[TG3]: disallow jumbo TSO on 5780
Disallow jumbo TSO on 5780 due to hardware restrictions.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 2b7d99f..04d8b18 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -3443,10 +3443,18 @@
{
dev->mtu = new_mtu;
- if (new_mtu > ETH_DATA_LEN)
- tp->tg3_flags |= TG3_FLAG_JUMBO_RING_ENABLE;
- else
+ if (new_mtu > ETH_DATA_LEN) {
+ if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) {
+ tp->tg3_flags2 &= ~TG3_FLG2_TSO_CAPABLE;
+ ethtool_op_set_tso(dev, 0);
+ }
+ else
+ tp->tg3_flags |= TG3_FLAG_JUMBO_RING_ENABLE;
+ } else {
+ if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780)
+ tp->tg3_flags2 |= TG3_FLG2_TSO_CAPABLE;
tp->tg3_flags &= ~TG3_FLAG_JUMBO_RING_ENABLE;
+ }
}
static int tg3_change_mtu(struct net_device *dev, int new_mtu)