Signed-off-by: David Lin <yu-hao.lin@xxxxxxx>
---
drivers/net/wireless/nxp/nxpwifi/ie.c | 502 ++++++++++++++++++++++++++
1 file changed, 502 insertions(+)
create mode 100644 drivers/net/wireless/nxp/nxpwifi/ie.c
diff --git a/drivers/net/wireless/nxp/nxpwifi/ie.c b/drivers/net/wireless/nxp/nxpwifi/ie.c
new file mode 100644
index 000000000000..cfe16e68d068
--- /dev/null
+++ b/drivers/net/wireless/nxp/nxpwifi/ie.c
@@ -0,0 +1,502 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * NXP Wireless LAN device driver: management IE handling- setting and
+ * deleting IE.
+ *
+ * Copyright 2011-2024 NXP
+ */
+
+#include "main.h"
+#include "cmdevt.h"
+
+/* This function checks if current IE index is used by any on other interface.
+ * Return: -1: yes, current IE index is used by someone else.
+ * 0: no, current IE index is NOT used by other interface.
+ */
+static int
+nxpwifi_ie_index_used_by_other_intf(struct nxpwifi_private *priv, u16 idx)
+{
+ int i;
+ struct nxpwifi_adapter *adapter = priv->adapter;
+ struct nxpwifi_ie *ie;
+
+ for (i = 0; i < adapter->priv_num; i++) {
+ if (adapter->priv[i] != priv) {
+ ie = &adapter->priv[i]->mgmt_ie[idx];
+ if (ie->mgmt_subtype_mask && ie->ie_length)
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+/* Get unused IE index. This index will be used for setting new IE */
+static int
+nxpwifi_ie_get_autoidx(struct nxpwifi_private *priv, u16 subtype_mask,
+ struct nxpwifi_ie *ie, u16 *index)
+{
+ u16 mask, len, i;
+
+ for (i = 0; i < priv->adapter->max_mgmt_ie_index; i++) {
+ mask = le16_to_cpu(priv->mgmt_ie[i].mgmt_subtype_mask);
+ len = le16_to_cpu(ie->ie_length);
+
+ if (mask == NXPWIFI_AUTO_IDX_MASK)
+ continue;
+
+ if (mask == subtype_mask) {
+ if (len > IEEE_MAX_IE_SIZE)
+ continue;
+
+ *index = i;
+ return 0;
+ }
+
+ if (!priv->mgmt_ie[i].ie_length) {
+ if (nxpwifi_ie_index_used_by_other_intf(priv, i))
+ continue;
+
+ *index = i;
+ return 0;
+ }
+ }
+
+ return -1;
+}
+
+/* This function prepares IE data buffer for command to be sent to FW */
+static int
+nxpwifi_update_autoindex_ies(struct nxpwifi_private *priv,
+ struct nxpwifi_ie_list *ie_list)
+{
+ u16 travel_len, index, mask;
+ s16 input_len, tlv_len;
+ struct nxpwifi_ie *ie;
+ u8 *tmp;
+
+ input_len = le16_to_cpu(ie_list->len);
+ travel_len = sizeof(struct nxpwifi_ie_types_header);
+
+ ie_list->len = 0;
+
+ while (input_len >= sizeof(struct nxpwifi_ie_types_header)) {
+ ie = (struct nxpwifi_ie *)(((u8 *)ie_list) + travel_len);
+ tlv_len = le16_to_cpu(ie->ie_length);
+ travel_len += tlv_len + NXPWIFI_IE_HDR_SIZE;
+
+ if (input_len < tlv_len + NXPWIFI_IE_HDR_SIZE)
+ return -1;
+ index = le16_to_cpu(ie->ie_index);
+ mask = le16_to_cpu(ie->mgmt_subtype_mask);
+
+ if (index == NXPWIFI_AUTO_IDX_MASK) {
+ /* automatic addition */
+ if (nxpwifi_ie_get_autoidx(priv, mask, ie, &index))
+ return -1;
+ if (index == NXPWIFI_AUTO_IDX_MASK)
+ return -1;
+
+ tmp = (u8 *)&priv->mgmt_ie[index].ie_buffer;
+ memcpy(tmp, &ie->ie_buffer, le16_to_cpu(ie->ie_length));
+ priv->mgmt_ie[index].ie_length = ie->ie_length;
+ priv->mgmt_ie[index].ie_index = cpu_to_le16(index);
+ priv->mgmt_ie[index].mgmt_subtype_mask =
+ cpu_to_le16(mask);
+
+ ie->ie_index = cpu_to_le16(index);
+ } else {
+ if (mask != NXPWIFI_DELETE_MASK)
+ return -1;
+ /* Check if this index is being used on any
+ * other interface.
+ */
+ if (nxpwifi_ie_index_used_by_other_intf(priv, index))
+ return -1;
+
+ ie->ie_length = 0;
+ memcpy(&priv->mgmt_ie[index], ie,
+ sizeof(struct nxpwifi_ie));
+ }
+
+ le16_unaligned_add_cpu
+ (&ie_list->len,
+ le16_to_cpu(priv->mgmt_ie[index].ie_length) +
+ NXPWIFI_IE_HDR_SIZE);
+ input_len -= tlv_len + NXPWIFI_IE_HDR_SIZE;
+ }
+
+ if (GET_BSS_ROLE(priv) == NXPWIFI_BSS_ROLE_UAP)
+ return nxpwifi_send_cmd(priv, HOST_CMD_UAP_SYS_CONFIG,
+ HOST_ACT_GEN_SET,
+ UAP_CUSTOM_IE_I, ie_list, true);
+
+ return 0;
+}
+
+/* Copy individual custom IEs for beacon, probe response and assoc response
+ * and prepare single structure for IE setting.
+ * This function also updates allocated IE indices from driver.
+ */
+static int
+nxpwifi_update_uap_custom_ie(struct nxpwifi_private *priv,
+ struct nxpwifi_ie *beacon_ie, u16 *beacon_idx,
+ struct nxpwifi_ie *pr_ie, u16 *probe_idx,
+ struct nxpwifi_ie *ar_ie, u16 *assoc_idx)
+{
+ struct nxpwifi_ie_list *ap_custom_ie;
+ u8 *pos;
+ u16 len;
+ int ret;
+
+ ap_custom_ie = kzalloc(sizeof(*ap_custom_ie), GFP_KERNEL);
+ if (!ap_custom_ie)
+ return -ENOMEM;
+
+ ap_custom_ie->type = cpu_to_le16(TLV_TYPE_MGMT_IE);
+ pos = (u8 *)ap_custom_ie->ie_list;
+
+ if (beacon_ie) {
+ len = sizeof(struct nxpwifi_ie) - IEEE_MAX_IE_SIZE +
+ le16_to_cpu(beacon_ie->ie_length);
+ memcpy(pos, beacon_ie, len);
+ pos += len;
+ le16_unaligned_add_cpu(&ap_custom_ie->len, len);
+ }
+ if (pr_ie) {
+ len = sizeof(struct nxpwifi_ie) - IEEE_MAX_IE_SIZE +
+ le16_to_cpu(pr_ie->ie_length);
+ memcpy(pos, pr_ie, len);
+ pos += len;
+ le16_unaligned_add_cpu(&ap_custom_ie->len, len);
+ }
+ if (ar_ie) {
+ len = sizeof(struct nxpwifi_ie) - IEEE_MAX_IE_SIZE +
+ le16_to_cpu(ar_ie->ie_length);
+ memcpy(pos, ar_ie, len);
+ pos += len;
+ le16_unaligned_add_cpu(&ap_custom_ie->len, len);
+ }
+
+ ret = nxpwifi_update_autoindex_ies(priv, ap_custom_ie);
+
+ pos = (u8 *)(&ap_custom_ie->ie_list[0].ie_index);
+ if (beacon_ie && *beacon_idx == NXPWIFI_AUTO_IDX_MASK) {
+ /* save beacon ie index after auto-indexing */
+ *beacon_idx = le16_to_cpu(ap_custom_ie->ie_list[0].ie_index);
+ len = sizeof(*beacon_ie) - IEEE_MAX_IE_SIZE +
+ le16_to_cpu(beacon_ie->ie_length);
+ pos += len;
+ }
+ if (pr_ie && le16_to_cpu(pr_ie->ie_index) == NXPWIFI_AUTO_IDX_MASK) {
+ /* save probe resp ie index after auto-indexing */
+ *probe_idx = *((u16 *)pos);
+ len = sizeof(*pr_ie) - IEEE_MAX_IE_SIZE +
+ le16_to_cpu(pr_ie->ie_length);
+ pos += len;
+ }
+ if (ar_ie && le16_to_cpu(ar_ie->ie_index) == NXPWIFI_AUTO_IDX_MASK)
+ /* save assoc resp ie index after auto-indexing */
+ *assoc_idx = *((u16 *)pos);
+
+ kfree(ap_custom_ie);
+ return ret;
+}
+
+/* This function checks if the vendor specified IE is present in passed buffer
+ * and copies it to nxpwifi_ie structure.
+ * Function takes pointer to struct nxpwifi_ie pointer as argument.
+ * If the vendor specified IE is present then memory is allocated for
+ * nxpwifi_ie pointer and filled in with IE. Caller should take care of freeing
+ * this memory.
+ */
+static int nxpwifi_update_vs_ie(const u8 *ies, int ies_len,
+ struct nxpwifi_ie **ie_ptr, u16 mask,
+ unsigned int oui, u8 oui_type)
+{
+ struct ieee_types_header *vs_ie;
+ struct nxpwifi_ie *ie = *ie_ptr;
+ const u8 *vendor_ie;
+
+ vendor_ie = cfg80211_find_vendor_ie(oui, oui_type, ies, ies_len);
+ if (vendor_ie) {
+ if (!*ie_ptr) {
+ *ie_ptr = kzalloc(sizeof(*ie_ptr), GFP_KERNEL);
+ if (!*ie_ptr)
+ return -ENOMEM;
+ ie = *ie_ptr;
+ }
+
+ vs_ie = (struct ieee_types_header *)vendor_ie;
+ if (le16_to_cpu(ie->ie_length) + vs_ie->len + 2 >
+ IEEE_MAX_IE_SIZE)
+ return -EINVAL;
+ memcpy(ie->ie_buffer + le16_to_cpu(ie->ie_length),
+ vs_ie, vs_ie->len + 2);
+ le16_unaligned_add_cpu(&ie->ie_length, vs_ie->len + 2);
+ ie->mgmt_subtype_mask = cpu_to_le16(mask);
+ ie->ie_index = cpu_to_le16(NXPWIFI_AUTO_IDX_MASK);
+ }
+
+ *ie_ptr = ie;
+ return 0;
+}
+
+/* This function parses beacon IEs, probe response IEs, association response IEs
+ * from cfg80211_ap_settings->beacon and sets these IE to FW.
+ */
+static int nxpwifi_set_mgmt_beacon_data_ies(struct nxpwifi_private *priv,
+ struct cfg80211_beacon_data *data)
+{
+ struct nxpwifi_ie *beacon_ie = NULL, *pr_ie = NULL, *ar_ie = NULL;
+ u16 beacon_idx = NXPWIFI_AUTO_IDX_MASK, pr_idx = NXPWIFI_AUTO_IDX_MASK;
+ u16 ar_idx = NXPWIFI_AUTO_IDX_MASK;
+ int ret = 0;
+
+ if (data->beacon_ies && data->beacon_ies_len) {
+ nxpwifi_update_vs_ie(data->beacon_ies, data->beacon_ies_len,
+ &beacon_ie, MGMT_MASK_BEACON,
+ WLAN_OUI_MICROSOFT,
+ WLAN_OUI_TYPE_MICROSOFT_WPS);
+ nxpwifi_update_vs_ie(data->beacon_ies, data->beacon_ies_len,
+ &beacon_ie, MGMT_MASK_BEACON,
+ WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P);
+ }
+
+ if (data->proberesp_ies && data->proberesp_ies_len) {
+ nxpwifi_update_vs_ie(data->proberesp_ies,
+ data->proberesp_ies_len, &pr_ie,
+ MGMT_MASK_PROBE_RESP, WLAN_OUI_MICROSOFT,
+ WLAN_OUI_TYPE_MICROSOFT_WPS);
+ nxpwifi_update_vs_ie(data->proberesp_ies,
+ data->proberesp_ies_len, &pr_ie,
+ MGMT_MASK_PROBE_RESP,
+ WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P);
+ }
+
+ if (data->assocresp_ies && data->assocresp_ies_len) {
+ nxpwifi_update_vs_ie(data->assocresp_ies,
+ data->assocresp_ies_len, &ar_ie,
+ MGMT_MASK_ASSOC_RESP |
+ MGMT_MASK_REASSOC_RESP,
+ WLAN_OUI_MICROSOFT,
+ WLAN_OUI_TYPE_MICROSOFT_WPS);
+ nxpwifi_update_vs_ie(data->assocresp_ies,
+ data->assocresp_ies_len, &ar_ie,
+ MGMT_MASK_ASSOC_RESP |
+ MGMT_MASK_REASSOC_RESP, WLAN_OUI_WFA,
+ WLAN_OUI_TYPE_WFA_P2P);
+ }
+
+ if (beacon_ie || pr_ie || ar_ie) {
+ ret = nxpwifi_update_uap_custom_ie(priv, beacon_ie,
+ &beacon_idx, pr_ie,
+ &pr_idx, ar_ie, &ar_idx);
+ if (ret)
+ goto done;
+ }
+
+ priv->beacon_idx = beacon_idx;
+ priv->proberesp_idx = pr_idx;
+ priv->assocresp_idx = ar_idx;
+
+done:
+ kfree(beacon_ie);
+ kfree(pr_ie);
+ kfree(ar_ie);
+
+ return ret;
+}
+
+/* This function parses head and tail IEs, from cfg80211_beacon_data and sets
+ * these IE to FW.
+ */
+static int nxpwifi_uap_parse_tail_ies(struct nxpwifi_private *priv,
+ struct cfg80211_beacon_data *info)
+{
+ struct nxpwifi_ie *gen_ie;
+ struct ieee_types_header *hdr;
+ struct ieee80211_vendor_ie *vendorhdr;
+ u16 gen_idx = NXPWIFI_AUTO_IDX_MASK, ie_len = 0;
+ int left_len, parsed_len = 0;
+ unsigned int token_len;
+ int err = 0;
+
+ if (!info->tail || !info->tail_len)
+ return 0;
+
+ gen_ie = kzalloc(sizeof(*gen_ie), GFP_KERNEL);
+ if (!gen_ie)
+ return -ENOMEM;
+
+ left_len = info->tail_len;
+
+ /* Many IEs are generated in FW by parsing bss configuration.
+ * Let's not add them here; else we may end up duplicating these IEs
+ */
+ while (left_len > sizeof(struct ieee_types_header)) {
+ hdr = (void *)(info->tail + parsed_len);
+ token_len = hdr->len + sizeof(struct ieee_types_header);
+ if (token_len > left_len) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ switch (hdr->element_id) {
+ case WLAN_EID_SSID:
+ case WLAN_EID_SUPP_RATES:
+ case WLAN_EID_COUNTRY:
+ case WLAN_EID_PWR_CONSTRAINT:
+ case WLAN_EID_ERP_INFO:
+ case WLAN_EID_EXT_SUPP_RATES:
+ case WLAN_EID_HT_CAPABILITY:
+ case WLAN_EID_HT_OPERATION:
+ case WLAN_EID_VHT_CAPABILITY:
+ case WLAN_EID_VHT_OPERATION:
+ break;
+ case WLAN_EID_VENDOR_SPECIFIC:
+ /* Skip only Microsoft WMM IE */
+ if (cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
+ WLAN_OUI_TYPE_MICROSOFT_WMM,
+ (const u8 *)hdr,
+ token_len))
+ break;
+ fallthrough;
+ default:
+ if (ie_len + token_len > IEEE_MAX_IE_SIZE) {
+ err = -EINVAL;
+ goto out;
+ }
+ memcpy(gen_ie->ie_buffer + ie_len, hdr, token_len);
+ ie_len += token_len;
+ break;
+ }
+ left_len -= token_len;
+ parsed_len += token_len;
+ }
+
+ /* parse only WPA vendor IE from tail, WMM IE is configured by
+ * bss_config command
+ */
+ vendorhdr = (void *)cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
+ WLAN_OUI_TYPE_MICROSOFT_WPA,
+ info->tail, info->tail_len);
+ if (vendorhdr) {
+ token_len = vendorhdr->len + sizeof(struct ieee_types_header);
+ if (ie_len + token_len > IEEE_MAX_IE_SIZE) {
+ err = -EINVAL;
+ goto out;
+ }
+ memcpy(gen_ie->ie_buffer + ie_len, vendorhdr, token_len);
+ ie_len += token_len;
+ }
+
+ if (!ie_len)
+ goto out;
+
+ gen_ie->ie_index = cpu_to_le16(gen_idx);
+ gen_ie->mgmt_subtype_mask = cpu_to_le16(MGMT_MASK_BEACON |
+ MGMT_MASK_PROBE_RESP |
+ MGMT_MASK_ASSOC_RESP);
+ gen_ie->ie_length = cpu_to_le16(ie_len);
+
+ if (nxpwifi_update_uap_custom_ie(priv, gen_ie, &gen_idx, NULL, NULL,
+ NULL, NULL)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ priv->gen_idx = gen_idx;
+
+ out:
+ kfree(gen_ie);
+ return err;
+}
+
+/* This function parses different IEs-head & tail IEs, beacon IEs,
+ * probe response IEs, association response IEs from cfg80211_ap_settings
+ * function and sets these IE to FW.
+ */
+int nxpwifi_set_mgmt_ies(struct nxpwifi_private *priv,
+ struct cfg80211_beacon_data *info)
+{
+ int ret;
+
+ ret = nxpwifi_uap_parse_tail_ies(priv, info);
+
+ if (ret)
+ return ret;
+
+ return nxpwifi_set_mgmt_beacon_data_ies(priv, info);
+}
+
+/* This function removes management IE set */
+int nxpwifi_del_mgmt_ies(struct nxpwifi_private *priv)
+{
+ struct nxpwifi_ie *beacon_ie = NULL, *pr_ie = NULL;
+ struct nxpwifi_ie *ar_ie = NULL, *gen_ie = NULL;
+ int ret = 0;
+
+ if (priv->gen_idx != NXPWIFI_AUTO_IDX_MASK) {
+ gen_ie = kmalloc(sizeof(*gen_ie), GFP_KERNEL);
+ if (!gen_ie)
+ return -ENOMEM;
+
+ gen_ie->ie_index = cpu_to_le16(priv->gen_idx);
+ gen_ie->mgmt_subtype_mask = cpu_to_le16(NXPWIFI_DELETE_MASK);
+ gen_ie->ie_length = 0;
+ if (nxpwifi_update_uap_custom_ie(priv, gen_ie, &priv->gen_idx,
+ NULL, &priv->proberesp_idx,
+ NULL, &priv->assocresp_idx)) {
+ ret = -1;
+ goto done;
+ }
+
+ priv->gen_idx = NXPWIFI_AUTO_IDX_MASK;
+ }
+
+ if (priv->beacon_idx != NXPWIFI_AUTO_IDX_MASK) {
+ beacon_ie = kmalloc(sizeof(*beacon_ie), GFP_KERNEL);
+ if (!beacon_ie) {
+ ret = -ENOMEM;
+ goto done;
+ }
+ beacon_ie->ie_index = cpu_to_le16(priv->beacon_idx);
+ beacon_ie->mgmt_subtype_mask = cpu_to_le16(NXPWIFI_DELETE_MASK);
+ beacon_ie->ie_length = 0;
+ }
+ if (priv->proberesp_idx != NXPWIFI_AUTO_IDX_MASK) {
+ pr_ie = kmalloc(sizeof(*pr_ie), GFP_KERNEL);
+ if (!pr_ie) {
+ ret = -ENOMEM;
+ goto done;
+ }
+ pr_ie->ie_index = cpu_to_le16(priv->proberesp_idx);
+ pr_ie->mgmt_subtype_mask = cpu_to_le16(NXPWIFI_DELETE_MASK);
+ pr_ie->ie_length = 0;
+ }
+ if (priv->assocresp_idx != NXPWIFI_AUTO_IDX_MASK) {
+ ar_ie = kmalloc(sizeof(*ar_ie), GFP_KERNEL);
+ if (!ar_ie) {
+ ret = -ENOMEM;
+ goto done;
+ }
+ ar_ie->ie_index = cpu_to_le16(priv->assocresp_idx);
+ ar_ie->mgmt_subtype_mask = cpu_to_le16(NXPWIFI_DELETE_MASK);
+ ar_ie->ie_length = 0;
+ }
+
+ if (beacon_ie || pr_ie || ar_ie)
+ ret = nxpwifi_update_uap_custom_ie(priv,
+ beacon_ie, &priv->beacon_idx,
+ pr_ie, &priv->proberesp_idx,
+ ar_ie, &priv->assocresp_idx);
+
+done:
+ kfree(gen_ie);
+ kfree(beacon_ie);
+ kfree(pr_ie);
+ kfree(ar_ie);
+
+ return ret;
+}
--
2.34.1
