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nl80211: Support PMKSA candidate events

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This adds support for RSN pre-authentication with nl80211 interface and
drivers that handle roaming internally (i.e., wpa_supplicant is not
responsible for requesting scan results that provide the needed
information without these events).
This commit is contained in:
Jouni Malinen 2011-09-21 16:14:41 +03:00 committed by Jouni Malinen
parent c8c71b395c
commit c36d52427a
1 changed files with 37 additions and 0 deletions
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37
src/drivers/driver_nl80211.c
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@ -1471,6 +1471,40 @@ static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv,
}
static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv,
struct nlattr **tb)
{
struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE];
static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = {
[NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 },
[NL80211_PMKSA_CANDIDATE_BSSID] = {
.minlen = ETH_ALEN,
.maxlen = ETH_ALEN,
},
[NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG },
};
union wpa_event_data data;
if (!tb[NL80211_ATTR_PMKSA_CANDIDATE])
return;
if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE,
tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy))
return;
if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] ||
!cand[NL80211_PMKSA_CANDIDATE_BSSID])
return;
os_memset(&data, 0, sizeof(data));
os_memcpy(data.pmkid_candidate.bssid,
nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN);
data.pmkid_candidate.index =
nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]);
data.pmkid_candidate.preauth =
cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL;
wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data);
}
static int process_event(struct nl_msg *msg, void *arg)
{
struct wpa_driver_nl80211_data *drv = arg;
@ -1578,6 +1612,9 @@ static int process_event(struct nl_msg *msg, void *arg)
case NL80211_CMD_SET_REKEY_OFFLOAD:
nl80211_rekey_offload_event(drv, tb);
break;
case NL80211_CMD_PMKSA_CANDIDATE:
nl80211_pmksa_candidate_event(drv, tb);
break;
default:
wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
"(cmd=%d)", gnlh->cmd);