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Merge tag 'mac80211-next-for-davem-2016-12-09' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

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Johannes Berg says:

====================
Three fixes:
 * fix a logic bug introduced by a previous cleanup
 * fix nl80211 attribute confusing (trying to use
   a single attribute for two purposes)
 * fix a long-standing BSS leak that happens when an
   association attempt is abandoned
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2016-12-09 22:59:05 -05:00
parent 524a64c726 e6f462df9a
commit 5ac9efbe1c
7 changed files with 72 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
net/wireless/core.h
View File

@@ -410,6 +410,7 @@ void cfg80211_sme_disassoc(struct wireless_dev *wdev);
void cfg80211_sme_deauth(struct wireless_dev *wdev);
void cfg80211_sme_auth_timeout(struct wireless_dev *wdev);
void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev);
void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev);
/* internal helpers */
bool cfg80211_supported_cipher_suite(struct wiphy *wiphy, u32 cipher);

12
net/wireless/mlme.c
View File

@@ -149,6 +149,18 @@ void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss)
}
EXPORT_SYMBOL(cfg80211_assoc_timeout);
void cfg80211_abandon_assoc(struct net_device *dev, struct cfg80211_bss *bss)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
cfg80211_sme_abandon_assoc(wdev);
cfg80211_unhold_bss(bss_from_pub(bss));
cfg80211_put_bss(wiphy, bss);
}
EXPORT_SYMBOL(cfg80211_abandon_assoc);
void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;

18
net/wireless/nl80211.c
View File

@@ -404,6 +404,7 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
.len = FILS_MAX_KEK_LEN },
[NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN },
[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
[NL80211_ATTR_BSSID] = { .len = ETH_ALEN },
};
/* policy for the key attributes */
@@ -6703,7 +6704,20 @@ static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
request->no_cck =
nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
if (info->attrs[NL80211_ATTR_MAC])
/* Initial implementation used NL80211_ATTR_MAC to set the specific
* BSSID to scan for. This was problematic because that same attribute
* was already used for another purpose (local random MAC address). The
* NL80211_ATTR_BSSID attribute was added to fix this. For backwards
* compatibility with older userspace components, also use the
* NL80211_ATTR_MAC value here if it can be determined to be used for
* the specific BSSID use case instead of the random MAC address
* (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
*/
if (info->attrs[NL80211_ATTR_BSSID])
memcpy(request->bssid,
nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
info->attrs[NL80211_ATTR_MAC])
memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
ETH_ALEN);
else
@@ -10628,7 +10642,7 @@ static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
if (wdev->iftype != NL80211_IFTYPE_NAN)
return -EOPNOTSUPP;
if (!wdev_running(wdev))
if (wdev_running(wdev))
return -EEXIST;
if (rfkill_blocked(rdev->rfkill))

14
net/wireless/sme.c
View File

@@ -39,6 +39,7 @@ struct cfg80211_conn {
CFG80211_CONN_ASSOCIATING,
CFG80211_CONN_ASSOC_FAILED,
CFG80211_CONN_DEAUTH,
CFG80211_CONN_ABANDON,
CFG80211_CONN_CONNECTED,
} state;
u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN];
@@ -206,6 +207,8 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev)
cfg80211_mlme_deauth(rdev, wdev->netdev, params->bssid,
NULL, 0,
WLAN_REASON_DEAUTH_LEAVING, false);
/* fall through */
case CFG80211_CONN_ABANDON:
/* free directly, disconnected event already sent */
cfg80211_sme_free(wdev);
return 0;
@@ -423,6 +426,17 @@ void cfg80211_sme_assoc_timeout(struct wireless_dev *wdev)
schedule_work(&rdev->conn_work);
}
void cfg80211_sme_abandon_assoc(struct wireless_dev *wdev)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
if (!wdev->conn)
return;
wdev->conn->state = CFG80211_CONN_ABANDON;
schedule_work(&rdev->conn_work);
}
static int cfg80211_sme_get_conn_ies(struct wireless_dev *wdev,
const u8 *ies, size_t ies_len,
const u8 **out_ies, size_t *out_ies_len)