brcmfmac: add e-scan support.

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@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd.h b/drivers/net/wireless/brcm80211/brcmfmac/dhd.h
index 9e2fb5bc932f..4766d9f35696 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 */