wpa_supplicant: Add bss_flush command to invalidate scan results

Change-Id: I1a6ebc4fe53e16909ac44e2d04a6b651993dae91
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index c703002..041685a 100644 (file)
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -2904,6 +2904,19 @@ static int wpa_supplicant_ctrl_iface_bss_expire_count(
 }
 
 
+static int wpa_supplicant_ctrl_iface_bss_flush(
+       struct wpa_supplicant *wpa_s, char *cmd)
+{
+       int flush_age = atoi(cmd);
+
+       if (flush_age == 0)
+               wpa_bss_flush(wpa_s);
+       else
+               wpa_bss_flush_by_age(wpa_s, flush_age);
+       return 0;
+}
+
+
 static void wpa_supplicant_ctrl_iface_drop_sa(struct wpa_supplicant *wpa_s)
 {
        wpa_printf(MSG_DEBUG, "Dropping SA without deauthentication");
@@ -4611,6 +4624,9 @@ char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
                if (wpa_supplicant_ctrl_iface_bss_expire_count(wpa_s,
                                                               buf + 17))
                        reply_len = -1;
+       } else if (os_strncmp(buf, "BSS_FLUSH ", 10) == 0) {
+               if (wpa_supplicant_ctrl_iface_bss_flush(wpa_s, buf + 10))
+                       reply_len = -1;
 #ifdef CONFIG_TDLS
        } else if (os_strncmp(buf, "TDLS_DISCOVER ", 14) == 0) {
                if (wpa_supplicant_ctrl_iface_tdls_discover(wpa_s, buf + 14))

diff --git a/wpa_supplicant/wpa_cli.c b/wpa_supplicant/wpa_cli.c
index a8e8488..bed13dd 100644 (file)
--- a/wpa_supplicant/wpa_cli.c
+++ b/wpa_supplicant/wpa_cli.c
@@ -714,6 +714,23 @@ static int wpa_cli_cmd_bss_expire_count(struct wpa_ctrl *ctrl, int argc,
 }
 
 
+static int wpa_cli_cmd_bss_flush(struct wpa_ctrl *ctrl, int argc, char *argv[])
+{
+       char cmd[256];
+       int res;
+
+       if (argc < 1)
+               res = os_snprintf(cmd, sizeof(cmd), "BSS_FLUSH 0");
+       else
+               res = os_snprintf(cmd, sizeof(cmd), "BSS_FLUSH %s", argv[0]);
+       if (res < 0 || (size_t) res >= sizeof(cmd) - 1) {
+               printf("Too long BSS_FLUSH command.\n");
+               return -1;
+       }
+       return wpa_ctrl_command(ctrl, cmd);
+}
+
+
 static int wpa_cli_cmd_stkstart(struct wpa_ctrl *ctrl, int argc,
                                char *argv[])
 {
@@ -3179,6 +3196,9 @@ static struct wpa_cli_cmd wpa_cli_commands[] = {
        { "bss_expire_count", wpa_cli_cmd_bss_expire_count,
          cli_cmd_flag_none,
          "<value> = set BSS expiration scan count parameter" },
+       { "bss_flush", wpa_cli_cmd_bss_flush,
+         cli_cmd_flag_none,
+         "<value> = set BSS flush age (0 by default)" },
        { "stkstart", wpa_cli_cmd_stkstart,
          cli_cmd_flag_none,
          "<addr> = request STK negotiation with <addr>" },