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wcn36xx: pass information elements in scan requests

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When the wifi driver core passes IE elements in the scan request, append
them to the firmware message. The driver currently tells the core that
it is capable of attaching up to WCN36XX_MAX_SCAN_IE_LEN octets, but
doesn't actually pass them to the the hardware.

Note that this patch doesn't fix a bug that was observed. The change is
merely done for the sake of completeness as the hardware supports
appending IEs in scans. Tests show that network scans work fine with
this patch applied.

Some defines were moved around to avoid cyclic include dependencies.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Daniel Mack 2018-04-17 15:23:37 +02:00 committed by Kalle Valo
parent 5a425c8b78
commit 4836ec42b0
3 changed files with 18 additions and 7 deletions
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8
drivers/net/wireless/ath/wcn36xx/hal.h
View File

@ -88,6 +88,12 @@
/* version string max length (including NULL) */
#define WCN36XX_HAL_VERSION_LENGTH 64
/* How many frames until we start a-mpdu TX session */
#define WCN36XX_AMPDU_START_THRESH 20
#define WCN36XX_MAX_SCAN_SSIDS 9
#define WCN36XX_MAX_SCAN_IE_LEN 500
/* message types for messages exchanged between WDI and HAL */
enum wcn36xx_hal_host_msg_type {
/* Init/De-Init */
@ -1170,7 +1176,7 @@ struct wcn36xx_hal_start_scan_offload_req_msg {
/* IE field */
u16 ie_len;
u8 ie[0];
u8 ie[WCN36XX_MAX_SCAN_IE_LEN];
} __packed;
struct wcn36xx_hal_start_scan_offload_rsp_msg {

11
drivers/net/wireless/ath/wcn36xx/smd.c
View File

@ -624,6 +624,9 @@ int wcn36xx_smd_start_hw_scan(struct wcn36xx *wcn, struct ieee80211_vif *vif,
struct wcn36xx_hal_start_scan_offload_req_msg msg_body;
int ret, i;
if (req->ie_len > WCN36XX_MAX_SCAN_IE_LEN)
return -EINVAL;
mutex_lock(&wcn->hal_mutex);
INIT_HAL_MSG(msg_body, WCN36XX_HAL_START_SCAN_OFFLOAD_REQ);
@ -648,6 +651,14 @@ int wcn36xx_smd_start_hw_scan(struct wcn36xx *wcn, struct ieee80211_vif *vif,
for (i = 0; i < msg_body.num_channel; i++)
msg_body.channels[i] = req->channels[i]->hw_value;
msg_body.header.len -= WCN36XX_MAX_SCAN_IE_LEN;
if (req->ie_len > 0) {
msg_body.ie_len = req->ie_len;
msg_body.header.len += req->ie_len;
memcpy(msg_body.ie, req->ie, req->ie_len);
}
PREPARE_HAL_BUF(wcn->hal_buf, msg_body);
wcn36xx_dbg(WCN36XX_DBG_HAL,

6
drivers/net/wireless/ath/wcn36xx/wcn36xx.h
View File

@ -32,12 +32,6 @@
#define WLAN_NV_FILE "wlan/prima/WCNSS_qcom_wlan_nv.bin"
#define WCN36XX_AGGR_BUFFER_SIZE 64
/* How many frames until we start a-mpdu TX session */
#define WCN36XX_AMPDU_START_THRESH 20
#define WCN36XX_MAX_SCAN_SSIDS 9
#define WCN36XX_MAX_SCAN_IE_LEN 500
extern unsigned int wcn36xx_dbg_mask;
enum wcn36xx_debug_mask {