[PATCH net-next v3 04/31] hostap: use ndo_siocdevprivate

Arnd Bergmann
2021-07-27T13:46:30Z

hostap has a combination of iwpriv ioctls that do not work at
all, and two SIOCDEVPRIVATE commands that work natively but
lack a compat conversion handler.

For the moment, move them over to the new ndo_siocdevprivate
interface and return an error for compat mode.

Cc: Jouni Malinen <j@w1.fi>
Cc: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/net/wireless/intersil/hostap/hostap.h | 3 +-
.../wireless/intersil/hostap/hostap_ioctl.c | 30 +++++++++++++++----
.../wireless/intersil/hostap/hostap_main.c | 3 ++
3 files changed, 29 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wireless/intersil/hostap/hostap.h b/drivers/net/wireless/intersil/hostap/hostap.h
index c4b81ff7d7e4..c17ab6dbbb53 100644
--- a/drivers/net/wireless/intersil/hostap/hostap.h
+++ b/drivers/net/wireless/intersil/hostap/hostap.h
@@ -93,6 +93,7 @@ extern const struct iw_handler_def hostap_iw_handler_def;
extern const struct ethtool_ops prism2_ethtool_ops;

int hostap_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
-
+int hostap_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
+ void __user *data, int cmd);

#endif /* HOSTAP_H */
diff --git a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
index 49766b285230..0a376f112db9 100644
--- a/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
+++ b/drivers/net/wireless/intersil/hostap/hostap_ioctl.c
@@ -3941,7 +3941,8 @@ const struct iw_handler_def hostap_iw_handler_def =
.get_wireless_stats = hostap_get_wireless_stats,
};

-
+/* Private ioctls (iwpriv) that have not yet been converted
+ * into new wireless extensions API */
int hostap_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct iwreq *wrq = (struct iwreq *) ifr;
@@ -3953,9 +3954,6 @@ int hostap_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
local = iface->local;

switch (cmd) {
- /* Private ioctls (iwpriv) that have not yet been converted
- * into new wireless extensions API */
-
case PRISM2_IOCTL_INQUIRE:
if (!capable(CAP_NET_ADMIN)) ret = -EPERM;
else ret = prism2_ioctl_priv_inquire(dev, (int *) wrq->u.name);
@@ -4009,11 +4007,31 @@ int hostap_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
wrq->u.ap_addr.sa_data);
break;
#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ return ret;
+}

+/* Private ioctls that are not used with iwpriv;
+ * in SIOCDEVPRIVATE range */
+int hostap_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
+ void __user *data, int cmd)
+{
+ struct iwreq *wrq = (struct iwreq *)ifr;
+ struct hostap_interface *iface;
+ local_info_t *local;
+ int ret = 0;

- /* Private ioctls that are not used with iwpriv;
- * in SIOCDEVPRIVATE range */
+ iface = netdev_priv(dev);
+ local = iface->local;
+
+ if (in_compat_syscall()) /* not implemented yet */
+ return -EOPNOTSUPP;

+ switch (cmd) {
#ifdef PRISM2_DOWNLOAD_SUPPORT
case PRISM2_IOCTL_DOWNLOAD:
if (!capable(CAP_NET_ADMIN)) ret = -EPERM;
diff --git a/drivers/net/wireless/intersil/hostap/hostap_main.c b/drivers/net/wireless/intersil/hostap/hostap_main.c
index de97b3304115..54f67b682b6a 100644
--- a/drivers/net/wireless/intersil/hostap/hostap_main.c
+++ b/drivers/net/wireless/intersil/hostap/hostap_main.c
@@ -797,6 +797,7 @@ static const struct net_device_ops hostap_netdev_ops = {
.ndo_open = prism2_open,
.ndo_stop = prism2_close,
.ndo_do_ioctl = hostap_ioctl,
+ .ndo_siocdevprivate = hostap_siocdevprivate,
.ndo_set_mac_address = prism2_set_mac_address,
.ndo_set_rx_mode = hostap_set_multicast_list,
.ndo_tx_timeout = prism2_tx_timeout,
@@ -809,6 +810,7 @@ static const struct net_device_ops hostap_mgmt_netdev_ops = {
.ndo_open = prism2_open,
.ndo_stop = prism2_close,
.ndo_do_ioctl = hostap_ioctl,
+ .ndo_siocdevprivate = hostap_siocdevprivate,
.ndo_set_mac_address = prism2_set_mac_address,
.ndo_set_rx_mode = hostap_set_multicast_list,
.ndo_tx_timeout = prism2_tx_timeout,
@@ -821,6 +823,7 @@ static const struct net_device_ops hostap_master_ops = {
.ndo_open = prism2_open,
.ndo_stop = prism2_close,
.ndo_do_ioctl = hostap_ioctl,
+ .ndo_siocdevprivate = hostap_siocdevprivate,
.ndo_set_mac_address = prism2_set_mac_address,
.ndo_set_rx_mode = hostap_set_multicast_list,
.ndo_tx_timeout = prism2_tx_timeout,
--
2.29.2