plat->tx_queues_cfg[chan].tbs_en;
++
++		/* Setup per-TXQ tbs flag before TX descriptor alloc */
++		tx_q->tbs |= tbs_en ? STMMAC_TBS_AVAIL : 0;
++	}
++
++	ret = alloc_dma_desc_resources(priv, dma_conf);
++	if (ret < 0) {
++		netdev_err(priv->dev, "%s: DMA descriptors allocation failed\n",
++			   __func__);
++		goto alloc_error;
++	}
++
++	ret = init_dma_desc_rings(priv->dev, dma_conf, GFP_KERNEL);
++	if (ret < 0) {
++		netdev_err(priv->dev, "%s: DMA descriptors initialization failed\n",
++			   __func__);
++		goto init_error;
++	}
++
++	return dma_conf;
++
++init_error:
++	free_dma_desc_resources(priv, dma_conf);
++alloc_error:
++	kfree(dma_conf);
++	return ERR_PTR(ret);
++}
++
++/**
++ *  __stmmac_open - open entry point of the driver
+  *  @dev : pointer to the device structure.
++ *  @dma_conf :  structure to take the dma data
+  *  Description:
+  *  This function is the open entry point of the driver.
+  *  Return value:
+  *  0 on success and an appropriate (-)ve integer as defined in errno.h
+  *  file on failure.
+  */
+-static int stmmac_open(struct net_device *dev)
++static int __stmmac_open(struct net_device *dev,
++			 struct stmmac_dma_conf *dma_conf)
+ {
+ 	struct stmmac_priv *priv = netdev_priv(dev);
+ 	int mode = priv->plat->phy_interface;
+-	int bfsize = 0;
+ 	u32 chan;
+ 	int ret;
+ 
+@@ -3707,45 +3844,10 @@ static int stmmac_open(struct net_device
+ 	memset(&priv->xstats, 0, sizeof(struct stmmac_extra_stats));
+ 	priv->xstats.threshold = tc;
+ 
+-	bfsize = stmmac_set_16kib_bfsize(priv, dev->mtu);
+-	if (bfsize < 0)
+-		bfsize = 0;
+-
+-	if (bfsize < BUF_SIZE_16KiB)
+-		bfsize = stmmac_set_bfsize(dev->mtu, priv->dma_conf.dma_buf_sz);
+-
+-	priv->dma_conf.dma_buf_sz = bfsize;
+-	buf_sz = bfsize;
+-
+ 	priv->rx_copybreak = STMMAC_RX_COPYBREAK;
+ 
+-	if (!priv->dma_conf.dma_tx_size)
+-		priv->dma_conf.dma_tx_size = DMA_DEFAULT_TX_SIZE;
+-	if (!priv->dma_conf.dma_rx_size)
+-		priv->dma_conf.dma_rx_size = DMA_DEFAULT_RX_SIZE;
+-
+-	/* Earlier check for TBS */
+-	for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++) {
+-		struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
+-		int tbs_en = priv->plat->tx_queues_cfg[chan].tbs_en;
+-
+-		/* Setup per-TXQ tbs flag before TX descriptor alloc */
+-		tx_q->tbs |= tbs_en ? STMMAC_TBS_AVAIL : 0;
+-	}
+-
+-	ret = alloc_dma_desc_resources(priv);
+-	if (ret < 0) {
+-		netdev_err(priv->dev, "%s: DMA descriptors allocation failed\n",
+-			   __func__);
+-		goto dma_desc_error;
+-	}
+-
+-	ret = init_dma_desc_rings(dev, GFP_KERNEL);
+-	if (ret < 0) {
+-		netdev_err(priv->dev, "%s: DMA descriptors initialization failed\n",
+-			   __func__);
+-		goto init_error;
+-	}
++	buf_sz = dma_conf->dma_buf_sz;
++	memcpy(&priv->dma_conf, dma_conf, sizeof(*dma_conf));
+ 
+ 	stmmac_reset_queues_param(priv);
+ 
+@@ -3779,14 +3881,28 @@ irq_error:
+ 
+ 	stmmac_hw_teardown(dev);
+ init_error:
+-	free_dma_desc_resources(priv);
+-dma_desc_error:
++	free_dma_desc_resources(priv, &priv->dma_conf);
+ 	phylink_disconnect_phy(priv->phylink);
+ init_phy_error:
+ 	pm_runtime_put(priv->device);
+ 	return ret;
+ }
+ 
++static int stmmac_open(struct net_device *dev)
++{
++	struct stmmac_priv *priv = netdev_priv(dev);
++	struct stmmac_dma_conf *dma_conf;
++	int ret;
++
++	dma_conf = stmmac_setup_dma_desc(priv, dev->mtu);
++	if (IS_ERR(dma_conf))
++		return PTR_ERR(dma_conf);
++
++	ret = __stmmac_open(dev, dma_conf);
++	kfree(dma_conf);
++	return ret;
++}
++
+ static void stmmac_fpe_stop_wq(struct stmmac_priv *priv)
+ {
+ 	set_bit(__FPE_REMOVING, &priv->fpe_task_state);
+@@ -3833,7 +3949,7 @@ static int stmmac_release(struct net_dev
+ 	stmmac_stop_all_dma(priv);
+ 
+ 	/* Release and free the Rx/Tx resources */
+-	free_dma_desc_resources(priv);
++	free_dma_desc_resources(priv, &priv->dma_conf);
+ 
+ 	/* Disable the MAC Rx/Tx */
+ 	stmmac_mac_set(priv, priv->ioaddr, false);
+@@ -6368,7 +6484,7 @@ void stmmac_disable_rx_queue(struct stmm
+ 	spin_unlock_irqrestore(&ch->lock, flags);
+ 
+ 	stmmac_stop_rx_dma(priv, queue);
+-	__free_dma_rx_desc_resources(priv, queue);
++	__free_dma_rx_desc_resources(priv, &priv->dma_conf, queue);
+ }
+ 
+ void stmmac_enable_rx_queue(struct stmmac_priv *priv, u32 queue)
+@@ -6379,21 +6495,21 @@ void stmmac_enable_rx_queue(struct stmma
+ 	u32 buf_size;
+ 	int ret;
+ 
+-	ret = __alloc_dma_rx_desc_resources(priv, queue);
++	ret = __alloc_dma_rx_desc_resources(priv, &priv->dma_conf, queue);
+ 	if (ret) {
+ 		netdev_err(priv->dev, "Failed to alloc RX desc.\n");
+ 		return;
+ 	}
+ 
+-	ret = __init_dma_rx_desc_rings(priv, queue, GFP_KERNEL);
++	ret = __init_dma_rx_desc_rings(priv, &priv->dma_conf, queue, GFP_KERNEL);
+ 	if (ret) {
+-		__free_dma_rx_desc_resources(priv, queue);
++		__free_dma_rx_desc_resources(priv, &priv->dma_conf, queue);
+ 		netdev_err(priv->dev, "Failed to init RX desc.\n");
+ 		return;
+ 	}
+ 
+ 	stmmac_reset_rx_queue(priv, queue);
+-	stmmac_clear_rx_descriptors(priv, queue);
++	stmmac_clear_rx_descriptors(priv, &priv->dma_conf, queue);
+ 
+ 	stmmac_init_rx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+ 			    rx_q->dma_rx_phy, rx_q->queue_index);
+@@ -6431,7 +6547,7 @@ void stmmac_disable_tx_queue(struct stmm
+ 	spin_unlock_irqrestore(&ch->lock, flags);
+ 
+ 	stmmac_stop_tx_dma(priv, queue);
+-	__free_dma_tx_desc_resources(priv, queue);
++	__free_dma_tx_desc_resources(priv, &priv->dma_conf, queue);
+ }
+ 
+ void stmmac_enable_tx_queue(struct stmmac_priv *priv, u32 queue)
+@@ -6441,21 +6557,21 @@ void stmmac_enable_tx_queue(struct stmma
+ 	unsigned long flags;
+ 	int ret;
+ 
+-	ret = __alloc_dma_tx_desc_resources(priv, queue);
++	ret = __alloc_dma_tx_desc_resources(priv, &priv->dma_conf, queue);
+ 	if (ret) {
+ 		netdev_err(priv->dev, "Failed to alloc TX desc.\n");
+ 		return;
+ 	}
+ 
+-	ret = __init_dma_tx_desc_rings(priv, queue);
++	ret = __init_dma_tx_desc_rings(priv,  &priv->dma_conf, queue);
+ 	if (ret) {
+-		__free_dma_tx_desc_resources(priv, queue);
++		__free_dma_tx_desc_resources(priv, &priv->dma_conf, queue);
+ 		netdev_err(priv->dev, "Failed to init TX desc.\n");
+ 		return;
+ 	}
+ 
+ 	stmmac_reset_tx_queue(priv, queue);
+-	stmmac_clear_tx_descriptors(priv, queue);
++	stmmac_clear_tx_descriptors(priv, &priv->dma_conf, queue);
+ 
+ 	stmmac_init_tx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+ 			    tx_q->dma_tx_phy, tx_q->queue_index);
+@@ -6492,7 +6608,7 @@ void stmmac_xdp_release(struct net_devic
+ 	stmmac_stop_all_dma(priv);
+ 
+ 	/* Release and free the Rx/Tx resources */
+-	free_dma_desc_resources(priv);
++	free_dma_desc_resources(priv, &priv->dma_conf);
+ 
+ 	/* Disable the MAC Rx/Tx */
+ 	stmmac_mac_set(priv, priv->ioaddr, false);
+@@ -6517,14 +6633,14 @@ int stmmac_xdp_open(struct net_device *d
+ 	u32 chan;
+ 	int ret;
+ 
+-	ret = alloc_dma_desc_resources(priv);
++	ret = alloc_dma_desc_resources(priv, &priv->dma_conf);
+ 	if (ret < 0) {
+ 		netdev_err(dev, "%s: DMA descriptors allocation failed\n",
+ 			   __func__);
+ 		goto dma_desc_error;
+ 	}
+ 
+-	ret = init_dma_desc_rings(dev, GFP_KERNEL);
++	ret = init_dma_desc_rings(dev, &priv->dma_conf, GFP_KERNEL);
+ 	if (ret < 0) {
+ 		netdev_err(dev, "%s: DMA descriptors initialization failed\n",
+ 			   __func__);
+@@ -6606,7 +6722,7 @@ irq_error:
+ 
+ 	stmmac_hw_teardown(dev);
+ init_error:
+-	free_dma_desc_resources(priv);
++	free_dma_desc_resources(priv, &priv->dma_conf);
+ dma_desc_error:
+ 	return ret;
+ }
+@@ -7475,7 +7591,7 @@ int stmmac_resume(struct device *dev)
+ 	stmmac_reset_queues_param(priv);
+ 
+ 	stmmac_free_tx_skbufs(priv);
+-	stmmac_clear_descriptors(priv);
++	stmmac_clear_descriptors(priv, &priv->dma_conf);
+ 
+ 	stmmac_hw_setup(ndev, false);
+ 	stmmac_init_coalesce(priv);
diff --git a/target/linux/generic/backport-5.15/775-v6.0-05-net-ethernet-stmicro-stmmac-permit-MTU-change-with-i.patch b/target/linux/generic/backport-5.15/775-v6.0-05-net-ethernet-stmicro-stmmac-permit-MTU-change-with-i.patch
new file mode 100644
index 0000000000..c5b332878e
--- /dev/null
+++ b/target/linux/generic/backport-5.15/775-v6.0-05-net-ethernet-stmicro-stmmac-permit-MTU-change-with-i.patch
@@ -0,0 +1,73 @@
+From 3470079687448abac42deb62774253be1d6bdef3 Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Sat, 23 Jul 2022 16:29:33 +0200
+Subject: [PATCH 5/5] net: ethernet: stmicro: stmmac: permit MTU change with
+ interface up
+
+Remove the limitation where the interface needs to be down to change
+MTU by releasing and opening the stmmac driver to set the new MTU.
+Also call the set_filter function to correctly init the port.
+This permits to remove the EBUSY error while the ethernet port is
+running permitting a correct MTU change if for example a DSA request
+a MTU change for a switch CPU port.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ .../net/ethernet/stmicro/stmmac/stmmac_main.c | 30 +++++++++++++++----
+ 1 file changed, 24 insertions(+), 6 deletions(-)
+
+--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
++++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+@@ -5597,18 +5597,15 @@ static int stmmac_change_mtu(struct net_
+ {
+ 	struct stmmac_priv *priv = netdev_priv(dev);
+ 	int txfifosz = priv->plat->tx_fifo_size;
++	struct stmmac_dma_conf *dma_conf;
+ 	const int mtu = new_mtu;
++	int ret;
+ 
+ 	if (txfifosz == 0)
+ 		txfifosz = priv->dma_cap.tx_fifo_size;
+ 
+ 	txfifosz /= priv->plat->tx_queues_to_use;
+ 
+-	if (netif_running(dev)) {
+-		netdev_err(priv->dev, "must be stopped to change its MTU\n");
+-		return -EBUSY;
+-	}
+-
+ 	if (stmmac_xdp_is_enabled(priv) && new_mtu > ETH_DATA_LEN) {
+ 		netdev_dbg(priv->dev, "Jumbo frames not supported for XDP\n");
+ 		return -EINVAL;
+@@ -5620,8 +5617,29 @@ static int stmmac_change_mtu(struct net_
+ 	if ((txfifosz < new_mtu) || (new_mtu > BUF_SIZE_16KiB))
+ 		return -EINVAL;
+ 
+-	dev->mtu = mtu;
++	if (netif_running(dev)) {
++		netdev_dbg(priv->dev, "restarting interface to change its MTU\n");
++		/* Try to allocate the new DMA conf with the new mtu */
++		dma_conf = stmmac_setup_dma_desc(priv, mtu);
++		if (IS_ERR(dma_conf)) {
++			netdev_err(priv->dev, "failed allocating new dma conf for new MTU %d\n",
++				   mtu);
++			return PTR_ERR(dma_conf);
++		}
++
++		stmmac_release(dev);
++
++		ret = __stmmac_open(dev, dma_conf);
++		kfree(dma_conf);
++		if (ret) {
++			netdev_err(priv->dev, "failed reopening the interface after MTU change\n");
++			return ret;
++		}
++
++		stmmac_set_rx_mode(dev);
++	}
+ 
++	dev->mtu = mtu;
+ 	netdev_update_features(dev);
+ 
+ 	return 0;