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nl80211: add FILS related parameters to ROAM event 

In case of FILS shared key offload the parameters can change
upon roaming of which user-space needs to be notified.

Reviewed-by: Jithu Jance <jithu.jance@broadcom.com>
Reviewed-by: Eylon Pedinovsky <eylon.pedinovsky@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
hifive-unleashed-5.1
Arend Van Spriel 2018-05-22 10:19:07 +02:00 committed by Johannes Berg
parent 76804d28c3
commit e841b7b11e
4 changed files with 59 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/cfg80211.h
View File

@ -5624,6 +5624,7 @@ cfg80211_connect_timeout(struct net_device *dev, const u8 *bssid,
* @req_ie_len: association request IEs length
* @resp_ie: association response IEs (may be %NULL)
* @resp_ie_len: assoc response IEs length
* @fils: FILS related roaming information.
*/
struct cfg80211_roam_info {
struct ieee80211_channel *channel;
@ -5633,6 +5634,7 @@ struct cfg80211_roam_info {
size_t req_ie_len;
const u8 *resp_ie;
size_t resp_ie_len;
struct cfg80211_fils_resp_params fils;
};
/**

3
include/uapi/linux/nl80211.h
View File

@ -215,7 +215,8 @@
* as specified in IETF RFC 6696.
*
* When FILS shared key authentication is completed, driver needs to provide the
* below additional parameters to userspace.
* below additional parameters to userspace, which can be either after setting
* up a connection or after roaming.
* %NL80211_ATTR_FILS_KEK - used for key renewal
* %NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM - used in further EAP-RP exchanges
* %NL80211_ATTR_PMKID - used to identify the PMKSA used/generated

16
net/wireless/nl80211.c
View File

@ -14264,7 +14264,9 @@ void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
void *hdr;
const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp);
msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
info->fils.kek_len + info->fils.pmk_len +
(info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
if (!msg)
return;
@ -14282,7 +14284,17 @@ void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
info->req_ie)) ||
(info->resp_ie &&
nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
info->resp_ie)))
info->resp_ie)) ||
(info->fils.update_erp_next_seq_num &&
nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
info->fils.erp_next_seq_num)) ||
(info->fils.kek &&
nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
info->fils.kek)) ||
(info->fils.pmk &&
nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
(info->fils.pmkid &&
nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
goto nla_put_failure;
genlmsg_end(msg, hdr);

48
net/wireless/sme.c
View File

@ -932,6 +932,7 @@ void cfg80211_roamed(struct net_device *dev, struct cfg80211_roam_info *info,
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct cfg80211_event *ev;
unsigned long flags;
u8 *next;
if (!info->bss) {
info->bss = cfg80211_get_bss(wdev->wiphy, info->channel,
@ -944,19 +945,52 @@ void cfg80211_roamed(struct net_device *dev, struct cfg80211_roam_info *info,
if (WARN_ON(!info->bss))
return;
ev = kzalloc(sizeof(*ev) + info->req_ie_len + info->resp_ie_len, gfp);
ev = kzalloc(sizeof(*ev) + info->req_ie_len + info->resp_ie_len +
info->fils.kek_len + info->fils.pmk_len +
(info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
if (!ev) {
cfg80211_put_bss(wdev->wiphy, info->bss);
return;
}
ev->type = EVENT_ROAMED;
ev->rm.req_ie = ((u8 *)ev) + sizeof(*ev);
ev->rm.req_ie_len = info->req_ie_len;
memcpy((void *)ev->rm.req_ie, info->req_ie, info->req_ie_len);
ev->rm.resp_ie = ((u8 *)ev) + sizeof(*ev) + info->req_ie_len;
ev->rm.resp_ie_len = info->resp_ie_len;
memcpy((void *)ev->rm.resp_ie, info->resp_ie, info->resp_ie_len);
next = ((u8 *)ev) + sizeof(*ev);
if (info->req_ie_len) {
ev->rm.req_ie = next;
ev->rm.req_ie_len = info->req_ie_len;
memcpy((void *)ev->rm.req_ie, info->req_ie, info->req_ie_len);
next += info->req_ie_len;
}
if (info->resp_ie_len) {
ev->rm.resp_ie = next;
ev->rm.resp_ie_len = info->resp_ie_len;
memcpy((void *)ev->rm.resp_ie, info->resp_ie,
info->resp_ie_len);
next += info->resp_ie_len;
}
if (info->fils.kek_len) {
ev->rm.fils.kek = next;
ev->rm.fils.kek_len = info->fils.kek_len;
memcpy((void *)ev->rm.fils.kek, info->fils.kek,
info->fils.kek_len);
next += info->fils.kek_len;
}
if (info->fils.pmk_len) {
ev->rm.fils.pmk = next;
ev->rm.fils.pmk_len = info->fils.pmk_len;
memcpy((void *)ev->rm.fils.pmk, info->fils.pmk,
info->fils.pmk_len);
next += info->fils.pmk_len;
}
if (info->fils.pmkid) {
ev->rm.fils.pmkid = next;
memcpy((void *)ev->rm.fils.pmkid, info->fils.pmkid,
WLAN_PMKID_LEN);
next += WLAN_PMKID_LEN;
}
ev->rm.fils.update_erp_next_seq_num = info->fils.update_erp_next_seq_num;
if (info->fils.update_erp_next_seq_num)
ev->rm.fils.erp_next_seq_num = info->fils.erp_next_seq_num;
ev->rm.bss = info->bss;
spin_lock_irqsave(&wdev->event_lock, flags);