@@ -721,6 +721,8 @@ struct mac80211_hwsim_data {
/* only used when pmsr capability is supplied */
struct cfg80211_pmsr_capabilities pmsr_capa;
+ struct cfg80211_pmsr_request *pmsr_request;
+ struct wireless_dev *pmsr_request_wdev;
struct mac80211_hwsim_link_data link_data[IEEE80211_MLD_MAX_NUM_LINKS];
};
@@ -3139,6 +3141,208 @@ static int mac80211_hwsim_change_sta_links(struct ieee80211_hw *hw,
return 0;
}
+static int mac80211_hwsim_send_pmsr_ftm_request_peer(struct sk_buff *msg,
+ struct cfg80211_pmsr_ftm_request_peer *request)
+{
+ struct nlattr *ftm;
+
+ if (!request->requested)
+ return -EINVAL;
+
+ ftm = nla_nest_start(msg, NL80211_PMSR_TYPE_FTM);
+ if (!ftm)
+ return -ENOBUFS;
+
+ if (nla_put_u32(msg, NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE, request->preamble))
+ return -ENOBUFS;
+
+ if (nla_put_u16(msg, NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD, request->burst_period))
+ return -ENOBUFS;
+
+ if (request->asap && nla_put_flag(msg, NL80211_PMSR_FTM_REQ_ATTR_ASAP))
+ return -ENOBUFS;
+
+ if (request->request_lci && nla_put_flag(msg, NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI))
+ return -ENOBUFS;
+
+ if (request->request_civicloc &&
+ nla_put_flag(msg, NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC))
+ return -ENOBUFS;
+
+ if (request->trigger_based && nla_put_flag(msg, NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED))
+ return -ENOBUFS;
+
+ if (request->non_trigger_based &&
+ nla_put_flag(msg, NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED))
+ return -ENOBUFS;
+
+ if (request->lmr_feedback && nla_put_flag(msg, NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK))
+ return -ENOBUFS;
+
+ if (nla_put_u8(msg, NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP, request->num_bursts_exp))
+ return -ENOBUFS;
+
+ if (nla_put_u8(msg, NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION, request->burst_duration))
+ return -ENOBUFS;
+
+ if (nla_put_u8(msg, NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST, request->ftms_per_burst))
+ return -ENOBUFS;
+
+ if (nla_put_u8(msg, NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES, request->ftmr_retries))
+ return -ENOBUFS;
+
+ if (nla_put_u8(msg, NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION, request->burst_duration))
+ return -ENOBUFS;
+
+ if (nla_put_u8(msg, NL80211_PMSR_FTM_REQ_ATTR_BSS_COLOR, request->bss_color))
+ return -ENOBUFS;
+
+ nla_nest_end(msg, ftm);
+
+ return 0;
+}
+
+static int mac80211_hwsim_send_pmsr_request_peer(struct sk_buff *msg,
+ struct cfg80211_pmsr_request_peer *request)
+{
+ struct nlattr *peer, *chandef, *req, *data;
+ int err;
+
+ peer = nla_nest_start(msg, NL80211_PMSR_ATTR_PEERS);
+ if (!peer)
+ return -ENOBUFS;
+
+ if (nla_put(msg, NL80211_PMSR_PEER_ATTR_ADDR, ETH_ALEN,
+ request->addr))
+ return -ENOBUFS;
+
+ chandef = nla_nest_start(msg, NL80211_PMSR_PEER_ATTR_CHAN);
+ if (!chandef)
+ return -ENOBUFS;
+
+ err = cfg80211_send_chandef(msg, &request->chandef);
+ if (err)
+ return err;
+
+ nla_nest_end(msg, chandef);
+
+ req = nla_nest_start(msg, NL80211_PMSR_PEER_ATTR_REQ);
+ if (request->report_ap_tsf && nla_put_flag(msg, NL80211_PMSR_REQ_ATTR_GET_AP_TSF))
+ return -ENOBUFS;
+
+ data = nla_nest_start(msg, NL80211_PMSR_REQ_ATTR_DATA);
+ if (!data)
+ return -ENOBUFS;
+
+ err = mac80211_hwsim_send_pmsr_ftm_request_peer(msg, &request->ftm);
+ if (err)
+ return err;
+
+ nla_nest_end(msg, data);
+ nla_nest_end(msg, req);
+ nla_nest_end(msg, peer);
+
+ return 0;
+}
+
+static int mac80211_hwsim_send_pmsr_request(struct sk_buff *msg,
+ struct cfg80211_pmsr_request *request)
+{
+ int err;
+ struct nlattr *pmsr = nla_nest_start(msg, NL80211_ATTR_PEER_MEASUREMENTS);
+
+ if (!pmsr)
+ return -ENOBUFS;
+
+ if (nla_put_u32(msg, NL80211_ATTR_TIMEOUT, request->timeout))
+ return -ENOBUFS;
+
+ if (!is_zero_ether_addr(request->mac_addr)) {
+ if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, request->mac_addr))
+ return -ENOBUFS;
+ if (nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN, request->mac_addr_mask))
+ return -ENOBUFS;
+ }
+
+ for (int i = 0; i < request->n_peers; i++) {
+ err = mac80211_hwsim_send_pmsr_request_peer(msg, &request->peers[i]);
+ if (err)
+ return err;
+ }
+
+ nla_nest_end(msg, pmsr);
+
+ return 0;
+}
+
+static int mac80211_hwsim_start_pmsr(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct cfg80211_pmsr_request *request)
+{
+ struct mac80211_hwsim_data *data = hw->priv;
+ u32 _portid = READ_ONCE(data->wmediumd);
+ int err = 0;
+ struct sk_buff *skb = NULL;
+ void *msg_head;
+ struct nlattr *pmsr;
+
+ if (!_portid && !hwsim_virtio_enabled)
+ return -EOPNOTSUPP;
+
+ mutex_lock(&data->mutex);
+
+ if (data->pmsr_request) {
+ err = -EBUSY;
+ goto out_err;
+ }
+
+ skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
+
+ if (!skb) {
+ err = -ENOMEM;
+ goto out_err;
+ }
+
+ msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
+ HWSIM_CMD_START_PMSR);
+
+ if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
+ ETH_ALEN, data->addresses[1].addr)) {
+ err = -ENOMEM;
+ goto out_err;
+ }
+
+ pmsr = nla_nest_start(skb, HWSIM_ATTR_PMSR_REQUEST);
+ if (!pmsr) {
+ err = -ENOMEM;
+ goto out_err;
+ }
+
+ err = mac80211_hwsim_send_pmsr_request(skb, request);
+ if (err)
+ goto out_err;
+
+ nla_nest_end(skb, pmsr);
+
+ genlmsg_end(skb, msg_head);
+ if (hwsim_virtio_enabled)
+ hwsim_tx_virtio(data, skb);
+ else
+ hwsim_unicast_netgroup(data, skb, _portid);
+
+out_err:
+ if (err && skb)
+ nlmsg_free(skb);
+
+ if (!err) {
+ data->pmsr_request = request;
+ data->pmsr_request_wdev = ieee80211_vif_to_wdev(vif);
+ }
+
+ mutex_unlock(&data->mutex);
+ return err;
+}
+
#define HWSIM_COMMON_OPS \
.tx = mac80211_hwsim_tx, \
.wake_tx_queue = ieee80211_handle_wake_tx_queue, \
@@ -3161,7 +3365,8 @@ static int mac80211_hwsim_change_sta_links(struct ieee80211_hw *hw,
.flush = mac80211_hwsim_flush, \
.get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
.get_et_stats = mac80211_hwsim_get_et_stats, \
- .get_et_strings = mac80211_hwsim_get_et_strings,
+ .get_et_strings = mac80211_hwsim_get_et_strings, \
+ .start_pmsr = mac80211_hwsim_start_pmsr, \
#define HWSIM_NON_MLO_OPS \
.sta_add = mac80211_hwsim_sta_add, \
@@ -81,6 +81,7 @@ enum hwsim_tx_control_flags {
* to this receiver address for a given station.
* @HWSIM_CMD_DEL_MAC_ADDR: remove the MAC address again, the attributes
* are the same as to @HWSIM_CMD_ADD_MAC_ADDR.
+ * @HWSIM_CMD_START_PMSR: start PMSR
* @__HWSIM_CMD_MAX: enum limit
*/
enum {
@@ -93,6 +94,7 @@ enum {
HWSIM_CMD_GET_RADIO,
HWSIM_CMD_ADD_MAC_ADDR,
HWSIM_CMD_DEL_MAC_ADDR,
+ HWSIM_CMD_START_PMSR,
__HWSIM_CMD_MAX,
};
#define HWSIM_CMD_MAX (_HWSIM_CMD_MAX - 1)
@@ -143,6 +145,7 @@ enum {
* @HWSIM_ATTR_MLO_SUPPORT: claim MLO support (exact parameters TBD) for
* the new radio
* @HWSIM_ATTR_PMSR_SUPPORT: claim peer measurement support
+ * @HWSIM_ATTR_PMSR_REQUEST: peer measurement request
* @__HWSIM_ATTR_MAX: enum limit
*/
@@ -175,6 +178,7 @@ enum {
HWSIM_ATTR_CIPHER_SUPPORT,
HWSIM_ATTR_MLO_SUPPORT,
HWSIM_ATTR_PMSR_SUPPORT,
+ HWSIM_ATTR_PMSR_REQUEST,
__HWSIM_ATTR_MAX,
};
#define HWSIM_ATTR_MAX (__HWSIM_ATTR_MAX - 1)
@@ -938,6 +938,16 @@ int cfg80211_chandef_dfs_required(struct wiphy *wiphy,
const struct cfg80211_chan_def *chandef,
enum nl80211_iftype iftype);
+/**
+ * cfg80211_send_chandef - sends the channel definition.
+ * @msg: the msg to send channel definition
+ * @chandef: the channel definition to check
+ *
+ * Returns: 0 if sent the channel definition to msg, < 0 on error
+ **/
+int cfg80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef);
+
+
/**
* ieee80211_chanwidth_rate_flags - return rate flags for channel width
* @width: the channel width of the channel
@@ -3739,8 +3739,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
return result;
}
-static int nl80211_send_chandef(struct sk_buff *msg,
- const struct cfg80211_chan_def *chandef)
+int cfg80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef)
{
if (WARN_ON(!cfg80211_chandef_valid(chandef)))
return -EINVAL;
@@ -3771,6 +3770,13 @@ static int nl80211_send_chandef(struct sk_buff *msg,
return -ENOBUFS;
return 0;
}
+EXPORT_SYMBOL(cfg80211_send_chandef);
+
+static int nl80211_send_chandef(struct sk_buff *msg, const struct cfg80211_chan_def *chandef)
+{
+ return cfg80211_send_chandef(msg, chandef);
+}
+
static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
struct cfg80211_registered_device *rdev,
PMSR (a.k.a. peer measurement) is generalized measurement between two Wi-Fi devices. And currently FTM (a.k.a. fine time measurement or flight time measurement) is the one and only measurement. FTM is measured by RTT (a.k.a. round trip time) of packets between two Wi-Fi devices. This change allows mac80211_hwsim to start PMSR request by passthrough the request to wmediumd via virtio. mac80211_hwsim can't measure RTT for real because mac80211_hwsim the software simulator and packets are sent almost immediately for real. This change expect wmediumd to have all the location information of devices, so passthrough requests to wmediumd. This change adds HWSIM_CMD_ABORT_PMSR. When mac80211_hwsim receives the PMSR start request via ieee80211_ops.start_pmsr, the received cfg80211_pmsr_request is resent to the wmediumd with command HWSIM_CMD_START_PMSR and attribute HWSIM_ATTR_PMSR_REQUEST. The attribute is formatted as the same way as nl80211_pmsr_start() expects. Signed-off-by: Jaewan Kim <jaewan@google.com> --- V1: Initial commit (split from previously large patch) --- drivers/net/wireless/mac80211_hwsim.c | 207 +++++++++++++++++++++++++- drivers/net/wireless/mac80211_hwsim.h | 4 + include/net/cfg80211.h | 10 ++ net/wireless/nl80211.c | 10 +- 4 files changed, 228 insertions(+), 3 deletions(-)