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wifi: properly display ad-hoc networks

Patch status: merged

Patch by Adrien Schildknecht

Long description:

No statistics are displayed with ad-hoc networks since none are available.

To apply this patch, use:
curl http://cr.i3wm.org/patch/10/raw.patch | git am

b/src/print_wireless_info.c

@@ -93,6 +93,15 @@ static int get_wireless_info(const char *interface, wireless_info_t *info) {
                 info->essid[IW_ESSID_MAX_SIZE] = '\0';
         }
 
+        /* If the function iw_get_stats does not return proper stats, the
+           wifi is considered as down.
+           Since ad-hoc network does not have theses stats, we need to return
+           here for this mode. */
+        if (wcfg.mode == 1) {
+                close(skfd);
+                return 1;
+        }
+
         /* Wireless quality is a relative value in a driver-specific range.
            Signal and noise level can be either relative or absolute values
            in dBm. Furthermore, noise and quality can be expressed directly

14	@@ -93,6 +93,15 @@ static int get_wireless_info(const char interface, wireless_info_t info) {
15	info->essid[IW_ESSID_MAX_SIZE] = '\0';
16	}
17
18	+ /* If the function iw_get_stats does not return proper stats, the
19	+ wifi is considered as down.
20	+ Since ad-hoc network does not have theses stats, we need to return
21	+ here for this mode. */
22	+ if (wcfg.mode == 1) {
23	+ close(skfd);
24	+ return 1;
25	+ }
26	+
27	/* Wireless quality is a relative value in a driver-specific range.
28	Signal and noise level can be either relative or absolute values
29	in dBm. Furthermore, noise and quality can be expressed directly