wil6210: Limit max number of associated stations

Add a module parameter to support setting the maximum
number of stations that can be associated to an AP.

Signed-off-by: Dedy Lansky <qca_dlansky@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c
index 0beb129..596d6c1 100644 (file)
--- a/drivers/net/wireless/ath/wil6210/wmi.c
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -14,6 +14,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include <linux/moduleparam.h>
 #include <linux/etherdevice.h>
 #include <linux/if_arp.h>
 
@@ -22,6 +23,10 @@
 #include "wmi.h"
 #include "trace.h"
 
+static uint max_assoc_sta = 1;
+module_param(max_assoc_sta, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(max_assoc_sta, " Max number of stations associated to the AP");
+
 /**
  * WMI event receiving - theory of operations
  *
@@ -794,7 +799,7 @@ int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
                .network_type = wmi_nettype,
                .disable_sec_offload = 1,
                .channel = chan - 1,
-               .pcp_max_assoc_sta = WIL6210_MAX_CID,
+               .pcp_max_assoc_sta = max_assoc_sta,
        };
        struct {
                struct wil6210_mbox_hdr_wmi wmi;
@@ -804,6 +809,14 @@ int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan)
        if (!wil->secure_pcp)
                cmd.disable_sec = 1;
 
+       if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) ||
+           (cmd.pcp_max_assoc_sta <= 0)) {
+               wil_info(wil,
+                        "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n",
+                        max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID);
+               cmd.pcp_max_assoc_sta = WIL6210_MAX_CID;
+       }
+
        /*
         * Processing time may be huge, in case of secure AP it takes about
         * 3500ms for FW to start AP