From 109cc16526c6d5551f7735683f7985b2b0300bb5 Mon Sep 17 00:00:00 2001 From: Jarod Wilson Date: Mon, 17 Oct 2016 15:54:13 -0400 Subject: [PATCH] ethernet/cavium: use core min/max MTU checking liquidio: min_mtu 68, max_mtu 16000 thunder: min_mtu 64, max_mtu 9200 CC: netdev@vger.kernel.org CC: Sunil Goutham CC: Robert Richter CC: Derek Chickles CC: Satanand Burla CC: Felix Manlunas CC: Raghu Vatsavayi Signed-off-by: Jarod Wilson Signed-off-by: David S. Miller --- drivers/net/ethernet/cavium/liquidio/lio_main.c | 15 ++++----------- drivers/net/ethernet/cavium/liquidio/octeon_network.h | 2 +- drivers/net/ethernet/cavium/octeon/octeon_mgmt.c | 13 +++---------- drivers/net/ethernet/cavium/thunder/nicvf_main.c | 10 ++++------ 4 files changed, 12 insertions(+), 28 deletions(-) diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c index afc6f9d..71d01a7 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_main.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c @@ -2868,17 +2868,6 @@ static int liquidio_change_mtu(struct net_device *netdev, int new_mtu) struct octnic_ctrl_pkt nctrl; int ret = 0; - /* Limit the MTU to make sure the ethernet packets are between 68 bytes - * and 16000 bytes - */ - if ((new_mtu < LIO_MIN_MTU_SIZE) || - (new_mtu > LIO_MAX_MTU_SIZE)) { - dev_err(&oct->pci_dev->dev, "Invalid MTU: %d\n", new_mtu); - dev_err(&oct->pci_dev->dev, "Valid range %d and %d\n", - LIO_MIN_MTU_SIZE, LIO_MAX_MTU_SIZE); - return -EINVAL; - } - memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); nctrl.ncmd.u64 = 0; @@ -3891,6 +3880,10 @@ static int setup_nic_devices(struct octeon_device *octeon_dev) netdev->hw_features = netdev->hw_features & ~NETIF_F_HW_VLAN_CTAG_RX; + /* MTU range: 68 - 16000 */ + netdev->min_mtu = LIO_MIN_MTU_SIZE; + netdev->max_mtu = LIO_MAX_MTU_SIZE; + /* Point to the properties for octeon device to which this * interface belongs. */ diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_network.h b/drivers/net/ethernet/cavium/liquidio/octeon_network.h index e5d1deb..54b9665 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_network.h +++ b/drivers/net/ethernet/cavium/liquidio/octeon_network.h @@ -29,7 +29,7 @@ #include #define LIO_MAX_MTU_SIZE (OCTNET_MAX_FRM_SIZE - OCTNET_FRM_HEADER_SIZE) -#define LIO_MIN_MTU_SIZE 68 +#define LIO_MIN_MTU_SIZE ETH_MIN_MTU struct oct_nic_stats_resp { u64 rh; diff --git a/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c b/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c index 4ab404f..16e12c4 100644 --- a/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c +++ b/drivers/net/ethernet/cavium/octeon/octeon_mgmt.c @@ -645,16 +645,6 @@ static int octeon_mgmt_change_mtu(struct net_device *netdev, int new_mtu) struct octeon_mgmt *p = netdev_priv(netdev); int size_without_fcs = new_mtu + OCTEON_MGMT_RX_HEADROOM; - /* Limit the MTU to make sure the ethernet packets are between - * 64 bytes and 16383 bytes. - */ - if (size_without_fcs < 64 || size_without_fcs > 16383) { - dev_warn(p->dev, "MTU must be between %d and %d.\n", - 64 - OCTEON_MGMT_RX_HEADROOM, - 16383 - OCTEON_MGMT_RX_HEADROOM); - return -EINVAL; - } - netdev->mtu = new_mtu; cvmx_write_csr(p->agl + AGL_GMX_RX_FRM_MAX, size_without_fcs); @@ -1491,6 +1481,9 @@ static int octeon_mgmt_probe(struct platform_device *pdev) netdev->netdev_ops = &octeon_mgmt_ops; netdev->ethtool_ops = &octeon_mgmt_ethtool_ops; + netdev->min_mtu = 64 - OCTEON_MGMT_RX_HEADROOM; + netdev->max_mtu = 16383 - OCTEON_MGMT_RX_HEADROOM; + mac = of_get_mac_address(pdev->dev.of_node); if (mac) diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c index 45a13f7..b192712 100644 --- a/drivers/net/ethernet/cavium/thunder/nicvf_main.c +++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c @@ -1312,12 +1312,6 @@ static int nicvf_change_mtu(struct net_device *netdev, int new_mtu) { struct nicvf *nic = netdev_priv(netdev); - if (new_mtu > NIC_HW_MAX_FRS) - return -EINVAL; - - if (new_mtu < NIC_HW_MIN_FRS) - return -EINVAL; - if (nicvf_update_hw_max_frs(nic, new_mtu)) return -EINVAL; netdev->mtu = new_mtu; @@ -1630,6 +1624,10 @@ static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) netdev->netdev_ops = &nicvf_netdev_ops; netdev->watchdog_timeo = NICVF_TX_TIMEOUT; + /* MTU range: 64 - 9200 */ + netdev->min_mtu = NIC_HW_MIN_FRS; + netdev->max_mtu = NIC_HW_MAX_FRS; + INIT_WORK(&nic->reset_task, nicvf_reset_task); err = register_netdev(netdev); -- 2.7.4