| /* |
| * Copyright (c) 2013-2018 The Linux Foundation. All rights reserved. |
| * |
| * 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. |
| */ |
| |
| #ifndef _WLAN_HDD_WOWL_H |
| #define _WLAN_HDD_WOWL_H |
| |
| /** |
| * DOC: wlan_hdd_wowl |
| * |
| * This module houses all the logic for WOWL in HDD. |
| * |
| * It provides the following APIs |
| * |
| * - Ability to enable/disable following WoWL modes |
| * 1) Magic packet (MP) mode |
| * 2) Pattern Byte Matching (PBM) mode |
| * - Ability to add/remove patterns for PBM |
| * |
| * A Magic Packet is a packet that contains 6 0xFFs followed by 16 |
| * contiguous copies of the receiving NIC's Ethernet address. There is |
| * no API to configure Magic Packet Pattern. |
| * |
| * Wakeup pattern (used for PBM) is defined as following: |
| * typedef struct |
| * { |
| * U8 PatternSize; // Non-Zero pattern size |
| * U8 PatternMaskSize; // Non-zero pattern mask size |
| * U8 PatternMask[PatternMaskSize]; // Pattern mask |
| * U8 Pattern[PatternSize]; // Pattern |
| * } hdd_wowl_ptrn_t; |
| * |
| * PatternSize and PatternMaskSize indicate size of the variable |
| * length Pattern and PatternMask. PatternMask indicates which bytes |
| * of an incoming packet should be compared with corresponding bytes |
| * in the pattern. |
| * |
| * Maximum allowed pattern size is 128 bytes. Maximum allowed |
| * PatternMaskSize is 16 bytes. |
| * |
| * Maximum number of patterns that can be configured is 8 |
| * |
| * HDD will add following 2 commonly used patterns for PBM by default: |
| * 1) ARP Broadcast Pattern |
| * 2) Unicast Pattern |
| * |
| * However note that WoWL will not be enabled by default by HDD. WoWL |
| * needs to enabled explcitly by exercising the iwpriv command. |
| * |
| * HDD will expose an API that accepts patterns as Hex string in the |
| * following format: |
| * "PatternSize:PatternMaskSize:PatternMask:Pattern" |
| * |
| * Multiple patterns can be specified by deleimiting each pattern with |
| * the ';' token: |
| * "PatternSize1:PatternMaskSize1:PatternMask1:Pattern1;PatternSize2:..." |
| * |
| * Patterns can be configured dynamically via iwpriv cmd or statically |
| * via qcom_cfg.ini file |
| * |
| * PBM (when enabled) can perform filtering on unicast data or |
| * broadcast data or both. These configurations are part of factory |
| * defaults (cfg.dat) and the default behavior is to perform filtering |
| * on both unicast and data frames. |
| * |
| * MP filtering (when enabled) is performed ALWAYS on both unicast and |
| * broadcast data frames. |
| * |
| * Management frames are not subjected to WoWL filtering and are |
| * discarded when WoWL is enabled. |
| * |
| * Whenever a patern match succeeds, RX path is restored and packets |
| * (both management and data) will be pushed to the host from that |
| * point onwards. Therefore, exit from WoWL is implicit and happens |
| * automatically when the first packet match succeeds. |
| * |
| * WoWL works on top of BMPS. So when WoWL is requested, SME will |
| * attempt to put the device in BMPS mode (if not already in BMPS). If |
| * attempt to BMPS fails, request for WoWL will be rejected. |
| */ |
| |
| #include <qdf_types.h> |
| #include "wlan_pmo_wow_public_struct.h" |
| |
| #define WOWL_PTRN_MAX_SIZE 146 |
| #define WOWL_PTRN_MASK_MAX_SIZE 19 |
| #define WOWL_MAX_PTRNS_ALLOWED PMO_WOW_FILTERS_MAX |
| |
| /** |
| * hdd_add_wowl_ptrn() - Function which will add the WoWL pattern to be |
| * used when PBM filtering is enabled |
| * @adapter: pointer to the adapter |
| * @ptrn: pointer to the pattern string to be added |
| * |
| * Return: false if any errors encountered, true otherwise |
| */ |
| bool hdd_add_wowl_ptrn(struct hdd_adapter *adapter, const char *ptrn); |
| |
| /** |
| * hdd_del_wowl_ptrn() - Function which will remove a WoWL pattern |
| * @adapter: pointer to the adapter |
| * @ptrn: pointer to the pattern string to be removed |
| * |
| * Return: false if any errors encountered, true otherwise |
| */ |
| bool hdd_del_wowl_ptrn(struct hdd_adapter *adapter, const char *ptrn); |
| |
| /** |
| * hdd_add_wowl_ptrn_debugfs() - Function which will add a WoW pattern |
| * sent from debugfs interface |
| * @adapter: pointer to the adapter |
| * @pattern_idx: index of the pattern to be added |
| * @pattern_offset: offset of the pattern in the frame payload |
| * @pattern_buf: pointer to the pattern hex string to be added |
| * @pattern_mask: pointer to the pattern mask hex string |
| * |
| * Return: false if any errors encountered, true otherwise |
| */ |
| bool hdd_add_wowl_ptrn_debugfs(struct hdd_adapter *adapter, uint8_t pattern_idx, |
| uint8_t pattern_offset, char *pattern_buf, |
| char *pattern_mask); |
| |
| /** |
| * hdd_del_wowl_ptrn_debugfs() - Function which will remove a WoW pattern |
| * sent from debugfs interface |
| * @adapter: pointer to the adapter |
| * @pattern_idx: index of the pattern to be removed |
| * |
| * Return: false if any errors encountered, true otherwise |
| */ |
| bool hdd_del_wowl_ptrn_debugfs(struct hdd_adapter *adapter, |
| uint8_t pattern_idx); |
| |
| /** |
| * hdd_free_user_wowl_ptrns() - Deinit function to cleanup WoWL allocated memory |
| * |
| * Return: None |
| */ |
| void hdd_free_user_wowl_ptrns(void); |
| |
| #endif /* #ifndef _WLAN_HDD_WOWL_H */ |