myri10ge: allow LRO to be enabled via ethtool

Allow myri10ge LRO to be enabled/disabled via ethtool
(and by the stack for packet forwarding).

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 4 deletions

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index 140794a8d56a..dfd0994212e1 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -1300,7 +1300,7 @@ myri10ge_rx_done(struct myri10ge_slice_state *ss, struct myri10ge_rx_buf *rx,
                 remainder -= MYRI10GE_ALLOC_SIZE;
         }
 
-        if (mgp->csum_flag && myri10ge_lro) {
+        if (dev->features & NETIF_F_LRO) {
                 rx_frags[0].page_offset += MXGEFW_PAD;
                 rx_frags[0].size -= MXGEFW_PAD;
                 len -= MXGEFW_PAD;
@@ -1716,12 +1716,17 @@ static u32 myri10ge_get_rx_csum(struct net_device *netdev)
 static int myri10ge_set_rx_csum(struct net_device *netdev, u32 csum_enabled)
 {
         struct myri10ge_priv *mgp = netdev_priv(netdev);
+        int err = 0;
 
         if (csum_enabled)
                 mgp->csum_flag = MXGEFW_FLAGS_CKSUM;
-        else
+        else {
+                u32 flags = ethtool_op_get_flags(netdev);
+                err = ethtool_op_set_flags(netdev, (flags & ~ETH_FLAG_LRO));
                 mgp->csum_flag = 0;
-        return 0;
+
+        }
+        return err;
 }
 
 static int myri10ge_set_tso(struct net_device *netdev, u32 tso_enabled)
@@ -1904,7 +1909,9 @@ static const struct ethtool_ops myri10ge_ethtool_ops = {
         .get_sset_count = myri10ge_get_sset_count,
         .get_ethtool_stats = myri10ge_get_ethtool_stats,
         .set_msglevel = myri10ge_set_msglevel,
-        .get_msglevel = myri10ge_get_msglevel
+        .get_msglevel = myri10ge_get_msglevel,
+        .get_flags = ethtool_op_get_flags,
+        .set_flags = ethtool_op_set_flags
 };
 
 static int myri10ge_allocate_rings(struct myri10ge_slice_state *ss)
@@ -3910,6 +3917,8 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
         if (dac_enabled)
                 netdev->features |= NETIF_F_HIGHDMA;
+        if (myri10ge_lro)
+                netdev->features |= NETIF_F_LRO;
 
         /* make sure we can get an irq, and that MSI can be
          * setup (if available).  Also ensure netdev->irq