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FT: Fix FTIE generation for 4-way handshake after FT protocol run

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wpa_insert_pmkid() did not support cases where the original RSN IE
included any PMKIDs. That case can happen when PTK rekeying through
4-way handshake is used after FT protocol run. Such a 4-way handshake
used to fail with wpa_supplicant being unable to build the EAPOL-Key msg
2/4.

Fix this by extending wpa_insert_pmkid() to support removal of the old
PMKIDs, if needed.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2015-12-10 00:06:06 +02:00 • committed by Jouni Malinen
parent cc02fd3eff
commit 59e78c2408
4 changed files with 36 additions and 12 deletions
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2
src/common/wpa_common.h
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@ -409,7 +409,7 @@ u32 wpa_akm_to_suite(int akm);
int wpa_compare_rsn_ie(int ft_initial_assoc,
const u8 *ie1, size_t ie1len,
const u8 *ie2, size_t ie2len);
int wpa_insert_pmkid(u8 *ies, size_t ies_len, const u8 *pmkid);
int wpa_insert_pmkid(u8 *ies, size_t *ies_len, const u8 *pmkid);
struct wpa_ft_ies {
const u8 *mdie;