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

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SVN-Revision: 28167
This commit is contained in:
Felix Fietkau 2011-09-04 18:23:36 +00:00
parent ed2c8bdc92
commit a84e64e432
1 changed files with 56 additions and 0 deletions
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56
package/hostapd/patches/570-wpa_ie_cap_workaround.patch Normal file
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@ -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) {