C++ (Cpp) wext_freq2float Examples

Example #1

File: iwinfo_wext.c Project: houzhenggang/20160317_EA1301_mtksdk_openwrt_2.6.36_v1.3

int wext_get_channel(const char *ifname, int *buf)
{
	struct iwreq wrq;
	struct iw_range range;
	double freq;
	int i;

	if(wext_ioctl(ifname, SIOCGIWFREQ, &wrq) >= 0)
	{
		if( wrq.u.freq.m >= 1000 )
		{
			freq = wext_freq2float(&wrq.u.freq);
			wrq.u.data.pointer = (caddr_t) ⦥
			wrq.u.data.length  = sizeof(struct iw_range);
			wrq.u.data.flags   = 0;

			if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0)
			{
				for(i = 0; i < range.num_frequency; i++)
				{
					if( wext_freq2float(&range.freq[i]) == freq )
					{
						*buf = range.freq[i].i;
						return 0;
					}
				}
			}
		}
		else
		{
			*buf = wrq.u.freq.m;
			return 0;
		}
	}
	return -1;

/*	char cmd[256];
	sprintf(cmd, "iwlist %s channel | grep 'Current Channel' | awk -F':' '{print $2}'", ifname);
	FILE *fp = popen(cmd, "r");
	fscanf(fp, "%d\n", buf);
	pclose(fp);
	return 0;
*/
}

Example #2

File: iwinfo_wext.c Project: fededim/openwrt-witi

static inline int wext_freq2mhz(const struct iw_freq *in)
{

	if( in->e == 6 )
	{
		return in->m;
	}
	else
	{
		return (int)(wext_freq2float(in) / 1000000);
	}
}

Example #3

File: iwinfo_wext.c Project: BeanGu/LuCI

int wext_get_channel(const char *ifname, int *buf)
{
	struct iwreq wrq;
	struct iw_range range;
	double freq;
	int i;

	if(wext_ioctl(ifname, SIOCGIWFREQ, &wrq) >= 0)
	{
		if( wrq.u.freq.m >= 1000 )
		{
			freq = wext_freq2float(&wrq.u.freq);
			wrq.u.data.pointer = (caddr_t) ⦥
			wrq.u.data.length  = sizeof(struct iw_range);
			wrq.u.data.flags   = 0;

			if(wext_ioctl(ifname, SIOCGIWRANGE, &wrq) >= 0)
			{
				for(i = 0; i < range.num_frequency; i++)
				{
					if( wext_freq2float(&range.freq[i]) == freq )
					{
						*buf = range.freq[i].i;
						return 0;
					}
				}
			}
		}
		else
		{
			*buf = wrq.u.freq.m;
			return 0;
		}
	}

	return -1;
}

Example #4

File: iwinfo_rt2860v2_scan.c Project: jhbsz/openwrt-barrier_breaker

static inline void wext_fill_entry(struct stream_descr *stream, struct iw_event *event,
	struct iw_range *iw_range, int has_range, struct iwinfo_scanlist_entry *e)
{
	int i;
	double freq;

	/* Now, let's decode the event */
	switch(event->cmd)
	{
		case SIOCGIWAP:
			memcpy(e->mac, &event->u.ap_addr.sa_data, 6);
			break;

		case SIOCGIWFREQ:
			if( event->u.freq.m >= 1000 )
			{
				freq = wext_freq2float(&(event->u.freq));

				for(i = 0; i < iw_range->num_frequency; i++)
				{
					if( wext_freq2float(&iw_range->freq[i]) == freq )
					{
						e->channel = iw_range->freq[i].i;
						break;
					}
				}
			}
			else
			{
				e->channel = event->u.freq.m;
			}

			break;

		case SIOCGIWMODE:
			switch(event->u.mode)
			{
				case 1:
					e->mode = IWINFO_OPMODE_ADHOC;
					break;

				case 2:
				case 3:
					e->mode = IWINFO_OPMODE_MASTER;
					break;

				default:
					e->mode = IWINFO_OPMODE_UNKNOWN;
					break;
			}

			break;

		case SIOCGIWESSID:
			if( event->u.essid.pointer && event->u.essid.length && event->u.essid.flags )
				memcpy(e->ssid, event->u.essid.pointer, event->u.essid.length);

			break;

		case SIOCGIWENCODE:
			e->crypto.enabled = !(event->u.data.flags & IW_ENCODE_DISABLED);
			break;

		case IWEVQUAL:
			e->signal = event->u.qual.level;
			e->quality = event->u.qual.qual;
			e->quality_max = iw_range->max_qual.qual;
			break;
#if 0
		case SIOCGIWRATE:
			if(state->val_index == 0)
			{
				lua_pushstring(L, "bitrates");
				lua_newtable(L);
			}
			//iw_print_bitrate(buffer, sizeof(buffer), event->u.bitrate.value);
			snprintf(buffer, sizeof(buffer), "%d", event->u.bitrate.value);
			lua_pushinteger(L, state->val_index + 1);
			lua_pushstring(L, buffer);
			lua_settable(L, -3);

			/* Check for termination */
			if(stream->value == NULL)
			{
				lua_settable(L, -3);
				state->val_index = 0;
			} else
				state->val_index++;
			break;
#endif
		 case IWEVGENIE:
			wext_fill_wpa(event->u.data.pointer, event->u.data.length, e);
			break;
	}
}