f3119eec8d
Reimplmenting what is already there doesn't make sense. Switch to the existing and UDP tunnel support code and handle the data channel as a connected UDP socket
154 lines
4.1 KiB
C
154 lines
4.1 KiB
C
#ifndef __KMOD_CAPWAP_HEADER__
|
|
#define __KMOD_CAPWAP_HEADER__
|
|
|
|
#include <linux/socket.h>
|
|
#include <linux/in.h>
|
|
#include <linux/in6.h>
|
|
#include <linux/skbuff.h>
|
|
|
|
#include <net/protocol.h>
|
|
#include <net/ip.h>
|
|
#include <net/udp.h>
|
|
#include <net/udp_tunnel.h>
|
|
|
|
#include "capwap_rfc.h"
|
|
|
|
/* */
|
|
#define STA_HASH_SIZE 16
|
|
|
|
/* */
|
|
#define MAX_MTU 9000
|
|
#define DEFAULT_MTU 1450
|
|
#define MIN_MTU 500
|
|
#define IEEE80211_MTU 7981
|
|
|
|
/* */
|
|
#define CAPWAP_FRAGMENT_QUEUE 16
|
|
|
|
/* */
|
|
#define CAPWAP_FRAGMENT_ENABLE 0x0001
|
|
#define CAPWAP_FRAGMENT_LRUQUEUE 0x0002
|
|
#define CAPWAP_FRAGMENT_LAST 0x0004
|
|
|
|
/* */
|
|
#define SKB_CAPWAP_FLAG_FROM_DATA_CHANNEL 0x0001
|
|
#define SKB_CAPWAP_FLAG_FROM_USER_SPACE 0x0002
|
|
#define SKB_CAPWAP_FLAG_FROM_AC_TAP 0x0004
|
|
#define SKB_CAPWAP_FLAG_FROM_IEEE80211 0x0008
|
|
|
|
#define SKB_CAPWAP_FLAG_SESSIONID 0x0100
|
|
#define SKB_CAPWAP_FLAG_RADIOID 0x0200
|
|
#define SKB_CAPWAP_FLAG_BINDING 0x0400
|
|
#define SKB_CAPWAP_FLAG_WIRELESSINFORMATION 0x0800
|
|
#define SKB_CAPWAP_FLAG_FRAGMENT 0x1000
|
|
|
|
/* Universal socket address */
|
|
union capwap_addr {
|
|
struct sockaddr sa;
|
|
struct sockaddr_in sin;
|
|
struct sockaddr_in6 sin6;
|
|
struct sockaddr_storage ss;
|
|
};
|
|
|
|
struct sc_station {
|
|
struct hlist_node station_list;
|
|
|
|
uint8_t radioid;
|
|
uint8_t mac[ETH_ALEN];
|
|
uint8_t wlanid;
|
|
|
|
struct rcu_head rcu_head;
|
|
};
|
|
|
|
struct sc_skb_capwap_cb {
|
|
uint16_t flags;
|
|
|
|
/* Session ID */
|
|
struct sc_capwap_sessionid_element sessionid;
|
|
|
|
/* Capwap information */
|
|
uint8_t radioid;
|
|
uint8_t binding;
|
|
|
|
/* Wireless Information */
|
|
uint8_t winfo_rssi;
|
|
uint8_t winfo_snr;
|
|
uint16_t winfo_rate;
|
|
|
|
/* Fragment */
|
|
uint16_t frag_offset;
|
|
uint16_t frag_length;
|
|
};
|
|
|
|
#define CAPWAP_SKB_CB(skb) ((struct sc_skb_capwap_cb*)((skb)->cb))
|
|
|
|
/* */
|
|
struct sc_capwap_fragment {
|
|
struct list_head lru_list;
|
|
|
|
uint8_t flags;
|
|
ktime_t tstamp;
|
|
|
|
uint16_t fragmentid;
|
|
|
|
struct sk_buff* fragments;
|
|
struct sk_buff* lastfragment;
|
|
int recvlength;
|
|
int totallength;
|
|
};
|
|
|
|
/* */
|
|
struct sc_capwap_fragment_queue {
|
|
spinlock_t lock;
|
|
|
|
struct list_head lru_list;
|
|
struct sc_capwap_fragment queues[CAPWAP_FRAGMENT_QUEUE];
|
|
};
|
|
|
|
/* */
|
|
struct sc_capwap_session {
|
|
struct net *net;
|
|
|
|
struct socket *socket;
|
|
struct udp_port_cfg udp_config;
|
|
uint16_t mtu;
|
|
struct sc_capwap_sessionid_element sessionid;
|
|
|
|
atomic_t fragmentid;
|
|
struct sc_capwap_fragment_queue fragments;
|
|
|
|
struct hlist_head station_list[STA_HASH_SIZE];
|
|
};
|
|
|
|
/* Dipendent implementation function */
|
|
int sc_capwap_recvpacket(struct sock *sk, struct sk_buff* skb);
|
|
struct sc_capwap_session* sc_capwap_recvunknownkeepalive(struct sc_capwap_session* session,
|
|
const struct sc_capwap_sessionid_element* sessionid);
|
|
|
|
void sc_capwap_parsingdatapacket(struct sc_capwap_session* session, struct sk_buff* skb);
|
|
void sc_capwap_parsingmgmtpacket(struct sc_capwap_session* session, struct sk_buff* skb);
|
|
|
|
/* Indipendent implementation function */
|
|
int sc_capwap_create(struct sc_capwap_session *session);
|
|
int sc_capwap_send(struct sc_capwap_session *session, uint8_t* buffer, int length);
|
|
void sc_capwap_close(struct sc_capwap_session *session);
|
|
|
|
int sc_capwap_8023_to_80211(struct sk_buff* skb, const uint8_t* bssid);
|
|
int sc_capwap_80211_to_8023(struct sk_buff* skb);
|
|
|
|
void sc_capwap_sessionid_printf(const struct sc_capwap_sessionid_element* sessionid, char* string);
|
|
|
|
int sc_capwap_createkeepalive(struct sc_capwap_sessionid_element* sessionid, uint8_t* buffer, int size);
|
|
int sc_capwap_parsingpacket(struct sc_capwap_session* session, struct sk_buff* skb);
|
|
|
|
struct sc_capwap_radio_addr* sc_capwap_setradiomacaddress(uint8_t* buffer, int size, uint8_t* bssid);
|
|
struct sc_capwap_wireless_information* sc_capwap_setwinfo_frameinfo(uint8_t* buffer, int size, uint8_t rssi, uint8_t snr, uint16_t rate);
|
|
struct sc_capwap_wireless_information* sc_capwap_setwinfo_destwlans(uint8_t* buffer, int size, uint16_t wlanidbitmap);
|
|
|
|
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);
|
|
|
|
/* Private funciotn */
|
|
#include "capwap_private.h"
|
|
|
|
#endif /* __KMOD_CAPWAP_HEADER__ */
|