提交 74079fdc 编写于 作者: J James Ketrenos 提交者: Jeff Garzik

[PATCH] ieee80211 Added wireless spy support

Added wireless spy support to Rx code path.
Signed-off-by: NJames Ketrenos <jketreno@linux.intel.com>

NOTE:  Looks like scripts/Lindent generated output different
than the Lindented version already in-kernel, hence all the
whitespace deltas...  *sigh*
Signed-off-by: NJeff Garzik <jgarzik@pobox.com>
上级 b1b508e1
......@@ -20,8 +20,8 @@
*/
#ifndef IEEE80211_H
#define IEEE80211_H
#include <linux/if_ether.h> /* ETH_ALEN */
#include <linux/kernel.h> /* ARRAY_SIZE */
#include <linux/if_ether.h> /* ETH_ALEN */
#include <linux/kernel.h> /* ARRAY_SIZE */
#include <linux/wireless.h>
#define IEEE80211_DATA_LEN 2304
......@@ -33,7 +33,6 @@
represents the 2304 bytes of real data, plus a possible 8 bytes of
WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
#define IEEE80211_HLEN 30
#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
......@@ -117,7 +116,6 @@ struct ieee80211_hdr_3addr {
#define IEEE80211_SCTL_FRAG 0x000F
#define IEEE80211_SCTL_SEQ 0xFFF0
/* debug macros */
#ifdef CONFIG_IEEE80211_DEBUG
......@@ -128,8 +126,7 @@ do { if (ieee80211_debug_level & (level)) \
in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
#else
#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
#endif /* CONFIG_IEEE80211_DEBUG */
#endif /* CONFIG_IEEE80211_DEBUG */
/* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
......@@ -140,7 +137,6 @@ do { if (ieee80211_debug_level & (level)) \
* messages. It should never be used for passing essid to user space. */
const char *escape_essid(const char *essid, u8 essid_len);
/*
* To use the debug system:
*
......@@ -192,7 +188,7 @@ const char *escape_essid(const char *essid, u8 essid_len);
#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
#include <linux/netdevice.h>
#include <linux/wireless.h>
#include <linux/if_arp.h> /* ARPHRD_ETHER */
#include <linux/if_arp.h> /* ARPHRD_ETHER */
#ifndef WIRELESS_SPY
#define WIRELESS_SPY /* enable iwspy support */
......@@ -200,10 +196,10 @@ const char *escape_essid(const char *essid, u8 essid_len);
#include <net/iw_handler.h> /* new driver API */
#ifndef ETH_P_PAE
#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
#endif /* ETH_P_PAE */
#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
#endif /* ETH_P_PAE */
#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
#ifndef ETH_P_80211_RAW
#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
......@@ -215,10 +211,10 @@ const char *escape_essid(const char *essid, u8 essid_len);
struct ieee80211_snap_hdr {
u8 dsap; /* always 0xAA */
u8 ssap; /* always 0xAA */
u8 ctrl; /* always 0x03 */
u8 oui[P80211_OUI_LEN]; /* organizational universal id */
u8 dsap; /* always 0xAA */
u8 ssap; /* always 0xAA */
u8 ctrl; /* always 0x03 */
u8 oui[P80211_OUI_LEN]; /* organizational universal id */
} __attribute__ ((packed));
......@@ -312,14 +308,12 @@ enum ieee80211_reasoncode {
WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
};
#define IEEE80211_STATMASK_SIGNAL (1<<0)
#define IEEE80211_STATMASK_RSSI (1<<1)
#define IEEE80211_STATMASK_NOISE (1<<2)
#define IEEE80211_STATMASK_RATE (1<<3)
#define IEEE80211_STATMASK_WEMASK 0x7
#define IEEE80211_CCK_MODULATION (1<<0)
#define IEEE80211_OFDM_MODULATION (1<<1)
......@@ -377,9 +371,6 @@ enum ieee80211_reasoncode {
#define IEEE80211_NUM_CCK_RATES 4
#define IEEE80211_OFDM_SHIFT_MASK_A 4
/* NOTE: This data is for statistical purposes; not all hardware provides this
* information for frames received. Not setting these will not cause
* any adverse affects. */
......@@ -388,7 +379,7 @@ struct ieee80211_rx_stats {
s8 rssi;
u8 signal;
u8 noise;
u16 rate; /* in 100 kbps */
u16 rate; /* in 100 kbps */
u8 received_channel;
u8 control;
u8 mask;
......@@ -449,28 +440,24 @@ struct ieee80211_device;
#define SEC_LEVEL (1<<7)
#define SEC_ENABLED (1<<8)
#define SEC_LEVEL_0 0 /* None */
#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
#define SEC_LEVEL_0 0 /* None */
#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
#define WEP_KEYS 4
#define WEP_KEY_LEN 13
struct ieee80211_security {
u16 active_key:2,
enabled:1,
auth_mode:2,
auth_algo:4,
unicast_uses_group:1;
enabled:1, auth_mode:2, auth_algo:4, unicast_uses_group:1;
u8 key_sizes[WEP_KEYS];
u8 keys[WEP_KEYS][WEP_KEY_LEN];
u8 level;
u16 flags;
} __attribute__ ((packed));
/*
802.11 data frame from AP
......@@ -494,7 +481,7 @@ enum ieee80211_mfie {
MFIE_TYPE_RATES = 1,
MFIE_TYPE_FH_SET = 2,
MFIE_TYPE_DS_SET = 3,
MFIE_TYPE_CF_SET = 4,
MFIE_TYPE_CF_SET = 4,
MFIE_TYPE_TIM = 5,
MFIE_TYPE_IBSS_SET = 6,
MFIE_TYPE_COUNTRY = 7,
......@@ -554,7 +541,6 @@ struct ieee80211_authentication {
struct ieee80211_info_element info_element;
} __attribute__ ((packed));
struct ieee80211_probe_response {
struct ieee80211_hdr_3addr header;
u32 time_stamp[2];
......@@ -575,10 +561,9 @@ struct ieee80211_assoc_response_frame {
__le16 capability;
__le16 status;
__le16 aid;
struct ieee80211_info_element info_element; /* supported rates */
struct ieee80211_info_element info_element; /* supported rates */
} __attribute__ ((packed));
struct ieee80211_txb {
u8 nr_frags;
u8 encrypted;
......@@ -588,7 +573,6 @@ struct ieee80211_txb {
struct sk_buff *fragments[0];
};
/* SWEEP TABLE ENTRIES NUMBER */
#define MAX_SWEEP_TAB_ENTRIES 42
#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
......@@ -651,7 +635,6 @@ enum ieee80211_state {
#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
#define DEFAULT_FTS 2346
#define CFG_IEEE80211_RESERVE_FCS (1<<0)
#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
......@@ -669,24 +652,25 @@ struct ieee80211_device {
int scans;
int scan_age;
int iw_mode; /* operating mode (IW_MODE_*) */
int iw_mode; /* operating mode (IW_MODE_*) */
struct iw_spy_data spy_data; /* iwspy support */
spinlock_t lock;
int tx_headroom; /* Set to size of any additional room needed at front
* of allocated Tx SKBs */
int tx_headroom; /* Set to size of any additional room needed at front
* of allocated Tx SKBs */
u32 config;
/* WEP and other encryption related settings at the device level */
int open_wep; /* Set to 1 to allow unencrypted frames */
int open_wep; /* Set to 1 to allow unencrypted frames */
int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
* WEP key changes */
/* If the host performs {en,de}cryption, then set to 1 */
int host_encrypt;
int host_decrypt;
int ieee802_1x; /* is IEEE 802.1X used */
int ieee802_1x; /* is IEEE 802.1X used */
/* WPA data */
int wpa_enabled;
......@@ -698,36 +682,36 @@ struct ieee80211_device {
struct list_head crypt_deinit_list;
struct ieee80211_crypt_data *crypt[WEP_KEYS];
int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
struct timer_list crypt_deinit_timer;
int bcrx_sta_key; /* use individual keys to override default keys even
* with RX of broad/multicast frames */
int bcrx_sta_key; /* use individual keys to override default keys even
* with RX of broad/multicast frames */
/* Fragmentation structures */
struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
unsigned int frag_next_idx;
u16 fts; /* Fragmentation Threshold */
u16 fts; /* Fragmentation Threshold */
/* Association info */
u8 bssid[ETH_ALEN];
enum ieee80211_state state;
int mode; /* A, B, G */
int modulation; /* CCK, OFDM */
int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
int abg_ture; /* ABG flag */
int mode; /* A, B, G */
int modulation; /* CCK, OFDM */
int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
int abg_ture; /* ABG flag */
int perfect_rssi;
int worst_rssi;
/* Callback functions */
void (*set_security)(struct net_device *dev,
struct ieee80211_security *sec);
int (*hard_start_xmit)(struct ieee80211_txb *txb,
struct net_device *dev);
int (*reset_port)(struct net_device *dev);
void (*set_security) (struct net_device * dev,
struct ieee80211_security * sec);
int (*hard_start_xmit) (struct ieee80211_txb * txb,
struct net_device * dev);
int (*reset_port) (struct net_device * dev);
/* This must be the last item so that it points to the data
* allocated beyond this structure by alloc_ieee80211 */
......@@ -760,7 +744,8 @@ extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
return 1;
}
extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mode)
extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
int mode)
{
/*
* It is possible for both access points and our device to support
......@@ -811,8 +796,6 @@ extern inline int ieee80211_get_hdrlen(u16 fc)
return hdrlen;
}
/* ieee80211.c */
extern void free_ieee80211(struct net_device *dev);
extern struct net_device *alloc_ieee80211(int sizeof_priv);
......@@ -820,11 +803,9 @@ extern struct net_device *alloc_ieee80211(int sizeof_priv);
extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
/* ieee80211_tx.c */
extern int ieee80211_xmit(struct sk_buff *skb,
struct net_device *dev);
extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
extern void ieee80211_txb_free(struct ieee80211_txb *);
/* ieee80211_rx.c */
extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
struct ieee80211_rx_stats *rx_stats);
......@@ -843,7 +824,6 @@ extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *key);
extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
{
ieee->scans++;
......@@ -854,5 +834,4 @@ extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
return ieee->scans;
}
#endif /* IEEE80211_H */
#endif /* IEEE80211_H */
......@@ -31,10 +31,10 @@ struct ieee80211_crypto_ops {
/* init new crypto context (e.g., allocate private data space,
* select IV, etc.); returns NULL on failure or pointer to allocated
* private data on success */
void * (*init)(int keyidx);
void *(*init) (int keyidx);
/* deinitialize crypto context and free allocated private data */
void (*deinit)(void *priv);
void (*deinit) (void *priv);
/* encrypt/decrypt return < 0 on error or >= 0 on success. The return
* value from decrypt_mpdu is passed as the keyidx value for
......@@ -42,21 +42,21 @@ struct ieee80211_crypto_ops {
* encryption; if not, error will be returned; these functions are
* called for all MPDUs (i.e., fragments).
*/
int (*encrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
int (*decrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
int (*encrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
int (*decrypt_mpdu) (struct sk_buff * skb, int hdr_len, void *priv);
/* These functions are called for full MSDUs, i.e. full frames.
* These can be NULL if full MSDU operations are not needed. */
int (*encrypt_msdu)(struct sk_buff *skb, int hdr_len, void *priv);
int (*decrypt_msdu)(struct sk_buff *skb, int keyidx, int hdr_len,
void *priv);
int (*encrypt_msdu) (struct sk_buff * skb, int hdr_len, void *priv);
int (*decrypt_msdu) (struct sk_buff * skb, int keyidx, int hdr_len,
void *priv);
int (*set_key)(void *key, int len, u8 *seq, void *priv);
int (*get_key)(void *key, int len, u8 *seq, void *priv);
int (*set_key) (void *key, int len, u8 * seq, void *priv);
int (*get_key) (void *key, int len, u8 * seq, void *priv);
/* procfs handler for printing out key information and possible
* statistics */
char * (*print_stats)(char *p, void *priv);
char *(*print_stats) (char *p, void *priv);
/* maximum number of bytes added by encryption; encrypt buf is
* allocated with extra_prefix_len bytes, copy of in_buf, and
......@@ -69,7 +69,7 @@ struct ieee80211_crypto_ops {
};
struct ieee80211_crypt_data {
struct list_head list; /* delayed deletion list */
struct list_head list; /* delayed deletion list */
struct ieee80211_crypto_ops *ops;
void *priv;
atomic_t refcnt;
......@@ -77,7 +77,7 @@ struct ieee80211_crypt_data {
int ieee80211_register_crypto_ops(struct ieee80211_crypto_ops *ops);
int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops);
struct ieee80211_crypto_ops * ieee80211_get_crypto_ops(const char *name);
struct ieee80211_crypto_ops *ieee80211_get_crypto_ops(const char *name);
void ieee80211_crypt_deinit_entries(struct ieee80211_device *, int);
void ieee80211_crypt_deinit_handler(unsigned long);
void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,
......
......@@ -191,18 +191,18 @@ static void ieee80211_crypt_null_deinit(void *priv)
}
static struct ieee80211_crypto_ops ieee80211_crypt_null = {
.name = "NULL",
.init = ieee80211_crypt_null_init,
.deinit = ieee80211_crypt_null_deinit,
.encrypt_mpdu = NULL,
.decrypt_mpdu = NULL,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = NULL,
.get_key = NULL,
.extra_prefix_len = 0,
.extra_postfix_len = 0,
.owner = THIS_MODULE,
.name = "NULL",
.init = ieee80211_crypt_null_init,
.deinit = ieee80211_crypt_null_deinit,
.encrypt_mpdu = NULL,
.decrypt_mpdu = NULL,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = NULL,
.get_key = NULL,
.extra_prefix_len = 0,
.extra_postfix_len = 0,
.owner = THIS_MODULE,
};
static int __init ieee80211_crypto_init(void)
......
......@@ -426,19 +426,19 @@ static char *ieee80211_ccmp_print_stats(char *p, void *priv)
}
static struct ieee80211_crypto_ops ieee80211_crypt_ccmp = {
.name = "CCMP",
.init = ieee80211_ccmp_init,
.deinit = ieee80211_ccmp_deinit,
.encrypt_mpdu = ieee80211_ccmp_encrypt,
.decrypt_mpdu = ieee80211_ccmp_decrypt,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = ieee80211_ccmp_set_key,
.get_key = ieee80211_ccmp_get_key,
.print_stats = ieee80211_ccmp_print_stats,
.extra_prefix_len = CCMP_HDR_LEN,
.extra_postfix_len = CCMP_MIC_LEN,
.owner = THIS_MODULE,
.name = "CCMP",
.init = ieee80211_ccmp_init,
.deinit = ieee80211_ccmp_deinit,
.encrypt_mpdu = ieee80211_ccmp_encrypt,
.decrypt_mpdu = ieee80211_ccmp_decrypt,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = ieee80211_ccmp_set_key,
.get_key = ieee80211_ccmp_get_key,
.print_stats = ieee80211_ccmp_print_stats,
.extra_prefix_len = CCMP_HDR_LEN,
.extra_postfix_len = CCMP_MIC_LEN,
.owner = THIS_MODULE,
};
static int __init ieee80211_crypto_ccmp_init(void)
......
......@@ -654,19 +654,19 @@ static char *ieee80211_tkip_print_stats(char *p, void *priv)
}
static struct ieee80211_crypto_ops ieee80211_crypt_tkip = {
.name = "TKIP",
.init = ieee80211_tkip_init,
.deinit = ieee80211_tkip_deinit,
.encrypt_mpdu = ieee80211_tkip_encrypt,
.decrypt_mpdu = ieee80211_tkip_decrypt,
.encrypt_msdu = ieee80211_michael_mic_add,
.decrypt_msdu = ieee80211_michael_mic_verify,
.set_key = ieee80211_tkip_set_key,
.get_key = ieee80211_tkip_get_key,
.print_stats = ieee80211_tkip_print_stats,
.extra_prefix_len = 4 + 4, /* IV + ExtIV */
.extra_postfix_len = 8 + 4, /* MIC + ICV */
.owner = THIS_MODULE,
.name = "TKIP",
.init = ieee80211_tkip_init,
.deinit = ieee80211_tkip_deinit,
.encrypt_mpdu = ieee80211_tkip_encrypt,
.decrypt_mpdu = ieee80211_tkip_decrypt,
.encrypt_msdu = ieee80211_michael_mic_add,
.decrypt_msdu = ieee80211_michael_mic_verify,
.set_key = ieee80211_tkip_set_key,
.get_key = ieee80211_tkip_get_key,
.print_stats = ieee80211_tkip_print_stats,
.extra_prefix_len = 4 + 4, /* IV + ExtIV */
.extra_postfix_len = 8 + 4, /* MIC + ICV */
.owner = THIS_MODULE,
};
static int __init ieee80211_crypto_tkip_init(void)
......
......@@ -229,19 +229,19 @@ static char *prism2_wep_print_stats(char *p, void *priv)
}
static struct ieee80211_crypto_ops ieee80211_crypt_wep = {
.name = "WEP",
.init = prism2_wep_init,
.deinit = prism2_wep_deinit,
.encrypt_mpdu = prism2_wep_encrypt,
.decrypt_mpdu = prism2_wep_decrypt,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = prism2_wep_set_key,
.get_key = prism2_wep_get_key,
.print_stats = prism2_wep_print_stats,
.extra_prefix_len = 4, /* IV */
.extra_postfix_len = 4, /* ICV */
.owner = THIS_MODULE,
.name = "WEP",
.init = prism2_wep_init,
.deinit = prism2_wep_deinit,
.encrypt_mpdu = prism2_wep_encrypt,
.decrypt_mpdu = prism2_wep_decrypt,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = prism2_wep_set_key,
.get_key = prism2_wep_get_key,
.print_stats = prism2_wep_print_stats,
.extra_prefix_len = 4, /* IV */
.extra_postfix_len = 4, /* ICV */
.owner = THIS_MODULE,
};
static int __init ieee80211_crypto_wep_init(void)
......
......@@ -378,33 +378,47 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
frag = WLAN_GET_SEQ_FRAG(sc);
hdrlen = ieee80211_get_hdrlen(fc);
#ifdef NOT_YET
#if WIRELESS_EXT > 15
/* Put this code here so that we avoid duplicating it in all
* Rx paths. - Jean II */
#ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
/* If spy monitoring on */
if (iface->spy_data.spy_number > 0) {
if (ieee->spy_data.spy_number > 0) {
struct iw_quality wstats;
wstats.level = rx_stats->signal;
wstats.noise = rx_stats->noise;
wstats.updated = 6; /* No qual value */
wstats.updated = 0;
if (rx_stats->mask & IEEE80211_STATMASK_RSSI) {
wstats.level = rx_stats->rssi;
wstats.updated |= IW_QUAL_LEVEL_UPDATED;
} else
wstats.updated |= IW_QUAL_LEVEL_INVALID;
if (rx_stats->mask & IEEE80211_STATMASK_NOISE) {
wstats.noise = rx_stats->noise;
wstats.updated |= IW_QUAL_NOISE_UPDATED;
} else
wstats.updated |= IW_QUAL_NOISE_INVALID;
if (rx_stats->mask & IEEE80211_STATMASK_SIGNAL) {
wstats.qual = rx_stats->signal;
wstats.updated |= IW_QUAL_QUAL_UPDATED;
} else
wstats.updated |= IW_QUAL_QUAL_INVALID;
/* Update spy records */
wireless_spy_update(dev, hdr->addr2, &wstats);
wireless_spy_update(ieee->dev, hdr->addr2, &wstats);
}
#endif /* IW_WIRELESS_SPY */
#endif /* WIRELESS_EXT > 15 */
#ifdef NOT_YET
hostap_update_rx_stats(local->ap, hdr, rx_stats);
#endif
#if WIRELESS_EXT > 15
if (ieee->iw_mode == IW_MODE_MONITOR) {
ieee80211_monitor_rx(ieee, skb, rx_stats);
stats->rx_packets++;
stats->rx_bytes += skb->len;
return 1;
}
#endif
if (ieee->host_decrypt) {
int idx = 0;
......@@ -771,8 +785,7 @@ static inline int ieee80211_is_ofdm_rate(u8 rate)
return 0;
}
static inline int ieee80211_network_init(struct ieee80211_device *ieee,
struct ieee80211_probe_response
static inline int ieee80211_network_init(struct ieee80211_device *ieee, struct ieee80211_probe_response
*beacon,
struct ieee80211_network *network,
struct ieee80211_rx_stats *stats)
......@@ -1028,11 +1041,9 @@ static inline void update_network(struct ieee80211_network *dst,
}
static inline void ieee80211_process_probe_response(struct ieee80211_device
*ieee,
struct
*ieee, struct
ieee80211_probe_response
*beacon,
struct ieee80211_rx_stats
*beacon, struct ieee80211_rx_stats
*stats)
{
struct ieee80211_network network;
......
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