diff options
Diffstat (limited to 'include/net/ieee80211softmac.h')
| -rw-r--r-- | include/net/ieee80211softmac.h | 60 |
1 files changed, 54 insertions, 6 deletions
diff --git a/include/net/ieee80211softmac.h b/include/net/ieee80211softmac.h index 00ad810eb88..425b3a57ac7 100644 --- a/include/net/ieee80211softmac.h +++ b/include/net/ieee80211softmac.h @@ -86,9 +86,6 @@ struct ieee80211softmac_assoc_info { /* BSSID we're trying to associate to */ char bssid[ETH_ALEN]; - - /* Rates supported by the network */ - struct ieee80211softmac_ratesinfo supported_rates; /* some flags. * static_essid is valid if the essid is constant, @@ -103,6 +100,7 @@ struct ieee80211softmac_assoc_info { * bssfixed is used for SIOCSIWAP. */ u8 static_essid:1, + short_preamble_available:1, associating:1, assoc_wait:1, bssvalid:1, @@ -115,6 +113,19 @@ struct ieee80211softmac_assoc_info { struct work_struct timeout; }; +struct ieee80211softmac_bss_info { + /* Rates supported by the network */ + struct ieee80211softmac_ratesinfo supported_rates; + + /* This indicates whether frames can currently be transmitted with + * short preamble (only use this variable during TX at CCK rates) */ + u8 short_preamble:1; + + /* This indicates whether protection (e.g. self-CTS) should be used + * when transmitting with OFDM modulation */ + u8 use_protection:1; +}; + enum { IEEE80211SOFTMAC_AUTH_OPEN_REQUEST = 1, IEEE80211SOFTMAC_AUTH_OPEN_RESPONSE = 2, @@ -157,6 +168,10 @@ struct ieee80211softmac_txrates { #define IEEE80211SOFTMAC_TXRATECHG_MCAST (1 << 2) /* mcast_rate */ #define IEEE80211SOFTMAC_TXRATECHG_MGT_MCAST (1 << 3) /* mgt_mcast_rate */ +#define IEEE80211SOFTMAC_BSSINFOCHG_RATES (1 << 0) /* supported_rates */ +#define IEEE80211SOFTMAC_BSSINFOCHG_SHORT_PREAMBLE (1 << 1) /* short_preamble */ +#define IEEE80211SOFTMAC_BSSINFOCHG_PROTECTION (1 << 2) /* use_protection */ + struct ieee80211softmac_device { /* 802.11 structure for data stuff */ struct ieee80211_device *ieee; @@ -200,10 +215,16 @@ struct ieee80211softmac_device { * The driver just needs to read them. */ struct ieee80211softmac_txrates txrates; - /* If the driver needs to do stuff on TX rate changes, assign this callback. */ + + /* If the driver needs to do stuff on TX rate changes, assign this + * callback. See IEEE80211SOFTMAC_TXRATECHG for change flags. */ void (*txrates_change)(struct net_device *dev, - u32 changes, /* see IEEE80211SOFTMAC_TXRATECHG flags */ - const struct ieee80211softmac_txrates *rates_before_change); + u32 changes); + + /* If the driver needs to do stuff when BSS properties change, assign + * this callback. see IEEE80211SOFTMAC_BSSINFOCHG for change flags. */ + void (*bssinfo_change)(struct net_device *dev, + u32 changes); /* private stuff follows */ /* this lock protects this structure */ @@ -216,6 +237,7 @@ struct ieee80211softmac_device { struct ieee80211softmac_scaninfo *scaninfo; struct ieee80211softmac_assoc_info associnfo; + struct ieee80211softmac_bss_info bssinfo; struct list_head auth_queue; struct list_head events; @@ -257,6 +279,14 @@ extern void ieee80211softmac_fragment_lost(struct net_device *dev, * Note that the rates need to be sorted. */ extern void ieee80211softmac_set_rates(struct net_device *dev, u8 count, u8 *rates); +/* Finds the highest rate which is: + * 1. Present in ri (optionally a basic rate) + * 2. Supported by the device + * 3. Less than or equal to the user-defined rate + */ +extern u8 ieee80211softmac_highest_supported_rate(struct ieee80211softmac_device *mac, + struct ieee80211softmac_ratesinfo *ri, int basic_only); + /* Helper function which advises you the rate at which a frame should be * transmitted at. */ static inline u8 ieee80211softmac_suggest_txrate(struct ieee80211softmac_device *mac, @@ -279,6 +309,24 @@ static inline u8 ieee80211softmac_suggest_txrate(struct ieee80211softmac_device return txrates->mcast_rate; } +/* Helper function which advises you when it is safe to transmit with short + * preamble. + * You should only call this function when transmitting at CCK rates. */ +static inline int ieee80211softmac_short_preamble_ok(struct ieee80211softmac_device *mac, + int is_multicast, + int is_mgt) +{ + return (is_multicast && is_mgt) ? 0 : mac->bssinfo.short_preamble; +} + +/* Helper function which advises you whether protection (e.g. self-CTS) is + * needed. 1 = protection needed, 0 = no protection needed + * Only use this function when transmitting with OFDM modulation. */ +static inline int ieee80211softmac_protection_needed(struct ieee80211softmac_device *mac) +{ + return mac->bssinfo.use_protection; +} + /* Start the SoftMAC. Call this after you initialized the device * and it is ready to run. */ |