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This commit is contained in:
Matthew N. Dodd 2002-03-29 06:58:45 +00:00
parent 32bc1098b2
commit e957d9121e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=93366
1 changed files with 60 additions and 45 deletions
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105
sys/net/if_llc.h
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@ -1,3 +1,5 @@
/* $NetBSD: if_llc.h,v 1.12 1999/11/19 20:41:19 thorpej Exp $ */
/*
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
@ -30,7 +32,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)if_llc.h 8.1 (Berkeley) 6/10/93
* @(#)if_llc.h 8.1 (Berkeley) 6/10/93
* $FreeBSD$
*/
@ -41,60 +43,72 @@
* IEEE 802.2 Link Level Control headers, for use in conjunction with
* 802.{3,4,5} media access control methods.
*
* Headers here do not use bit fields due to shortcomings in many
* Headers here do not use bit fields due to shortcommings in many
* compilers.
*/
struct llc {
u_char llc_dsap;
u_char llc_ssap;
u_int8_t llc_dsap;
u_int8_t llc_ssap;
union {
struct {
u_char control;
u_char format_id;
u_char class;
u_char window_x2;
} type_u;
u_int8_t control;
u_int8_t format_id;
u_int8_t class;
u_int8_t window_x2;
} type_u __attribute__((__packed__));
struct {
u_char num_snd_x2;
u_char num_rcv_x2;
} type_i;
u_int8_t num_snd_x2;
u_int8_t num_rcv_x2;
} type_i __attribute__((__packed__));
struct {
u_char control;
u_char num_rcv_x2;
} type_s;
u_int8_t control;
u_int8_t num_rcv_x2;
} type_s __attribute__((__packed__));
struct {
u_char control;
struct frmrinfo {
u_char rej_pdu_0;
u_char rej_pdu_1;
u_char frmr_control;
u_char frmr_control_ext;
u_char frmr_cause;
} frmrinfo;
} type_frmr;
u_int8_t control;
/*
* We cannot put the following fields in a structure because
* the structure rounding might cause padding.
*/
u_int8_t frmr_rej_pdu0;
u_int8_t frmr_rej_pdu1;
u_int8_t frmr_control;
u_int8_t frmr_control_ext;
u_int8_t frmr_cause;
} type_frmr __attribute__((__packed__));
struct {
u_char control;
u_char org_code[3];
u_short ether_type;
} type_snap;
u_int8_t control;
u_int8_t org_code[3];
u_int16_t ether_type;
} type_snap __attribute__((__packed__));
struct {
u_char control;
u_char control_ext;
} type_raw;
} llc_un;
};
#define llc_control llc_un.type_u.control
#define llc_control_ext llc_un.type_raw.control_ext
#define llc_fid llc_un.type_u.format_id
#define llc_class llc_un.type_u.class
#define llc_window llc_un.type_u.window_x2
#define llc_frmrinfo llc_un.type_frmr.frmrinfo
#define llc_frmr_pdu0 llc_un.type_frmr.frmrinfo.rej_pdu0
#define llc_frmr_pdu1 llc_un.type_frmr.frmrinfo.rej_pdu1
#define llc_frmr_control llc_un.type_frmr.frmrinfo.frmr_control
#define llc_frmr_control_ext llc_un.type_frmr.frmrinfo.frmr_control_ext
#define llc_frmr_cause llc_un.type_frmr.frmrinfo.frmr_control_ext
u_int8_t control;
u_int8_t control_ext;
} type_raw __attribute__((__packed__));
} llc_un /* XXX __attribute__((__packed__)) ??? */;
} __attribute__((__packed__));
struct frmrinfo {
u_int8_t frmr_rej_pdu0;
u_int8_t frmr_rej_pdu1;
u_int8_t frmr_control;
u_int8_t frmr_control_ext;
u_int8_t frmr_cause;
} __attribute__((__packed__));
#define llc_control llc_un.type_u.control
#define llc_control_ext llc_un.type_raw.control_ext
#define llc_fid llc_un.type_u.format_id
#define llc_class llc_un.type_u.class
#define llc_window llc_un.type_u.window_x2
#define llc_frmrinfo llc_un.type_frmr.frmr_rej_pdu0
#define llc_frmr_pdu0 llc_un.type_frmr.frmr_rej_pdu0
#define llc_frmr_pdu1 llc_un.type_frmr.frmr_rej_pdu1
#define llc_frmr_control llc_un.type_frmr.frmr_control
#define llc_frmr_control_ext llc_un.type_frmr.frmr_control_ext
#define llc_frmr_cause llc_un.type_frmr.frmr_cause
#define llc_snap llc_un.type_snap
/*
* Don't use sizeof(struct llc_un) for LLC header sizes
@ -102,6 +116,7 @@ struct llc {
#define LLC_ISFRAMELEN 4
#define LLC_UFRAMELEN 3
#define LLC_FRMRLEN 7
#define LLC_SNAPFRAMELEN 8
/*
* Unnumbered LLC format commands
@ -142,4 +157,4 @@ struct llc {
#define LLC_SNAP_LSAP 0xaa
#define LLC_ISO_LSAP 0xfe
#endif
#endif /* _NET_IF_LLC_H_ */