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From: Arnd Bergmann <arnd@kernel.org>
To: netdev@vger.kernel.org
Cc: Christoph Hellwig <hch@lst.de>, Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH net-next v2 10/31] hamachi: use ndo_siocdevprivate
Date: Tue, 20 Jul 2021 16:46:17 +0200	[thread overview]
Message-ID: <20210720144638.2859828-11-arnd@kernel.org> (raw)
In-Reply-To: <20210720144638.2859828-1-arnd@kernel.org>

From: Arnd Bergmann <arnd@arndb.de>

hamachi has one command that overloads the ifreq argument
and requires a conversion to ndo_siocdevprivate in order to
make compat mode work, so split it from ndo_ioctl.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/net/ethernet/packetengines/hamachi.c | 63 ++++++++++++--------
 1 file changed, 38 insertions(+), 25 deletions(-)

diff --git a/drivers/net/ethernet/packetengines/hamachi.c b/drivers/net/ethernet/packetengines/hamachi.c
index d058a63602a9..94823c5f7dff 100644
--- a/drivers/net/ethernet/packetengines/hamachi.c
+++ b/drivers/net/ethernet/packetengines/hamachi.c
@@ -546,7 +546,9 @@ static int read_eeprom(void __iomem *ioaddr, int location);
 static int mdio_read(struct net_device *dev, int phy_id, int location);
 static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
 static int hamachi_open(struct net_device *dev);
-static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static int hamachi_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+static int hamachi_siocdevprivate(struct net_device *dev, struct ifreq *rq,
+				  void __user *data, int cmd);
 static void hamachi_timer(struct timer_list *t);
 static void hamachi_tx_timeout(struct net_device *dev, unsigned int txqueue);
 static void hamachi_init_ring(struct net_device *dev);
@@ -571,7 +573,8 @@ static const struct net_device_ops hamachi_netdev_ops = {
 	.ndo_validate_addr	= eth_validate_addr,
 	.ndo_set_mac_address 	= eth_mac_addr,
 	.ndo_tx_timeout		= hamachi_tx_timeout,
-	.ndo_do_ioctl		= netdev_ioctl,
+	.ndo_do_ioctl		= hamachi_ioctl,
+	.ndo_siocdevprivate	= hamachi_siocdevprivate,
 };
 
 
@@ -1867,7 +1870,36 @@ static const struct ethtool_ops ethtool_ops_no_mii = {
 	.get_drvinfo = hamachi_get_drvinfo,
 };
 
-static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+/* private ioctl: set rx,tx intr params */
+static int hamachi_siocdevprivate(struct net_device *dev, struct ifreq *rq,
+				  void __user *data, int cmd)
+{
+	struct hamachi_private *np = netdev_priv(dev);
+	u32 *d = (u32 *)&rq->ifr_ifru;
+
+	if (!netif_running(dev))
+		return -EINVAL;
+
+	if (cmd != SIOCDEVPRIVATE + 3)
+		return -EOPNOTSUPP;
+
+	/* Should add this check here or an ordinary user can do nasty
+	 * things. -KDU
+	 *
+	 * TODO: Shut down the Rx and Tx engines while doing this.
+	 */
+	if (!capable(CAP_NET_ADMIN))
+		return -EPERM;
+	writel(d[0], np->base + TxIntrCtrl);
+	writel(d[1], np->base + RxIntrCtrl);
+	printk(KERN_NOTICE "%s: tx %08x, rx %08x intr\n", dev->name,
+	       (u32)readl(np->base + TxIntrCtrl),
+	       (u32)readl(np->base + RxIntrCtrl));
+
+	return 0;
+}
+
+static int hamachi_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 {
 	struct hamachi_private *np = netdev_priv(dev);
 	struct mii_ioctl_data *data = if_mii(rq);
@@ -1876,28 +1908,9 @@ static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	if (!netif_running(dev))
 		return -EINVAL;
 
-	if (cmd == (SIOCDEVPRIVATE+3)) { /* set rx,tx intr params */
-		u32 *d = (u32 *)&rq->ifr_ifru;
-		/* Should add this check here or an ordinary user can do nasty
-		 * things. -KDU
-		 *
-		 * TODO: Shut down the Rx and Tx engines while doing this.
-		 */
-		if (!capable(CAP_NET_ADMIN))
-			return -EPERM;
-		writel(d[0], np->base + TxIntrCtrl);
-		writel(d[1], np->base + RxIntrCtrl);
-		printk(KERN_NOTICE "%s: tx %08x, rx %08x intr\n", dev->name,
-		  (u32) readl(np->base + TxIntrCtrl),
-		  (u32) readl(np->base + RxIntrCtrl));
-		rc = 0;
-	}
-
-	else {
-		spin_lock_irq(&np->lock);
-		rc = generic_mii_ioctl(&np->mii_if, data, cmd, NULL);
-		spin_unlock_irq(&np->lock);
-	}
+	spin_lock_irq(&np->lock);
+	rc = generic_mii_ioctl(&np->mii_if, data, cmd, NULL);
+	spin_unlock_irq(&np->lock);
 
 	return rc;
 }
-- 
2.29.2


  parent reply	other threads:[~2021-07-20 15:39 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-20 14:46 [PATCH net-next v2 00/31] ndo_ioctl rework Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 01/31] net: split out SIOCDEVPRIVATE handling from dev_ioctl Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 02/31] staging: rtlwifi: use siocdevprivate Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 03/31] staging: wlan-ng: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 04/31] hostap: use ndo_siocdevprivate Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 05/31] bridge: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 06/31] phonet: use siocdevprivate Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 07/31] tulip: use ndo_siocdevprivate Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 08/31] bonding: use siocdevprivate Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 09/31] appletalk: use ndo_siocdevprivate Arnd Bergmann
2021-07-20 14:46 ` Arnd Bergmann [this message]
2021-07-20 14:46 ` [PATCH net-next v2 11/31] tehuti: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 12/31] eql: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 13/31] fddi: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 14/31] net: usb: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 15/31] slip/plip: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 16/31] qeth: " Arnd Bergmann
2021-07-21  6:05   ` Julian Wiedmann
2021-07-21  8:49     ` Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 17/31] cxgb3: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 18/31] hamradio: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 19/31] airo: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 20/31] ip_tunnel: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 21/31] hippi: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 22/31] sb1000: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 23/31] ppp: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 24/31] wan: " Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 25/31] wan: cosa: remove dead cosa_net_ioctl() function Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 26/31] dev_ioctl: pass SIOCDEVPRIVATE data separately Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 27/31] dev_ioctl: split out ndo_eth_ioctl Arnd Bergmann
2021-07-21 16:21   ` Shannon Nelson
2021-07-20 14:46 ` [PATCH net-next v2 28/31] net: split out ndo_siowandev ioctl Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 29/31] net: socket: return changed ifreq from SIOCDEVPRIVATE Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 30/31] net: bridge: move bridge ioctls out of .ndo_do_ioctl Arnd Bergmann
2021-07-20 14:46 ` [PATCH net-next v2 31/31] net: bonding: move ioctl handling to private ndo operation Arnd Bergmann
2021-07-20 19:08 ` [PATCH net-next v2 00/31] ndo_ioctl rework David Miller
2021-07-22 15:02   ` Arnd Bergmann

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