From: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Date: Mon, 9 Jul 2018 10:01:11 -0500
Subject: staging: fsl-dpaa2/eth: Remove Rx frame size check
Git-commit: 00fee00245e2f2d0ce9376ced63c0f20c406aa62
Patch-mainline: v4.19-rc1
References: fate#326530,fate#326531,fate#326535,fate#326538,fate#326539
Most Ethernet drivers don't enforce the MTU value as upper limit
for ingress frames. We too support receiving frames larger than
MTU, so allow that.
Remove our ndo_change_mtu implementation, letting the default
stack implementation handle things. Also, set the max frame length
allowed by hardware only once at probe time, with the largest
possible value.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 26 ++++++--------------------
1 file changed, 6 insertions(+), 20 deletions(-)
diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
index 24e069c574b0..4ae2371940bc 100644
--- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
+++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c
@@ -1243,25 +1243,6 @@ static void dpaa2_eth_get_stats(struct net_device *net_dev,
}
}
-static int dpaa2_eth_change_mtu(struct net_device *net_dev, int mtu)
-{
- struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
- int err;
-
- /* Set the maximum Rx frame length to match the transmit side;
- * account for L2 headers when computing the MFL
- */
- err = dpni_set_max_frame_length(priv->mc_io, 0, priv->mc_token,
- (u16)DPAA2_ETH_L2_MAX_FRM(mtu));
- if (err) {
- netdev_err(net_dev, "dpni_set_max_frame_length() failed\n");
- return err;
- }
-
- net_dev->mtu = mtu;
- return 0;
-}
-
/* Copy mac unicast addresses from @net_dev to @priv.
* Its sole purpose is to make dpaa2_eth_set_rx_mode() more readable.
*/
@@ -1469,7 +1450,6 @@ static const struct net_device_ops dpaa2_eth_ops = {
.ndo_init = dpaa2_eth_init,
.ndo_set_mac_address = dpaa2_eth_set_addr,
.ndo_get_stats64 = dpaa2_eth_get_stats,
- .ndo_change_mtu = dpaa2_eth_change_mtu,
.ndo_set_rx_mode = dpaa2_eth_set_rx_mode,
.ndo_set_features = dpaa2_eth_set_features,
.ndo_do_ioctl = dpaa2_eth_ioctl,
@@ -2385,6 +2365,12 @@ static int netdev_init(struct net_device *net_dev)
/* Set MTU upper limit; lower limit is 68B (default value) */
net_dev->max_mtu = DPAA2_ETH_MAX_MTU;
+ err = dpni_set_max_frame_length(priv->mc_io, 0, priv->mc_token,
+ (u16)DPAA2_ETH_MFL);
+ if (err) {
+ dev_err(dev, "dpni_set_max_frame_length() failed\n");
+ return err;
+ }
/* Set actual number of queues in the net device */
num_queues = dpaa2_eth_queue_count(priv);
--
2.11.0