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iwinfo: when using nl80211, parse interface combinations instead of creating/deleting interfaces 

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 37983
lede-17.01
Felix Fietkau 2013-09-14 14:46:51 +00:00
parent 6eeb0261e6
commit 28eceb0343
1 changed files with 57 additions and 9 deletions
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66
package/network/utils/iwinfo/src/iwinfo_nl80211.c
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@ -2212,22 +2212,70 @@ int nl80211_get_hwmodelist(const char *ifname, int *buf)
return *buf ? 0 : -1;
}
int nl80211_get_mbssid_support(const char *ifname, int *buf)
static int nl80211_get_ifcomb_cb(struct nl_msg *msg, void *arg)
{
/* Test whether we can create another interface */
char *nif = nl80211_ifadd(ifname);
struct nlattr **attr = nl80211_parse(msg);
struct nlattr *comb;
int *ret = arg;
int comb_rem, limit_rem, mode_rem;
if (nif)
*ret = 0;
if (!attr[NL80211_ATTR_INTERFACE_COMBINATIONS])
return NL_SKIP;
nla_for_each_nested(comb, attr[NL80211_ATTR_INTERFACE_COMBINATIONS], comb_rem)
{
*buf = (iwinfo_ifmac(nif) && iwinfo_ifup(nif));
static struct nla_policy iface_combination_policy[NUM_NL80211_IFACE_COMB] = {
[NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED },
[NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 },
};
struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB];
static struct nla_policy iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = {
[NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED },
[NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 },
};
struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT];
struct nlattr *limit;
iwinfo_ifdown(nif);
nl80211_ifdel(nif);
nla_parse_nested(tb_comb, NL80211_BAND_ATTR_MAX, comb, iface_combination_policy);
return 0;
if (!tb_comb[NL80211_IFACE_COMB_LIMITS])
continue;
nla_for_each_nested(limit, tb_comb[NL80211_IFACE_COMB_LIMITS], limit_rem)
{
struct nlattr *mode;
nla_parse_nested(tb_limit, NUM_NL80211_IFACE_LIMIT, limit, iface_limit_policy);
if (!tb_limit[NL80211_IFACE_LIMIT_TYPES] ||
!tb_limit[NL80211_IFACE_LIMIT_MAX])
continue;
if (nla_get_u32(tb_limit[NL80211_IFACE_LIMIT_MAX]) < 2)
continue;
nla_for_each_nested(mode, tb_limit[NL80211_IFACE_LIMIT_TYPES], mode_rem) {
if (nla_type(mode) == NL80211_IFTYPE_AP)
*ret = 1;
}
}
}
return -1;
return NL_SKIP;
}
int nl80211_get_mbssid_support(const char *ifname, int *buf)
{
struct nl80211_msg_conveyor *req;
req = nl80211_msg(ifname, NL80211_CMD_GET_WIPHY, 0);
if (!req)
return -1;
nl80211_send(req, nl80211_get_ifcomb_cb, buf);
nl80211_free(req);
return 0;
}
int nl80211_get_hardware_id(const char *ifname, char *buf)