[PATCH v3 11/22] cfg80211: parse S1G Operation element for BSS channel
From: Thomas Pedersen <hidden>
Date: 2020-09-08 19:04:40
Subsystem:
802.11 (including cfg80211/nl80211), the rest · Maintainers:
Johannes Berg, Linus Torvalds
Extract the BSS primary channel from the S1G Operation element. Signed-off-by: Thomas Pedersen <redacted> --- net/wireless/scan.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-)
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index b4c85e8f2107..c2dcb9092257 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c@@ -1318,15 +1318,26 @@ cfg80211_get_bss_channel(struct wiphy *wiphy, const u8 *ie, size_t ielen, tmp = cfg80211_find_ie(WLAN_EID_DS_PARAMS, ie, ielen); if (tmp && tmp[1] == 1) { channel_number = tmp[2]; - } else { - tmp = cfg80211_find_ie(WLAN_EID_HT_OPERATION, ie, ielen); - if (tmp && tmp[1] >= sizeof(struct ieee80211_ht_operation)) { - struct ieee80211_ht_operation *htop = (void *)(tmp + 2); + goto found_channel; + } - channel_number = htop->primary_chan; - } + tmp = cfg80211_find_ie(WLAN_EID_HT_OPERATION, ie, ielen); + if (tmp && tmp[1] >= sizeof(struct ieee80211_ht_operation)) { + struct ieee80211_ht_operation *htop = (void *)(tmp + 2); + + channel_number = htop->primary_chan; + goto found_channel; + } + + tmp = cfg80211_find_ie(WLAN_EID_S1G_OPERATION, ie, ielen); + if (tmp && tmp[1] >= sizeof(struct ieee80211_s1g_oper_ie)) { + struct ieee80211_s1g_oper_ie *s1gop = (void *)(tmp + 2); + + channel_number = s1gop->primary_ch; + goto found_channel; } +found_channel: if (channel_number < 0) { /* No channel information in frame payload */ return channel;
--
2.20.1