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36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
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From 3e65efcca87a9bb5f3b864e0a43d167bc0a8688c Mon Sep 17 00:00:00 2001
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From: Foster Snowhill <forst@pen.gy>
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Date: Wed, 7 Jun 2023 15:57:00 +0200
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Subject: [PATCH 2/4] usbnet: ipheth: transmit URBs without trailing padding
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The behaviour of the official iOS tethering driver on macOS is to not
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transmit any trailing padding at the end of URBs. This is applicable
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to both NCM and legacy modes, including older devices.
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Adapt the driver to not include trailing padding in TX URBs, matching
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the behaviour of the official macOS driver.
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Signed-off-by: Foster Snowhill <forst@pen.gy>
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Tested-by: Georgi Valkov <gvalkov@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/usb/ipheth.c | 4 +---
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1 file changed, 1 insertion(+), 3 deletions(-)
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--- a/drivers/net/usb/ipheth.c
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+++ b/drivers/net/usb/ipheth.c
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@@ -373,12 +373,10 @@ static netdev_tx_t ipheth_tx(struct sk_b
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}
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memcpy(dev->tx_buf, skb->data, skb->len);
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- if (skb->len < IPHETH_BUF_SIZE)
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- memset(dev->tx_buf + skb->len, 0, IPHETH_BUF_SIZE - skb->len);
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usb_fill_bulk_urb(dev->tx_urb, udev,
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usb_sndbulkpipe(udev, dev->bulk_out),
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- dev->tx_buf, IPHETH_BUF_SIZE,
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+ dev->tx_buf, skb->len,
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ipheth_sndbulk_callback,
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dev);
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dev->tx_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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