From: Johannes Berg <johannes@sipsolutions.net>
To: linux-wireless@vger.kernel.org
Cc: Johannes Berg <johannes.berg@intel.com>
Subject: [PATCH 1/5] mac80211: fils: use cfg80211_find_ext_elem()
Date: Thu, 30 Sep 2021 13:11:28 +0200 [thread overview]
Message-ID: <20210930131130.17ecf37f0605.I853c2f9c2117a713deca9b8deb3552796d98ffac@changeid> (raw)
From: Johannes Berg <johannes.berg@intel.com>
Replace the use of cfg80211_find_ext_ie() with the more
structured cfg80211_find_ext_elem().
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
net/mac80211/fils_aead.c | 22 ++++++++++++----------
1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/net/mac80211/fils_aead.c b/net/mac80211/fils_aead.c
index a13ae148937e..e1d4cfd99128 100644
--- a/net/mac80211/fils_aead.c
+++ b/net/mac80211/fils_aead.c
@@ -219,7 +219,8 @@ int fils_encrypt_assoc_req(struct sk_buff *skb,
{
struct ieee80211_mgmt *mgmt = (void *)skb->data;
u8 *capab, *ies, *encr;
- const u8 *addr[5 + 1], *session;
+ const u8 *addr[5 + 1];
+ const struct element *session;
size_t len[5 + 1];
size_t crypt_len;
@@ -231,12 +232,12 @@ int fils_encrypt_assoc_req(struct sk_buff *skb,
ies = mgmt->u.assoc_req.variable;
}
- session = cfg80211_find_ext_ie(WLAN_EID_EXT_FILS_SESSION,
- ies, skb->data + skb->len - ies);
- if (!session || session[1] != 1 + 8)
+ session = cfg80211_find_ext_elem(WLAN_EID_EXT_FILS_SESSION,
+ ies, skb->data + skb->len - ies);
+ if (!session || session->datalen != 1 + 8)
return -EINVAL;
/* encrypt after FILS Session element */
- encr = (u8 *)session + 2 + 1 + 8;
+ encr = (u8 *)session->data + 1 + 8;
/* AES-SIV AAD vectors */
@@ -270,7 +271,8 @@ int fils_decrypt_assoc_resp(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_mgmt *mgmt = (void *)frame;
u8 *capab, *ies, *encr;
- const u8 *addr[5 + 1], *session;
+ const u8 *addr[5 + 1];
+ const struct element *session;
size_t len[5 + 1];
int res;
size_t crypt_len;
@@ -280,16 +282,16 @@ int fils_decrypt_assoc_resp(struct ieee80211_sub_if_data *sdata,
capab = (u8 *)&mgmt->u.assoc_resp.capab_info;
ies = mgmt->u.assoc_resp.variable;
- session = cfg80211_find_ext_ie(WLAN_EID_EXT_FILS_SESSION,
- ies, frame + *frame_len - ies);
- if (!session || session[1] != 1 + 8) {
+ session = cfg80211_find_ext_elem(WLAN_EID_EXT_FILS_SESSION,
+ ies, frame + *frame_len - ies);
+ if (!session || session->datalen != 1 + 8) {
mlme_dbg(sdata,
"No (valid) FILS Session element in (Re)Association Response frame from %pM",
mgmt->sa);
return -EINVAL;
}
/* decrypt after FILS Session element */
- encr = (u8 *)session + 2 + 1 + 8;
+ encr = (u8 *)session->data + 1 + 8;
/* AES-SIV AAD vectors */
--
2.31.1
next reply other threads:[~2021-09-30 11:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-30 11:11 Johannes Berg [this message]
2021-09-30 11:11 ` [PATCH 2/5] nl80211: use element finding functions Johannes Berg
2021-09-30 11:11 ` [PATCH 3/5] cfg80211: scan: use element finding functions in easy cases Johannes Berg
2021-09-30 11:11 ` [PATCH 4/5] mac80211: use ieee80211_bss_get_elem() in most places Johannes Berg
2021-09-30 11:11 ` [PATCH 5/5] cfg80211: use ieee80211_bss_get_elem() instead of _get_ie() Johannes Berg
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