From 53837584438f8899e061ada4663ae1d09b49b96a Mon Sep 17 00:00:00 2001 From: Arik Nemtsov Date: Sun, 9 Nov 2014 18:50:18 +0200 Subject: [PATCH] mac80211: add parsing of TDLS specific IEs These are used in TDLS channel switching code. Signed-off-by: Arik Nemtsov Signed-off-by: Arik Nemtsov Signed-off-by: Johannes Berg --- include/linux/ieee80211.h | 15 +++++++++++++++ net/mac80211/ieee80211_i.h | 2 ++ net/mac80211/util.c | 16 ++++++++++++++++ 3 files changed, 33 insertions(+) diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h index fbb02d240658..4f4eea8a6288 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 4b3a7e7ec2a0..e786ab6bc72c 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 3ca0c2e725ff..9e5bfd614856 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; -- 2.45.2