| Jiri Benc | f0706e8 | 2007-05-05 11:45:53 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2002-2005, Devicescape Software, Inc. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | */ |
| 8 | |
| 9 | #ifndef STA_INFO_H |
| 10 | #define STA_INFO_H |
| 11 | |
| 12 | #include <linux/list.h> |
| 13 | #include <linux/types.h> |
| 14 | #include <linux/if_ether.h> |
| 15 | #include <linux/kref.h> |
| 16 | #include "ieee80211_key.h" |
| 17 | |
| 18 | /* Stations flags (struct sta_info::flags) */ |
| 19 | #define WLAN_STA_AUTH BIT(0) |
| 20 | #define WLAN_STA_ASSOC BIT(1) |
| 21 | #define WLAN_STA_PS BIT(2) |
| 22 | #define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */ |
| 23 | #define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */ |
| 24 | #define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is |
| 25 | * controlling whether STA is authorized to |
| 26 | * send and receive non-IEEE 802.1X frames |
| 27 | */ |
| 28 | #define WLAN_STA_SHORT_PREAMBLE BIT(7) |
| 29 | #define WLAN_STA_WME BIT(9) |
| 30 | #define WLAN_STA_WDS BIT(27) |
| 31 | |
| 32 | |
| 33 | struct sta_info { |
| 34 | struct kref kref; |
| 35 | struct list_head list; |
| 36 | struct sta_info *hnext; /* next entry in hash table list */ |
| 37 | |
| 38 | struct ieee80211_local *local; |
| 39 | |
| 40 | u8 addr[ETH_ALEN]; |
| 41 | u16 aid; /* STA's unique AID (1..2007), 0 = not yet assigned */ |
| 42 | u32 flags; /* WLAN_STA_ */ |
| 43 | |
| 44 | struct sk_buff_head ps_tx_buf; /* buffer of TX frames for station in |
| 45 | * power saving state */ |
| 46 | int pspoll; /* whether STA has send a PS Poll frame */ |
| 47 | struct sk_buff_head tx_filtered; /* buffer of TX frames that were |
| 48 | * already given to low-level driver, |
| 49 | * but were filtered */ |
| 50 | int clear_dst_mask; |
| 51 | |
| 52 | unsigned long rx_packets, tx_packets; /* number of RX/TX MSDUs */ |
| 53 | unsigned long rx_bytes, tx_bytes; |
| 54 | unsigned long tx_retry_failed, tx_retry_count; |
| 55 | unsigned long tx_filtered_count; |
| 56 | |
| 57 | unsigned int wep_weak_iv_count; /* number of RX frames with weak IV */ |
| 58 | |
| 59 | unsigned long last_rx; |
| 60 | u32 supp_rates; /* bitmap of supported rates in local->curr_rates */ |
| 61 | int txrate; /* index in local->curr_rates */ |
| 62 | int last_txrate; /* last rate used to send a frame to this STA */ |
| 63 | int last_nonerp_idx; |
| 64 | |
| 65 | struct net_device *dev; /* which net device is this station associated |
| 66 | * to */ |
| 67 | |
| 68 | struct ieee80211_key *key; |
| 69 | |
| 70 | u32 tx_num_consecutive_failures; |
| 71 | u32 tx_num_mpdu_ok; |
| 72 | u32 tx_num_mpdu_fail; |
| 73 | |
| 74 | struct rate_control_ref *rate_ctrl; |
| 75 | void *rate_ctrl_priv; |
| 76 | |
| 77 | /* last received seq/frag number from this STA (per RX queue) */ |
| 78 | __le16 last_seq_ctrl[NUM_RX_DATA_QUEUES]; |
| 79 | unsigned long num_duplicates; /* number of duplicate frames received |
| 80 | * from this STA */ |
| 81 | unsigned long tx_fragments; /* number of transmitted MPDUs */ |
| 82 | unsigned long rx_fragments; /* number of received MPDUs */ |
| 83 | unsigned long rx_dropped; /* number of dropped MPDUs from this STA */ |
| 84 | |
| 85 | int last_rssi; /* RSSI of last received frame from this STA */ |
| 86 | int last_signal; /* signal of last received frame from this STA */ |
| 87 | int last_noise; /* noise of last received frame from this STA */ |
| 88 | int last_ack_rssi[3]; /* RSSI of last received ACKs from this STA */ |
| 89 | unsigned long last_ack; |
| 90 | int channel_use; |
| 91 | int channel_use_raw; |
| 92 | |
| 93 | u8 antenna_sel_tx; |
| 94 | u8 antenna_sel_rx; |
| 95 | |
| 96 | |
| 97 | int key_idx_compression; /* key table index for compression and TX |
| 98 | * filtering; used only if sta->key is not |
| 99 | * set */ |
| 100 | |
| 101 | int assoc_ap; /* whether this is an AP that we are |
| 102 | * associated with as a client */ |
| 103 | |
| 104 | #ifdef CONFIG_MAC80211_DEBUG_COUNTERS |
| 105 | unsigned int wme_rx_queue[NUM_RX_DATA_QUEUES]; |
| 106 | unsigned int wme_tx_queue[NUM_RX_DATA_QUEUES]; |
| 107 | #endif /* CONFIG_MAC80211_DEBUG_COUNTERS */ |
| 108 | |
| 109 | int vlan_id; |
| 110 | |
| 111 | u16 listen_interval; |
| 112 | }; |
| 113 | |
| 114 | |
| 115 | /* Maximum number of concurrently registered stations */ |
| 116 | #define MAX_STA_COUNT 2007 |
| 117 | |
| 118 | #define STA_HASH_SIZE 256 |
| 119 | #define STA_HASH(sta) (sta[5]) |
| 120 | |
| 121 | |
| 122 | /* Maximum number of frames to buffer per power saving station */ |
| 123 | #define STA_MAX_TX_BUFFER 128 |
| 124 | |
| 125 | /* Minimum buffered frame expiry time. If STA uses listen interval that is |
| 126 | * smaller than this value, the minimum value here is used instead. */ |
| 127 | #define STA_TX_BUFFER_EXPIRE (10 * HZ) |
| 128 | |
| 129 | /* How often station data is cleaned up (e.g., expiration of buffered frames) |
| 130 | */ |
| 131 | #define STA_INFO_CLEANUP_INTERVAL (10 * HZ) |
| 132 | |
| 133 | struct sta_info * sta_info_get(struct ieee80211_local *local, u8 *addr); |
| 134 | int sta_info_min_txrate_get(struct ieee80211_local *local); |
| 135 | void sta_info_put(struct sta_info *sta); |
| 136 | struct sta_info * sta_info_add(struct ieee80211_local *local, |
| 137 | struct net_device *dev, u8 *addr, gfp_t gfp); |
| 138 | void sta_info_free(struct sta_info *sta, int locked); |
| 139 | void sta_info_init(struct ieee80211_local *local); |
| 140 | int sta_info_start(struct ieee80211_local *local); |
| 141 | void sta_info_stop(struct ieee80211_local *local); |
| 142 | void sta_info_remove_aid_ptr(struct sta_info *sta); |
| 143 | void sta_info_flush(struct ieee80211_local *local, struct net_device *dev); |
| 144 | |
| 145 | #endif /* STA_INFO_H */ |