brcmf_cfg80211_connect(struct wiphy *wiphy, struct net_device *ndev,
		       struct cfg80211_connect_params *sme)
{
	struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
	struct brcmf_if *ifp = netdev_priv(ndev);
	struct brcmf_cfg80211_profile *profile = &ifp->vif->profile;
	struct ieee80211_channel *chan = sme->channel;
	struct brcmf_join_params join_params;
	size_t join_params_size;
	const struct brcmf_tlv *rsn_ie;
	const struct brcmf_vs_tlv *wpa_ie;
	const void *ie;
	u32 ie_len;
	struct brcmf_ext_join_params_le *ext_join_params;
	u16 chanspec;
	s32 err = 0;
	u32 ssid_len;

	brcmf_dbg(TRACE, "Enter\n");
	if (!check_vif_up(ifp->vif))
		return -EIO;

	if (!sme->ssid) {
		bphy_err(wiphy, "Invalid ssid\n");
		return -EOPNOTSUPP;
	}

	if (ifp->vif == cfg->p2p.bss_idx[P2PAPI_BSSCFG_PRIMARY].vif) {
		/* A normal (non P2P) connection request setup. */
		ie = NULL;
		ie_len = 0;
		/* find the WPA_IE */
		wpa_ie = brcmf_find_wpaie((u8 *)sme->ie, sme->ie_len);
		if (wpa_ie) {
			ie = wpa_ie;
			ie_len = wpa_ie->len + TLV_HDR_LEN;
		} else {
			/* find the RSN_IE */
			rsn_ie = brcmf_parse_tlvs((const u8 *)sme->ie,
						  sme->ie_len,
						  WLAN_EID_RSN);
			if (rsn_ie) {
				ie = rsn_ie;
				ie_len = rsn_ie->len + TLV_HDR_LEN;
			}
		}
		brcmf_fil_iovar_data_set(ifp, "wpaie", ie, ie_len);
	}

	err = brcmf_vif_set_mgmt_ie(ifp->vif, BRCMF_VNDR_IE_ASSOCREQ_FLAG,
				    sme->ie, sme->ie_len);
	if (err)
		bphy_err(wiphy, "Set Assoc REQ IE Failed\n");
	else
		brcmf_dbg(TRACE, "Applied Vndr IEs for Assoc request\n");

	set_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);

	if (chan) {
		cfg->channel =
			ieee80211_frequency_to_channel(chan->center_freq);
		chanspec = channel_to_chanspec(&cfg->d11inf, chan);
		brcmf_dbg(CONN, "channel=%d, center_req=%d, chanspec=0x%04x\n",
			  cfg->channel, chan->center_freq, chanspec);
	} else {
		cfg->channel = 0;
		chanspec = 0;
	}

	brcmf_dbg(INFO, "ie (%p), ie_len (%zd)\n", sme->ie, sme->ie_len);

	err = brcmf_set_wpa_version(ndev, sme);
	if (err) {
		bphy_err(wiphy, "wl_set_wpa_version failed (%d)\n", err);
		goto done;
	}

	sme->auth_type = brcmf_war_auth_type(ifp, sme->auth_type);
	err = brcmf_set_auth_type(ndev, sme);
	if (err) {
		bphy_err(wiphy, "wl_set_auth_type failed (%d)\n", err);
		goto done;
	}

	err = brcmf_set_wsec_mode(ndev, sme);
	if (err) {
		bphy_err(wiphy, "wl_set_set_cipher failed (%d)\n", err);
		goto done;
	}

	err = brcmf_set_key_mgmt(ndev, sme);
	if (err) {
		bphy_err(wiphy, "wl_set_key_mgmt failed (%d)\n", err);
		goto done;
	}

	err = brcmf_set_sharedkey(ndev, sme);
	if (err) {
		bphy_err(wiphy, "brcmf_set_sharedkey failed (%d)\n", err);
		goto done;
	}

	if (sme->crypto.psk) {
		if (WARN_ON(profile->use_fwsup != BRCMF_PROFILE_FWSUP_NONE)) {
			err = -EINVAL;
			goto done;
		}
		brcmf_dbg(INFO, "using PSK offload\n");
		profile->use_fwsup = BRCMF_PROFILE_FWSUP_PSK;
	}

	if (profile->use_fwsup != BRCMF_PROFILE_FWSUP_NONE) {
		/* enable firmware supplicant for this interface */
		err = brcmf_fil_iovar_int_set(ifp, "sup_wpa", 1);
		if (err < 0) {
			bphy_err(wiphy, "failed to enable fw supplicant\n");
			goto done;
		}
	}

	if (profile->use_fwsup == BRCMF_PROFILE_FWSUP_PSK) {
		err = brcmf_set_pmk(ifp, sme->crypto.psk,
				    BRCMF_WSEC_MAX_PSK_LEN);
		if (err)
			goto done;
	}

	/* Join with specific BSSID and cached SSID
	 * If SSID is zero join based on BSSID only
	 */
	join_params_size = offsetof(struct brcmf_ext_join_params_le, assoc_le) +
		offsetof(struct brcmf_assoc_params_le, chanspec_list);
	if (cfg->channel)
		join_params_size += sizeof(u16);
	ext_join_params = kzalloc(join_params_size, GFP_KERNEL);
	if (ext_join_params == NULL) {
		err = -ENOMEM;
		goto done;
	}
	ssid_len = min_t(u32, sme->ssid_len, IEEE80211_MAX_SSID_LEN);
	ext_join_params->ssid_le.SSID_len = cpu_to_le32(ssid_len);
	memcpy(&ext_join_params->ssid_le.SSID, sme->ssid, ssid_len);
	if (ssid_len < IEEE80211_MAX_SSID_LEN)
		brcmf_dbg(CONN, "SSID \"%s\", len (%d)\n",
			  ext_join_params->ssid_le.SSID, ssid_len);

	/* Set up join scan parameters */
	ext_join_params->scan_le.scan_type = -1;
	ext_join_params->scan_le.home_time = cpu_to_le32(-1);

	if (sme->bssid)
		memcpy(&ext_join_params->assoc_le.bssid, sme->bssid, ETH_ALEN);
	else
		eth_broadcast_addr(ext_join_params->assoc_le.bssid);

	if (cfg->channel) {
		ext_join_params->assoc_le.chanspec_num = cpu_to_le32(1);

		ext_join_params->assoc_le.chanspec_list[0] =
			cpu_to_le16(chanspec);
		/* Increase dwell time to receive probe response or detect
		 * beacon from target AP at a noisy air only during connect
		 * command.
		 */
		ext_join_params->scan_le.active_time =
			cpu_to_le32(BRCMF_SCAN_JOIN_ACTIVE_DWELL_TIME_MS);
		ext_join_params->scan_le.passive_time =
			cpu_to_le32(BRCMF_SCAN_JOIN_PASSIVE_DWELL_TIME_MS);
		/* To sync with presence period of VSDB GO send probe request
		 * more frequently. Probe request will be stopped when it gets
		 * probe response from target AP/GO.
		 */
		ext_join_params->scan_le.nprobes =
			cpu_to_le32(BRCMF_SCAN_JOIN_ACTIVE_DWELL_TIME_MS /
				    BRCMF_SCAN_JOIN_PROBE_INTERVAL_MS);
	} else {
		ext_join_params->scan_le.active_time = cpu_to_le32(-1);
		ext_join_params->scan_le.passive_time = cpu_to_le32(-1);
		ext_join_params->scan_le.nprobes = cpu_to_le32(-1);
	}

	brcmf_set_join_pref(ifp, &sme->bss_select);

	err  = brcmf_fil_bsscfg_data_set(ifp, "join", ext_join_params,
					 join_params_size);
	kfree(ext_join_params);
	if (!err)
		/* This is it. join command worked, we are done */
		goto done;

	/* join command failed, fallback to set ssid */
	memset(&join_params, 0, sizeof(join_params));
	join_params_size = sizeof(join_params.ssid_le);

	memcpy(&join_params.ssid_le.SSID, sme->ssid, ssid_len);
	join_params.ssid_le.SSID_len = cpu_to_le32(ssid_len);

	if (sme->bssid)
		memcpy(join_params.params_le.bssid, sme->bssid, ETH_ALEN);
	else
		eth_broadcast_addr(join_params.params_le.bssid);

	if (cfg->channel) {
		join_params.params_le.chanspec_list[0] = cpu_to_le16(chanspec);
		join_params.params_le.chanspec_num = cpu_to_le32(1);
		join_params_size += sizeof(join_params.params_le);
	}
	err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID,
				     &join_params, join_params_size);
	if (err)
		bphy_err(wiphy, "BRCMF_C_SET_SSID failed (%d)\n", err);

done:
	if (err)
		clear_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);
	brcmf_dbg(TRACE, "Exit\n");
	return err;
}
Unknown