diff mbox series

[net-next,04/12] net: usb: don't write directly to netdev->dev_addr

Message ID 20211020155617.1721694-5-kuba@kernel.org (mailing list archive)
State New, archived
Headers show
Series None | expand

Commit Message

Jakub Kicinski Oct. 20, 2021, 3:56 p.m. UTC
Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.

Manually fix all net/usb drivers without separate maintainers.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
CC: oneukum@suse.com
CC: linux-usb@vger.kernel.org
---
 drivers/net/usb/catc.c        | 9 ++++++---
 drivers/net/usb/ch9200.c      | 4 +++-
 drivers/net/usb/cx82310_eth.c | 5 +++--
 drivers/net/usb/kaweth.c      | 3 +--
 drivers/net/usb/mcs7830.c     | 4 +++-
 drivers/net/usb/sierra_net.c  | 6 ++++--
 drivers/net/usb/sr9700.c      | 4 +++-
 drivers/net/usb/sr9800.c      | 5 +++--
 drivers/net/usb/usbnet.c      | 6 ++++--
 9 files changed, 30 insertions(+), 16 deletions(-)

Comments

Oliver Neukum Oct. 21, 2021, 9:55 a.m. UTC | #1
On 20.10.21 17:56, Jakub Kicinski wrote:
> Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
> of VLANs...") introduced a rbtree for faster Ethernet address look
> up. To maintain netdev->dev_addr in this tree we need to make all
> the writes to it got through appropriate helpers.
>
> Manually fix all net/usb drivers without separate maintainers.
>
> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
> ---

Hi,


this looks good except for catc, which needs a more complicated fix.
Do you want me to do it and drop it from this patch?

    Regards
        Oliver

> --- a/drivers/net/usb/catc.c
> +++ b/drivers/net/usb/catc.c
> @@ -770,6 +770,7 @@ static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id
>  	struct net_device *netdev;
>  	struct catc *catc;
>  	u8 broadcast[ETH_ALEN];
> +	u8 addr[ETH_ALEN];
>  	int pktsz, ret;
>  
>  	if (usb_set_interface(usbdev,
> @@ -870,7 +871,8 @@ static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id
>  	  
>  		dev_dbg(dev, "Getting MAC from SEEROM.\n");
>  	  
> -		catc_get_mac(catc, netdev->dev_addr);
> +		catc_get_mac(catc, addr);
DMA on the stack.
> +		eth_hw_addr_set(netdev, addr);
>  		
>  		dev_dbg(dev, "Setting MAC into registers.\n");
>  	  
> @@ -899,8 +901,9 @@ static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id
>  	} else {
>  		dev_dbg(dev, "Performing reset\n");
>  		catc_reset(catc);
> -		catc_get_mac(catc, netdev->dev_addr);
> -		
> +		catc_get_mac(catc, addr);
DMA on the stack.
> +		eth_hw_addr_set(netdev, addr);
> +
>  		dev_dbg(dev, "Setting RX Mode\n");
>  		catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
>  		catc->rxmode[1] = 0;
>
>
Jakub Kicinski Oct. 21, 2021, 1:06 p.m. UTC | #2
On Thu, 21 Oct 2021 11:55:00 +0200 Oliver Neukum wrote:
> On 20.10.21 17:56, Jakub Kicinski wrote:
> > Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
> > of VLANs...") introduced a rbtree for faster Ethernet address look
> > up. To maintain netdev->dev_addr in this tree we need to make all
> > the writes to it got through appropriate helpers.
> >
> > Manually fix all net/usb drivers without separate maintainers.
> >
> > Signed-off-by: Jakub Kicinski <kuba@kernel.org>
> > ---  
> 
> this looks good except for catc, which needs a more complicated fix.
> Do you want me to do it and drop it from this patch?

Sure, thanks!
diff mbox series

Patch

diff --git a/drivers/net/usb/catc.c b/drivers/net/usb/catc.c
index 24db5768a3c0..89e04d2fe524 100644
--- a/drivers/net/usb/catc.c
+++ b/drivers/net/usb/catc.c
@@ -770,6 +770,7 @@  static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id
 	struct net_device *netdev;
 	struct catc *catc;
 	u8 broadcast[ETH_ALEN];
+	u8 addr[ETH_ALEN];
 	int pktsz, ret;
 
 	if (usb_set_interface(usbdev,
@@ -870,7 +871,8 @@  static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id
 	  
 		dev_dbg(dev, "Getting MAC from SEEROM.\n");
 	  
-		catc_get_mac(catc, netdev->dev_addr);
+		catc_get_mac(catc, addr);
+		eth_hw_addr_set(netdev, addr);
 		
 		dev_dbg(dev, "Setting MAC into registers.\n");
 	  
@@ -899,8 +901,9 @@  static int catc_probe(struct usb_interface *intf, const struct usb_device_id *id
 	} else {
 		dev_dbg(dev, "Performing reset\n");
 		catc_reset(catc);
-		catc_get_mac(catc, netdev->dev_addr);
-		
+		catc_get_mac(catc, addr);
+		eth_hw_addr_set(netdev, addr);
+
 		dev_dbg(dev, "Setting RX Mode\n");
 		catc->rxmode[0] = RxEnable | RxPolarity | RxMultiCast;
 		catc->rxmode[1] = 0;
diff --git a/drivers/net/usb/ch9200.c b/drivers/net/usb/ch9200.c
index d7f3b70d5477..f69d9b902da0 100644
--- a/drivers/net/usb/ch9200.c
+++ b/drivers/net/usb/ch9200.c
@@ -336,6 +336,7 @@  static int ch9200_bind(struct usbnet *dev, struct usb_interface *intf)
 {
 	int retval = 0;
 	unsigned char data[2];
+	u8 addr[ETH_ALEN];
 
 	retval = usbnet_get_endpoints(dev, intf);
 	if (retval)
@@ -383,7 +384,8 @@  static int ch9200_bind(struct usbnet *dev, struct usb_interface *intf)
 	retval = control_write(dev, REQUEST_WRITE, 0, MAC_REG_CTRL, data, 0x02,
 			       CONTROL_TIMEOUT_MS);
 
-	retval = get_mac_address(dev, dev->net->dev_addr);
+	retval = get_mac_address(dev, addr);
+	eth_hw_addr_set(dev->net, addr);
 
 	return retval;
 }
diff --git a/drivers/net/usb/cx82310_eth.c b/drivers/net/usb/cx82310_eth.c
index c4568a491dc4..79a47e2fd437 100644
--- a/drivers/net/usb/cx82310_eth.c
+++ b/drivers/net/usb/cx82310_eth.c
@@ -146,6 +146,7 @@  static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf)
 	u8 link[3];
 	int timeout = 50;
 	struct cx82310_priv *priv;
+	u8 addr[ETH_ALEN];
 
 	/* avoid ADSL modems - continue only if iProduct is "USB NET CARD" */
 	if (usb_string(udev, udev->descriptor.iProduct, buf, sizeof(buf)) > 0
@@ -202,12 +203,12 @@  static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf)
 		goto err;
 
 	/* get the MAC address */
-	ret = cx82310_cmd(dev, CMD_GET_MAC_ADDR, true, NULL, 0,
-			  dev->net->dev_addr, ETH_ALEN);
+	ret = cx82310_cmd(dev, CMD_GET_MAC_ADDR, true, NULL, 0, addr, ETH_ALEN);
 	if (ret) {
 		netdev_err(dev->net, "unable to read MAC address: %d\n", ret);
 		goto err;
 	}
+	eth_hw_addr_set(dev->net, addr);
 
 	/* start (does not seem to have any effect?) */
 	ret = cx82310_cmd(dev, CMD_START, false, NULL, 0, NULL, 0);
diff --git a/drivers/net/usb/kaweth.c b/drivers/net/usb/kaweth.c
index 144c686b4333..9b2bc1993ece 100644
--- a/drivers/net/usb/kaweth.c
+++ b/drivers/net/usb/kaweth.c
@@ -1044,8 +1044,7 @@  static int kaweth_probe(
 		goto err_all_but_rxbuf;
 
 	memcpy(netdev->broadcast, &bcast_addr, sizeof(bcast_addr));
-	memcpy(netdev->dev_addr, &kaweth->configuration.hw_addr,
-               sizeof(kaweth->configuration.hw_addr));
+	eth_hw_addr_set(netdev, (u8 *)&kaweth->configuration.hw_addr);
 
 	netdev->netdev_ops = &kaweth_netdev_ops;
 	netdev->watchdog_timeo = KAWETH_TX_TIMEOUT;
diff --git a/drivers/net/usb/mcs7830.c b/drivers/net/usb/mcs7830.c
index 5f42db26d200..326cc4e749d8 100644
--- a/drivers/net/usb/mcs7830.c
+++ b/drivers/net/usb/mcs7830.c
@@ -473,17 +473,19 @@  static const struct net_device_ops mcs7830_netdev_ops = {
 static int mcs7830_bind(struct usbnet *dev, struct usb_interface *udev)
 {
 	struct net_device *net = dev->net;
+	u8 addr[ETH_ALEN];
 	int ret;
 	int retry;
 
 	/* Initial startup: Gather MAC address setting from EEPROM */
 	ret = -EINVAL;
 	for (retry = 0; retry < 5 && ret; retry++)
-		ret = mcs7830_hif_get_mac_address(dev, net->dev_addr);
+		ret = mcs7830_hif_get_mac_address(dev, addr);
 	if (ret) {
 		dev_warn(&dev->udev->dev, "Cannot read MAC address\n");
 		goto out;
 	}
+	eth_hw_addr_set(net, addr);
 
 	mcs7830_data_set_multicast(net);
 
diff --git a/drivers/net/usb/sierra_net.c b/drivers/net/usb/sierra_net.c
index 55025202dc4f..bb4cbe8fc846 100644
--- a/drivers/net/usb/sierra_net.c
+++ b/drivers/net/usb/sierra_net.c
@@ -669,6 +669,7 @@  static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf)
 		0x00, 0x00, SIERRA_NET_HIP_MSYNC_ID, 0x00};
 	static const u8 shdwn_tmplate[sizeof(priv->shdwn_msg)] = {
 		0x00, 0x00, SIERRA_NET_HIP_SHUTD_ID, 0x00};
+	u8 mod[2];
 
 	dev_dbg(&dev->udev->dev, "%s", __func__);
 
@@ -698,8 +699,9 @@  static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf)
 	dev->net->netdev_ops = &sierra_net_device_ops;
 
 	/* change MAC addr to include, ifacenum, and to be unique */
-	dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return(&iface_counter);
-	dev->net->dev_addr[ETH_ALEN-1] = ifacenum;
+	mod[0] = atomic_inc_return(&iface_counter);
+	mod[1] = ifacenum;
+	dev_addr_mod(dev->net, ETH_ALEN - 2, mod, 2);
 
 	/* prepare shutdown message template */
 	memcpy(priv->shdwn_msg, shdwn_tmplate, sizeof(priv->shdwn_msg));
diff --git a/drivers/net/usb/sr9700.c b/drivers/net/usb/sr9700.c
index 15209de1849e..b658510cc9a4 100644
--- a/drivers/net/usb/sr9700.c
+++ b/drivers/net/usb/sr9700.c
@@ -320,6 +320,7 @@  static int sr9700_bind(struct usbnet *dev, struct usb_interface *intf)
 {
 	struct net_device *netdev;
 	struct mii_if_info *mii;
+	u8 addr[ETH_ALEN];
 	int ret;
 
 	ret = usbnet_get_endpoints(dev, intf);
@@ -350,11 +351,12 @@  static int sr9700_bind(struct usbnet *dev, struct usb_interface *intf)
 	 * EEPROM automatically to PAR. In case there is no EEPROM externally,
 	 * a default MAC address is stored in PAR for making chip work properly.
 	 */
-	if (sr_read(dev, SR_PAR, ETH_ALEN, netdev->dev_addr) < 0) {
+	if (sr_read(dev, SR_PAR, ETH_ALEN, addr) < 0) {
 		netdev_err(netdev, "Error reading MAC address\n");
 		ret = -ENODEV;
 		goto out;
 	}
+	eth_hw_addr_set(netdev, addr);
 
 	/* power up and reset phy */
 	sr_write_reg(dev, SR_PRR, PRR_PHY_RST);
diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c
index 838f4e9e8b58..f5e19f3ef6cd 100644
--- a/drivers/net/usb/sr9800.c
+++ b/drivers/net/usb/sr9800.c
@@ -731,6 +731,7 @@  static int sr9800_bind(struct usbnet *dev, struct usb_interface *intf)
 	struct sr_data *data = (struct sr_data *)&dev->data;
 	u16 led01_mux, led23_mux;
 	int ret, embd_phy;
+	u8 addr[ETH_ALEN];
 	u32 phyid;
 	u16 rx_ctl;
 
@@ -754,12 +755,12 @@  static int sr9800_bind(struct usbnet *dev, struct usb_interface *intf)
 	}
 
 	/* Get the MAC address */
-	ret = sr_read_cmd(dev, SR_CMD_READ_NODE_ID, 0, 0, ETH_ALEN,
-			  dev->net->dev_addr);
+	ret = sr_read_cmd(dev, SR_CMD_READ_NODE_ID, 0, 0, ETH_ALEN, addr);
 	if (ret < 0) {
 		netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);
 		return ret;
 	}
+	eth_hw_addr_set(dev->net, addr);
 	netdev_dbg(dev->net, "mac addr : %pM\n", dev->net->dev_addr);
 
 	/* Initialize MII structure */
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 840c1c2ab16a..1797ee5ad566 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -165,12 +165,13 @@  EXPORT_SYMBOL_GPL(usbnet_get_endpoints);
 
 int usbnet_get_ethernet_addr(struct usbnet *dev, int iMACAddress)
 {
+	u8		addr[ETH_ALEN];
 	int 		tmp = -1, ret;
 	unsigned char	buf [13];
 
 	ret = usb_string(dev->udev, iMACAddress, buf, sizeof buf);
 	if (ret == 12)
-		tmp = hex2bin(dev->net->dev_addr, buf, 6);
+		tmp = hex2bin(addr, buf, 6);
 	if (tmp < 0) {
 		dev_dbg(&dev->udev->dev,
 			"bad MAC string %d fetch, %d\n", iMACAddress, tmp);
@@ -178,6 +179,7 @@  int usbnet_get_ethernet_addr(struct usbnet *dev, int iMACAddress)
 			ret = -EINVAL;
 		return ret;
 	}
+	eth_hw_addr_set(dev->net, addr);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(usbnet_get_ethernet_addr);
@@ -1726,7 +1728,7 @@  usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 
 	dev->net = net;
 	strscpy(net->name, "usb%d", sizeof(net->name));
-	memcpy (net->dev_addr, node_id, sizeof node_id);
+	eth_hw_addr_set(net, node_id);
 
 	/* rx and tx sides can use different message sizes;
 	 * bind() should set rx_urb_size in that case.