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nl80211: Add flag attribute for RRM connections 

Add a flag attribute to use in associations, for tagging the target
connection as supporting RRM. It is the responsibility of upper
layers to set this flag only if both the underlying device, and the
target network indeed support RRM.
To be used in ASSOCIATE and CONNECT commands.

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Assaf Krauss 2014-09-03 15:25:01 +03:00 committed by Johannes Berg
parent 1c7e23bf50
commit bab5ab7d2a
3 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/cfg80211.h
View File

@ -1608,10 +1608,12 @@ struct cfg80211_auth_request {
*
* @ASSOC_REQ_DISABLE_HT: Disable HT (802.11n)
* @ASSOC_REQ_DISABLE_VHT: Disable VHT
* @ASSOC_REQ_USE_RRM: Declare RRM capability in this association
*/
enum cfg80211_assoc_req_flags {
ASSOC_REQ_DISABLE_HT = BIT(0),
ASSOC_REQ_DISABLE_VHT = BIT(1),
ASSOC_REQ_USE_RRM = BIT(2),
};
/**

13
include/uapi/linux/nl80211.h
View File

@ -1594,6 +1594,17 @@ enum nl80211_commands {
* @NL80211_ATTR_TDLS_INITIATOR: flag attribute indicating the current end is
* the TDLS link initiator.
*
* @NL80211_ATTR_USE_RRM: flag for indicating whether the current connection
* shall support Radio Resource Measurements (11k). This attribute can be
* used with %NL80211_CMD_ASSOCIATE and %NL80211_CMD_CONNECT requests.
* User space applications are expected to use this flag only if the
* underlying device supports these minimal RRM features:
* %NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES,
* %NL80211_FEATURE_QUIET,
* If this flag is used, driver must add the Power Capabilities IE to the
* association request. In addition, it must also set the RRM capability
* flag in the association request's Capability Info field.
*
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@ -1936,6 +1947,8 @@ enum nl80211_attrs {
NL80211_ATTR_TDLS_INITIATOR,
NL80211_ATTR_USE_RRM,
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,

17
net/wireless/nl80211.c
View File

@ -389,6 +389,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
[NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
[NL80211_ATTR_IFACE_SOCKET_OWNER] = { .type = NLA_FLAG },
[NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
[NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
};
/* policy for the key attributes */
@ -6584,6 +6585,14 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
sizeof(req.vht_capa));
}
if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
if (!(rdev->wiphy.features &
NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
!(rdev->wiphy.features & NL80211_FEATURE_QUIET))
return -EINVAL;
req.flags |= ASSOC_REQ_USE_RRM;
}
err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
if (!err) {
wdev_lock(dev->ieee80211_ptr);
@ -7241,6 +7250,14 @@ static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
sizeof(connect.vht_capa));
}
if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
if (!(rdev->wiphy.features &
NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) ||
!(rdev->wiphy.features & NL80211_FEATURE_QUIET))
return -EINVAL;
connect.flags |= ASSOC_REQ_USE_RRM;
}
wdev_lock(dev->ieee80211_ptr);
err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL);
wdev_unlock(dev->ieee80211_ptr);