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>
diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c
index d2835bf..b5a1d3d 100644
--- a/drivers/net/ethernet/sun/sunvnet.c
+++ b/drivers/net/ethernet/sun/sunvnet.c
@@ -351,10 +351,15 @@
unsigned int len = desc->size;
unsigned int copy_len;
struct sk_buff *skb;
+ int maxlen;
int err;
err = -EMSGSIZE;
- if (unlikely(len < ETH_ZLEN || len > port->rmtu)) {
+ if (port->tso && port->tsolen > port->rmtu)
+ maxlen = port->tsolen;
+ else
+ maxlen = port->rmtu;
+ if (unlikely(len < ETH_ZLEN || len > maxlen)) {
dev->stats.rx_length_errors++;
goto out_dropped;
}