From a84e64e4321eaca68651438648b8ba43ffc66448 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Sun, 4 Sep 2011 18:23:36 +0000
Subject: [PATCH] hostapd: add a workaround for driver issues in various
android devices with texas instruments wifi
SVN-Revision: 28167
---
.../patches/570-wpa_ie_cap_workaround.patch | 56 +++++++++++++++++++
1 file changed, 56 insertions(+)
create mode 100644 package/hostapd/patches/570-wpa_ie_cap_workaround.patch
diff --git a/package/hostapd/patches/570-wpa_ie_cap_workaround.patch b/package/hostapd/patches/570-wpa_ie_cap_workaround.patch
new file mode 100644
index 0000000000..a7697cfcb5
--- /dev/null
+++ b/package/hostapd/patches/570-wpa_ie_cap_workaround.patch
@@ -0,0 +1,56 @@
+--- a/src/common/wpa_common.c
++++ b/src/common/wpa_common.c
+@@ -811,6 +811,31 @@ const char * wpa_key_mgmt_txt(int key_mg
+ }
+
+
++static void wpa_fixup_wpa_ie_rsn(u8 *assoc_ie, const u8 *wpa_msg_ie,
++ size_t rsn_ie_len)
++{
++ int pos, count;
++
++ pos = sizeof(struct rsn_ie_hdr) + RSN_SELECTOR_LEN;
++ if (rsn_ie_len < pos + 2)
++ return;
++
++ count = WPA_GET_LE16(wpa_msg_ie + pos);
++ pos += 2 + count * RSN_SELECTOR_LEN;
++ if (rsn_ie_len < pos + 2)
++ return;
++
++ count = WPA_GET_LE16(wpa_msg_ie + pos);
++ pos += 2 + count * RSN_SELECTOR_LEN;
++ if (rsn_ie_len < pos + 2)
++ return;
++
++ if (!assoc_ie[pos] && !assoc_ie[pos + 1] &&
++ (wpa_msg_ie[pos] || wpa_msg_ie[pos + 1]))
++ memcpy(&assoc_ie[pos], &wpa_msg_ie[pos], 2);
++}
++
++
+ int wpa_compare_rsn_ie(int ft_initial_assoc,
+ const u8 *ie1, size_t ie1len,
+ const u8 *ie2, size_t ie2len)
+@@ -818,8 +843,19 @@ int wpa_compare_rsn_ie(int ft_initial_as
+ if (ie1 == NULL || ie2 == NULL)
+ return -1;
+
+- if (ie1len == ie2len && os_memcmp(ie1, ie2, ie1len) == 0)
+- return 0; /* identical IEs */
++ if (ie1len == ie2len) {
++ u8 *ie_tmp;
++
++ if (os_memcmp(ie1, ie2, ie1len) == 0)
++ return 0; /* identical IEs */
++
++ ie_tmp = alloca(ie1len);
++ memcpy(ie_tmp, ie1, ie1len);
++ wpa_fixup_wpa_ie_rsn(ie_tmp, ie2, ie1len);
++
++ if (os_memcmp(ie_tmp, ie2, ie1len) == 0)
++ return 0; /* only mismatch in RSN capabilties */
++ }
+
+ #ifdef CONFIG_IEEE80211R
+ if (ft_initial_assoc) {
--
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