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/*
* Copyright (c) 2016 Broadcom
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/netdevice.h>
#include <net/cfg80211.h>
#include "core.h"
#include "debug.h"
#include "pno.h"
#include "fwil.h"
#include "fwil_types.h"
#define BRCMF_PNO_VERSION 2
#define BRCMF_PNO_TIME 30
#define BRCMF_PNO_REPEAT 4
#define BRCMF_PNO_FREQ_EXPO_MAX 3
#define BRCMF_PNO_ENABLE_ADAPTSCAN_BIT 6
#define BRCMF_PNO_SCAN_INCOMPLETE 0
#define BRCMF_PNO_WPA_AUTH_ANY 0xFFFFFFFF
#define BRCMF_PNO_HIDDEN_BIT 2
int brcmf_pno_clean(struct brcmf_if *ifp)
{
int ret;
/* Disable pfn */
ret = brcmf_fil_iovar_int_set(ifp, "pfn", 0);
if (ret == 0) {
/* clear pfn */
ret = brcmf_fil_iovar_data_set(ifp, "pfnclear", NULL, 0);
}
if (ret < 0)
brcmf_err("failed code %d\n", ret);
return ret;
}
int brcmf_pno_config(struct brcmf_if *ifp,
struct cfg80211_sched_scan_request *request)
{
struct brcmf_pno_param_le pfn_param;
struct brcmf_pno_macaddr_le pfn_mac;
s32 err;
u8 *mac_mask;
int i;
memset(&pfn_param, 0, sizeof(pfn_param));
pfn_param.version = cpu_to_le32(BRCMF_PNO_VERSION);
/* set extra pno params */
pfn_param.flags = cpu_to_le16(1 << BRCMF_PNO_ENABLE_ADAPTSCAN_BIT);
pfn_param.repeat = BRCMF_PNO_REPEAT;
pfn_param.exp = BRCMF_PNO_FREQ_EXPO_MAX;
/* set up pno scan fr */
pfn_param.scan_freq = cpu_to_le32(BRCMF_PNO_TIME);
err = brcmf_fil_iovar_data_set(ifp, "pfn_set", &pfn_param,
sizeof(pfn_param));
if (err) {
brcmf_err("pfn_set failed, err=%d\n", err);
return err;
}
/* Find out if mac randomization should be turned on */
if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR))
return 0;
pfn_mac.version = BRCMF_PFN_MACADDR_CFG_VER;
pfn_mac.flags = BRCMF_PFN_MAC_OUI_ONLY | BRCMF_PFN_SET_MAC_UNASSOC;
memcpy(pfn_mac.mac, request->mac_addr, ETH_ALEN);
mac_mask = request->mac_addr_mask;
for (i = 0; i < ETH_ALEN; i++) {
pfn_mac.mac[i] &= mac_mask[i];
pfn_mac.mac[i] |= get_random_int() & ~(mac_mask[i]);
}
/* Clear multi bit */
pfn_mac.mac[0] &= 0xFE;
/* Set locally administered */
pfn_mac.mac[0] |= 0x02;
err = brcmf_fil_iovar_data_set(ifp, "pfn_macaddr", &pfn_mac,
sizeof(pfn_mac));
if (err)
brcmf_err("pfn_macaddr failed, err=%d\n", err);
return err;
}
int brcmf_pno_add_ssid(struct brcmf_if *ifp, struct cfg80211_ssid *ssid,
bool active)
{
struct brcmf_pno_net_param_le pfn;
pfn.auth = cpu_to_le32(WLAN_AUTH_OPEN);
pfn.wpa_auth = cpu_to_le32(BRCMF_PNO_WPA_AUTH_ANY);
pfn.wsec = cpu_to_le32(0);
pfn.infra = cpu_to_le32(1);
if (active)
pfn.flags = cpu_to_le32(1 << BRCMF_PNO_HIDDEN_BIT);
pfn.ssid.SSID_len = cpu_to_le32(ssid->ssid_len);
memcpy(pfn.ssid.SSID, ssid->ssid, ssid->ssid_len);
return brcmf_fil_iovar_data_set(ifp, "pfn_add", &pfn, sizeof(pfn));
}
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