netdev - [PATCH net-next 3/5] gve: Remove obsolete checks that rely on page size.

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Message-ID: <20231128002648.320892-4-jfraker@google.com>
Date: Mon, 27 Nov 2023 16:26:46 -0800
From: John Fraker <jfraker@...gle.com>
To: netdev@...r.kernel.org
Cc: John Fraker <jfraker@...gle.com>, Jordan Kimbrough <jrkim@...gle.com>, 
	Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH net-next 3/5] gve: Remove obsolete checks that rely on page size.

These checks are safe to remove as they are no longer enforced by the
backend. Retaining them would require updating them to work differently
with page sizes larger than 4k.

Signed-off-by: Jordan Kimbrough <jrkim@...gle.com>
Signed-off-by: John Fraker <jfraker@...gle.com>
Reviewed-by: Willem de Bruijn <willemb@...gle.com>
---
 drivers/net/ethernet/google/gve/gve_adminq.c | 11 -----------
 drivers/net/ethernet/google/gve/gve_rx.c     |  8 +-------
 2 files changed, 1 insertion(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/google/gve/gve_adminq.c b/drivers/net/ethernet/google/gve/gve_adminq.c
index f81ed6f62..bebb7ed11 100644
--- a/drivers/net/ethernet/google/gve/gve_adminq.c
+++ b/drivers/net/ethernet/google/gve/gve_adminq.c
@@ -727,18 +727,7 @@ static int gve_set_desc_cnt(struct gve_priv *priv,
 			    struct gve_device_descriptor *descriptor)
 {
 	priv->tx_desc_cnt = be16_to_cpu(descriptor->tx_queue_entries);
-	if (priv->tx_desc_cnt * sizeof(priv->tx->desc[0]) < PAGE_SIZE) {
-		dev_err(&priv->pdev->dev, "Tx desc count %d too low\n",
-			priv->tx_desc_cnt);
-		return -EINVAL;
-	}
 	priv->rx_desc_cnt = be16_to_cpu(descriptor->rx_queue_entries);
-	if (priv->rx_desc_cnt * sizeof(priv->rx->desc.desc_ring[0])
-	    < PAGE_SIZE) {
-		dev_err(&priv->pdev->dev, "Rx desc count %d too low\n",
-			priv->rx_desc_cnt);
-		return -EINVAL;
-	}
 	return 0;
 }
 
diff --git a/drivers/net/ethernet/google/gve/gve_rx.c b/drivers/net/ethernet/google/gve/gve_rx.c
index 3c8a80d18..3d6b26ac6 100644
--- a/drivers/net/ethernet/google/gve/gve_rx.c
+++ b/drivers/net/ethernet/google/gve/gve_rx.c
@@ -210,9 +210,9 @@ static int gve_rx_alloc_ring(struct gve_priv *priv, int idx)
 {
 	struct gve_rx_ring *rx = &priv->rx[idx];
 	struct device *hdev = &priv->pdev->dev;
-	u32 slots, npages;
 	int filled_pages;
 	size_t bytes;
+	u32 slots;
 	int err;
 
 	netif_dbg(priv, drv, priv->dev, "allocating rx ring\n");
@@ -269,12 +269,6 @@ static int gve_rx_alloc_ring(struct gve_priv *priv, int idx)
 
 	/* alloc rx desc ring */
 	bytes = sizeof(struct gve_rx_desc) * priv->rx_desc_cnt;
-	npages = bytes / PAGE_SIZE;
-	if (npages * PAGE_SIZE != bytes) {
-		err = -EIO;
-		goto abort_with_q_resources;
-	}
-
 	rx->desc.desc_ring = dma_alloc_coherent(hdev, bytes, &rx->desc.bus,
 						GFP_KERNEL);
 	if (!rx->desc.desc_ring) {
-- 
2.43.0.rc1.413.gea7ed67945-goog