+++ /dev/null
-/*
- * Copyright (c) 1988-2007 Apple Inc. All rights reserved.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
- * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
- */
-/*
- * 0.01 05/12/94 Laurent Dumont Creation
- *
- * Modified, March 17, 1997 by Tuyen Nguyen for MacOSX.
- */
-/*
- *
- * Router ZIP protocol functions:
- *
- * This file contains Routing specifics to handle ZIP requests and responses
- * sent and received by a router node.
- *
- * The entry point for the zip input in ddp is valid only when we're
- * running in router mode.
- *
- */
-
-#include <sys/errno.h>
-#include <sys/types.h>
-#include <sys/param.h>
-#include <machine/spl.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/proc.h>
-#include <sys/filedesc.h>
-#include <sys/fcntl.h>
-#include <sys/mbuf.h>
-#include <sys/ioctl.h>
-#include <sys/malloc.h>
-#include <sys/socket.h>
-#include <sys/socketvar.h>
-
-#include <net/if.h>
-#include <net/if_types.h>
-
-#include <netat/sysglue.h>
-#include <netat/appletalk.h>
-#include <netat/at_pcb.h>
-#include <netat/at_var.h>
-#include <netat/ddp.h>
-#include <netat/nbp.h>
-#include <netat/zip.h>
-#include <netat/atp.h>
-#include <netat/routing_tables.h>
-#include <netat/rtmp.h>
-#include <netat/debug.h>
-
-#include <sys/kern_event.h>
-
-/* globals */
-extern at_ifaddr_t *ifID_table[], *ifID_home;
-extern short ErrorZIPoverflow;
-
-/**********************************************************************
- * Remarks :
- * ZIP is implemented as a "peer" of DDP, so the packets coming in
- * to ZIP have the same headers as those coming in to DDP {ddp...}.
- * Same applies to outgoing packets. Also, unlike DDP, ZIP assumes
- * that an incoming packet is in a contiguous gbuf_t.
- *
- **********************************************************************/
-
-static int netinfo_reply_pending;
-static void zip_netinfo_reply(at_x_zip_t *, at_ifaddr_t *);
-static void zip_getnetinfo(at_ifaddr_t *);
-static void zip_getnetinfo_locked(void *);
-static void send_phony_reply(void *);
-
-int zip_reply_received(gbuf_t *, at_ifaddr_t *, int);
-int zip_reply_to_getlocalzones(at_ifaddr_t *, gbuf_t *);
-int zip_reply_to_getzonelist(at_ifaddr_t *, gbuf_t *);
-static void zip_reply_to_getmyzone(at_ifaddr_t *, gbuf_t *);
-gbuf_t *zip_prep_query_packet(at_ifaddr_t *, at_net_al, at_node);
-
-static void zip_send_reply_to_query(gbuf_t *, at_ifaddr_t *);
-static void zip_send_ext_reply_to_query(gbuf_t *, at_ifaddr_t *, RT_entry *, u_short);
-static gbuf_t *prep_ZIP_reply_packet(gbuf_t *, at_ifaddr_t *);
-static void zip_send_getnetinfo_reply(gbuf_t *, at_ifaddr_t *);
-
-/*
- * zip_send_getnetinfo_reply: we received a GetNetInfo packet, we need to reply
- * with the right information for the port.
- */
-static void zip_send_getnetinfo_reply(m, ifID)
- register gbuf_t *m;
- register at_ifaddr_t *ifID;
-{
- at_nvestr_t *zname;
- gbuf_t *m_sent;
- at_ddp_t *ddp, *ddp_sent;
- short ZoneNameProvided = FALSE;
- short RequestIsBroadcasted = FALSE;
- u_short znumber, len, packet_length = 0, size, status;
- RT_entry *Entry;
- char GNIReply[128];
-
- ddp = (at_ddp_t *)gbuf_rptr(m);
-
- /* access the Zone Name info part of the GetNetInfo Request */
-
- zname = (at_nvestr_t *)(gbuf_rptr(m) + DDP_X_HDR_SIZE + 6);
-
- if (zname->len > ZIP_MAX_ZONE_LENGTH) {
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_s_gni_r: zone len too long l=%d ddplen=%d\n",
- zname->len, DDPLEN_VALUE(ddp)));
- return;
- }
-
-
- if (zname->len)
- ZoneNameProvided = TRUE;
-
- GNIReply[0] = ZIP_NETINFO_REPLY;
- GNIReply[1] = ZIP_ZONENAME_INVALID;
-
- /* check if we are the originator is in the cable range for this interface */
-
- if ((NET_VALUE(ddp->src_net) < CableStart || NET_VALUE(ddp->src_net) > CableStop) &&
- (NET_VALUE(ddp->dst_net) == 0 && ddp->dst_node == 0xff)) {
- RequestIsBroadcasted = TRUE;
- }
- Entry = rt_blookup(CableStop);
-
- if (Entry != NULL && RT_ALL_ZONES_KNOWN(Entry)) { /* this net is well known... */
-
- GNIReply[2] = (Entry->NetStart & 0xFF00) >> 8;
- GNIReply[3] = (Entry->NetStart & 0x00FF);
- GNIReply[4] = (Entry->NetStop & 0xFF00) >> 8;
- GNIReply[5] = (Entry->NetStop & 0x00FF);
-
- /* copy the zone name found in the request */
-
- GNIReply[6] = zname->len;
- bcopy(&zname->str, &GNIReply[7], zname->len);
-
-
- if ((znumber = zt_find_zname(zname))) {
-
- if (ZT_ISIN_ZMAP((znumber), Entry->ZoneBitMap)) {
-
- GNIReply[1] = 0; /* Zone Valid */
-
- if ((len = zt_get_zmcast(ifID, zname, &GNIReply[8+zname->len])))
- GNIReply[7+zname->len] = len;
- else {
- GNIReply[1] |= ZIP_USE_BROADCAST;
- GNIReply[7+zname->len] = 0; /* multicast address length */
- }
- packet_length = 8 + zname->len + len;
- }
- }
-
- }
-
- else { /* should not happen, we are supposed to know our net */
- dPrintf(D_M_ZIP, D_L_WARNING, ("zip_s_gni_r: Don't know about our zone infos!!!\n"));
- return;
- }
-
- if (zt_ent_zcount(Entry) == 1)
- GNIReply[1] |= ZIP_ONE_ZONE;
-
- if (GNIReply[1] & ZIP_ZONENAME_INVALID) {
-
- short Index = ifID->ifDefZone;
-
- if (Index <= 0 || Index >= ZT_MAXEDOUT) {
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_s_gni_r: Invalid starting index =%d port%d\n",
- Index, ifID->ifPort));
- return;
- }
-
-
- Index--;
-
- if ((len = zt_get_zmcast(ifID, &ZT_table[Index].Zone, &GNIReply[8+zname->len])))
- GNIReply[7+zname->len] = len;
- else {
- GNIReply[1] |= ZIP_USE_BROADCAST;
- GNIReply[7+zname->len] = 0; /* multicast address length */
- }
-
- packet_length = 7 + zname->len + len;
-
- /* in the case the zone name asked for in the request was invalid, we need
- * to copy the good default zone for this net
- */
-
- GNIReply[packet_length + 1] = ZT_table[Index].Zone.len;
- bcopy(&ZT_table[Index].Zone.str, &GNIReply[packet_length + 2],
- ZT_table[Index].Zone.len);
- packet_length = packet_length +2 + ZT_table[Index].Zone.len;
- }
-
-
- /*
- * we're finally ready to send out the GetNetInfo Reply
- *
- */
-
-
- size = DDP_X_HDR_SIZE + packet_length;
- if ((m_sent = gbuf_alloc(AT_WR_OFFSET+size, PRI_HI)) == NULL) {
- return; /* was return(ENOBUFS); */
- }
-
- gbuf_rinc(m_sent,AT_WR_OFFSET);
- gbuf_wset(m_sent,size);
- ddp_sent = (at_ddp_t *)(gbuf_rptr(m_sent));
-
- /* Prepare the DDP header */
-
- ddp_sent->unused = ddp_sent->hopcount = 0;
- UAS_ASSIGN(ddp->checksum, 0);
- DDPLEN_ASSIGN(ddp_sent, size);
- NET_ASSIGN(ddp_sent->src_net, ifID->ifThisNode.s_net);
- ddp_sent->src_node = ifID->ifThisNode.s_node;
- ddp_sent->src_socket = ZIP_SOCKET;
- ddp_sent->dst_socket = ddp->src_socket;
-
- if (RequestIsBroadcasted) { /* if this was a broadcast, must respond from that */
-
- NET_ASSIGN(ddp_sent->dst_net, 0);
- ddp_sent->dst_node = 0xFF;
- }
- else {
-
- NET_NET(ddp_sent->dst_net, ddp->src_net);
- ddp_sent->dst_node = ddp->src_node;
- }
- ddp_sent->type = DDP_ZIP;
-
- bcopy(&GNIReply, &ddp_sent->data, packet_length);
-
- dPrintf(D_M_ZIP_LOW, D_L_ROUTING,
- ("zip_s_gni_r: send to %d:%d port#%d pack_len=%d\n",
- NET_VALUE(ddp_sent->dst_net), ddp_sent->dst_node,
- ifID->ifPort, packet_length));
- if ((status =
- ddp_router_output(m_sent, ifID, AT_ADDR,
- NET_VALUE(ddp_sent->dst_net), ddp_sent->dst_node, 0))) {
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_s_gni_r: ddp_router_output returns =%d\n", status));
- return; /* was return(status); */
- }
-} /* zip_send_getnetinfo_reply */
-
-
-/*
- * build_ZIP_reply_packet: is used to create and send a DDP packet and use the
- * provided buffer as a ZIP reply. This is used by zip_send_ext_reply_to_query
- * and zip_send_reply_to_query for sending their replies to ZIP queries.
- */
-gbuf_t *prep_ZIP_reply_packet(m, ifID)
- register gbuf_t *m; /* this is the original zip query */
- register at_ifaddr_t *ifID;
-{
- register gbuf_t *m_sent;
- register at_ddp_t *ddp, *src_ddp;
-
- /* access the source Net and Node informations */
-
- src_ddp = (at_ddp_t *)gbuf_rptr(m);
-
- if ((m_sent = gbuf_alloc (AT_WR_OFFSET+1024, PRI_HI)) == NULL) {
- return((gbuf_t *)NULL);
- }
- gbuf_rinc(m_sent,AT_WR_OFFSET);
- gbuf_wset(m_sent,DDP_X_HDR_SIZE);
- ddp = (at_ddp_t *)(gbuf_rptr(m_sent));
-
- /* Prepare the DDP header */
-
- ddp->unused = ddp->hopcount = 0;
- UAS_ASSIGN(ddp->checksum, 0);
-
- NET_ASSIGN(ddp->src_net, ifID->ifThisNode.s_net);
- ddp->src_node = ifID->ifThisNode.s_node;
- ddp->src_socket = ZIP_SOCKET;
-
- ddp->dst_socket = src_ddp->src_socket;
- NET_NET(ddp->dst_net, src_ddp->src_net);
- ddp->dst_node = src_ddp->src_node;
-
- ddp->type = DDP_ZIP;
-
- return(m_sent);
-}
-/*
- * zip_send_ext_reply_to_query: this function deals with ZIP Queries for extended nets.
- * When we recognize an extended net (that might have several zone name associated with
- * it), we send A SEPARATE ZIP reply for that network. This is called from the
- * regular zip_send_reply_to_query, that just deals with non-ext nets.
- */
-
-static void zip_send_ext_reply_to_query(mreceived, ifID, Entry, NetAsked)
- register gbuf_t *mreceived;
- register at_ifaddr_t *ifID;
- RT_entry *Entry; /* info about the network we're looking for */
- u_short NetAsked;
-{
- register gbuf_t *m;
- register at_ddp_t *ddp;
- short i, j, reply_length, Index, zone_count, status;
- u_char *zmap;
- char *ReplyBuff, *ZonesInPacket;
-
- zone_count = zt_ent_zcount(Entry);
- zmap = Entry->ZoneBitMap;
- i = ZT_BYTES -1;
-
-
-newPacket:
-
- if (!(m = prep_ZIP_reply_packet (mreceived, ifID))) {
- return; /* was return(ENOBUFS); */
- }
-
- ddp = (at_ddp_t *)(gbuf_rptr(m));
- ReplyBuff = (char *)(ddp->data);
-
-
- *ReplyBuff++ = 8; /* ZIP function = 8 [extended reply] */
-
- ZonesInPacket= ReplyBuff;
- *ZonesInPacket= 0;
- ReplyBuff ++;
- reply_length = 2; /* 1st byte is ZIP reply code, 2nd is network count */
- j= 0;
-
- /* For all zones, we check if they belong to the map for that Network */
-
- for (; i >= 0; i--) {
-
- /* find the zones defined in this entry bitmap */
-
- if (zmap[i]) {
- for (; j < 8 ; j++)
- if (zmap[i] << j & 0x80) { /* bingo */
-
- Index = i*8 + j; /* zone index in zone table */
-
- if (reply_length + 3 + ZT_table[Index].Zone.len > DDP_DATA_SIZE) {
-
- /* we need to send the packet before, this won't fit... */
-
- zone_count -= *ZonesInPacket;
-
- DDPLEN_ASSIGN(ddp, (reply_length + DDP_X_HDR_SIZE));
- gbuf_winc(m,reply_length);
- if ((status =
- ddp_router_output(m, ifID, AT_ADDR,
- NET_VALUE(ddp->dst_net), ddp->dst_node, 0))) {
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_s_ext_repl: ddp_router_output returns =%d\n",
- status));
- return; /* was return (status); */
- }
-
- goto newPacket;
-
- }
- /* this should fit in this packet, build the NetNumber, ZoneLen,
- * ZoneName triple
- */
-
- if (ZT_table[Index].Zone.len) {
- *ZonesInPacket += 1; /* bump NetCount field */
- *ReplyBuff++ = (NetAsked & 0xFF00) >> 8;
- *ReplyBuff++ = (NetAsked & 0x00FF) ;
- *ReplyBuff++ = ZT_table[Index].Zone.len;
-
- bcopy(&ZT_table[Index].Zone.str, ReplyBuff,
- ZT_table[Index].Zone.len);
-
- ReplyBuff += ZT_table[Index].Zone.len;
- reply_length += ZT_table[Index].Zone.len +3;
- }
-
- }
- }
- j= 0; /* reset the bit count */
- }
-
- /* if we have some zone info in a half-empty packet, send it now.
- * Remember, for extended nets we send *at least* one Reply
- */
-
- if (zone_count) {
- DDPLEN_ASSIGN(ddp, (reply_length + DDP_X_HDR_SIZE));
- gbuf_winc(m,reply_length);
- if ((status =
- ddp_router_output(m, ifID, AT_ADDR,
- NET_VALUE(ddp->dst_net), ddp->dst_node, 0))) {
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_s_ext_reply: ddp_router_output returns =%d\n", status));
- return; /* was return (status); */
- }
- }
- else /* free the buffer not used */
-
- gbuf_freem(m);
-} /* zip_send_ext_reply_to_query */
-
-/*
- * zip_send_reply_to_query: we received a ZIPQuery packet, we need to reply
- * with the right information for the nets requested (if we have
- * the right information.
- */
-static void zip_send_reply_to_query(mreceived, ifID)
- register gbuf_t *mreceived;
- register at_ifaddr_t *ifID;
-{
- register gbuf_t *m;
- register at_ddp_t *ddp = NULL, *ddp_received;
- RT_entry *Entry;
- short i, reply_length, Index, status;
- u_char network_count;
- u_short *NetAsked;
- char *ReplyBuff, *ZonesInPacket;
-
- ddp_received = (at_ddp_t *)gbuf_rptr(mreceived);
-
- /* access the number of nets requested in the Query */
- network_count = *((char *)(ddp_received->data) + 1);
- NetAsked = (u_short *)(ddp_received->data + 2);
-
- /* check the validity of the Query packet */
-
- if (DDPLEN_VALUE(ddp_received) !=
- (2 + network_count * 2 + DDP_X_HDR_SIZE)) {
-
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_s_reply_to_q: bad length netcount=%d len=%d\n",
- network_count, DDPLEN_VALUE(ddp)));
- return; /* was return(1); */
- }
-
- /* walk the Query Network list */
- /* we want to build a response with the network number followed by the zone name
- * length and the zone name. If there is more than one zone per network asked,
- * we repeat the network number and stick the zone length and zone name.
- * We need to be carefull with the max DDP size for data. If we see that a new
- * NetNum, ZoneLen, ZoneName sequence won't fit, we send the previous packet and
- * begin to build a new one.
- */
-
-newPacket:
-
- if (!(m = prep_ZIP_reply_packet (mreceived, ifID))) {
- return; /* was return(ENOBUFS); */
- }
-
- ddp = (at_ddp_t *)(gbuf_rptr(m));
- ReplyBuff = (char *)(ddp->data);
-
- *ReplyBuff++ = 2; /* ZIP function = 2 [Non extended reply] */
- ZonesInPacket = ReplyBuff;
- *ZonesInPacket = 0;
- ReplyBuff++;
- reply_length = 2; /* 1st byte is ZIP reply code, 2nd is network count */
-
- for (i = 0 ; i < network_count ; i ++, NetAsked++) {
- Entry = rt_blookup(ntohs(*NetAsked));
-
- if (Entry != NULL && ((Entry->EntryState & 0x0F) >= RTE_STATE_SUSPECT) &&
- RT_ALL_ZONES_KNOWN(Entry)) { /* this net is well known... */
-
- if (Entry->NetStart == 0) { /* asking for a NON EXTENDED network */
-
- if ( (Index = zt_ent_zindex(Entry->ZoneBitMap)) == 0)
- continue;
-
- Index--;
-
- if (reply_length + 3 + ZT_table[Index].Zone.len > DDP_DATA_SIZE) {
-
- /* we need to send the packet before, this won't fit... */
-
- DDPLEN_ASSIGN(ddp, (reply_length + DDP_X_HDR_SIZE));
- gbuf_winc(m,reply_length);
-
- if ((status =
- ddp_router_output(m, ifID, AT_ADDR,
- NET_VALUE(ddp->dst_net),
- ddp->dst_node, 0))) {
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_s_reply: ddp_router_output returns =%d\n",
- status));
- return; /* was return (status); */
- }
-
- /* this is not nice, I know, but we reenter the loop with
- * a packet is sent with the next network field in the Query
- */
-
- network_count -= i;
- goto newPacket;
-
- }
-
- /* this should fit in this packet, build the NetNumber, ZoneLen,
- * ZoneName triple
- */
-
- if (ZT_table[Index].Zone.len) {
- ZonesInPacket += 1; /* bump NetCount field */
- *ReplyBuff++ = (*NetAsked & 0xFF00) >> 8;
- *ReplyBuff++ = (*NetAsked & 0x00FF) ;
- *ReplyBuff++ = ZT_table[Index].Zone.len;
- bcopy(&ZT_table[Index].Zone.str, ReplyBuff,
- ZT_table[Index].Zone.len);
-
- ReplyBuff += ZT_table[Index].Zone.len;
-
- reply_length += ZT_table[Index].Zone.len + 3;
-
-
- }
-
-
- }
- else { /* extended network, check for multiple zone name attached
- * and build a separate packet for each extended network requested
- */
-
- zip_send_ext_reply_to_query(mreceived, ifID, Entry, ntohs(*NetAsked));
-
- }
- }
- }
-
- /* If we have a non extended packet (code 2) with some stuff in it,
- * we need to send it now
- */
-
- if ( reply_length > 2) {
- DDPLEN_ASSIGN(ddp, (reply_length + DDP_X_HDR_SIZE));
- gbuf_winc(m,reply_length);
- if ((status =
- ddp_router_output(m, ifID, AT_ADDR,
- NET_VALUE(ddp->dst_net),
- ddp->dst_node, 0))) {
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_send_reply: ddp_router_output returns =%d\n", status));
- return; /* was return (status); */
- }
- }
- else /* free the buffer not used */
- gbuf_freem(m);
-} /* zip_send_reply_to_query */
-
-/***********************************************************************
- * zip_router_input()
- *
- **********************************************************************/
-
-void zip_router_input (m, ifID)
- register gbuf_t *m;
- register at_ifaddr_t *ifID;
-{
- register at_ddp_t *ddp;
- register at_atp_t *atp;
- register at_zip_t *zip;
- u_char user_bytes[4];
- register u_short user_byte;
-
- /* variables for ZipNotify processing */
- register char old_zone_len;
- register char new_zone_len;
- register char *old_zone;
- char *new_zone;
-
- if (gbuf_type(m) != MSG_DATA) {
- /* If this is a M_ERROR message, DDP is shutting down,
- * nothing to do here...If it's something else, we don't
- * understand what it is
- */
- dPrintf(D_M_ZIP, D_L_WARNING, ("zip_router_input: not an M_DATA message\n"));
- gbuf_freem(m);
- return;
- }
-
- if (!ifID) {
- dPrintf(D_M_ZIP, D_L_WARNING, ("zip_router_input: BAD ifID\n"));
- gbuf_freem(m);
- return;
- }
-
- /*
- * The ZIP listener receives two types of requests:
- *
- * ATP requests: GetZoneList, GetLocalZone, or GetMyZone
- * ZIP requests: Netinfo, Query, Reply, takedown, bringup
- */
-
- ddp = (at_ddp_t *)gbuf_rptr(m);
-
- if (ddp->type == DDP_ZIP) {
- zip = (at_zip_t *)(gbuf_rptr(m) + DDP_X_HDR_SIZE);
- dPrintf(D_M_ZIP_LOW, D_L_INPUT,
- ("zip_input: received a ZIP_DDP command=%d\n",
- zip->command));
- switch (zip->command) {
- case ZIP_QUERY : /* we received a Zip Query request */
- dPrintf(D_M_ZIP, D_L_INPUT,
- ("zip_input: Received a Zip Query in from %d.%d\n",
- NET_VALUE(ddp->src_net), ddp->src_node));
-
- if (!RT_LOOKUP_OKAY(ifID, ddp)) {
- dPrintf(D_M_ZIP, D_L_INPUT,
- ("zip_input:: refused ZIP_QUERY from %d:%d\n",
- NET_VALUE(ddp->src_net), ddp->src_node));
- }
- else
- zip_send_reply_to_query(m, ifID);
- gbuf_freem(m);
- break;
-
- case ZIP_REPLY : /* we received a Zip Query Reply packet */
- case ZIP_EXTENDED_REPLY:
- if (ifID->ifRoutingState == PORT_OFFLINE) {
- dPrintf(D_M_ZIP, D_L_INPUT,
- ("zip_input: Received a Zip Reply in user mode\n"));
- }
- else
- zip_reply_received(m, ifID, zip->command);
- gbuf_freem(m);
- break;
-
- case ZIP_TAKEDOWN :
- /* we received a Zip Takedown packet */
- dPrintf(D_M_ZIP, D_L_WARNING, ("zip_input: Received a Zip takedown!!!\n"));
- gbuf_freem(m);
- break;
-
- case ZIP_BRINGUP :
- /* we received a Zip BringUp packet */
- dPrintf(D_M_ZIP, D_L_WARNING, ("zip_input: Received a Zip BringUp!!!\n"));
- gbuf_freem(m);
- break;
-
- case ZIP_GETNETINFO: /* we received a GetNetInfo request */
- dPrintf(D_M_ZIP, D_L_INPUT,
- ("zip_input: Received a GetNetInfo Req in from %d.%d\n",
- NET_VALUE(ddp->src_net), ddp->src_node));
- if (RT_LOOKUP_OKAY(ifID, ddp)) {
- dPrintf(D_M_ZIP, D_L_OUTPUT,
- ("zip_input: we, as node %d:%d send GNI reply to %d:%d\n",
- ifID->ifThisNode.s_net, ifID->ifThisNode.s_node,
- NET_VALUE(ddp->src_net), ddp->src_node));
- zip_send_getnetinfo_reply(m, ifID);
- }
- gbuf_freem(m);
- break;
-
-
- case ZIP_NETINFO_REPLY :
-
- /* If we are not waiting for a GetNetInfo reply
- * to arrive, this must be a broadcast
- * message for someone else on the zone, so
- * no need to even look at it!
- */
- if (!ROUTING_MODE &&
- ((NET_VALUE(ddp->src_net) != ifID->ifThisNode.s_net) ||
- (ddp->src_node != ifID->ifThisNode.s_node)) && netinfo_reply_pending)
- {
- dPrintf(D_M_ZIP, D_L_INPUT,
- ("zip_input: Received a GetNetInfo Reply from %d.%d\n",
- NET_VALUE(ddp->src_net), ddp->src_node));
- trackrouter(ifID, NET_VALUE(ddp->src_net), ddp->src_node);
- zip_netinfo_reply((at_x_zip_t *)zip, ifID);
- }
-
- gbuf_freem(m);
- break;
-
- case ZIP_NOTIFY :
- /* processing of ZipNotify message : first, change
- * our zone name, then if NIS is open, let NBP demon
- process know of this change...(just forward the
- * Notify packet
- */
- /* First, check if this is really a packet for us */
- old_zone = &zip->data[4];
- if (!zonename_equal(&ifID->ifZoneName,
- (at_nvestr_t *)old_zone)) {
- /* the old zone name in the packet is not the
- * same as ours, so this packet couldn't be
- * for us.
- */
- gbuf_freem(m);
- break;
-
- }
- old_zone_len = *old_zone;
- new_zone_len = zip->data[4 + old_zone_len + 1];
- new_zone = old_zone + old_zone_len;
-
- /* Reset the zone multicast address */
- (void)at_unreg_mcast(ifID, (caddr_t)&ifID->ZoneMcastAddr);
- bzero((caddr_t)&ifID->ZoneMcastAddr, ETHERNET_ADDR_LEN);
-
- /* change the zone name - copy both the length and the string */
- bcopy((caddr_t)new_zone, (caddr_t)&ifID->ifZoneName,
- new_zone_len+1);
-
- /* Send network zone change event and new zone for this interface. */
- atalk_post_msg(ifID->aa_ifp, KEV_ATALK_ZONEUPDATED, 0, &(ifID->ifZoneName));
- atalk_post_msg(ifID->aa_ifp, KEV_ATALK_ZONELISTCHANGED, 0, 0);
-
- /* add the new zone to the list of local zones */
- if (!MULTIPORT_MODE && !DEFAULT_ZONE(&ifID->ifZoneName))
- (void)setLocalZones(&ifID->ifZoneName,
- (ifID->ifZoneName.len+1));
-
- /* Before trying to request our new multicast address,
- * wait a while... someone might have alredy requested
- * it, so we may see some broadcast messages flying
- * by... Set up the structures so that it appears that
- * we have already requested the NetInfo.
- */
- ifID->ifNumRetries = ZIP_NETINFO_RETRIES;
- netinfo_reply_pending = 1;
- ifID->ifGNIScheduled = 1;
- timeout(zip_sched_getnetinfo, (caddr_t) ifID,
- 2*ZIP_TIMER_INT);
-
- gbuf_freem(m);
- break;
- default :
- routing_needed(m, ifID, TRUE);
- break;
- }
- }
- else if (ddp->type == DDP_ATP &&
- RT_LOOKUP_OKAY(ifID, ddp)) {
- if (gbuf_len(m) > DDP_X_HDR_SIZE)
- atp = (at_atp_t *)(gbuf_rptr(m)+DDP_X_HDR_SIZE);
- else
- atp = (at_atp_t *)(gbuf_rptr(gbuf_cont(m)));
-
- /* Get the user bytes in network order */
-
- *((u_long*)user_bytes) = UAL_VALUE(atp->user_bytes);
- user_byte = user_bytes[0]; /* Get the zeroth byte */
-
- dPrintf(D_M_ZIP, D_L_INPUT,
- ("zip_input: received a ZIP_ATP command=%d\n", user_byte));
-
- switch (user_byte) {
- case ZIP_GETMYZONE:
- zip_reply_to_getmyzone(ifID, m);
- gbuf_freem(m);
- break;
-
- case ZIP_GETZONELIST:
- zip_reply_to_getzonelist(ifID, m);
- gbuf_freem(m);
- break;
-
- case ZIP_GETLOCALZONES:
- zip_reply_to_getlocalzones(ifID, m);
- gbuf_freem(m);
- break;
-
- default:
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_input: received unknown ZIP_ATP command=%d\n", user_byte));
- routing_needed(m, ifID, TRUE);
- break;
- }
- } else {
- gbuf_freem(m);
- }
- return;
-} /* zip_router_input */
-
-/***********************************************************************
- * zonename_equal()
- *
- * Remarks :
- *
- **********************************************************************/
-int zonename_equal (zone1, zone2)
- register at_nvestr_t *zone1, *zone2;
-{
- register char c1, c2;
- register int i;
-
- if (zone1->len != zone2->len)
- return(0);
-
- for (i=0; i< (int) zone1->len; i++) {
- c1 = zone1->str[i];
- c2 = zone2->str[i];
- if (c1 >= 'a' && c1 <= 'z')
- c1 += 'A' - 'a';
- if (c2 >= 'a' && c2 <= 'z')
- c2 += 'A' - 'a';
- if (c1 & 0x80)
- c1 = upshift8(c1);
- if (c2 & 0x80)
- c2 = upshift8(c2);
- if (c1 != c2)
- return(0);
- }
- return(1);
-}
-
-
-char upshift8 (ch)
- register char ch;
-{
- register int i;
-
- static unsigned char lower_case[] =
- {0x8a, 0x8c, 0x8d, 0x8e, 0x96, 0x9a, 0x9f, 0xbe,
- 0xbf, 0xcf, 0x9b, 0x8b, 0x88, 0};
- static unsigned char upper_case[] =
- {0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0xae,
- 0xaf, 0xce, 0xcd, 0xcc, 0xcb, 0};
-
- for (i=0; lower_case[i]; i++)
- if (ch == lower_case[i])
- return (upper_case[i]);
-
- return(ch);
-}
-
-
-/***********************************************************************
- * zip_netinfo_reply ()
- *
- * Remarks :
- *
- **********************************************************************/
-static void zip_netinfo_reply (netinfo, ifID)
- register at_x_zip_t *netinfo;
- register at_ifaddr_t *ifID;
-{
- u_char mcast_len;
- register at_net_al this_net;
- char *default_zone;
- register u_char zone_name_len;
-
- /* There may be multiple zones on the cable.... we need to
- * worry about whether or not this packet is addressed
- * to us.
- */
- /* *** Do we really need to check this? *** */
- if (!zonename_equal((at_nvestr_t *)netinfo->data, &ifID->ifZoneName)) {
- dPrintf(D_M_ZIP, D_L_INFO, ("zip_netinfo_reply, !zonename_equal!!!"));
- return;
- }
-
- ifID->ifThisCableStart = NET_VALUE(netinfo->cable_range_start);
- ifID->ifThisCableEnd = NET_VALUE(netinfo->cable_range_end);
- dPrintf(D_M_ZIP, D_L_OUTPUT, ("Zip_netinfo_reply: Set cable to %d-%d\n",
- ifID->ifThisCableStart, ifID->ifThisCableEnd));
-
- /* The packet is in response to our request */
- ifID->ifGNIScheduled = 0;
- untimeout (zip_sched_getnetinfo, (caddr_t) ifID);
- netinfo_reply_pending = 0;
- zone_name_len = netinfo->data[0];
- mcast_len = netinfo->data[zone_name_len + 1];
-
- if (netinfo->flags & ZIP_ZONENAME_INVALID) {
- /* copy out the default zone name from packet */
- default_zone = (char *)&netinfo->data[zone_name_len+1+mcast_len+1];
- bcopy((caddr_t)default_zone, (caddr_t)&ifID->ifZoneName,
- *default_zone + 1);
- }
-
- /* add the new zone to the list of local zones */
- if (!MULTIPORT_MODE && !DEFAULT_ZONE(&ifID->ifZoneName))
- (void)setLocalZones(&ifID->ifZoneName, (ifID->ifZoneName.len+1));
-
- /* get the multicast address out of the GetNetInfo reply, if there is one */
- if (!(netinfo->flags & ZIP_USE_BROADCAST)) {
- /* If ZIP_USE_BROADCAST is set, we will use the cable
- broadcast address as the multicast address, however
- the cable multicast address has already been registered.
- */
- /* This packet contains a multicast address, so
- * send to elap to register it.
- */
- if (FDDI_OR_TOKENRING(ifID->aa_ifp->if_type))
- ddp_bit_reverse(&netinfo->data[zone_name_len + 2]);
-
- bcopy((caddr_t)&netinfo->data[zone_name_len + 2],
- (caddr_t)&ifID->ZoneMcastAddr, ETHERNET_ADDR_LEN);
- (void)at_reg_mcast(ifID, (caddr_t)&ifID->ZoneMcastAddr);
- }
-
- this_net = ifID->ifThisNode.s_net;
- if ((this_net >= ifID->ifThisCableStart) &&
- (this_net <= ifID->ifThisCableEnd)) {
- /* ThisNet is in the range of valid network numbers
- * for the cable. Do nothing.
- */
- } else {
- /* ThisNet is not in the range of valid network
- * numbers for the cable. This may be either because
- * the chosen number was from start-up range, or
- * because the user has a misconception of where the
- * machine is!! Since ThisCableRange is set up, next
- * time aarp is invoked, it would select address in
- * the right range.
- */
-
- /* to reset initial_net and initial_node to zero, so
- * that aarp is forced to choose new values
- */
- ifID->initial_addr.s_net = 0;
- ifID->initial_addr.s_node = 0;
-
- /* Wake up elap_online sleeping on this interface. */
- ZIPwakeup(ifID, ZIP_RE_AARP);
- return;
- }
-
- if (!ifID->startup_inprogress) {
- /* Send event with zone info. This covers case where we get zone info
- after startup. During startup this event is sent from ZIPwakeup. */
- atalk_post_msg(ifID->aa_ifp, KEV_ATALK_ZONEUPDATED, 0, &(ifID->ifZoneName));
- }
-
- ZIPwakeup(ifID, 0); /* no error */
- return;
-} /* zip_netinfo_reply */
-
-
-/**********************************************************************
- * zip_control()
- *
- **********************************************************************/
-int zip_control (ifID, control)
- register at_ifaddr_t *ifID;
- int control;
-{
- dPrintf(D_M_ZIP, D_L_INFO, ("zip_control called port=%d control=%d\n",
- ifID->ifPort, control));
- switch (control) {
- case ZIP_ONLINE :
- case ZIP_LATE_ROUTER :
- if (!ifID->ifGNIScheduled) {
- ifID->ifNumRetries = 0;
- /* Get the desired zone name from elap and put it in
- * ifID for zip_getnetinfo() to use.
- */
- if (ifID->startup_zone.len)
- ifID->ifZoneName = ifID->startup_zone;
- zip_getnetinfo(ifID);
- }
- break;
- case ZIP_NO_ROUTER :
- ifID->ifZoneName.len = 1;
- ifID->ifZoneName.str[0] = '*';
- ifID->ifZoneName.str[1] = '\0';
-
- /* Send event with zone info. */
- atalk_post_msg(ifID->aa_ifp, KEV_ATALK_ZONEUPDATED, 0, &(ifID->ifZoneName));
-
- break;
- default :
- break;
- }
- return (0);
-}
-
-/* locked version of zip_getnetinfo */
-static void
-zip_getnetinfo_locked(void *arg)
-{
- at_ifaddr_t *ifID;
-
- atalk_lock();
- if (arg != NULL) { // make sure it hasn't been closed
- ifID = (at_ifaddr_t *)arg;
- ifID->ifGNIScheduled = 0;
- zip_getnetinfo(ifID);
- }
- atalk_unlock();
-}
-
-
-/**********************************************************************
- * zip_getnetinfo()
- *
- **********************************************************************/
-static void zip_getnetinfo (ifID)
- register at_ifaddr_t *ifID;
-{
- register at_x_zip_t *zip;
- gbuf_t *m;
- register at_ddp_t *ddp;
- register struct atalk_addr *at_dest;
- register int size;
-
-
- size = DDP_X_HDR_SIZE + ZIP_X_HDR_SIZE + ifID->ifZoneName.len + 1
- + sizeof(struct atalk_addr) + 1;
- if ((m = gbuf_alloc (AT_WR_OFFSET+size, PRI_HI)) == NULL) {
- /* This time, we're unable to allocate buffer to
- * send a packet out, so schedule to send a packet
- * out later, and exit.
- */
- dPrintf(D_M_ZIP, D_L_WARNING, ("zip_getnetinfo: no buffer, call later port=%d\n",
- ifID->ifPort));
- ifID->ifGNIScheduled = 1;
- timeout (zip_getnetinfo_locked, (caddr_t) ifID, ZIP_TIMER_INT/10);
- return;
- }
-
- gbuf_rinc(m,AT_WR_OFFSET);
- gbuf_wset(m,0);
- *(u_char *)gbuf_rptr(m) = AT_ADDR;
- at_dest = (struct atalk_addr *)(gbuf_rptr(m) + 1);
- ddp = (at_ddp_t *)(gbuf_rptr(m) + sizeof(struct atalk_addr) + 1);
- zip = (at_x_zip_t *)ddp->data;
- gbuf_winc(m,size);
-
- zip->command = ZIP_GETNETINFO;
- zip->flags = 0;
- NET_ASSIGN(zip->cable_range_start, 0);
- NET_ASSIGN(zip->cable_range_end, 0);
- if (ifID->ifZoneName.len) /* has to match reply exactly */
- bcopy((caddr_t)&ifID->ifZoneName, (caddr_t)zip->data,
- ifID->ifZoneName.len + 1);
- else
- zip->data[0] = 0; /* No zone name is availbale */
-
- /* let the lap fields be uninitialized, 'cause it doesn't
- * matter.
- */
- DDPLEN_ASSIGN(ddp, (size - (sizeof(struct atalk_addr) + 1)));
- UAS_ASSIGN(ddp->checksum, 0);
- ddp->hopcount = ddp->unused = 0;
- NET_ASSIGN(ddp->dst_net, 0); /* cable-wide broadcast */
- NET_ASSIGN(ddp->src_net, ifID->ifThisNode.s_net);
- /* By this time, AARP is done */
-
- ddp->dst_node = 0xff;
- ddp->src_node = ifID->ifThisNode.s_node;
- ddp->dst_socket = ZIP_SOCKET;
- ddp->src_socket = ZIP_SOCKET;
- ddp->type = DDP_ZIP;
-
- at_dest->atalk_unused = 0;
- NET_NET(at_dest->atalk_net, ddp->dst_net);
- at_dest->atalk_node = ddp->dst_node;
-
- dPrintf(D_M_ZIP, D_L_INPUT, ("zip_getnetinfo: called for port=%d\n",
- ifID->ifPort));
-
- if (elap_dataput(m, ifID, 0, NULL)) {
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_getnetinfo: error sending zip_getnetinfo\n"));
- return;
- }
-
- ifID->ifNumRetries++;
- netinfo_reply_pending = 1;
- ifID->ifGNIScheduled = 1;
- timeout (zip_sched_getnetinfo, (caddr_t) ifID, ZIP_TIMER_INT);
-} /* zip_getnetinfo */
-
-
-/**********************************************************************
- * zip_sched_getnetinfo()
- *
- **********************************************************************/
-
-void zip_sched_getnetinfo(void *arg)
-{
- register at_ifaddr_t *ifID = (at_ifaddr_t *)arg;
-
- atalk_lock();
-
- ifID->ifGNIScheduled = 0;
-
- if (ifID->ifNumRetries >= ZIP_NETINFO_RETRIES) {
- /* enough packets sent.... give up! */
- /* we didn't get any response from the net, so
- * assume there's no router around and the given
- * zone name, if any, is not valid. Change the
- * zone name to "*".
- */
- ifID->ifZoneName.len = 1;
- ifID->ifZoneName.str[0] = '*';
- ifID->ifZoneName.str[1] = '\0';
- /* Should NBP be notified of this "new" zone name?? */
- netinfo_reply_pending = 0;
-
- ifID->ifRouterState = NO_ROUTER;
- ifID->ifARouter.s_net = 0;
- ifID->ifARouter.s_node = 0;
-
- dPrintf(D_M_ZIP, D_L_INFO, ("zip_sched_getnetinfo: Reset Cable Range\n"));
-
- ifID->ifThisCableStart = DDP_MIN_NETWORK;
- ifID->ifThisCableEnd = DDP_MAX_NETWORK;
-
- if (ifID->ifState == LAP_ONLINE_FOR_ZIP)
- ZIPwakeup (ifID, 0); /* no error */
- } else
- zip_getnetinfo(ifID);
-
- atalk_unlock();
-}
-
-
-/**********************************************************************
- * zip_type_packet()
- *
- * Remarks:
- * This routine checks whether or not the packet contained in "m"
- * is an (outgoing) ZIP packet. If not, it returns 0. If it is a
- * ZIP packet, it returns the ZIP packet type (ZIP command). "m"
- * points to a packet with extended DDP header. The rest of the
- * DDP data may or may not be in the first gbuf.
- *
- **********************************************************************/
-int zip_type_packet (m)
- register gbuf_t *m;
-{
- register at_atp_t *atp;
- register at_ddp_t *ddp;
- register at_zip_t *zip;
- u_char user_bytes[4];
- register int user_byte;
-
- ddp = (at_ddp_t *)gbuf_rptr(m);
- if (ddp->dst_socket == ZIP_SOCKET) {
- switch (ddp->type) {
- case DDP_ZIP :
- if (gbuf_len(m) > DDP_X_HDR_SIZE)
- zip = (at_zip_t *)(gbuf_rptr(m)
- + DDP_X_HDR_SIZE);
- else
- zip=(at_zip_t *)(gbuf_rptr(gbuf_cont(m)));
- return ((int)zip->command);
- case DDP_ATP :
- if (gbuf_len(m) > DDP_X_HDR_SIZE)
- atp = (at_atp_t *)(gbuf_rptr(m)+DDP_X_HDR_SIZE);
- else
- atp = (at_atp_t *)(gbuf_rptr(gbuf_cont(m)));
- /* Get the user bytes in network order */
- *((u_long*)user_bytes) = UAL_VALUE(atp->user_bytes);
- user_byte = user_bytes[0]; /* Get the zeroth byte */
- if ((user_byte == ZIP_GETMYZONE) ||
- (user_byte == ZIP_GETZONELIST) ||
- (user_byte == ZIP_GETLOCALZONES))
- return (user_byte);
- else
- return (0);
- default :
- return (0);
- }
- } else
- return (0);
-}
-
-/**********************************************************************
- * zip_handle_getmyzone()
- *
- * Remarks:
- * Routine to handle ZIP GetMyZone request locally. It generates
- * a phony response to the outgoing ATP request and sends it up.
- *
- * 07/12/94 : remark2 only called from ddp.c / ddp_output
- * should only be called from the home port, but
- * when we are a router we should know the infos for all
- * anyway, so reply locally with what we have in stock...
- *
- **********************************************************************/
-
-int zip_handle_getmyzone(ifID, m)
- register at_ifaddr_t *ifID;
- register gbuf_t *m;
-{
- at_atp_t *atp;
- register at_ddp_t *ddp;
- register at_ddp_t *r_ddp;
- register at_atp_t *r_atp;
- gbuf_t *rm; /* reply message */
- register int size;
- u_long ulongtmp;
-
- dPrintf(D_M_ZIP, D_L_INFO,
- ("zip_handle_getmyzone: local reply for port=%d\n",
- ifID->ifPort));
-
- size = DDP_X_HDR_SIZE + ATP_HDR_SIZE + 1 + ifID->ifZoneName.len;
- /* space for two headers and the zone name */
- if ((rm = gbuf_alloc(AT_WR_OFFSET+size, PRI_HI)) == NULL) {
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_handle_getmyzone: no buffer, port=%d\n",
- ifID->ifPort));
- return (ENOBUFS);
- }
-
- gbuf_rinc(rm,AT_WR_OFFSET);
- gbuf_wset(rm,0);
- r_ddp = (at_ddp_t *)(gbuf_rptr(rm));
- r_atp = (at_atp_t *)r_ddp->data;
- gbuf_winc(rm,size);
-
- ddp = (at_ddp_t *)gbuf_rptr(m);
- if (gbuf_len(m) > DDP_X_HDR_SIZE)
- atp = (at_atp_t *)(gbuf_rptr(m) + DDP_X_HDR_SIZE);
- else
- atp = (at_atp_t *)(gbuf_rptr(gbuf_cont(m)));
-
- /* fill up the ddp header for reply */
- DDPLEN_ASSIGN(r_ddp, size);
- r_ddp->hopcount = r_ddp->unused = 0;
- UAS_ASSIGN(r_ddp->checksum, 0);
- NET_ASSIGN(r_ddp->dst_net, ifID->ifThisNode.s_net);
- NET_NET(r_ddp->src_net, ddp->dst_net);
- r_ddp->dst_node = ifID->ifThisNode.s_node;
- r_ddp->src_node = ddp->dst_node;
- r_ddp->dst_socket = ddp->src_socket;
- r_ddp->src_socket = ZIP_SOCKET;
- r_ddp->type = DDP_ATP;
-
- /* fill up the atp header */
- r_atp->cmd = ATP_CMD_TRESP;
- r_atp->xo = 0;
- r_atp->eom = 1;
- r_atp->sts = 0;
- r_atp->xo_relt = 0;
- r_atp->bitmap = 0;
- UAS_UAS(r_atp->tid, atp->tid);
- ulongtmp = 1;
- UAL_ASSIGN_HTON(r_atp->user_bytes, ulongtmp); /* no of zones */
-
- /* fill up atp data part */
- bcopy((caddr_t) &ifID->ifZoneName, (caddr_t) r_atp->data, ifID->ifZoneName.len+1);
-
- /* all set to send the packet back up */
-
- timeout(send_phony_reply, (caddr_t) rm, HZ/20);
- return (0);
-}
-
-static void
-send_phony_reply(arg)
- void *arg;
-{
- gbuf_t *rm = (gbuf_t *)arg;
-
- atalk_lock();
- ddp_input(rm, ifID_home);
- atalk_unlock();
-
- return;
-}
-
-
-/*
- * zip_prep_query_packet: build the actual ddp packet for the zip query
- */
-
-gbuf_t *zip_prep_query_packet(ifID, RouterNet, RouterNode)
- at_ifaddr_t *ifID;
- at_net_al RouterNet; /* we want to send the Zip Query to that router */
- at_node RouterNode;
-{
-
- register gbuf_t *m;
- register at_ddp_t *ddp;
-
- if ((m = gbuf_alloc (AT_WR_OFFSET+1024, PRI_HI)) == NULL) {
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_send_query_packet: no buffer, port=%d\n",
- ifID->ifPort));
- return((gbuf_t *)NULL);
- }
- gbuf_rinc(m,AT_WR_OFFSET);
- gbuf_wset(m,0);
-
- ddp = (at_ddp_t *)(gbuf_rptr(m));
-
- /* Prepare the DDP header */
-
- ddp->unused = ddp->hopcount = 0;
- UAS_ASSIGN(ddp->checksum, 0);
- NET_ASSIGN(ddp->src_net, ifID->ifThisNode.s_net);
- ddp->src_node = ifID->ifThisNode.s_node;
- ddp->src_socket = ZIP_SOCKET;
-
- ddp->dst_socket = ZIP_SOCKET;
- NET_ASSIGN(ddp->dst_net, RouterNet);
- ddp->dst_node = RouterNode;
-
- ddp->type = DDP_ZIP;
-
- return (m);
-} /* zip_prep_query_packet */
-
-
-/*
- * zip_send_queries: this function send queries for the routing table entries that
- * need to know their zones. It scans the routing table for entries with unknown
- * zones and build Query packets accordingly.
- * Note: this is called on a per port basis.
- */
-
-void zip_send_queries(ifID, RouterNet, RouterNode)
- register at_ifaddr_t *ifID;
- at_net_al RouterNet; /* we want to send the Zip Query to that router */
- at_node RouterNode;
-{
- RT_entry *Entry = &RT_table[0];
- register gbuf_t *m;
- register at_ddp_t *ddp;
- int status;
- short Query_index, EntryNumber = 0 ;
- register u_char port = ifID->ifPort;
- char *QueryBuff, *ZoneCount;
- short zip_sent = FALSE;
-
-newPacket:
-
- if (!(m = zip_prep_query_packet(ifID, RouterNet, RouterNode))) {
- return; /* was return (ENOBUFS); */
- }
-
- ddp = (at_ddp_t *)(gbuf_rptr(m));
- QueryBuff = (char *)ddp->data;
-
- *QueryBuff++ = ZIP_QUERY;
- ZoneCount = QueryBuff; /* network count */
- *ZoneCount = 0;
- QueryBuff++;
- Query_index = 2;
-
-
- while (EntryNumber < RT_maxentry) {
-
- /* scan the table, and build the packet with the right entries:
- * - entry in use and on the right Port
- * - with unknwon zones and in an active state
- * - talking to the right router
- */
-
- if ((Query_index) > 2*254 +2) {
-
- /* we need to send the packet now, but we can't have more than 256
- * requests for networks: the Netcount field is a 8bit in the zip query
- * packet format as defined in Inside Atalk
- */
-
- dPrintf(D_M_ZIP_LOW, D_L_OUTPUT,
- ("zip_send_query: FULL query for %d nets on port#%d.(len=%d)\n",
- *ZoneCount, port, Query_index));
- zip_sent = TRUE;
-
- gbuf_winc(m,DDP_X_HDR_SIZE + Query_index);
- DDPLEN_ASSIGN(ddp, (DDP_X_HDR_SIZE + Query_index));
-
- if ((status =
- ddp_router_output(m, ifID, AT_ADDR,
- RouterNet, RouterNode, 0))) {
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_send_query: ddp_router_output returns =%d\n", status));
- return; /* was return (status); */
- }
-
- goto newPacket;
- }
-
-
- if (((Entry->EntryState & 0x0F) >= RTE_STATE_SUSPECT) &&
- (Entry->NetStop) && (Entry->NetPort == port) &&
- (!RT_ALL_ZONES_KNOWN(Entry))){
-
- /* we're ready to had that to our list of stuff to send */
-
- if (Entry->NetStart) { /* extended net*/
-
- *QueryBuff++ = (Entry->NetStart & 0xFF00) >> 8;
- *QueryBuff++ = (Entry->NetStart & 0x00FF);
-
- }
- else {
- *QueryBuff++ = (Entry->NetStop & 0xFF00) >> 8;
- *QueryBuff++ = (Entry->NetStop & 0x00FF);
- }
-
- Query_index += 2;
- *ZoneCount += 1;/* bump the number of network requested */
-
- }
-
- Entry++;
- EntryNumber++;
-
- }
-
- dPrintf(D_M_ZIP_LOW, D_L_OUTPUT,
- ("zip_send_query: query for %d nets on port#%d.(len=%d)\n",
- *ZoneCount, port, Query_index));
-
- if (*ZoneCount) { /* non-full Query needs to be sent */
- zip_sent = TRUE;
- gbuf_winc(m,DDP_X_HDR_SIZE + Query_index);
- DDPLEN_ASSIGN(ddp, (DDP_X_HDR_SIZE + Query_index));
-
- if ((status =
- ddp_router_output(m, ifID, AT_ADDR,
- RouterNet, RouterNode, 0))) {
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_send_query: ddp_router_output returns =%d\n",
- status));
- return; /* was return (status); */
- }
- }
- else
- gbuf_freem(m);
-
- if (!zip_sent) /* we didn't need to send anything for that port */
- ifID->ifZipNeedQueries = 0;
-} /* zip_send_queries */
-
-/* zip_reply_received: we recieved the reply to one of our query, update the
- * zone bitmap and stuffs with was we received.
- * we receive two types of replies: non extended and extended.
- * For extended replies, the network count is the Total of zones for that net.
- */
-int
-zip_reply_received(m, ifID, reply_type)
- register gbuf_t *m;
- register at_ifaddr_t *ifID;
- int reply_type;
-{
- register at_nvestr_t *zname;
- RT_entry *Entry = &RT_table[0];
- register at_ddp_t *ddp;
- at_net_al Network;
- u_short payload_len, result;
- u_char network_count;
- char *PacketPtr;
-
- ddp = (at_ddp_t *)gbuf_rptr(m);
-
- /* access the number of nets provided in the ZIP Reply */
-
- network_count = ntohs(*(u_char *)(gbuf_rptr(m) + DDP_X_HDR_SIZE + 1));
-
- PacketPtr = (char *)(gbuf_rptr(m) + DDP_X_HDR_SIZE + 2);
-
- payload_len = DDPLEN_VALUE(ddp) - (DDP_X_HDR_SIZE + 2);
-
- dPrintf(D_M_ZIP_LOW, D_L_INPUT, ("zip_reply_received from %d:%d type=%d netcount=%d\n",
- NET_VALUE(ddp->src_net), ddp->src_node, reply_type, network_count));
-
-
- while (payload_len > 0 && network_count >0) {
-
- Network = ntohs(*(at_net_al *)PacketPtr);
- PacketPtr += 2;
- zname = (at_nvestr_t *)PacketPtr;
- if (payload_len)
- payload_len = payload_len -(zname->len + 3);
-
- if (zname->len <= 0) { /* not valid, we got a problem here... */
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_reply_received: Problem zlen=0 for net=%d from %d:%d type=%d netcnt=%d\n",
- Network, NET_VALUE(ddp->src_net), ddp->src_node, reply_type, network_count));
- payload_len =0;
- continue;
- }
-
-
- Entry = rt_blookup(Network);
-
- if (Entry != NULL) {
-
- if (Entry->EntryState >= RTE_STATE_SUSPECT) {
-
- result = zt_add_zonename(zname);
-
- if (result == ZT_MAXEDOUT) {
-
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_reply_received: ZTable full from %d:%d on zone '%s'\n",
- NET_VALUE(ddp->src_net), ddp->src_node, zname->str));
- ErrorZIPoverflow = 1;
- return(1);
- }
-
- zt_set_zmap(result, Entry->ZoneBitMap);
-
- RT_SET_ZONE_KNOWN(Entry);
-
- }
- else {
- dPrintf(D_M_ZIP, D_L_INPUT,
- ("zip_reply_received: entry %d-%d not updated, cause state=%d\n",
- Entry->NetStart, Entry->NetStop, Entry->EntryState));
- }
- }
- else {
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_reply_received: network %d not found in RT\n", Network));
- }
-
-
- /* now bump the PacketPtr pointer */
- PacketPtr += zname->len + 1;
- network_count--;
- }
-
- if ((reply_type == ZIP_REPLY) && network_count > 0) {
-#if DEBUG
- if (Entry)
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_reply_received: Problem decoding zone (after net:%d-%d)\n",
- Entry->NetStart, Entry->NetStop));
-#endif
- ifID->ifZipNeedQueries = 1;
- }
- else {
- ifID->ifZipNeedQueries = 0;
-#if DEBUG
- if (Entry)
- dPrintf(D_M_ZIP_LOW, D_L_INFO,
- ("zip_reply_received: entry %d-%d all zones known\n",
- Entry->NetStart, Entry->NetStop));
-#endif
- }
-
- return 0;
-}
-
-/*
- * zip_reply_to_getmyzone: replies to ZIP GetMyZone received from the Net
- */
-
-static void zip_reply_to_getmyzone (ifID, m)
- register at_ifaddr_t *ifID;
- register gbuf_t *m;
-{
- at_atp_t *atp;
- register at_ddp_t *ddp;
- register at_ddp_t *r_ddp;
- register at_atp_t *r_atp;
- register gbuf_t *rm; /* reply message */
- register int size, Index, status;
- char *data_ptr;
- RT_entry *Entry;
- u_long ulongtmp;
-
- size = DDP_X_HDR_SIZE + ATP_HDR_SIZE + 1 + ifID->ifZoneName.len;
- /* space for two headers and the zone name */
- if ((rm = gbuf_alloc(AT_WR_OFFSET+size, PRI_HI)) == NULL) {
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_reply_to_getmyzone: no buffer, port=%d\n", ifID->ifPort));
- return; /* was return (ENOBUFS); */
- }
- gbuf_rinc(rm,AT_WR_OFFSET);
- gbuf_wset(rm,size);
- r_ddp = (at_ddp_t *)(gbuf_rptr(rm));
- r_atp = (at_atp_t *)r_ddp->data;
-
- ddp = (at_ddp_t *)gbuf_rptr(m);
- if (gbuf_len(m) > DDP_X_HDR_SIZE)
- atp = (at_atp_t *)(gbuf_rptr(m) + DDP_X_HDR_SIZE);
- else
- atp = (at_atp_t *)(gbuf_rptr(gbuf_cont(m)));
-
- /* fill up the ddp header for reply */
- DDPLEN_ASSIGN(r_ddp, size);
- r_ddp->hopcount = r_ddp->unused = 0;
- UAS_ASSIGN(r_ddp->checksum, 0);
-
- NET_ASSIGN(r_ddp->src_net, ifID->ifThisNode.s_net);
- NET_NET(r_ddp->dst_net, ddp->src_net);
-
- r_ddp->src_node = ifID->ifThisNode.s_node;
- r_ddp->dst_node = ddp->src_node;
-
- r_ddp->dst_socket = ddp->src_socket;
- r_ddp->src_socket = ZIP_SOCKET;
- r_ddp->type = DDP_ATP;
-
- /* fill up the atp header */
- r_atp->cmd = ATP_CMD_TRESP;
- r_atp->xo = 0;
- r_atp->eom = 1;
- r_atp->sts = 0;
- r_atp->xo_relt = 0;
- r_atp->bitmap = 0;
- UAS_UAS(r_atp->tid, atp->tid);
- ulongtmp = 1;
- UAL_ASSIGN_HTON(r_atp->user_bytes, ulongtmp); /* no of zones */
-
- data_ptr = (char *)r_atp->data;
-
- /*
- * fill up atp data part with the zone name if we can find it...
- */
-
- Entry = rt_blookup(NET_VALUE(ddp->src_net));
- if (Entry != NULL && ((Entry->EntryState & 0x0F) >= RTE_STATE_SUSPECT) &&
- RT_ALL_ZONES_KNOWN(Entry)) { /* this net is well known... */
-
- Index = zt_ent_zindex(Entry->ZoneBitMap) -1;
-
- *data_ptr = ZT_table[Index].Zone.len;
- bcopy((caddr_t) &ZT_table[Index].Zone.str, (caddr_t) ++data_ptr,
- ZT_table[Index].Zone.len);
-
- /* all set to send the packet back up */
- dPrintf(D_M_ZIP_LOW, D_L_OUTPUT,
- ("zip_reply_to_GMZ: ddp_router_output to %d:%d port %d\n",
- NET_VALUE(r_ddp->dst_net), r_ddp->dst_node, ifID->ifPort));
-
- if ((status =
- ddp_router_output(rm, ifID, AT_ADDR,
- NET_VALUE(r_ddp->dst_net), r_ddp->dst_node, 0))) {
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_reply_to_GMZ: ddp_r_output returns =%d\n", status));
- return; /* was return (status); */
- }
- }
- else
- gbuf_freem(rm);
-}
-
-/*
- * zip_reply_to_getzonelist: replies to ZIP GetZoneList requested from the Net
- */
-
-int
-zip_reply_to_getzonelist (ifID, m)
- register at_ifaddr_t *ifID;
- register gbuf_t *m;
-{
- at_atp_t *atp;
- register at_ddp_t *ddp;
- register at_ddp_t *r_ddp;
- register at_atp_t *r_atp;
- register gbuf_t *rm; /* reply message */
- register int size, status;
- register short Index=0, StartPoint, ZLength, PacketLen=0;
- u_long ulongtmp= 0;
- char *Reply;
-
- ddp = (at_ddp_t *)gbuf_rptr(m);
- if (gbuf_len(m) > DDP_X_HDR_SIZE)
- atp = (at_atp_t *)(gbuf_rptr(m) + DDP_X_HDR_SIZE);
- else
- atp = (at_atp_t *)(gbuf_rptr(gbuf_cont(m)));
-
-
- /* space for two headers and the zone name */
-
- if ((rm = gbuf_alloc(AT_WR_OFFSET+1024, PRI_HI)) == NULL) {
- return (ENOBUFS);
- }
-
- gbuf_rinc(rm,AT_WR_OFFSET);
- gbuf_wset(rm,0);
- r_ddp = (at_ddp_t *)(gbuf_rptr(rm));
- r_atp = (at_atp_t *)r_ddp->data;
-
- /* fill up the ddp header for reply */
-
- r_ddp->hopcount = r_ddp->unused = 0;
- UAS_ASSIGN(r_ddp->checksum, 0);
- NET_ASSIGN(r_ddp->src_net, ifID->ifThisNode.s_net);
- NET_NET(r_ddp->dst_net, ddp->src_net);
- r_ddp->src_node = ifID->ifThisNode.s_node;
- r_ddp->dst_node = ddp->src_node;
- r_ddp->dst_socket = ddp->src_socket;
- r_ddp->src_socket = ZIP_SOCKET;
- r_ddp->type = DDP_ATP;
-
- /* fill up the atp header */
-
- r_atp->cmd = ATP_CMD_TRESP;
- r_atp->xo = 0;
- r_atp->eom = 1;
- r_atp->sts = 0;
- r_atp->xo_relt = 0;
- r_atp->bitmap = 0;
- UAS_UAS(r_atp->tid, atp->tid);
-
- Reply = (char *)r_atp->data;
-
- /* get the start index from the ATP request */
-
- StartPoint = (UAL_VALUE_NTOH(atp->user_bytes) & 0xffff) -1;
-
- /* find the next zone to send */
-
- while ((Index < ZT_maxentry) && StartPoint > 0) {
- if (ZT_table[Index].Zone.len)
- StartPoint--;
- Index++;
- }
-
-
- dPrintf(D_M_ZIP_LOW, D_L_OUTPUT, ("zip_reply_to_GZL: Index=%d\n", Index));
- /*
- * fill up atp data part with the zone name if we can find it...
- */
-
- while (Index < ZT_maxentry) {
-
- ZLength = ZT_table[Index].Zone.len;
-
- if (ZT_table[Index].ZoneCount && ZLength) {
-
-
- if (PacketLen + 8 + ZLength+1 > DDP_DATA_SIZE) /* packet full */
- break;
-
- *Reply++ = ZLength;
- bcopy((caddr_t) &ZT_table[Index].Zone.str,
- Reply, ZLength);
- Reply += ZLength;
- PacketLen += ZLength + 1;
- ulongtmp++;
- }
- Index++;
- }
-
- if (Index >= ZT_maxentry) /* this is the end of the list */
-
- ulongtmp += 0x01000000;
-
-
- UAL_ASSIGN_HTON(r_atp->user_bytes, ulongtmp); /* # of zones and flag*/
-
- size = DDP_X_HDR_SIZE + ATP_HDR_SIZE + PacketLen;
- gbuf_winc(rm,size);
- DDPLEN_ASSIGN(r_ddp, size);
-
- /* all set to send the packet back up */
-
- dPrintf(D_M_ZIP_LOW, D_L_OUTPUT,
- ("zip_r_GZL: send packet to %d:%d port %d atp_len =%d\n",
- NET_VALUE(r_ddp->dst_net), r_ddp->dst_node, ifID->ifPort, PacketLen));
-
-
- if ((status= ddp_router_output(rm, ifID, AT_ADDR,
- NET_VALUE(r_ddp->dst_net), r_ddp->dst_node, 0))) {
- dPrintf(D_M_ZIP, D_L_ERROR, ("zip_reply_to_GZL: ddp_router_output returns=%d\n",
- status));
- return (status);
- }
- return (0);
-
-}
-
-/*
- * zip_reply_to_getlocalzones: replies to ZIP GetLocalZones requested from the Net
- */
-
-int zip_reply_to_getlocalzones (ifID, m)
- register at_ifaddr_t *ifID;
- register gbuf_t *m;
-{
- at_atp_t *atp;
- register at_ddp_t *ddp;
- register at_ddp_t *r_ddp;
- register at_atp_t *r_atp;
- register gbuf_t *rm; /* reply message */
- int size, status;
- short Index, Index_wanted, ZLength;
- short i,j, packet_len;
- short zCount, ZoneCount, ZonesInPacket;
- unsigned char *zmap, last_flag = 0;
- RT_entry *Entry;
- char *Reply;
-
- u_long ulongtmp = 0;
-
- Index = Index_wanted = ZLength = i = j = packet_len = zCount = ZoneCount =
- ZonesInPacket = 0;
-
- ddp = (at_ddp_t *)gbuf_rptr(m);
- if (gbuf_len(m) > DDP_X_HDR_SIZE)
- atp = (at_atp_t *)(gbuf_rptr(m) + DDP_X_HDR_SIZE);
- else
- atp = (at_atp_t *)(gbuf_rptr(gbuf_cont(m)));
-
- /* space for two headers and the zone name */
-
- if ((rm = gbuf_alloc(AT_WR_OFFSET+1024, PRI_HI)) == NULL) {
- return (ENOBUFS);
- }
-
- gbuf_rinc(rm,AT_WR_OFFSET);
- gbuf_wset(rm,0);
- r_ddp = (at_ddp_t *)(gbuf_rptr(rm));
- r_atp = (at_atp_t *)r_ddp->data;
-
- Reply = (char *)r_atp->data;
-
-
- /* get the start index from the ATP request */
-
- Index_wanted = (UAL_VALUE_NTOH(atp->user_bytes) & 0xffff) -1;
-
- dPrintf(D_M_ZIP_LOW, D_L_INFO,
- ("zip_r_GLZ: for station %d:%d Index_wanted = %d\n",
- NET_VALUE(ddp->src_net), ddp->src_node, Index_wanted));
-
- Entry = rt_blookup(NET_VALUE(ddp->src_net));
-
- if (Entry != NULL && ((Entry->EntryState & 0x0F) >= RTE_STATE_SUSPECT) &&
- RT_ALL_ZONES_KNOWN(Entry)) { /* this net is well known... */
-
- ZoneCount = zt_ent_zcount(Entry) ;
-
- dPrintf(D_M_ZIP_LOW, D_L_INFO,
- ("zip_reply_GLZ: for %d:%d ZoneCount=%d\n",
- NET_VALUE(ddp->src_net), ddp->src_node, ZoneCount));
-
- zmap = &Entry->ZoneBitMap[0];
-
- /*
- * first of all, we want to find the "first next zone" in the bitmap,
- * to do so, we need to scan the bitmap and add the number of valid
- * zones we find until we reach the next zone to be sent in the reply
- */
-
- if (ZoneCount > Index_wanted) {
-
- ZoneCount -= Index_wanted;
-
- /* find the starting point in the bitmap according to index */
-
- for (i = 0; Index_wanted >= 0 && i < ZT_BYTES; i++)
- if (zmap[i]) {
- if (Index_wanted < 8) {
- /* how many zones in the bitmap byte */
- for (j = 0, zCount =0; j < 8 ; j++)
- if ((zmap[i] << j) & 0x80)
- zCount++;
- if (Index_wanted < zCount) {
- for (j = 0 ; Index_wanted > 0 && j < 8 ; j++)
- if ((zmap[i] << j) & 0x80)
- Index_wanted--;
- break;
- }
- else
- Index_wanted -= zCount;
- }
- else
- for (j = 0 ; j < 8 ; j++)
- if ((zmap[i] << j) & 0x80)
- Index_wanted--;
- }
-
- /*
- * now, we point to the begining of our next zones in the bitmap
- */
-
- while (i < ZT_BYTES) {
-
- if (zmap[i]) {
- for (; j < 8 ; j++)
- if ((zmap[i] << j) & 0x80) {
- Index = i*8 + j; /* get the index in ZT */
-
- ZLength = ZT_table[Index].Zone.len;
-
- if (ZT_table[Index].ZoneCount && ZLength) {
- if (packet_len + ATP_HDR_SIZE + ZLength + 1 >
- DDP_DATA_SIZE)
- goto FullPacket;
-
- *Reply++ = ZLength;
- bcopy((caddr_t) &ZT_table[Index].Zone.str,
- Reply, ZLength);
- Reply += ZLength;
- packet_len += ZLength + 1;
- ZonesInPacket ++;
- dPrintf(D_M_ZIP_LOW, D_L_INFO,
- ("zip_reply_GLZ: add z#%d to packet (l=%d)\n",
- Index, packet_len));
- }
- else {
- dPrintf(D_M_ZIP, D_L_WARNING,
- ("zip_reply_GLZ: no len for index=%d\n",
- Index));
- }
- }
- }
- i++;
- j = 0;
- }
- }
- else /* set the "last flag" bit in the reply */
- last_flag = 1;
- }
- else /* set the "last flag" bit in the reply */
- last_flag = 1;
-
-FullPacket:
-
- if (ZonesInPacket == ZoneCount)
- last_flag = 1;
-
-
- /* fill up the ddp header for reply */
-
- r_ddp->hopcount = r_ddp->unused = 0;
- UAS_ASSIGN(r_ddp->checksum, 0);
-
- NET_ASSIGN(r_ddp->src_net, ifID->ifThisNode.s_net);
- NET_NET(r_ddp->dst_net, ddp->src_net);
-
- r_ddp->src_node = ifID->ifThisNode.s_node;
- r_ddp->dst_node = ddp->src_node;
-
- r_ddp->dst_socket = ddp->src_socket;
- r_ddp->src_socket = ZIP_SOCKET;
- r_ddp->type = DDP_ATP;
-
- /* fill up the atp header */
- r_atp->cmd = ATP_CMD_TRESP;
- r_atp->xo = 0;
- r_atp->eom = 1;
- r_atp->sts = 0;
- r_atp->xo_relt = 0;
- r_atp->bitmap = 0;
- UAS_UAS(r_atp->tid, atp->tid);
- ulongtmp = ((last_flag << 24) & 0xFF000000) + ZonesInPacket; /* # of zones and flag*/
- UAL_ASSIGN_HTON(r_atp->user_bytes, ulongtmp);
- size = DDP_X_HDR_SIZE + ATP_HDR_SIZE + packet_len;
- gbuf_winc(rm,size);
- DDPLEN_ASSIGN(r_ddp, size);
-
- /* all set to send the packet back up */
-
- dPrintf(D_M_ZIP_LOW, D_L_OUTPUT,
- ("zip_r_GLZ: send packet to %d:%d port %d atp_len =%d\n",
- NET_VALUE(r_ddp->dst_net), r_ddp->dst_node, ifID->ifPort, packet_len));
-
- if ((status= ddp_router_output(rm, ifID, AT_ADDR,
- NET_VALUE(r_ddp->dst_net), r_ddp->dst_node, 0))) {
- dPrintf(D_M_ZIP, D_L_ERROR,
- ("zip_reply_to_GLZ: ddp_router_output returns =%d\n",
- status));
- return (status);
- }
- return (0);
-} /* zip_reply_to_getlocalzones */
-
-int regDefaultZone(ifID)
- at_ifaddr_t *ifID;
-{
- char data[ETHERNET_ADDR_LEN];
-
- if (!ifID)
- return(-1);
-
- zt_get_zmcast(ifID, &ifID->ifZoneName, data);
- if (FDDI_OR_TOKENRING(ifID->aa_ifp->if_type))
- ddp_bit_reverse((unsigned char *)data);
- bcopy((caddr_t)data, (caddr_t)&ifID->ZoneMcastAddr, ETHERNET_ADDR_LEN);
- (void)at_reg_mcast(ifID, (caddr_t)&ifID->ZoneMcastAddr);
- return(0);
-}
projects / apple / xnu.git / blobdiff