[PATCH v5 8/8] ath11k: Add support for 6g scan hint

Pradeep Kumar Chitrapu
2020-06-03T00:17:48Z

Add support for 6Ghz short ssid and bssid hint mechanism
as part of scan command.

Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>
---
drivers/net/wireless/ath/ath11k/wmi.c | 72 +++++++++++++++++++++++++++
drivers/net/wireless/ath/ath11k/wmi.h | 22 ++++++++
2 files changed, 94 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index ad3a7b68d308..317376a4eb6e 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -2005,6 +2005,8 @@ int ath11k_wmi_send_scan_start_cmd(struct ath11k *ar,
int i, ret, len;
u32 *tmp_ptr;
u8 extraie_len_with_pad = 0;
+ struct hint_short_ssid *s_ssid = NULL;
+ struct hint_bssid *hint_bssid = NULL;

len = sizeof(*cmd);

@@ -2026,6 +2028,14 @@ int ath11k_wmi_send_scan_start_cmd(struct ath11k *ar,
roundup(params->extraie.len, sizeof(u32));
len += extraie_len_with_pad;

+ if (params->num_hint_bssid)
+ len += TLV_HDR_SIZE +
+ params->num_hint_bssid * sizeof(struct hint_bssid);
+
+ if (params->num_hint_s_ssid)
+ len += TLV_HDR_SIZE +
+ params->num_hint_s_ssid * sizeof(struct hint_short_ssid);
+
skb = ath11k_wmi_alloc_skb(wmi->wmi_ab, len);
if (!skb)
return -ENOMEM;
@@ -2126,6 +2136,68 @@ int ath11k_wmi_send_scan_start_cmd(struct ath11k *ar,

ptr += extraie_len_with_pad;

+ if (params->num_hint_s_ssid) {
+ len = params->num_hint_s_ssid * sizeof(struct hint_short_ssid);
+ tlv = ptr;
+ tlv->header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_ARRAY_FIXED_STRUCT) |
+ FIELD_PREP(WMI_TLV_LEN, len);
+ ptr += TLV_HDR_SIZE;
+ s_ssid = ptr;
+ for (i = 0; i < params->num_hint_s_ssid; ++i) {
+ s_ssid->freq_flags = params->hint_s_ssid[i].freq_flags;
+ s_ssid->short_ssid = params->hint_s_ssid[i].short_ssid;
+ s_ssid++;
+ }
+ ptr += len;
+ }
+
+ if (params->num_hint_bssid) {
+ len = params->num_hint_bssid * sizeof(struct hint_bssid);
+ tlv = ptr;
+ tlv->header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_ARRAY_FIXED_STRUCT) |
+ FIELD_PREP(WMI_TLV_LEN, len);
+ ptr += TLV_HDR_SIZE;
+ hint_bssid = ptr;
+ for (i = 0; i < params->num_hint_bssid; ++i) {
+ hint_bssid->freq_flags =
+ params->hint_bssid[i].freq_flags;
+ ether_addr_copy(&params->hint_bssid[i].bssid.addr[0],
+ &hint_bssid->bssid.addr[0]);
+ hint_bssid++;
+ }
+ }
+
+ len = params->num_hint_s_ssid * sizeof(struct hint_short_ssid);
+ tlv = ptr;
+ tlv->header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_ARRAY_FIXED_STRUCT) |
+ FIELD_PREP(WMI_TLV_LEN, len);
+ ptr += TLV_HDR_SIZE;
+ if (params->num_hint_s_ssid) {
+ s_ssid = ptr;
+ for (i = 0; i < params->num_hint_s_ssid; ++i) {
+ s_ssid->freq_flags = params->hint_s_ssid[i].freq_flags;
+ s_ssid->short_ssid = params->hint_s_ssid[i].short_ssid;
+ s_ssid++;
+ }
+ }
+ ptr += len;
+
+ len = params->num_hint_bssid * sizeof(struct hint_bssid);
+ tlv = ptr;
+ tlv->header = FIELD_PREP(WMI_TLV_TAG, WMI_TAG_ARRAY_FIXED_STRUCT) |
+ FIELD_PREP(WMI_TLV_LEN, len);
+ ptr += TLV_HDR_SIZE;
+ if (params->num_hint_bssid) {
+ hint_bssid = ptr;
+ for (i = 0; i < params->num_hint_bssid; ++i) {
+ hint_bssid->freq_flags =
+ params->hint_bssid[i].freq_flags;
+ ether_addr_copy(&params->hint_bssid[i].bssid.addr[0],
+ &hint_bssid->bssid.addr[0]);
+ hint_bssid++;
+ }
+ }
+
ret = ath11k_wmi_cmd_send(wmi, skb,
WMI_START_SCAN_CMDID);
if (ret) {
diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 319ad7241e01..1162bd7a5f87 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -50,6 +50,14 @@ struct wmi_tlv {
#define WMI_MAX_MEM_REQS 32
#define ATH11K_MAX_HW_LISTEN_INTERVAL 5

+#define WLAN_SCAN_MAX_HINT_S_SSID 10
+#define WLAN_SCAN_MAX_HINT_BSSID 10
+#define MAX_RNR_BSS 5
+
+#define WLAN_SCAN_MAX_HINT_S_SSID 10
+#define WLAN_SCAN_MAX_HINT_BSSID 10
+#define MAX_RNR_BSS 5
+
#define WLAN_SCAN_PARAMS_MAX_SSID 16
#define WLAN_SCAN_PARAMS_MAX_BSSID 4
#define WLAN_SCAN_PARAMS_MAX_IE_LEN 256
@@ -3105,6 +3113,16 @@ enum {
((flag) |= (((mode) << WMI_SCAN_DWELL_MODE_SHIFT) & \
WMI_SCAN_DWELL_MODE_MASK))

+struct hint_short_ssid {
+ u32 freq_flags;
+ u32 short_ssid;
+};
+
+struct hint_bssid {
+ u32 freq_flags;
+ struct wmi_mac_addr bssid;
+};
+
struct scan_req_params {
u32 scan_id;
u32 scan_req_id;
@@ -3184,6 +3202,10 @@ struct scan_req_params {
struct element_info extraie;
struct element_info htcap;
struct element_info vhtcap;
+ u32 num_hint_s_ssid;
+ u32 num_hint_bssid;
+ struct hint_short_ssid hint_s_ssid[WLAN_SCAN_MAX_HINT_S_SSID];
+ struct hint_bssid hint_bssid[WLAN_SCAN_MAX_HINT_BSSID];
};

struct wmi_ssid_arg {
--
2.17.1