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> --- Index: trunk/target/linux/lantiq/patches-3.10/0207-NET-fix-etop-igplen.patch =================================================================== --- trunk/target/linux/lantiq/patches-3.10/0207-NET-fix-etop-igplen.patch (revision 0) +++ trunk/target/linux/lantiq/patches-3.10/0207-NET-fix-etop-igplen.patch (working copy) @@ -0,0 +1,22 @@ +--- a/drivers/net/ethernet/lantiq_etop.c ++++ b/drivers/net/ethernet/lantiq_etop.c +@@ -31,6 +31,7 @@ + #include <linux/mm.h> + #include <linux/platform_device.h> + #include <linux/ethtool.h> ++#include <linux/if_vlan.h> + #include <linux/init.h> + #include <linux/delay.h> + #include <linux/io.h> +@@ -764,8 +765,10 @@ ltq_etop_change_mtu(struct net_device *d + struct ltq_etop_priv *priv = netdev_priv(dev); + unsigned long flags; + ++ int max = ETH_HLEN + VLAN_HLEN + new_mtu + ETH_FCS_LEN; ++ + spin_lock_irqsave(&priv->lock, flags); +- ltq_etop_w32((ETOP_PLEN_UNDER << 16) | new_mtu, ++ ltq_etop_w32((ETOP_PLEN_UNDER << 16) | max, + LTQ_ETOP_IGPLEN); + spin_unlock_irqrestore(&priv->lock, flags); + } _______________________________________________ openwrt-devel mailing list [email protected] https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel
