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iwinfo: find channel & frequency via nl80211 or hostapd instead of wext 

SVN-Revision: 32630
owl
Jo-Philipp Wich 2012-07-06 01:00:14 +00:00
parent 110fd3525a
commit 4347abcaf6
2 changed files with 60 additions and 13 deletions
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2
package/iwinfo/Makefile
View File

@ -7,7 +7,7 @@
include $(TOPDIR)/rules.mk include $(TOPDIR)/rules.mk
PKG_NAME:=libiwinfo PKG_NAME:=libiwinfo
PKG_RELEASE:=33 PKG_RELEASE:=34
PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME) PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
PKG_CONFIG_DEPENDS := \ PKG_CONFIG_DEPENDS := \

71
package/iwinfo/src/iwinfo_nl80211.c
View File

@ -351,6 +351,17 @@ static int nl80211_freq2channel(int freq)
return (freq / 5) - 1000; return (freq / 5) - 1000;
} }
static int nl80211_channel2freq(int channel)
{
if (channel == 14)
return 2484;
if (channel < 14)
return (channel * 5) + 2407;
return (1000 + channel) * 5;
}
static char * nl80211_getval(const char *ifname, const char *buf, const char *key) static char * nl80211_getval(const char *ifname, const char *buf, const char *key)
{ {
int i, len; int i, len;
@ -751,32 +762,68 @@ int nl80211_get_bssid(const char *ifname, char *buf)
return -1; return -1;
} }
static int nl80211_get_channel_cb(struct nl_msg *msg, void *arg)
{
int *channel = arg;
struct nlattr **attr = nl80211_parse(msg);
struct nlattr *binfo[NL80211_BSS_MAX + 1];
static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
[NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
};
if (attr[NL80211_ATTR_BSS] &&
!nla_parse_nested(binfo, NL80211_BSS_MAX,
attr[NL80211_ATTR_BSS], bss_policy))
{
if (binfo[NL80211_BSS_FREQUENCY])
*channel =
nl80211_freq2channel(nla_get_u32(binfo[NL80211_BSS_FREQUENCY]));
}
return NL_SKIP;
}
int nl80211_get_channel(const char *ifname, int *buf) int nl80211_get_channel(const char *ifname, int *buf)
{ {
char *first; char *res;
struct nl80211_msg_conveyor *req;
if (!wext_get_channel(ifname, buf)) *buf = 0;
return 0;
else if ((first = nl80211_phy2ifname(nl80211_ifname2phy(ifname))) != NULL) if ((res = nl80211_hostapd_info(ifname)) &&
return wext_get_channel(first, buf); (res = nl80211_getval(NULL, res, "channel")))
{
*buf = atoi(res);
}
else
{
res = nl80211_phy2ifname(ifname);
req = nl80211_msg(res ? res : ifname, NL80211_CMD_GET_SCAN, NLM_F_DUMP);
return -1; if (req)
{
nl80211_send(req, nl80211_get_channel_cb, buf);
nl80211_free(req);
}
}
return (*buf == 0) ? -1 : 0;
} }
int nl80211_get_frequency(const char *ifname, int *buf) int nl80211_get_frequency(const char *ifname, int *buf)
{ {
char *first; if (!nl80211_get_channel(ifname, buf))
{
if (!wext_get_frequency(ifname, buf)) *buf = nl80211_channel2freq(*buf);
return 0; return 0;
}
else if ((first = nl80211_phy2ifname(nl80211_ifname2phy(ifname))) != NULL)
return wext_get_frequency(first, buf);
return -1; return -1;
} }
int nl80211_get_txpower(const char *ifname, int *buf) int nl80211_get_txpower(const char *ifname, int *buf)
{ {
return wext_get_txpower(ifname, buf); return wext_get_txpower(ifname, buf);