[PATCH v2 20/22] nl80211: include frequency offset in survey info

Thomas Pedersen
2020-08-31T20:56:54Z

Recently channels gained a potential frequency offset, so
include this in the per-channel survey info.

Signed-off-by: Thomas Pedersen <thomas@adapt-ip.com>
---
include/uapi/linux/nl80211.h | 2 ++
net/wireless/nl80211.c | 5 +++++
2 files changed, 7 insertions(+)

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 70076492ebc9..dd5591794e48 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -4085,6 +4085,7 @@ enum nl80211_user_reg_hint_type {
* receiving frames destined to the local BSS
* @NL80211_SURVEY_INFO_MAX: highest survey info attribute number
* currently defined
+ * @NL80211_SURVEY_INFO_FREQUENCY_OFFSET: center frequency offset in KHz
* @__NL80211_SURVEY_INFO_AFTER_LAST: internal use
*/
enum nl80211_survey_info {
@@ -4100,6 +4101,7 @@ enum nl80211_survey_info {
NL80211_SURVEY_INFO_TIME_SCAN,
NL80211_SURVEY_INFO_PAD,
NL80211_SURVEY_INFO_TIME_BSS_RX,
+ NL80211_SURVEY_INFO_FREQUENCY_OFFSET,

/* keep last */
__NL80211_SURVEY_INFO_AFTER_LAST,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 578d99088719..5468c02d0927 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -9224,6 +9224,11 @@ static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
survey->channel->center_freq))
goto nla_put_failure;

+ if (survey->channel &&
+ nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
+ survey->channel->freq_offset))
+ goto nla_put_failure;
+
if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
goto nla_put_failure;
--
2.20.1