From: Arnd Bergmann <arnd@kernel.org>
To: netdev@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>,
linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org,
bridge@lists.linux-foundation.org, linux-hams@vger.kernel.org,
Jakub Kicinski <kuba@kernel.org>, Christoph Hellwig <hch@lst.de>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Johannes Berg <johannes@sipsolutions.net>,
Andrew Lunn <andrew@lunn.ch>,
Heiner Kallweit <hkallweit1@gmail.com>
Subject: [RFC net-next 02/28] staging: rtlwifi: use siocdevprivate
Date: Fri, 6 Nov 2020 23:17:17 +0100 [thread overview]
Message-ID: <20201106221743.3271965-3-arnd@kernel.org> (raw)
In-Reply-To: <20201106221743.3271965-1-arnd@kernel.org>
From: Arnd Bergmann <arnd@arndb.de>
rtl8188eu has an "android private" ioctl command multiplexer
that is not currently safe for use in compat mode because
of its triple-indirect pointer.
rtl8723bs uses a different interface on the SIOCDEVPRIVATE
command, based on the iwpriv data structure
Both also have normal unreachable iwpriv commands, and all
of the above should probably just get removed. For the
moment, just switch over to the new interface.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/staging/rtl8188eu/include/osdep_intf.h | 2 ++
.../staging/rtl8188eu/include/rtw_android.h | 3 ++-
drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 3 ---
drivers/staging/rtl8188eu/os_dep/os_intfs.c | 1 +
drivers/staging/rtl8188eu/os_dep/rtw_android.c | 13 ++++++++++---
drivers/staging/rtl8723bs/include/osdep_intf.h | 2 ++
drivers/staging/rtl8723bs/os_dep/ioctl_linux.c | 18 +++++++++++++++---
drivers/staging/rtl8723bs/os_dep/os_intfs.c | 1 +
8 files changed, 33 insertions(+), 10 deletions(-)
diff --git a/drivers/staging/rtl8188eu/include/osdep_intf.h b/drivers/staging/rtl8188eu/include/osdep_intf.h
index 07c32768f649..0c2859dc1f15 100644
--- a/drivers/staging/rtl8188eu/include/osdep_intf.h
+++ b/drivers/staging/rtl8188eu/include/osdep_intf.h
@@ -22,6 +22,8 @@ void rtw_stop_drv_threads(struct adapter *padapter);
void rtw_cancel_all_timer(struct adapter *padapter);
int rtw_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+int rtw_android_priv_cmd(struct net_device *dev, struct ifreq *rq,
+ void __user *data, int cmd);
int rtw_init_netdev_name(struct net_device *pnetdev, const char *ifname);
struct net_device *rtw_init_netdev(struct adapter *padapter);
diff --git a/drivers/staging/rtl8188eu/include/rtw_android.h b/drivers/staging/rtl8188eu/include/rtw_android.h
index d7ca7c2fb118..e724d983d298 100644
--- a/drivers/staging/rtl8188eu/include/rtw_android.h
+++ b/drivers/staging/rtl8188eu/include/rtw_android.h
@@ -46,6 +46,7 @@ enum ANDROID_WIFI_CMD {
};
int rtw_android_cmdstr_to_num(char *cmdstr);
-int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr, int cmd);
+int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr,
+ void __user *data, int cmd);
#endif /* __RTW_ANDROID_H__ */
diff --git a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
index 8e10462f1fbe..604d69ba7526 100644
--- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
@@ -3011,9 +3011,6 @@ int rtw_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
ret = rtw_hostapd_ioctl(dev, &wrq->u.data);
break;
#endif /* CONFIG_88EU_AP_MODE */
- case (SIOCDEVPRIVATE + 1):
- ret = rtw_android_priv_cmd(dev, rq, cmd);
- break;
default:
ret = -EOPNOTSUPP;
break;
diff --git a/drivers/staging/rtl8188eu/os_dep/os_intfs.c b/drivers/staging/rtl8188eu/os_dep/os_intfs.c
index e291df87f620..9b126200a208 100644
--- a/drivers/staging/rtl8188eu/os_dep/os_intfs.c
+++ b/drivers/staging/rtl8188eu/os_dep/os_intfs.c
@@ -290,6 +290,7 @@ static const struct net_device_ops rtw_netdev_ops = {
.ndo_set_mac_address = rtw_net_set_mac_address,
.ndo_get_stats = rtw_net_get_stats,
.ndo_do_ioctl = rtw_ioctl,
+ .ndo_siocdevprivate = rtw_android_priv_cmd,
};
int rtw_init_netdev_name(struct net_device *pnetdev, const char *ifname)
diff --git a/drivers/staging/rtl8188eu/os_dep/rtw_android.c b/drivers/staging/rtl8188eu/os_dep/rtw_android.c
index b5209627fd1a..a98d7fc0c723 100644
--- a/drivers/staging/rtl8188eu/os_dep/rtw_android.c
+++ b/drivers/staging/rtl8188eu/os_dep/rtw_android.c
@@ -127,7 +127,8 @@ static int android_get_p2p_addr(struct net_device *net, char *command,
return ETH_ALEN;
}
-int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr, int cmd)
+int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr,
+ void __user *data, int cmd)
{
int ret = 0;
char *command;
@@ -135,9 +136,15 @@ int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr, int cmd)
int bytes_written = 0;
struct android_wifi_priv_cmd priv_cmd;
- if (!ifr->ifr_data)
+ if (cmd != SIOCDEVPRIVATE)
+ return -EOPNOTSUPP;
+
+ if (in_compat_syscall()) /* to be implemented */
+ return -EOPNOTSUPP;
+
+ if (!data)
return -EINVAL;
- if (copy_from_user(&priv_cmd, ifr->ifr_data, sizeof(priv_cmd)))
+ if (copy_from_user(&priv_cmd, data, sizeof(priv_cmd)))
return -EFAULT;
if (priv_cmd.total_len < 1)
return -EINVAL;
diff --git a/drivers/staging/rtl8723bs/include/osdep_intf.h b/drivers/staging/rtl8723bs/include/osdep_intf.h
index c59c1384944b..1f194b94c63c 100644
--- a/drivers/staging/rtl8723bs/include/osdep_intf.h
+++ b/drivers/staging/rtl8723bs/include/osdep_intf.h
@@ -54,6 +54,8 @@ void rtw_stop_drv_threads(struct adapter *padapter);
void rtw_cancel_all_timer(struct adapter *padapter);
int rtw_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
+int rtw_siocdevprivate(struct net_device *dev, struct ifreq *rq,
+ void __user *data, int cmd);
int rtw_init_netdev_name(struct net_device *pnetdev, const char *ifname);
struct net_device *rtw_init_netdev(struct adapter *padapter);
diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
index 902ac8169948..ef2b5f84564c 100644
--- a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
@@ -5134,6 +5134,21 @@ static int rtw_ioctl_wext_private(struct net_device *dev, union iwreq_data *wrq_
return err;
}
+int rtw_siocdevprivate(struct net_device *dev, struct ifreq *rq,
+ void __user *data, int cmd)
+{
+ struct iwreq *wrq = (struct iwreq *)rq;
+
+ /* little hope of fixing this, better remove the whole function */
+ if (in_compat_syscall())
+ return -EOPNOTSUPP;
+
+ if (cmd != SIOCDEVPRIVATE)
+ return -EOPNOTSUPP;
+
+ return rtw_ioctl_wext_private(dev, &wrq->u);
+}
+
int rtw_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct iwreq *wrq = (struct iwreq *)rq;
@@ -5146,9 +5161,6 @@ int rtw_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
case RTL_IOCTL_HOSTAPD:
ret = rtw_hostapd_ioctl(dev, &wrq->u.data);
break;
- case SIOCDEVPRIVATE:
- ret = rtw_ioctl_wext_private(dev, &wrq->u);
- break;
default:
ret = -EOPNOTSUPP;
break;
diff --git a/drivers/staging/rtl8723bs/os_dep/os_intfs.c b/drivers/staging/rtl8723bs/os_dep/os_intfs.c
index 27f990a01a23..e15725ef4c27 100644
--- a/drivers/staging/rtl8723bs/os_dep/os_intfs.c
+++ b/drivers/staging/rtl8723bs/os_dep/os_intfs.c
@@ -470,6 +470,7 @@ static const struct net_device_ops rtw_netdev_ops = {
.ndo_set_mac_address = rtw_net_set_mac_address,
.ndo_get_stats = rtw_net_get_stats,
.ndo_do_ioctl = rtw_ioctl,
+ .ndo_siocdevprivate = rtw_siocdevprivate,
};
int rtw_init_netdev_name(struct net_device *pnetdev, const char *ifname)
--
2.27.0
next prev parent reply other threads:[~2020-11-06 22:18 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-06 22:17 [RFC net-next 00/28] ndo_ioctl rework Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 01/28] net: split out SIOCDEVPRIVATE handling from dev_ioctl Arnd Bergmann
2020-11-06 22:17 ` Arnd Bergmann [this message]
2020-11-06 22:17 ` [RFC net-next 03/28] staging: wlan-ng: use siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 04/28] hostap: use ndo_siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 05/28] wireless: remove old ioctls Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 06/28] bridge: use ndo_siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 07/28] phonet: use siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 08/28] tulip: use ndo_siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 09/28] bonding: use siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 10/28] appletalk: use ndo_siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 11/28] hamachi: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 12/28] tehuti: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 13/28] eql: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 14/28] fddi: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 15/28] net: usb: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 16/28] slip/plip: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 17/28] qeth: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 18/28] cxgb3: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 19/28] dev_ioctl: pass SIOCDEVPRIVATE data separately Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 20/28] dev_ioctl: split out ndo_eth_ioctl Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 21/28] wan: use ndo_siocdevprivate Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 22/28] hamradio: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 23/28] airo: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 24/28] ip_tunnel: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 25/28] hippi: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 26/28] sb1000: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 27/28] ppp: " Arnd Bergmann
2020-11-06 22:17 ` [RFC net-next 28/28] net: socket: return changed ifreq from SIOCDEVPRIVATE Arnd Bergmann
2020-11-08 0:06 ` [RFC net-next 00/28] ndo_ioctl rework Jakub Kicinski
2020-11-08 8:27 ` Arnd Bergmann
2020-11-08 11:21 ` Kalle Valo
2020-11-08 11:42 ` Arnd Bergmann
2020-11-09 11:25 ` Kalle Valo
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