diff options
Diffstat (limited to 'include/net/mac80211.h')
| -rw-r--r-- | include/net/mac80211.h | 171 |
1 files changed, 145 insertions, 26 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 2474019f47d3..ea2c8c36477c 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -20,6 +20,7 @@ #include <linux/device.h> #include <linux/ieee80211.h> #include <net/cfg80211.h> +#include <asm/unaligned.h> /** * DOC: Introduction @@ -193,6 +194,17 @@ enum ieee80211_bss_change { #define IEEE80211_BSS_ARP_ADDR_LIST_LEN 4 /** + * enum ieee80211_rssi_event - RSSI threshold event + * An indicator for when RSSI goes below/above a certain threshold. + * @RSSI_EVENT_HIGH: AP's rssi crossed the high threshold set by the driver. + * @RSSI_EVENT_LOW: AP's rssi crossed the low threshold set by the driver. + */ +enum ieee80211_rssi_event { + RSSI_EVENT_HIGH, + RSSI_EVENT_LOW, +}; + +/** * struct ieee80211_bss_conf - holds the BSS's changing parameters * * This structure keeps information about a BSS (and an association @@ -962,21 +974,6 @@ enum sta_notify_cmd { }; /** - * enum ieee80211_tkip_key_type - get tkip key - * - * Used by drivers which need to get a tkip key for skb. Some drivers need a - * phase 1 key, others need a phase 2 key. A single function allows the driver - * to get the key, this enum indicates what type of key is required. - * - * @IEEE80211_TKIP_P1_KEY: the driver needs a phase 1 key - * @IEEE80211_TKIP_P2_KEY: the driver needs a phase 2 key - */ -enum ieee80211_tkip_key_type { - IEEE80211_TKIP_P1_KEY, - IEEE80211_TKIP_P2_KEY, -}; - -/** * enum ieee80211_hw_flags - hardware flags * * These flags are used to indicate hardware capabilities to @@ -1881,6 +1878,8 @@ enum ieee80211_ampdu_mlme_action { * @set_bitrate_mask: Set a mask of rates to be used for rate control selection * when transmitting a frame. Currently only legacy rates are handled. * The callback can sleep. + * @rssi_callback: Notify driver when the average RSSI goes above/below + * thresholds that were registered previously. The callback can sleep. */ struct ieee80211_ops { void (*tx)(struct ieee80211_hw *hw, struct sk_buff *skb); @@ -1989,6 +1988,8 @@ struct ieee80211_ops { bool (*tx_frames_pending)(struct ieee80211_hw *hw); int (*set_bitrate_mask)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, const struct cfg80211_bitrate_mask *mask); + void (*rssi_callback)(struct ieee80211_hw *hw, + enum ieee80211_rssi_event rssi_event); }; /** @@ -2579,21 +2580,111 @@ struct sk_buff * ieee80211_get_buffered_bc(struct ieee80211_hw *hw, struct ieee80211_vif *vif); /** - * ieee80211_get_tkip_key - get a TKIP rc4 for skb + * ieee80211_get_tkip_p1k_iv - get a TKIP phase 1 key for IV32 + * + * This function returns the TKIP phase 1 key for the given IV32. + * + * @keyconf: the parameter passed with the set key + * @iv32: IV32 to get the P1K for + * @p1k: a buffer to which the key will be written, as 5 u16 values + */ +void ieee80211_get_tkip_p1k_iv(struct ieee80211_key_conf *keyconf, + u32 iv32, u16 *p1k); + +/** + * ieee80211_get_tkip_p1k - get a TKIP phase 1 key + * + * This function returns the TKIP phase 1 key for the IV32 taken + * from the given packet. + * + * @keyconf: the parameter passed with the set key + * @skb: the packet to take the IV32 value from that will be encrypted + * with this P1K + * @p1k: a buffer to which the key will be written, as 5 u16 values + */ +static inline void ieee80211_get_tkip_p1k(struct ieee80211_key_conf *keyconf, + struct sk_buff *skb, u16 *p1k) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + const u8 *data = (u8 *)hdr + ieee80211_hdrlen(hdr->frame_control); + u32 iv32 = get_unaligned_le32(&data[4]); + + ieee80211_get_tkip_p1k_iv(keyconf, iv32, p1k); +} + +/** + * ieee80211_get_tkip_p2k - get a TKIP phase 2 key + * + * This function computes the TKIP RC4 key for the IV values + * in the packet. + * + * @keyconf: the parameter passed with the set key + * @skb: the packet to take the IV32/IV16 values from that will be + * encrypted with this key + * @p2k: a buffer to which the key will be written, 16 bytes + */ +void ieee80211_get_tkip_p2k(struct ieee80211_key_conf *keyconf, + struct sk_buff *skb, u8 *p2k); + +/** + * struct ieee80211_key_seq - key sequence counter * - * This function computes a TKIP rc4 key for an skb. It computes - * a phase 1 key if needed (iv16 wraps around). This function is to - * be used by drivers which can do HW encryption but need to compute - * to phase 1/2 key in SW. + * @tkip: TKIP data, containing IV32 and IV16 in host byte order + * @ccmp: PN data, most significant byte first (big endian, + * reverse order than in packet) + * @aes_cmac: PN data, most significant byte first (big endian, + * reverse order than in packet) + */ +struct ieee80211_key_seq { + union { + struct { + u32 iv32; + u16 iv16; + } tkip; + struct { + u8 pn[6]; + } ccmp; + struct { + u8 pn[6]; + } aes_cmac; + }; +}; + +/** + * ieee80211_get_key_tx_seq - get key TX sequence counter * * @keyconf: the parameter passed with the set key - * @skb: the skb for which the key is needed - * @type: TBD - * @key: a buffer to which the key will be written + * @seq: buffer to receive the sequence data + * + * This function allows a driver to retrieve the current TX IV/PN + * for the given key. It must not be called if IV generation is + * offloaded to the device. + * + * Note that this function may only be called when no TX processing + * can be done concurrently, for example when queues are stopped + * and the stop has been synchronized. */ -void ieee80211_get_tkip_key(struct ieee80211_key_conf *keyconf, - struct sk_buff *skb, - enum ieee80211_tkip_key_type type, u8 *key); +void ieee80211_get_key_tx_seq(struct ieee80211_key_conf *keyconf, + struct ieee80211_key_seq *seq); + +/** + * ieee80211_get_key_rx_seq - get key RX sequence counter + * + * @keyconf: the parameter passed with the set key + * @tid: The TID, or -1 for the management frame value (CCMP only); + * the value on TID 0 is also used for non-QoS frames. For + * CMAC, only TID 0 is valid. + * @seq: buffer to receive the sequence data + * + * This function allows a driver to retrieve the current RX IV/PNs + * for the given key. It must not be called if IV checking is done + * by the device and not by mac80211. + * + * Note that this function may only be called when no RX processing + * can be done concurrently. + */ +void ieee80211_get_key_rx_seq(struct ieee80211_key_conf *keyconf, + int tid, struct ieee80211_key_seq *seq); /** * ieee80211_gtk_rekey_notify - notify userspace supplicant of rekeying @@ -2933,6 +3024,29 @@ void ieee80211_beacon_loss(struct ieee80211_vif *vif); void ieee80211_connection_loss(struct ieee80211_vif *vif); /** + * ieee80211_resume_disconnect - disconnect from AP after resume + * + * @vif: &struct ieee80211_vif pointer from the add_interface callback. + * + * Instructs mac80211 to disconnect from the AP after resume. + * Drivers can use this after WoWLAN if they know that the + * connection cannot be kept up, for example because keys were + * used while the device was asleep but the replay counters or + * similar cannot be retrieved from the device during resume. + * + * Note that due to implementation issues, if the driver uses + * the reconfiguration functionality during resume the interface + * will still be added as associated first during resume and then + * disconnect normally later. + * + * This function can only be called from the resume callback and + * the driver must not be holding any of its own locks while it + * calls this function, or at least not any locks it needs in the + * key configuration paths (if it supports HW crypto). + */ +void ieee80211_resume_disconnect(struct ieee80211_vif *vif); + +/** * ieee80211_disable_dyn_ps - force mac80211 to temporarily disable dynamic psm * * @vif: &struct ieee80211_vif pointer from the add_interface callback. @@ -3240,4 +3354,9 @@ ieee80211_vif_type_p2p(struct ieee80211_vif *vif) return ieee80211_iftype_p2p(vif->type, vif->p2p); } +void ieee80211_enable_rssi_reports(struct ieee80211_vif *vif, + int rssi_min_thold, + int rssi_max_thold); + +void ieee80211_disable_rssi_reports(struct ieee80211_vif *vif); #endif /* MAC80211_H */ |