diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/p2p.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/p2p.c | 2401 |
1 files changed, 0 insertions, 2401 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c deleted file mode 100644 index d224b3dd7..000000000 --- a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c +++ /dev/null @@ -1,2401 +0,0 @@ -/* - * Copyright (c) 2012 Broadcom Corporation - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY - * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN - * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ -#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 2000 -#define P2P_INVALID_CHANNEL -1 -#define P2P_CHANNEL_SYNC_RETRY 5 -#define P2P_AF_FRM_SCAN_MAX_WAIT 1500 -#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 */ - -/** - * 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) -{ - 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) - brcmf_err("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 the primary net device, ie. - * the permanent ethernet address of the device. - */ -static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr) -{ - struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; - bool local_admin = false; - - if (!dev_addr || is_zero_ether_addr(dev_addr)) { - dev_addr = pri_ifp->mac_addr; - local_admin = true; - } - - /* Generate the P2P Device Address. This consists of the device's - * primary MAC address with the locally administered bit set. - */ - 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->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_cfg80211_vif *vif; - s32 ret = 0; - - brcmf_dbg(TRACE, "enter\n"); - vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; - if (!vif) { - brcmf_err("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) { - brcmf_err("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) { - brcmf_err("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) { - brcmf_err("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. - * @action: scan action to pass to firmware. - * @bss_type: type of P2P bss. - */ -static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans, - u16 chanspecs[], s32 search_state, u16 action, - enum p2p_bss_type bss_type) -{ - 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; - struct brcmf_ssid ssid; - - memsize += num_chans * sizeof(__le16); - memblk = kzalloc(memsize, GFP_KERNEL); - if (!memblk) - return -ENOMEM; - - vif = p2p->bss_idx[bss_type].vif; - if (vif == NULL) { - brcmf_err("no vif for bss type %d\n", bss_type); - ret = -EINVAL; - goto exit; - } - - 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 */ - ssid.SSID_len = 0; - memset(ssid.SSID, 0, sizeof(ssid.SSID)); - 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. - */ - ssid.SSID_len = BRCMF_P2P_WILDCARD_SSID_LEN; - memcpy(ssid.SSID, BRCMF_P2P_WILDCARD_SSID, ssid.SSID_len); - break; - default: - brcmf_err(" 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 = (struct brcmf_p2p_scan_le *)memblk; - p2p_params->type = 'E'; - - /* determine the scan engine parameters */ - sparams = &p2p_params->eparams.params_le; - sparams->bss_type = DOT11_BSSTYPE_ANY; - if (p2p->cfg->active_scan) - sparams->scan_type = 0; - else - sparams->scan_type = 1; - - eth_broadcast_addr(sparams->bssid); - if (ssid.SSID_len) - memcpy(sparams->ssid_le.SSID, ssid.SSID, ssid.SSID_len); - sparams->ssid_le.SSID_len = cpu_to_le32(ssid.SSID_len); - 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(action); - 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, - u16 action) -{ - struct brcmf_p2p_info *p2p = &cfg->p2p; - 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, - action, P2PAPI_BSSCFG_DEVICE); - kfree(chanspecs); - } -exit: - if (err) - brcmf_err("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 = 0; - - 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; - } - err = brcmf_vif_set_mgmt_ie(vif, BRCMF_VNDR_IE_PRBREQ_FLAG, - request->ie, request->ie_len); - return err; -} - - -/** - * 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_cfg80211_vif *vif; - struct brcmu_chan ch; - s32 err = 0; - - vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; - if (!vif) { - brcmf_err("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)) { - brcmf_err("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) -{ - 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 = kzalloc(channel_cnt * sizeof(*default_chan_list), - GFP_KERNEL); - if (default_chan_list == NULL) { - brcmf_err("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, WL_ESCAN_ACTION_START, - 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); - 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) { - brcmf_err("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; - unsigned long duration; - 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; - duration = msecs_to_jiffies(P2P_AF_FRM_SCAN_MAX_WAIT); - 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, duration); - 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, - duration); - } - 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.chnum; - } - 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 = cfg->escan_info.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_cfg80211_info *cfg = ifp->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; - - 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.chnum; - 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) { - brcmf_err("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.chnum, - ch.band == BRCMU_CHAN_BAND_2G ? - IEEE80211_BAND_2GHZ : - IEEE80211_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); - 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_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) { - brcmf_err(" sending action frame has failed\n"); - goto exit; - } - - p2p->af_sent_channel = le32_to_cpu(af_params->channel); - p2p->af_tx_sent_jiffies = jiffies; - - timeout = wait_for_completion_timeout(&p2p->send_af_done, - msecs_to_jiffies(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_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: - brcmf_err("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; - 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. */ - brcmf_err("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 { - brcmf_err("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 { - brcmf_err("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) { - brcmf_err("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) { - brcmf_err("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; - u16 chanspec = be16_to_cpu(rxframe->chanspec); - 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); - - 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.chnum; - 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.chnum, - ch.band == BRCMU_CHAN_BAND_2G ? - IEEE80211_BAND_2GHZ : - IEEE80211_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, chanspec, 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_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) { - brcmf_err("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) { - brcmf_err("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) { - brcmf_err("p2p_ifupd FAILED, err=%d\n", err); - brcmf_cfg80211_arm_vif_event(cfg, NULL); - return err; - } - err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_CHANGE, - msecs_to_jiffies(1500)); - brcmf_cfg80211_arm_vif_event(cfg, NULL); - if (!err) { - brcmf_err("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)); - if (err) - return err; - - 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_cfg80211_vif *p2p_vif; - struct brcmf_if *p2p_ifp; - struct brcmf_if *pri_ifp; - int err; - u32 bssidx; - - if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif) - return ERR_PTR(-ENOSPC); - - p2p_vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE, - false); - if (IS_ERR(p2p_vif)) { - brcmf_err("could not create discovery vif\n"); - return (struct wireless_dev *)p2p_vif; - } - - pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; - 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) { - brcmf_err("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_timeout(p2p->cfg, BRCMF_E_IF_ADD, - msecs_to_jiffies(1500)); - brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL); - brcmf_fweh_p2pdev_setup(pri_ifp, false); - if (!err) { - brcmf_err("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", &bssidx); - if (err < 0) { - brcmf_err("retrieving discover bsscfg index failed\n"); - goto fail; - } - - WARN_ON(p2p_ifp->bssidx != bssidx); - - 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. - * @flags: not used. - * @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, u32 *flags, - 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_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, false); - 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_timeout(cfg, BRCMF_E_IF_ADD, - msecs_to_jiffies(1500)); - brcmf_cfg80211_arm_vif_event(cfg, NULL); - if (!err) { - brcmf_err("timeout occurred\n"); - err = -EIO; - goto fail; - } - - /* interface created in firmware */ - ifp = vif->ifp; - if (!ifp) { - brcmf_err("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) { - brcmf_err("Registering netdevice failed\n"); - 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_priv(wiphy); - struct brcmf_p2p_info *p2p = &cfg->p2p; - struct brcmf_cfg80211_vif *vif; - unsigned long jiffie_timeout = msecs_to_jiffies(1500); - bool wait_for_disable = false; - int err; - - brcmf_dbg(TRACE, "delete P2P vif\n"); - vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); - - brcmf_cfg80211_arm_vif_event(cfg, vif); - switch (vif->wdev.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); - 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, - msecs_to_jiffies(500)); - - err = 0; - if (vif->wdev.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_timeout(cfg, BRCMF_E_IF_DEL, - jiffie_timeout); - if (!err) - err = -EIO; - else - err = 0; - } - if (err) - brcmf_remove_interface(vif->ifp); - - brcmf_cfg80211_arm_vif_event(cfg, NULL); - if (vif->wdev.iftype != NL80211_IFTYPE_P2P_DEVICE) - p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL; - - return err; -} - -void brcmf_p2p_ifp_removed(struct brcmf_if *ifp) -{ - 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; - rtnl_lock(); - cfg80211_unregister_wdev(&vif->wdev); - 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_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)) { - brcmf_err("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); - } - /* just set it all to zero */ - memset(p2p, 0, sizeof(*p2p)); -} - |