target/linux/layerscape/patches-5.4/701-net-0301-staging-fsl_ppfe-eth-define-pfe-ndo_change_mtu-funct.patch

   1 From d9c44cf1a757823fb069dea0c15a830513175bf3 Mon Sep 17 00:00:00 2001
   2 From: Calvin Johnson <calvin.johnson@nxp.com>
   3 Date: Wed, 20 Jun 2018 10:23:01 +0530
   4 Subject: [PATCH] staging: fsl_ppfe/eth: define pfe ndo_change_mtu function
   5
   6 Define ndo_change_mtu function for pfe. This sets the max Rx frame
   7 length to the new mtu.
   8
   9 Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com>
  10 ---
  11  drivers/staging/fsl_ppfe/include/pfe/pfe.h |  1 +
  12  drivers/staging/fsl_ppfe/pfe_eth.c         | 12 ++++++++++++
  13  drivers/staging/fsl_ppfe/pfe_hal.c         | 11 +++++++++++
  14  3 files changed, 24 insertions(+)
  15
  16 --- a/drivers/staging/fsl_ppfe/include/pfe/pfe.h
  17 +++ b/drivers/staging/fsl_ppfe/include/pfe/pfe.h
  18 @@ -303,6 +303,7 @@ void gemac_allow_broadcast(void *base);
  19  void gemac_no_broadcast(void *base);
  20  void gemac_enable_1536_rx(void *base);
  21  void gemac_disable_1536_rx(void *base);
  22 +void gemac_set_rx_max_fl(void *base, int mtu);
  23  void gemac_enable_rx_jmb(void *base);
  24  void gemac_disable_rx_jmb(void *base);
  25  void gemac_enable_stacked_vlan(void *base);
  26 --- a/drivers/staging/fsl_ppfe/pfe_eth.c
  27 +++ b/drivers/staging/fsl_ppfe/pfe_eth.c
  28 @@ -1345,6 +1345,17 @@ static int pfe_eth_event_handler(void *d
  29         return 0;
  30  }
  31
  32 +static int pfe_eth_change_mtu(struct net_device *ndev, int new_mtu)
  33 +{
  34 +       struct pfe_eth_priv_s *priv = netdev_priv(ndev);
  35 +
  36 +       ndev->mtu = new_mtu;
  37 +       new_mtu += ETH_HLEN + ETH_FCS_LEN;
  38 +       gemac_set_rx_max_fl(priv->EMAC_baseaddr, new_mtu);
  39 +
  40 +       return 0;
  41 +}
  42 +
  43  /* pfe_eth_open
  44   */
  45  static int pfe_eth_open(struct net_device *ndev)
  46 @@ -2246,6 +2257,7 @@ static const struct net_device_ops pfe_n
  47         .ndo_set_rx_mode = pfe_eth_set_multi,
  48         .ndo_set_mac_address = pfe_eth_set_mac_address,
  49         .ndo_validate_addr = eth_validate_addr,
  50 +       .ndo_change_mtu = pfe_eth_change_mtu,
  51         .ndo_get_stats = pfe_eth_get_stats,
  52         .ndo_set_features = pfe_eth_set_features,
  53  };
  54 --- a/drivers/staging/fsl_ppfe/pfe_hal.c
  55 +++ b/drivers/staging/fsl_ppfe/pfe_hal.c
  56 @@ -1017,6 +1017,17 @@ void gemac_enable_1536_rx(void *base)
  57                 | (1536 << 16), base +  EMAC_RCNTRL_REG);
  58  }
  59
  60 +/* GEMAC set rx Max frame length.
  61 + * @param[in]  base    GEMAC base address
  62 + * @param[in]  mtu     new mtu
  63 + */
  64 +void gemac_set_rx_max_fl(void *base, int mtu)
  65 +{
  66 +       /* Set mtu as Maximum frame length */
  67 +       writel((readl(base + EMAC_RCNTRL_REG) & PFE_RCR_MAX_FL_MASK)
  68 +               | (mtu << 16), base + EMAC_RCNTRL_REG);
  69 +}
  70 +
  71  /* GEMAC enable jumbo function.
  72   * @param[in]  base    GEMAC base address
  73   */