diff options
| author | Eliad Peller <eliad@wizery.com> | 2017-06-09 15:08:42 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2017-06-13 11:43:56 +0300 |
| commit | 91b5ab628929d97357108594610e7c07be93e2fd (patch) | |
| tree | 9a29ed4032549e3d0893d6f7cb0ccfc2e518dd40 /net/wireless | |
| parent | 699cb58c8a52ff39bf659bff7971893ebe111bf2 (diff) | |
| download | linux-91b5ab628929d97357108594610e7c07be93e2fd.tar.xz | |
cfg80211: support 4-way handshake offloading for WPA/WPA2-PSK
Let drivers advertise support for station-mode 4-way handshake
offloading with a new NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK flag.
Extend use of NL80211_ATTR_PMK attribute indicating it might be passed
as part of NL80211_CMD_CONNECT command, and contain the PSK (which is
the PMK, hence the name.)
The driver/device is assumed to handle the 4-way handshake by
itself in this case (including key derivations, etc.), instead
of relying on the supplicant.
This patch is somewhat based on this one (by Vladimir Kondratiev):
https://patchwork.kernel.org/patch/1309561/.
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
[arend.vanspriel@broadcom.com rebase dealing with existing ATTR_PMK]
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
[reword NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK docs to indicate
that this offload might be required]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 9eb59196a378..2c6863aee4e4 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -8168,6 +8168,15 @@ static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, memcpy(settings->akm_suites, data, len); } + if (info->attrs[NL80211_ATTR_PMK]) { + if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN) + return -EINVAL; + if (!wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK)) + return -EINVAL; + settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]); + } + return 0; } |