summaryrefslogtreecommitdiffstats
path: root/net/wireless/nl80211.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/wireless/nl80211.c')
-rw-r--r--net/wireless/nl80211.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 32811208135..b0495a1da22 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -148,6 +148,7 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
[NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
+ [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 },
};
/* policy for the attributes */
@@ -4663,6 +4664,124 @@ unlock_rtnl:
return err;
}
+static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev;
+ struct wireless_dev *wdev;
+ struct net_device *dev;
+ u8 ps_state;
+ bool state;
+ int err;
+
+ if (!info->attrs[NL80211_ATTR_PS_STATE]) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
+
+ if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ rtnl_lock();
+
+ err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
+ if (err)
+ goto unlock_rdev;
+
+ wdev = dev->ieee80211_ptr;
+
+ if (!rdev->ops->set_power_mgmt) {
+ err = -EOPNOTSUPP;
+ goto unlock_rdev;
+ }
+
+ state = (ps_state == NL80211_PS_ENABLED) ? true : false;
+
+ if (state == wdev->ps)
+ goto unlock_rdev;
+
+ wdev->ps = state;
+
+ if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, wdev->ps,
+ wdev->ps_timeout))
+ /* assume this means it's off */
+ wdev->ps = false;
+
+unlock_rdev:
+ cfg80211_unlock_rdev(rdev);
+ dev_put(dev);
+ rtnl_unlock();
+
+out:
+ return err;
+}
+
+static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev;
+ enum nl80211_ps_state ps_state;
+ struct wireless_dev *wdev;
+ struct net_device *dev;
+ struct sk_buff *msg;
+ void *hdr;
+ int err;
+
+ rtnl_lock();
+
+ err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
+ if (err)
+ goto unlock_rtnl;
+
+ wdev = dev->ieee80211_ptr;
+
+ if (!rdev->ops->set_power_mgmt) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ hdr = nl80211hdr_put(msg, info->snd_pid, info->snd_seq, 0,
+ NL80211_CMD_GET_POWER_SAVE);
+ if (!hdr) {
+ err = -ENOMEM;
+ goto free_msg;
+ }
+
+ if (wdev->ps)
+ ps_state = NL80211_PS_ENABLED;
+ else
+ ps_state = NL80211_PS_DISABLED;
+
+ NLA_PUT_U32(msg, NL80211_ATTR_PS_STATE, ps_state);
+
+ genlmsg_end(msg, hdr);
+ err = genlmsg_reply(msg, info);
+ goto out;
+
+nla_put_failure:
+ err = -ENOBUFS;
+
+free_msg:
+ nlmsg_free(msg);
+
+out:
+ cfg80211_unlock_rdev(rdev);
+ dev_put(dev);
+
+unlock_rtnl:
+ rtnl_unlock();
+
+ return err;
+}
+
static struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
@@ -4955,6 +5074,18 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
},
+ {
+ .cmd = NL80211_CMD_SET_POWER_SAVE,
+ .doit = nl80211_set_power_save,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_GET_POWER_SAVE,
+ .doit = nl80211_get_power_save,
+ .policy = nl80211_policy,
+ /* can be retrieved by unprivileged users */
+ },
};
static struct genl_multicast_group nl80211_mlme_mcgrp = {