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[12/16] mac80211: add parsing of TDLS specific IEs

Message ID 1415551822-20121-12-git-send-email-arik@wizery.com (mailing list archive)
State Not Applicable, archived
Headers show

Commit Message

Arik Nemtsov Nov. 9, 2014, 4:50 p.m. UTC 
These are used in TDLS channel switching code.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
---
 include/linux/ieee80211.h  | 15 +++++++++++++++
 net/mac80211/ieee80211_i.h |  2 ++
 net/mac80211/util.c        | 16 ++++++++++++++++
 3 files changed, 33 insertions(+)
diff mbox

Patch

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index fbb02d2..4f4eea8 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1067,6 +1067,12 @@  struct ieee80211_pspoll {
 
 /* TDLS */
 
+/* Channel switch timing */
+struct ieee80211_ch_switch_timing {
+	__le16 switch_time;
+	__le16 switch_timeout;
+} __packed;
+
 /* Link-id information element */
 struct ieee80211_tdls_lnkie {
 	u8 ie_type; /* Link Identifier IE */
@@ -1108,6 +1114,15 @@  struct ieee80211_tdls_data {
 			u8 dialog_token;
 			u8 variable[0];
 		} __packed discover_req;
+		struct {
+			u8 target_channel;
+			u8 oper_class;
+			u8 variable[0];
+		} __packed chan_switch_req;
+		struct {
+			__le16 status_code;
+			u8 variable[0];
+		} __packed chan_switch_resp;
 	} u;
 } __packed;
 
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 4b3a7e7..e786ab6 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1400,6 +1400,8 @@  struct ieee802_11_elems {
 	size_t total_len;
 
 	/* pointers to IEs */
+	const struct ieee80211_tdls_lnkie *lnk_id;
+	const struct ieee80211_ch_switch_timing *ch_sw_timing;
 	const u8 *ext_capab;
 	const u8 *ssid;
 	const u8 *supp_rates;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 3ca0c2e..9e5bfd6 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -832,6 +832,8 @@  u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
 		case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
 		case WLAN_EID_CHAN_SWITCH_PARAM:
 		case WLAN_EID_EXT_CAPABILITY:
+		case WLAN_EID_CHAN_SWITCH_TIMING:
+		case WLAN_EID_LINK_ID:
 		/*
 		 * not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
 		 * that if the content gets bigger it might be needed more than once
@@ -851,6 +853,20 @@  u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
 		elem_parse_failed = false;
 
 		switch (id) {
+		case WLAN_EID_LINK_ID:
+			if (elen + 2 != sizeof(struct ieee80211_tdls_lnkie)) {
+				elem_parse_failed = true;
+				break;
+			}
+			elems->lnk_id = (void *)(pos - 2);
+			break;
+		case WLAN_EID_CHAN_SWITCH_TIMING:
+			if (elen != sizeof(struct ieee80211_ch_switch_timing)) {
+				elem_parse_failed = true;
+				break;
+			}
+			elems->ch_sw_timing = (void *)pos;
+			break;
 		case WLAN_EID_EXT_CAPABILITY:
 			elems->ext_capab = pos;
 			elems->ext_capab_len = elen;