| /* |
| * Copyright (c) 2011-2017 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * 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. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| /**========================================================================= |
| |
| \file lim_session_utils.c |
| \brief implementation for lim Session Utility APIs |
| \author Sunit Bhatia |
| ========================================================================*/ |
| |
| /*-------------------------------------------------------------------------- |
| Include Files |
| ------------------------------------------------------------------------*/ |
| #include "ani_global.h" |
| #include "lim_ft_defs.h" |
| #include "lim_session.h" |
| #include "lim_session_utils.h" |
| #include "lim_utils.h" |
| |
| /** |
| * is_lim_session_off_channel() - checks if any other off channel session exists |
| * @mac_ctx: Global MAC context. |
| * @sessionId: PE session ID. |
| * |
| * Return: This function returns true if the session Id passed needs to be on |
| * a different channel than atleast one session already active. |
| **/ |
| uint8_t is_lim_session_off_channel(tpAniSirGlobal mac_ctx, uint8_t session_id) |
| { |
| uint8_t i; |
| |
| if (session_id >= mac_ctx->lim.maxBssId) { |
| pe_warn("Invalid session_id: %d", session_id); |
| return false; |
| } |
| |
| for (i = 0; i < mac_ctx->lim.maxBssId; i++) { |
| /* Skip the session_id that is to be joined. */ |
| if (i == session_id) |
| continue; |
| /* |
| * if another session is valid and it is on different channel |
| * then it is an off channel operation. |
| */ |
| if ((mac_ctx->lim.gpSession[i].valid) && |
| (mac_ctx->lim.gpSession[i].currentOperChannel != |
| mac_ctx->lim.gpSession[session_id].currentOperChannel)) |
| return true; |
| } |
| return false; |
| |
| } |
| |
| /** |
| * lim_is_chan_switch_running() - check if channel switch is happening |
| * @mac_ctx: Global MAC context. |
| * |
| * Return: 1 - if channel switch is happening on any session. |
| * 0 - if channel switch is not happening. |
| **/ |
| uint8_t lim_is_chan_switch_running(tpAniSirGlobal mac_ctx) |
| { |
| uint8_t i; |
| |
| for (i = 0; i < mac_ctx->lim.maxBssId; i++) |
| if (mac_ctx->lim.gpSession[i].valid && |
| mac_ctx->lim.gpSession[i].gLimSpecMgmt.dot11hChanSwState |
| == eLIM_11H_CHANSW_RUNNING) |
| return 1; |
| return 0; |
| } |
| |
| /** |
| * lim_is_in_mcc() - check if device is in MCC |
| * @mac_ctx: Global MAC context. |
| * |
| * Return: true - if in MCC. |
| * false - Not in MCC |
| **/ |
| uint8_t lim_is_in_mcc(tpAniSirGlobal mac_ctx) |
| { |
| uint8_t i; |
| uint8_t chan = 0; |
| uint8_t curr_oper_channel = 0; |
| |
| for (i = 0; i < mac_ctx->lim.maxBssId; i++) { |
| /* |
| * if another session is valid and it is on different channel |
| * it is an off channel operation. |
| */ |
| if ((mac_ctx->lim.gpSession[i].valid)) { |
| curr_oper_channel = |
| mac_ctx->lim.gpSession[i].currentOperChannel; |
| if (chan == 0) |
| chan = curr_oper_channel; |
| else if (chan != curr_oper_channel) |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * pe_get_current_stas_count() - Total stations associated on all sessions. |
| * @mac_ctx: Global MAC context. |
| * |
| * Return: true - Number of stations active on all sessions. |
| **/ |
| uint8_t pe_get_current_stas_count(tpAniSirGlobal mac_ctx) |
| { |
| uint8_t i; |
| uint8_t stacount = 0; |
| for (i = 0; i < mac_ctx->lim.maxBssId; i++) |
| if (mac_ctx->lim.gpSession[i].valid == true) |
| stacount += |
| mac_ctx->lim.gpSession[i].gLimNumOfCurrentSTAs; |
| return stacount; |
| } |