hostapd: add a workaround for driver issues in various android devices with texas...

git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@28168 3c298f89-4303-0410-b956-a3cf2f4a3e73

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 (file)
index 0000000..a7697cf
--- /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) {