VisionFive2 Linux kernel

StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)

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author: Pawel Dembicki <paweldembicki@gmail.com> 2023-06-28 21:43:27 +0200 committer: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2023-07-19 16:36:44 +0200 commit: 82b3e8afba06362204137d1455d79732ad1f1dfc parent: 91a0632e73070928aafeb36b3cc676843c716931
Commit Summary:
net: dsa: vsc73xx: fix MTU configuration
Diffstat:
1 file changed, 3 insertions, 3 deletions
diff --git a/drivers/net/dsa/vitesse-vsc73xx-core.c b/drivers/net/dsa/vitesse-vsc73xx-core.c
index ae55167ce0a6..ef1a4a7c47b2 100644
--- a/drivers/net/dsa/vitesse-vsc73xx-core.c
+++ b/drivers/net/dsa/vitesse-vsc73xx-core.c
@@ -1025,17 +1025,17 @@ static int vsc73xx_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
 	struct vsc73xx *vsc = ds->priv;
 
 	return vsc73xx_write(vsc, VSC73XX_BLOCK_MAC, port,
-			     VSC73XX_MAXLEN, new_mtu);
+			     VSC73XX_MAXLEN, new_mtu + ETH_HLEN + ETH_FCS_LEN);
 }
 
 /* According to application not "VSC7398 Jumbo Frames" setting
- * up the MTU to 9.6 KB does not affect the performance on standard
+ * up the frame size to 9.6 KB does not affect the performance on standard
  * frames. It is clear from the application note that
  * "9.6 kilobytes" == 9600 bytes.
  */
 static int vsc73xx_get_max_mtu(struct dsa_switch *ds, int port)
 {
-	return 9600;
+	return 9600 - ETH_HLEN - ETH_FCS_LEN;
 }
 
 static const struct dsa_switch_ops vsc73xx_ds_ops = {