/*****************************************************************************
函 数 名 : hmac_roam_alg_bss_check
功能描述 :
输入参数 :
输出参数 : 无
返 回 值 : OAL_SUCC 或 失败错误码
调用函数 :
被调函数 :
修改历史 :
1.日 期 : 2015年3月18日
作 者 : g00260350
修改内容 : 新生成函数
*****************************************************************************/
oal_uint32 hmac_roam_alg_bss_check(hmac_roam_info_stru *pst_roam_info, mac_bss_dscr_stru *pst_bss_dscr)
{
hmac_vap_stru *pst_hmac_vap;
mac_vap_stru *pst_mac_vap;
hmac_roam_alg_stru *pst_roam_alg;
mac_cap_info_stru *pst_cap_info;
oal_uint8 *puc_pmkid;
mac_cfg_ssid_param_stru st_cfg_ssid;
oal_uint32 ul_ret;
oal_uint32 ul_avail_channel_capacity;
oal_uint8 uc_stru_len;
oal_int8 c_delta_rssi;
oal_int8 c_tmp_rssi;
if ((OAL_PTR_NULL == pst_roam_info) || (OAL_PTR_NULL == pst_bss_dscr))
{
OAM_ERROR_LOG0(0, OAM_SF_ROAM, "{hmac_roam_alg_bss_check::param null.}");
return OAL_ERR_CODE_PTR_NULL;
}
pst_hmac_vap = pst_roam_info->pst_hmac_vap;
if (OAL_PTR_NULL == pst_hmac_vap)
{
return OAL_ERR_CODE_ROAM_INVALID_VAP;
}
pst_mac_vap = &(pst_hmac_vap->st_vap_base_info);
mac_mib_get_ssid(pst_mac_vap, &uc_stru_len, (oal_uint8 *)(&st_cfg_ssid));
if ((OAL_STRLEN(pst_bss_dscr->ac_ssid) != st_cfg_ssid.uc_ssid_len) ||
(0 != oal_memcmp(st_cfg_ssid.ac_ssid, pst_bss_dscr->ac_ssid, st_cfg_ssid.uc_ssid_len)))
{
return OAL_SUCC;
}
pst_roam_alg = &(pst_roam_info->st_alg);
/* 挑选HMAC_SCAN_MAX_VALID_SCANNED_BSS_EXPIRE时间以内的有效bss */
if (oal_time_after((oal_uint32)OAL_TIME_GET_STAMP_MS(),(pst_bss_dscr->ul_timestamp + HMAC_SCAN_MAX_VALID_SCANNED_BSS_EXPIRE)))
{
return OAL_SUCC;
}
/* 检查黑名单 */
ul_ret = hmac_roam_alg_find_in_blacklist(pst_roam_info, pst_bss_dscr->auc_bssid);
if (OAL_TRUE == ul_ret)
{
OAM_WARNING_LOG3(0, OAM_SF_ROAM,"{hmac_roam_alg_bss_check:: [%02X:XX:XX:XX:%02X:%02X] in blacklist!}",
pst_bss_dscr->auc_bssid[0], pst_bss_dscr->auc_bssid[4], pst_bss_dscr->auc_bssid[5]);
return OAL_SUCC;
}
/* 排除当前bss的rssi值计算，本地已经保存了dmac上报的rssi */
if (0 == oal_compare_mac_addr(pst_mac_vap->auc_bssid, pst_bss_dscr->auc_bssid))
{
return OAL_SUCC;
}
/* wep的bss直接过滤掉 */
pst_cap_info = (mac_cap_info_stru *)&pst_bss_dscr->us_cap_info;
if ((0 == pst_bss_dscr->st_bss_sec_info.uc_bss_80211i_mode) &&
(0 != pst_cap_info->bit_privacy))
{
return OAL_SUCC;
}
/* open加密方式到wpa/wpa2直接过滤掉 */
/*lint -e731*/
if ((0 == pst_cap_info->bit_privacy) != (OAL_TRUE != mac_mib_get_privacyinvoked(&pst_hmac_vap->st_vap_base_info)))
{
return OAL_SUCC;
}
/*lint +e731*/
/* c_current_rssi为0时，表示linkloss上报的触发，不需要考虑rssi增益 */
c_delta_rssi = hmac_roam_alg_adjust_rssi_increase(pst_roam_info, pst_bss_dscr);
if (c_delta_rssi <= 0)
{
return OAL_SUCC;
}
ul_avail_channel_capacity = hmac_roam_alg_calc_avail_channel_capacity(pst_bss_dscr);
if ((0 != ul_avail_channel_capacity) &&
((OAL_PTR_NULL == pst_roam_alg->pst_max_capacity_bss) ||
(ul_avail_channel_capacity > pst_roam_alg->ul_max_capacity)))
{
//暂时不考虑容量
//pst_roam_alg->ul_max_capacity = ul_avail_channel_capacity;
//pst_roam_alg->pst_max_capacity_bss = pst_bss_dscr;
}
c_tmp_rssi = pst_bss_dscr->c_rssi;
/* 对于已存在pmk缓存的bss进行加分处理 */
puc_pmkid = hmac_vap_get_pmksa(pst_hmac_vap, pst_bss_dscr->auc_bssid);
if (OAL_PTR_NULL != puc_pmkid)
{
c_tmp_rssi += ROAM_RSSI_DIFF_4_DB;
}
if ((OAL_PTR_NULL == pst_roam_alg->pst_max_rssi_bss) ||
(c_tmp_rssi > pst_roam_alg->c_max_rssi))
{
pst_roam_alg->c_max_rssi = c_tmp_rssi;
pst_roam_alg->pst_max_rssi_bss = pst_bss_dscr;
}
return OAL_SUCC;
}
oal_uint32 hmac_roam_alg_bss_check(hmac_roam_info_stru *pst_roam_info, mac_bss_dscr_stru *pst_bss_dscr)
{
hmac_vap_stru *pst_hmac_vap;
mac_vap_stru *pst_mac_vap;
hmac_roam_alg_stru *pst_roam_alg;
mac_cap_info_stru *pst_cap_info;
mac_cfg_ssid_param_stru st_cfg_ssid;
oal_uint32 ul_ret;
oal_uint32 ul_avail_channel_capacity;
oal_uint8 uc_stru_len;
oal_int8 c_delta_rssi;
if ((OAL_PTR_NULL == pst_roam_info) || (OAL_PTR_NULL == pst_bss_dscr))
{
OAM_ERROR_LOG0(0, OAM_SF_ROAM, "{hmac_roam_alg_bss_check::param null.}");
return OAL_ERR_CODE_PTR_NULL;
}
pst_hmac_vap = pst_roam_info->pst_hmac_vap;
if (OAL_PTR_NULL == pst_hmac_vap)
{
return OAL_ERR_CODE_ROAM_INVALID_VAP;
}
pst_mac_vap = &(pst_hmac_vap->st_vap_base_info);
mac_mib_get_ssid(pst_mac_vap, &uc_stru_len, (oal_uint8 *)(&st_cfg_ssid));
if ((OAL_STRLEN(pst_bss_dscr->ac_ssid) != st_cfg_ssid.uc_ssid_len) ||
(0 != oal_memcmp(st_cfg_ssid.ac_ssid, pst_bss_dscr->ac_ssid, st_cfg_ssid.uc_ssid_len)))
{
return OAL_SUCC;
}
pst_roam_alg = &(pst_roam_info->st_alg);
/* 检查黑名单 */
ul_ret = hmac_roam_alg_find_in_blacklist(pst_roam_info, pst_bss_dscr->auc_bssid);
if (OAL_TRUE == ul_ret)
{
return OAL_SUCC;
}
/* 排除当前bss的rssi值计算，本地已经保存了dmac上报的rssi */
if (0 == oal_compare_mac_addr(pst_mac_vap->auc_bssid, pst_bss_dscr->auc_bssid))
{
return OAL_SUCC;
}
/* wep的bss直接过滤掉 */
pst_cap_info = (mac_cap_info_stru *)&pst_bss_dscr->us_cap_info;
if ((0 == pst_bss_dscr->st_bss_sec_info.uc_bss_80211i_mode) &&
(0 != pst_cap_info->bit_privacy))
{
return OAL_SUCC;
}
/* open加密方式到wpa/wpa2直接过滤掉 */
/*lint -e731*/
if ((0 == pst_cap_info->bit_privacy) != (OAL_TRUE != mac_mib_get_privacyinvoked(&pst_hmac_vap->st_vap_base_info)))
{
return OAL_SUCC;
}
/*lint +e731*/
/* c_current_rssi为0时，表示linkloss上报的触发，不需要考虑rssi增益 */
c_delta_rssi = hmac_roam_alg_adjust_rssi_increase(pst_roam_info, pst_bss_dscr);
if (c_delta_rssi <= 0)
{
return OAL_SUCC;
}
ul_avail_channel_capacity = hmac_roam_alg_calc_avail_channel_capacity(pst_bss_dscr);
if ((0 != ul_avail_channel_capacity) &&
((OAL_PTR_NULL == pst_roam_alg->pst_max_capacity_bss) ||
(ul_avail_channel_capacity > pst_roam_alg->ul_max_capacity)))
{
//暂时不考虑容量
//pst_roam_alg->ul_max_capacity = ul_avail_channel_capacity;
//pst_roam_alg->pst_max_capacity_bss = pst_bss_dscr;
}
if ((OAL_PTR_NULL == pst_roam_alg->pst_max_rssi_bss) ||
(pst_bss_dscr->c_rssi > pst_roam_alg->c_max_rssi))
{
pst_roam_alg->c_max_rssi = pst_bss_dscr->c_rssi;
pst_roam_alg->pst_max_rssi_bss = pst_bss_dscr;
}
return OAL_SUCC;
}
