/*
* ---------------------------------------------------------------------------
* FILE: wext_events.c
*
* PURPOSE:
* Code to generate iwevents.
*
* Copyright (C) 2006-2008 by Cambridge Silicon Radio Ltd.
*
* Refer to LICENSE.txt included with this source code for details on
* the license terms.
*
* ---------------------------------------------------------------------------
*/
#include <linux/types.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>
#include "csr_wifi_hip_unifi.h"
#include "unifi_priv.h"
/*
* ---------------------------------------------------------------------------
* wext_send_assoc_event
*
* Send wireless-extension events up to userland to announce
* successful association with an AP.
*
* Arguments:
* priv Pointer to driver context.
* bssid MAC address of AP we associated with
* req_ie, req_ie_len IEs in the original request
* resp_ie, resp_ie_len IEs in the response
*
* Returns:
* None.
*
* Notes:
* This is sent on first successful association, and again if we
* roam to another AP.
* ---------------------------------------------------------------------------
*/
void
wext_send_assoc_event(unifi_priv_t *priv, unsigned char *bssid,
unsigned char *req_ie, int req_ie_len,
unsigned char *resp_ie, int resp_ie_len,
unsigned char *scan_ie, unsigned int scan_ie_len)
{
#if WIRELESS_EXT > 17
union iwreq_data wrqu;
if (req_ie_len == 0) req_ie = NULL;
wrqu.data.length = req_ie_len;
wrqu.data.flags = 0;
wireless_send_event(priv->netdev[CSR_WIFI_INTERFACE_IN_USE], IWEVASSOCREQIE, &wrqu, req_ie);
if (resp_ie_len == 0) resp_ie = NULL;
wrqu.data.length = resp_ie_len;
wrqu.data.flags = 0;
wireless_send_event(priv->netdev[CSR_WIFI_INTERFACE_IN_USE], IWEVASSOCRESPIE, &wrqu, resp_ie);
if (scan_ie_len > 0) {
wrqu.data.length = scan_ie_len;
wrqu.data.flags = 0;
wireless_send_event(priv->netdev[CSR_WIFI_INTERFACE_IN_USE], IWEVGENIE, &wrqu, scan_ie);
}
memcpy(&wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
wireless_send_event(priv->netdev[CSR_WIFI_INTERFACE_IN_USE], SIOCGIWAP, &wrqu, NULL);
#endif
} /* wext_send_assoc_event() */
/*
* ---------------------------------------------------------------------------
* wext_send_disassoc_event
*
* Send a wireless-extension event up to userland to announce
* that we disassociated from an AP.
*
* Arguments:
* priv Pointer to driver context.
*
* Returns:
* None.
*
* Notes:
* The semantics of wpa_supplicant (the userland SME application) are
* that a SIOCGIWAP event with MAC address of all zero means
* disassociate.
* ---------------------------------------------------------------------------
*/
void
wext_send_disassoc_event(unifi_priv_t *priv)
{
#if WIRELESS_EXT > 17
union iwreq_data wrqu;
memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
wireless_send_event(priv->netdev[CSR_WIFI_INTERFACE_IN_USE], SIOCGIWAP, &wrqu, NULL);
#endif
} /* wext_send_disassoc_event() */
/*
* ---------------------------------------------------------------------------
* wext_send_scan_results_event
*
* Send wireless-extension events up to userland to announce
* completion of a scan.
*
* Arguments:
* priv Pointer to driver context.
*
* Returns:
* None.
*
* Notes:
* This doesn't actually report the results, they are retrieved
* using the SIOCGIWSCAN ioctl command.
* ---------------------------------------------------------------------------
*/
void
wext_send_scan_results_event(unifi_priv_t *priv)
{
#if WIRELESS_EXT > 17
union iwreq_data wrqu;
wrqu.data.length = 0;
wrqu.data.flags = 0;
wireless_send_event(priv->netdev[CSR_WIFI_INTERFACE_IN_USE], SIOCGIWSCAN, &wrqu, NULL);
#endif
} /* wext_send_scan_results_event() */
/*
* ---------------------------------------------------------------------------
* wext_send_michaelmicfailure_event
*
* Send wireless-extension events up to userland to announce
* completion of a scan.
*
* Arguments:
* priv Pointer to driver context.
* count, macaddr, key_type, key_idx, tsc
* Parameters from report from UniFi.
*
* Returns:
* None.
* ---------------------------------------------------------------------------
*/
#if WIRELESS_EXT >= 18
static inline void
_send_michaelmicfailure_event(struct net_device *dev,
int count, const unsigned char *macaddr,
int key_type, int key_idx,
unsigned char *tsc)
{
union iwreq_data wrqu;
struct iw_michaelmicfailure mmf;
memset(&mmf, 0, sizeof(mmf));
mmf.flags = key_idx & IW_MICFAILURE_KEY_ID;
if (key_type == CSR_GROUP) {
mmf.flags |= IW_MICFAILURE_GROUP;
} else {
mmf.flags |= IW_MICFAILURE_PAIRWISE;
}
mmf.flags |= ((count << 5) & IW_MICFAILURE_COUNT);
mmf.src_addr.sa_family = ARPHRD_ETHER;
memcpy(mmf.src_addr.sa_data, macaddr, ETH_ALEN);
memcpy(mmf.tsc, tsc, IW_ENCODE_SEQ_MAX_SIZE);
memset(&wrqu, 0, sizeof(wrqu));
wrqu.data.length = sizeof(mmf);
wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&mmf);
}
#elif WIRELESS_EXT >= 15
static inline void
_send_michaelmicfailure_event(struct net_device *dev,
int count, const unsigned char *macaddr,
int key_type, int key_idx,
unsigned char *tsc)
{
union iwreq_data wrqu;
char buf[128];
sprintf(buf,
"MLME-MICHAELMICFAILURE.indication(keyid=%d %scast addr=%pM)",
key_idx, (key_type == CSR_GROUP) ? "broad" : "uni", macaddr);
memset(&wrqu, 0, sizeof(wrqu));
wrqu.data.length = strlen(buf);
wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
}
#else /* WIRELESS_EXT >= 15 */
static inline void
_send_michaelmicfailure_event(struct net_device *dev,
int count, const unsigned char *macaddr,
int key_type, int key_idx,
unsigned char *tsc)
{
/* Not supported before WEXT 15 */
}
#endif /* WIRELESS_EXT >= 15 */
void
wext_send_michaelmicfailure_event(unifi_priv_t *priv,
u16 count,
CsrWifiMacAddress address,
CsrWifiSmeKeyType keyType,
u16 interfaceTag)
{
unsigned char tsc[8] = {0};
if (interfaceTag >= CSR_WIFI_NUM_INTERFACES) {
unifi_error(priv, "wext_send_michaelmicfailure_event bad interfaceTag\n");
return;
}
_send_michaelmicfailure_event(priv->netdev[interfaceTag],
count,
address.a,
keyType,
0,
tsc);
} /* wext_send_michaelmicfailure_event() */
void
wext_send_pmkid_candidate_event(unifi_priv_t *priv, CsrWifiMacAddress bssid, u8 preauth_allowed, u16 interfaceTag)
{
#if WIRELESS_EXT > 17
union iwreq_data wrqu;
struct iw_pmkid_cand pmkid_cand;
if (interfaceTag >= CSR_WIFI_NUM_INTERFACES) {
unifi_error(priv, "wext_send_pmkid_candidate_event bad interfaceTag\n");
return;
}
memset(&pmkid_cand, 0, sizeof(pmkid_cand));
if (preauth_allowed) {
pmkid_cand.flags |= IW_PMKID_CAND_PREAUTH;
}
pmkid_cand.bssid.sa_family = ARPHRD_ETHER;
memcpy(pmkid_cand.bssid.sa_data, bssid.a, ETH_ALEN);
/* Used as priority, smaller the number higher the priority, not really used in our case */
pmkid_cand.index = 1;
memset(&wrqu, 0, sizeof(wrqu));
wrqu.data.length = sizeof(pmkid_cand);
wireless_send_event(priv->netdev[interfaceTag], IWEVPMKIDCAND, &wrqu, (char *)&pmkid_cand);
#endif
} /* wext_send_pmkid_candidate_event() */
/*
* Send a custom WEXT event to say we have completed initialisation
* and are now ready for WEXT ioctls. Used by Android wpa_supplicant.
*/
void
wext_send_started_event(unifi_priv_t *priv)
{
#if WIRELESS_EXT > 17
union iwreq_data wrqu;
char data[] = "STARTED";
wrqu.data.length = sizeof(data);
wrqu.data.flags = 0;
wireless_send_event(priv->netdev[CSR_WIFI_INTERFACE_IN_USE], IWEVCUSTOM, &wrqu, data);
#endif
} /* wext_send_started_event() */