diff options
Diffstat (limited to 'net/wireless/nl80211.c')
| -rw-r--r-- | net/wireless/nl80211.c | 131 |
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 = { |