cdc53e2ec9
The total ethernet frame length should be written to the hardware register LTQ_ETOP_IGPLEN instead of just the value of the MTU. This patch fixes network issues on various Danube boards, especially when VLAN tagging is enabled. Signed-off-by: Matti Laakso <malaakso at elisanet.fi> SVN-Revision: 40541
22 lines
701 B
Diff
22 lines
701 B
Diff
--- a/drivers/net/ethernet/lantiq_etop.c
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+++ b/drivers/net/ethernet/lantiq_etop.c
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@@ -31,6 +31,7 @@
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#include <linux/mm.h>
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#include <linux/platform_device.h>
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#include <linux/ethtool.h>
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+#include <linux/if_vlan.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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@@ -764,8 +765,10 @@ ltq_etop_change_mtu(struct net_device *d
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struct ltq_etop_priv *priv = netdev_priv(dev);
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unsigned long flags;
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+ int max = ETH_HLEN + VLAN_HLEN + new_mtu + ETH_FCS_LEN;
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+
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spin_lock_irqsave(&priv->lock, flags);
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- ltq_etop_w32((ETOP_PLEN_UNDER << 16) | new_mtu,
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+ ltq_etop_w32((ETOP_PLEN_UNDER << 16) | max,
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LTQ_ETOP_IGPLEN);
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spin_unlock_irqrestore(&priv->lock, flags);
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}
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