diff options
| author |   Dmitry Bezrukov <dmitry.bezrukov@aquantia.com> | 2018-11-26 09:33:23 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-11-27 15:46:07 -0800 |
| commit | a4017cc264c66b368218ece00f1b8a1a1de31731 (patch) | |
| tree | 8d3f720653c99d6f5a599928d371a5597aa6486c /drivers/net/usb | |
| parent | net: usb: aqc111: Add checksum offload support (diff) | |
| download | linux-dev-a4017cc264c66b368218ece00f1b8a1a1de31731.tar.xz linux-dev-a4017cc264c66b368218ece00f1b8a1a1de31731.zip | |
net: usb: aqc111: Add support for changing MTU
Signed-off-by: Dmitry Bezrukov <dmitry.bezrukov@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb')
| -rw-r--r-- | drivers/net/usb/aqc111.c | 60 |
1 files changed, 59 insertions, 1 deletions
diff --git a/drivers/net/usb/aqc111.c b/drivers/net/usb/aqc111.c index 1c8812e082bf..641e68ee017a 100644 --- a/drivers/net/usb/aqc111.c +++ b/drivers/net/usb/aqc111.c @@ -205,6 +205,48 @@ static void aqc111_set_phy_speed(struct usbnet *dev, u8 autoneg, u16 speed) aqc111_write32_cmd(dev, AQ_PHY_OPS, 0, 0, &aqc111_data->phy_cfg); } +static int aqc111_change_mtu(struct net_device *net, int new_mtu) +{ + struct usbnet *dev = netdev_priv(net); + u16 reg16 = 0; + u8 buf[5]; + + net->mtu = new_mtu; + dev->hard_mtu = net->mtu + net->hard_header_len; + + aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, + 2, ®16); + if (net->mtu > 1500) + reg16 |= SFR_MEDIUM_JUMBO_EN; + else + reg16 &= ~SFR_MEDIUM_JUMBO_EN; + + aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, + 2, ®16); + + if (dev->net->mtu > 12500 && dev->net->mtu <= 16334) { + memcpy(buf, &AQC111_BULKIN_SIZE[2], 5); + /* RX bulk configuration */ + aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL, + 5, 5, buf); + } + + /* Set high low water level */ + if (dev->net->mtu <= 4500) + reg16 = 0x0810; + else if (dev->net->mtu <= 9500) + reg16 = 0x1020; + else if (dev->net->mtu <= 12500) + reg16 = 0x1420; + else if (dev->net->mtu <= 16334) + reg16 = 0x1A20; + + aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_PAUSE_WATERLVL_LOW, + 2, ®16); + + return 0; +} + static int aqc111_set_mac_addr(struct net_device *net, void *p) { struct usbnet *dev = netdev_priv(net); @@ -225,6 +267,7 @@ static const struct net_device_ops aqc111_netdev_ops = { .ndo_start_xmit = usbnet_start_xmit, .ndo_tx_timeout = usbnet_tx_timeout, .ndo_get_stats64 = usbnet_get_stats64, + .ndo_change_mtu = aqc111_change_mtu, .ndo_set_mac_address = aqc111_set_mac_addr, .ndo_validate_addr = eth_validate_addr, }; @@ -301,6 +344,8 @@ static int aqc111_bind(struct usbnet *dev, struct usb_interface *intf) dev->net->needed_headroom += sizeof(u64); dev->net->needed_tailroom += sizeof(u64); + dev->net->max_mtu = 16334; + dev->net->netdev_ops = &aqc111_netdev_ops; if (usb_device_no_sg_constraint(dev->udev)) @@ -427,12 +472,22 @@ static void aqc111_configure_rx(struct usbnet *dev, break; } + if (dev->net->mtu > 12500 && dev->net->mtu <= 16334) + queue_num = 2; /* For Jumbo packet 16KB */ + memcpy(buf, &AQC111_BULKIN_SIZE[queue_num], 5); /* RX bulk configuration */ aqc111_write_cmd(dev, AQ_ACCESS_MAC, SFR_RX_BULKIN_QCTRL, 5, 5, buf); /* Set high low water level */ - reg16 = 0x0810; + if (dev->net->mtu <= 4500) + reg16 = 0x0810; + else if (dev->net->mtu <= 9500) + reg16 = 0x1020; + else if (dev->net->mtu <= 12500) + reg16 = 0x1420; + else if (dev->net->mtu <= 16334) + reg16 = 0x1A20; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_PAUSE_WATERLVL_LOW, 2, ®16); @@ -507,6 +562,9 @@ static int aqc111_link_reset(struct usbnet *dev) aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, 2, ®16); + if (dev->net->mtu > 1500) + reg16 |= SFR_MEDIUM_JUMBO_EN; + reg16 |= SFR_MEDIUM_RECEIVE_EN | SFR_MEDIUM_RXFLOW_CTRLEN | SFR_MEDIUM_TXFLOW_CTRLEN; aqc111_write16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE, |