155 lines
4.1 KiB
C
155 lines
4.1 KiB
C
#ifndef __KMOD_CAPWAP_HEADER__
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#define __KMOD_CAPWAP_HEADER__
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/in6.h>
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#include <linux/skbuff.h>
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#include <net/protocol.h>
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#include <net/ip.h>
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#include <net/udp.h>
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#include <net/udp_tunnel.h>
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#include "capwap_rfc.h"
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/* */
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#define STA_HASH_SIZE 16
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/* */
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#define MAX_MTU 9000
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#define DEFAULT_MTU 1450
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#define MIN_MTU 500
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#define IEEE80211_MTU 7981
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/* */
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#define CAPWAP_FRAGMENT_QUEUE 16
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/* */
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#define CAPWAP_FRAGMENT_ENABLE 0x0001
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#define CAPWAP_FRAGMENT_LRUQUEUE 0x0002
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#define CAPWAP_FRAGMENT_LAST 0x0004
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/* */
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#define SKB_CAPWAP_FLAG_FROM_DATA_CHANNEL 0x0001
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#define SKB_CAPWAP_FLAG_FROM_USER_SPACE 0x0002
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#define SKB_CAPWAP_FLAG_FROM_AC_TAP 0x0004
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#define SKB_CAPWAP_FLAG_FROM_IEEE80211 0x0008
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#define SKB_CAPWAP_FLAG_SESSIONID 0x0100
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#define SKB_CAPWAP_FLAG_RADIOID 0x0200
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#define SKB_CAPWAP_FLAG_BINDING 0x0400
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#define SKB_CAPWAP_FLAG_WIRELESSINFORMATION 0x0800
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#define SKB_CAPWAP_FLAG_FRAGMENT 0x1000
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/* Universal socket address */
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union capwap_addr {
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struct sockaddr sa;
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struct sockaddr_in sin;
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struct sockaddr_in6 sin6;
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struct sockaddr_storage ss;
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};
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#define STA_FLAG_AKM_ONLY 0x0001
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struct sc_station {
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struct hlist_node station_list;
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uint8_t radioid;
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uint8_t mac[ETH_ALEN];
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uint8_t wlanid;
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uint32_t flags;
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struct rcu_head rcu_head;
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};
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struct sc_skb_capwap_cb {
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uint16_t flags;
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/* Session ID */
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struct sc_capwap_sessionid_element sessionid;
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/* Capwap information */
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uint8_t radioid;
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uint8_t binding;
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/* Wireless Information */
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uint8_t winfo_rssi;
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uint8_t winfo_snr;
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uint16_t winfo_rate;
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/* Fragment */
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uint16_t frag_offset;
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uint16_t frag_length;
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};
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#define CAPWAP_SKB_CB(skb) ((struct sc_skb_capwap_cb*)((skb)->cb))
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/* */
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struct sc_capwap_fragment {
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struct list_head lru_list;
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uint8_t flags;
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ktime_t tstamp;
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uint16_t fragmentid;
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struct sk_buff* fragments;
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struct sk_buff* lastfragment;
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int recvlength;
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int totallength;
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};
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/* */
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struct sc_capwap_fragment_queue {
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spinlock_t lock;
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struct list_head lru_list;
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struct sc_capwap_fragment queues[CAPWAP_FRAGMENT_QUEUE];
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};
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/* */
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struct sc_capwap_session {
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struct net *net;
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struct socket *socket;
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struct udp_port_cfg udp_config;
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uint16_t mtu;
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struct sc_capwap_sessionid_element sessionid;
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atomic_t fragmentid;
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struct sc_capwap_fragment_queue fragments;
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struct hlist_head station_list[STA_HASH_SIZE];
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};
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/* Dipendent implementation function */
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int sc_capwap_recvpacket(struct sock *sk, struct sk_buff* skb);
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struct sc_capwap_session* sc_capwap_recvunknownkeepalive(struct sc_capwap_session* session,
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const struct sc_capwap_sessionid_element* sessionid);
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void sc_capwap_parsingdatapacket(struct sc_capwap_session* session, struct sk_buff* skb);
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void sc_capwap_parsingmgmtpacket(struct sc_capwap_session* session, struct sk_buff* skb);
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/* Indipendent implementation function */
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int sc_capwap_create(struct sc_capwap_session *session);
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int sc_capwap_send(struct sc_capwap_session *session, uint8_t* buffer, int length);
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void sc_capwap_close(struct sc_capwap_session *session);
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int sc_capwap_8023_to_80211(struct sk_buff* skb, const uint8_t* bssid);
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int sc_capwap_80211_to_8023(struct sk_buff* skb);
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int sc_capwap_createkeepalive(struct sc_capwap_sessionid_element* sessionid, uint8_t* buffer, int size);
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int sc_capwap_parsingpacket(struct sc_capwap_session* session, struct sk_buff* skb);
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struct sc_capwap_radio_addr* sc_capwap_setradiomacaddress(uint8_t* buffer, int size, uint8_t* bssid);
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struct sc_capwap_wireless_information* sc_capwap_setwinfo_frameinfo(uint8_t* buffer, int size, uint8_t rssi, uint8_t snr, uint16_t rate);
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struct sc_capwap_wireless_information* sc_capwap_setwinfo_destwlans(uint8_t* buffer, int size, uint16_t wlanidbitmap);
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int sc_capwap_forwarddata(struct sc_capwap_session* session, uint8_t radioid, uint8_t binding, struct sk_buff* skb, uint32_t flags, struct sc_capwap_radio_addr* radioaddr, int radioaddrlength, struct sc_capwap_wireless_information* winfo, int winfolength);
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/* Private funciotn */
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#include "capwap_private.h"
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#endif /* __KMOD_CAPWAP_HEADER__ */
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