mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

cfg80211: add cipher capabilities 

This adds the necessary code and fields to let drivers specify
their cipher capabilities and exports them to userspace. Also
update mac80211 to export the ciphers it has.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-04-02 20:14:06 +02:00 committed by John W. Linville
parent 6bad876662
commit 25e47c18ac
4 changed files with 36 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/linux/nl80211.h
View File

@ -453,6 +453,9 @@ enum nl80211_commands {
* attributes consists of a nested attribute containing
* NL80211_FREQUENCY_ATTR_*
*
* @NL80211_ATTR_CIPHER_SUITES: a set of u32 values indicating the supported
* cipher suites
*
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@ -540,6 +543,7 @@ enum nl80211_attrs {
NL80211_ATTR_KEY_TYPE,
NL80211_ATTR_MAX_SCAN_IE_LEN,
NL80211_ATTR_CIPHER_SUITES,
NL80211_ATTR_FREQ_BEFORE,
NL80211_ATTR_FREQ_AFTER,

5
include/net/wireless.h
View File

@ -205,6 +205,8 @@ struct ieee80211_supported_band {
* on the reg_notifier() if it chooses to ignore future
* regulatory domain changes caused by other drivers.
* @signal_type: signal type reported in &struct cfg80211_bss.
* @cipher_suites: supported cipher suites
* @n_cipher_suites: number of supported cipher suites
*/
struct wiphy {
/* assign these fields before you register the wiphy */
@ -224,6 +226,9 @@ struct wiphy {
u8 max_scan_ssids;
u16 max_scan_ie_len;
int n_cipher_suites;
const u32 *cipher_suites;
/* If multiple wiphys are registered and you're handed e.g.
* a regular netdev with assigned ieee80211_ptr, you won't
* know whether it points to a wiphy your driver has registered

14
net/mac80211/main.c
View File

@ -823,6 +823,15 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
struct ieee80211_master_priv *mpriv;
int channels, i, j, max_bitrates;
bool supp_ht;
static const u32 cipher_suites[] = {
WLAN_CIPHER_SUITE_WEP40,
WLAN_CIPHER_SUITE_WEP104,
WLAN_CIPHER_SUITE_TKIP,
WLAN_CIPHER_SUITE_CCMP,
/* keep last -- depends on hw flags! */
WLAN_CIPHER_SUITE_AES_CMAC
};
/*
* generic code guarantees at least one band,
@ -894,6 +903,11 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
if (local->hw.wiphy->max_scan_ie_len)
local->hw.wiphy->max_scan_ie_len -= local->scan_ies_len;
local->hw.wiphy->cipher_suites = cipher_suites;
local->hw.wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
if (!(local->hw.flags & IEEE80211_HW_MFP_CAPABLE))
local->hw.wiphy->n_cipher_suites--;
result = wiphy_register(local->hw.wiphy);
if (result < 0)
goto fail_wiphy_register;

14
net/wireless/nl80211.c
View File

@ -208,6 +208,10 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
NLA_PUT_U16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
dev->wiphy.max_scan_ie_len);
NLA_PUT(msg, NL80211_ATTR_CIPHER_SUITES,
sizeof(u32) * dev->wiphy.n_cipher_suites,
dev->wiphy.cipher_suites);
nl_modes = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_IFTYPES);
if (!nl_modes)
goto nla_put_failure;
@ -979,7 +983,7 @@ static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *drv;
int err;
int err, i;
struct net_device *dev;
struct key_params params;
u8 key_idx = 0;
@ -1048,6 +1052,14 @@ static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
if (err)
goto unlock_rtnl;
for (i = 0; i < drv->wiphy.n_cipher_suites; i++)
if (params.cipher == drv->wiphy.cipher_suites[i])
break;
if (i == drv->wiphy.n_cipher_suites) {
err = -EINVAL;
goto out;
}
if (!drv->ops->add_key) {
err = -EOPNOTSUPP;
goto out;