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-rw-r--r--net/wireless/nl80211.c416
1 files changed, 372 insertions, 44 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index a6028433e3a0..5b79ecf17bea 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -69,6 +69,7 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
[NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 },
[NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
[NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
+ [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
[NL80211_ATTR_IFTYPE] = { .type = NLA_U32 },
[NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
@@ -141,6 +142,9 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
[NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
[NL80211_ATTR_PMKID] = { .type = NLA_BINARY,
.len = WLAN_PMKID_LEN },
+ [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
+ [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
+ [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
};
/* policy for the attributes */
@@ -442,6 +446,8 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
dev->wiphy.frag_threshold);
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
dev->wiphy.rts_threshold);
+ NLA_PUT_U8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
+ dev->wiphy.coverage_class);
NLA_PUT_U8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
dev->wiphy.max_scan_ssids);
@@ -569,6 +575,8 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
CMD(set_pmksa, SET_PMKSA);
CMD(del_pmksa, DEL_PMKSA);
CMD(flush_pmksa, FLUSH_PMKSA);
+ CMD(remain_on_channel, REMAIN_ON_CHANNEL);
+ CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
if (dev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
i++;
NLA_PUT_U32(msg, i, NL80211_CMD_SET_WIPHY_NETNS);
@@ -681,6 +689,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
u32 changed;
u8 retry_short = 0, retry_long = 0;
u32 frag_threshold = 0, rts_threshold = 0;
+ u8 coverage_class = 0;
rtnl_lock();
@@ -803,9 +812,16 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
changed |= WIPHY_PARAM_RTS_THRESHOLD;
}
+ if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
+ coverage_class = nla_get_u8(
+ info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
+ changed |= WIPHY_PARAM_COVERAGE_CLASS;
+ }
+
if (changed) {
u8 old_retry_short, old_retry_long;
u32 old_frag_threshold, old_rts_threshold;
+ u8 old_coverage_class;
if (!rdev->ops->set_wiphy_params) {
result = -EOPNOTSUPP;
@@ -816,6 +832,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
old_retry_long = rdev->wiphy.retry_long;
old_frag_threshold = rdev->wiphy.frag_threshold;
old_rts_threshold = rdev->wiphy.rts_threshold;
+ old_coverage_class = rdev->wiphy.coverage_class;
if (changed & WIPHY_PARAM_RETRY_SHORT)
rdev->wiphy.retry_short = retry_short;
@@ -825,6 +842,8 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
rdev->wiphy.frag_threshold = frag_threshold;
if (changed & WIPHY_PARAM_RTS_THRESHOLD)
rdev->wiphy.rts_threshold = rts_threshold;
+ if (changed & WIPHY_PARAM_COVERAGE_CLASS)
+ rdev->wiphy.coverage_class = coverage_class;
result = rdev->ops->set_wiphy_params(&rdev->wiphy, changed);
if (result) {
@@ -832,6 +851,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
rdev->wiphy.retry_long = old_retry_long;
rdev->wiphy.frag_threshold = old_frag_threshold;
rdev->wiphy.rts_threshold = old_rts_threshold;
+ rdev->wiphy.coverage_class = old_coverage_class;
}
}
@@ -1637,42 +1657,9 @@ static int parse_station_flags(struct genl_info *info,
return 0;
}
-static u16 nl80211_calculate_bitrate(struct rate_info *rate)
-{
- int modulation, streams, bitrate;
-
- if (!(rate->flags & RATE_INFO_FLAGS_MCS))
- return rate->legacy;
-
- /* the formula below does only work for MCS values smaller than 32 */
- if (rate->mcs >= 32)
- return 0;
-
- modulation = rate->mcs & 7;
- streams = (rate->mcs >> 3) + 1;
-
- bitrate = (rate->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH) ?
- 13500000 : 6500000;
-
- if (modulation < 4)
- bitrate *= (modulation + 1);
- else if (modulation == 4)
- bitrate *= (modulation + 2);
- else
- bitrate *= (modulation + 3);
-
- bitrate *= streams;
-
- if (rate->flags & RATE_INFO_FLAGS_SHORT_GI)
- bitrate = (bitrate / 9) * 10;
-
- /* do NOT round down here */
- return (bitrate + 50000) / 100000;
-}
-
static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
int flags, struct net_device *dev,
- u8 *mac_addr, struct station_info *sinfo)
+ const u8 *mac_addr, struct station_info *sinfo)
{
void *hdr;
struct nlattr *sinfoattr, *txrate;
@@ -1716,8 +1703,8 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
if (!txrate)
goto nla_put_failure;
- /* nl80211_calculate_bitrate will return 0 for mcs >= 32 */
- bitrate = nl80211_calculate_bitrate(&sinfo->txrate);
+ /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
+ bitrate = cfg80211_calculate_bitrate(&sinfo->txrate);
if (bitrate > 0)
NLA_PUT_U16(msg, NL80211_RATE_INFO_BITRATE, bitrate);
@@ -2583,12 +2570,6 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
-#ifdef CONFIG_WIRELESS_OLD_REGULATORY
- /* We ignore world regdom requests with the old regdom setup */
- if (is_world_regdom(data))
- return -EINVAL;
-#endif
-
r = regulatory_hint_user(data);
return r;
@@ -3182,6 +3163,10 @@ static int nl80211_send_bss(struct sk_buff *msg, u32 pid, u32 seq, int flags,
NLA_PUT(msg, NL80211_BSS_INFORMATION_ELEMENTS,
res->len_information_elements,
res->information_elements);
+ if (res->beacon_ies && res->len_beacon_ies &&
+ res->beacon_ies != res->information_elements)
+ NLA_PUT(msg, NL80211_BSS_BEACON_IES,
+ res->len_beacon_ies, res->beacon_ies);
if (res->tsf)
NLA_PUT_U64(msg, NL80211_BSS_TSF, res->tsf);
if (res->beacon_interval)
@@ -3586,6 +3571,7 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev;
struct net_device *dev;
+ struct wireless_dev *wdev;
struct cfg80211_crypto_settings crypto;
struct ieee80211_channel *chan, *fixedchan;
const u8 *bssid, *ssid, *ie = NULL, *prev_bssid = NULL;
@@ -3631,7 +3617,8 @@ static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
}
mutex_lock(&rdev->devlist_mtx);
- fixedchan = rdev_fixed_channel(rdev, NULL);
+ wdev = dev->ieee80211_ptr;
+ fixedchan = rdev_fixed_channel(rdev, wdev);
if (fixedchan && chan != fixedchan) {
err = -EBUSY;
mutex_unlock(&rdev->devlist_mtx);
@@ -4322,6 +4309,246 @@ static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
}
+static int nl80211_remain_on_channel(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev;
+ struct net_device *dev;
+ struct ieee80211_channel *chan;
+ struct sk_buff *msg;
+ void *hdr;
+ u64 cookie;
+ enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
+ u32 freq, duration;
+ int err;
+
+ if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
+ !info->attrs[NL80211_ATTR_DURATION])
+ return -EINVAL;
+
+ duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
+
+ /*
+ * We should be on that channel for at least one jiffie,
+ * and more than 5 seconds seems excessive.
+ */
+ if (!duration || !msecs_to_jiffies(duration) || duration > 5000)
+ return -EINVAL;
+
+ rtnl_lock();
+
+ err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
+ if (err)
+ goto unlock_rtnl;
+
+ if (!rdev->ops->remain_on_channel) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (!netif_running(dev)) {
+ err = -ENETDOWN;
+ goto out;
+ }
+
+ if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
+ channel_type = nla_get_u32(
+ info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
+ if (channel_type != NL80211_CHAN_NO_HT &&
+ channel_type != NL80211_CHAN_HT20 &&
+ channel_type != NL80211_CHAN_HT40PLUS &&
+ channel_type != NL80211_CHAN_HT40MINUS)
+ err = -EINVAL;
+ goto out;
+ }
+
+ freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]);
+ chan = rdev_freq_to_chan(rdev, freq, channel_type);
+ if (chan == NULL) {
+ err = -EINVAL;
+ 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_REMAIN_ON_CHANNEL);
+
+ if (IS_ERR(hdr)) {
+ err = PTR_ERR(hdr);
+ goto free_msg;
+ }
+
+ err = rdev->ops->remain_on_channel(&rdev->wiphy, dev, chan,
+ channel_type, duration, &cookie);
+
+ if (err)
+ goto free_msg;
+
+ NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
+
+ 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 int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct cfg80211_registered_device *rdev;
+ struct net_device *dev;
+ u64 cookie;
+ int err;
+
+ if (!info->attrs[NL80211_ATTR_COOKIE])
+ return -EINVAL;
+
+ rtnl_lock();
+
+ err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
+ if (err)
+ goto unlock_rtnl;
+
+ if (!rdev->ops->cancel_remain_on_channel) {
+ err = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (!netif_running(dev)) {
+ err = -ENETDOWN;
+ goto out;
+ }
+
+ cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
+
+ err = rdev->ops->cancel_remain_on_channel(&rdev->wiphy, dev, cookie);
+
+ out:
+ cfg80211_unlock_rdev(rdev);
+ dev_put(dev);
+ unlock_rtnl:
+ rtnl_unlock();
+ return err;
+}
+
+static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
+ u8 *rates, u8 rates_len)
+{
+ u8 i;
+ u32 mask = 0;
+
+ for (i = 0; i < rates_len; i++) {
+ int rate = (rates[i] & 0x7f) * 5;
+ int ridx;
+ for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
+ struct ieee80211_rate *srate =
+ &sband->bitrates[ridx];
+ if (rate == srate->bitrate) {
+ mask |= 1 << ridx;
+ break;
+ }
+ }
+ if (ridx == sband->n_bitrates)
+ return 0; /* rate not found */
+ }
+
+ return mask;
+}
+
+static struct nla_policy
+nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] __read_mostly = {
+ [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
+ .len = NL80211_MAX_SUPP_RATES },
+};
+
+static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nlattr *tb[NL80211_TXRATE_MAX + 1];
+ struct cfg80211_registered_device *rdev;
+ struct cfg80211_bitrate_mask mask;
+ int err, rem, i;
+ struct net_device *dev;
+ struct nlattr *tx_rates;
+ struct ieee80211_supported_band *sband;
+
+ if (info->attrs[NL80211_ATTR_TX_RATES] == NULL)
+ return -EINVAL;
+
+ rtnl_lock();
+
+ err = get_rdev_dev_by_info_ifindex(info, &rdev, &dev);
+ if (err)
+ goto unlock_rtnl;
+
+ if (!rdev->ops->set_bitrate_mask) {
+ err = -EOPNOTSUPP;
+ goto unlock;
+ }
+
+ memset(&mask, 0, sizeof(mask));
+ /* Default to all rates enabled */
+ for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
+ sband = rdev->wiphy.bands[i];
+ mask.control[i].legacy =
+ sband ? (1 << sband->n_bitrates) - 1 : 0;
+ }
+
+ /*
+ * The nested attribute uses enum nl80211_band as the index. This maps
+ * directly to the enum ieee80211_band values used in cfg80211.
+ */
+ nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem)
+ {
+ enum ieee80211_band band = nla_type(tx_rates);
+ if (band < 0 || band >= IEEE80211_NUM_BANDS) {
+ err = -EINVAL;
+ goto unlock;
+ }
+ sband = rdev->wiphy.bands[band];
+ if (sband == NULL) {
+ err = -EINVAL;
+ goto unlock;
+ }
+ nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates),
+ nla_len(tx_rates), nl80211_txattr_policy);
+ if (tb[NL80211_TXRATE_LEGACY]) {
+ mask.control[band].legacy = rateset_to_mask(
+ sband,
+ nla_data(tb[NL80211_TXRATE_LEGACY]),
+ nla_len(tb[NL80211_TXRATE_LEGACY]));
+ if (mask.control[band].legacy == 0) {
+ err = -EINVAL;
+ goto unlock;
+ }
+ }
+ }
+
+ err = rdev->ops->set_bitrate_mask(&rdev->wiphy, dev, NULL, &mask);
+
+ unlock:
+ dev_put(dev);
+ cfg80211_unlock_rdev(rdev);
+ unlock_rtnl:
+ rtnl_unlock();
+ return err;
+}
+
static struct genl_ops nl80211_ops[] = {
{
.cmd = NL80211_CMD_GET_WIPHY,
@@ -4584,8 +4811,26 @@ static struct genl_ops nl80211_ops[] = {
.policy = nl80211_policy,
.flags = GENL_ADMIN_PERM,
},
-
+ {
+ .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
+ .doit = nl80211_remain_on_channel,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
+ .doit = nl80211_cancel_remain_on_channel,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
+ .doit = nl80211_set_tx_bitrate_mask,
+ .policy = nl80211_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
};
+
static struct genl_multicast_group nl80211_mlme_mcgrp = {
.name = "mlme",
};
@@ -5173,6 +5418,89 @@ nla_put_failure:
nlmsg_free(msg);
}
+static void nl80211_send_remain_on_chan_event(
+ int cmd, struct cfg80211_registered_device *rdev,
+ struct net_device *netdev, u64 cookie,
+ struct ieee80211_channel *chan,
+ enum nl80211_channel_type channel_type,
+ unsigned int duration, gfp_t gfp)
+{
+ struct sk_buff *msg;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
+ if (!msg)
+ return;
+
+ hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
+ if (!hdr) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex);
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq);
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, channel_type);
+ NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, cookie);
+
+ if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL)
+ NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
+
+ if (genlmsg_end(msg, hdr) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
+ nl80211_mlme_mcgrp.id, gfp);
+ return;
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ nlmsg_free(msg);
+}
+
+void nl80211_send_remain_on_channel(struct cfg80211_registered_device *rdev,
+ struct net_device *netdev, u64 cookie,
+ struct ieee80211_channel *chan,
+ enum nl80211_channel_type channel_type,
+ unsigned int duration, gfp_t gfp)
+{
+ nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
+ rdev, netdev, cookie, chan,
+ channel_type, duration, gfp);
+}
+
+void nl80211_send_remain_on_channel_cancel(
+ struct cfg80211_registered_device *rdev, struct net_device *netdev,
+ u64 cookie, struct ieee80211_channel *chan,
+ enum nl80211_channel_type channel_type, gfp_t gfp)
+{
+ nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
+ rdev, netdev, cookie, chan,
+ channel_type, 0, gfp);
+}
+
+void nl80211_send_sta_event(struct cfg80211_registered_device *rdev,
+ struct net_device *dev, const u8 *mac_addr,
+ struct station_info *sinfo, gfp_t gfp)
+{
+ struct sk_buff *msg;
+
+ msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
+ if (!msg)
+ return;
+
+ if (nl80211_send_station(msg, 0, 0, 0, dev, mac_addr, sinfo) < 0) {
+ nlmsg_free(msg);
+ return;
+ }
+
+ genlmsg_multicast_netns(wiphy_net(&rdev->wiphy), msg, 0,
+ nl80211_mlme_mcgrp.id, gfp);
+}
+
/* initialisation/exit functions */
int nl80211_init(void)
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-08 19:31:10 +0100