home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
- /*
- * Copyright (c) 1999 Apple Computer, Inc.
- *
- * Data Link Inteface Layer
- * Author: Ted Walker
- */
-
-
- #ifndef DLIL_H
- #define DLIL_H
-
- #if __STDC__
-
- struct ifnet;
- struct mbuf;
- struct ether_header;
-
- #endif
-
-
-
- #define DLIL_LAST_FILTER -1
- #define DLIL_NULL_FILTER -2
-
- #define DLIL_WAIT_FOR_FREE -2
-
- #define DLIL_BLUEBOX 1
-
-
-
- #include <net/if.h>
- #include <net/if_var.h>
- #include <sys/kern_event.h>
-
- enum {
- BPF_TAP_DISABLE,
- BPF_TAP_INPUT,
- BPF_TAP_OUTPUT,
- BPF_TAP_INPUT_OUTPUT
- };
-
-
- struct dl_tag_attr_str {
- u_long dl_tag;
- short if_flags;
- short if_unit;
- u_long if_family;
- u_long protocol_family;
- };
-
-
- struct dlil_pr_flt_str {
- caddr_t cookie;
-
- int (*filter_dl_input)(caddr_t cookie,
- struct mbuf **m,
- char **frame_header,
- struct ifnet **ifp);
-
-
- int (*filter_dl_output)(caddr_t cookie,
- struct mbuf **m,
- struct ifnet **ifp,
- struct sockaddr **dest,
- char *dest_linkaddr,
- char *frame_type);
-
- int (*filter_dl_event)(caddr_t cookie,
- struct kern_event_msg *event_msg);
-
- int (*filter_dl_ioctl)(caddr_t cookie,
- struct ifnet *ifp,
- u_long ioctl_cmd,
- caddr_t ioctl_arg);
-
- int (*filter_detach)(caddr_t cookie);
- u_long reserved[2];
- };
-
- struct dlil_if_flt_str {
- caddr_t cookie;
- int (*filter_if_input)(caddr_t cookie,
- struct ifnet **ifnet_ptr,
- struct mbuf **mbuf_ptr,
- char **frame_ptr);
-
- int (*filter_if_event)(caddr_t cookie,
- struct ifnet **ifnet_ptr,
- struct kern_event_msg **event_msg_ptr);
-
- int (*filter_if_output)(caddr_t cookie,
- struct ifnet **ifnet_ptr,
- struct mbuf **mbuf_ptr);
-
-
- int (*filter_if_ioctl)(caddr_t cookie,
- struct ifnet *ifnet_ptr,
- u_long ioctl_code_ptr,
- caddr_t ioctl_arg_ptr);
-
- int (*filter_if_free)(caddr_t cookie,
- struct ifnet *ifnet_ptr);
-
- int (*filter_detach)(caddr_t cookie);
- u_long reserved[2];
- };
-
-
- #define DLIL_PR_FILTER 1
- #define DLIL_IF_FILTER 2
-
-
-
- typedef int (*dl_input_func)(struct mbuf *m, char *frame_header,
- struct ifnet *ifp, u_long dl_tag, int sync_ok);
- typedef int (*dl_pre_output_func)(struct ifnet *ifp,
- struct mbuf **m,
- struct sockaddr *dest,
- caddr_t route_entry,
- char *frame_type,
- char *dst_addr,
- u_long dl_tag);
-
- typedef int (*dl_event_func)(struct kern_event_msg *event,
- u_long dl_tag);
-
- typedef int (*dl_offer_func)(struct mbuf *m, char *frame_header);
- typedef int (*dl_ioctl_func)(u_long dl_tag,
- struct ifnet *ifp,
- u_long ioctl_cmd,
- caddr_t ioctl_arg);
-
-
-
- struct dlil_filterq_entry {
- TAILQ_ENTRY(dlil_filterq_entry) que;
- u_long filter_id;
- int type;
- union {
- struct dlil_if_flt_str if_filter;
- struct dlil_pr_flt_str pr_filter;
- } variants;
- };
-
-
- TAILQ_HEAD(dlil_filterq_head, dlil_filterq_entry);
-
-
- struct if_proto {
- TAILQ_ENTRY(if_proto) next;
- u_long dl_tag;
- struct dlil_filterq_head pr_flt_head;
- struct ifnet *ifp;
- dl_input_func dl_input;
- dl_pre_output_func dl_pre_output;
- dl_event_func dl_event;
- dl_offer_func dl_offer;
- dl_ioctl_func dl_ioctl;
- u_long protocol_family;
- u_long reserved[4];
-
- };
-
- TAILQ_HEAD(dlil_proto_head, if_proto);
-
- struct dlil_tag_list_entry {
- TAILQ_ENTRY(dlil_tag_list_entry) next;
- struct ifnet *ifp;
- u_long dl_tag;
- };
-
-
- #define DLIL_DESC_RAW 1
- #define DLIL_DESC_802_2 2
- #define DLIL_DESC_802_2_SNAP 3
-
- struct dlil_demux_desc {
- TAILQ_ENTRY(dlil_demux_desc) next;
- int type;
-
- u_char *native_type;
- union {
- struct {
- u_long proto_id_length; /* IN LONGWORDS!!! */
- u_char *proto_id;
- u_char *proto_id_mask;
-
- } bitmask;
-
- struct {
- u_char dsap;
- u_char ssap;
- u_char control_code;
- u_char pad;
- } desc_802_2;
-
- struct {
- u_char dsap;
- u_char ssap;
- u_char control_code;
- u_char org[3];
- u_short protocol_type;
- } desc_802_2_SNAP;
- } variants;
- };
-
- TAILQ_HEAD(ddesc_head_str, dlil_demux_desc);
-
-
- struct dlil_proto_reg_str {
- struct ddesc_head_str demux_desc_head;
- u_long interface_family;
- u_long protocol_family;
- short unit_number;
- int default_proto; /* 0 or 1 */
- dl_input_func input;
- dl_pre_output_func pre_output;
- dl_event_func event;
- dl_offer_func offer;
- dl_ioctl_func ioctl;
- u_long reserved[4];
- };
-
-
- int dlil_attach_interface_filter(struct ifnet *ifnet_ptr,
- struct dlil_if_flt_str *interface_filter,
- u_long *filter_id,
- int insertion_point);
-
- int
- dlil_input(struct ifnet *ifp, struct mbuf *m_head, struct mbuf *m_tail);
-
- int
- dlil_output(u_long dl_tag,
- struct mbuf *m,
- caddr_t route,
- struct sockaddr *dest,
- int raw);
-
-
- int
- dlil_ioctl(u_long proto_family,
- struct ifnet *ifp,
- u_long ioctl_code,
- caddr_t ioctl_arg);
-
- int
- dlil_attach_protocol(struct dlil_proto_reg_str *proto,
- u_long *dl_tag);
-
- int
- dlil_detach_protocol(u_long dl_tag);
-
- int
- dlil_if_attach(struct ifnet *ifp);
-
- int
- dlil_attach_protocol_filter(u_long dl_tag,
- struct dlil_pr_flt_str *proto_filter,
- u_long *filter_id,
- int insertion_point);
- int
- dlil_detach_filter(u_long filter_id);
-
- struct dlil_ifmod_reg_str {
- int (*add_if)(struct ifnet *ifp);
- int (*del_if)(struct ifnet *ifp);
- int (*add_proto)(struct ddesc_head_str *demux_desc_head,
- struct if_proto *proto, u_long dl_tag);
- int (*del_proto)(struct if_proto *proto, u_long dl_tag);
- int (*ifmod_ioctl)(struct ifnet *ifp, u_long ioctl_cmd, caddr_t data);
- int (*shutdown)();
- u_long reserved[4];
- };
-
-
- int dlil_reg_if_modules(u_long interface_family,
- struct dlil_ifmod_reg_str *ifmod_reg);
-
- int
- dlil_inject_if_input(struct mbuf *m, char *frame_header, u_long from_id);
-
- int
- dlil_inject_pr_input(struct mbuf *m, char *frame_header, u_long from_id);
-
- int
- dlil_inject_pr_output(struct mbuf *m,
- struct sockaddr *dest,
- int raw,
- char *frame_type,
- char *dst_linkaddr,
- u_long from_id);
-
- int
- dlil_inject_if_output(struct mbuf *m, u_long from_id);
-
- int
- dlil_find_dltag(u_long if_family, short unit, u_long proto_family, u_long *dl_tag);
-
-
- int
- dlil_event(struct ifnet *ifp, struct kern_event_msg *event);
-
- int dlil_dereg_if_modules(u_long interface_family);
-
- int
- dlil_if_detach(struct ifnet *ifp);
-
- #endif /* DLIL_H */
-