From: Hante Meuleman <meuleman@xxxxxxxxxxxx>
This patch adds e-scan support (currently i-scan is in use). E-scan
is a more powerful and memory efficient method for scanning. E-scan
will be the default scan method and eventually, i-scan support will
be removed. The scan methods do not make any difference to the end-user.
Reviewed-by: Arend Van Spriel <arend@xxxxxxxxxxxx>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@xxxxxxxxxxxx>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@xxxxxxxxxxxx>
Signed-off-by: Hante Meuleman <meuleman@xxxxxxxxxxxx>
Signed-off-by: Arend van Spriel <arend@xxxxxxxxxxxx>
---
drivers/net/wireless/brcm80211/Kconfig | 8 +
drivers/net/wireless/brcm80211/brcmfmac/dhd.h | 22 +
.../net/wireless/brcm80211/brcmfmac/dhd_common.c | 8 +-
.../net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 522 +++++++++++++++++++-
.../net/wireless/brcm80211/brcmfmac/wl_cfg80211.h | 25 +
5 files changed, 583 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/brcm80211/Kconfig b/drivers/net/wireless/brcm80211/Kconfig
index b480088..c9d811e 100644
--- a/drivers/net/wireless/brcm80211/Kconfig
+++ b/drivers/net/wireless/brcm80211/Kconfig
@@ -55,6 +55,14 @@ config BRCMFMAC_USB
IEEE802.11n embedded FullMAC WLAN driver. Say Y if you want to
use the driver for an USB wireless card.
+config BRCMISCAN
+ bool "Broadcom I-Scan (OBSOLETE)"
+ depends on BRCMFMAC
+ ---help---
+ This option enables the I-Scan method. By default fullmac uses the
+ new E-Scan method which uses less memory in firmware and gives no
+ limitation on the number of scan results.
+
config BRCMDBG
bool "Broadcom driver debug functions"
depends on BRCMSMAC || BRCMFMAC
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd.h b/drivers/net/wireless/brcm80211/brcmfmac/dhd.h
index 9e2fb5b..4766d9f 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd.h
@@ -130,6 +130,10 @@
#define BRCMF_EVENT_MSG_FLUSHTXQ 0x02
#define BRCMF_EVENT_MSG_GROUP 0x04
+#define BRCMF_ESCAN_REQ_VERSION 1
+
+#define WLC_BSS_RSSI_ON_CHANNEL 0x0002
+
struct brcmf_event_msg {
__be16 version;
__be16 flags;
@@ -456,6 +460,24 @@ struct brcmf_scan_results_le {
__le32 count;
};
+struct brcmf_escan_params_le {
+ __le32 version;
+ __le16 action;
+ __le16 sync_id;
+ struct brcmf_scan_params_le params_le;
+};
+
+struct brcmf_escan_result_le {
+ __le32 buflen;
+ __le32 version;
+ __le16 sync_id;
+ __le16 bss_count;
+ struct brcmf_bss_info_le bss_info_le;
+};
+
+#define WL_ESCAN_RESULTS_FIXED_SIZE (sizeof(struct brcmf_escan_result_le) - \
+ sizeof(struct brcmf_bss_info_le))
+
/* used for association with a specific BSSID and chanspec list */
struct brcmf_assoc_params_le {
/* 00:00:00:00:00:00: broadcast scan */
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c
index 6f70953..8121dba 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c
@@ -205,7 +205,8 @@ brcmf_c_show_host_event(struct brcmf_event_msg *event, void *event_data)
BRCMF_E_ACTION_FRAME_COMPLETE, "ACTION FRAME TX COMPLETE"}, {
BRCMF_E_IF, "IF"}, {
BRCMF_E_RSSI, "RSSI"}, {
- BRCMF_E_PFN_SCAN_COMPLETE, "SCAN_COMPLETE"}
+ BRCMF_E_PFN_SCAN_COMPLETE, "SCAN_COMPLETE"}, {
+ BRCMF_E_ESCAN_RESULT, "ESCAN_RESULT"}
};
uint event_type, flags, auth_type, datalen;
static u32 seqnum_prev;
@@ -350,6 +351,11 @@ brcmf_c_show_host_event(struct brcmf_event_msg *event, void *event_data)
brcmf_dbg(EVENT, "MACEVENT: %s\n", event_name);
break;
+ case BRCMF_E_ESCAN_RESULT:
+ brcmf_dbg(EVENT, "MACEVENT: %s\n", event_name);
+ datalen = 0;
+ break;
+
case BRCMF_E_PFN_NET_FOUND:
case BRCMF_E_PFN_NET_LOST:
case BRCMF_E_PFN_SCAN_COMPLETE:
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
index 6623f48..32ee052 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
@@ -693,11 +693,342 @@ scan_out:
return err;
}
+static void brcmf_escan_prep(struct brcmf_scan_params_le *params_le,
+ struct cfg80211_scan_request *request)
+{
+ u32 n_ssids;
+ u32 n_channels;
+ s32 i;
+ s32 offset;
+ __le16 chanspec;
+ u16 channel;
+ struct ieee80211_channel *req_channel;
+ char *ptr;
+ struct brcmf_ssid ssid;
+
+ memcpy(params_le->bssid, ether_bcast, ETH_ALEN);
+ params_le->bss_type = DOT11_BSSTYPE_ANY;
+ params_le->scan_type = 0;
+ params_le->channel_num = 0;
+ params_le->nprobes = cpu_to_le32(-1);
+ params_le->active_time = cpu_to_le32(-1);
+ params_le->passive_time = cpu_to_le32(-1);
+ params_le->home_time = cpu_to_le32(-1);
+ memset(¶ms_le->ssid_le, 0, sizeof(params_le->ssid_le));
+
+ /* if request is null exit so it will be all channel broadcast scan */
+ if (!request)
+ return;
+
+ n_ssids = request->n_ssids;
+ n_channels = request->n_channels;
+ /* Copy channel array if applicable */
+ WL_SCAN("### List of channelspecs to scan ### %d\n", n_channels);
+ if (n_channels > 0) {
+ for (i = 0; i < n_channels; i++) {
+ chanspec = 0;
+ req_channel = request->channels[i];
+ channel = ieee80211_frequency_to_channel(
+ req_channel->center_freq);
+ if (req_channel->band == IEEE80211_BAND_2GHZ)
+ chanspec |= WL_CHANSPEC_BAND_2G;
+ else
+ chanspec |= WL_CHANSPEC_BAND_5G;
+
+ if (req_channel->flags & IEEE80211_CHAN_NO_HT40) {
+ chanspec |= WL_CHANSPEC_BW_20;
+ chanspec |= WL_CHANSPEC_CTL_SB_NONE;
+ } else {
+ chanspec |= WL_CHANSPEC_BW_40;
+ if (req_channel->flags &
+ IEEE80211_CHAN_NO_HT40PLUS)
+ chanspec |= WL_CHANSPEC_CTL_SB_LOWER;
+ else
+ chanspec |= WL_CHANSPEC_CTL_SB_UPPER;
+ }
+
+ params_le->channel_list[i] =
+ (channel & WL_CHANSPEC_CHAN_MASK) |
+ chanspec;
+ WL_SCAN("Chan : %d, Channel spec: %x\n",
+ channel, params_le->channel_list[i]);
+ params_le->channel_list[i] =
+ cpu_to_le16(params_le->channel_list[i]);
+ }
+ } else {
+ WL_SCAN("Scanning all channels\n");
+ }
+ /* Copy ssid array if applicable */
+ WL_SCAN("### List of SSIDs to scan ### %d\n", n_ssids);
+ if (n_ssids > 0) {
+ offset = offsetof(struct brcmf_scan_params_le, channel_list) +
+ n_channels * sizeof(u16);
+ offset = roundup(offset, sizeof(u32));
+ ptr = (char *)params_le + offset;
+ for (i = 0; i < n_ssids; i++) {
+ memset(&ssid, 0, sizeof(ssid));
+ ssid.SSID_len = cpu_to_le32(request->ssids[i].ssid_len);
+ memcpy(ssid.SSID, request->ssids[i].ssid,
+ request->ssids[i].ssid_len);
+ if (!ssid.SSID_len)
+ WL_SCAN("%d: Broadcast scan\n", i);
+ else
+ WL_SCAN("%d: scan for %s size =%d\n", i,
+ ssid.SSID, ssid.SSID_len);
+ memcpy(ptr, &ssid, sizeof(ssid));
+ ptr += sizeof(ssid);
+ }
+ } else {
+ WL_SCAN("Broadcast scan %p\n", request->ssids);
+ if ((request->ssids) && request->ssids->ssid_len) {
+ WL_SCAN("SSID %s len=%d\n", params_le->ssid_le.SSID,
+ request->ssids->ssid_len);
+ params_le->ssid_le.SSID_len =
+ cpu_to_le32(request->ssids->ssid_len);
+ memcpy(¶ms_le->ssid_le.SSID, request->ssids->ssid,
+ request->ssids->ssid_len);
+ }
+ }
+ /* Adding mask to channel numbers */
+ params_le->channel_num =
+ cpu_to_le32((n_ssids << BRCMF_SCAN_PARAMS_NSSID_SHIFT) |
+ (n_channels & BRCMF_SCAN_PARAMS_COUNT_MASK));
+}
+
+static s32
+brcmf_notify_escan_complete(struct brcmf_cfg80211_priv *cfg_priv,
+ struct net_device *ndev,
+ bool aborted, bool fw_abort)
+{
+ struct brcmf_scan_params_le params_le;
+ struct cfg80211_scan_request *scan_request;
+ s32 err = 0;
+
+ WL_SCAN("Enter\n");
+
+ /* clear scan request, because the FW abort can cause a second call */
+ /* to this functon and might cause a double cfg80211_scan_done */
+ scan_request = cfg_priv->scan_request;
+ cfg_priv->scan_request = NULL;
+
+ if (timer_pending(&cfg_priv->escan_timeout))
+ del_timer_sync(&cfg_priv->escan_timeout);
+
+ if (fw_abort) {
+ /* Do a scan abort to stop the driver's scan engine */
+ WL_SCAN("ABORT scan in firmware\n");
+ memset(¶ms_le, 0, sizeof(params_le));
+ memcpy(params_le.bssid, ether_bcast, ETH_ALEN);
+ params_le.bss_type = DOT11_BSSTYPE_ANY;
+ params_le.scan_type = 0;
+ params_le.channel_num = cpu_to_le32(1);
+ params_le.nprobes = cpu_to_le32(1);
+ params_le.active_time = cpu_to_le32(-1);
+ params_le.passive_time = cpu_to_le32(-1);
+ params_le.home_time = cpu_to_le32(-1);
+ /* Scan is aborted by setting channel_list[0] to -1 */
+ params_le.channel_list[0] = cpu_to_le16(-1);
+ /* E-Scan (or anyother type) can be aborted by SCAN */
+ err = brcmf_exec_dcmd(ndev, BRCMF_C_SCAN, ¶ms_le,
+ sizeof(params_le));
+ if (err)
+ WL_ERR("Scan abort failed\n");
+ }
+ if (scan_request) {
+ WL_SCAN("ESCAN Completed scan: %s\n",
+ aborted ? "Aborted" : "Done");
+ cfg80211_scan_done(scan_request, aborted);
+ brcmf_set_mpc(ndev, 1);
+ }
+ if (!test_and_clear_bit(WL_STATUS_SCANNING, &cfg_priv->status)) {
+ WL_ERR("Scan complete while device not scanning\n");
+ return -EPERM;
+ }
+
+ return err;
+}
+
+static s32
+brcmf_run_escan(struct brcmf_cfg80211_priv *cfg_priv, struct net_device *ndev,
+ struct cfg80211_scan_request *request, u16 action)
+{
+ s32 params_size = BRCMF_SCAN_PARAMS_FIXED_SIZE +
+ offsetof(struct brcmf_escan_params_le, params_le);
+ struct brcmf_escan_params_le *params;
+ s32 err = 0;
+
+ WL_SCAN("E-SCAN START\n");
+
+ if (request != NULL) {
+ /* Allocate space for populating ssids in struct */
+ params_size += sizeof(u32) * ((request->n_channels + 1) / 2);
+
+ /* Allocate space for populating ssids in struct */
+ params_size += sizeof(struct brcmf_ssid) * request->n_ssids;
+ }
+
+ params = kzalloc(params_size, GFP_KERNEL);
+ if (!params) {
+ err = -ENOMEM;
+ goto exit;
+ }
+ BUG_ON(params_size + sizeof("escan") >= BRCMF_DCMD_MEDLEN);
+ brcmf_escan_prep(¶ms->params_le, request);
+ params->version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);
+ params->action = cpu_to_le16(action);
+ params->sync_id = cpu_to_le16(0x1234);
+
+ err = brcmf_dev_iovar_setbuf(ndev, "escan", params, params_size,
+ cfg_priv->escan_ioctl_buf, BRCMF_DCMD_MEDLEN);
+ if (err) {
+ if (err == -EBUSY)
+ WL_INFO("system busy : escan canceled\n");
+ else
+ WL_ERR("error (%d)\n", err);
+ }
+
+ kfree(params);
+exit:
+ return err;
+}
+
+static s32
+brcmf_do_escan(struct brcmf_cfg80211_priv *cfg_priv, struct wiphy *wiphy,
+ struct net_device *ndev, struct cfg80211_scan_request *request)
+{
+ s32 err;
+ __le32 passive_scan;
+ struct brcmf_scan_results *results;
+
+ WL_SCAN("Enter\n");
+ cfg_priv->escan_info.ndev = ndev;
+ cfg_priv->escan_info.wiphy = wiphy;
+ cfg_priv->escan_info.escan_state = WL_ESCAN_STATE_SCANNING;
+ passive_scan = cfg_priv->active_scan ? 0 : cpu_to_le32(1);
+ err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_PASSIVE_SCAN,
+ &passive_scan, sizeof(passive_scan));
+ if (err) {
+ WL_ERR("error (%d)\n", err);
+ return err;
+ }
+ brcmf_set_mpc(ndev, 0);
+ results = (struct brcmf_scan_results *)cfg_priv->escan_info.escan_buf;
+ results->version = 0;
+ results->count = 0;
+ results->buflen = WL_ESCAN_RESULTS_FIXED_SIZE;
+
+ err = brcmf_run_escan(cfg_priv, ndev, request, WL_ESCAN_ACTION_START);
+ if (err)
+ brcmf_set_mpc(ndev, 1);
+ return err;
+}
+
+static s32
+brcmf_cfg80211_escan(struct wiphy *wiphy, struct net_device *ndev,
+ struct cfg80211_scan_request *request,
+ struct cfg80211_ssid *this_ssid)
+{
+ struct brcmf_cfg80211_priv *cfg_priv = ndev_to_cfg(ndev);
+ struct cfg80211_ssid *ssids;
+ struct brcmf_cfg80211_scan_req *sr = cfg_priv->scan_req_int;
+ __le32 passive_scan;
+ bool escan_req;
+ bool spec_scan;
+ s32 err;
+ u32 SSID_len;
+
+ WL_SCAN("START ESCAN\n");
+
+ if (test_bit(WL_STATUS_SCANNING, &cfg_priv->status)) {
+ WL_ERR("Scanning already : status (%lu)\n", cfg_priv->status);
+ return -EAGAIN;
+ }
+ if (test_bit(WL_STATUS_SCAN_ABORTING, &cfg_priv->status)) {
+ WL_ERR("Scanning being aborted : status (%lu)\n",
+ cfg_priv->status);
+ return -EAGAIN;
+ }
+ if (test_bit(WL_STATUS_CONNECTING, &cfg_priv->status)) {
+ WL_ERR("Connecting : status (%lu)\n",
+ cfg_priv->status);
+ return -EAGAIN;
+ }
+
+ /* Arm scan timeout timer */
+ mod_timer(&cfg_priv->escan_timeout, jiffies +
+ WL_ESCAN_TIMER_INTERVAL_MS * HZ / 1000);
+
+ escan_req = false;
+ if (request) {
+ /* scan bss */
+ ssids = request->ssids;
+ escan_req = true;
+ } else {
+ /* scan in ibss */
+ /* we don't do escan in ibss */
+ ssids = this_ssid;
+ }
+
+ cfg_priv->scan_request = request;
+ set_bit(WL_STATUS_SCANNING, &cfg_priv->status);
+ if (escan_req) {
+ err = brcmf_do_escan(cfg_priv, wiphy, ndev, request);
+ if (!err)
+ return err;
+ else
+ goto scan_out;
+ } else {
+ WL_SCAN("ssid \"%s\", ssid_len (%d)\n",
+ ssids->ssid, ssids->ssid_len);
+ memset(&sr->ssid_le, 0, sizeof(sr->ssid_le));
+ SSID_len = min_t(u8, sizeof(sr->ssid_le.SSID), ssids->ssid_len);
+ sr->ssid_le.SSID_len = cpu_to_le32(0);
+ spec_scan = false;
+ if (SSID_len) {
+ memcpy(sr->ssid_le.SSID, ssids->ssid, SSID_len);
+ sr->ssid_le.SSID_len = cpu_to_le32(SSID_len);
+ spec_scan = true;
+ } else
+ WL_SCAN("Broadcast scan\n");
+
+ passive_scan = cfg_priv->active_scan ? 0 : cpu_to_le32(1);
+ err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_PASSIVE_SCAN,
+ &passive_scan, sizeof(passive_scan));
+ if (err) {
+ WL_ERR("WLC_SET_PASSIVE_SCAN error (%d)\n", err);
+ goto scan_out;
+ }
+ brcmf_set_mpc(ndev, 0);
+ err = brcmf_exec_dcmd(ndev, BRCMF_C_SCAN, &sr->ssid_le,
+ sizeof(sr->ssid_le));
+ if (err) {
+ if (err == -EBUSY)
+ WL_INFO("BUSY: scan for \"%s\" canceled\n",
+ sr->ssid_le.SSID);
+ else
+ WL_ERR("WLC_SCAN error (%d)\n", err);
+
+ brcmf_set_mpc(ndev, 1);
+ goto scan_out;
+ }
+ }
+
+ return 0;
+
+scan_out:
+ clear_bit(WL_STATUS_SCANNING, &cfg_priv->status);
+ if (timer_pending(&cfg_priv->escan_timeout))
+ del_timer_sync(&cfg_priv->escan_timeout);
+ cfg_priv->scan_request = NULL;
+ return err;
+}
+
static s32
brcmf_cfg80211_scan(struct wiphy *wiphy,
struct cfg80211_scan_request *request)
{
struct net_device *ndev = request->wdev->netdev;
+ struct brcmf_cfg80211_priv *cfg_priv = ndev_to_cfg(ndev);
s32 err = 0;
WL_TRACE("Enter\n");
@@ -705,7 +1036,11 @@ brcmf_cfg80211_scan(struct wiphy *wiphy,
if (!check_sys_up(wiphy))
return -EIO;
- err = brcmf_cfg80211_iscan(wiphy, ndev, request, NULL);
+ if (cfg_priv->iscan_on)
+ err = brcmf_cfg80211_iscan(wiphy, ndev, request, NULL);
+ else if (cfg_priv->escan_on)
+ err = brcmf_cfg80211_escan(wiphy, ndev, request, NULL);
+
if (err)
WL_ERR("scan error (%d)\n", err);
@@ -2474,6 +2809,175 @@ static s32 brcmf_init_iscan(struct brcmf_cfg80211_priv *cfg_priv)
return err;
}
+static void brcmf_cfg80211_escan_timeout_worker(struct work_struct *work)
+{
+ struct brcmf_cfg80211_priv *cfg_priv =
+ container_of(work, struct brcmf_cfg80211_priv,
+ escan_timeout_work);
+
+ brcmf_notify_escan_complete(cfg_priv,
+ cfg_priv->escan_info.ndev, true, true);
+}
+
+static void brcmf_escan_timeout(unsigned long data)
+{
+ struct brcmf_cfg80211_priv *cfg_priv =
+ (struct brcmf_cfg80211_priv *)data;
+
+ if (cfg_priv->scan_request) {
+ WL_ERR("timer expired\n");
+ if (cfg_priv->escan_on)
+ schedule_work(&cfg_priv->escan_timeout_work);
+ }
+}
+
+static s32
+brcmf_compare_update_same_bss(struct brcmf_bss_info_le *bss,
+ struct brcmf_bss_info_le *bss_info_le)
+{
+ if (!memcmp(&bss_info_le->BSSID, &bss->BSSID, ETH_ALEN) &&
+ (CHSPEC_BAND(le16_to_cpu(bss_info_le->chanspec)) ==
+ CHSPEC_BAND(le16_to_cpu(bss->chanspec))) &&
+ bss_info_le->SSID_len == bss->SSID_len &&
+ !memcmp(bss_info_le->SSID, bss->SSID, bss_info_le->SSID_len)) {
+ if ((bss->flags & WLC_BSS_RSSI_ON_CHANNEL) ==
+ (bss_info_le->flags & WLC_BSS_RSSI_ON_CHANNEL)) {
+ /* preserve max RSSI if the measurements are
+ * both on-channel or both off-channel
+ */
+ if (bss_info_le->RSSI > bss->RSSI)
+ bss->RSSI = bss_info_le->RSSI;
+ } else if ((bss->flags & WLC_BSS_RSSI_ON_CHANNEL) &&
+ (bss_info_le->flags & WLC_BSS_RSSI_ON_CHANNEL) == 0) {
+ /* preserve the on-channel rssi measurement
+ * if the new measurement is off channel
+ */
+ bss->RSSI = bss_info_le->RSSI;
+ bss->flags |= WLC_BSS_RSSI_ON_CHANNEL;
+ }
+ return 1;
+ }
+ return 0;
+}
+
+static s32
+brcmf_cfg80211_escan_handler(struct brcmf_cfg80211_priv *cfg_priv,
+ struct net_device *ndev,
+ const struct brcmf_event_msg *e, void *data)
+{
+ s32 status;
+ s32 err = 0;
+ struct brcmf_escan_result_le *escan_result_le;
+ struct brcmf_bss_info_le *bss_info_le;
+ struct brcmf_bss_info_le *bss = NULL;
+ u32 bi_length;
+ struct brcmf_scan_results *list;
+ u32 i;
+
+ status = be32_to_cpu(e->status);
+
+ if (!ndev || !cfg_priv->escan_on ||
+ !test_bit(WL_STATUS_SCANNING, &cfg_priv->status)) {
+ WL_ERR("scan not ready ndev %p wl->escan_on %d drv_status %x\n",
+ ndev, cfg_priv->escan_on,
+ !test_bit(WL_STATUS_SCANNING, &cfg_priv->status));
+ return -EPERM;
+ }
+
+ if (status == BRCMF_E_STATUS_PARTIAL) {
+ WL_SCAN("ESCAN Partial result\n");
+ escan_result_le = (struct brcmf_escan_result_le *) data;
+ if (!escan_result_le) {
+ WL_ERR("Invalid escan result (NULL pointer)\n");
+ goto exit;
+ }
+ if (!cfg_priv->scan_request) {
+ WL_SCAN("result without cfg80211 request\n");
+ goto exit;
+ }
+
+ if (le16_to_cpu(escan_result_le->bss_count) != 1) {
+ WL_ERR("Invalid bss_count %d: ignoring\n",
+ escan_result_le->bss_count);
+ goto exit;
+ }
+ bss_info_le = &escan_result_le->bss_info_le;
+
+ bi_length = le32_to_cpu(bss_info_le->length);
+ if (bi_length != (le32_to_cpu(escan_result_le->buflen) -
+ WL_ESCAN_RESULTS_FIXED_SIZE)) {
+ WL_ERR("Invalid bss_info length %d: ignoring\n",
+ bi_length);
+ goto exit;
+ }
+
+ if (!(cfg_to_wiphy(cfg_priv)->interface_modes &
+ BIT(NL80211_IFTYPE_ADHOC))) {
+ if (le16_to_cpu(bss_info_le->capability) &
+ WLAN_CAPABILITY_IBSS) {
+ WL_ERR("Ignoring IBSS result\n");
+ goto exit;
+ }
+ }
+
+ list = (struct brcmf_scan_results *)
+ cfg_priv->escan_info.escan_buf;
+ if (bi_length > WL_ESCAN_BUF_SIZE - list->buflen) {
+ WL_ERR("Buffer is too small: ignoring\n");
+ goto exit;
+ }
+
+ for (i = 0; i < list->count; i++) {
+ bss = bss ? (struct brcmf_bss_info_le *)
+ ((unsigned char *)bss +
+ le32_to_cpu(bss->length)) : list->bss_info_le;
+ if (brcmf_compare_update_same_bss(bss, bss_info_le))
+ goto exit;
+ }
+ memcpy(&(cfg_priv->escan_info.escan_buf[list->buflen]),
+ bss_info_le, bi_length);
+ list->version = le32_to_cpu(bss_info_le->version);
+ list->buflen += bi_length;
+ list->count++;
+ } else {
+ cfg_priv->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
+ if (cfg_priv->scan_request) {
+ cfg_priv->bss_list = (struct brcmf_scan_results *)
+ cfg_priv->escan_info.escan_buf;
+ brcmf_inform_bss(cfg_priv);
+ if (status == BRCMF_E_STATUS_SUCCESS) {
+ WL_SCAN("ESCAN Completed\n");
+ brcmf_notify_escan_complete(cfg_priv, ndev,
+ false, false);
+ } else {
+ WL_ERR("ESCAN Aborted, Event 0x%x\n", status);
+ brcmf_notify_escan_complete(cfg_priv, ndev,
+ true, false);
+ }
+ brcmf_set_mpc(ndev, 1);
+ } else
+ WL_ERR("Unexpected scan result 0x%x\n", status);
+ }
+exit:
+ return err;
+}
+
+static void brcmf_init_escan(struct brcmf_cfg80211_priv *cfg_priv)
+{
+
+ if (cfg_priv->escan_on) {
+ cfg_priv->el.handler[BRCMF_E_ESCAN_RESULT] =
+ brcmf_cfg80211_escan_handler;
+ cfg_priv->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
+ /* Init scan_timeout timer */
+ init_timer(&cfg_priv->escan_timeout);
+ cfg_priv->escan_timeout.data = (unsigned long) cfg_priv;
+ cfg_priv->escan_timeout.function = brcmf_escan_timeout;
+ INIT_WORK(&cfg_priv->escan_timeout_work,
+ brcmf_cfg80211_escan_timeout_worker);
+ }
+}
+
static __always_inline void brcmf_delay(u32 ms)
{
if (ms < 1000 / HZ) {
@@ -3242,6 +3746,8 @@ static void brcmf_deinit_priv_mem(struct brcmf_cfg80211_priv *cfg_priv)
cfg_priv->profile = NULL;
kfree(cfg_priv->scan_req_int);
cfg_priv->scan_req_int = NULL;
+ kfree(cfg_priv->escan_ioctl_buf);
+ cfg_priv->escan_ioctl_buf = NULL;
kfree(cfg_priv->dcmd_buf);
cfg_priv->dcmd_buf = NULL;
kfree(cfg_priv->extra_buf);
@@ -3270,6 +3776,9 @@ static s32 brcmf_init_priv_mem(struct brcmf_cfg80211_priv *cfg_priv)
GFP_KERNEL);
if (!cfg_priv->scan_req_int)
goto init_priv_mem_out;
+ cfg_priv->escan_ioctl_buf = kzalloc(BRCMF_DCMD_MEDLEN, GFP_KERNEL);
+ if (!cfg_priv->escan_ioctl_buf)
+ goto init_priv_mem_out;
cfg_priv->dcmd_buf = kzalloc(WL_DCMD_LEN_MAX, GFP_KERNEL);
if (!cfg_priv->dcmd_buf)
goto init_priv_mem_out;
@@ -3406,8 +3915,17 @@ static s32 wl_init_priv(struct brcmf_cfg80211_priv *cfg_priv)
cfg_priv->scan_request = NULL;
cfg_priv->pwr_save = true;
+#ifdef CONFIG_BRCMISCAN
cfg_priv->iscan_on = true; /* iscan on & off switch.
we enable iscan per default */
+ cfg_priv->escan_on = false; /* escan on & off switch.
+ we disable escan per default */
+#else
+ cfg_priv->iscan_on = false; /* iscan on & off switch.
+ we disable iscan per default */
+ cfg_priv->escan_on = true; /* escan on & off switch.
+ we enable escan per default */
+#endif
cfg_priv->roam_on = true; /* roam on & off switch.
we enable roam per default */
@@ -3425,6 +3943,7 @@ static s32 wl_init_priv(struct brcmf_cfg80211_priv *cfg_priv)
err = brcmf_init_iscan(cfg_priv);
if (err)
return err;
+ brcmf_init_escan(cfg_priv);
brcmf_init_conf(cfg_priv->conf);
brcmf_init_prof(cfg_priv->profile);
brcmf_link_down(cfg_priv);
@@ -3583,6 +4102,7 @@ static s32 brcmf_dongle_eventmsg(struct net_device *ndev)
setbit(eventmask, BRCMF_E_TXFAIL);
setbit(eventmask, BRCMF_E_JOIN_START);
setbit(eventmask, BRCMF_E_SCAN_COMPLETE);
+ setbit(eventmask, BRCMF_E_ESCAN_RESULT);
brcmf_c_mkiovar("event_msgs", eventmask, BRCMF_EVENTING_MASK_LEN,
iovbuf, sizeof(iovbuf));
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h
index b5d9b36..3b21297 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h
@@ -123,6 +123,13 @@ do { \
#define WL_SCAN_UNASSOC_TIME 40
#define WL_SCAN_PASSIVE_TIME 120
+#define WL_ESCAN_BUF_SIZE (1024 * 64)
+#define WL_ESCAN_TIMER_INTERVAL_MS 8000 /* E-Scan timeout */
+
+#define WL_ESCAN_ACTION_START 1
+#define WL_ESCAN_ACTION_CONTINUE 2
+#define WL_ESCAN_ACTION_ABORT 3
+
/* dongle status */
enum wl_status {
WL_STATUS_READY,
@@ -275,6 +282,19 @@ struct brcmf_cfg80211_pmk_list {
struct pmkid foo[MAXPMKID - 1];
};
+/* dongle escan state */
+enum wl_escan_state {
+ WL_ESCAN_STATE_IDLE,
+ WL_ESCAN_STATE_SCANNING
+};
+
+struct escan_info {
+ u32 escan_state;
+ u8 escan_buf[WL_ESCAN_BUF_SIZE];
+ struct wiphy *wiphy;
+ struct net_device *ndev;
+};
+
/* dongle private data of cfg80211 interface */
struct brcmf_cfg80211_priv {
struct wireless_dev *wdev; /* representing wl cfg80211 device */
@@ -315,6 +335,11 @@ struct brcmf_cfg80211_priv {
u8 *dcmd_buf; /* dcmd buffer */
u8 *extra_buf; /* maily to grab assoc information */
struct dentry *debugfsdir;
+ bool escan_on; /* escan on/off switch */
+ struct escan_info escan_info; /* escan information */
+ struct timer_list escan_timeout; /* Timer for catch scan timeout */
+ struct work_struct escan_timeout_work; /* scan timeout worker */
+ u8 *escan_ioctl_buf;
u8 ci[0] __aligned(NETDEV_ALIGN);
};
--
1.7.9.5
--
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