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Date: Wed, 20 Jul 2022 17:28:15 -0700
From: justinpopo6@...il.com
To: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
pabeni@...hat.com, joalonsof@...il.com, jesionowskigreg@...il.com,
jackychou@...x.com.tw, jannh@...gle.com, linux-usb@...r.kernel.org,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: f.fainelli@...il.com, justin.chen@...adcom.com,
Justin Chen <justinpopo6@...il.com>
Subject: [PATCH v2 4/5] net: usb: ax88179_178a: move priv to driver_priv
From: Justin Chen <justinpopo6@...il.com>
We need more space to save WoL context. So lets allocate memory
for ax88179_data instead of using struct usbnet data field which
only supports 5 words. We continue to use the struct usbnet data
field for multicast filters. However since we no longer have the
private data stored there, we can shift it to the beginning.
Signed-off-by: Justin Chen <justinpopo6@...il.com>
---
drivers/net/usb/ax88179_178a.c | 32 +++++++++++++++++++-------------
1 file changed, 19 insertions(+), 13 deletions(-)
diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c
index 1cc388a..d0cd986 100644
--- a/drivers/net/usb/ax88179_178a.c
+++ b/drivers/net/usb/ax88179_178a.c
@@ -170,7 +170,6 @@ struct ax88179_data {
u8 eee_enabled;
u8 eee_active;
u16 rxctl;
- u16 reserved;
u8 in_pm;
};
@@ -190,14 +189,14 @@ static const struct {
static void ax88179_set_pm_mode(struct usbnet *dev, bool pm_mode)
{
- struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
+ struct ax88179_data *ax179_data = dev->driver_priv;
ax179_data->in_pm = pm_mode;
}
static int ax88179_in_pm(struct usbnet *dev)
{
- struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
+ struct ax88179_data *ax179_data = dev->driver_priv;
return ax179_data->in_pm;
}
@@ -693,7 +692,7 @@ ax88179_ethtool_set_eee(struct usbnet *dev, struct ethtool_eee *data)
static int ax88179_chk_eee(struct usbnet *dev)
{
struct ethtool_cmd ecmd = { .cmd = ETHTOOL_GSET };
- struct ax88179_data *priv = (struct ax88179_data *)dev->data;
+ struct ax88179_data *priv = dev->driver_priv;
mii_ethtool_gset(&dev->mii, &ecmd);
@@ -796,7 +795,7 @@ static void ax88179_enable_eee(struct usbnet *dev)
static int ax88179_get_eee(struct net_device *net, struct ethtool_eee *edata)
{
struct usbnet *dev = netdev_priv(net);
- struct ax88179_data *priv = (struct ax88179_data *)dev->data;
+ struct ax88179_data *priv = dev->driver_priv;
edata->eee_enabled = priv->eee_enabled;
edata->eee_active = priv->eee_active;
@@ -807,7 +806,7 @@ static int ax88179_get_eee(struct net_device *net, struct ethtool_eee *edata)
static int ax88179_set_eee(struct net_device *net, struct ethtool_eee *edata)
{
struct usbnet *dev = netdev_priv(net);
- struct ax88179_data *priv = (struct ax88179_data *)dev->data;
+ struct ax88179_data *priv = dev->driver_priv;
int ret;
priv->eee_enabled = edata->eee_enabled;
@@ -858,8 +857,8 @@ static const struct ethtool_ops ax88179_ethtool_ops = {
static void ax88179_set_multicast(struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
- struct ax88179_data *data = (struct ax88179_data *)dev->data;
- u8 *m_filter = ((u8 *)dev->data) + 12;
+ struct ax88179_data *data = dev->driver_priv;
+ u8 *m_filter = ((u8 *)dev->data);
data->rxctl = (AX_RX_CTL_START | AX_RX_CTL_AB | AX_RX_CTL_IPE);
@@ -871,7 +870,7 @@ static void ax88179_set_multicast(struct net_device *net)
} else if (netdev_mc_empty(net)) {
/* just broadcast and directed */
} else {
- /* We use the 20 byte dev->data for our 8 byte filter buffer
+ /* We use dev->data for our 8 byte filter buffer
* to avoid allocating memory that is tricky to free later
*/
u32 crc_bits;
@@ -1270,11 +1269,15 @@ static void ax88179_get_mac_addr(struct usbnet *dev)
static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
{
- struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
+ struct ax88179_data *ax179_data;
usbnet_get_endpoints(dev, intf);
- memset(ax179_data, 0, sizeof(*ax179_data));
+ ax179_data = kzalloc(sizeof(*ax179_data), GFP_KERNEL);
+ if (!ax179_data)
+ return -ENOMEM;
+
+ dev->driver_priv = ax179_data;
dev->net->netdev_ops = &ax88179_netdev_ops;
dev->net->ethtool_ops = &ax88179_ethtool_ops;
@@ -1304,6 +1307,7 @@ static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
static void ax88179_unbind(struct usbnet *dev, struct usb_interface *intf)
{
+ struct ax88179_data *ax179_data = dev->driver_priv;
u16 tmp16;
/* Configure RX control register => stop operation */
@@ -1316,6 +1320,8 @@ static void ax88179_unbind(struct usbnet *dev, struct usb_interface *intf)
/* Power down ethernet PHY */
tmp16 = 0;
ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16);
+
+ kfree(ax179_data);
}
static void
@@ -1492,7 +1498,7 @@ ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
static int ax88179_link_reset(struct usbnet *dev)
{
- struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
+ struct ax88179_data *ax179_data = dev->driver_priv;
u8 tmp[5], link_sts;
u16 mode, tmp16, delay = HZ / 10;
u32 tmp32 = 0x40000000;
@@ -1567,7 +1573,7 @@ static int ax88179_reset(struct usbnet *dev)
u8 buf[5];
u16 *tmp16;
u8 *tmp;
- struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
+ struct ax88179_data *ax179_data = dev->driver_priv;
struct ethtool_eee eee_data;
tmp16 = (u16 *)buf;
--
2.7.4
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