root/include/linux/atmbr2684.h

INCLUDED FROM

#ifndef _LINUX_ATMBR2684_H
#define _LINUX_ATMBR2684_H

#include <linux/atm.h>
#include <linux/if.h>           /* For IFNAMSIZ */

/*
 * Type of media we're bridging (ethernet, token ring, etc)  Currently only
 * ethernet is supported
 */
#define BR2684_MEDIA_ETHERNET   (0)     /* 802.3 */
#define BR2684_MEDIA_802_4      (1)     /* 802.4 */
#define BR2684_MEDIA_TR         (2)     /* 802.5 - token ring */
#define BR2684_MEDIA_FDDI       (3)
#define BR2684_MEDIA_802_6      (4)     /* 802.6 */

                                        /* used only at device creation:  */
#define BR2684_FLAG_ROUTED      (1<<16) /* payload is routed, not bridged */

/*
 * Is there FCS inbound on this VC?  This currently isn't supported.
 */
#define BR2684_FCSIN_NO         (0)
#define BR2684_FCSIN_IGNORE     (1)
#define BR2684_FCSIN_VERIFY     (2)

/*
 * Is there FCS outbound on this VC?  This currently isn't supported.
 */
#define BR2684_FCSOUT_NO        (0)
#define BR2684_FCSOUT_SENDZERO  (1)
#define BR2684_FCSOUT_GENERATE  (2)

/*
 * Does this VC include LLC encapsulation?
 */
#define BR2684_ENCAPS_VC        (0)     /* VC-mux */
#define BR2684_ENCAPS_LLC       (1)
#define BR2684_ENCAPS_AUTODETECT (2)    /* Unsuported */

/*
 * Is this VC bridged or routed?
 */

#define BR2684_PAYLOAD_ROUTED   (0)
#define BR2684_PAYLOAD_BRIDGED  (1)

/*
 * This is for the ATM_NEWBACKENDIF call - these are like socket families:
 * the first element of the structure is the backend number and the rest
 * is per-backend specific
 */
struct atm_newif_br2684 {
        atm_backend_t backend_num;      /* ATM_BACKEND_BR2684 */
        int media;              /* BR2684_MEDIA_*, flags in upper bits */
        char ifname[IFNAMSIZ];
        int mtu;
};

/*
 * This structure is used to specify a br2684 interface - either by a
 * positive integer (returned by ATM_NEWBACKENDIF) or the interfaces name
 */
#define BR2684_FIND_BYNOTHING   (0)
#define BR2684_FIND_BYNUM       (1)
#define BR2684_FIND_BYIFNAME    (2)
struct br2684_if_spec {
        int method;             /* BR2684_FIND_* */
        union {
                char ifname[IFNAMSIZ];
                int devnum;
        } spec;
};

/*
 * This is for the ATM_SETBACKEND call - these are like socket families:
 * the first element of the structure is the backend number and the rest
 * is per-backend specific
 */
struct atm_backend_br2684 {
        atm_backend_t backend_num;      /* ATM_BACKEND_BR2684 */
        struct br2684_if_spec ifspec;
        int fcs_in;             /* BR2684_FCSIN_* */
        int fcs_out;            /* BR2684_FCSOUT_* */
        int fcs_auto;           /* 1: fcs_{in,out} disabled if no FCS rx'ed */
        int encaps;             /* BR2684_ENCAPS_* */
        int has_vpiid;          /* 1: use vpn_id - Unsupported */
        __u8 vpn_id[7];
        int send_padding;       /* unsupported */
        int min_size;           /* we will pad smaller packets than this */
};

/*
 * The BR2684_SETFILT ioctl is an experimental mechanism for folks
 * terminating a large number of IP-only vcc's.  When netfilter allows
 * efficient per-if in/out filters, this support will be removed
 */
struct br2684_filter {
        __be32 prefix;          /* network byte order */
        __be32 netmask;         /* 0 = disable filter */
};

struct br2684_filter_set {
        struct br2684_if_spec ifspec;
        struct br2684_filter filter;
};

enum br2684_payload {
        p_routed = BR2684_PAYLOAD_ROUTED,
        p_bridged = BR2684_PAYLOAD_BRIDGED,
};

#define BR2684_SETFILT  _IOW( 'a', ATMIOC_BACKEND + 0, \
                                struct br2684_filter_set)

#endif /* _LINUX_ATMBR2684_H */