516 lines
14 KiB
C
516 lines
14 KiB
C
/*
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* NXP Wireless LAN device driver: management IE handling- setting and
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* deleting IE.
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*
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* Copyright 2011-2020 NXP
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*
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* This software file (the "File") is distributed by NXP
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* under the terms of the GNU General Public License Version 2, June 1991
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* (the "License"). You may use, redistribute and/or modify this File in
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* accordance with the terms and conditions of the License, a copy of which
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* is available by writing to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
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* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
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*
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* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
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* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
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* this warranty disclaimer.
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*/
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#include "main.h"
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/* This function checks if current IE index is used by any on other interface.
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* Return: -1: yes, current IE index is used by someone else.
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* 0: no, current IE index is NOT used by other interface.
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*/
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static int
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mwifiex_ie_index_used_by_other_intf(struct mwifiex_private *priv, u16 idx)
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{
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int i;
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struct mwifiex_adapter *adapter = priv->adapter;
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struct mwifiex_ie *ie;
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for (i = 0; i < adapter->priv_num; i++) {
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if (adapter->priv[i] != priv) {
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ie = &adapter->priv[i]->mgmt_ie[idx];
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if (ie->mgmt_subtype_mask && ie->ie_length)
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return -1;
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}
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}
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return 0;
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}
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/* Get unused IE index. This index will be used for setting new IE */
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static int
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mwifiex_ie_get_autoidx(struct mwifiex_private *priv, u16 subtype_mask,
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struct mwifiex_ie *ie, u16 *index)
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{
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u16 mask, len, i;
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for (i = 0; i < priv->adapter->max_mgmt_ie_index; i++) {
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mask = le16_to_cpu(priv->mgmt_ie[i].mgmt_subtype_mask);
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len = le16_to_cpu(ie->ie_length);
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if (mask == MWIFIEX_AUTO_IDX_MASK)
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continue;
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if (mask == subtype_mask) {
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if (len > IEEE_MAX_IE_SIZE)
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continue;
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*index = i;
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return 0;
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}
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if (!priv->mgmt_ie[i].ie_length) {
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if (mwifiex_ie_index_used_by_other_intf(priv, i))
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continue;
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*index = i;
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return 0;
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}
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}
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return -1;
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}
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/* This function prepares IE data buffer for command to be sent to FW */
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static int
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mwifiex_update_autoindex_ies(struct mwifiex_private *priv,
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struct mwifiex_ie_list *ie_list)
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{
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u16 travel_len, index, mask;
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s16 input_len, tlv_len;
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struct mwifiex_ie *ie;
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u8 *tmp;
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input_len = le16_to_cpu(ie_list->len);
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travel_len = sizeof(struct mwifiex_ie_types_header);
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ie_list->len = 0;
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while (input_len >= sizeof(struct mwifiex_ie_types_header)) {
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ie = (struct mwifiex_ie *)(((u8 *)ie_list) + travel_len);
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tlv_len = le16_to_cpu(ie->ie_length);
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travel_len += tlv_len + MWIFIEX_IE_HDR_SIZE;
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if (input_len < tlv_len + MWIFIEX_IE_HDR_SIZE)
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return -1;
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index = le16_to_cpu(ie->ie_index);
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mask = le16_to_cpu(ie->mgmt_subtype_mask);
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if (index == MWIFIEX_AUTO_IDX_MASK) {
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/* automatic addition */
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if (mwifiex_ie_get_autoidx(priv, mask, ie, &index))
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return -1;
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if (index == MWIFIEX_AUTO_IDX_MASK)
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return -1;
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tmp = (u8 *)&priv->mgmt_ie[index].ie_buffer;
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memcpy(tmp, &ie->ie_buffer, le16_to_cpu(ie->ie_length));
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priv->mgmt_ie[index].ie_length = ie->ie_length;
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priv->mgmt_ie[index].ie_index = cpu_to_le16(index);
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priv->mgmt_ie[index].mgmt_subtype_mask =
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cpu_to_le16(mask);
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ie->ie_index = cpu_to_le16(index);
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} else {
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if (mask != MWIFIEX_DELETE_MASK)
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return -1;
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/*
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* Check if this index is being used on any
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* other interface.
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*/
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if (mwifiex_ie_index_used_by_other_intf(priv, index))
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return -1;
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ie->ie_length = 0;
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memcpy(&priv->mgmt_ie[index], ie,
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sizeof(struct mwifiex_ie));
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}
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le16_unaligned_add_cpu(&ie_list->len,
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le16_to_cpu(
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priv->mgmt_ie[index].ie_length) +
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MWIFIEX_IE_HDR_SIZE);
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input_len -= tlv_len + MWIFIEX_IE_HDR_SIZE;
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}
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if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP)
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return mwifiex_send_cmd(priv, HostCmd_CMD_UAP_SYS_CONFIG,
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HostCmd_ACT_GEN_SET,
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UAP_CUSTOM_IE_I, ie_list, true);
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return 0;
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}
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/* Copy individual custom IEs for beacon, probe response and assoc response
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* and prepare single structure for IE setting.
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* This function also updates allocated IE indices from driver.
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*/
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static int
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mwifiex_update_uap_custom_ie(struct mwifiex_private *priv,
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struct mwifiex_ie *beacon_ie, u16 *beacon_idx,
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struct mwifiex_ie *pr_ie, u16 *probe_idx,
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struct mwifiex_ie *ar_ie, u16 *assoc_idx)
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{
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struct mwifiex_ie_list *ap_custom_ie;
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u8 *pos;
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u16 len;
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int ret;
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ap_custom_ie = kzalloc(sizeof(*ap_custom_ie), GFP_KERNEL);
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if (!ap_custom_ie)
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return -ENOMEM;
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ap_custom_ie->type = cpu_to_le16(TLV_TYPE_MGMT_IE);
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pos = (u8 *)ap_custom_ie->ie_list;
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if (beacon_ie) {
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len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE +
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le16_to_cpu(beacon_ie->ie_length);
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memcpy(pos, beacon_ie, len);
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pos += len;
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le16_unaligned_add_cpu(&ap_custom_ie->len, len);
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}
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if (pr_ie) {
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len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE +
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le16_to_cpu(pr_ie->ie_length);
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memcpy(pos, pr_ie, len);
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pos += len;
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le16_unaligned_add_cpu(&ap_custom_ie->len, len);
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}
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if (ar_ie) {
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len = sizeof(struct mwifiex_ie) - IEEE_MAX_IE_SIZE +
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le16_to_cpu(ar_ie->ie_length);
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memcpy(pos, ar_ie, len);
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pos += len;
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le16_unaligned_add_cpu(&ap_custom_ie->len, len);
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}
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ret = mwifiex_update_autoindex_ies(priv, ap_custom_ie);
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pos = (u8 *)(&ap_custom_ie->ie_list[0].ie_index);
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if (beacon_ie && *beacon_idx == MWIFIEX_AUTO_IDX_MASK) {
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/* save beacon ie index after auto-indexing */
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*beacon_idx = le16_to_cpu(ap_custom_ie->ie_list[0].ie_index);
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len = sizeof(*beacon_ie) - IEEE_MAX_IE_SIZE +
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le16_to_cpu(beacon_ie->ie_length);
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pos += len;
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}
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if (pr_ie && le16_to_cpu(pr_ie->ie_index) == MWIFIEX_AUTO_IDX_MASK) {
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/* save probe resp ie index after auto-indexing */
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*probe_idx = *((u16 *)pos);
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len = sizeof(*pr_ie) - IEEE_MAX_IE_SIZE +
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le16_to_cpu(pr_ie->ie_length);
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pos += len;
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}
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if (ar_ie && le16_to_cpu(ar_ie->ie_index) == MWIFIEX_AUTO_IDX_MASK)
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/* save assoc resp ie index after auto-indexing */
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*assoc_idx = *((u16 *)pos);
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kfree(ap_custom_ie);
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return ret;
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}
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/* This function checks if the vendor specified IE is present in passed buffer
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* and copies it to mwifiex_ie structure.
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* Function takes pointer to struct mwifiex_ie pointer as argument.
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* If the vendor specified IE is present then memory is allocated for
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* mwifiex_ie pointer and filled in with IE. Caller should take care of freeing
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* this memory.
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*/
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static int mwifiex_update_vs_ie(const u8 *ies, int ies_len,
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struct mwifiex_ie **ie_ptr, u16 mask,
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unsigned int oui, u8 oui_type)
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{
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struct ieee_types_header *vs_ie;
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struct mwifiex_ie *ie = *ie_ptr;
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const u8 *vendor_ie;
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vendor_ie = cfg80211_find_vendor_ie(oui, oui_type, ies, ies_len);
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if (vendor_ie) {
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if (!*ie_ptr) {
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*ie_ptr = kzalloc(sizeof(struct mwifiex_ie),
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GFP_KERNEL);
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if (!*ie_ptr)
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return -ENOMEM;
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ie = *ie_ptr;
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}
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vs_ie = (struct ieee_types_header *)vendor_ie;
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if (le16_to_cpu(ie->ie_length) + vs_ie->len + 2 >
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IEEE_MAX_IE_SIZE)
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return -EINVAL;
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memcpy(ie->ie_buffer + le16_to_cpu(ie->ie_length),
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vs_ie, vs_ie->len + 2);
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le16_unaligned_add_cpu(&ie->ie_length, vs_ie->len + 2);
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ie->mgmt_subtype_mask = cpu_to_le16(mask);
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ie->ie_index = cpu_to_le16(MWIFIEX_AUTO_IDX_MASK);
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}
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*ie_ptr = ie;
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return 0;
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}
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/* This function parses beacon IEs, probe response IEs, association response IEs
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* from cfg80211_ap_settings->beacon and sets these IE to FW.
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*/
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static int mwifiex_set_mgmt_beacon_data_ies(struct mwifiex_private *priv,
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struct cfg80211_beacon_data *data)
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{
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struct mwifiex_ie *beacon_ie = NULL, *pr_ie = NULL, *ar_ie = NULL;
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u16 beacon_idx = MWIFIEX_AUTO_IDX_MASK, pr_idx = MWIFIEX_AUTO_IDX_MASK;
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u16 ar_idx = MWIFIEX_AUTO_IDX_MASK;
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int ret = 0;
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if (data->beacon_ies && data->beacon_ies_len) {
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mwifiex_update_vs_ie(data->beacon_ies, data->beacon_ies_len,
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&beacon_ie, MGMT_MASK_BEACON,
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WLAN_OUI_MICROSOFT,
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WLAN_OUI_TYPE_MICROSOFT_WPS);
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mwifiex_update_vs_ie(data->beacon_ies, data->beacon_ies_len,
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&beacon_ie, MGMT_MASK_BEACON,
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WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P);
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}
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if (data->proberesp_ies && data->proberesp_ies_len) {
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mwifiex_update_vs_ie(data->proberesp_ies,
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data->proberesp_ies_len, &pr_ie,
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MGMT_MASK_PROBE_RESP, WLAN_OUI_MICROSOFT,
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WLAN_OUI_TYPE_MICROSOFT_WPS);
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mwifiex_update_vs_ie(data->proberesp_ies,
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data->proberesp_ies_len, &pr_ie,
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MGMT_MASK_PROBE_RESP,
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WLAN_OUI_WFA, WLAN_OUI_TYPE_WFA_P2P);
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}
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if (data->assocresp_ies && data->assocresp_ies_len) {
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mwifiex_update_vs_ie(data->assocresp_ies,
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data->assocresp_ies_len, &ar_ie,
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MGMT_MASK_ASSOC_RESP |
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MGMT_MASK_REASSOC_RESP,
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WLAN_OUI_MICROSOFT,
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WLAN_OUI_TYPE_MICROSOFT_WPS);
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mwifiex_update_vs_ie(data->assocresp_ies,
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data->assocresp_ies_len, &ar_ie,
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MGMT_MASK_ASSOC_RESP |
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MGMT_MASK_REASSOC_RESP, WLAN_OUI_WFA,
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WLAN_OUI_TYPE_WFA_P2P);
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}
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if (beacon_ie || pr_ie || ar_ie) {
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ret = mwifiex_update_uap_custom_ie(priv, beacon_ie,
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&beacon_idx, pr_ie,
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&pr_idx, ar_ie, &ar_idx);
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if (ret)
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goto done;
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}
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priv->beacon_idx = beacon_idx;
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priv->proberesp_idx = pr_idx;
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priv->assocresp_idx = ar_idx;
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done:
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kfree(beacon_ie);
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kfree(pr_ie);
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kfree(ar_ie);
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return ret;
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}
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/* This function parses head and tail IEs, from cfg80211_beacon_data and sets
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* these IE to FW.
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*/
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static int mwifiex_uap_parse_tail_ies(struct mwifiex_private *priv,
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struct cfg80211_beacon_data *info)
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{
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struct mwifiex_ie *gen_ie;
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struct ieee_types_header *hdr;
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struct ieee80211_vendor_ie *vendorhdr;
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u16 gen_idx = MWIFIEX_AUTO_IDX_MASK, ie_len = 0;
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int left_len, parsed_len = 0;
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unsigned int token_len;
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int err = 0;
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if (!info->tail || !info->tail_len)
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return 0;
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gen_ie = kzalloc(sizeof(*gen_ie), GFP_KERNEL);
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if (!gen_ie)
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return -ENOMEM;
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left_len = info->tail_len;
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/* Many IEs are generated in FW by parsing bss configuration.
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* Let's not add them here; else we may end up duplicating these IEs
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*/
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while (left_len > sizeof(struct ieee_types_header)) {
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hdr = (void *)(info->tail + parsed_len);
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token_len = hdr->len + sizeof(struct ieee_types_header);
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if (token_len > left_len) {
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err = -EINVAL;
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goto out;
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}
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switch (hdr->element_id) {
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case WLAN_EID_SSID:
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case WLAN_EID_SUPP_RATES:
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case WLAN_EID_COUNTRY:
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case WLAN_EID_PWR_CONSTRAINT:
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case WLAN_EID_ERP_INFO:
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case WLAN_EID_EXT_SUPP_RATES:
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case WLAN_EID_HT_CAPABILITY:
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case WLAN_EID_HT_OPERATION:
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case WLAN_EID_VHT_CAPABILITY:
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case WLAN_EID_VHT_OPERATION:
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break;
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case WLAN_EID_VENDOR_SPECIFIC:
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/* Skip only Microsoft WMM IE */
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if (cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
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WLAN_OUI_TYPE_MICROSOFT_WMM,
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(const u8 *)hdr,
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token_len))
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break;
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fallthrough;
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default:
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if (ie_len + token_len > IEEE_MAX_IE_SIZE) {
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err = -EINVAL;
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goto out;
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}
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memcpy(gen_ie->ie_buffer + ie_len, hdr, token_len);
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ie_len += token_len;
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break;
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}
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left_len -= token_len;
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parsed_len += token_len;
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}
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/* parse only WPA vendor IE from tail, WMM IE is configured by
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* bss_config command
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*/
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vendorhdr = (void *)cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
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WLAN_OUI_TYPE_MICROSOFT_WPA,
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info->tail, info->tail_len);
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if (vendorhdr) {
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token_len = vendorhdr->len + sizeof(struct ieee_types_header);
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if (ie_len + token_len > IEEE_MAX_IE_SIZE) {
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err = -EINVAL;
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goto out;
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}
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memcpy(gen_ie->ie_buffer + ie_len, vendorhdr, token_len);
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ie_len += token_len;
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}
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if (!ie_len)
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goto out;
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gen_ie->ie_index = cpu_to_le16(gen_idx);
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gen_ie->mgmt_subtype_mask = cpu_to_le16(MGMT_MASK_BEACON |
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MGMT_MASK_PROBE_RESP |
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MGMT_MASK_ASSOC_RESP);
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gen_ie->ie_length = cpu_to_le16(ie_len);
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if (mwifiex_update_uap_custom_ie(priv, gen_ie, &gen_idx, NULL, NULL,
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NULL, NULL)) {
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err = -EINVAL;
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goto out;
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}
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priv->gen_idx = gen_idx;
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out:
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kfree(gen_ie);
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return err;
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}
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/* This function parses different IEs-head & tail IEs, beacon IEs,
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* probe response IEs, association response IEs from cfg80211_ap_settings
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* function and sets these IE to FW.
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*/
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int mwifiex_set_mgmt_ies(struct mwifiex_private *priv,
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struct cfg80211_beacon_data *info)
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{
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int ret;
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ret = mwifiex_uap_parse_tail_ies(priv, info);
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if (ret)
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return ret;
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return mwifiex_set_mgmt_beacon_data_ies(priv, info);
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}
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/* This function removes management IE set */
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int mwifiex_del_mgmt_ies(struct mwifiex_private *priv)
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{
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struct mwifiex_ie *beacon_ie = NULL, *pr_ie = NULL;
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struct mwifiex_ie *ar_ie = NULL, *gen_ie = NULL;
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int ret = 0;
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if (priv->gen_idx != MWIFIEX_AUTO_IDX_MASK) {
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gen_ie = kmalloc(sizeof(*gen_ie), GFP_KERNEL);
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if (!gen_ie)
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return -ENOMEM;
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gen_ie->ie_index = cpu_to_le16(priv->gen_idx);
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gen_ie->mgmt_subtype_mask = cpu_to_le16(MWIFIEX_DELETE_MASK);
|
|
gen_ie->ie_length = 0;
|
|
if (mwifiex_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 = MWIFIEX_AUTO_IDX_MASK;
|
|
}
|
|
|
|
if (priv->beacon_idx != MWIFIEX_AUTO_IDX_MASK) {
|
|
beacon_ie = kmalloc(sizeof(struct mwifiex_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(MWIFIEX_DELETE_MASK);
|
|
beacon_ie->ie_length = 0;
|
|
}
|
|
if (priv->proberesp_idx != MWIFIEX_AUTO_IDX_MASK) {
|
|
pr_ie = kmalloc(sizeof(struct mwifiex_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(MWIFIEX_DELETE_MASK);
|
|
pr_ie->ie_length = 0;
|
|
}
|
|
if (priv->assocresp_idx != MWIFIEX_AUTO_IDX_MASK) {
|
|
ar_ie = kmalloc(sizeof(struct mwifiex_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(MWIFIEX_DELETE_MASK);
|
|
ar_ie->ie_length = 0;
|
|
}
|
|
|
|
if (beacon_ie || pr_ie || ar_ie)
|
|
ret = mwifiex_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;
|
|
}
|