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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>
This commit is contained in:
Dmitry Bezrukov 2018-11-26 09:33:23 +00:00 committed by David S. Miller
parent 0203146646
commit a4017cc264
1 changed files with 59 additions and 1 deletions
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60
drivers/net/usb/aqc111.c
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@ -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, &reg16);
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, &reg16);
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, &reg16);
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, &reg16);
@ -507,6 +562,9 @@ static int aqc111_link_reset(struct usbnet *dev)
aqc111_read16_cmd(dev, AQ_ACCESS_MAC, SFR_MEDIUM_STATUS_MODE,
2, &reg16);
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,