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- /*
- * 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 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_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));
- }
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