diff options
Diffstat (limited to 'include/net/llc.h')
| -rw-r--r-- | include/net/llc.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/include/net/llc.h b/include/net/llc.h new file mode 100644 index 0000000..c9aed2a --- /dev/null +++ b/include/net/llc.h @@ -0,0 +1,99 @@ +#ifndef LLC_H +#define LLC_H +/* + * Copyright (c) 1997 by Procom Technology, Inc. + * 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br> + * + * This program can be redistributed or modified under the terms of the + * GNU General Public License as published by the Free Software Foundation. + * This program is distributed without any warranty or implied warranty + * of merchantability or fitness for a particular purpose. + * + * See the GNU General Public License for more details. + */ + +#include <linux/if.h> +#include <linux/if_ether.h> +#include <linux/list.h> +#include <linux/spinlock.h> + +struct net_device; +struct packet_type; +struct sk_buff; + +struct llc_addr { + unsigned char lsap; + unsigned char mac[IFHWADDRLEN]; +}; + +#define LLC_SAP_STATE_INACTIVE 1 +#define LLC_SAP_STATE_ACTIVE 2 + +/** + * struct llc_sap - Defines the SAP component + * + * @station - station this sap belongs to + * @state - sap state + * @p_bit - only lowest-order bit used + * @f_bit - only lowest-order bit used + * @laddr - SAP value in this 'lsap' + * @node - entry in station sap_list + * @sk_list - LLC sockets this one manages + */ +struct llc_sap { + unsigned char state; + unsigned char p_bit; + unsigned char f_bit; + int (*rcv_func)(struct sk_buff *skb, + struct net_device *dev, + struct packet_type *pt); + struct llc_addr laddr; + struct list_head node; + struct { + rwlock_t lock; + struct hlist_head list; + } sk_list; +}; + +#define LLC_DEST_INVALID 0 /* Invalid LLC PDU type */ +#define LLC_DEST_SAP 1 /* Type 1 goes here */ +#define LLC_DEST_CONN 2 /* Type 2 goes here */ + +extern struct list_head llc_sap_list; +extern rwlock_t llc_sap_list_lock; +extern unsigned char llc_station_mac_sa[ETH_ALEN]; + +extern int llc_rcv(struct sk_buff *skb, struct net_device *dev, + struct packet_type *pt); + +extern int llc_mac_hdr_init(struct sk_buff *skb, + unsigned char *sa, unsigned char *da); + +extern void llc_add_pack(int type, void (*handler)(struct llc_sap *sap, + struct sk_buff *skb)); +extern void llc_remove_pack(int type); + +extern void llc_set_station_handler(void (*handler)(struct sk_buff *skb)); + +extern struct llc_sap *llc_sap_open(unsigned char lsap, + int (*rcv)(struct sk_buff *skb, + struct net_device *dev, + struct packet_type *pt)); +extern void llc_sap_close(struct llc_sap *sap); + +extern struct llc_sap *llc_sap_find(unsigned char sap_value); + +extern int llc_build_and_send_ui_pkt(struct llc_sap *sap, struct sk_buff *skb, + unsigned char *dmac, unsigned char dsap); + +extern int llc_station_init(void); +extern void llc_station_exit(void); + +#ifdef CONFIG_PROC_FS +extern int llc_proc_init(void); +extern void llc_proc_exit(void); +#else +#define llc_proc_init() (0) +#define llc_proc_exit() do { } while(0) +#endif /* CONFIG_PROC_FS */ +#endif /* LLC_H */ |
