The current definition of SIOCG80211JOIN uses 256 for the command,
but the _IOC() macro only allows 8 bit for the command value.
Using 256 would set the lowermost bit of the ioctl group.
Fortunately, 'i' (0x69) already has the lowermost bit set. Otherwise
SIOCG80211JOIN would never reach ifioctl().
The patch below is compatible with the current definition and
results in no binary change, it just reflects reality better.
Gerhard
--- sys/net80211/ieee80211_ioctl.h 2020/04/29 13:13:30 1.40
+++ sys/net80211/ieee80211_ioctl.h 2020/10/05 11:24:06
@@ -275,11 +275,11 @@ struct ieee80211_keyrun {
#define SIOCS80211SCAN _IOW('i', 210, struct ifreq)
#define SIOCG80211JOINALL _IOWR('i', 218, struct
ieee80211_joinreq_all)
#define SIOCS80211JOIN _IOWR('i', 255, struct ifreq)
-#define SIOCG80211JOIN _IOWR('i', 256, struct ifreq)
+#define SIOCG80211JOIN _IOWR('i', 0, struct ifreq)
/* join is pointed at by ifr.ifr_data */
struct ieee80211_join {
u_int8_t i_len; /* length of i_nwid */
u_int8_t i_nwid[IEEE80211_NWID_LEN];
