diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0182-staging-dpaa2-evb-Update-MTU-update-procedure.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0182-staging-dpaa2-evb-Update-MTU-update-procedure.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0182-staging-dpaa2-evb-Update-MTU-update-procedure.patch b/target/linux/layerscape/patches-5.4/701-net-0182-staging-dpaa2-evb-Update-MTU-update-procedure.patch new file mode 100644 index 0000000000..a3c87ead19 --- /dev/null +++ b/target/linux/layerscape/patches-5.4/701-net-0182-staging-dpaa2-evb-Update-MTU-update-procedure.patch @@ -0,0 +1,57 @@ +From e9c0434a55a0ddf28b1e7868890eb7557b2c28f9 Mon Sep 17 00:00:00 2001 +From: Razvan Stefanescu <razvan.stefanescu@nxp.com> +Date: Thu, 17 Aug 2017 19:47:22 +0300 +Subject: [PATCH] staging: dpaa2-evb: Update MTU update procedure + +Set limits on the MTU to accommodate netdevice update. There is no need to +check the limits before setting the new value. + +Signed-off-by: Razvan Stefanescu <razvan.stefanescu@nxp.com> +--- + drivers/staging/fsl-dpaa2/evb/evb.c | 18 ++++++++---------- + 1 file changed, 8 insertions(+), 10 deletions(-) + +--- a/drivers/staging/fsl-dpaa2/evb/evb.c ++++ b/drivers/staging/fsl-dpaa2/evb/evb.c +@@ -53,9 +53,9 @@ static const char evb_drv_version[] = "0 + #define DPDMUX_MAX_IRQ_NUM 2 + + /* MAX FRAME LENGTH (currently 10k) */ +-#define EVB_MAX_FRAME_LENGTH (10 * 1024) +-/* MIN FRAME LENGTH (64 bytes + 4 bytes CRC) */ +-#define EVB_MIN_FRAME_LENGTH 68 ++#define EVB_MAX_FRAME_LENGTH (10 * 1024) ++#define EVB_MAX_MTU (EVB_MAX_FRAME_LENGTH - VLAN_ETH_HLEN) ++#define EVB_MIN_MTU 68 + + struct evb_port_priv { + struct net_device *netdev; +@@ -457,16 +457,10 @@ static int evb_change_mtu(struct net_dev + if (port_priv->port_index > 0) + return -EPERM; + +- if (mtu < EVB_MIN_FRAME_LENGTH || mtu > EVB_MAX_FRAME_LENGTH) { +- netdev_err(netdev, "Invalid MTU %d. Valid range is: %d..%d\n", +- mtu, EVB_MIN_FRAME_LENGTH, EVB_MAX_FRAME_LENGTH); +- return -EINVAL; +- } +- + err = dpdmux_set_max_frame_length(evb_priv->mc_io, + 0, + evb_priv->mux_handle, +- (uint16_t)mtu); ++ (uint16_t)(mtu + VLAN_ETH_HLEN)); + + if (unlikely(err)) { + netdev_err(netdev, "dpdmux_ul_set_max_frame_length err %d\n", +@@ -1291,6 +1285,10 @@ static int evb_probe(struct fsl_mc_devic + + list_add(&port_priv->list, &priv->port_list); + } else { ++ /* Set MTU limits only on uplink */ ++ port_netdev->min_mtu = EVB_MIN_MTU; ++ port_netdev->max_mtu = EVB_MAX_MTU; ++ + err = register_netdev(netdev); + + if (err < 0) { |