}
CMD(set_channel, SET_CHANNEL);
CMD(set_wds_peer, SET_WDS_PEER);
+ if (dev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN)
+ CMD(sched_scan_start, START_SCHED_SCAN);
#undef CMD
return err;
}
+static int nl80211_start_sched_scan(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct cfg80211_sched_scan_request *request;
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ struct net_device *dev = info->user_ptr[1];
+ struct cfg80211_ssid *ssid;
+ struct ieee80211_channel *channel;
+ struct nlattr *attr;
+ struct wiphy *wiphy;
+ int err, tmp, n_ssids = 0, n_channels, i;
+ enum ieee80211_band band;
+ size_t ie_len;
+
+ if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
+ !rdev->ops->sched_scan_start)
+ return -EOPNOTSUPP;
+
+ if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE]))
+ return -EINVAL;
+
+ if (rdev->sched_scan_req)
+ return -EINPROGRESS;
+
+ wiphy = &rdev->wiphy;
+
+ if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
+ n_channels = validate_scan_freqs(
+ info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
+ if (!n_channels)
+ return -EINVAL;
+ } else {
+ n_channels = 0;
+
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++)
+ if (wiphy->bands[band])
+ n_channels += wiphy->bands[band]->n_channels;
+ }
+
+ if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
+ nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
+ tmp)
+ n_ssids++;
+
+ if (n_ssids > wiphy->max_scan_ssids)
+ return -EINVAL;
+
+ if (info->attrs[NL80211_ATTR_IE])
+ ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+ else
+ ie_len = 0;
+
+ if (ie_len > wiphy->max_scan_ie_len)
+ return -EINVAL;
+
+ request = kzalloc(sizeof(*request)
+ + sizeof(*ssid) * n_ssids
+ + sizeof(channel) * n_channels
+ + ie_len, GFP_KERNEL);
+ if (!request)
+ return -ENOMEM;
+
+ if (n_ssids)
+ request->ssids = (void *)&request->channels[n_channels];
+ request->n_ssids = n_ssids;
+ if (ie_len) {
+ if (request->ssids)
+ request->ie = (void *)(request->ssids + n_ssids);
+ else
+ request->ie = (void *)(request->channels + n_channels);
+ }
+
+ i = 0;
+ if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
+ /* user specified, bail out if channel not found */
+ nla_for_each_nested(attr,
+ info->attrs[NL80211_ATTR_SCAN_FREQUENCIES],
+ tmp) {
+ struct ieee80211_channel *chan;
+
+ chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
+
+ if (!chan) {
+ err = -EINVAL;
+ goto out_free;
+ }
+
+ /* ignore disabled channels */
+ if (chan->flags & IEEE80211_CHAN_DISABLED)
+ continue;
+
+ request->channels[i] = chan;
+ i++;
+ }
+ } else {
+ /* all channels */
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ int j;
+ if (!wiphy->bands[band])
+ continue;
+ for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
+ struct ieee80211_channel *chan;
+
+ chan = &wiphy->bands[band]->channels[j];
+
+ if (chan->flags & IEEE80211_CHAN_DISABLED)
+ continue;
+
+ request->channels[i] = chan;
+ i++;
+ }
+ }
+ }
+
+ if (!i) {
+ err = -EINVAL;
+ goto out_free;
+ }
+
+ request->n_channels = i;
+
+ i = 0;
+ if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) {
+ nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS],
+ tmp) {
+ if (request->ssids[i].ssid_len >
+ IEEE80211_MAX_SSID_LEN) {
+ err = -EINVAL;
+ goto out_free;
+ }
+ memcpy(request->ssids[i].ssid, nla_data(attr),
+ nla_len(attr));
+ request->ssids[i].ssid_len = nla_len(attr);
+ i++;
+ }
+ }
+
+ if (info->attrs[NL80211_ATTR_IE]) {
+ request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+ memcpy((void *)request->ie,
+ nla_data(info->attrs[NL80211_ATTR_IE]),
+ request->ie_len);
+ }
+
+ request->dev = dev;
+ request->wiphy = &rdev->wiphy;
+
+ err = rdev->ops->sched_scan_start(&rdev->wiphy, dev, request);
+ if (!err) {
+ rdev->sched_scan_req = request;
+ nl80211_send_sched_scan(rdev, dev,
+ NL80211_CMD_START_SCHED_SCAN);
+ goto out;
+ }
+
+out_free:
+ kfree(request);
+out:
+ return err;
+}
+
+static int nl80211_stop_sched_scan(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+
+ if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) ||
+ !rdev->ops->sched_scan_stop)
+ return -EOPNOTSUPP;
+
+ return __cfg80211_stop_sched_scan(rdev, false);
+}
+
static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev,
.policy = nl80211_policy,
.dumpit = nl80211_dump_scan,
},
+ {
+ .cmd = NL80211_CMD_START_SCHED_SCAN,
+ .doit = nl80211_start_sched_scan,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
+ {
+ .cmd = NL80211_CMD_STOP_SCHED_SCAN,
+ .doit = nl80211_stop_sched_scan,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
+ NL80211_FLAG_NEED_RTNL,
+ },
{
.cmd = NL80211_CMD_AUTHENTICATE,
.doit = nl80211_authenticate,
return -EMSGSIZE;
}
+static int
+nl80211_send_sched_scan_msg(struct sk_buff *msg,
+ struct cfg80211_registered_device *rdev,
+ struct net_device *netdev,
+ u32 pid, u32 seq, int flags, u32 cmd)
+{
+ void *hdr;
+
+ hdr = nl80211hdr_put(msg, pid, seq, flags, cmd);
+ if (!hdr)
+ return -1;
+
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+
+ return genlmsg_end(msg, hdr);
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
struct net_device *netdev)
{
nl80211_scan_mcgrp.id, GFP_KERNEL);
}
+void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev)
+{
+ struct sk_buff *msg;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0,
+ NL80211_CMD_SCHED_SCAN_RESULTS) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
+ nl80211_scan_mcgrp.id, GFP_KERNEL);
+}
+
+void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev, u32 cmd)
+{
+ struct sk_buff *msg;
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
+ if (!msg)
+ return;
+
+ if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
+ nl80211_scan_mcgrp.id, GFP_KERNEL);
+}
+
/*
* This can happen on global regulatory changes or device specific settings
* based on custom world regulatory domains.
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / blobdiff