{nl,cfg}80211: add a flags word to scan requests
Add a flags word to direct and scheduled scan requests; it will
be used for control of optional behaviours such as flushing the
bss cache prior to doing a scan.
Signed-off-by: Sam Leffler <sleffler@chromium.org>
Tested-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 607b5c0..d95da8f 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1002,6 +1002,7 @@
* @n_channels: total number of channels to scan
* @ie: optional information element(s) to add into Probe Request or %NULL
* @ie_len: length of ie in octets
+ * @flags: bit field of flags controlling operation
* @rates: bitmap of rates to advertise for each band
* @wiphy: the wiphy this was for
* @wdev: the wireless device to scan for
@@ -1014,6 +1015,7 @@
u32 n_channels;
const u8 *ie;
size_t ie_len;
+ u32 flags;
u32 rates[IEEE80211_NUM_BANDS];
@@ -1046,6 +1048,7 @@
* @interval: interval between each scheduled scan cycle
* @ie: optional information element(s) to add into Probe Request or %NULL
* @ie_len: length of ie in octets
+ * @flags: bit field of flags controlling operation
* @match_sets: sets of parameters to be matched for a scan result
* entry to be considered valid and to be passed to the host
* (others are filtered out).
@@ -1063,6 +1066,7 @@
u32 interval;
const u8 *ie;
size_t ie_len;
+ u32 flags;
struct cfg80211_match_set *match_sets;
int n_match_sets;
s32 rssi_thold;
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 71ab23b..4d0b49e 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -1279,6 +1279,8 @@
* @NL80211_ATTR_VHT_CAPABILITY: VHT Capability information element (from
* association request when used with NL80211_CMD_NEW_STATION)
*
+ * @NL80211_ATTR_SCAN_FLAGS: scan request control flags (u32)
+ *
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@@ -1540,6 +1542,8 @@
NL80211_ATTR_VHT_CAPABILITY,
+ NL80211_ATTR_SCAN_FLAGS,
+
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@@ -3086,4 +3090,15 @@
NL80211_CONN_FAIL_BLOCKED_CLIENT,
};
+/**
+ * enum nl80211_scan_flags - scan request control flags
+ *
+ * Scan request control flags are used to control the handling
+ * of NL80211_CMD_TRIGGER_SCAN and NL80211_CMD_START_SCHED_SCAN
+ * requests.
+ * (will be filled)
+enum nl80211_scan_flags {
+};
+ */
+
#endif /* __LINUX_NL80211_H */
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index ef170e9..dc08211 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -356,6 +356,7 @@
[NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
[NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, },
[NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN },
+ [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
};
/* policy for the key attributes */
@@ -4367,6 +4368,10 @@
}
}
+ if (info->attrs[NL80211_ATTR_SCAN_FLAGS])
+ request->flags = nla_get_u32(
+ info->attrs[NL80211_ATTR_SCAN_FLAGS]);
+
request->no_cck =
nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
@@ -4598,6 +4603,10 @@
request->ie_len);
}
+ if (info->attrs[NL80211_ATTR_SCAN_FLAGS])
+ request->flags = nla_get_u32(
+ info->attrs[NL80211_ATTR_SCAN_FLAGS]);
+
request->dev = dev;
request->wiphy = &rdev->wiphy;
request->interval = interval;
@@ -7663,6 +7672,9 @@
nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
goto nla_put_failure;
+ if (req->flags)
+ nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags);
+
return 0;
nla_put_failure:
return -ENOBUFS;