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-rw-r--r--target/linux/brcm2708/patches-4.4/0158-smsx95xx-Add-option-to-disable-the-crimes-against-tr.patch44
1 files changed, 44 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0158-smsx95xx-Add-option-to-disable-the-crimes-against-tr.patch b/target/linux/brcm2708/patches-4.4/0158-smsx95xx-Add-option-to-disable-the-crimes-against-tr.patch
new file mode 100644
index 0000000000..9a9563e046
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0158-smsx95xx-Add-option-to-disable-the-crimes-against-tr.patch
@@ -0,0 +1,44 @@
+From 6c5578bc1a55f862aaac3ad6e1826a0de32f4734 Mon Sep 17 00:00:00 2001
+From: popcornmix <popcornmix@gmail.com>
+Date: Wed, 20 Jan 2016 17:50:09 +0000
+Subject: [PATCH 158/304] smsx95xx: Add option to disable the crimes against
+ truesize fix
+
+It may improve iperf numbers on Pi 1, but may generate dmesg warnings and possibly cause network issues
+See issue 1248.
+---
+ drivers/net/usb/smsc95xx.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+ mode change 100755 => 100644 drivers/net/usb/smsc95xx.c
+
+--- a/drivers/net/usb/smsc95xx.c
++++ b/drivers/net/usb/smsc95xx.c
+@@ -75,6 +75,10 @@ static bool turbo_mode = false;
+ module_param(turbo_mode, bool, 0644);
+ MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
+
++static bool truesize_mode = false;
++module_param(truesize_mode, bool, 0644);
++MODULE_PARM_DESC(truesize_mode, "Report larger truesize value");
++
+ static char *macaddr = ":";
+ module_param(macaddr, charp, 0);
+ MODULE_PARM_DESC(macaddr, "MAC address");
+@@ -1841,6 +1845,8 @@ static int smsc95xx_rx_fixup(struct usbn
+ if (dev->net->features & NETIF_F_RXCSUM)
+ smsc95xx_rx_csum_offload(skb);
+ skb_trim(skb, skb->len - 4); /* remove fcs */
++ if (truesize_mode)
++ skb->truesize = size + sizeof(struct sk_buff);
+
+ return 1;
+ }
+@@ -1858,6 +1864,8 @@ static int smsc95xx_rx_fixup(struct usbn
+ if (dev->net->features & NETIF_F_RXCSUM)
+ smsc95xx_rx_csum_offload(ax_skb);
+ skb_trim(ax_skb, ax_skb->len - 4); /* remove fcs */
++ if (truesize_mode)
++ ax_skb->truesize = size + sizeof(struct sk_buff);
+
+ usbnet_skb_return(dev, ax_skb);
+ }