/* SPDX-License-Identifier: GPL-2.0-only */ /* * IEEE 802.11 mesh definitions * * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen * <jkmaline@cc.hut.fi> * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi> * Copyright (c) 2005, Devicescape Software, Inc. * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net> * Copyright (c) 2013 - 2014 Intel Mobile Communications GmbH * Copyright (c) 2016 - 2017 Intel Deutschland GmbH * Copyright (c) 2018 - 2025 Intel Corporation */ #ifndef LINUX_IEEE80211_MESH_H #define LINUX_IEEE80211_MESH_H #include <linux/types.h> #include <linux/if_ether.h> #define IEEE80211_MAX_MESH_ID_LEN 32 struct ieee80211s_hdr { u8 flags; u8 ttl; __le32 seqnum; u8 eaddr1[ETH_ALEN]; u8 eaddr2[ETH_ALEN]; } __packed __aligned(2); /* Mesh flags */ #define MESH_FLAGS_AE_A4 0x1 #define MESH_FLAGS_AE_A5_A6 0x2 #define MESH_FLAGS_AE 0x3 #define MESH_FLAGS_PS_DEEP 0x4 /** * enum ieee80211_preq_flags - mesh PREQ element flags * * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield */ enum ieee80211_preq_flags { IEEE80211_PREQ_PROACTIVE_PREP_FLAG = 1<<2, }; /** * enum ieee80211_preq_target_flags - mesh PREQ element per target flags * * @IEEE80211_PREQ_TO_FLAG: target only subfield * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield */ enum ieee80211_preq_target_flags { IEEE80211_PREQ_TO_FLAG = 1<<0, IEEE80211_PREQ_USN_FLAG = 1<<2, }; /** * struct ieee80211_mesh_chansw_params_ie - mesh channel switch parameters IE * @mesh_ttl: Time To Live * @mesh_flags: Flags * @mesh_reason: Reason Code * @mesh_pre_value: Precedence Value * * This structure represents the payload of the "Mesh Channel Switch * Parameters element" as described in IEEE Std 802.11-2020 section * 9.4.2.102. */ struct ieee80211_mesh_chansw_params_ie { u8 mesh_ttl; u8 mesh_flags; __le16 mesh_reason; __le16 mesh_pre_value; } __packed; /** * struct ieee80211_meshconf_ie - Mesh Configuration element * @meshconf_psel: Active Path Selection Protocol Identifier * @meshconf_pmetric: Active Path Selection Metric Identifier * @meshconf_congest: Congestion Control Mode Identifier * @meshconf_synch: Synchronization Method Identifier * @meshconf_auth: Authentication Protocol Identifier * @meshconf_form: Mesh Formation Info * @meshconf_cap: Mesh Capability (see &enum mesh_config_capab_flags) * * This structure represents the payload of the "Mesh Configuration * element" as described in IEEE Std 802.11-2020 section 9.4.2.97. */ struct ieee80211_meshconf_ie { u8 meshconf_psel; u8 meshconf_pmetric; u8 meshconf_congest; u8 meshconf_synch; u8 meshconf_auth; u8 meshconf_form; u8 meshconf_cap; } __packed; /** * enum mesh_config_capab_flags - Mesh Configuration IE capability field flags * * @IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS: STA is willing to establish * additional mesh peerings with other mesh STAs * @IEEE80211_MESHCONF_CAPAB_FORWARDING: the STA forwards MSDUs * @IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING: TBTT adjustment procedure * is ongoing * @IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL: STA is in deep sleep mode or has * neighbors in deep sleep mode * * Enumerates the "Mesh Capability" as described in IEEE Std * 802.11-2020 section 9.4.2.97.7. */ enum mesh_config_capab_flags { IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS = 0x01, IEEE80211_MESHCONF_CAPAB_FORWARDING = 0x08, IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING = 0x20, IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL = 0x40, }; #define IEEE80211_MESHCONF_FORM_CONNECTED_TO_GATE 0x1 /* * mesh channel switch parameters element's flag indicator * */ #define WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT BIT(0) #define WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR BIT(1) #define WLAN_EID_CHAN_SWITCH_PARAM_REASON BIT(2) /** * struct ieee80211_rann_ie - RANN (root announcement) element * @rann_flags: Flags * @rann_hopcount: Hop Count * @rann_ttl: Element TTL * @rann_addr: Root Mesh STA Address * @rann_seq: HWMP Sequence Number * @rann_interval: Interval * @rann_metric: Metric * * This structure represents the payload of the "RANN element" as * described in IEEE Std 802.11-2020 section 9.4.2.111. */ struct ieee80211_rann_ie { u8 rann_flags; u8 rann_hopcount; u8 rann_ttl; u8 rann_addr[ETH_ALEN]; __le32 rann_seq; __le32 rann_interval; __le32 rann_metric; } __packed; enum ieee80211_rann_flags { RANN_FLAG_IS_GATE = 1 << 0, }; /* Mesh action codes */ enum ieee80211_mesh_actioncode { WLAN_MESH_ACTION_LINK_METRIC_REPORT, WLAN_MESH_ACTION_HWMP_PATH_SELECTION, WLAN_MESH_ACTION_GATE_ANNOUNCEMENT, WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION, WLAN_MESH_ACTION_MCCA_SETUP_REQUEST, WLAN_MESH_ACTION_MCCA_SETUP_REPLY, WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST, WLAN_MESH_ACTION_MCCA_ADVERTISEMENT, WLAN_MESH_ACTION_MCCA_TEARDOWN, WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST, WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE, }; /** * enum ieee80211_mesh_sync_method - mesh synchronization method identifier * * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method * that will be specified in a vendor specific information element */ enum ieee80211_mesh_sync_method { IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1, IEEE80211_SYNC_METHOD_VENDOR = 255, }; /** * enum ieee80211_mesh_path_protocol - mesh path selection protocol identifier * * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will * be specified in a vendor specific information element */ enum ieee80211_mesh_path_protocol { IEEE80211_PATH_PROTOCOL_HWMP = 1, IEEE80211_PATH_PROTOCOL_VENDOR = 255, }; /** * enum ieee80211_mesh_path_metric - mesh path selection metric identifier * * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be * specified in a vendor specific information element */ enum ieee80211_mesh_path_metric { IEEE80211_PATH_METRIC_AIRTIME = 1, IEEE80211_PATH_METRIC_VENDOR = 255, }; /** * enum ieee80211_root_mode_identifier - root mesh STA mode identifier * * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode * * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default) * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than * this value * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports * the proactive PREQ with proactive PREP subfield set to 0 * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA * supports the proactive PREQ with proactive PREP subfield set to 1 * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports * the proactive RANN */ enum ieee80211_root_mode_identifier { IEEE80211_ROOTMODE_NO_ROOT = 0, IEEE80211_ROOTMODE_ROOT = 1, IEEE80211_PROACTIVE_PREQ_NO_PREP = 2, IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3, IEEE80211_PROACTIVE_RANN = 4, }; #endif /* LINUX_IEEE80211_MESH_H */
