From: Emmanuel Grumbach <[email protected]> This allows to find vendor IE from a specific vendor.
Signed-off-by: Emmanuel Grumbach <[email protected]> Signed-off-by: Luca Coelho <[email protected]> --- include/net/cfg80211.h | 4 ++-- net/wireless/scan.c | 8 ++++++-- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 1e008cd..5f6e98ad 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -3893,7 +3893,7 @@ const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); * cfg80211_find_vendor_ie - find vendor specific information element in data * * @oui: vendor OUI - * @oui_type: vendor-specific OUI type + * @oui_type: vendor-specific OUI type (must be < 0xff), negative means any * @ies: data consisting of IEs * @len: length of data * @@ -3905,7 +3905,7 @@ const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); * Note: There are no checks on the element length other than having to fit into * the given data. */ -const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, +const u8 *cfg80211_find_vendor_ie(unsigned int oui, int oui_type, const u8 *ies, int len); /** diff --git a/net/wireless/scan.c b/net/wireless/scan.c index abdf651..ef2955c 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -364,13 +364,16 @@ const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len) } EXPORT_SYMBOL(cfg80211_find_ie); -const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, +const u8 *cfg80211_find_vendor_ie(unsigned int oui, int oui_type, const u8 *ies, int len) { struct ieee80211_vendor_ie *ie; const u8 *pos = ies, *end = ies + len; int ie_oui; + if (WARN_ON(oui_type > 0xff)) + return NULL; + while (pos < end) { pos = cfg80211_find_ie(WLAN_EID_VENDOR_SPECIFIC, pos, end - pos); @@ -386,7 +389,8 @@ const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, goto cont; ie_oui = ie->oui[0] << 16 | ie->oui[1] << 8 | ie->oui[2]; - if (ie_oui == oui && ie->oui_type == oui_type) + if (ie_oui == oui && + (oui_type < 0 || ie->oui_type == oui_type)) return pos; cont: pos += 2 + ie->len; -- 2.8.0.rc3 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
