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https://github.com/Mathewnd/Astral.git
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Matheus
104 lines
3.7 KiB
C
104 lines
3.7 KiB
C
#ifndef U80211_U80211_H
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#define U80211_U80211_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <u80211/bss_cache.h>
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#include <u80211/list.h>
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#include <u80211/packet.h>
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#include <u80211/ap.h>
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#include <u80211/key.h>
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#include <u80211/status.h>
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static inline void *u80211_descriptor_allocate_space(u80211_tx_buffer_descriptor_t *descriptor, size_t size) {
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if (size > descriptor->current_offset)
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return NULL;
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descriptor->current_offset -= size;
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return (uint8_t *)descriptor->data + descriptor->current_offset;
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}
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typedef struct {
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int (*allocate_tx_buffer)(void *driver_data, size_t size, u80211_tx_buffer_descriptor_t *buffer_descriptor);
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int (*free_tx_buffer)(void *driver_data, u80211_tx_buffer_descriptor_t *buffer_descriptor);
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int (*transmit)(void *driver_data, u80211_tx_buffer_descriptor_t *buffer_descriptor, const u80211_transmit_options_t *options);
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int (*set_channel)(void *driver_data, int channel);
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int (*set_key)(void *driver_data, const u80211_key_t *key);
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int (*del_key)(void *driver_data, uint8_t index, const u80211_mac_address_t *peer, uint32_t flags);
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} u80211_device_ops_t;
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typedef struct {
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u80211_mac_address_t mac_address;
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uint8_t rate_bitmap[16];
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} u80211_device_metadata_t;
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#define U80211_DEVICE_STATE_DOWN 0
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#define U80211_DEVICE_STATE_SCANNING 1
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#define U80211_DEVICE_STATE_AUTHENTICATING 2
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#define U80211_DEVICE_STATE_ASSOCIATING 3
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#define U80211_DEVICE_STATE_ASSOCIATED 4
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#define U80211_DEVICE_STATE_DEAUTHENTICATING 5
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struct u80211_device {
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u80211_device_metadata_t metadata;
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void *driver_data;
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const u80211_device_ops_t *ops;
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int state;
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size_t packet_count;
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uint16_t tx_sequence_control;
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uint16_t received_sequence_control;
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bool received_sequence_control_valid;
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void *key_spinlock;
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u80211_list_t keys;
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void *scan_spinlock;
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void *scan_context;
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void *scan_cleanup_work;
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u80211_list_t scan_waiters;
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bss_cache_t bss_cache;
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void *association_spinlock;
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void *association_context;
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void *association_cleanup_work;
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void *association_cleanup_context;
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bool association_cleanup_pending;
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u80211_list_t association_waiters;
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unsigned int association_generation;
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int association_result;
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u80211_ap_t *ap;
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u80211_ap_t *disconnected_ap;
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};
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static inline int u80211_get_device_state(u80211_device_t *device) {
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return __atomic_load_n(&device->state, __ATOMIC_ACQUIRE);
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}
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static inline bool u80211_set_device_state(u80211_device_t *device, int old_state, int new_state) {
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return __atomic_compare_exchange_n(&device->state, &old_state, new_state, false, __ATOMIC_ACQ_REL, __ATOMIC_RELAXED);
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}
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int u80211_scan(u80211_device_t *device);
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int u80211_wait_for_scan_completion(u80211_device_t *device);
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void u80211_process_packet(u80211_device_t *device, void *packet, size_t packet_size);
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// these are mostly diagnostic and should not be relied upon
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size_t u80211_get_packet_count(u80211_device_t *device);
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void u80211_reset_packet_count(u80211_device_t *device);
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int u80211_register_device(const u80211_device_metadata_t *metadata, const u80211_device_ops_t *ops, void *driver_data, u80211_device_t **device_out);
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void u80211_unregister_device(u80211_device_t *device);
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int u80211_associate(u80211_device_t *device, u80211_ap_t *ap, const void *information_elements, size_t information_elements_size);
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int u80211_wait_for_association_completion(u80211_device_t *device);
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int u80211_disassociate(u80211_device_t *device);
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// allocates an ethernet-sized buffer
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int u80211_allocate_tx_buffer(u80211_device_t *device, u80211_tx_buffer_descriptor_t *descriptor);
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// expects an ethernet header. descriptor **must** be a buffer returned by u80211_allocate_tx_buffer.
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// consumes the descriptor regardless of the returned status.
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int u80211_transmit_buffer(u80211_device_t *device, u80211_tx_buffer_descriptor_t *descriptor);
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#endif
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