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linux/drivers/net/wireless/p54/p54.h
Christian Lamparter be8d98eab8 p54: implement multicast filter 
"For best CPU usage and power consumption, having as few
frames as possible percolate through the stack is
desirable. Hence, the hardware should filter as much
as possible."

Note: Not all firmwares include the multicast filter
feature and the stack does not filter them either.
The ARP filter on the other hand was dropped from the
patch since it does not work correctly:

Quote from: Max Filippov <jcmvbkbc@gmail.com>
<http://www.spinics.net/lists/linux-wireless/msg67466.html>
"In the ARP case, when there's no other traffic on p54spi,
all ARP requests are dropped. But if there's some egress
traffic from p54spi, filter seems to work correctly:
only ARP requests that match filter pass through.

In the multicast case filter seems to work correctly, but
it treats broadcast as subject to that filtering too. By
default only 01:00:5e:00:00:01 gets into priv->mc_maclist,
so we miss all broadcasts.

These two filters seem to interfere:
- if we set ARP filter and multicast filter without bc
	=>  we miss all ARPs if there's no egress traffic;
- if we set ARP filter and multicast filter with bc or
	don't set mc filter at all => we get all ARPs.

This effect does not depend on filter setup order."

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-04-26 15:50:30 -04:00

263 lines
5.8 KiB
C
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/*
* Shared defines for all mac80211 Prism54 code
*
* Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
*
* Based on the islsm (softmac prism54) driver, which is:
* Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef P54_H
#define P54_H
#ifdef CONFIG_P54_LEDS
#include <linux/leds.h>
#endif /* CONFIG_P54_LEDS */
#define ISL38XX_DEV_FIRMWARE_ADDR 0x20000
#define BR_CODE_MIN 0x80000000
#define BR_CODE_COMPONENT_ID 0x80000001
#define BR_CODE_COMPONENT_VERSION 0x80000002
#define BR_CODE_DEPENDENT_IF 0x80000003
#define BR_CODE_EXPOSED_IF 0x80000004
#define BR_CODE_DESCR 0x80000101
#define BR_CODE_MAX 0x8FFFFFFF
#define BR_CODE_END_OF_BRA 0xFF0000FF
#define LEGACY_BR_CODE_END_OF_BRA 0xFFFFFFFF
struct bootrec {
__le32 code;
__le32 len;
u32 data[10];
} __packed;
/* Interface role definitions */
#define BR_INTERFACE_ROLE_SERVER 0x0000
#define BR_INTERFACE_ROLE_CLIENT 0x8000
#define BR_DESC_PRIV_CAP_WEP BIT(0)
#define BR_DESC_PRIV_CAP_TKIP BIT(1)
#define BR_DESC_PRIV_CAP_MICHAEL BIT(2)
#define BR_DESC_PRIV_CAP_CCX_CP BIT(3)
#define BR_DESC_PRIV_CAP_CCX_MIC BIT(4)
#define BR_DESC_PRIV_CAP_AESCCMP BIT(5)
struct bootrec_desc {
__le16 modes;
__le16 flags;
__le32 rx_start;
__le32 rx_end;
u8 headroom;
u8 tailroom;
u8 tx_queues;
u8 tx_depth;
u8 privacy_caps;
u8 rx_keycache_size;
u8 time_size;
u8 padding;
u8 rates[16];
u8 padding2[4];
__le16 rx_mtu;
} __packed;
#define FW_FMAC 0x464d4143
#define FW_LM86 0x4c4d3836
#define FW_LM87 0x4c4d3837
#define FW_LM20 0x4c4d3230
struct bootrec_comp_id {
__le32 fw_variant;
} __packed;
struct bootrec_comp_ver {
char fw_version[24];
} __packed;
struct bootrec_end {
__le16 crc;
u8 padding[2];
u8 md5[16];
} __packed;
/* provide 16 bytes for the transport back-end */
#define P54_TX_INFO_DATA_SIZE 16
/* stored in ieee80211_tx_info's rate_driver_data */
struct p54_tx_info {
u32 start_addr;
u32 end_addr;
union {
void *data[P54_TX_INFO_DATA_SIZE / sizeof(void *)];
struct {
u32 extra_len;
};
};
};
#define P54_MAX_CTRL_FRAME_LEN 0x1000
#define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop) \
do { \
queue.aifs = cpu_to_le16(ai_fs); \
queue.cwmin = cpu_to_le16(cw_min); \
queue.cwmax = cpu_to_le16(cw_max); \
queue.txop = cpu_to_le16(_txop); \
} while (0)
struct p54_edcf_queue_param {
__le16 aifs;
__le16 cwmin;
__le16 cwmax;
__le16 txop;
} __packed;
struct p54_rssi_db_entry {
u16 freq;
s16 mul;
s16 add;
s16 longbow_unkn;
s16 longbow_unk2;
};
struct p54_cal_database {
size_t entries;
size_t entry_size;
size_t offset;
size_t len;
u8 data[0];
};
#define EEPROM_READBACK_LEN 0x3fc
enum fw_state {
FW_STATE_OFF,
FW_STATE_BOOTING,
FW_STATE_READY,
FW_STATE_RESET,
FW_STATE_RESETTING,
};
#ifdef CONFIG_P54_LEDS
#define P54_LED_MAX_NAME_LEN 31
struct p54_led_dev {
struct ieee80211_hw *hw_dev;
struct led_classdev led_dev;
char name[P54_LED_MAX_NAME_LEN + 1];
unsigned int toggled;
unsigned int index;
unsigned int registered;
};
#endif /* CONFIG_P54_LEDS */
struct p54_tx_queue_stats {
unsigned int len;
unsigned int limit;
unsigned int count;
};
struct p54_common {
struct ieee80211_hw *hw;
struct ieee80211_vif *vif;
void (*tx)(struct ieee80211_hw *dev, struct sk_buff *skb);
int (*open)(struct ieee80211_hw *dev);
void (*stop)(struct ieee80211_hw *dev);
struct sk_buff_head tx_pending;
struct sk_buff_head tx_queue;
struct mutex conf_mutex;
/* memory management (as seen by the firmware) */
u32 rx_start;
u32 rx_end;
u16 rx_mtu;
u8 headroom;
u8 tailroom;
/* firmware/hardware info */
unsigned int tx_hdr_len;
unsigned int fw_var;
unsigned int fw_interface;
u8 version;
/* (e)DCF / QOS state */
bool use_short_slot;
spinlock_t tx_stats_lock;
struct p54_tx_queue_stats tx_stats[8];
struct p54_edcf_queue_param qos_params[8];
/* Radio data */
u16 rxhw;
u8 rx_diversity_mask;
u8 tx_diversity_mask;
unsigned int output_power;
struct p54_rssi_db_entry *cur_rssi;
int noise;
/* calibration, output power limit and rssi<->dBm conversation data */
struct pda_iq_autocal_entry *iq_autocal;
unsigned int iq_autocal_len;
struct p54_cal_database *curve_data;
struct p54_cal_database *output_limit;
struct p54_cal_database *rssi_db;
struct ieee80211_supported_band *band_table[IEEE80211_NUM_BANDS];
/* BBP/MAC state */
u8 mac_addr[ETH_ALEN];
u8 bssid[ETH_ALEN];
u8 mc_maclist[4][ETH_ALEN];
u16 wakeup_timer;
unsigned int filter_flags;
int mc_maclist_num;
int mode;
u32 tsf_low32, tsf_high32;
u32 basic_rate_mask;
u16 aid;
u8 coverage_class;
bool powersave_override;
__le32 beacon_req_id;
struct completion beacon_comp;
/* cryptographic engine information */
u8 privacy_caps;
u8 rx_keycache_size;
unsigned long *used_rxkeys;
/* LED management */
#ifdef CONFIG_P54_LEDS
struct p54_led_dev leds[4];
struct delayed_work led_work;
#endif /* CONFIG_P54_LEDS */
u16 softled_state; /* bit field of glowing LEDs */
/* statistics */
struct ieee80211_low_level_stats stats;
struct delayed_work work;
/* eeprom handling */
void *eeprom;
struct completion eeprom_comp;
struct mutex eeprom_mutex;
};
/* interfaces for the drivers */
int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb);
void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb);
int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw);
int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len);
int p54_read_eeprom(struct ieee80211_hw *dev);
struct ieee80211_hw *p54_init_common(size_t priv_data_len);
int p54_register_common(struct ieee80211_hw *dev, struct device *pdev);
void p54_free_common(struct ieee80211_hw *dev);
void p54_unregister_common(struct ieee80211_hw *dev);
#endif /* P54_H */
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