diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mei/sap.h')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mei/sap.h | 733 |
1 files changed, 733 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mei/sap.h b/drivers/net/wireless/intel/iwlwifi/mei/sap.h new file mode 100644 index 000000000000..11e3009121cc --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/mei/sap.h @@ -0,0 +1,733 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2021 Intel Corporation + */ + +#ifndef __sap_h__ +#define __sap_h__ + +#include "mei/iwl-mei.h" + +/** + * DOC: Introduction + * + * SAP is the protocol used by the Intel Wireless driver (iwlwifi) + * and the wireless driver implemented in the CSME firmware. + * It allows to do several things: + * 1) Decide who is the owner of the device: CSME or the host + * 2) When the host is the owner of the device, CSME can still + * send and receive packets through iwlwifi. + * + * The protocol uses the ME interface (mei driver) to send + * messages to the CSME firmware. Those messages have a header + * &struct iwl_sap_me_msg_hdr and this header is followed + * by a payload. + * + * Since this messaging system cannot support high amounts of + * traffic, iwlwifi and the CSME firmware's WLAN driver have an + * addtional communication pipe to exchange information. The body + * of the message is copied to a shared area and the message that + * goes over the ME interface just signals the other side + * that a new message is waiting in the shared area. The ME + * interface is used only for signaling and not to transfer + * the payload. + * + * This shared area of memory is DMA'able mapped to be + * writable by both the CSME firmware and iwlwifi. It is + * mapped to address space of the device that controls the ME + * interface's DMA engine. Any data that iwlwifi needs to + * send to the CSME firmware needs to be copied to there. + */ + +/** + * DOC: Initial Handshake + * + * Once we get a link to the CMSE's WLAN driver we start the handshake + * to establish the shared memory that will allow the communication between + * the CSME's WLAN driver and the host. + * + * 1) Host sends %SAP_ME_MSG_START message with the physical address + * of the shared area. + * 2) CSME replies with %SAP_ME_MSG_START_OK which includes the versions + * protocol versions supported by CSME. + */ + +/** + * DOC: Host and driver state messages + * + * In order to let CSME konw about the host state and the host driver state, + * the host sends messages that let CSME know about the host's state. + * When the host driver is loaded, the host sends %SAP_MSG_NOTIF_WIFIDR_UP. + * When the host driver is unloaded, the host sends %SAP_MSG_NOTIF_WIFIDR_DOWN. + * When the iwlmei is unloaded, %SAP_MSG_NOTIF_HOST_GOES_DOWN is sent to let + * CSME know not to access the shared memory anymore since it'll be freed. + * + * CSME will reply to SAP_MSG_NOTIF_WIFIDR_UP by + * %SAP_MSG_NOTIF_AMT_STATE to let the host driver whether CSME can use the + * WiFi device or not followed by %SAP_MSG_NOTIF_CSME_CONN_STATUS to inform + * the host driver on the connection state of CSME. + * + * When host is associated to an AP, it must send %SAP_MSG_NOTIF_HOST_LINK_UP + * and when it disconnect from the AP, it must send + * %SAP_MSG_NOTIF_HOST_LINK_DOWN. + */ + +/** + * DOC: Ownership + * + * The device can be controlled either by the CSME firmware or + * by the host driver: iwlwifi. There is a negotiaion between + * those two entities to determine who controls (or owns) the + * device. Since the CSME can control the device even when the + * OS is not working or even missing, the CSME can request the + * device if it comes to the conclusion that the OS's host driver + * is not operational. This is why the host driver needs to + * signal CSME that it is up and running. If the driver is + * unloaded, it'll signal CSME that it is going down so that + * CSME can take ownership. + */ + +/** + * DOC: Ownership transfer + * + * When the host driver needs the device, it'll send the + * %SAP_MSG_NOTIF_HOST_ASKS_FOR_NIC_OWNERSHIP that will be replied by + * %SAP_MSG_NOTIF_CSME_REPLY_TO_HOST_OWNERSHIP_REQ which will let the + * host know whether the ownership is granted or no. If the ownership is + * granted, the hosts sends %SAP_MSG_NOTIF_HOST_OWNERSHIP_CONFIRMED. + * + * When CSME requests ownership, it'll send the + * %SAP_MSG_NOTIF_CSME_TAKING_OWNERSHIP and give some time to host to stop + * accessing the device. The host needs to send + * %SAP_MSG_NOTIF_CSME_OWNERSHIP_CONFIRMED to confirm that it won't access + * the device anymore. If the host failed to send this message fast enough, + * CSME will take ownership on the device anyway. + * When CSME is willing to release the ownership, it'll send + * %SAP_MSG_NOTIF_CSME_CAN_RELEASE_OWNERSHIP. + */ + +/** + * DOC: Data messages + * + * Data messages must be sent and receives on a separate queue in the shared + * memory. Almost all the data messages use the %SAP_MSG_DATA_PACKET for both + * packets sent by CSME to the host to be sent to the AP or for packets + * received from the AP and sent by the host to CSME. + * CSME sends filters to the host to let the host what inbound packets it must + * send to CSME. Those filters are received by the host as a + * %SAP_MSG_NOTIF_CSME_FILTERS command. + * The only outbound packets that must be sent to CSME are the DHCP packets. + * Those packets must use the %SAP_MSG_CB_DATA_PACKET message. + */ + +/** + * enum iwl_sap_me_msg_id - the ID of the ME message + * @SAP_ME_MSG_START: See &struct iwl_sap_me_msg_start. + * @SAP_ME_MSG_START_OK: See &struct iwl_sap_me_msg_start_ok. + * @SAP_ME_MSG_CHECK_SHARED_AREA: This message has no payload. + */ +enum iwl_sap_me_msg_id { + SAP_ME_MSG_START = 1, + SAP_ME_MSG_START_OK, + SAP_ME_MSG_CHECK_SHARED_AREA, +}; + +/** + * struct iwl_sap_me_msg_hdr - the header of the ME message + * @type: the type of the message, see &enum iwl_sap_me_msg_id. + * @seq_num: a sequence number used for debug only. + * @len: the length of the mssage. + */ +struct iwl_sap_me_msg_hdr { + __le32 type; + __le32 seq_num; + __le32 len; +} __packed; + +/** + * struct iwl_sap_me_msg_start - used for the %SAP_ME_MSG_START message + * @hdr: See &struct iwl_sap_me_msg_hdr. + * @shared_mem: physical address of SAP shared memory area. + * @init_data_seq_num: seq_num of the first data packet HOST -> CSME. + * @init_notif_seq_num: seq_num of the first notification HOST -> CSME. + * @supported_versions: The host sends to the CSME a zero-terminated array + * of versions its supports. + * + * This message is sent by the host to CSME and will responded by the + * %SAP_ME_MSG_START_OK message. + */ +struct iwl_sap_me_msg_start { + struct iwl_sap_me_msg_hdr hdr; + __le64 shared_mem; + __le16 init_data_seq_num; + __le16 init_notif_seq_num; + u8 supported_versions[64]; +} __packed; + +/** + * struct iwl_sap_me_msg_start_ok - used for the %SAP_ME_MSG_START_OK + * @hdr: See &struct iwl_sap_me_msg_hdr + * @init_data_seq_num: Not used. + * @init_notif_seq_num: Not used + * @supported_version: The version that will be used. + * @reserved: For alignment. + * + * This message is sent by CSME to the host in response to the + * %SAP_ME_MSG_START message. + */ +struct iwl_sap_me_msg_start_ok { + struct iwl_sap_me_msg_hdr hdr; + __le16 init_data_seq_num; + __le16 init_notif_seq_num; + u8 supported_version; + u8 reserved[3]; +} __packed; + +/** + * enum iwl_sap_msg - SAP messages + * @SAP_MSG_NOTIF_BOTH_WAYS_MIN: Not used. + * @SAP_MSG_NOTIF_PING: No payload. Solicitate a response message (check-alive). + * @SAP_MSG_NOTIF_PONG: No payload. The response message. + * @SAP_MSG_NOTIF_BOTH_WAYS_MAX: Not used. + * + * @SAP_MSG_NOTIF_FROM_CSME_MIN: Not used. + * @SAP_MSG_NOTIF_CSME_FILTERS: TODO + * @SAP_MSG_NOTIF_AMT_STATE: Payload is a DW. Any non-zero value means + * that CSME is enabled. + * @SAP_MSG_NOTIF_CSME_REPLY_TO_HOST_OWNERSHIP_REQ: Payload is a DW. 0 means + * the host will not get ownership. Any other value means the host is + * the owner. + * @SAP_MSG_NOTIF_CSME_TAKING_OWNERSHIP: No payload. + * @SAP_MSG_NOTIF_TRIGGER_IP_REFRESH: No payload. + * @SAP_MSG_NOTIF_CSME_CAN_RELEASE_OWNERSHIP: No payload. + * @SAP_MSG_NOTIF_NIC_OWNER: Payload is a DW. See &enum iwl_sap_nic_owner. + * @SAP_MSG_NOTIF_CSME_CONN_STATUS: See &struct iwl_sap_notif_conn_status. + * @SAP_MSG_NOTIF_NVM: See &struct iwl_sap_nvm. + * @SAP_MSG_NOTIF_FROM_CSME_MAX: Not used. + * + * @SAP_MSG_NOTIF_FROM_HOST_MIN: Not used. + * @SAP_MSG_NOTIF_BAND_SELECTION: TODO + * @SAP_MSG_NOTIF_RADIO_STATE: Payload is a DW. + * See &enum iwl_sap_radio_state_bitmap. + * @SAP_MSG_NOTIF_NIC_INFO: See &struct iwl_sap_notif_host_nic_info. + * @SAP_MSG_NOTIF_HOST_ASKS_FOR_NIC_OWNERSHIP: No payload. + * @SAP_MSG_NOTIF_HOST_SUSPENDS: Payload is a DW. Bitmap described in + * &enum iwl_sap_notif_host_suspends_bitmap. + * @SAP_MSG_NOTIF_HOST_RESUMES: Payload is a DW. 0 or 1. 1 says that + * the CSME should re-initialize the init control block. + * @SAP_MSG_NOTIF_HOST_GOES_DOWN: No payload. + * @SAP_MSG_NOTIF_CSME_OWNERSHIP_CONFIRMED: No payload. + * @SAP_MSG_NOTIF_COUNTRY_CODE: See &struct iwl_sap_notif_country_code. + * @SAP_MSG_NOTIF_HOST_LINK_UP: See &struct iwl_sap_notif_host_link_up. + * @SAP_MSG_NOTIF_HOST_LINK_DOWN: See &struct iwl_sap_notif_host_link_down. + * @SAP_MSG_NOTIF_WHO_OWNS_NIC: No payload. + * @SAP_MSG_NOTIF_WIFIDR_DOWN: No payload. + * @SAP_MSG_NOTIF_WIFIDR_UP: No payload. + * @SAP_MSG_NOTIF_HOST_OWNERSHIP_CONFIRMED: No payload. + * @SAP_MSG_NOTIF_SAR_LIMITS: See &struct iwl_sap_notif_sar_limits. + * @SAP_MSG_NOTIF_GET_NVM: No payload. Triggers %SAP_MSG_NOTIF_NVM. + * @SAP_MSG_NOTIF_FROM_HOST_MAX: Not used. + * + * @SAP_MSG_DATA_MIN: Not used. + * @SAP_MSG_DATA_PACKET: Packets that passed the filters defined by + * %SAP_MSG_NOTIF_CSME_FILTERS. The payload is &struct iwl_sap_hdr with + * the payload of the packet immediately afterwards. + * @SAP_MSG_CB_DATA_PACKET: Indicates to CSME that we transmitted a specific + * packet. Used only for DHCP transmitted packets. See + * &struct iwl_sap_cb_data. + * @SAP_MSG_DATA_MAX: Not used. + */ +enum iwl_sap_msg { + SAP_MSG_NOTIF_BOTH_WAYS_MIN = 0, + SAP_MSG_NOTIF_PING = 1, + SAP_MSG_NOTIF_PONG = 2, + SAP_MSG_NOTIF_BOTH_WAYS_MAX, + + SAP_MSG_NOTIF_FROM_CSME_MIN = 500, + SAP_MSG_NOTIF_CSME_FILTERS = SAP_MSG_NOTIF_FROM_CSME_MIN, + /* 501 is deprecated */ + SAP_MSG_NOTIF_AMT_STATE = 502, + SAP_MSG_NOTIF_CSME_REPLY_TO_HOST_OWNERSHIP_REQ = 503, + SAP_MSG_NOTIF_CSME_TAKING_OWNERSHIP = 504, + SAP_MSG_NOTIF_TRIGGER_IP_REFRESH = 505, + SAP_MSG_NOTIF_CSME_CAN_RELEASE_OWNERSHIP = 506, + /* 507 is deprecated */ + /* 508 is deprecated */ + /* 509 is deprecated */ + /* 510 is deprecated */ + SAP_MSG_NOTIF_NIC_OWNER = 511, + SAP_MSG_NOTIF_CSME_CONN_STATUS = 512, + SAP_MSG_NOTIF_NVM = 513, + SAP_MSG_NOTIF_FROM_CSME_MAX, + + SAP_MSG_NOTIF_FROM_HOST_MIN = 1000, + SAP_MSG_NOTIF_BAND_SELECTION = SAP_MSG_NOTIF_FROM_HOST_MIN, + SAP_MSG_NOTIF_RADIO_STATE = 1001, + SAP_MSG_NOTIF_NIC_INFO = 1002, + SAP_MSG_NOTIF_HOST_ASKS_FOR_NIC_OWNERSHIP = 1003, + SAP_MSG_NOTIF_HOST_SUSPENDS = 1004, + SAP_MSG_NOTIF_HOST_RESUMES = 1005, + SAP_MSG_NOTIF_HOST_GOES_DOWN = 1006, + SAP_MSG_NOTIF_CSME_OWNERSHIP_CONFIRMED = 1007, + SAP_MSG_NOTIF_COUNTRY_CODE = 1008, + SAP_MSG_NOTIF_HOST_LINK_UP = 1009, + SAP_MSG_NOTIF_HOST_LINK_DOWN = 1010, + SAP_MSG_NOTIF_WHO_OWNS_NIC = 1011, + SAP_MSG_NOTIF_WIFIDR_DOWN = 1012, + SAP_MSG_NOTIF_WIFIDR_UP = 1013, + /* 1014 is deprecated */ + SAP_MSG_NOTIF_HOST_OWNERSHIP_CONFIRMED = 1015, + SAP_MSG_NOTIF_SAR_LIMITS = 1016, + SAP_MSG_NOTIF_GET_NVM = 1017, + SAP_MSG_NOTIF_FROM_HOST_MAX, + + SAP_MSG_DATA_MIN = 2000, + SAP_MSG_DATA_PACKET = SAP_MSG_DATA_MIN, + SAP_MSG_CB_DATA_PACKET = 2001, + SAP_MSG_DATA_MAX, +}; + +/** + * struct iwl_sap_hdr - prefixes any SAP message + * @type: See &enum iwl_sap_msg. + * @len: The length of the message (header not included). + * @seq_num: For debug. + * @payload: The payload of the message. + */ +struct iwl_sap_hdr { + __le16 type; + __le16 len; + __le32 seq_num; + u8 payload[0]; +}; + +/** + * struct iwl_sap_msg_dw - suits any DW long SAP message + * @hdr: The SAP header + * @val: The value of the DW. + */ +struct iwl_sap_msg_dw { + struct iwl_sap_hdr hdr; + __le32 val; +}; + +/** + * enum iwl_sap_nic_owner - used by %SAP_MSG_NOTIF_NIC_OWNER + * @SAP_NIC_OWNER_UNKNOWN: Not used. + * @SAP_NIC_OWNER_HOST: The host owns the NIC. + * @SAP_NIC_OWNER_ME: CSME owns the NIC. + */ +enum iwl_sap_nic_owner { + SAP_NIC_OWNER_UNKNOWN, + SAP_NIC_OWNER_HOST, + SAP_NIC_OWNER_ME, +}; + +enum iwl_sap_wifi_auth_type { + SAP_WIFI_AUTH_TYPE_OPEN = IWL_MEI_AKM_AUTH_OPEN, + SAP_WIFI_AUTH_TYPE_RSNA = IWL_MEI_AKM_AUTH_RSNA, + SAP_WIFI_AUTH_TYPE_RSNA_PSK = IWL_MEI_AKM_AUTH_RSNA_PSK, + SAP_WIFI_AUTH_TYPE_SAE = IWL_MEI_AKM_AUTH_SAE, + SAP_WIFI_AUTH_TYPE_MAX, +}; + +/** + * enum iwl_sap_wifi_cipher_alg + * @SAP_WIFI_CIPHER_ALG_NONE: TBD + * @SAP_WIFI_CIPHER_ALG_CCMP: TBD + * @SAP_WIFI_CIPHER_ALG_GCMP: TBD + * @SAP_WIFI_CIPHER_ALG_GCMP_256: TBD + */ +enum iwl_sap_wifi_cipher_alg { + SAP_WIFI_CIPHER_ALG_NONE = IWL_MEI_CIPHER_NONE, + SAP_WIFI_CIPHER_ALG_CCMP = IWL_MEI_CIPHER_CCMP, + SAP_WIFI_CIPHER_ALG_GCMP = IWL_MEI_CIPHER_GCMP, + SAP_WIFI_CIPHER_ALG_GCMP_256 = IWL_MEI_CIPHER_GCMP_256, +}; + +/** + * struct iwl_sap_notif_connection_info - nested in other structures + * @ssid_len: The length of the SSID. + * @ssid: The SSID. + * @auth_mode: The authentication mode. See &enum iwl_sap_wifi_auth_type. + * @pairwise_cipher: The cipher used for unicast packets. + * See &enum iwl_sap_wifi_cipher_alg. + * @channel: The channel on which we are associated. + * @band: The band on which we are associated. + * @reserved: For alignment. + * @bssid: The BSSID. + * @reserved1: For alignment. + */ +struct iwl_sap_notif_connection_info { + __le32 ssid_len; + u8 ssid[32]; + __le32 auth_mode; + __le32 pairwise_cipher; + u8 channel; + u8 band; + __le16 reserved; + u8 bssid[6]; + __le16 reserved1; +} __packed; + +/** + * enum iwl_sap_scan_request - for the scan_request field + * @SCAN_REQUEST_FILTERING: Filtering is requested. + * @SCAN_REQUEST_FAST: Fast scan is requested. + */ +enum iwl_sap_scan_request { + SCAN_REQUEST_FILTERING = 1 << 0, + SCAN_REQUEST_FAST = 1 << 1, +}; + +/** + * struct iwl_sap_notif_conn_status - payload of %SAP_MSG_NOTIF_CSME_CONN_STATUS + * @hdr: The SAP header + * @link_prot_state: Non-zero if link protection is active. + * @scan_request: See &enum iwl_sap_scan_request. + * @conn_info: Information about the connection. + */ +struct iwl_sap_notif_conn_status { + struct iwl_sap_hdr hdr; + __le32 link_prot_state; + __le32 scan_request; + struct iwl_sap_notif_connection_info conn_info; +} __packed; + +/** + * enum iwl_sap_radio_state_bitmap - used for %SAP_MSG_NOTIF_RADIO_STATE + * @SAP_SW_RFKILL_DEASSERTED: If set, SW RfKill is de-asserted + * @SAP_HW_RFKILL_DEASSERTED: If set, HW RfKill is de-asserted + * + * If both bits are set, then the radio is on. + */ +enum iwl_sap_radio_state_bitmap { + SAP_SW_RFKILL_DEASSERTED = 1 << 0, + SAP_HW_RFKILL_DEASSERTED = 1 << 1, +}; + +/** + * enum iwl_sap_notif_host_suspends_bitmap - used for %SAP_MSG_NOTIF_HOST_SUSPENDS + * @SAP_OFFER_NIC: TBD + * @SAP_FILTER_CONFIGURED: TBD + * @SAP_NLO_CONFIGURED: TBD + * @SAP_HOST_OWNS_NIC: TBD + * @SAP_LINK_PROTECTED: TBD + */ +enum iwl_sap_notif_host_suspends_bitmap { + SAP_OFFER_NIC = 1 << 0, + SAP_FILTER_CONFIGURED = 1 << 1, + SAP_NLO_CONFIGURED = 1 << 2, + SAP_HOST_OWNS_NIC = 1 << 3, + SAP_LINK_PROTECTED = 1 << 4, +}; + +/** + * struct iwl_sap_notif_country_code - payload of %SAP_MSG_NOTIF_COUNTRY_CODE + * @hdr: The SAP header + * @mcc: The country code. + * @source_id: TBD + * @reserved: For alignment. + * @diff_time: TBD + */ +struct iwl_sap_notif_country_code { + struct iwl_sap_hdr hdr; + __le16 mcc; + u8 source_id; + u8 reserved; + __le32 diff_time; +} __packed; + +/** + * struct iwl_sap_notif_host_link_up - payload of %SAP_MSG_NOTIF_HOST_LINK_UP + * @hdr: The SAP header + * @conn_info: Information about the connection. + * @colloc_channel: The collocated channel + * @colloc_band: The band of the collocated channel. + * @reserved: For alignment. + * @colloc_bssid: The collocated BSSID. + * @reserved1: For alignment. + */ +struct iwl_sap_notif_host_link_up { + struct iwl_sap_hdr hdr; + struct iwl_sap_notif_connection_info conn_info; + u8 colloc_channel; + u8 colloc_band; + __le16 reserved; + u8 colloc_bssid[6]; + __le16 reserved1; +} __packed; + +/** + * enum iwl_sap_notif_link_down_type - used in &struct iwl_sap_notif_host_link_down + * @HOST_LINK_DOWN_TYPE_NONE: TBD + * @HOST_LINK_DOWN_TYPE_TEMPORARY: TBD + * @HOST_LINK_DOWN_TYPE_LONG: TBD + */ +enum iwl_sap_notif_link_down_type { + HOST_LINK_DOWN_TYPE_NONE, + HOST_LINK_DOWN_TYPE_TEMPORARY, + HOST_LINK_DOWN_TYPE_LONG, +}; + +/** + * struct iwl_sap_notif_host_link_down - payload for %SAP_MSG_NOTIF_HOST_LINK_DOWN + * @hdr: The SAP header + * @type: See &enum iwl_sap_notif_link_down_type. + * @reserved: For alignment. + * @reason_valid: If 0, ignore the next field. + * @reason: The reason of the disconnection. + */ +struct iwl_sap_notif_host_link_down { + struct iwl_sap_hdr hdr; + u8 type; + u8 reserved[2]; + u8 reason_valid; + __le32 reason; +} __packed; + +/** + * struct iwl_sap_notif_host_nic_info - payload for %SAP_MSG_NOTIF_NIC_INFO + * @hdr: The SAP header + * @mac_address: The MAC address as configured to the interface. + * @nvm_address: The MAC address as configured in the NVM. + */ +struct iwl_sap_notif_host_nic_info { + struct iwl_sap_hdr hdr; + u8 mac_address[6]; + u8 nvm_address[6]; +} __packed; + +/** + * struct iwl_sap_notif_dw - payload is a dw + * @hdr: The SAP header. + * @dw: The payload. + */ +struct iwl_sap_notif_dw { + struct iwl_sap_hdr hdr; + __le32 dw; +} __packed; + +/** + * struct iwl_sap_notif_sar_limits - payload for %SAP_MSG_NOTIF_SAR_LIMITS + * @hdr: The SAP header + * @sar_chain_info_table: Tx power limits. + */ +struct iwl_sap_notif_sar_limits { + struct iwl_sap_hdr hdr; + __le16 sar_chain_info_table[2][5]; +} __packed; + +/** + * enum iwl_sap_nvm_caps - capabilities for NVM SAP + * @SAP_NVM_CAPS_LARI_SUPPORT: Lari is supported + * @SAP_NVM_CAPS_11AX_SUPPORT: 11AX is supported + */ +enum iwl_sap_nvm_caps { + SAP_NVM_CAPS_LARI_SUPPORT = BIT(0), + SAP_NVM_CAPS_11AX_SUPPORT = BIT(1), +}; + +/** + * struct iwl_sap_nvm - payload for %SAP_MSG_NOTIF_NVM + * @hdr: The SAP header. + * @hw_addr: The MAC address + * @n_hw_addrs: The number of MAC addresses + * @reserved: For alignment. + * @radio_cfg: The radio configuration. + * @caps: See &enum iwl_sap_nvm_caps. + * @nvm_version: The version of the NVM. + * @channels: The data for each channel. + */ +struct iwl_sap_nvm { + struct iwl_sap_hdr hdr; + u8 hw_addr[6]; + u8 n_hw_addrs; + u8 reserved; + __le32 radio_cfg; + __le32 caps; + __le32 nvm_version; + __le32 channels[110]; +} __packed; + +/** + * enum iwl_sap_eth_filter_flags - used in &struct iwl_sap_eth_filter + * @SAP_ETH_FILTER_STOP: Do not process further filters. + * @SAP_ETH_FILTER_COPY: Copy the packet to the CSME. + * @SAP_ETH_FILTER_ENABLED: If false, the filter should be ignored. + */ +enum iwl_sap_eth_filter_flags { + SAP_ETH_FILTER_STOP = BIT(0), + SAP_ETH_FILTER_COPY = BIT(1), + SAP_ETH_FILTER_ENABLED = BIT(2), +}; + +/** + * struct iwl_sap_eth_filter - a L2 filter + * @mac_address: Address to filter. + * @flags: See &enum iwl_sap_eth_filter_flags. + */ +struct iwl_sap_eth_filter { + u8 mac_address[6]; + u8 flags; +} __packed; + +/** + * enum iwl_sap_flex_filter_flags - used in &struct iwl_sap_flex_filter + * @SAP_FLEX_FILTER_COPY: Pass UDP / TCP packets to CSME. + * @SAP_FLEX_FILTER_ENABLED: If false, the filter should be ignored. + * @SAP_FLEX_FILTER_IPV4: Filter requires match on the IP address as well. + * @SAP_FLEX_FILTER_IPV6: Filter requires match on the IP address as well. + * @SAP_FLEX_FILTER_TCP: Filter should be applied on TCP packets. + * @SAP_FLEX_FILTER_UDP: Filter should be applied on UDP packets. + */ +enum iwl_sap_flex_filter_flags { + SAP_FLEX_FILTER_COPY = BIT(0), + SAP_FLEX_FILTER_ENABLED = BIT(1), + SAP_FLEX_FILTER_IPV6 = BIT(2), + SAP_FLEX_FILTER_IPV4 = BIT(3), + SAP_FLEX_FILTER_TCP = BIT(4), + SAP_FLEX_FILTER_UDP = BIT(5), +}; + +/** + * struct iwl_sap_flex_filter - + * @src_port: Source port in network format. + * @dst_port: Destination port in network format. + * @flags: Flags and protocol, see &enum iwl_sap_flex_filter_flags. + * @reserved: For alignment. + */ +struct iwl_sap_flex_filter { + __be16 src_port; + __be16 dst_port; + u8 flags; + u8 reserved; +} __packed; + +/** + * enum iwl_sap_ipv4_filter_flags - used in &struct iwl_sap_ipv4_filter + * @SAP_IPV4_FILTER_ICMP_PASS: Pass ICMP packets to CSME. + * @SAP_IPV4_FILTER_ICMP_COPY: Pass ICMP packets to host. + * @SAP_IPV4_FILTER_ARP_REQ_PASS: Pass ARP requests to CSME. + * @SAP_IPV4_FILTER_ARP_REQ_COPY: Pass ARP requests to host. + * @SAP_IPV4_FILTER_ARP_RESP_PASS: Pass ARP responses to CSME. + * @SAP_IPV4_FILTER_ARP_RESP_COPY: Pass ARP responses to host. + */ +enum iwl_sap_ipv4_filter_flags { + SAP_IPV4_FILTER_ICMP_PASS = BIT(0), + SAP_IPV4_FILTER_ICMP_COPY = BIT(1), + SAP_IPV4_FILTER_ARP_REQ_PASS = BIT(2), + SAP_IPV4_FILTER_ARP_REQ_COPY = BIT(3), + SAP_IPV4_FILTER_ARP_RESP_PASS = BIT(4), + SAP_IPV4_FILTER_ARP_RESP_COPY = BIT(5), +}; + +/** + * struct iwl_sap_ipv4_filter- + * @ipv4_addr: The IP address to filer. + * @flags: See &enum iwl_sap_ipv4_filter_flags. + */ +struct iwl_sap_ipv4_filter { + __be32 ipv4_addr; + __le32 flags; +} __packed; + +/** + * enum iwl_sap_ipv6_filter_flags - + * @SAP_IPV6_ADDR_FILTER_COPY: Pass packets to the host. + * @SAP_IPV6_ADDR_FILTER_ENABLED: If false, the filter should be ignored. + */ +enum iwl_sap_ipv6_filter_flags { + SAP_IPV6_ADDR_FILTER_COPY = BIT(0), + SAP_IPV6_ADDR_FILTER_ENABLED = BIT(1), +}; + +/** + * struct iwl_sap_ipv6_filter - + * @addr_lo24: Lowest 24 bits of the IPv6 address. + * @flags: See &enum iwl_sap_ipv6_filter_flags. + */ +struct iwl_sap_ipv6_filter { + u8 addr_lo24[3]; + u8 flags; +} __packed; + +/** + * enum iwl_sap_icmpv6_filter_flags - + * @SAP_ICMPV6_FILTER_ENABLED: If false, the filter should be ignored. + * @SAP_ICMPV6_FILTER_COPY: Pass packets to the host. + */ +enum iwl_sap_icmpv6_filter_flags { + SAP_ICMPV6_FILTER_ENABLED = BIT(0), + SAP_ICMPV6_FILTER_COPY = BIT(1), +}; + +/** + * enum iwl_sap_vlan_filter_flags - + * @SAP_VLAN_FILTER_VLAN_ID_MSK: TBD + * @SAP_VLAN_FILTER_ENABLED: If false, the filter should be ignored. + */ +enum iwl_sap_vlan_filter_flags { + SAP_VLAN_FILTER_VLAN_ID_MSK = 0x0FFF, + SAP_VLAN_FILTER_ENABLED = BIT(15), +}; + +/** + * struct iwl_sap_oob_filters - Out of band filters (for RX only) + * @flex_filters: Array of &struct iwl_sap_flex_filter. + * @icmpv6_flags: See &enum iwl_sap_icmpv6_filter_flags. + * @ipv6_filters: Array of &struct iwl_sap_ipv6_filter. + * @eth_filters: Array of &struct iwl_sap_eth_filter. + * @reserved: For alignment. + * @ipv4_filter: &struct iwl_sap_ipv4_filter. + * @vlan: See &enum iwl_sap_vlan_filter_flags. + */ +struct iwl_sap_oob_filters { + struct iwl_sap_flex_filter flex_filters[14]; + __le32 icmpv6_flags; + struct iwl_sap_ipv6_filter ipv6_filters[4]; + struct iwl_sap_eth_filter eth_filters[5]; + u8 reserved; + struct iwl_sap_ipv4_filter ipv4_filter; + __le16 vlan[4]; +} __packed; + +/** + * struct iwl_sap_csme_filters - payload of %SAP_MSG_NOTIF_CSME_FILTERS + * @hdr: The SAP header. + * @mode: Not used. + * @mac_address: Not used. + * @reserved: For alignment. + * @cbfilters: Not used. + * @filters: Out of band filters. + */ +struct iwl_sap_csme_filters { + struct iwl_sap_hdr hdr; + __le32 mode; + u8 mac_address[6]; + __le16 reserved; + u8 cbfilters[1728]; + struct iwl_sap_oob_filters filters; +} __packed; + +#define CB_TX_DHCP_FILT_IDX 30 +/** + * struct iwl_sap_cb_data - header to be added for transmitted packets. + * @hdr: The SAP header. + * @reserved: Not used. + * @to_me_filt_status: The filter that matches. Bit %CB_TX_DHCP_FILT_IDX should + * be set for DHCP (the only packet that uses this header). + * @reserved2: Not used. + * @data_len: The length of the payload. + * @payload: The payload of the transmitted packet. + */ +struct iwl_sap_cb_data { + struct iwl_sap_hdr hdr; + __le32 reserved[7]; + __le32 to_me_filt_status; + __le32 reserved2; + __le32 data_len; + u8 payload[]; +}; + +#endif /* __sap_h__ */ |