| // SPDX-License-Identifier: ISC |
| /* |
| * Copyright (c) 2012 Broadcom Corporation |
| */ |
| #include <linux/slab.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/rtnetlink.h> |
| #include <net/cfg80211.h> |
| |
| #include <brcmu_wifi.h> |
| #include <brcmu_utils.h> |
| #include <defs.h> |
| #include "core.h" |
| #include "debug.h" |
| #include "fwil.h" |
| #include "fwil_types.h" |
| #include "p2p.h" |
| #include "cfg80211.h" |
| |
| /* parameters used for p2p escan */ |
| #define P2PAPI_SCAN_NPROBES 1 |
| #define P2PAPI_SCAN_DWELL_TIME_MS 80 |
| #define P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS 40 |
| #define P2PAPI_SCAN_HOME_TIME_MS 60 |
| #define P2PAPI_SCAN_NPROBS_TIME_MS 30 |
| #define P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS 100 |
| #define WL_SCAN_CONNECT_DWELL_TIME_MS 200 |
| #define WL_SCAN_JOIN_PROBE_INTERVAL_MS 20 |
| |
| #define BRCMF_P2P_WILDCARD_SSID "DIRECT-" |
| #define BRCMF_P2P_WILDCARD_SSID_LEN (sizeof(BRCMF_P2P_WILDCARD_SSID) - 1) |
| |
| #define SOCIAL_CHAN_1 1 |
| #define SOCIAL_CHAN_2 6 |
| #define SOCIAL_CHAN_3 11 |
| #define IS_P2P_SOCIAL_CHANNEL(channel) ((channel == SOCIAL_CHAN_1) || \ |
| (channel == SOCIAL_CHAN_2) || \ |
| (channel == SOCIAL_CHAN_3)) |
| #define BRCMF_P2P_TEMP_CHAN SOCIAL_CHAN_3 |
| #define SOCIAL_CHAN_CNT 3 |
| #define AF_PEER_SEARCH_CNT 2 |
| |
| #define BRCMF_SCB_TIMEOUT_VALUE 20 |
| |
| #define P2P_VER 9 /* P2P version: 9=WiFi P2P v1.0 */ |
| #define P2P_PUB_AF_CATEGORY 0x04 |
| #define P2P_PUB_AF_ACTION 0x09 |
| #define P2P_AF_CATEGORY 0x7f |
| #define P2P_OUI "\x50\x6F\x9A" /* P2P OUI */ |
| #define P2P_OUI_LEN 3 /* P2P OUI length */ |
| |
| /* Action Frame Constants */ |
| #define DOT11_ACTION_HDR_LEN 2 /* action frame category + action */ |
| #define DOT11_ACTION_CAT_OFF 0 /* category offset */ |
| #define DOT11_ACTION_ACT_OFF 1 /* action offset */ |
| |
| #define P2P_AF_DWELL_TIME 200 |
| #define P2P_AF_MIN_DWELL_TIME 100 |
| #define P2P_AF_MED_DWELL_TIME 400 |
| #define P2P_AF_LONG_DWELL_TIME 1000 |
| #define P2P_AF_TX_MAX_RETRY 1 |
| #define P2P_AF_MAX_WAIT_TIME msecs_to_jiffies(2000) |
| #define P2P_INVALID_CHANNEL -1 |
| #define P2P_CHANNEL_SYNC_RETRY 5 |
| #define P2P_AF_FRM_SCAN_MAX_WAIT msecs_to_jiffies(450) |
| #define P2P_DEFAULT_SLEEP_TIME_VSDB 200 |
| |
| /* WiFi P2P Public Action Frame OUI Subtypes */ |
| #define P2P_PAF_GON_REQ 0 /* Group Owner Negotiation Req */ |
| #define P2P_PAF_GON_RSP 1 /* Group Owner Negotiation Rsp */ |
| #define P2P_PAF_GON_CONF 2 /* Group Owner Negotiation Confirm */ |
| #define P2P_PAF_INVITE_REQ 3 /* P2P Invitation Request */ |
| #define P2P_PAF_INVITE_RSP 4 /* P2P Invitation Response */ |
| #define P2P_PAF_DEVDIS_REQ 5 /* Device Discoverability Request */ |
| #define P2P_PAF_DEVDIS_RSP 6 /* Device Discoverability Response */ |
| #define P2P_PAF_PROVDIS_REQ 7 /* Provision Discovery Request */ |
| #define P2P_PAF_PROVDIS_RSP 8 /* Provision Discovery Response */ |
| #define P2P_PAF_SUBTYPE_INVALID 255 /* Invalid Subtype */ |
| |
| /* WiFi P2P Action Frame OUI Subtypes */ |
| #define P2P_AF_NOTICE_OF_ABSENCE 0 /* Notice of Absence */ |
| #define P2P_AF_PRESENCE_REQ 1 /* P2P Presence Request */ |
| #define P2P_AF_PRESENCE_RSP 2 /* P2P Presence Response */ |
| #define P2P_AF_GO_DISC_REQ 3 /* GO Discoverability Request */ |
| |
| /* P2P Service Discovery related */ |
| #define P2PSD_ACTION_CATEGORY 0x04 /* Public action frame */ |
| #define P2PSD_ACTION_ID_GAS_IREQ 0x0a /* GAS Initial Request AF */ |
| #define P2PSD_ACTION_ID_GAS_IRESP 0x0b /* GAS Initial Response AF */ |
| #define P2PSD_ACTION_ID_GAS_CREQ 0x0c /* GAS Comback Request AF */ |
| #define P2PSD_ACTION_ID_GAS_CRESP 0x0d /* GAS Comback Response AF */ |
| |
| #define BRCMF_P2P_DISABLE_TIMEOUT msecs_to_jiffies(500) |
| /** |
| * struct brcmf_p2p_disc_st_le - set discovery state in firmware. |
| * |
| * @state: requested discovery state (see enum brcmf_p2p_disc_state). |
| * @chspec: channel parameter for %WL_P2P_DISC_ST_LISTEN state. |
| * @dwell: dwell time in ms for %WL_P2P_DISC_ST_LISTEN state. |
| */ |
| struct brcmf_p2p_disc_st_le { |
| u8 state; |
| __le16 chspec; |
| __le16 dwell; |
| }; |
| |
| /** |
| * enum brcmf_p2p_disc_state - P2P discovery state values |
| * |
| * @WL_P2P_DISC_ST_SCAN: P2P discovery with wildcard SSID and P2P IE. |
| * @WL_P2P_DISC_ST_LISTEN: P2P discovery off-channel for specified time. |
| * @WL_P2P_DISC_ST_SEARCH: P2P discovery with P2P wildcard SSID and P2P IE. |
| */ |
| enum brcmf_p2p_disc_state { |
| WL_P2P_DISC_ST_SCAN, |
| WL_P2P_DISC_ST_LISTEN, |
| WL_P2P_DISC_ST_SEARCH |
| }; |
| |
| /** |
| * struct brcmf_p2p_scan_le - P2P specific scan request. |
| * |
| * @type: type of scan method requested (values: 'E' or 'S'). |
| * @reserved: reserved (ignored). |
| * @eparams: parameters used for type 'E'. |
| * @sparams: parameters used for type 'S'. |
| */ |
| struct brcmf_p2p_scan_le { |
| u8 type; |
| u8 reserved[3]; |
| union { |
| struct brcmf_escan_params_le eparams; |
| struct brcmf_scan_params_le sparams; |
| }; |
| }; |
| |
| /** |
| * struct brcmf_p2p_pub_act_frame - WiFi P2P Public Action Frame |
| * |
| * @category: P2P_PUB_AF_CATEGORY |
| * @action: P2P_PUB_AF_ACTION |
| * @oui[3]: P2P_OUI |
| * @oui_type: OUI type - P2P_VER |
| * @subtype: OUI subtype - P2P_TYPE_* |
| * @dialog_token: nonzero, identifies req/rsp transaction |
| * @elts[1]: Variable length information elements. |
| */ |
| struct brcmf_p2p_pub_act_frame { |
| u8 category; |
| u8 action; |
| u8 oui[3]; |
| u8 oui_type; |
| u8 subtype; |
| u8 dialog_token; |
| u8 elts[1]; |
| }; |
| |
| /** |
| * struct brcmf_p2p_action_frame - WiFi P2P Action Frame |
| * |
| * @category: P2P_AF_CATEGORY |
| * @OUI[3]: OUI - P2P_OUI |
| * @type: OUI Type - P2P_VER |
| * @subtype: OUI Subtype - P2P_AF_* |
| * @dialog_token: nonzero, identifies req/resp tranaction |
| * @elts[1]: Variable length information elements. |
| */ |
| struct brcmf_p2p_action_frame { |
| u8 category; |
| u8 oui[3]; |
| u8 type; |
| u8 subtype; |
| u8 dialog_token; |
| u8 elts[1]; |
| }; |
| |
| /** |
| * struct brcmf_p2psd_gas_pub_act_frame - Wi-Fi GAS Public Action Frame |
| * |
| * @category: 0x04 Public Action Frame |
| * @action: 0x6c Advertisement Protocol |
| * @dialog_token: nonzero, identifies req/rsp transaction |
| * @query_data[1]: Query Data. SD gas ireq SD gas iresp |
| */ |
| struct brcmf_p2psd_gas_pub_act_frame { |
| u8 category; |
| u8 action; |
| u8 dialog_token; |
| u8 query_data[1]; |
| }; |
| |
| /** |
| * struct brcmf_config_af_params - Action Frame Parameters for tx. |
| * |
| * @mpc_onoff: To make sure to send successfully action frame, we have to |
| * turn off mpc 0: off, 1: on, (-1): do nothing |
| * @search_channel: 1: search peer's channel to send af |
| * extra_listen: keep the dwell time to get af response frame. |
| */ |
| struct brcmf_config_af_params { |
| s32 mpc_onoff; |
| bool search_channel; |
| bool extra_listen; |
| }; |
| |
| /** |
| * brcmf_p2p_is_pub_action() - true if p2p public type frame. |
| * |
| * @frame: action frame data. |
| * @frame_len: length of action frame data. |
| * |
| * Determine if action frame is p2p public action type |
| */ |
| static bool brcmf_p2p_is_pub_action(void *frame, u32 frame_len) |
| { |
| struct brcmf_p2p_pub_act_frame *pact_frm; |
| |
| if (frame == NULL) |
| return false; |
| |
| pact_frm = (struct brcmf_p2p_pub_act_frame *)frame; |
| if (frame_len < sizeof(struct brcmf_p2p_pub_act_frame) - 1) |
| return false; |
| |
| if (pact_frm->category == P2P_PUB_AF_CATEGORY && |
| pact_frm->action == P2P_PUB_AF_ACTION && |
| pact_frm->oui_type == P2P_VER && |
| memcmp(pact_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0) |
| return true; |
| |
| return false; |
| } |
| |
| /** |
| * brcmf_p2p_is_p2p_action() - true if p2p action type frame. |
| * |
| * @frame: action frame data. |
| * @frame_len: length of action frame data. |
| * |
| * Determine if action frame is p2p action type |
| */ |
| static bool brcmf_p2p_is_p2p_action(void *frame, u32 frame_len) |
| { |
| struct brcmf_p2p_action_frame *act_frm; |
| |
| if (frame == NULL) |
| return false; |
| |
| act_frm = (struct brcmf_p2p_action_frame *)frame; |
| if (frame_len < sizeof(struct brcmf_p2p_action_frame) - 1) |
| return false; |
| |
| if (act_frm->category == P2P_AF_CATEGORY && |
| act_frm->type == P2P_VER && |
| memcmp(act_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0) |
| return true; |
| |
| return false; |
| } |
| |
| /** |
| * brcmf_p2p_is_gas_action() - true if p2p gas action type frame. |
| * |
| * @frame: action frame data. |
| * @frame_len: length of action frame data. |
| * |
| * Determine if action frame is p2p gas action type |
| */ |
| static bool brcmf_p2p_is_gas_action(void *frame, u32 frame_len) |
| { |
| struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; |
| |
| if (frame == NULL) |
| return false; |
| |
| sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; |
| if (frame_len < sizeof(struct brcmf_p2psd_gas_pub_act_frame) - 1) |
| return false; |
| |
| if (sd_act_frm->category != P2PSD_ACTION_CATEGORY) |
| return false; |
| |
| if (sd_act_frm->action == P2PSD_ACTION_ID_GAS_IREQ || |
| sd_act_frm->action == P2PSD_ACTION_ID_GAS_IRESP || |
| sd_act_frm->action == P2PSD_ACTION_ID_GAS_CREQ || |
| sd_act_frm->action == P2PSD_ACTION_ID_GAS_CRESP) |
| return true; |
| |
| return false; |
| } |
| |
| /** |
| * brcmf_p2p_print_actframe() - debug print routine. |
| * |
| * @tx: Received or to be transmitted |
| * @frame: action frame data. |
| * @frame_len: length of action frame data. |
| * |
| * Print information about the p2p action frame |
| */ |
| |
| #ifdef DEBUG |
| |
| static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len) |
| { |
| struct brcmf_p2p_pub_act_frame *pact_frm; |
| struct brcmf_p2p_action_frame *act_frm; |
| struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; |
| |
| if (!frame || frame_len <= 2) |
| return; |
| |
| if (brcmf_p2p_is_pub_action(frame, frame_len)) { |
| pact_frm = (struct brcmf_p2p_pub_act_frame *)frame; |
| switch (pact_frm->subtype) { |
| case P2P_PAF_GON_REQ: |
| brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Req Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_PAF_GON_RSP: |
| brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Rsp Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_PAF_GON_CONF: |
| brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Confirm Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_PAF_INVITE_REQ: |
| brcmf_dbg(TRACE, "%s P2P Invitation Request Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_PAF_INVITE_RSP: |
| brcmf_dbg(TRACE, "%s P2P Invitation Response Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_PAF_DEVDIS_REQ: |
| brcmf_dbg(TRACE, "%s P2P Device Discoverability Request Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_PAF_DEVDIS_RSP: |
| brcmf_dbg(TRACE, "%s P2P Device Discoverability Response Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_PAF_PROVDIS_REQ: |
| brcmf_dbg(TRACE, "%s P2P Provision Discovery Request Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_PAF_PROVDIS_RSP: |
| brcmf_dbg(TRACE, "%s P2P Provision Discovery Response Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| default: |
| brcmf_dbg(TRACE, "%s Unknown P2P Public Action Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| } |
| } else if (brcmf_p2p_is_p2p_action(frame, frame_len)) { |
| act_frm = (struct brcmf_p2p_action_frame *)frame; |
| switch (act_frm->subtype) { |
| case P2P_AF_NOTICE_OF_ABSENCE: |
| brcmf_dbg(TRACE, "%s P2P Notice of Absence Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_AF_PRESENCE_REQ: |
| brcmf_dbg(TRACE, "%s P2P Presence Request Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_AF_PRESENCE_RSP: |
| brcmf_dbg(TRACE, "%s P2P Presence Response Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2P_AF_GO_DISC_REQ: |
| brcmf_dbg(TRACE, "%s P2P Discoverability Request Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| default: |
| brcmf_dbg(TRACE, "%s Unknown P2P Action Frame\n", |
| (tx) ? "TX" : "RX"); |
| } |
| |
| } else if (brcmf_p2p_is_gas_action(frame, frame_len)) { |
| sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; |
| switch (sd_act_frm->action) { |
| case P2PSD_ACTION_ID_GAS_IREQ: |
| brcmf_dbg(TRACE, "%s P2P GAS Initial Request\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2PSD_ACTION_ID_GAS_IRESP: |
| brcmf_dbg(TRACE, "%s P2P GAS Initial Response\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2PSD_ACTION_ID_GAS_CREQ: |
| brcmf_dbg(TRACE, "%s P2P GAS Comback Request\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| case P2PSD_ACTION_ID_GAS_CRESP: |
| brcmf_dbg(TRACE, "%s P2P GAS Comback Response\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| default: |
| brcmf_dbg(TRACE, "%s Unknown P2P GAS Frame\n", |
| (tx) ? "TX" : "RX"); |
| break; |
| } |
| } |
| } |
| |
| #else |
| |
| static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len) |
| { |
| } |
| |
| #endif |
| |
| |
| /** |
| * brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation. |
| * |
| * @ifp: ifp to use for iovars (primary). |
| * @p2p_mac: mac address to configure for p2p_da_override |
| */ |
| static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac) |
| { |
| struct brcmf_pub *drvr = ifp->drvr; |
| s32 ret = 0; |
| |
| brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1); |
| brcmf_fil_iovar_int_set(ifp, "apsta", 1); |
| brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1); |
| |
| /* In case of COB type, firmware has default mac address |
| * After Initializing firmware, we have to set current mac address to |
| * firmware for P2P device address. This must be done with discovery |
| * disabled. |
| */ |
| brcmf_fil_iovar_int_set(ifp, "p2p_disc", 0); |
| |
| ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac, |
| ETH_ALEN); |
| if (ret) |
| bphy_err(drvr, "failed to update device address ret %d\n", ret); |
| |
| return ret; |
| } |
| |
| /** |
| * brcmf_p2p_generate_bss_mac() - derive mac addresses for P2P. |
| * |
| * @p2p: P2P specific data. |
| * @dev_addr: optional device address. |
| * |
| * P2P needs mac addresses for P2P device and interface. If no device |
| * address it specified, these are derived from a random ethernet |
| * address. |
| */ |
| static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr) |
| { |
| bool random_addr = false; |
| |
| if (!dev_addr || is_zero_ether_addr(dev_addr)) |
| random_addr = true; |
| |
| /* Generate the P2P Device Address obtaining a random ethernet |
| * address with the locally administered bit set. |
| */ |
| if (random_addr) |
| eth_random_addr(p2p->dev_addr); |
| else |
| memcpy(p2p->dev_addr, dev_addr, ETH_ALEN); |
| |
| /* 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->int_addr, p2p->dev_addr, ETH_ALEN); |
| p2p->int_addr[0] |= 0x02; |
| p2p->int_addr[4] ^= 0x80; |
| } |
| |
| /** |
| * 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. |
| * @ndev: net device for which scan is requested. |
| * @request: scan request from cfg80211. |
| * @action: scan action. |
| * |
| * 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; |
| |
| vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; |
| |
| /* 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. |
| * @channel: channel to stay on. |
| * @duration: time in ms to remain on channel. |
| * |
| */ |
| 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_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; |
| |
| 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) |
| 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. |
| * |
| * 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; |
| s32 err = 0; |
| s32 timeout = 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); |
| |
| 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"); |
| |
| timeout = 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; |
| } |
| |
| /** |
| * 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; |
| |
| 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); |
| } |
| |
| tx_retry = 0; |
| while (!p2p->block_gon_req_tx && |
| (ack == false) && (tx_retry < P2P_AF_TX_MAX_RETRY)) { |
| ack = !brcmf_p2p_tx_action_frame(p2p, af_params); |
| tx_retry++; |
| } |
| if (ack == false) { |
| 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; |
| } |
| |
| /** |
| * Change a P2P Role. |
| * Parameters: |
| * @mac: MAC address of the BSS to change a role |
| * 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->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); |
| } |
| |
| /** |
| * 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; |
| |
| 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); |
| |
| err = brcmf_p2p_request_p2p_if(&cfg->p2p, ifp, cfg->p2p.int_addr, |
| iftype); |
| if (err) { |
| 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[P2PAPI_BSSCFG_CONNECTION].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 rtnl_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 (!rtnl_locked) |
| rtnl_lock(); |
| cfg80211_unregister_wdev(&vif->wdev); |
| if (!rtnl_locked) |
| rtnl_unlock(); |
| 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)); |
| } |
| |