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2542 lines
72 KiB
2542 lines
72 KiB
// SPDX-License-Identifier: ISC |
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/* |
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* Copyright (c) 2012 Broadcom Corporation |
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*/ |
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#include <linux/slab.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/rtnetlink.h> |
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#include <net/cfg80211.h> |
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#include <brcmu_wifi.h> |
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#include <brcmu_utils.h> |
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#include <defs.h> |
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#include "core.h" |
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#include "debug.h" |
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#include "fwil.h" |
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#include "fwil_types.h" |
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#include "p2p.h" |
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#include "cfg80211.h" |
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#include "feature.h" |
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/* parameters used for p2p escan */ |
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#define P2PAPI_SCAN_NPROBES 1 |
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#define P2PAPI_SCAN_DWELL_TIME_MS 80 |
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#define P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS 40 |
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#define P2PAPI_SCAN_HOME_TIME_MS 60 |
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#define P2PAPI_SCAN_NPROBS_TIME_MS 30 |
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#define P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS 100 |
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#define WL_SCAN_CONNECT_DWELL_TIME_MS 200 |
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#define WL_SCAN_JOIN_PROBE_INTERVAL_MS 20 |
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#define BRCMF_P2P_WILDCARD_SSID "DIRECT-" |
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#define BRCMF_P2P_WILDCARD_SSID_LEN (sizeof(BRCMF_P2P_WILDCARD_SSID) - 1) |
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#define SOCIAL_CHAN_1 1 |
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#define SOCIAL_CHAN_2 6 |
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#define SOCIAL_CHAN_3 11 |
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#define IS_P2P_SOCIAL_CHANNEL(channel) ((channel == SOCIAL_CHAN_1) || \ |
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(channel == SOCIAL_CHAN_2) || \ |
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(channel == SOCIAL_CHAN_3)) |
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#define BRCMF_P2P_TEMP_CHAN SOCIAL_CHAN_3 |
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#define SOCIAL_CHAN_CNT 3 |
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#define AF_PEER_SEARCH_CNT 2 |
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#define BRCMF_SCB_TIMEOUT_VALUE 20 |
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#define P2P_VER 9 /* P2P version: 9=WiFi P2P v1.0 */ |
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#define P2P_PUB_AF_CATEGORY 0x04 |
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#define P2P_PUB_AF_ACTION 0x09 |
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#define P2P_AF_CATEGORY 0x7f |
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#define P2P_OUI "\x50\x6F\x9A" /* P2P OUI */ |
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#define P2P_OUI_LEN 3 /* P2P OUI length */ |
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/* Action Frame Constants */ |
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#define DOT11_ACTION_HDR_LEN 2 /* action frame category + action */ |
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#define DOT11_ACTION_CAT_OFF 0 /* category offset */ |
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#define DOT11_ACTION_ACT_OFF 1 /* action offset */ |
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#define P2P_AF_DWELL_TIME 200 |
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#define P2P_AF_MIN_DWELL_TIME 100 |
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#define P2P_AF_MED_DWELL_TIME 400 |
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#define P2P_AF_LONG_DWELL_TIME 1000 |
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#define P2P_AF_TX_MAX_RETRY 5 |
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#define P2P_AF_MAX_WAIT_TIME msecs_to_jiffies(2000) |
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#define P2P_INVALID_CHANNEL -1 |
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#define P2P_CHANNEL_SYNC_RETRY 5 |
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#define P2P_AF_FRM_SCAN_MAX_WAIT msecs_to_jiffies(450) |
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#define P2P_DEFAULT_SLEEP_TIME_VSDB 200 |
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#define P2P_AF_RETRY_DELAY_TIME 40 |
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/* WiFi P2P Public Action Frame OUI Subtypes */ |
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#define P2P_PAF_GON_REQ 0 /* Group Owner Negotiation Req */ |
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#define P2P_PAF_GON_RSP 1 /* Group Owner Negotiation Rsp */ |
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#define P2P_PAF_GON_CONF 2 /* Group Owner Negotiation Confirm */ |
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#define P2P_PAF_INVITE_REQ 3 /* P2P Invitation Request */ |
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#define P2P_PAF_INVITE_RSP 4 /* P2P Invitation Response */ |
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#define P2P_PAF_DEVDIS_REQ 5 /* Device Discoverability Request */ |
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#define P2P_PAF_DEVDIS_RSP 6 /* Device Discoverability Response */ |
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#define P2P_PAF_PROVDIS_REQ 7 /* Provision Discovery Request */ |
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#define P2P_PAF_PROVDIS_RSP 8 /* Provision Discovery Response */ |
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#define P2P_PAF_SUBTYPE_INVALID 255 /* Invalid Subtype */ |
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/* WiFi P2P Action Frame OUI Subtypes */ |
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#define P2P_AF_NOTICE_OF_ABSENCE 0 /* Notice of Absence */ |
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#define P2P_AF_PRESENCE_REQ 1 /* P2P Presence Request */ |
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#define P2P_AF_PRESENCE_RSP 2 /* P2P Presence Response */ |
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#define P2P_AF_GO_DISC_REQ 3 /* GO Discoverability Request */ |
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/* P2P Service Discovery related */ |
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#define P2PSD_ACTION_CATEGORY 0x04 /* Public action frame */ |
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#define P2PSD_ACTION_ID_GAS_IREQ 0x0a /* GAS Initial Request AF */ |
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#define P2PSD_ACTION_ID_GAS_IRESP 0x0b /* GAS Initial Response AF */ |
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#define P2PSD_ACTION_ID_GAS_CREQ 0x0c /* GAS Comback Request AF */ |
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#define P2PSD_ACTION_ID_GAS_CRESP 0x0d /* GAS Comback Response AF */ |
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#define BRCMF_P2P_DISABLE_TIMEOUT msecs_to_jiffies(500) |
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/* Mask for retry counter of custom dwell time */ |
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#define CUSTOM_RETRY_MASK 0xff000000 |
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/** |
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* struct brcmf_p2p_disc_st_le - set discovery state in firmware. |
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* |
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* @state: requested discovery state (see enum brcmf_p2p_disc_state). |
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* @chspec: channel parameter for %WL_P2P_DISC_ST_LISTEN state. |
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* @dwell: dwell time in ms for %WL_P2P_DISC_ST_LISTEN state. |
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*/ |
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struct brcmf_p2p_disc_st_le { |
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u8 state; |
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__le16 chspec; |
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__le16 dwell; |
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}; |
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/** |
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* enum brcmf_p2p_disc_state - P2P discovery state values |
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* |
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* @WL_P2P_DISC_ST_SCAN: P2P discovery with wildcard SSID and P2P IE. |
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* @WL_P2P_DISC_ST_LISTEN: P2P discovery off-channel for specified time. |
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* @WL_P2P_DISC_ST_SEARCH: P2P discovery with P2P wildcard SSID and P2P IE. |
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*/ |
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enum brcmf_p2p_disc_state { |
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WL_P2P_DISC_ST_SCAN, |
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WL_P2P_DISC_ST_LISTEN, |
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WL_P2P_DISC_ST_SEARCH |
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}; |
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/** |
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* struct brcmf_p2p_scan_le - P2P specific scan request. |
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* |
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* @type: type of scan method requested (values: 'E' or 'S'). |
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* @reserved: reserved (ignored). |
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* @eparams: parameters used for type 'E'. |
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* @sparams: parameters used for type 'S'. |
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*/ |
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struct brcmf_p2p_scan_le { |
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u8 type; |
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u8 reserved[3]; |
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union { |
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struct brcmf_escan_params_le eparams; |
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struct brcmf_scan_params_le sparams; |
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}; |
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}; |
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/** |
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* struct brcmf_p2p_pub_act_frame - WiFi P2P Public Action Frame |
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* |
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* @category: P2P_PUB_AF_CATEGORY |
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* @action: P2P_PUB_AF_ACTION |
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* @oui: P2P_OUI |
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* @oui_type: OUI type - P2P_VER |
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* @subtype: OUI subtype - P2P_TYPE_* |
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* @dialog_token: nonzero, identifies req/rsp transaction |
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* @elts: Variable length information elements. |
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*/ |
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struct brcmf_p2p_pub_act_frame { |
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u8 category; |
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u8 action; |
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u8 oui[3]; |
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u8 oui_type; |
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u8 subtype; |
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u8 dialog_token; |
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u8 elts[1]; |
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}; |
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/** |
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* struct brcmf_p2p_action_frame - WiFi P2P Action Frame |
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* |
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* @category: P2P_AF_CATEGORY |
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* @oui: OUI - P2P_OUI |
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* @type: OUI Type - P2P_VER |
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* @subtype: OUI Subtype - P2P_AF_* |
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* @dialog_token: nonzero, identifies req/resp tranaction |
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* @elts: Variable length information elements. |
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*/ |
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struct brcmf_p2p_action_frame { |
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u8 category; |
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u8 oui[3]; |
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u8 type; |
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u8 subtype; |
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u8 dialog_token; |
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u8 elts[1]; |
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}; |
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/** |
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* struct brcmf_p2psd_gas_pub_act_frame - Wi-Fi GAS Public Action Frame |
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* |
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* @category: 0x04 Public Action Frame |
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* @action: 0x6c Advertisement Protocol |
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* @dialog_token: nonzero, identifies req/rsp transaction |
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* @query_data: Query Data. SD gas ireq SD gas iresp |
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*/ |
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struct brcmf_p2psd_gas_pub_act_frame { |
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u8 category; |
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u8 action; |
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u8 dialog_token; |
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u8 query_data[1]; |
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}; |
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/** |
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* struct brcmf_config_af_params - Action Frame Parameters for tx. |
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* |
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* @mpc_onoff: To make sure to send successfully action frame, we have to |
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* turn off mpc 0: off, 1: on, (-1): do nothing |
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* @search_channel: 1: search peer's channel to send af |
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* @extra_listen: keep the dwell time to get af response frame. |
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*/ |
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struct brcmf_config_af_params { |
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s32 mpc_onoff; |
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bool search_channel; |
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bool extra_listen; |
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}; |
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/** |
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* brcmf_p2p_is_pub_action() - true if p2p public type frame. |
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* |
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* @frame: action frame data. |
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* @frame_len: length of action frame data. |
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* |
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* Determine if action frame is p2p public action type |
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*/ |
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static bool brcmf_p2p_is_pub_action(void *frame, u32 frame_len) |
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{ |
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struct brcmf_p2p_pub_act_frame *pact_frm; |
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if (frame == NULL) |
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return false; |
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pact_frm = (struct brcmf_p2p_pub_act_frame *)frame; |
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if (frame_len < sizeof(struct brcmf_p2p_pub_act_frame) - 1) |
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return false; |
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if (pact_frm->category == P2P_PUB_AF_CATEGORY && |
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pact_frm->action == P2P_PUB_AF_ACTION && |
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pact_frm->oui_type == P2P_VER && |
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memcmp(pact_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0) |
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return true; |
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return false; |
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} |
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/** |
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* brcmf_p2p_is_p2p_action() - true if p2p action type frame. |
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* |
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* @frame: action frame data. |
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* @frame_len: length of action frame data. |
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* |
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* Determine if action frame is p2p action type |
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*/ |
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static bool brcmf_p2p_is_p2p_action(void *frame, u32 frame_len) |
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{ |
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struct brcmf_p2p_action_frame *act_frm; |
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if (frame == NULL) |
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return false; |
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act_frm = (struct brcmf_p2p_action_frame *)frame; |
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if (frame_len < sizeof(struct brcmf_p2p_action_frame) - 1) |
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return false; |
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if (act_frm->category == P2P_AF_CATEGORY && |
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act_frm->type == P2P_VER && |
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memcmp(act_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0) |
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return true; |
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return false; |
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} |
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/** |
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* brcmf_p2p_is_gas_action() - true if p2p gas action type frame. |
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* |
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* @frame: action frame data. |
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* @frame_len: length of action frame data. |
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* |
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* Determine if action frame is p2p gas action type |
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*/ |
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static bool brcmf_p2p_is_gas_action(void *frame, u32 frame_len) |
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{ |
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struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; |
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if (frame == NULL) |
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return false; |
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sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; |
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if (frame_len < sizeof(struct brcmf_p2psd_gas_pub_act_frame) - 1) |
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return false; |
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if (sd_act_frm->category != P2PSD_ACTION_CATEGORY) |
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return false; |
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if (sd_act_frm->action == P2PSD_ACTION_ID_GAS_IREQ || |
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sd_act_frm->action == P2PSD_ACTION_ID_GAS_IRESP || |
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sd_act_frm->action == P2PSD_ACTION_ID_GAS_CREQ || |
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sd_act_frm->action == P2PSD_ACTION_ID_GAS_CRESP) |
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return true; |
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return false; |
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} |
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/** |
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* brcmf_p2p_print_actframe() - debug print routine. |
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* |
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* @tx: Received or to be transmitted |
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* @frame: action frame data. |
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* @frame_len: length of action frame data. |
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* |
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* Print information about the p2p action frame |
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*/ |
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#ifdef DEBUG |
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static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len) |
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{ |
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struct brcmf_p2p_pub_act_frame *pact_frm; |
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struct brcmf_p2p_action_frame *act_frm; |
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struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; |
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if (!frame || frame_len <= 2) |
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return; |
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if (brcmf_p2p_is_pub_action(frame, frame_len)) { |
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pact_frm = (struct brcmf_p2p_pub_act_frame *)frame; |
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switch (pact_frm->subtype) { |
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case P2P_PAF_GON_REQ: |
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brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Req Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_PAF_GON_RSP: |
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brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Rsp Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_PAF_GON_CONF: |
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brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Confirm Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_PAF_INVITE_REQ: |
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brcmf_dbg(TRACE, "%s P2P Invitation Request Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_PAF_INVITE_RSP: |
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brcmf_dbg(TRACE, "%s P2P Invitation Response Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_PAF_DEVDIS_REQ: |
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brcmf_dbg(TRACE, "%s P2P Device Discoverability Request Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_PAF_DEVDIS_RSP: |
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brcmf_dbg(TRACE, "%s P2P Device Discoverability Response Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_PAF_PROVDIS_REQ: |
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brcmf_dbg(TRACE, "%s P2P Provision Discovery Request Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_PAF_PROVDIS_RSP: |
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brcmf_dbg(TRACE, "%s P2P Provision Discovery Response Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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default: |
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brcmf_dbg(TRACE, "%s Unknown P2P Public Action Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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} |
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} else if (brcmf_p2p_is_p2p_action(frame, frame_len)) { |
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act_frm = (struct brcmf_p2p_action_frame *)frame; |
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switch (act_frm->subtype) { |
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case P2P_AF_NOTICE_OF_ABSENCE: |
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brcmf_dbg(TRACE, "%s P2P Notice of Absence Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_AF_PRESENCE_REQ: |
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brcmf_dbg(TRACE, "%s P2P Presence Request Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_AF_PRESENCE_RSP: |
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brcmf_dbg(TRACE, "%s P2P Presence Response Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2P_AF_GO_DISC_REQ: |
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brcmf_dbg(TRACE, "%s P2P Discoverability Request Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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default: |
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brcmf_dbg(TRACE, "%s Unknown P2P Action Frame\n", |
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(tx) ? "TX" : "RX"); |
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} |
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} else if (brcmf_p2p_is_gas_action(frame, frame_len)) { |
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sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; |
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switch (sd_act_frm->action) { |
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case P2PSD_ACTION_ID_GAS_IREQ: |
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brcmf_dbg(TRACE, "%s P2P GAS Initial Request\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2PSD_ACTION_ID_GAS_IRESP: |
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brcmf_dbg(TRACE, "%s P2P GAS Initial Response\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2PSD_ACTION_ID_GAS_CREQ: |
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brcmf_dbg(TRACE, "%s P2P GAS Comback Request\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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case P2PSD_ACTION_ID_GAS_CRESP: |
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brcmf_dbg(TRACE, "%s P2P GAS Comback Response\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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default: |
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brcmf_dbg(TRACE, "%s Unknown P2P GAS Frame\n", |
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(tx) ? "TX" : "RX"); |
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break; |
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} |
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} |
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} |
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#else |
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static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len) |
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{ |
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} |
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#endif |
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|
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/** |
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* brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation. |
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* |
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* @ifp: ifp to use for iovars (primary). |
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* @p2p_mac: mac address to configure for p2p_da_override |
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*/ |
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static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac) |
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{ |
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struct brcmf_pub *drvr = ifp->drvr; |
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s32 ret = 0; |
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brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1); |
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brcmf_fil_iovar_int_set(ifp, "apsta", 1); |
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brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1); |
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|
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/* In case of COB type, firmware has default mac address |
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* After Initializing firmware, we have to set current mac address to |
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* firmware for P2P device address. This must be done with discovery |
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* disabled. |
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*/ |
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brcmf_fil_iovar_int_set(ifp, "p2p_disc", 0); |
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|
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ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac, |
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ETH_ALEN); |
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if (ret) |
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bphy_err(drvr, "failed to update device address ret %d\n", ret); |
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|
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return ret; |
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} |
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|
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/** |
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* brcmf_p2p_generate_bss_mac() - derive mac addresses for P2P. |
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* |
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* @p2p: P2P specific data. |
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* @dev_addr: optional device address. |
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* |
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* P2P needs mac addresses for P2P device and interface. If no device |
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* address it specified, these are derived from a random ethernet |
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* address. |
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*/ |
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static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr) |
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{ |
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struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; |
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bool random_addr = false; |
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bool local_admin = false; |
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|
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if (!dev_addr || is_zero_ether_addr(dev_addr)) { |
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/* If the primary interface address is already locally |
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* administered, create a new random address. |
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*/ |
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if (pri_ifp->mac_addr[0] & 0x02) { |
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random_addr = true; |
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} else { |
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dev_addr = pri_ifp->mac_addr; |
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local_admin = true; |
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} |
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} |
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|
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/* Generate the P2P Device Address obtaining a random ethernet |
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* address with the locally administered bit set. |
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*/ |
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if (random_addr) |
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eth_random_addr(p2p->dev_addr); |
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else |
|
memcpy(p2p->dev_addr, dev_addr, ETH_ALEN); |
|
|
|
if (local_admin) |
|
p2p->dev_addr[0] |= 0x02; |
|
|
|
/* Generate the P2P Interface Address. If the discovery and connection |
|
* BSSCFGs need to simultaneously co-exist, then this address must be |
|
* different from the P2P Device Address, but also locally administered. |
|
*/ |
|
memcpy(p2p->conn_int_addr, p2p->dev_addr, ETH_ALEN); |
|
p2p->conn_int_addr[0] |= 0x02; |
|
p2p->conn_int_addr[4] ^= 0x80; |
|
|
|
memcpy(p2p->conn2_int_addr, p2p->dev_addr, ETH_ALEN); |
|
p2p->conn2_int_addr[0] |= 0x02; |
|
p2p->conn2_int_addr[4] ^= 0x90; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_scan_is_p2p_request() - is cfg80211 scan request a P2P scan. |
|
* |
|
* @request: the scan request as received from cfg80211. |
|
* |
|
* returns true if one of the ssids in the request matches the |
|
* P2P wildcard ssid; otherwise returns false. |
|
*/ |
|
static bool brcmf_p2p_scan_is_p2p_request(struct cfg80211_scan_request *request) |
|
{ |
|
struct cfg80211_ssid *ssids = request->ssids; |
|
int i; |
|
|
|
for (i = 0; i < request->n_ssids; i++) { |
|
if (ssids[i].ssid_len != BRCMF_P2P_WILDCARD_SSID_LEN) |
|
continue; |
|
|
|
brcmf_dbg(INFO, "comparing ssid \"%s\"", ssids[i].ssid); |
|
if (!memcmp(BRCMF_P2P_WILDCARD_SSID, ssids[i].ssid, |
|
BRCMF_P2P_WILDCARD_SSID_LEN)) |
|
return true; |
|
} |
|
return false; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_set_discover_state - set discover state in firmware. |
|
* |
|
* @ifp: low-level interface object. |
|
* @state: discover state to set. |
|
* @chanspec: channel parameters (for state @WL_P2P_DISC_ST_LISTEN only). |
|
* @listen_ms: duration to listen (for state @WL_P2P_DISC_ST_LISTEN only). |
|
*/ |
|
static s32 brcmf_p2p_set_discover_state(struct brcmf_if *ifp, u8 state, |
|
u16 chanspec, u16 listen_ms) |
|
{ |
|
struct brcmf_p2p_disc_st_le discover_state; |
|
s32 ret = 0; |
|
brcmf_dbg(TRACE, "enter\n"); |
|
|
|
discover_state.state = state; |
|
discover_state.chspec = cpu_to_le16(chanspec); |
|
discover_state.dwell = cpu_to_le16(listen_ms); |
|
ret = brcmf_fil_bsscfg_data_set(ifp, "p2p_state", &discover_state, |
|
sizeof(discover_state)); |
|
return ret; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_deinit_discovery() - disable P2P device discovery. |
|
* |
|
* @p2p: P2P specific data. |
|
* |
|
* Resets the discovery state and disables it in firmware. |
|
*/ |
|
static s32 brcmf_p2p_deinit_discovery(struct brcmf_p2p_info *p2p) |
|
{ |
|
struct brcmf_cfg80211_vif *vif; |
|
|
|
brcmf_dbg(TRACE, "enter\n"); |
|
|
|
/* Set the discovery state to SCAN */ |
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; |
|
(void)brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0); |
|
|
|
/* Disable P2P discovery in the firmware */ |
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; |
|
(void)brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 0); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_enable_discovery() - initialize and configure discovery. |
|
* |
|
* @p2p: P2P specific data. |
|
* |
|
* Initializes the discovery device and configure the virtual interface. |
|
*/ |
|
static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info *p2p) |
|
{ |
|
struct brcmf_pub *drvr = p2p->cfg->pub; |
|
struct brcmf_cfg80211_vif *vif; |
|
s32 ret = 0; |
|
|
|
brcmf_dbg(TRACE, "enter\n"); |
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; |
|
if (!vif) { |
|
bphy_err(drvr, "P2P config device not available\n"); |
|
ret = -EPERM; |
|
goto exit; |
|
} |
|
|
|
if (test_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status)) { |
|
brcmf_dbg(INFO, "P2P config device already configured\n"); |
|
goto exit; |
|
} |
|
|
|
/* Re-initialize P2P Discovery in the firmware */ |
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; |
|
ret = brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 1); |
|
if (ret < 0) { |
|
bphy_err(drvr, "set p2p_disc error\n"); |
|
goto exit; |
|
} |
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; |
|
ret = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0); |
|
if (ret < 0) { |
|
bphy_err(drvr, "unable to set WL_P2P_DISC_ST_SCAN\n"); |
|
goto exit; |
|
} |
|
|
|
/* |
|
* Set wsec to any non-zero value in the discovery bsscfg |
|
* to ensure our P2P probe responses have the privacy bit |
|
* set in the 802.11 WPA IE. Some peer devices may not |
|
* initiate WPS with us if this bit is not set. |
|
*/ |
|
ret = brcmf_fil_bsscfg_int_set(vif->ifp, "wsec", AES_ENABLED); |
|
if (ret < 0) { |
|
bphy_err(drvr, "wsec error %d\n", ret); |
|
goto exit; |
|
} |
|
|
|
set_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status); |
|
exit: |
|
return ret; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_escan() - initiate a P2P scan. |
|
* |
|
* @p2p: P2P specific data. |
|
* @num_chans: number of channels to scan. |
|
* @chanspecs: channel parameters for @num_chans channels. |
|
* @search_state: P2P discover state to use. |
|
* @bss_type: type of P2P bss. |
|
*/ |
|
static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans, |
|
u16 chanspecs[], s32 search_state, |
|
enum p2p_bss_type bss_type) |
|
{ |
|
struct brcmf_pub *drvr = p2p->cfg->pub; |
|
s32 ret = 0; |
|
s32 memsize = offsetof(struct brcmf_p2p_scan_le, |
|
eparams.params_le.channel_list); |
|
s32 nprobes; |
|
s32 active; |
|
u32 i; |
|
u8 *memblk; |
|
struct brcmf_cfg80211_vif *vif; |
|
struct brcmf_p2p_scan_le *p2p_params; |
|
struct brcmf_scan_params_le *sparams; |
|
|
|
memsize += num_chans * sizeof(__le16); |
|
memblk = kzalloc(memsize, GFP_KERNEL); |
|
if (!memblk) |
|
return -ENOMEM; |
|
|
|
vif = p2p->bss_idx[bss_type].vif; |
|
if (vif == NULL) { |
|
bphy_err(drvr, "no vif for bss type %d\n", bss_type); |
|
ret = -EINVAL; |
|
goto exit; |
|
} |
|
p2p_params = (struct brcmf_p2p_scan_le *)memblk; |
|
sparams = &p2p_params->eparams.params_le; |
|
|
|
switch (search_state) { |
|
case WL_P2P_DISC_ST_SEARCH: |
|
/* |
|
* If we in SEARCH STATE, we don't need to set SSID explictly |
|
* because dongle use P2P WILDCARD internally by default, use |
|
* null ssid, which it is already due to kzalloc. |
|
*/ |
|
break; |
|
case WL_P2P_DISC_ST_SCAN: |
|
/* |
|
* wpa_supplicant has p2p_find command with type social or |
|
* progressive. For progressive, we need to set the ssid to |
|
* P2P WILDCARD because we just do broadcast scan unless |
|
* setting SSID. |
|
*/ |
|
sparams->ssid_le.SSID_len = |
|
cpu_to_le32(BRCMF_P2P_WILDCARD_SSID_LEN); |
|
memcpy(sparams->ssid_le.SSID, BRCMF_P2P_WILDCARD_SSID, |
|
BRCMF_P2P_WILDCARD_SSID_LEN); |
|
break; |
|
default: |
|
bphy_err(drvr, " invalid search state %d\n", search_state); |
|
ret = -EINVAL; |
|
goto exit; |
|
} |
|
|
|
brcmf_p2p_set_discover_state(vif->ifp, search_state, 0, 0); |
|
|
|
/* |
|
* set p2p scan parameters. |
|
*/ |
|
p2p_params->type = 'E'; |
|
|
|
/* determine the scan engine parameters */ |
|
sparams->bss_type = DOT11_BSSTYPE_ANY; |
|
sparams->scan_type = BRCMF_SCANTYPE_ACTIVE; |
|
|
|
eth_broadcast_addr(sparams->bssid); |
|
sparams->home_time = cpu_to_le32(P2PAPI_SCAN_HOME_TIME_MS); |
|
|
|
/* |
|
* SOCIAL_CHAN_CNT + 1 takes care of the Progressive scan |
|
* supported by the supplicant. |
|
*/ |
|
if (num_chans == SOCIAL_CHAN_CNT || num_chans == (SOCIAL_CHAN_CNT + 1)) |
|
active = P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS; |
|
else if (num_chans == AF_PEER_SEARCH_CNT) |
|
active = P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS; |
|
else if (brcmf_get_vif_state_any(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED)) |
|
active = -1; |
|
else |
|
active = P2PAPI_SCAN_DWELL_TIME_MS; |
|
|
|
/* Override scan params to find a peer for a connection */ |
|
if (num_chans == 1) { |
|
active = WL_SCAN_CONNECT_DWELL_TIME_MS; |
|
/* WAR to sync with presence period of VSDB GO. |
|
* send probe request more frequently |
|
*/ |
|
nprobes = active / WL_SCAN_JOIN_PROBE_INTERVAL_MS; |
|
} else { |
|
nprobes = active / P2PAPI_SCAN_NPROBS_TIME_MS; |
|
} |
|
|
|
if (nprobes <= 0) |
|
nprobes = 1; |
|
|
|
brcmf_dbg(INFO, "nprobes # %d, active_time %d\n", nprobes, active); |
|
sparams->active_time = cpu_to_le32(active); |
|
sparams->nprobes = cpu_to_le32(nprobes); |
|
sparams->passive_time = cpu_to_le32(-1); |
|
sparams->channel_num = cpu_to_le32(num_chans & |
|
BRCMF_SCAN_PARAMS_COUNT_MASK); |
|
for (i = 0; i < num_chans; i++) |
|
sparams->channel_list[i] = cpu_to_le16(chanspecs[i]); |
|
|
|
/* set the escan specific parameters */ |
|
p2p_params->eparams.version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION); |
|
p2p_params->eparams.action = cpu_to_le16(WL_ESCAN_ACTION_START); |
|
p2p_params->eparams.sync_id = cpu_to_le16(0x1234); |
|
/* perform p2p scan on primary device */ |
|
ret = brcmf_fil_bsscfg_data_set(vif->ifp, "p2p_scan", memblk, memsize); |
|
if (!ret) |
|
set_bit(BRCMF_SCAN_STATUS_BUSY, &p2p->cfg->scan_status); |
|
exit: |
|
kfree(memblk); |
|
return ret; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_run_escan() - escan callback for peer-to-peer. |
|
* |
|
* @cfg: driver private data for cfg80211 interface. |
|
* @ifp: interface control. |
|
* @request: scan request from cfg80211. |
|
* |
|
* Determines the P2P discovery state based to scan request parameters and |
|
* validates the channels in the request. |
|
*/ |
|
static s32 brcmf_p2p_run_escan(struct brcmf_cfg80211_info *cfg, |
|
struct brcmf_if *ifp, |
|
struct cfg80211_scan_request *request) |
|
{ |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct brcmf_pub *drvr = cfg->pub; |
|
s32 err = 0; |
|
s32 search_state = WL_P2P_DISC_ST_SCAN; |
|
struct brcmf_cfg80211_vif *vif; |
|
struct net_device *dev = NULL; |
|
int i, num_nodfs = 0; |
|
u16 *chanspecs; |
|
|
|
brcmf_dbg(TRACE, "enter\n"); |
|
|
|
if (!request) { |
|
err = -EINVAL; |
|
goto exit; |
|
} |
|
|
|
if (request->n_channels) { |
|
chanspecs = kcalloc(request->n_channels, sizeof(*chanspecs), |
|
GFP_KERNEL); |
|
if (!chanspecs) { |
|
err = -ENOMEM; |
|
goto exit; |
|
} |
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif; |
|
if (vif) |
|
dev = vif->wdev.netdev; |
|
if (request->n_channels == 3 && |
|
request->channels[0]->hw_value == SOCIAL_CHAN_1 && |
|
request->channels[1]->hw_value == SOCIAL_CHAN_2 && |
|
request->channels[2]->hw_value == SOCIAL_CHAN_3) { |
|
/* SOCIAL CHANNELS 1, 6, 11 */ |
|
search_state = WL_P2P_DISC_ST_SEARCH; |
|
brcmf_dbg(INFO, "P2P SEARCH PHASE START\n"); |
|
} else if (dev != NULL && |
|
vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) { |
|
/* If you are already a GO, then do SEARCH only */ |
|
brcmf_dbg(INFO, "Already a GO. Do SEARCH Only\n"); |
|
search_state = WL_P2P_DISC_ST_SEARCH; |
|
} else { |
|
brcmf_dbg(INFO, "P2P SCAN STATE START\n"); |
|
} |
|
|
|
/* |
|
* no P2P scanning on passive or DFS channels. |
|
*/ |
|
for (i = 0; i < request->n_channels; i++) { |
|
struct ieee80211_channel *chan = request->channels[i]; |
|
|
|
if (chan->flags & (IEEE80211_CHAN_RADAR | |
|
IEEE80211_CHAN_NO_IR)) |
|
continue; |
|
|
|
chanspecs[i] = channel_to_chanspec(&p2p->cfg->d11inf, |
|
chan); |
|
brcmf_dbg(INFO, "%d: chan=%d, channel spec=%x\n", |
|
num_nodfs, chan->hw_value, chanspecs[i]); |
|
num_nodfs++; |
|
} |
|
err = brcmf_p2p_escan(p2p, num_nodfs, chanspecs, search_state, |
|
P2PAPI_BSSCFG_DEVICE); |
|
kfree(chanspecs); |
|
} |
|
exit: |
|
if (err) |
|
bphy_err(drvr, "error (%d)\n", err); |
|
return err; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_find_listen_channel() - find listen channel in ie string. |
|
* |
|
* @ie: string of information elements. |
|
* @ie_len: length of string. |
|
* |
|
* Scan ie for p2p ie and look for attribute 6 channel. If available determine |
|
* channel and return it. |
|
*/ |
|
static s32 brcmf_p2p_find_listen_channel(const u8 *ie, u32 ie_len) |
|
{ |
|
u8 channel_ie[5]; |
|
s32 listen_channel; |
|
s32 err; |
|
|
|
err = cfg80211_get_p2p_attr(ie, ie_len, |
|
IEEE80211_P2P_ATTR_LISTEN_CHANNEL, |
|
channel_ie, sizeof(channel_ie)); |
|
if (err < 0) |
|
return err; |
|
|
|
/* listen channel subel length format: */ |
|
/* 3(country) + 1(op. class) + 1(chan num) */ |
|
listen_channel = (s32)channel_ie[3 + 1]; |
|
|
|
if (listen_channel == SOCIAL_CHAN_1 || |
|
listen_channel == SOCIAL_CHAN_2 || |
|
listen_channel == SOCIAL_CHAN_3) { |
|
brcmf_dbg(INFO, "Found my Listen Channel %d\n", listen_channel); |
|
return listen_channel; |
|
} |
|
|
|
return -EPERM; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_scan_prep() - prepare scan based on request. |
|
* |
|
* @wiphy: wiphy device. |
|
* @request: scan request from cfg80211. |
|
* @vif: vif on which scan request is to be executed. |
|
* |
|
* Prepare the scan appropriately for type of scan requested. Overrides the |
|
* escan .run() callback for peer-to-peer scanning. |
|
*/ |
|
int brcmf_p2p_scan_prep(struct wiphy *wiphy, |
|
struct cfg80211_scan_request *request, |
|
struct brcmf_cfg80211_vif *vif) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
int err; |
|
|
|
if (brcmf_p2p_scan_is_p2p_request(request)) { |
|
/* find my listen channel */ |
|
err = brcmf_p2p_find_listen_channel(request->ie, |
|
request->ie_len); |
|
if (err < 0) |
|
return err; |
|
|
|
p2p->afx_hdl.my_listen_chan = err; |
|
|
|
clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); |
|
brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n"); |
|
|
|
err = brcmf_p2p_enable_discovery(p2p); |
|
if (err) |
|
return err; |
|
|
|
/* override .run_escan() callback. */ |
|
cfg->escan_info.run = brcmf_p2p_run_escan; |
|
} |
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_discover_listen() - set firmware to discover listen state. |
|
* |
|
* @p2p: p2p device. |
|
* @channel: channel nr for discover listen. |
|
* @duration: time in ms to stay on channel. |
|
* |
|
*/ |
|
static s32 |
|
brcmf_p2p_discover_listen(struct brcmf_p2p_info *p2p, u16 channel, u32 duration) |
|
{ |
|
struct brcmf_pub *drvr = p2p->cfg->pub; |
|
struct brcmf_cfg80211_vif *vif; |
|
struct brcmu_chan ch; |
|
s32 err = 0; |
|
|
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; |
|
if (!vif) { |
|
bphy_err(drvr, "Discovery is not set, so we have nothing to do\n"); |
|
err = -EPERM; |
|
goto exit; |
|
} |
|
|
|
if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status)) { |
|
bphy_err(drvr, "Previous LISTEN is not completed yet\n"); |
|
/* WAR: prevent cookie mismatch in wpa_supplicant return OK */ |
|
goto exit; |
|
} |
|
|
|
ch.chnum = channel; |
|
ch.bw = BRCMU_CHAN_BW_20; |
|
p2p->cfg->d11inf.encchspec(&ch); |
|
err = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_LISTEN, |
|
ch.chspec, (u16)duration); |
|
if (!err) { |
|
set_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status); |
|
p2p->remain_on_channel_cookie++; |
|
} |
|
exit: |
|
return err; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_remain_on_channel() - put device on channel and stay there. |
|
* |
|
* @wiphy: wiphy device. |
|
* @wdev: wireless device. |
|
* @channel: channel to stay on. |
|
* @duration: time in ms to remain on channel. |
|
* @cookie: cookie. |
|
*/ |
|
int brcmf_p2p_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, |
|
struct ieee80211_channel *channel, |
|
unsigned int duration, u64 *cookie) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
s32 err; |
|
u16 channel_nr; |
|
|
|
channel_nr = ieee80211_frequency_to_channel(channel->center_freq); |
|
brcmf_dbg(TRACE, "Enter, channel: %d, duration ms (%d)\n", channel_nr, |
|
duration); |
|
|
|
err = brcmf_p2p_enable_discovery(p2p); |
|
if (err) |
|
goto exit; |
|
err = brcmf_p2p_discover_listen(p2p, channel_nr, duration); |
|
if (err) |
|
goto exit; |
|
|
|
memcpy(&p2p->remain_on_channel, channel, sizeof(*channel)); |
|
*cookie = p2p->remain_on_channel_cookie; |
|
cfg80211_ready_on_channel(wdev, *cookie, channel, duration, GFP_KERNEL); |
|
|
|
exit: |
|
return err; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_notify_listen_complete() - p2p listen has completed. |
|
* |
|
* @ifp: interfac control. |
|
* @e: event message. Not used, to make it usable for fweh event dispatcher. |
|
* @data: payload of message. Not used. |
|
* |
|
*/ |
|
int brcmf_p2p_notify_listen_complete(struct brcmf_if *ifp, |
|
const struct brcmf_event_msg *e, |
|
void *data) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = ifp->drvr->config; |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
|
|
brcmf_dbg(TRACE, "Enter\n"); |
|
if (test_and_clear_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, |
|
&p2p->status)) { |
|
if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, |
|
&p2p->status)) { |
|
clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, |
|
&p2p->status); |
|
brcmf_dbg(INFO, "Listen DONE, wake up wait_next_af\n"); |
|
complete(&p2p->wait_next_af); |
|
} |
|
|
|
cfg80211_remain_on_channel_expired(&ifp->vif->wdev, |
|
p2p->remain_on_channel_cookie, |
|
&p2p->remain_on_channel, |
|
GFP_KERNEL); |
|
} |
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_cancel_remain_on_channel() - cancel p2p listen state. |
|
* |
|
* @ifp: interfac control. |
|
* |
|
*/ |
|
void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if *ifp) |
|
{ |
|
if (!ifp) |
|
return; |
|
brcmf_p2p_set_discover_state(ifp, WL_P2P_DISC_ST_SCAN, 0, 0); |
|
brcmf_p2p_notify_listen_complete(ifp, NULL, NULL); |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_act_frm_search() - search function for action frame. |
|
* |
|
* @p2p: p2p device. |
|
* @channel: channel on which action frame is to be trasmitted. |
|
* |
|
* search function to reach at common channel to send action frame. When |
|
* channel is 0 then all social channels will be used to send af |
|
*/ |
|
static s32 brcmf_p2p_act_frm_search(struct brcmf_p2p_info *p2p, u16 channel) |
|
{ |
|
struct brcmf_pub *drvr = p2p->cfg->pub; |
|
s32 err; |
|
u32 channel_cnt; |
|
u16 *default_chan_list; |
|
u32 i; |
|
struct brcmu_chan ch; |
|
|
|
brcmf_dbg(TRACE, "Enter\n"); |
|
|
|
if (channel) |
|
channel_cnt = AF_PEER_SEARCH_CNT; |
|
else |
|
channel_cnt = SOCIAL_CHAN_CNT; |
|
default_chan_list = kcalloc(channel_cnt, sizeof(*default_chan_list), |
|
GFP_KERNEL); |
|
if (default_chan_list == NULL) { |
|
bphy_err(drvr, "channel list allocation failed\n"); |
|
err = -ENOMEM; |
|
goto exit; |
|
} |
|
ch.bw = BRCMU_CHAN_BW_20; |
|
if (channel) { |
|
ch.chnum = channel; |
|
p2p->cfg->d11inf.encchspec(&ch); |
|
/* insert same channel to the chan_list */ |
|
for (i = 0; i < channel_cnt; i++) |
|
default_chan_list[i] = ch.chspec; |
|
} else { |
|
ch.chnum = SOCIAL_CHAN_1; |
|
p2p->cfg->d11inf.encchspec(&ch); |
|
default_chan_list[0] = ch.chspec; |
|
ch.chnum = SOCIAL_CHAN_2; |
|
p2p->cfg->d11inf.encchspec(&ch); |
|
default_chan_list[1] = ch.chspec; |
|
ch.chnum = SOCIAL_CHAN_3; |
|
p2p->cfg->d11inf.encchspec(&ch); |
|
default_chan_list[2] = ch.chspec; |
|
} |
|
err = brcmf_p2p_escan(p2p, channel_cnt, default_chan_list, |
|
WL_P2P_DISC_ST_SEARCH, P2PAPI_BSSCFG_DEVICE); |
|
kfree(default_chan_list); |
|
exit: |
|
return err; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_afx_handler() - afx worker thread. |
|
* |
|
* @work: |
|
* |
|
*/ |
|
static void brcmf_p2p_afx_handler(struct work_struct *work) |
|
{ |
|
struct afx_hdl *afx_hdl = container_of(work, struct afx_hdl, afx_work); |
|
struct brcmf_p2p_info *p2p = container_of(afx_hdl, |
|
struct brcmf_p2p_info, |
|
afx_hdl); |
|
struct brcmf_pub *drvr = p2p->cfg->pub; |
|
s32 err; |
|
|
|
if (!afx_hdl->is_active) |
|
return; |
|
|
|
if (afx_hdl->is_listen && afx_hdl->my_listen_chan) |
|
/* 100ms ~ 300ms */ |
|
err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan, |
|
100 * (1 + prandom_u32() % 3)); |
|
else |
|
err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan); |
|
|
|
if (err) { |
|
bphy_err(drvr, "ERROR occurred! value is (%d)\n", err); |
|
if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, |
|
&p2p->status)) |
|
complete(&afx_hdl->act_frm_scan); |
|
} |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_af_searching_channel() - search channel. |
|
* |
|
* @p2p: p2p device info struct. |
|
* |
|
*/ |
|
static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p) |
|
{ |
|
struct afx_hdl *afx_hdl = &p2p->afx_hdl; |
|
struct brcmf_cfg80211_vif *pri_vif; |
|
s32 retry; |
|
|
|
brcmf_dbg(TRACE, "Enter\n"); |
|
|
|
pri_vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; |
|
|
|
reinit_completion(&afx_hdl->act_frm_scan); |
|
set_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status); |
|
afx_hdl->is_active = true; |
|
afx_hdl->peer_chan = P2P_INVALID_CHANNEL; |
|
|
|
/* Loop to wait until we find a peer's channel or the |
|
* pending action frame tx is cancelled. |
|
*/ |
|
retry = 0; |
|
while ((retry < P2P_CHANNEL_SYNC_RETRY) && |
|
(afx_hdl->peer_chan == P2P_INVALID_CHANNEL)) { |
|
afx_hdl->is_listen = false; |
|
brcmf_dbg(TRACE, "Scheduling action frame for sending.. (%d)\n", |
|
retry); |
|
/* search peer on peer's listen channel */ |
|
schedule_work(&afx_hdl->afx_work); |
|
wait_for_completion_timeout(&afx_hdl->act_frm_scan, |
|
P2P_AF_FRM_SCAN_MAX_WAIT); |
|
if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) || |
|
(!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, |
|
&p2p->status))) |
|
break; |
|
|
|
if (afx_hdl->my_listen_chan) { |
|
brcmf_dbg(TRACE, "Scheduling listen peer, channel=%d\n", |
|
afx_hdl->my_listen_chan); |
|
/* listen on my listen channel */ |
|
afx_hdl->is_listen = true; |
|
schedule_work(&afx_hdl->afx_work); |
|
wait_for_completion_timeout(&afx_hdl->act_frm_scan, |
|
P2P_AF_FRM_SCAN_MAX_WAIT); |
|
} |
|
if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) || |
|
(!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, |
|
&p2p->status))) |
|
break; |
|
retry++; |
|
|
|
/* if sta is connected or connecting, sleep for a while before |
|
* retry af tx or finding a peer |
|
*/ |
|
if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &pri_vif->sme_state) || |
|
test_bit(BRCMF_VIF_STATUS_CONNECTING, &pri_vif->sme_state)) |
|
msleep(P2P_DEFAULT_SLEEP_TIME_VSDB); |
|
} |
|
|
|
brcmf_dbg(TRACE, "Completed search/listen peer_chan=%d\n", |
|
afx_hdl->peer_chan); |
|
afx_hdl->is_active = false; |
|
|
|
clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status); |
|
|
|
return afx_hdl->peer_chan; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_scan_finding_common_channel() - was escan used for finding channel |
|
* |
|
* @cfg: common configuration struct. |
|
* @bi: bss info struct, result from scan. |
|
* |
|
*/ |
|
bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info *cfg, |
|
struct brcmf_bss_info_le *bi) |
|
|
|
{ |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct afx_hdl *afx_hdl = &p2p->afx_hdl; |
|
struct brcmu_chan ch; |
|
u8 *ie; |
|
s32 err; |
|
u8 p2p_dev_addr[ETH_ALEN]; |
|
|
|
if (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status)) |
|
return false; |
|
|
|
if (bi == NULL) { |
|
brcmf_dbg(TRACE, "ACTION FRAME SCAN Done\n"); |
|
if (afx_hdl->peer_chan == P2P_INVALID_CHANNEL) |
|
complete(&afx_hdl->act_frm_scan); |
|
return true; |
|
} |
|
|
|
ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset); |
|
memset(p2p_dev_addr, 0, sizeof(p2p_dev_addr)); |
|
err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length), |
|
IEEE80211_P2P_ATTR_DEVICE_INFO, |
|
p2p_dev_addr, sizeof(p2p_dev_addr)); |
|
if (err < 0) |
|
err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length), |
|
IEEE80211_P2P_ATTR_DEVICE_ID, |
|
p2p_dev_addr, sizeof(p2p_dev_addr)); |
|
if ((err >= 0) && |
|
(ether_addr_equal(p2p_dev_addr, afx_hdl->tx_dst_addr))) { |
|
if (!bi->ctl_ch) { |
|
ch.chspec = le16_to_cpu(bi->chanspec); |
|
cfg->d11inf.decchspec(&ch); |
|
bi->ctl_ch = ch.control_ch_num; |
|
} |
|
afx_hdl->peer_chan = bi->ctl_ch; |
|
brcmf_dbg(TRACE, "ACTION FRAME SCAN : Peer %pM found, channel : %d\n", |
|
afx_hdl->tx_dst_addr, afx_hdl->peer_chan); |
|
complete(&afx_hdl->act_frm_scan); |
|
} |
|
return true; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_abort_action_frame() - abort action frame. |
|
* |
|
* @cfg: common configuration struct. |
|
* |
|
*/ |
|
static s32 brcmf_p2p_abort_action_frame(struct brcmf_cfg80211_info *cfg) |
|
{ |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct brcmf_cfg80211_vif *vif; |
|
s32 err; |
|
s32 int_val = 1; |
|
|
|
brcmf_dbg(TRACE, "Enter\n"); |
|
|
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; |
|
err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe_abort", &int_val, |
|
sizeof(s32)); |
|
if (err) |
|
brcmf_err(" aborting action frame has failed (%d)\n", err); |
|
|
|
return err; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_stop_wait_next_action_frame() - finish scan if af tx complete. |
|
* |
|
* @cfg: common configuration struct. |
|
* |
|
*/ |
|
static void |
|
brcmf_p2p_stop_wait_next_action_frame(struct brcmf_cfg80211_info *cfg) |
|
{ |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct brcmf_if *ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; |
|
s32 err; |
|
|
|
if (test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status) && |
|
(test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status) || |
|
test_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status))) { |
|
brcmf_dbg(TRACE, "*** Wake UP ** abort actframe iovar\n"); |
|
/* if channel is not zero, "actfame" uses off channel scan. |
|
* So abort scan for off channel completion. |
|
*/ |
|
if (p2p->af_sent_channel) { |
|
/* abort actframe using actframe_abort or abort scan */ |
|
err = brcmf_p2p_abort_action_frame(cfg); |
|
if (err) |
|
brcmf_notify_escan_complete(cfg, ifp, true, |
|
true); |
|
} |
|
} else if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, |
|
&p2p->status)) { |
|
brcmf_dbg(TRACE, "*** Wake UP ** abort listen for next af frame\n"); |
|
/* So abort scan to cancel listen */ |
|
brcmf_notify_escan_complete(cfg, ifp, true, true); |
|
} |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_gon_req_collision() - Check if go negotiaton collission |
|
* |
|
* @p2p: p2p device info struct. |
|
* @mac: MAC address. |
|
* |
|
* return true if recevied action frame is to be dropped. |
|
*/ |
|
static bool |
|
brcmf_p2p_gon_req_collision(struct brcmf_p2p_info *p2p, u8 *mac) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = p2p->cfg; |
|
struct brcmf_if *ifp; |
|
|
|
brcmf_dbg(TRACE, "Enter\n"); |
|
|
|
if (!test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) || |
|
!p2p->gon_req_action) |
|
return false; |
|
|
|
brcmf_dbg(TRACE, "GO Negotiation Request COLLISION !!!\n"); |
|
/* if sa(peer) addr is less than da(my) addr, then this device |
|
* process peer's gon request and block to send gon req. |
|
* if not (sa addr > da addr), |
|
* this device will process gon request and drop gon req of peer. |
|
*/ |
|
ifp = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->ifp; |
|
if (memcmp(mac, ifp->mac_addr, ETH_ALEN) < 0) { |
|
brcmf_dbg(INFO, "Block transmit gon req !!!\n"); |
|
p2p->block_gon_req_tx = true; |
|
/* if we are finding a common channel for sending af, |
|
* do not scan more to block to send current gon req |
|
*/ |
|
if (test_and_clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, |
|
&p2p->status)) |
|
complete(&p2p->afx_hdl.act_frm_scan); |
|
if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, |
|
&p2p->status)) |
|
brcmf_p2p_stop_wait_next_action_frame(cfg); |
|
return false; |
|
} |
|
|
|
/* drop gon request of peer to process gon request by this device. */ |
|
brcmf_dbg(INFO, "Drop received gon req !!!\n"); |
|
|
|
return true; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_notify_action_frame_rx() - received action frame. |
|
* |
|
* @ifp: interfac control. |
|
* @e: event message. Not used, to make it usable for fweh event dispatcher. |
|
* @data: payload of message, containing action frame data. |
|
* |
|
*/ |
|
int brcmf_p2p_notify_action_frame_rx(struct brcmf_if *ifp, |
|
const struct brcmf_event_msg *e, |
|
void *data) |
|
{ |
|
struct brcmf_pub *drvr = ifp->drvr; |
|
struct brcmf_cfg80211_info *cfg = drvr->config; |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct afx_hdl *afx_hdl = &p2p->afx_hdl; |
|
struct wireless_dev *wdev; |
|
u32 mgmt_frame_len = e->datalen - sizeof(struct brcmf_rx_mgmt_data); |
|
struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data; |
|
u8 *frame = (u8 *)(rxframe + 1); |
|
struct brcmf_p2p_pub_act_frame *act_frm; |
|
struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; |
|
struct brcmu_chan ch; |
|
struct ieee80211_mgmt *mgmt_frame; |
|
s32 freq; |
|
u16 mgmt_type; |
|
u8 action; |
|
|
|
if (e->datalen < sizeof(*rxframe)) { |
|
brcmf_dbg(SCAN, "Event data to small. Ignore\n"); |
|
return 0; |
|
} |
|
|
|
ch.chspec = be16_to_cpu(rxframe->chanspec); |
|
cfg->d11inf.decchspec(&ch); |
|
/* Check if wpa_supplicant has registered for this frame */ |
|
brcmf_dbg(INFO, "ifp->vif->mgmt_rx_reg %04x\n", ifp->vif->mgmt_rx_reg); |
|
mgmt_type = (IEEE80211_STYPE_ACTION & IEEE80211_FCTL_STYPE) >> 4; |
|
if ((ifp->vif->mgmt_rx_reg & BIT(mgmt_type)) == 0) |
|
return 0; |
|
|
|
brcmf_p2p_print_actframe(false, frame, mgmt_frame_len); |
|
|
|
action = P2P_PAF_SUBTYPE_INVALID; |
|
if (brcmf_p2p_is_pub_action(frame, mgmt_frame_len)) { |
|
act_frm = (struct brcmf_p2p_pub_act_frame *)frame; |
|
action = act_frm->subtype; |
|
if ((action == P2P_PAF_GON_REQ) && |
|
(brcmf_p2p_gon_req_collision(p2p, (u8 *)e->addr))) { |
|
if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, |
|
&p2p->status) && |
|
(ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) { |
|
afx_hdl->peer_chan = ch.control_ch_num; |
|
brcmf_dbg(INFO, "GON request: Peer found, channel=%d\n", |
|
afx_hdl->peer_chan); |
|
complete(&afx_hdl->act_frm_scan); |
|
} |
|
return 0; |
|
} |
|
/* After complete GO Negotiation, roll back to mpc mode */ |
|
if ((action == P2P_PAF_GON_CONF) || |
|
(action == P2P_PAF_PROVDIS_RSP)) |
|
brcmf_set_mpc(ifp, 1); |
|
if (action == P2P_PAF_GON_CONF) { |
|
brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n"); |
|
clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); |
|
} |
|
} else if (brcmf_p2p_is_gas_action(frame, mgmt_frame_len)) { |
|
sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; |
|
action = sd_act_frm->action; |
|
} |
|
|
|
if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) && |
|
(p2p->next_af_subtype == action)) { |
|
brcmf_dbg(TRACE, "We got a right next frame! (%d)\n", action); |
|
clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, |
|
&p2p->status); |
|
/* Stop waiting for next AF. */ |
|
brcmf_p2p_stop_wait_next_action_frame(cfg); |
|
} |
|
|
|
mgmt_frame = kzalloc(offsetof(struct ieee80211_mgmt, u) + |
|
mgmt_frame_len, GFP_KERNEL); |
|
if (!mgmt_frame) { |
|
bphy_err(drvr, "No memory available for action frame\n"); |
|
return -ENOMEM; |
|
} |
|
memcpy(mgmt_frame->da, ifp->mac_addr, ETH_ALEN); |
|
brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mgmt_frame->bssid, |
|
ETH_ALEN); |
|
memcpy(mgmt_frame->sa, e->addr, ETH_ALEN); |
|
mgmt_frame->frame_control = cpu_to_le16(IEEE80211_STYPE_ACTION); |
|
memcpy(&mgmt_frame->u, frame, mgmt_frame_len); |
|
mgmt_frame_len += offsetof(struct ieee80211_mgmt, u); |
|
|
|
freq = ieee80211_channel_to_frequency(ch.control_ch_num, |
|
ch.band == BRCMU_CHAN_BAND_2G ? |
|
NL80211_BAND_2GHZ : |
|
NL80211_BAND_5GHZ); |
|
|
|
wdev = &ifp->vif->wdev; |
|
cfg80211_rx_mgmt(wdev, freq, 0, (u8 *)mgmt_frame, mgmt_frame_len, 0); |
|
|
|
kfree(mgmt_frame); |
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_notify_action_tx_complete() - transmit action frame complete |
|
* |
|
* @ifp: interfac control. |
|
* @e: event message. Not used, to make it usable for fweh event dispatcher. |
|
* @data: not used. |
|
* |
|
*/ |
|
int brcmf_p2p_notify_action_tx_complete(struct brcmf_if *ifp, |
|
const struct brcmf_event_msg *e, |
|
void *data) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = ifp->drvr->config; |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
|
|
brcmf_dbg(INFO, "Enter: event %s, status=%d\n", |
|
e->event_code == BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE ? |
|
"ACTION_FRAME_OFF_CHAN_COMPLETE" : "ACTION_FRAME_COMPLETE", |
|
e->status); |
|
|
|
if (!test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status)) |
|
return 0; |
|
|
|
if (e->event_code == BRCMF_E_ACTION_FRAME_COMPLETE) { |
|
if (e->status == BRCMF_E_STATUS_SUCCESS) { |
|
set_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, |
|
&p2p->status); |
|
if (!p2p->wait_for_offchan_complete) |
|
complete(&p2p->send_af_done); |
|
} else { |
|
set_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status); |
|
/* If there is no ack, we don't need to wait for |
|
* WLC_E_ACTION_FRAME_OFFCHAN_COMPLETE event |
|
*/ |
|
brcmf_p2p_stop_wait_next_action_frame(cfg); |
|
} |
|
|
|
} else { |
|
complete(&p2p->send_af_done); |
|
} |
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_tx_action_frame() - send action frame over fil. |
|
* |
|
* @p2p: p2p info struct for vif. |
|
* @af_params: action frame data/info. |
|
* |
|
* Send an action frame immediately without doing channel synchronization. |
|
* |
|
* This function waits for a completion event before returning. |
|
* The WLC_E_ACTION_FRAME_COMPLETE event will be received when the action |
|
* frame is transmitted. |
|
*/ |
|
static s32 brcmf_p2p_tx_action_frame(struct brcmf_p2p_info *p2p, |
|
struct brcmf_fil_af_params_le *af_params) |
|
{ |
|
struct brcmf_pub *drvr = p2p->cfg->pub; |
|
struct brcmf_cfg80211_vif *vif; |
|
struct brcmf_p2p_action_frame *p2p_af; |
|
s32 err = 0; |
|
|
|
brcmf_dbg(TRACE, "Enter\n"); |
|
|
|
reinit_completion(&p2p->send_af_done); |
|
clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status); |
|
clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status); |
|
|
|
/* check if it is a p2p_presence response */ |
|
p2p_af = (struct brcmf_p2p_action_frame *)af_params->action_frame.data; |
|
if (p2p_af->subtype == P2P_AF_PRESENCE_RSP) |
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif; |
|
else |
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; |
|
|
|
err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe", af_params, |
|
sizeof(*af_params)); |
|
if (err) { |
|
bphy_err(drvr, " sending action frame has failed\n"); |
|
goto exit; |
|
} |
|
|
|
p2p->af_sent_channel = le32_to_cpu(af_params->channel); |
|
p2p->af_tx_sent_jiffies = jiffies; |
|
|
|
if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status) && |
|
p2p->af_sent_channel == |
|
ieee80211_frequency_to_channel(p2p->remain_on_channel.center_freq)) |
|
p2p->wait_for_offchan_complete = false; |
|
else |
|
p2p->wait_for_offchan_complete = true; |
|
|
|
brcmf_dbg(TRACE, "Waiting for %s tx completion event\n", |
|
(p2p->wait_for_offchan_complete) ? |
|
"off-channel" : "on-channel"); |
|
|
|
wait_for_completion_timeout(&p2p->send_af_done, P2P_AF_MAX_WAIT_TIME); |
|
|
|
if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status)) { |
|
brcmf_dbg(TRACE, "TX action frame operation is success\n"); |
|
} else { |
|
err = -EIO; |
|
brcmf_dbg(TRACE, "TX action frame operation has failed\n"); |
|
} |
|
/* clear status bit for action tx */ |
|
clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status); |
|
clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status); |
|
|
|
exit: |
|
return err; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_pub_af_tx() - public action frame tx routine. |
|
* |
|
* @cfg: driver private data for cfg80211 interface. |
|
* @af_params: action frame data/info. |
|
* @config_af_params: configuration data for action frame. |
|
* |
|
* routine which transmits ation frame public type. |
|
*/ |
|
static s32 brcmf_p2p_pub_af_tx(struct brcmf_cfg80211_info *cfg, |
|
struct brcmf_fil_af_params_le *af_params, |
|
struct brcmf_config_af_params *config_af_params) |
|
{ |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct brcmf_pub *drvr = cfg->pub; |
|
struct brcmf_fil_action_frame_le *action_frame; |
|
struct brcmf_p2p_pub_act_frame *act_frm; |
|
s32 err = 0; |
|
u16 ie_len; |
|
|
|
action_frame = &af_params->action_frame; |
|
act_frm = (struct brcmf_p2p_pub_act_frame *)(action_frame->data); |
|
|
|
config_af_params->extra_listen = true; |
|
|
|
switch (act_frm->subtype) { |
|
case P2P_PAF_GON_REQ: |
|
brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status set\n"); |
|
set_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); |
|
config_af_params->mpc_onoff = 0; |
|
config_af_params->search_channel = true; |
|
p2p->next_af_subtype = act_frm->subtype + 1; |
|
p2p->gon_req_action = true; |
|
/* increase dwell time to wait for RESP frame */ |
|
af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); |
|
break; |
|
case P2P_PAF_GON_RSP: |
|
p2p->next_af_subtype = act_frm->subtype + 1; |
|
/* increase dwell time to wait for CONF frame */ |
|
af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); |
|
break; |
|
case P2P_PAF_GON_CONF: |
|
/* If we reached till GO Neg confirmation reset the filter */ |
|
brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n"); |
|
clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); |
|
/* turn on mpc again if go nego is done */ |
|
config_af_params->mpc_onoff = 1; |
|
/* minimize dwell time */ |
|
af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME); |
|
config_af_params->extra_listen = false; |
|
break; |
|
case P2P_PAF_INVITE_REQ: |
|
config_af_params->search_channel = true; |
|
p2p->next_af_subtype = act_frm->subtype + 1; |
|
/* increase dwell time */ |
|
af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); |
|
break; |
|
case P2P_PAF_INVITE_RSP: |
|
/* minimize dwell time */ |
|
af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME); |
|
config_af_params->extra_listen = false; |
|
break; |
|
case P2P_PAF_DEVDIS_REQ: |
|
config_af_params->search_channel = true; |
|
p2p->next_af_subtype = act_frm->subtype + 1; |
|
/* maximize dwell time to wait for RESP frame */ |
|
af_params->dwell_time = cpu_to_le32(P2P_AF_LONG_DWELL_TIME); |
|
break; |
|
case P2P_PAF_DEVDIS_RSP: |
|
/* minimize dwell time */ |
|
af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME); |
|
config_af_params->extra_listen = false; |
|
break; |
|
case P2P_PAF_PROVDIS_REQ: |
|
ie_len = le16_to_cpu(action_frame->len) - |
|
offsetof(struct brcmf_p2p_pub_act_frame, elts); |
|
if (cfg80211_get_p2p_attr(&act_frm->elts[0], ie_len, |
|
IEEE80211_P2P_ATTR_GROUP_ID, |
|
NULL, 0) < 0) |
|
config_af_params->search_channel = true; |
|
config_af_params->mpc_onoff = 0; |
|
p2p->next_af_subtype = act_frm->subtype + 1; |
|
/* increase dwell time to wait for RESP frame */ |
|
af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); |
|
break; |
|
case P2P_PAF_PROVDIS_RSP: |
|
/* wpa_supplicant send go nego req right after prov disc */ |
|
p2p->next_af_subtype = P2P_PAF_GON_REQ; |
|
/* increase dwell time to MED level */ |
|
af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); |
|
config_af_params->extra_listen = false; |
|
break; |
|
default: |
|
bphy_err(drvr, "Unknown p2p pub act frame subtype: %d\n", |
|
act_frm->subtype); |
|
err = -EINVAL; |
|
} |
|
return err; |
|
} |
|
|
|
static bool brcmf_p2p_check_dwell_overflow(u32 requested_dwell, |
|
unsigned long dwell_jiffies) |
|
{ |
|
if ((requested_dwell & CUSTOM_RETRY_MASK) && |
|
(jiffies_to_msecs(jiffies - dwell_jiffies) > |
|
(requested_dwell & ~CUSTOM_RETRY_MASK))) { |
|
brcmf_err("Action frame TX retry time over dwell time!\n"); |
|
return true; |
|
} |
|
return false; |
|
} |
|
/** |
|
* brcmf_p2p_send_action_frame() - send action frame . |
|
* |
|
* @cfg: driver private data for cfg80211 interface. |
|
* @ndev: net device to transmit on. |
|
* @af_params: configuration data for action frame. |
|
*/ |
|
bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg, |
|
struct net_device *ndev, |
|
struct brcmf_fil_af_params_le *af_params) |
|
{ |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct brcmf_if *ifp = netdev_priv(ndev); |
|
struct brcmf_fil_action_frame_le *action_frame; |
|
struct brcmf_config_af_params config_af_params; |
|
struct afx_hdl *afx_hdl = &p2p->afx_hdl; |
|
struct brcmf_pub *drvr = cfg->pub; |
|
u16 action_frame_len; |
|
bool ack = false; |
|
u8 category; |
|
u8 action; |
|
s32 tx_retry; |
|
s32 extra_listen_time; |
|
uint delta_ms; |
|
unsigned long dwell_jiffies = 0; |
|
bool dwell_overflow = false; |
|
|
|
u32 requested_dwell = le32_to_cpu(af_params->dwell_time); |
|
action_frame = &af_params->action_frame; |
|
action_frame_len = le16_to_cpu(action_frame->len); |
|
|
|
brcmf_p2p_print_actframe(true, action_frame->data, action_frame_len); |
|
|
|
/* Add the default dwell time. Dwell time to stay off-channel */ |
|
/* to wait for a response action frame after transmitting an */ |
|
/* GO Negotiation action frame */ |
|
af_params->dwell_time = cpu_to_le32(P2P_AF_DWELL_TIME); |
|
|
|
category = action_frame->data[DOT11_ACTION_CAT_OFF]; |
|
action = action_frame->data[DOT11_ACTION_ACT_OFF]; |
|
|
|
/* initialize variables */ |
|
p2p->next_af_subtype = P2P_PAF_SUBTYPE_INVALID; |
|
p2p->gon_req_action = false; |
|
|
|
/* config parameters */ |
|
config_af_params.mpc_onoff = -1; |
|
config_af_params.search_channel = false; |
|
config_af_params.extra_listen = false; |
|
|
|
if (brcmf_p2p_is_pub_action(action_frame->data, action_frame_len)) { |
|
/* p2p public action frame process */ |
|
if (brcmf_p2p_pub_af_tx(cfg, af_params, &config_af_params)) { |
|
/* Just send unknown subtype frame with */ |
|
/* default parameters. */ |
|
bphy_err(drvr, "P2P Public action frame, unknown subtype.\n"); |
|
} |
|
} else if (brcmf_p2p_is_gas_action(action_frame->data, |
|
action_frame_len)) { |
|
/* service discovery process */ |
|
if (action == P2PSD_ACTION_ID_GAS_IREQ || |
|
action == P2PSD_ACTION_ID_GAS_CREQ) { |
|
/* configure service discovery query frame */ |
|
config_af_params.search_channel = true; |
|
|
|
/* save next af suptype to cancel */ |
|
/* remaining dwell time */ |
|
p2p->next_af_subtype = action + 1; |
|
|
|
af_params->dwell_time = |
|
cpu_to_le32(P2P_AF_MED_DWELL_TIME); |
|
} else if (action == P2PSD_ACTION_ID_GAS_IRESP || |
|
action == P2PSD_ACTION_ID_GAS_CRESP) { |
|
/* configure service discovery response frame */ |
|
af_params->dwell_time = |
|
cpu_to_le32(P2P_AF_MIN_DWELL_TIME); |
|
} else { |
|
bphy_err(drvr, "Unknown action type: %d\n", action); |
|
goto exit; |
|
} |
|
} else if (brcmf_p2p_is_p2p_action(action_frame->data, |
|
action_frame_len)) { |
|
/* do not configure anything. it will be */ |
|
/* sent with a default configuration */ |
|
} else { |
|
bphy_err(drvr, "Unknown Frame: category 0x%x, action 0x%x\n", |
|
category, action); |
|
return false; |
|
} |
|
|
|
/* if connecting on primary iface, sleep for a while before sending |
|
* af tx for VSDB |
|
*/ |
|
if (test_bit(BRCMF_VIF_STATUS_CONNECTING, |
|
&p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->sme_state)) |
|
msleep(50); |
|
|
|
/* if scan is ongoing, abort current scan. */ |
|
if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) |
|
brcmf_abort_scanning(cfg); |
|
|
|
memcpy(afx_hdl->tx_dst_addr, action_frame->da, ETH_ALEN); |
|
|
|
/* To make sure to send successfully action frame, turn off mpc */ |
|
if (config_af_params.mpc_onoff == 0) |
|
brcmf_set_mpc(ifp, 0); |
|
|
|
/* set status and destination address before sending af */ |
|
if (p2p->next_af_subtype != P2P_PAF_SUBTYPE_INVALID) { |
|
/* set status to cancel the remained dwell time in rx process */ |
|
set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status); |
|
} |
|
|
|
p2p->af_sent_channel = 0; |
|
set_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status); |
|
/* validate channel and p2p ies */ |
|
if (config_af_params.search_channel && |
|
IS_P2P_SOCIAL_CHANNEL(le32_to_cpu(af_params->channel)) && |
|
p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->saved_ie.probe_req_ie_len) { |
|
afx_hdl = &p2p->afx_hdl; |
|
afx_hdl->peer_listen_chan = le32_to_cpu(af_params->channel); |
|
|
|
if (brcmf_p2p_af_searching_channel(p2p) == |
|
P2P_INVALID_CHANNEL) { |
|
bphy_err(drvr, "Couldn't find peer's channel.\n"); |
|
goto exit; |
|
} |
|
|
|
/* Abort scan even for VSDB scenarios. Scan gets aborted in |
|
* firmware but after the check of piggyback algorithm. To take |
|
* care of current piggback algo, lets abort the scan here |
|
* itself. |
|
*/ |
|
brcmf_notify_escan_complete(cfg, ifp, true, true); |
|
|
|
/* update channel */ |
|
af_params->channel = cpu_to_le32(afx_hdl->peer_chan); |
|
} |
|
dwell_jiffies = jiffies; |
|
dwell_overflow = brcmf_p2p_check_dwell_overflow(requested_dwell, |
|
dwell_jiffies); |
|
|
|
tx_retry = 0; |
|
while (!p2p->block_gon_req_tx && |
|
(!ack) && (tx_retry < P2P_AF_TX_MAX_RETRY) && |
|
!dwell_overflow) { |
|
if (af_params->channel) |
|
msleep(P2P_AF_RETRY_DELAY_TIME); |
|
|
|
ack = !brcmf_p2p_tx_action_frame(p2p, af_params); |
|
tx_retry++; |
|
dwell_overflow = brcmf_p2p_check_dwell_overflow(requested_dwell, |
|
dwell_jiffies); |
|
} |
|
if (!ack) { |
|
bphy_err(drvr, "Failed to send Action Frame(retry %d)\n", |
|
tx_retry); |
|
clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); |
|
} |
|
|
|
exit: |
|
clear_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status); |
|
|
|
/* WAR: sometimes dongle does not keep the dwell time of 'actframe'. |
|
* if we coundn't get the next action response frame and dongle does |
|
* not keep the dwell time, go to listen state again to get next action |
|
* response frame. |
|
*/ |
|
if (ack && config_af_params.extra_listen && !p2p->block_gon_req_tx && |
|
test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) && |
|
p2p->af_sent_channel == afx_hdl->my_listen_chan) { |
|
delta_ms = jiffies_to_msecs(jiffies - p2p->af_tx_sent_jiffies); |
|
if (le32_to_cpu(af_params->dwell_time) > delta_ms) |
|
extra_listen_time = le32_to_cpu(af_params->dwell_time) - |
|
delta_ms; |
|
else |
|
extra_listen_time = 0; |
|
if (extra_listen_time > 50) { |
|
set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, |
|
&p2p->status); |
|
brcmf_dbg(INFO, "Wait more time! actual af time:%d, calculated extra listen:%d\n", |
|
le32_to_cpu(af_params->dwell_time), |
|
extra_listen_time); |
|
extra_listen_time += 100; |
|
if (!brcmf_p2p_discover_listen(p2p, |
|
p2p->af_sent_channel, |
|
extra_listen_time)) { |
|
unsigned long duration; |
|
|
|
extra_listen_time += 100; |
|
duration = msecs_to_jiffies(extra_listen_time); |
|
wait_for_completion_timeout(&p2p->wait_next_af, |
|
duration); |
|
} |
|
clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, |
|
&p2p->status); |
|
} |
|
} |
|
|
|
if (p2p->block_gon_req_tx) { |
|
/* if ack is true, supplicant will wait more time(100ms). |
|
* so we will return it as a success to get more time . |
|
*/ |
|
p2p->block_gon_req_tx = false; |
|
ack = true; |
|
} |
|
|
|
clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status); |
|
/* if all done, turn mpc on again */ |
|
if (config_af_params.mpc_onoff == 1) |
|
brcmf_set_mpc(ifp, 1); |
|
|
|
return ack; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_notify_rx_mgmt_p2p_probereq() - Event handler for p2p probe req. |
|
* |
|
* @ifp: interface pointer for which event was received. |
|
* @e: even message. |
|
* @data: payload of event message (probe request). |
|
*/ |
|
s32 brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if *ifp, |
|
const struct brcmf_event_msg *e, |
|
void *data) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = ifp->drvr->config; |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct afx_hdl *afx_hdl = &p2p->afx_hdl; |
|
struct brcmf_cfg80211_vif *vif = ifp->vif; |
|
struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data; |
|
struct brcmu_chan ch; |
|
u8 *mgmt_frame; |
|
u32 mgmt_frame_len; |
|
s32 freq; |
|
u16 mgmt_type; |
|
|
|
brcmf_dbg(INFO, "Enter: event %d reason %d\n", e->event_code, |
|
e->reason); |
|
|
|
if (e->datalen < sizeof(*rxframe)) { |
|
brcmf_dbg(SCAN, "Event data to small. Ignore\n"); |
|
return 0; |
|
} |
|
|
|
ch.chspec = be16_to_cpu(rxframe->chanspec); |
|
cfg->d11inf.decchspec(&ch); |
|
|
|
if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status) && |
|
(ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) { |
|
afx_hdl->peer_chan = ch.control_ch_num; |
|
brcmf_dbg(INFO, "PROBE REQUEST: Peer found, channel=%d\n", |
|
afx_hdl->peer_chan); |
|
complete(&afx_hdl->act_frm_scan); |
|
} |
|
|
|
/* Firmware sends us two proberesponses for each idx one. At the */ |
|
/* moment anything but bsscfgidx 0 is passed up to supplicant */ |
|
if (e->bsscfgidx == 0) |
|
return 0; |
|
|
|
/* Filter any P2P probe reqs arriving during the GO-NEG Phase */ |
|
if (test_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status)) { |
|
brcmf_dbg(INFO, "Filtering P2P probe_req in GO-NEG phase\n"); |
|
return 0; |
|
} |
|
|
|
/* Check if wpa_supplicant has registered for this frame */ |
|
brcmf_dbg(INFO, "vif->mgmt_rx_reg %04x\n", vif->mgmt_rx_reg); |
|
mgmt_type = (IEEE80211_STYPE_PROBE_REQ & IEEE80211_FCTL_STYPE) >> 4; |
|
if ((vif->mgmt_rx_reg & BIT(mgmt_type)) == 0) |
|
return 0; |
|
|
|
mgmt_frame = (u8 *)(rxframe + 1); |
|
mgmt_frame_len = e->datalen - sizeof(*rxframe); |
|
freq = ieee80211_channel_to_frequency(ch.control_ch_num, |
|
ch.band == BRCMU_CHAN_BAND_2G ? |
|
NL80211_BAND_2GHZ : |
|
NL80211_BAND_5GHZ); |
|
|
|
cfg80211_rx_mgmt(&vif->wdev, freq, 0, mgmt_frame, mgmt_frame_len, 0); |
|
|
|
brcmf_dbg(INFO, "mgmt_frame_len (%d) , e->datalen (%d), chanspec (%04x), freq (%d)\n", |
|
mgmt_frame_len, e->datalen, ch.chspec, freq); |
|
|
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* brcmf_p2p_get_current_chanspec() - Get current operation channel. |
|
* |
|
* @p2p: P2P specific data. |
|
* @chanspec: chanspec to be returned. |
|
*/ |
|
static void brcmf_p2p_get_current_chanspec(struct brcmf_p2p_info *p2p, |
|
u16 *chanspec) |
|
{ |
|
struct brcmf_if *ifp; |
|
u8 mac_addr[ETH_ALEN]; |
|
struct brcmu_chan ch; |
|
struct brcmf_bss_info_le *bi; |
|
u8 *buf; |
|
|
|
ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; |
|
|
|
if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mac_addr, |
|
ETH_ALEN) == 0) { |
|
buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL); |
|
if (buf != NULL) { |
|
*(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX); |
|
if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO, |
|
buf, WL_BSS_INFO_MAX) == 0) { |
|
bi = (struct brcmf_bss_info_le *)(buf + 4); |
|
*chanspec = le16_to_cpu(bi->chanspec); |
|
kfree(buf); |
|
return; |
|
} |
|
kfree(buf); |
|
} |
|
} |
|
/* Use default channel for P2P */ |
|
ch.chnum = BRCMF_P2P_TEMP_CHAN; |
|
ch.bw = BRCMU_CHAN_BW_20; |
|
p2p->cfg->d11inf.encchspec(&ch); |
|
*chanspec = ch.chspec; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_ifchange - Change a P2P Role. |
|
* @cfg: driver private data for cfg80211 interface. |
|
* @if_type: interface type. |
|
* Returns 0 if success. |
|
*/ |
|
int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg, |
|
enum brcmf_fil_p2p_if_types if_type) |
|
{ |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct brcmf_pub *drvr = cfg->pub; |
|
struct brcmf_cfg80211_vif *vif; |
|
struct brcmf_fil_p2p_if_le if_request; |
|
s32 err; |
|
u16 chanspec; |
|
|
|
brcmf_dbg(TRACE, "Enter\n"); |
|
|
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; |
|
if (!vif) { |
|
bphy_err(drvr, "vif for P2PAPI_BSSCFG_PRIMARY does not exist\n"); |
|
return -EPERM; |
|
} |
|
brcmf_notify_escan_complete(cfg, vif->ifp, true, true); |
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif; |
|
if (!vif) { |
|
bphy_err(drvr, "vif for P2PAPI_BSSCFG_CONNECTION does not exist\n"); |
|
return -EPERM; |
|
} |
|
brcmf_set_mpc(vif->ifp, 0); |
|
|
|
/* In concurrency case, STA may be already associated in a particular */ |
|
/* channel. so retrieve the current channel of primary interface and */ |
|
/* then start the virtual interface on that. */ |
|
brcmf_p2p_get_current_chanspec(p2p, &chanspec); |
|
|
|
if_request.type = cpu_to_le16((u16)if_type); |
|
if_request.chspec = cpu_to_le16(chanspec); |
|
memcpy(if_request.addr, p2p->conn_int_addr, sizeof(if_request.addr)); |
|
|
|
brcmf_cfg80211_arm_vif_event(cfg, vif); |
|
err = brcmf_fil_iovar_data_set(vif->ifp, "p2p_ifupd", &if_request, |
|
sizeof(if_request)); |
|
if (err) { |
|
bphy_err(drvr, "p2p_ifupd FAILED, err=%d\n", err); |
|
brcmf_cfg80211_arm_vif_event(cfg, NULL); |
|
return err; |
|
} |
|
err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_CHANGE, |
|
BRCMF_VIF_EVENT_TIMEOUT); |
|
brcmf_cfg80211_arm_vif_event(cfg, NULL); |
|
if (!err) { |
|
bphy_err(drvr, "No BRCMF_E_IF_CHANGE event received\n"); |
|
return -EIO; |
|
} |
|
|
|
err = brcmf_fil_cmd_int_set(vif->ifp, BRCMF_C_SET_SCB_TIMEOUT, |
|
BRCMF_SCB_TIMEOUT_VALUE); |
|
|
|
return err; |
|
} |
|
|
|
static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info *p2p, |
|
struct brcmf_if *ifp, u8 ea[ETH_ALEN], |
|
enum brcmf_fil_p2p_if_types iftype) |
|
{ |
|
struct brcmf_fil_p2p_if_le if_request; |
|
int err; |
|
u16 chanspec; |
|
|
|
/* we need a default channel */ |
|
brcmf_p2p_get_current_chanspec(p2p, &chanspec); |
|
|
|
/* fill the firmware request */ |
|
memcpy(if_request.addr, ea, ETH_ALEN); |
|
if_request.type = cpu_to_le16((u16)iftype); |
|
if_request.chspec = cpu_to_le16(chanspec); |
|
|
|
err = brcmf_fil_iovar_data_set(ifp, "p2p_ifadd", &if_request, |
|
sizeof(if_request)); |
|
|
|
return err; |
|
} |
|
|
|
static int brcmf_p2p_disable_p2p_if(struct brcmf_cfg80211_vif *vif) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev); |
|
struct net_device *pri_ndev = cfg_to_ndev(cfg); |
|
struct brcmf_if *ifp = netdev_priv(pri_ndev); |
|
u8 *addr = vif->wdev.netdev->dev_addr; |
|
|
|
return brcmf_fil_iovar_data_set(ifp, "p2p_ifdis", addr, ETH_ALEN); |
|
} |
|
|
|
static int brcmf_p2p_release_p2p_if(struct brcmf_cfg80211_vif *vif) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev); |
|
struct net_device *pri_ndev = cfg_to_ndev(cfg); |
|
struct brcmf_if *ifp = netdev_priv(pri_ndev); |
|
u8 *addr = vif->wdev.netdev->dev_addr; |
|
|
|
return brcmf_fil_iovar_data_set(ifp, "p2p_ifdel", addr, ETH_ALEN); |
|
} |
|
|
|
/** |
|
* brcmf_p2p_create_p2pdev() - create a P2P_DEVICE virtual interface. |
|
* |
|
* @p2p: P2P specific data. |
|
* @wiphy: wiphy device of new interface. |
|
* @addr: mac address for this new interface. |
|
*/ |
|
static struct wireless_dev *brcmf_p2p_create_p2pdev(struct brcmf_p2p_info *p2p, |
|
struct wiphy *wiphy, |
|
u8 *addr) |
|
{ |
|
struct brcmf_pub *drvr = p2p->cfg->pub; |
|
struct brcmf_cfg80211_vif *p2p_vif; |
|
struct brcmf_if *p2p_ifp; |
|
struct brcmf_if *pri_ifp; |
|
int err; |
|
u32 bsscfgidx; |
|
|
|
if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif) |
|
return ERR_PTR(-ENOSPC); |
|
|
|
p2p_vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE); |
|
if (IS_ERR(p2p_vif)) { |
|
bphy_err(drvr, "could not create discovery vif\n"); |
|
return (struct wireless_dev *)p2p_vif; |
|
} |
|
|
|
pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; |
|
|
|
/* firmware requires unique mac address for p2pdev interface */ |
|
if (addr && ether_addr_equal(addr, pri_ifp->mac_addr)) { |
|
bphy_err(drvr, "discovery vif must be different from primary interface\n"); |
|
err = -EINVAL; |
|
goto fail; |
|
} |
|
|
|
brcmf_p2p_generate_bss_mac(p2p, addr); |
|
brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr); |
|
|
|
brcmf_cfg80211_arm_vif_event(p2p->cfg, p2p_vif); |
|
brcmf_fweh_p2pdev_setup(pri_ifp, true); |
|
|
|
/* Initialize P2P Discovery in the firmware */ |
|
err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1); |
|
if (err < 0) { |
|
bphy_err(drvr, "set p2p_disc error\n"); |
|
brcmf_fweh_p2pdev_setup(pri_ifp, false); |
|
brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL); |
|
goto fail; |
|
} |
|
|
|
/* wait for firmware event */ |
|
err = brcmf_cfg80211_wait_vif_event(p2p->cfg, BRCMF_E_IF_ADD, |
|
BRCMF_VIF_EVENT_TIMEOUT); |
|
brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL); |
|
brcmf_fweh_p2pdev_setup(pri_ifp, false); |
|
if (!err) { |
|
bphy_err(drvr, "timeout occurred\n"); |
|
err = -EIO; |
|
goto fail; |
|
} |
|
|
|
/* discovery interface created */ |
|
p2p_ifp = p2p_vif->ifp; |
|
p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif; |
|
memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN); |
|
memcpy(&p2p_vif->wdev.address, p2p->dev_addr, sizeof(p2p->dev_addr)); |
|
|
|
/* verify bsscfg index for P2P discovery */ |
|
err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bsscfgidx); |
|
if (err < 0) { |
|
bphy_err(drvr, "retrieving discover bsscfg index failed\n"); |
|
goto fail; |
|
} |
|
|
|
WARN_ON(p2p_ifp->bsscfgidx != bsscfgidx); |
|
|
|
init_completion(&p2p->send_af_done); |
|
INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler); |
|
init_completion(&p2p->afx_hdl.act_frm_scan); |
|
init_completion(&p2p->wait_next_af); |
|
|
|
return &p2p_vif->wdev; |
|
|
|
fail: |
|
brcmf_free_vif(p2p_vif); |
|
return ERR_PTR(err); |
|
} |
|
|
|
static int brcmf_p2p_get_conn_idx(struct brcmf_cfg80211_info *cfg) |
|
{ |
|
int i; |
|
struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg)); |
|
|
|
if (!ifp) |
|
return -ENODEV; |
|
|
|
for (i = P2PAPI_BSSCFG_CONNECTION; i < P2PAPI_BSSCFG_MAX; i++) { |
|
if (!cfg->p2p.bss_idx[i].vif) { |
|
if (i == P2PAPI_BSSCFG_CONNECTION2 && |
|
!(brcmf_feat_is_enabled(ifp, BRCMF_FEAT_RSDB))) { |
|
brcmf_err("Multi p2p not supported"); |
|
return -EIO; |
|
} |
|
return i; |
|
} |
|
} |
|
return -EIO; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_add_vif() - create a new P2P virtual interface. |
|
* |
|
* @wiphy: wiphy device of new interface. |
|
* @name: name of the new interface. |
|
* @name_assign_type: origin of the interface name |
|
* @type: nl80211 interface type. |
|
* @params: contains mac address for P2P device. |
|
*/ |
|
struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name, |
|
unsigned char name_assign_type, |
|
enum nl80211_iftype type, |
|
struct vif_params *params) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); |
|
struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg)); |
|
struct brcmf_pub *drvr = cfg->pub; |
|
struct brcmf_cfg80211_vif *vif; |
|
enum brcmf_fil_p2p_if_types iftype; |
|
int err = 0; |
|
int connidx; |
|
u8 *p2p_intf_addr; |
|
|
|
if (brcmf_cfg80211_vif_event_armed(cfg)) |
|
return ERR_PTR(-EBUSY); |
|
|
|
brcmf_dbg(INFO, "adding vif \"%s\" (type=%d)\n", name, type); |
|
|
|
switch (type) { |
|
case NL80211_IFTYPE_P2P_CLIENT: |
|
iftype = BRCMF_FIL_P2P_IF_CLIENT; |
|
break; |
|
case NL80211_IFTYPE_P2P_GO: |
|
iftype = BRCMF_FIL_P2P_IF_GO; |
|
break; |
|
case NL80211_IFTYPE_P2P_DEVICE: |
|
return brcmf_p2p_create_p2pdev(&cfg->p2p, wiphy, |
|
params->macaddr); |
|
default: |
|
return ERR_PTR(-EOPNOTSUPP); |
|
} |
|
|
|
vif = brcmf_alloc_vif(cfg, type); |
|
if (IS_ERR(vif)) |
|
return (struct wireless_dev *)vif; |
|
brcmf_cfg80211_arm_vif_event(cfg, vif); |
|
|
|
connidx = brcmf_p2p_get_conn_idx(cfg); |
|
|
|
if (connidx == P2PAPI_BSSCFG_CONNECTION) |
|
p2p_intf_addr = cfg->p2p.conn_int_addr; |
|
else if (connidx == P2PAPI_BSSCFG_CONNECTION2) |
|
p2p_intf_addr = cfg->p2p.conn2_int_addr; |
|
else |
|
err = -EINVAL; |
|
|
|
if (!err) |
|
err = brcmf_p2p_request_p2p_if(&cfg->p2p, ifp, |
|
p2p_intf_addr, iftype); |
|
|
|
if (err) { |
|
brcmf_err("request p2p interface failed\n"); |
|
brcmf_cfg80211_arm_vif_event(cfg, NULL); |
|
goto fail; |
|
} |
|
|
|
/* wait for firmware event */ |
|
err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_ADD, |
|
BRCMF_VIF_EVENT_TIMEOUT); |
|
brcmf_cfg80211_arm_vif_event(cfg, NULL); |
|
if (!err) { |
|
bphy_err(drvr, "timeout occurred\n"); |
|
err = -EIO; |
|
goto fail; |
|
} |
|
|
|
/* interface created in firmware */ |
|
ifp = vif->ifp; |
|
if (!ifp) { |
|
bphy_err(drvr, "no if pointer provided\n"); |
|
err = -ENOENT; |
|
goto fail; |
|
} |
|
|
|
strncpy(ifp->ndev->name, name, sizeof(ifp->ndev->name) - 1); |
|
ifp->ndev->name_assign_type = name_assign_type; |
|
err = brcmf_net_attach(ifp, true); |
|
if (err) { |
|
bphy_err(drvr, "Registering netdevice failed\n"); |
|
free_netdev(ifp->ndev); |
|
goto fail; |
|
} |
|
|
|
cfg->p2p.bss_idx[connidx].vif = vif; |
|
/* Disable firmware roaming for P2P interface */ |
|
brcmf_fil_iovar_int_set(ifp, "roam_off", 1); |
|
if (iftype == BRCMF_FIL_P2P_IF_GO) { |
|
/* set station timeout for p2p */ |
|
brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCB_TIMEOUT, |
|
BRCMF_SCB_TIMEOUT_VALUE); |
|
} |
|
return &ifp->vif->wdev; |
|
|
|
fail: |
|
brcmf_free_vif(vif); |
|
return ERR_PTR(err); |
|
} |
|
|
|
/** |
|
* brcmf_p2p_del_vif() - delete a P2P virtual interface. |
|
* |
|
* @wiphy: wiphy device of interface. |
|
* @wdev: wireless device of interface. |
|
*/ |
|
int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct brcmf_cfg80211_vif *vif; |
|
enum nl80211_iftype iftype; |
|
bool wait_for_disable = false; |
|
int err; |
|
|
|
brcmf_dbg(TRACE, "delete P2P vif\n"); |
|
vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); |
|
|
|
iftype = vif->wdev.iftype; |
|
brcmf_cfg80211_arm_vif_event(cfg, vif); |
|
switch (iftype) { |
|
case NL80211_IFTYPE_P2P_CLIENT: |
|
if (test_bit(BRCMF_VIF_STATUS_DISCONNECTING, &vif->sme_state)) |
|
wait_for_disable = true; |
|
break; |
|
|
|
case NL80211_IFTYPE_P2P_GO: |
|
if (!brcmf_p2p_disable_p2p_if(vif)) |
|
wait_for_disable = true; |
|
break; |
|
|
|
case NL80211_IFTYPE_P2P_DEVICE: |
|
if (!p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif) |
|
return 0; |
|
brcmf_p2p_cancel_remain_on_channel(vif->ifp); |
|
brcmf_p2p_deinit_discovery(p2p); |
|
break; |
|
|
|
default: |
|
return -ENOTSUPP; |
|
} |
|
|
|
clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); |
|
brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n"); |
|
|
|
if (wait_for_disable) |
|
wait_for_completion_timeout(&cfg->vif_disabled, |
|
BRCMF_P2P_DISABLE_TIMEOUT); |
|
|
|
err = 0; |
|
if (iftype != NL80211_IFTYPE_P2P_DEVICE) { |
|
brcmf_vif_clear_mgmt_ies(vif); |
|
err = brcmf_p2p_release_p2p_if(vif); |
|
} |
|
if (!err) { |
|
/* wait for firmware event */ |
|
err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_DEL, |
|
BRCMF_VIF_EVENT_TIMEOUT); |
|
if (!err) |
|
err = -EIO; |
|
else |
|
err = 0; |
|
} |
|
brcmf_remove_interface(vif->ifp, true); |
|
|
|
brcmf_cfg80211_arm_vif_event(cfg, NULL); |
|
if (iftype != NL80211_IFTYPE_P2P_DEVICE) |
|
p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL; |
|
|
|
return err; |
|
} |
|
|
|
void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool locked) |
|
{ |
|
struct brcmf_cfg80211_info *cfg; |
|
struct brcmf_cfg80211_vif *vif; |
|
|
|
brcmf_dbg(INFO, "P2P: device interface removed\n"); |
|
vif = ifp->vif; |
|
cfg = wdev_to_cfg(&vif->wdev); |
|
cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL; |
|
if (!locked) { |
|
rtnl_lock(); |
|
wiphy_lock(cfg->wiphy); |
|
cfg80211_unregister_wdev(&vif->wdev); |
|
wiphy_unlock(cfg->wiphy); |
|
rtnl_unlock(); |
|
} else { |
|
cfg80211_unregister_wdev(&vif->wdev); |
|
} |
|
brcmf_free_vif(vif); |
|
} |
|
|
|
int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct brcmf_cfg80211_vif *vif; |
|
int err; |
|
|
|
vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); |
|
mutex_lock(&cfg->usr_sync); |
|
err = brcmf_p2p_enable_discovery(p2p); |
|
if (!err) |
|
set_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state); |
|
mutex_unlock(&cfg->usr_sync); |
|
return err; |
|
} |
|
|
|
void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev) |
|
{ |
|
struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); |
|
struct brcmf_p2p_info *p2p = &cfg->p2p; |
|
struct brcmf_cfg80211_vif *vif; |
|
|
|
vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); |
|
/* This call can be result of the unregister_wdev call. In that case |
|
* we dont want to do anything anymore. Just return. The config vif |
|
* will have been cleared at this point. |
|
*/ |
|
if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif == vif) { |
|
mutex_lock(&cfg->usr_sync); |
|
/* Set the discovery state to SCAN */ |
|
(void)brcmf_p2p_set_discover_state(vif->ifp, |
|
WL_P2P_DISC_ST_SCAN, 0, 0); |
|
brcmf_abort_scanning(cfg); |
|
clear_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state); |
|
mutex_unlock(&cfg->usr_sync); |
|
} |
|
} |
|
|
|
/** |
|
* brcmf_p2p_attach() - attach for P2P. |
|
* |
|
* @cfg: driver private data for cfg80211 interface. |
|
* @p2pdev_forced: create p2p device interface at attach. |
|
*/ |
|
s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg, bool p2pdev_forced) |
|
{ |
|
struct brcmf_pub *drvr = cfg->pub; |
|
struct brcmf_p2p_info *p2p; |
|
struct brcmf_if *pri_ifp; |
|
s32 err = 0; |
|
void *err_ptr; |
|
|
|
p2p = &cfg->p2p; |
|
p2p->cfg = cfg; |
|
|
|
pri_ifp = brcmf_get_ifp(cfg->pub, 0); |
|
p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif = pri_ifp->vif; |
|
|
|
if (p2pdev_forced) { |
|
err_ptr = brcmf_p2p_create_p2pdev(p2p, NULL, NULL); |
|
if (IS_ERR(err_ptr)) { |
|
bphy_err(drvr, "P2P device creation failed.\n"); |
|
err = PTR_ERR(err_ptr); |
|
} |
|
} else { |
|
p2p->p2pdev_dynamically = true; |
|
} |
|
return err; |
|
} |
|
|
|
/** |
|
* brcmf_p2p_detach() - detach P2P. |
|
* |
|
* @p2p: P2P specific data. |
|
*/ |
|
void brcmf_p2p_detach(struct brcmf_p2p_info *p2p) |
|
{ |
|
struct brcmf_cfg80211_vif *vif; |
|
|
|
vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; |
|
if (vif != NULL) { |
|
brcmf_p2p_cancel_remain_on_channel(vif->ifp); |
|
brcmf_p2p_deinit_discovery(p2p); |
|
brcmf_remove_interface(vif->ifp, false); |
|
} |
|
/* just set it all to zero */ |
|
memset(p2p, 0, sizeof(*p2p)); |
|
} |
|
|
|
|