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Message-Id: <20240809094533.1660-23-yu-hao.lin@nxp.com>
Date: Fri, 9 Aug 2024 17:45:12 +0800
From: David Lin <yu-hao.lin@....com>
To: linux-wireless@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
kvalo@...nel.org,
johannes@...solutions.net,
briannorris@...omium.org,
francesco@...cini.it,
tsung-hsien.hsieh@....com,
David Lin <yu-hao.lin@....com>
Subject: [PATCH v2 22/43] wifi: nxpwifi: add join.c
---
drivers/net/wireless/nxp/nxpwifi/join.c | 915 ++++++++++++++++++++++++
1 file changed, 915 insertions(+)
create mode 100644 drivers/net/wireless/nxp/nxpwifi/join.c
diff --git a/drivers/net/wireless/nxp/nxpwifi/join.c b/drivers/net/wireless/nxp/nxpwifi/join.c
new file mode 100644
index 000000000000..842f26987728
--- /dev/null
+++ b/drivers/net/wireless/nxp/nxpwifi/join.c
@@ -0,0 +1,915 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * NXP Wireless LAN device driver: association and ad-hoc start/join
+ *
+ * Copyright 2011-2024 NXP
+ */
+
+#include "decl.h"
+#include "cfg.h"
+#include "util.h"
+#include "fw.h"
+#include "main.h"
+#include "cmdevt.h"
+#include "wmm.h"
+#include "11n.h"
+#include "11ac.h"
+
+#define CAPINFO_MASK (~(BIT(15) | BIT(14) | BIT(12) | BIT(11) | BIT(9)))
+
+/* Append a generic IE as a pass through TLV to a TLV buffer.
+ *
+ * This function is called from the network join command preparation routine.
+ *
+ * If the IE buffer has been setup by the application, this routine appends
+ * the buffer as a pass through TLV type to the request.
+ */
+static int
+nxpwifi_cmd_append_generic_ie(struct nxpwifi_private *priv, u8 **buffer)
+{
+ int ret_len = 0;
+ struct nxpwifi_ie_types_header ie_header;
+
+ /* Null Checks */
+ if (!buffer)
+ return 0;
+ if (!(*buffer))
+ return 0;
+
+ /* If there is a generic ie buffer setup, append it to the return
+ * parameter buffer pointer.
+ */
+ if (priv->gen_ie_buf_len) {
+ nxpwifi_dbg(priv->adapter, INFO,
+ "info: %s: append generic ie len %d to %p\n",
+ __func__, priv->gen_ie_buf_len, *buffer);
+
+ /* Wrap the generic IE buffer with a pass through TLV type */
+ ie_header.type = cpu_to_le16(TLV_TYPE_PASSTHROUGH);
+ ie_header.len = cpu_to_le16(priv->gen_ie_buf_len);
+ memcpy(*buffer, &ie_header, sizeof(ie_header));
+
+ /* Increment the return size and the return buffer pointer
+ * param
+ */
+ *buffer += sizeof(ie_header);
+ ret_len += sizeof(ie_header);
+
+ /* Copy the generic IE buffer to the output buffer, advance
+ * pointer
+ */
+ memcpy(*buffer, priv->gen_ie_buf, priv->gen_ie_buf_len);
+
+ /* Increment the return size and the return buffer pointer
+ * param
+ */
+ *buffer += priv->gen_ie_buf_len;
+ ret_len += priv->gen_ie_buf_len;
+
+ /* Reset the generic IE buffer */
+ priv->gen_ie_buf_len = 0;
+ }
+
+ /* return the length appended to the buffer */
+ return ret_len;
+}
+
+/* Append TSF tracking info from the scan table for the target AP.
+ *
+ * This function is called from the network join command preparation routine.
+ *
+ * The TSF table TSF sent to the firmware contains two TSF values:
+ * - The TSF of the target AP from its previous beacon/probe response
+ * - The TSF timestamp of our local MAC at the time we observed the
+ * beacon/probe response.
+ *
+ * The firmware uses the timestamp values to set an initial TSF value
+ * in the MAC for the new association after a reassociation attempt.
+ */
+static int
+nxpwifi_cmd_append_tsf_tlv(struct nxpwifi_private *priv, u8 **buffer,
+ struct nxpwifi_bssdescriptor *bss_desc)
+{
+ struct nxpwifi_ie_types_tsf_timestamp tsf_tlv;
+ __le64 tsf_val;
+
+ /* Null Checks */
+ if (!buffer)
+ return 0;
+ if (!*buffer)
+ return 0;
+
+ memset(&tsf_tlv, 0x00, sizeof(struct nxpwifi_ie_types_tsf_timestamp));
+
+ tsf_tlv.header.type = cpu_to_le16(TLV_TYPE_TSFTIMESTAMP);
+ tsf_tlv.header.len = cpu_to_le16(2 * sizeof(tsf_val));
+
+ memcpy(*buffer, &tsf_tlv, sizeof(tsf_tlv.header));
+ *buffer += sizeof(tsf_tlv.header);
+
+ /* TSF at the time when beacon/probe_response was received */
+ tsf_val = cpu_to_le64(bss_desc->fw_tsf);
+ memcpy(*buffer, &tsf_val, sizeof(tsf_val));
+ *buffer += sizeof(tsf_val);
+
+ tsf_val = cpu_to_le64(bss_desc->timestamp);
+
+ nxpwifi_dbg(priv->adapter, INFO,
+ "info: %s: TSF offset calc: %016llx - %016llx\n",
+ __func__, bss_desc->timestamp, bss_desc->fw_tsf);
+
+ memcpy(*buffer, &tsf_val, sizeof(tsf_val));
+ *buffer += sizeof(tsf_val);
+
+ return sizeof(tsf_tlv.header) + (2 * sizeof(tsf_val));
+}
+
+/* This function finds out the common rates between rate1 and rate2.
+ *
+ * It will fill common rates in rate1 as output if found.
+ *
+ * NOTE: Setting the MSB of the basic rates needs to be taken
+ * care of, either before or after calling this function.
+ */
+static int nxpwifi_get_common_rates(struct nxpwifi_private *priv, u8 *rate1,
+ u32 rate1_size, u8 *rate2, u32 rate2_size)
+{
+ int ret;
+ u8 *ptr = rate1, *tmp;
+ u32 i, j;
+
+ tmp = kmemdup(rate1, rate1_size, GFP_KERNEL);
+ if (!tmp)
+ return -ENOMEM;
+
+ memset(rate1, 0, rate1_size);
+
+ for (i = 0; i < rate2_size && rate2[i]; i++) {
+ for (j = 0; j < rate1_size && tmp[j]; j++) {
+ /* Check common rate, excluding the bit for
+ * basic rate
+ */
+ if ((rate2[i] & 0x7F) == (tmp[j] & 0x7F)) {
+ *rate1++ = tmp[j];
+ break;
+ }
+ }
+ }
+
+ nxpwifi_dbg(priv->adapter, INFO, "info: Tx data rate set to %#x\n",
+ priv->data_rate);
+
+ if (!priv->is_data_rate_auto) {
+ while (*ptr) {
+ if ((*ptr & 0x7f) == priv->data_rate) {
+ ret = 0;
+ goto done;
+ }
+ ptr++;
+ }
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "previously set fixed data rate %#x\t"
+ "is not compatible with the network\n",
+ priv->data_rate);
+
+ ret = -EPERM;
+ goto done;
+ }
+
+ ret = 0;
+done:
+ kfree(tmp);
+ return ret;
+}
+
+/* This function creates the intersection of the rates supported by a
+ * target BSS and our adapter settings for use in an assoc/join command.
+ */
+static int
+nxpwifi_setup_rates_from_bssdesc(struct nxpwifi_private *priv,
+ struct nxpwifi_bssdescriptor *bss_desc,
+ u8 *out_rates, u32 *out_rates_size)
+{
+ u8 card_rates[NXPWIFI_SUPPORTED_RATES];
+ u32 card_rates_size;
+ int ret;
+
+ /* Copy AP supported rates */
+ memcpy(out_rates, bss_desc->supported_rates, NXPWIFI_SUPPORTED_RATES);
+ /* Get the STA supported rates */
+ card_rates_size = nxpwifi_get_active_data_rates(priv, card_rates);
+ /* Get the common rates between AP and STA supported rates */
+ ret = nxpwifi_get_common_rates(priv, out_rates, NXPWIFI_SUPPORTED_RATES,
+ card_rates, card_rates_size);
+ if (ret) {
+ *out_rates_size = 0;
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "%s: cannot get common rates\n",
+ __func__);
+ } else {
+ *out_rates_size =
+ min_t(size_t, strlen(out_rates), NXPWIFI_SUPPORTED_RATES);
+ }
+
+ return ret;
+}
+
+/* This function appends a WPS IE. It is called from the network join command
+ * preparation routine.
+ *
+ * If the IE buffer has been setup by the application, this routine appends
+ * the buffer as a WPS TLV type to the request.
+ */
+static int
+nxpwifi_cmd_append_wps_ie(struct nxpwifi_private *priv, u8 **buffer)
+{
+ int ret_len = 0;
+ struct nxpwifi_ie_types_header ie_header;
+
+ if (!buffer || !*buffer)
+ return 0;
+
+ /* If there is a wps ie buffer setup, append it to the return
+ * parameter buffer pointer.
+ */
+ if (priv->wps_ie_len) {
+ nxpwifi_dbg(priv->adapter, CMD,
+ "cmd: append wps ie %d to %p\n",
+ priv->wps_ie_len, *buffer);
+
+ /* Wrap the generic IE buffer with a pass through TLV type */
+ ie_header.type = cpu_to_le16(TLV_TYPE_PASSTHROUGH);
+ ie_header.len = cpu_to_le16(priv->wps_ie_len);
+ memcpy(*buffer, &ie_header, sizeof(ie_header));
+ *buffer += sizeof(ie_header);
+ ret_len += sizeof(ie_header);
+
+ memcpy(*buffer, priv->wps_ie, priv->wps_ie_len);
+ *buffer += priv->wps_ie_len;
+ ret_len += priv->wps_ie_len;
+ }
+
+ kfree(priv->wps_ie);
+ priv->wps_ie_len = 0;
+ return ret_len;
+}
+
+/* This function appends rsn ie tlv for wpa/wpa2 security modes.
+ * It is called from the network join command preparation routine.
+ */
+static int nxpwifi_append_rsn_ie_wpa_wpa2(struct nxpwifi_private *priv,
+ u8 **buffer)
+{
+ struct nxpwifi_ie_types_rsn_param_set *rsn_ie_tlv;
+ int rsn_ie_len;
+
+ if (!buffer || !(*buffer))
+ return 0;
+
+ rsn_ie_tlv = (struct nxpwifi_ie_types_rsn_param_set *)(*buffer);
+ rsn_ie_tlv->header.type = cpu_to_le16((u16)priv->wpa_ie[0]);
+ rsn_ie_tlv->header.type =
+ cpu_to_le16(le16_to_cpu(rsn_ie_tlv->header.type) & 0x00FF);
+ rsn_ie_tlv->header.len = cpu_to_le16((u16)priv->wpa_ie[1]);
+ rsn_ie_tlv->header.len = cpu_to_le16(le16_to_cpu(rsn_ie_tlv->header.len)
+ & 0x00FF);
+ if (le16_to_cpu(rsn_ie_tlv->header.len) <= (sizeof(priv->wpa_ie) - 2))
+ memcpy(rsn_ie_tlv->rsn_ie, &priv->wpa_ie[2],
+ le16_to_cpu(rsn_ie_tlv->header.len));
+ else
+ return -ENOMEM;
+
+ rsn_ie_len = sizeof(rsn_ie_tlv->header) +
+ le16_to_cpu(rsn_ie_tlv->header.len);
+ *buffer += rsn_ie_len;
+
+ return rsn_ie_len;
+}
+
+/* This function prepares command for association.
+ *
+ * This sets the following parameters -
+ * - Peer MAC address
+ * - Listen interval
+ * - Beacon interval
+ * - Capability information
+ *
+ * ...and the following TLVs, as required -
+ * - SSID TLV
+ * - PHY TLV
+ * - SS TLV
+ * - Rates TLV
+ * - Authentication TLV
+ * - Channel TLV
+ * - WPA/WPA2 IE
+ * - 11n TLV
+ * - Vendor specific TLV
+ * - WMM TLV
+ * - Generic IE
+ * - TSF TLV
+ *
+ * Preparation also includes -
+ * - Setting command ID and proper size
+ * - Ensuring correct endian-ness
+ */
+int nxpwifi_cmd_802_11_associate(struct nxpwifi_private *priv,
+ struct host_cmd_ds_command *cmd,
+ struct nxpwifi_bssdescriptor *bss_desc)
+{
+ struct host_cmd_ds_802_11_associate *assoc = &cmd->params.associate;
+ struct nxpwifi_ie_types_host_mlme *host_mlme_tlv;
+ struct nxpwifi_ie_types_ssid_param_set *ssid_tlv;
+ struct nxpwifi_ie_types_phy_param_set *phy_tlv;
+ struct nxpwifi_ie_types_ss_param_set *ss_tlv;
+ struct nxpwifi_ie_types_rates_param_set *rates_tlv;
+ struct nxpwifi_ie_types_auth_type *auth_tlv;
+ struct nxpwifi_ie_types_sae_pwe_mode *sae_pwe_tlv;
+ struct nxpwifi_ie_types_chan_list_param_set *chan_tlv;
+ u8 rates[NXPWIFI_SUPPORTED_RATES];
+ u32 rates_size;
+ u16 tmp_cap;
+ u8 *pos;
+ int rsn_ie_len = 0;
+ int ret;
+
+ pos = (u8 *)assoc;
+
+ cmd->command = cpu_to_le16(HOST_CMD_802_11_ASSOCIATE);
+
+ /* Save so we know which BSS Desc to use in the response handler */
+ priv->attempted_bss_desc = bss_desc;
+
+ memcpy(assoc->peer_sta_addr,
+ bss_desc->mac_address, sizeof(assoc->peer_sta_addr));
+ pos += sizeof(assoc->peer_sta_addr);
+
+ /* Set the listen interval */
+ assoc->listen_interval = cpu_to_le16(priv->listen_interval);
+ /* Set the beacon period */
+ assoc->beacon_period = cpu_to_le16(bss_desc->beacon_period);
+
+ pos += sizeof(assoc->cap_info_bitmap);
+ pos += sizeof(assoc->listen_interval);
+ pos += sizeof(assoc->beacon_period);
+ pos += sizeof(assoc->dtim_period);
+
+ host_mlme_tlv = (struct nxpwifi_ie_types_host_mlme *)pos;
+ host_mlme_tlv->header.type = cpu_to_le16(TLV_TYPE_HOST_MLME);
+ host_mlme_tlv->header.len = cpu_to_le16(sizeof(host_mlme_tlv->host_mlme));
+ host_mlme_tlv->host_mlme = 1;
+ pos += sizeof(host_mlme_tlv->header) + sizeof(host_mlme_tlv->host_mlme);
+
+ ssid_tlv = (struct nxpwifi_ie_types_ssid_param_set *)pos;
+ ssid_tlv->header.type = cpu_to_le16(WLAN_EID_SSID);
+ ssid_tlv->header.len = cpu_to_le16((u16)bss_desc->ssid.ssid_len);
+ memcpy(ssid_tlv->ssid, bss_desc->ssid.ssid,
+ le16_to_cpu(ssid_tlv->header.len));
+ pos += sizeof(ssid_tlv->header) + le16_to_cpu(ssid_tlv->header.len);
+
+ phy_tlv = (struct nxpwifi_ie_types_phy_param_set *)pos;
+ phy_tlv->header.type = cpu_to_le16(WLAN_EID_DS_PARAMS);
+ phy_tlv->header.len = cpu_to_le16(sizeof(phy_tlv->fh_ds.ds_param_set));
+ memcpy(&phy_tlv->fh_ds.ds_param_set,
+ &bss_desc->phy_param_set.ds_param_set.current_chan,
+ sizeof(phy_tlv->fh_ds.ds_param_set));
+ pos += sizeof(phy_tlv->header) + le16_to_cpu(phy_tlv->header.len);
+
+ ss_tlv = (struct nxpwifi_ie_types_ss_param_set *)pos;
+ ss_tlv->header.type = cpu_to_le16(WLAN_EID_CF_PARAMS);
+ ss_tlv->header.len = cpu_to_le16(sizeof(ss_tlv->cf_ibss.cf_param_set));
+ pos += sizeof(ss_tlv->header) + le16_to_cpu(ss_tlv->header.len);
+
+ /* Get the common rates supported between the driver and the BSS Desc */
+ ret = nxpwifi_setup_rates_from_bssdesc(priv, bss_desc,
+ rates, &rates_size);
+ if (ret)
+ return ret;
+
+ /* Save the data rates into Current BSS state structure */
+ priv->curr_bss_params.num_of_rates = rates_size;
+ memcpy(&priv->curr_bss_params.data_rates, rates, rates_size);
+
+ /* Setup the Rates TLV in the association command */
+ rates_tlv = (struct nxpwifi_ie_types_rates_param_set *)pos;
+ rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES);
+ rates_tlv->header.len = cpu_to_le16((u16)rates_size);
+ memcpy(rates_tlv->rates, rates, rates_size);
+ pos += sizeof(rates_tlv->header) + rates_size;
+ nxpwifi_dbg(priv->adapter, INFO, "info: ASSOC_CMD: rates size = %d\n",
+ rates_size);
+
+ /* Add the Authentication type */
+ auth_tlv = (struct nxpwifi_ie_types_auth_type *)pos;
+ auth_tlv->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
+ auth_tlv->header.len = cpu_to_le16(sizeof(auth_tlv->auth_type));
+ if (priv->sec_info.wep_enabled)
+ auth_tlv->auth_type =
+ cpu_to_le16((u16)priv->sec_info.authentication_mode);
+ else
+ auth_tlv->auth_type = cpu_to_le16(NL80211_AUTHTYPE_OPEN_SYSTEM);
+
+ pos += sizeof(auth_tlv->header) + le16_to_cpu(auth_tlv->header.len);
+
+ if (priv->sec_info.authentication_mode == WLAN_AUTH_SAE) {
+ auth_tlv->auth_type = cpu_to_le16(NXPWIFI_AUTHTYPE_SAE);
+ if (bss_desc->bcn_rsnx_ie &&
+ bss_desc->bcn_rsnx_ie->datalen &&
+ (bss_desc->bcn_rsnx_ie->data[0] &
+ WLAN_RSNX_CAPA_SAE_H2E)) {
+ sae_pwe_tlv =
+ (struct nxpwifi_ie_types_sae_pwe_mode *)pos;
+ sae_pwe_tlv->header.type =
+ cpu_to_le16(TLV_TYPE_SAE_PWE_MODE);
+ sae_pwe_tlv->header.len =
+ cpu_to_le16(sizeof(sae_pwe_tlv->pwe[0]));
+ sae_pwe_tlv->pwe[0] = bss_desc->bcn_rsnx_ie->data[0];
+ pos += sizeof(sae_pwe_tlv->header) +
+ sizeof(sae_pwe_tlv->pwe[0]);
+ }
+ }
+
+ if (IS_SUPPORT_MULTI_BANDS(priv->adapter) &&
+ !(ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
+ !bss_desc->disable_11n &&
+ (priv->adapter->config_bands & BAND_GN ||
+ priv->adapter->config_bands & BAND_AN) &&
+ bss_desc->bcn_ht_cap)) {
+ /* Append a channel TLV for the channel the attempted AP was
+ * found on
+ */
+ chan_tlv = (struct nxpwifi_ie_types_chan_list_param_set *)pos;
+ chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
+ chan_tlv->header.len =
+ cpu_to_le16(sizeof(struct nxpwifi_chan_scan_param_set));
+
+ memset(chan_tlv->chan_scan_param, 0x00,
+ sizeof(struct nxpwifi_chan_scan_param_set));
+ chan_tlv->chan_scan_param[0].chan_number =
+ (bss_desc->phy_param_set.ds_param_set.current_chan);
+ nxpwifi_dbg(priv->adapter, INFO, "info: Assoc: TLV Chan = %d\n",
+ chan_tlv->chan_scan_param[0].chan_number);
+
+ chan_tlv->chan_scan_param[0].radio_type =
+ nxpwifi_band_to_radio_type((u8)bss_desc->bss_band);
+
+ nxpwifi_dbg(priv->adapter, INFO, "info: Assoc: TLV Band = %d\n",
+ chan_tlv->chan_scan_param[0].radio_type);
+ pos += sizeof(chan_tlv->header) +
+ sizeof(struct nxpwifi_chan_scan_param_set);
+ }
+
+ if (!priv->wps.session_enable) {
+ if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
+ rsn_ie_len = nxpwifi_append_rsn_ie_wpa_wpa2(priv, &pos);
+
+ if (rsn_ie_len == -ENOMEM)
+ return -ENOMEM;
+ }
+
+ if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
+ !bss_desc->disable_11n &&
+ (priv->adapter->config_bands & BAND_GN ||
+ priv->adapter->config_bands & BAND_AN))
+ nxpwifi_cmd_append_11n_tlv(priv, bss_desc, &pos);
+
+ if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info) &&
+ !bss_desc->disable_11n && !bss_desc->disable_11ac &&
+ priv->adapter->config_bands & BAND_AAC)
+ nxpwifi_cmd_append_11ac_tlv(priv, bss_desc, &pos);
+
+ /* Append vendor specific IE TLV */
+ nxpwifi_cmd_append_vsie_tlv(priv, NXPWIFI_VSIE_MASK_ASSOC, &pos);
+
+ nxpwifi_wmm_process_association_req(priv, &pos, &bss_desc->wmm_ie,
+ bss_desc->bcn_ht_cap);
+
+ if (priv->wps.session_enable && priv->wps_ie_len)
+ nxpwifi_cmd_append_wps_ie(priv, &pos);
+
+ nxpwifi_cmd_append_generic_ie(priv, &pos);
+
+ nxpwifi_cmd_append_tsf_tlv(priv, &pos, bss_desc);
+
+ nxpwifi_11h_process_join(priv, &pos, bss_desc);
+
+ cmd->size = cpu_to_le16((u16)(pos - (u8 *)assoc) + S_DS_GEN);
+
+ /* Set the Capability info at last */
+ tmp_cap = bss_desc->cap_info_bitmap;
+
+ if (priv->adapter->config_bands == BAND_B)
+ tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
+
+ tmp_cap &= CAPINFO_MASK;
+ nxpwifi_dbg(priv->adapter, INFO,
+ "info: ASSOC_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
+ tmp_cap, CAPINFO_MASK);
+ assoc->cap_info_bitmap = cpu_to_le16(tmp_cap);
+
+ return ret;
+}
+
+static const char *assoc_failure_reason_to_str(u16 cap_info)
+{
+ switch (cap_info) {
+ case CONNECT_ERR_AUTH_ERR_STA_FAILURE:
+ return "CONNECT_ERR_AUTH_ERR_STA_FAILURE";
+ case CONNECT_ERR_AUTH_MSG_UNHANDLED:
+ return "CONNECT_ERR_AUTH_MSG_UNHANDLED";
+ case CONNECT_ERR_ASSOC_ERR_TIMEOUT:
+ return "CONNECT_ERR_ASSOC_ERR_TIMEOUT";
+ case CONNECT_ERR_ASSOC_ERR_AUTH_REFUSED:
+ return "CONNECT_ERR_ASSOC_ERR_AUTH_REFUSED";
+ case CONNECT_ERR_STA_FAILURE:
+ return "CONNECT_ERR_STA_FAILURE";
+ }
+
+ return "Unknown connect failure";
+}
+
+/* Association firmware command response handler
+ *
+ * The response buffer for the association command has the following
+ * memory layout.
+ *
+ * For cases where an association response was not received (indicated
+ * by the CapInfo and AId field):
+ *
+ * .------------------------------------------------------------.
+ * | Header(4 * sizeof(t_u16)): Standard command response hdr |
+ * .------------------------------------------------------------.
+ * | cap_info/Error Return(t_u16): |
+ * | 0xFFFF(-1): Internal error |
+ * | 0xFFFE(-2): Authentication unhandled message |
+ * | 0xFFFD(-3): Authentication refused |
+ * | 0xFFFC(-4): Timeout waiting for AP response |
+ * .------------------------------------------------------------.
+ * | status_code(t_u16): |
+ * | If cap_info is -1: |
+ * | An internal firmware failure prevented the |
+ * | command from being processed. The status_code |
+ * | will be set to 1. |
+ * | |
+ * | If cap_info is -2: |
+ * | An authentication frame was received but was |
+ * | not handled by the firmware. IEEE Status |
+ * | code for the failure is returned. |
+ * | |
+ * | If cap_info is -3: |
+ * | An authentication frame was received and the |
+ * | status_code is the IEEE Status reported in the |
+ * | response. |
+ * | |
+ * | If cap_info is -4: |
+ * | (1) Association response timeout |
+ * | (2) Authentication response timeout |
+ * .------------------------------------------------------------.
+ * | a_id(t_u16): 0xFFFF |
+ * .------------------------------------------------------------.
+ *
+ *
+ * For cases where an association response was received, the IEEE
+ * standard association response frame is returned:
+ *
+ * .------------------------------------------------------------.
+ * | Header(4 * sizeof(t_u16)): Standard command response hdr |
+ * .------------------------------------------------------------.
+ * | cap_info(t_u16): IEEE Capability |
+ * .------------------------------------------------------------.
+ * | status_code(t_u16): IEEE Status Code |
+ * .------------------------------------------------------------.
+ * | a_id(t_u16): IEEE Association ID |
+ * .------------------------------------------------------------.
+ * | IEEE IEs(variable): Any received IEs comprising the |
+ * | remaining portion of a received |
+ * | association response frame. |
+ * .------------------------------------------------------------.
+ *
+ * For simplistic handling, the status_code field can be used to determine
+ * an association success (0) or failure (non-zero).
+ */
+int nxpwifi_ret_802_11_associate(struct nxpwifi_private *priv,
+ struct host_cmd_ds_command *resp)
+{
+ struct nxpwifi_adapter *adapter = priv->adapter;
+ int ret = 0;
+ struct ieee_types_assoc_rsp *assoc_rsp;
+ struct nxpwifi_bssdescriptor *bss_desc;
+ bool enable_data = true;
+ u16 cap_info, status_code, aid;
+ const u8 *ie_ptr;
+ struct ieee80211_ht_operation *assoc_resp_ht_oper;
+ struct ieee80211_mgmt *hdr;
+
+ if (!priv->attempted_bss_desc) {
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "%s: failed, association terminated by host\n",
+ __func__);
+ goto done;
+ }
+
+ hdr = (struct ieee80211_mgmt *)&resp->params;
+ if (!memcmp(hdr->bssid, priv->attempted_bss_desc->mac_address,
+ ETH_ALEN))
+ assoc_rsp = (struct ieee_types_assoc_rsp *)&hdr->u.assoc_resp;
+ else
+ assoc_rsp = (struct ieee_types_assoc_rsp *)&resp->params;
+
+ cap_info = le16_to_cpu(assoc_rsp->cap_info_bitmap);
+ status_code = le16_to_cpu(assoc_rsp->status_code);
+ aid = le16_to_cpu(assoc_rsp->a_id);
+
+ if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
+ dev_err(priv->adapter->dev,
+ "invalid AID value 0x%x; bits 15:14 not set\n",
+ aid);
+
+ aid &= ~(BIT(15) | BIT(14));
+
+ priv->assoc_rsp_size = min(le16_to_cpu(resp->size) - S_DS_GEN,
+ sizeof(priv->assoc_rsp_buf));
+
+ assoc_rsp->a_id = cpu_to_le16(aid);
+ memcpy(priv->assoc_rsp_buf, &resp->params, priv->assoc_rsp_size);
+
+ if (status_code) {
+ priv->adapter->dbg.num_cmd_assoc_failure++;
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "ASSOC_RESP: failed,\t"
+ "status code=%d err=%#x a_id=%#x\n",
+ status_code, cap_info,
+ le16_to_cpu(assoc_rsp->a_id));
+
+ nxpwifi_dbg(priv->adapter, ERROR, "assoc failure: reason %s\n",
+ assoc_failure_reason_to_str(cap_info));
+ if (cap_info == CONNECT_ERR_ASSOC_ERR_TIMEOUT) {
+ if (status_code == NXPWIFI_ASSOC_CMD_FAILURE_AUTH) {
+ ret = WLAN_STATUS_AUTH_TIMEOUT;
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "ASSOC_RESP: AUTH timeout\n");
+ } else {
+ ret = WLAN_STATUS_UNSPECIFIED_FAILURE;
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "ASSOC_RESP: UNSPECIFIED failure\n");
+ }
+
+ priv->assoc_rsp_size = 0;
+ } else {
+ ret = status_code;
+ }
+
+ goto done;
+ }
+
+ /* Send a Media Connected event, according to the Spec */
+ priv->media_connected = true;
+
+ priv->adapter->ps_state = PS_STATE_AWAKE;
+ priv->adapter->pps_uapsd_mode = false;
+ priv->adapter->tx_lock_flag = false;
+
+ /* Set the attempted BSSID Index to current */
+ bss_desc = priv->attempted_bss_desc;
+
+ nxpwifi_dbg(priv->adapter, INFO, "info: ASSOC_RESP: %s\n",
+ bss_desc->ssid.ssid);
+
+ /* Make a copy of current BSSID descriptor */
+ memcpy(&priv->curr_bss_params.bss_descriptor,
+ bss_desc, sizeof(struct nxpwifi_bssdescriptor));
+
+ /* Update curr_bss_params */
+ priv->curr_bss_params.bss_descriptor.channel =
+ bss_desc->phy_param_set.ds_param_set.current_chan;
+
+ priv->curr_bss_params.band = (u8)bss_desc->bss_band;
+
+ if (bss_desc->wmm_ie.element_id == WLAN_EID_VENDOR_SPECIFIC)
+ priv->curr_bss_params.wmm_enabled = true;
+ else
+ priv->curr_bss_params.wmm_enabled = false;
+
+ if ((priv->wmm_required || bss_desc->bcn_ht_cap) &&
+ priv->curr_bss_params.wmm_enabled)
+ priv->wmm_enabled = true;
+ else
+ priv->wmm_enabled = false;
+
+ priv->curr_bss_params.wmm_uapsd_enabled = false;
+
+ if (priv->wmm_enabled)
+ priv->curr_bss_params.wmm_uapsd_enabled =
+ ((bss_desc->wmm_ie.qos_info &
+ IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) ? 1 : 0);
+
+ /* Store the bandwidth information from assoc response */
+ ie_ptr = cfg80211_find_ie(WLAN_EID_HT_OPERATION, assoc_rsp->ie_buffer,
+ priv->assoc_rsp_size
+ - sizeof(struct ieee_types_assoc_rsp));
+ if (ie_ptr) {
+ assoc_resp_ht_oper = (struct ieee80211_ht_operation *)(ie_ptr
+ + sizeof(struct element));
+ priv->assoc_resp_ht_param = assoc_resp_ht_oper->ht_param;
+ priv->ht_param_present = true;
+ } else {
+ priv->ht_param_present = false;
+ }
+
+ nxpwifi_dbg(priv->adapter, INFO,
+ "info: ASSOC_RESP: curr_pkt_filter is %#x\n",
+ priv->curr_pkt_filter);
+ if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
+ priv->wpa_is_gtk_set = false;
+
+ if (priv->wmm_enabled) {
+ /* Don't re-enable carrier until we get the WMM_GET_STATUS
+ * event
+ */
+ enable_data = false;
+ } else {
+ /* Since WMM is not enabled, setup the queues with the
+ * defaults
+ */
+ nxpwifi_wmm_setup_queue_priorities(priv, NULL);
+ nxpwifi_wmm_setup_ac_downgrade(priv);
+ }
+
+ if (enable_data)
+ nxpwifi_dbg(priv->adapter, INFO,
+ "info: post association, re-enabling data flow\n");
+
+ /* Reset SNR/NF/RSSI values */
+ priv->data_rssi_last = 0;
+ priv->data_nf_last = 0;
+ priv->data_rssi_avg = 0;
+ priv->data_nf_avg = 0;
+ priv->bcn_rssi_last = 0;
+ priv->bcn_nf_last = 0;
+ priv->bcn_rssi_avg = 0;
+ priv->bcn_nf_avg = 0;
+ priv->rxpd_rate = 0;
+ priv->rxpd_htinfo = 0;
+
+ nxpwifi_save_curr_bcn(priv);
+
+ priv->adapter->dbg.num_cmd_assoc_success++;
+
+ nxpwifi_dbg(priv->adapter, MSG, "assoc: associated with %pM\n",
+ priv->attempted_bss_desc->mac_address);
+
+ /* Add the ra_list here for infra mode as there will be only 1 ra
+ * always
+ */
+ nxpwifi_ralist_add(priv,
+ priv->curr_bss_params.bss_descriptor.mac_address);
+
+ if (!netif_carrier_ok(priv->netdev))
+ netif_carrier_on(priv->netdev);
+ nxpwifi_wake_up_net_dev_queue(priv->netdev, adapter);
+
+ if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
+ priv->scan_block = true;
+ else
+ priv->port_open = true;
+
+done:
+ /* Need to indicate IOCTL complete */
+ if (adapter->curr_cmd->wait_q_enabled) {
+ if (ret)
+ adapter->cmd_wait_q.status = -1;
+ else
+ adapter->cmd_wait_q.status = 0;
+ }
+
+ return ret;
+}
+
+/* This function associates to a specific BSS discovered in a scan.
+ *
+ * It clears any past association response stored for application
+ * retrieval and calls the command preparation routine to send the
+ * command to firmware.
+ */
+int nxpwifi_associate(struct nxpwifi_private *priv,
+ struct nxpwifi_bssdescriptor *bss_desc)
+{
+ /* Return error if the adapter is not STA role or table entry
+ * is not marked as infra.
+ */
+ if ((GET_BSS_ROLE(priv) != NXPWIFI_BSS_ROLE_STA) ||
+ bss_desc->bss_mode != NL80211_IFTYPE_STATION)
+ return -EINVAL;
+
+ if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info) &&
+ !bss_desc->disable_11n && !bss_desc->disable_11ac &&
+ priv->adapter->config_bands & BAND_AAC)
+ nxpwifi_set_11ac_ba_params(priv);
+ else
+ nxpwifi_set_ba_params(priv);
+
+ /* Clear any past association response stored for application
+ * retrieval
+ */
+ priv->assoc_rsp_size = 0;
+
+ return nxpwifi_send_cmd(priv, HOST_CMD_802_11_ASSOCIATE,
+ HOST_ACT_GEN_SET, 0, bss_desc, true);
+}
+
+/* This function deauthenticates/disconnects from infra network by sending
+ * deauthentication request.
+ */
+static int nxpwifi_deauthenticate_infra(struct nxpwifi_private *priv, u8 *mac)
+{
+ u8 mac_address[ETH_ALEN];
+ int ret;
+
+ if (!mac || is_zero_ether_addr(mac))
+ memcpy(mac_address,
+ priv->curr_bss_params.bss_descriptor.mac_address,
+ ETH_ALEN);
+ else
+ memcpy(mac_address, mac, ETH_ALEN);
+
+ ret = nxpwifi_send_cmd(priv, HOST_CMD_802_11_DEAUTHENTICATE,
+ HOST_ACT_GEN_SET, 0, mac_address, true);
+
+ return ret;
+}
+
+/* This function deauthenticates/disconnects from a BSS.
+ *
+ * In case of infra made, it sends deauthentication request, and
+ * in case of ad-hoc mode, a stop network request is sent to the firmware.
+ * In AP mode, a command to stop bss is sent to firmware.
+ */
+int nxpwifi_deauthenticate(struct nxpwifi_private *priv, u8 *mac)
+{
+ int ret = 0;
+
+ if (!priv->media_connected)
+ return 0;
+
+ priv->auth_flag = 0;
+ priv->auth_alg = WLAN_AUTH_NONE;
+ priv->host_mlme_reg = false;
+ priv->mgmt_frame_mask = 0;
+
+ ret = nxpwifi_send_cmd(priv, HOST_CMD_MGMT_FRAME_REG,
+ HOST_ACT_GEN_SET, 0,
+ &priv->mgmt_frame_mask, false);
+ if (ret) {
+ nxpwifi_dbg(priv->adapter, ERROR,
+ "could not unregister mgmt frame rx\n");
+ return ret;
+ }
+
+ switch (priv->bss_mode) {
+ case NL80211_IFTYPE_STATION:
+ ret = nxpwifi_deauthenticate_infra(priv, mac);
+ if (ret)
+ cfg80211_disconnected(priv->netdev, 0, NULL, 0,
+ true, GFP_KERNEL);
+ break;
+ case NL80211_IFTYPE_AP:
+ ret = nxpwifi_send_cmd(priv, HOST_CMD_UAP_BSS_STOP,
+ HOST_ACT_GEN_SET, 0, NULL, true);
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+/* This function deauthenticates/disconnects from all BSS. */
+void nxpwifi_deauthenticate_all(struct nxpwifi_adapter *adapter)
+{
+ struct nxpwifi_private *priv;
+ int i;
+
+ for (i = 0; i < adapter->priv_num; i++) {
+ priv = adapter->priv[i];
+ if (priv)
+ nxpwifi_deauthenticate(priv, NULL);
+ }
+}
+EXPORT_SYMBOL_GPL(nxpwifi_deauthenticate_all);
+
+/* This function converts band to radio type used in channel TLV.
+ */
+u8
+nxpwifi_band_to_radio_type(u8 band)
+{
+ switch (band) {
+ case BAND_A:
+ case BAND_AN:
+ case BAND_A | BAND_AN:
+ case BAND_A | BAND_AN | BAND_AAC:
+ return HOST_SCAN_RADIO_TYPE_A;
+ case BAND_B:
+ case BAND_G:
+ case BAND_B | BAND_G:
+ default:
+ return HOST_SCAN_RADIO_TYPE_BG;
+ }
+}
--
2.34.1
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