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authorKanchanapally, Vidyullatha <vkanchan@qti.qualcomm.com>2017-03-06 11:43:10 (GMT)
committerJouni Malinen <j@w1.fi>2017-03-06 22:20:29 (GMT)
commit3ab484928a892d806a2c1349606eed47a8eccd40 (patch)
tree5a6f68668a64ce864a8b1c01ba658709e297b403 /src
parentae2f1a9c0f5f066611a81ef311d3ed93b09477fa (diff)
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nl80211: Driver command for checking BTM accept/reject
Add driver interface command using the QCA vendor extensions to check the driverr whether to accept or reject a BSS transition candidate. For the reject case, report an MBO reject reason code. Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Diffstat (limited to 'src')
-rw-r--r--src/drivers/driver.h27
-rw-r--r--src/drivers/driver_nl80211.c201
-rw-r--r--src/drivers/driver_nl80211.h1
-rw-r--r--src/drivers/driver_nl80211_capa.c3
4 files changed, 231 insertions, 1 deletions
diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index 7b3a6bd..1d2dff9 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -1898,6 +1898,20 @@ struct drv_acs_params {
const int *freq_list;
};
+struct wpa_bss_trans_info {
+ u8 mbo_transition_reason;
+ u8 n_candidates;
+ u8 *bssid;
+};
+
+struct wpa_bss_candidate_info {
+ u8 num;
+ struct candidate_list {
+ u8 bssid[ETH_ALEN];
+ u8 is_accept;
+ u32 reject_reason;
+ } *candidates;
+};
/**
* struct wpa_driver_ops - Driver interface API definition
@@ -3808,8 +3822,19 @@ struct wpa_driver_ops {
* trigger control mode to the host driver.
*/
int (*set_tdls_mode)(void *priv, int tdls_external_control);
-};
+ /**
+ * get_bss_transition_status - Get candidate BSS's transition status
+ * @priv: Private driver interface data
+ * @params: Candidate BSS list
+ *
+ * Get the accept or reject reason code for a list of BSS transition
+ * candidates.
+ */
+ struct wpa_bss_candidate_info *
+ (*get_bss_transition_status)(void *priv,
+ struct wpa_bss_trans_info *params);
+};
/**
* enum wpa_event_type - Event type for wpa_supplicant_event() calls
diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c
index e9107b3..5d78113 100644
--- a/src/drivers/driver_nl80211.c
+++ b/src/drivers/driver_nl80211.c
@@ -9655,6 +9655,204 @@ fail:
return -1;
}
+
+#ifdef CONFIG_MBO
+
+static enum mbo_transition_reject_reason
+nl80211_mbo_reject_reason_mapping(enum qca_wlan_btm_candidate_status status)
+{
+ switch (status) {
+ case QCA_STATUS_REJECT_EXCESSIVE_FRAME_LOSS_EXPECTED:
+ return MBO_TRANSITION_REJECT_REASON_FRAME_LOSS;
+ case QCA_STATUS_REJECT_EXCESSIVE_DELAY_EXPECTED:
+ return MBO_TRANSITION_REJECT_REASON_DELAY;
+ case QCA_STATUS_REJECT_INSUFFICIENT_QOS_CAPACITY:
+ return MBO_TRANSITION_REJECT_REASON_QOS_CAPACITY;
+ case QCA_STATUS_REJECT_LOW_RSSI:
+ return MBO_TRANSITION_REJECT_REASON_RSSI;
+ case QCA_STATUS_REJECT_HIGH_INTERFERENCE:
+ return MBO_TRANSITION_REJECT_REASON_INTERFERENCE;
+ case QCA_STATUS_REJECT_UNKNOWN:
+ default:
+ return MBO_TRANSITION_REJECT_REASON_UNSPECIFIED;
+ }
+}
+
+
+static void nl80211_parse_btm_candidate_info(struct candidate_list *candidate,
+ struct nlattr *tb[], int num)
+{
+ enum qca_wlan_btm_candidate_status status;
+ char buf[50];
+
+ os_memcpy(candidate->bssid,
+ nla_data(tb[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_BSSID]),
+ ETH_ALEN);
+
+ status = nla_get_u32(
+ tb[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_STATUS]);
+ candidate->is_accept = status == QCA_STATUS_ACCEPT;
+ candidate->reject_reason = nl80211_mbo_reject_reason_mapping(status);
+
+ if (candidate->is_accept)
+ os_snprintf(buf, sizeof(buf), "Accepted");
+ else
+ os_snprintf(buf, sizeof(buf),
+ "Rejected, Reject_reason: %d",
+ candidate->reject_reason);
+ wpa_printf(MSG_DEBUG, "nl80211: BSSID[%d]: " MACSTR " %s",
+ num, MAC2STR(candidate->bssid), buf);
+}
+
+
+static int
+nl80211_get_bss_transition_status_handler(struct nl_msg *msg, void *arg)
+{
+ struct wpa_bss_candidate_info *info = arg;
+ struct candidate_list *candidate = info->candidates;
+ struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
+ struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_MAX + 1];
+ struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_MAX + 1];
+ static struct nla_policy policy[
+ QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_MAX + 1] = {
+ [QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_BSSID] = {
+ .minlen = ETH_ALEN
+ },
+ [QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_STATUS] = {
+ .type = NLA_U32,
+ },
+ };
+ struct nlattr *attr;
+ int rem;
+ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+ u8 num;
+
+ num = info->num; /* number of candidates sent to driver */
+ info->num = 0;
+ nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
+ genlmsg_attrlen(gnlh, 0), NULL);
+
+ if (!tb_msg[NL80211_ATTR_VENDOR_DATA] ||
+ nla_parse_nested(tb_vendor, QCA_WLAN_VENDOR_ATTR_MAX,
+ tb_msg[NL80211_ATTR_VENDOR_DATA], NULL) ||
+ !tb_vendor[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO])
+ return NL_SKIP;
+
+ wpa_printf(MSG_DEBUG,
+ "nl80211: WNM Candidate list received from driver");
+ nla_for_each_nested(attr,
+ tb_vendor[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO],
+ rem) {
+ if (info->num >= num ||
+ nla_parse_nested(
+ tb, QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_MAX,
+ attr, policy) ||
+ !tb[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_BSSID] ||
+ !tb[QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_STATUS])
+ break;
+
+ nl80211_parse_btm_candidate_info(candidate, tb, info->num);
+
+ candidate++;
+ info->num++;
+ }
+
+ return NL_SKIP;
+}
+
+
+static struct wpa_bss_candidate_info *
+nl80211_get_bss_transition_status(void *priv, struct wpa_bss_trans_info *params)
+{
+ struct i802_bss *bss = priv;
+ struct wpa_driver_nl80211_data *drv = bss->drv;
+ struct nl_msg *msg;
+ struct nlattr *attr, *attr1, *attr2;
+ struct wpa_bss_candidate_info *info;
+ u8 i;
+ int ret;
+ u8 *pos;
+
+ if (!drv->fetch_bss_trans_status)
+ return NULL;
+
+ info = os_zalloc(sizeof(*info));
+ if (!info)
+ return NULL;
+ /* Allocate memory for number of candidates sent to driver */
+ info->candidates = os_calloc(params->n_candidates,
+ sizeof(*info->candidates));
+ if (!info->candidates) {
+ os_free(info);
+ return NULL;
+ }
+
+ /* Copy the number of candidates being sent to driver. This is used in
+ * nl80211_get_bss_transition_status_handler() to limit the number of
+ * candidates that can be populated in info->candidates and will be
+ * later overwritten with the actual number of candidates received from
+ * the driver.
+ */
+ info->num = params->n_candidates;
+
+ if (!(msg = nl80211_drv_msg(drv, 0, NL80211_CMD_VENDOR)) ||
+ nla_put_u32(msg, NL80211_ATTR_VENDOR_ID, OUI_QCA) ||
+ nla_put_u32(msg, NL80211_ATTR_VENDOR_SUBCMD,
+ QCA_NL80211_VENDOR_SUBCMD_FETCH_BSS_TRANSITION_STATUS))
+ goto fail;
+
+ attr = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA);
+ if (!attr)
+ goto fail;
+
+ if (nla_put_u8(msg, QCA_WLAN_VENDOR_ATTR_BTM_MBO_TRANSITION_REASON,
+ params->mbo_transition_reason))
+ goto fail;
+
+ attr1 = nla_nest_start(msg, QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO);
+ if (!attr1)
+ goto fail;
+
+ wpa_printf(MSG_DEBUG,
+ "nl80211: WNM Candidate list info sending to driver: mbo_transition_reason: %d n_candidates: %d",
+ params->mbo_transition_reason, params->n_candidates);
+ pos = params->bssid;
+ for (i = 0; i < params->n_candidates; i++) {
+ wpa_printf(MSG_DEBUG, "nl80211: BSSID[%d]: " MACSTR, i,
+ MAC2STR(pos));
+ attr2 = nla_nest_start(msg, i);
+ if (!attr2 ||
+ nla_put(msg, QCA_WLAN_VENDOR_ATTR_BTM_CANDIDATE_INFO_BSSID,
+ ETH_ALEN, pos))
+ goto fail;
+ pos += ETH_ALEN;
+ nla_nest_end(msg, attr2);
+ }
+
+ nla_nest_end(msg, attr1);
+ nla_nest_end(msg, attr);
+
+ ret = send_and_recv_msgs(drv, msg,
+ nl80211_get_bss_transition_status_handler,
+ info);
+ msg = NULL;
+ if (ret) {
+ wpa_printf(MSG_ERROR,
+ "nl80211: WNM Get BSS transition status failed: ret=%d (%s)",
+ ret, strerror(-ret));
+ goto fail;
+ }
+ return info;
+
+fail:
+ nlmsg_free(msg);
+ os_free(info->candidates);
+ os_free(info);
+ return NULL;
+}
+
+#endif /* CONFIG_MBO */
+
#endif /* CONFIG_DRIVER_NL80211_QCA */
@@ -9899,6 +10097,9 @@ const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.p2p_lo_stop = nl80211_p2p_lo_stop,
.set_default_scan_ies = nl80211_set_default_scan_ies,
.set_tdls_mode = nl80211_set_tdls_mode,
+#ifdef CONFIG_MBO
+ .get_bss_transition_status = nl80211_get_bss_transition_status,
+#endif /* CONFIG_MBO */
#endif /* CONFIG_DRIVER_NL80211_QCA */
.configure_data_frame_filters = nl80211_configure_data_frame_filters,
.get_ext_capab = nl80211_get_ext_capab,
diff --git a/src/drivers/driver_nl80211.h b/src/drivers/driver_nl80211.h
index bdc79c5..7e1f52c 100644
--- a/src/drivers/driver_nl80211.h
+++ b/src/drivers/driver_nl80211.h
@@ -162,6 +162,7 @@ struct wpa_driver_nl80211_data {
unsigned int connect_reassoc:1;
unsigned int set_wifi_conf_vendor_cmd_avail:1;
unsigned int he_capab_vendor_cmd_avail:1;
+ unsigned int fetch_bss_trans_status:1;
u64 vendor_scan_cookie;
u64 remain_on_chan_cookie;
diff --git a/src/drivers/driver_nl80211_capa.c b/src/drivers/driver_nl80211_capa.c
index 7064ce1..d20b04c 100644
--- a/src/drivers/driver_nl80211_capa.c
+++ b/src/drivers/driver_nl80211_capa.c
@@ -747,6 +747,9 @@ static int wiphy_info_handler(struct nl_msg *msg, void *arg)
case QCA_NL80211_VENDOR_SUBCMD_GET_HE_CAPABILITIES:
drv->he_capab_vendor_cmd_avail = 1;
break;
+ case QCA_NL80211_VENDOR_SUBCMD_FETCH_BSS_TRANSITION_STATUS:
+ drv->fetch_bss_trans_status = 1;
+ break;
#endif /* CONFIG_DRIVER_NL80211_QCA */
}
}