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sunvnet: fix rx packet length check to allow for TSO
This patch fixes the rx packet length check in the sunvnet driver to allow for a TSO max packet length greater than the LDC channel negotiated MTU. These are negotiated separately and there is no requirement that port->tsolen be less than port->rmtu, but if it isn't, it'll drop packets with rx length errors. Signed-off-by: David L Stevens <david.stevens@oracle.com> Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 6 additions and 1 deletions
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@ -351,10 +351,15 @@ static int vnet_rx_one(struct vnet_port *port, struct vio_net_desc *desc)
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unsigned int len = desc->size;
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unsigned int copy_len;
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struct sk_buff *skb;
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int maxlen;
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int err;
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err = -EMSGSIZE;
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if (unlikely(len < ETH_ZLEN || len > port->rmtu)) {
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if (port->tso && port->tsolen > port->rmtu)
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maxlen = port->tsolen;
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else
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maxlen = port->rmtu;
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if (unlikely(len < ETH_ZLEN || len > maxlen)) {
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dev->stats.rx_length_errors++;
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goto out_dropped;
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}
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