ether.c revision 62209
152942Sbrian/*- 252942Sbrian * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org> 352942Sbrian * All rights reserved. 452942Sbrian * 552942Sbrian * Redistribution and use in source and binary forms, with or without 652942Sbrian * modification, are permitted provided that the following conditions 752942Sbrian * are met: 852942Sbrian * 1. Redistributions of source code must retain the above copyright 952942Sbrian * notice, this list of conditions and the following disclaimer. 1052942Sbrian * 2. Redistributions in binary form must reproduce the above copyright 1152942Sbrian * notice, this list of conditions and the following disclaimer in the 1252942Sbrian * documentation and/or other materials provided with the distribution. 1352942Sbrian * 1452942Sbrian * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1552942Sbrian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1652942Sbrian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1752942Sbrian * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1852942Sbrian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1952942Sbrian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2052942Sbrian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2152942Sbrian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2252942Sbrian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2352942Sbrian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2452942Sbrian * SUCH DAMAGE. 2552942Sbrian * 2652942Sbrian * $FreeBSD: head/usr.sbin/ppp/ether.c 62209 2000-06-28 09:30:30Z brian $ 2752942Sbrian */ 2852942Sbrian 2952942Sbrian#include <sys/param.h> 3052942Sbrian#include <sys/socket.h> 3152942Sbrian#include <sys/un.h> 3252942Sbrian#include <netinet/in.h> 3352942Sbrian#include <arpa/inet.h> 3452942Sbrian#include <netdb.h> 3552942Sbrian#include <netgraph.h> 3652942Sbrian#include <net/ethernet.h> 3752942Sbrian#include <netinet/in_systm.h> 3852942Sbrian#include <netinet/ip.h> 3952942Sbrian#include <netgraph/ng_ether.h> 4052942Sbrian#include <netgraph/ng_message.h> 4152942Sbrian#include <netgraph/ng_pppoe.h> 4252942Sbrian#include <netgraph/ng_socket.h> 4352942Sbrian 4452942Sbrian#include <errno.h> 4552942Sbrian#include <stdio.h> 4652942Sbrian#include <stdlib.h> 4752942Sbrian#include <string.h> 4852942Sbrian#include <sysexits.h> 4952942Sbrian#include <sys/fcntl.h> 5052942Sbrian#if defined(__FreeBSD__) && !defined(NOKLDLOAD) 5152942Sbrian#include <sys/linker.h> 5253241Sbrian#include <sys/module.h> 5352942Sbrian#endif 5452942Sbrian#include <sys/uio.h> 5552942Sbrian#include <termios.h> 5652942Sbrian#include <sys/time.h> 5752942Sbrian#include <unistd.h> 5852942Sbrian 5952942Sbrian#include "layer.h" 6052942Sbrian#include "defs.h" 6152942Sbrian#include "mbuf.h" 6252942Sbrian#include "log.h" 6352942Sbrian#include "timer.h" 6452942Sbrian#include "lqr.h" 6552942Sbrian#include "hdlc.h" 6652942Sbrian#include "throughput.h" 6752942Sbrian#include "fsm.h" 6852942Sbrian#include "lcp.h" 6952942Sbrian#include "ccp.h" 7052942Sbrian#include "link.h" 7152942Sbrian#include "async.h" 7252942Sbrian#include "descriptor.h" 7352942Sbrian#include "physical.h" 7452942Sbrian#include "main.h" 7552942Sbrian#include "mp.h" 7652942Sbrian#include "chat.h" 7752942Sbrian#include "auth.h" 7852942Sbrian#include "chap.h" 7952942Sbrian#include "cbcp.h" 8052942Sbrian#include "datalink.h" 8152942Sbrian#include "slcompress.h" 8252942Sbrian#include "iplist.h" 8352942Sbrian#include "ipcp.h" 8452942Sbrian#include "filter.h" 8552942Sbrian#ifndef NORADIUS 8652942Sbrian#include "radius.h" 8752942Sbrian#endif 8852942Sbrian#include "bundle.h" 8952942Sbrian#include "id.h" 9052942Sbrian#include "ether.h" 9152942Sbrian 9252942Sbrian 9352942Sbrian#define PPPOE_NODE_TYPE_LEN (sizeof NG_PPPOE_NODE_TYPE - 1) /* "PPPoE" */ 9452942Sbrian 9552942Sbrianstruct etherdevice { 9652942Sbrian struct device dev; /* What struct physical knows about */ 9752942Sbrian int cs; /* Control socket */ 9852942Sbrian int connected; /* Are we connected yet ? */ 9952942Sbrian int timeout; /* Seconds attempting to connect */ 10052942Sbrian char hook[sizeof TUN_NAME + 11]; /* Our socket node hook */ 10152942Sbrian}; 10252942Sbrian 10352942Sbrian#define device2ether(d) \ 10452942Sbrian ((d)->type == ETHER_DEVICE ? (struct etherdevice *)d : NULL) 10552942Sbrian 10652942Sbrianint 10752942Sbrianether_DeviceSize(void) 10852942Sbrian{ 10952942Sbrian return sizeof(struct etherdevice); 11052942Sbrian} 11152942Sbrian 11252942Sbrianstatic ssize_t 11352942Sbrianether_Write(struct physical *p, const void *v, size_t n) 11452942Sbrian{ 11552942Sbrian struct etherdevice *dev = device2ether(p->handler); 11652942Sbrian 11752942Sbrian return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : n; 11852942Sbrian} 11952942Sbrian 12052942Sbrianstatic ssize_t 12152942Sbrianether_Read(struct physical *p, void *v, size_t n) 12252942Sbrian{ 12352942Sbrian char hook[sizeof TUN_NAME + 11]; 12452942Sbrian 12552942Sbrian return NgRecvData(p->fd, v, n, hook); 12652942Sbrian} 12752942Sbrian 12852942Sbrianstatic int 12952942Sbrianether_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 13052942Sbrian{ 13152942Sbrian struct etherdevice *dev = device2ether(p->handler); 13252942Sbrian int result; 13352942Sbrian 13452942Sbrian if (r && dev->cs >= 0 && FD_ISSET(dev->cs, r)) { 13552942Sbrian FD_CLR(dev->cs, r); 13652942Sbrian log_Printf(LogTIMER, "%s: fdunset(ctrl) %d\n", p->link.name, dev->cs); 13752942Sbrian result = 1; 13852942Sbrian } else 13952942Sbrian result = 0; 14052942Sbrian 14152942Sbrian /* Careful... physical_RemoveFromSet() called us ! */ 14252942Sbrian 14352942Sbrian p->handler->removefromset = NULL; 14452942Sbrian result += physical_RemoveFromSet(p, r, w, e); 14552942Sbrian p->handler->removefromset = ether_RemoveFromSet; 14652942Sbrian 14752942Sbrian return result; 14852942Sbrian} 14952942Sbrian 15052942Sbrianstatic void 15152942Sbrianether_Free(struct physical *p) 15252942Sbrian{ 15352942Sbrian struct etherdevice *dev = device2ether(p->handler); 15452942Sbrian 15552942Sbrian physical_SetDescriptor(p); 15652942Sbrian if (dev->cs != -1) 15752942Sbrian close(dev->cs); 15852942Sbrian free(dev); 15952942Sbrian} 16052942Sbrian 16152942Sbrianstatic const char * 16252942Sbrianether_OpenInfo(struct physical *p) 16352942Sbrian{ 16452942Sbrian struct etherdevice *dev = device2ether(p->handler); 16552942Sbrian 16652942Sbrian switch (dev->connected) { 16752942Sbrian case CARRIER_PENDING: 16852942Sbrian return "negotiating"; 16952942Sbrian case CARRIER_OK: 17052942Sbrian return "established"; 17152942Sbrian } 17252942Sbrian 17352942Sbrian return "disconnected"; 17452942Sbrian} 17552942Sbrian 17652942Sbrianstatic void 17752942Sbrianether_device2iov(struct device *d, struct iovec *iov, int *niov, 17853684Sbrian int maxiov, int *auxfd, int *nauxfd) 17952942Sbrian{ 18052942Sbrian struct etherdevice *dev = device2ether(d); 18152942Sbrian int sz = physical_MaxDeviceSize(); 18252942Sbrian 18352942Sbrian iov[*niov].iov_base = realloc(d, sz); 18452942Sbrian if (iov[*niov].iov_base == NULL) { 18552942Sbrian log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); 18652942Sbrian AbortProgram(EX_OSERR); 18752942Sbrian } 18852942Sbrian iov[*niov].iov_len = sz; 18952942Sbrian (*niov)++; 19052942Sbrian 19152942Sbrian if (dev->cs >= 0) { 19252942Sbrian *auxfd = dev->cs; 19352942Sbrian (*nauxfd)++; 19452942Sbrian } 19552942Sbrian} 19652942Sbrian 19752942Sbrianstatic void 19852942Sbrianether_MessageIn(struct etherdevice *dev) 19952942Sbrian{ 20052942Sbrian char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)]; 20152942Sbrian struct ng_mesg *rep = (struct ng_mesg *)msgbuf; 20252942Sbrian struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep); 20352942Sbrian char unknown[14]; 20452942Sbrian const char *msg; 20552942Sbrian struct timeval t; 20652942Sbrian fd_set r; 20752942Sbrian 20852942Sbrian if (dev->cs < 0) 20952942Sbrian return; 21052942Sbrian 21152942Sbrian FD_ZERO(&r); 21252942Sbrian FD_SET(dev->cs, &r); 21352942Sbrian t.tv_sec = t.tv_usec = 0; 21452942Sbrian if (select(dev->cs + 1, &r, NULL, NULL, &t) <= 0) 21552942Sbrian return; 21652942Sbrian 21752942Sbrian if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) < 0) 21852942Sbrian return; 21952942Sbrian 22052942Sbrian if (rep->header.version != NG_VERSION) { 22152942Sbrian log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n", 22252942Sbrian (long)rep->header.version, (long)NG_VERSION); 22352942Sbrian return; 22452942Sbrian } 22552942Sbrian 22652942Sbrian if (rep->header.typecookie != NGM_PPPOE_COOKIE) { 22752942Sbrian log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n", 22852942Sbrian (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE); 22952942Sbrian return; 23052942Sbrian } 23152942Sbrian 23252942Sbrian switch (rep->header.cmd) { 23352942Sbrian case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break; 23452942Sbrian case NGM_PPPOE_CONNECT: msg = "CONNECT"; break; 23552942Sbrian case NGM_PPPOE_LISTEN: msg = "LISTEN"; break; 23652942Sbrian case NGM_PPPOE_OFFER: msg = "OFFER"; break; 23752942Sbrian case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break; 23852942Sbrian case NGM_PPPOE_FAIL: msg = "FAIL"; break; 23952942Sbrian case NGM_PPPOE_CLOSE: msg = "CLOSE"; break; 24052942Sbrian case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break; 24152942Sbrian default: 24252942Sbrian snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd); 24352942Sbrian msg = unknown; 24452942Sbrian break; 24552942Sbrian } 24652942Sbrian 24752942Sbrian log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%s\")\n", msg, sts->hook); 24852942Sbrian 24952942Sbrian switch (rep->header.cmd) { 25052942Sbrian case NGM_PPPOE_SUCCESS: 25152942Sbrian dev->connected = CARRIER_OK; 25252942Sbrian break; 25352942Sbrian case NGM_PPPOE_FAIL: 25452942Sbrian case NGM_PPPOE_CLOSE: 25552942Sbrian dev->connected = CARRIER_LOST; 25652942Sbrian break; 25752942Sbrian } 25852942Sbrian} 25952942Sbrian 26052942Sbrianstatic int 26152942Sbrianether_AwaitCarrier(struct physical *p) 26252942Sbrian{ 26352942Sbrian struct etherdevice *dev = device2ether(p->handler); 26452942Sbrian 26553071Sbrian if (dev->connected != CARRIER_OK && !dev->timeout--) 26652942Sbrian dev->connected = CARRIER_LOST; 26752942Sbrian else if (dev->connected == CARRIER_PENDING) 26852942Sbrian ether_MessageIn(dev); 26952942Sbrian 27052942Sbrian return dev->connected; 27152942Sbrian} 27252942Sbrian 27352942Sbrianstatic const struct device baseetherdevice = { 27452942Sbrian ETHER_DEVICE, 27552942Sbrian "ether", 27653733Sbrian { CD_REQUIRED, DEF_ETHERCDDELAY }, 27752942Sbrian ether_AwaitCarrier, 27852942Sbrian ether_RemoveFromSet, 27952942Sbrian NULL, 28052942Sbrian NULL, 28152942Sbrian NULL, 28252942Sbrian NULL, 28352942Sbrian ether_Free, 28452942Sbrian ether_Read, 28552942Sbrian ether_Write, 28652942Sbrian ether_device2iov, 28752942Sbrian NULL, 28852942Sbrian ether_OpenInfo 28952942Sbrian}; 29052942Sbrian 29152942Sbrianstruct device * 29252942Sbrianether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 29352942Sbrian int maxiov, int *auxfd, int *nauxfd) 29452942Sbrian{ 29552942Sbrian if (type == ETHER_DEVICE) { 29652942Sbrian struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base; 29752942Sbrian 29852942Sbrian dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 29952942Sbrian if (dev == NULL) { 30052942Sbrian log_Printf(LogALERT, "Failed to allocate memory: %d\n", 30152942Sbrian (int)(sizeof *dev)); 30252942Sbrian AbortProgram(EX_OSERR); 30352942Sbrian } 30452942Sbrian 30552942Sbrian if (*nauxfd) { 30652942Sbrian dev->cs = *auxfd; 30752942Sbrian (*nauxfd)--; 30852942Sbrian } else 30952942Sbrian dev->cs = -1; 31052942Sbrian 31152942Sbrian /* Refresh function pointers etc */ 31252942Sbrian memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 31352942Sbrian 31452942Sbrian physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 31552942Sbrian return &dev->dev; 31652942Sbrian } 31752942Sbrian 31852942Sbrian return NULL; 31952942Sbrian} 32052942Sbrian 32152942Sbrianstatic int 32258028Sbrianether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 32352942Sbrian{ 32452942Sbrian struct physical *p = descriptor2physical(d); 32552942Sbrian struct etherdevice *dev = device2ether(p->handler); 32652942Sbrian int result; 32752942Sbrian 32852942Sbrian if (r && dev->cs >= 0) { 32952942Sbrian FD_SET(dev->cs, r); 33052942Sbrian log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs); 33152942Sbrian result = 1; 33252942Sbrian } else 33352942Sbrian result = 0; 33452942Sbrian 33552942Sbrian result += physical_doUpdateSet(d, r, w, e, n, 0); 33652942Sbrian 33752942Sbrian return result; 33852942Sbrian} 33952942Sbrian 34052942Sbrianstatic int 34158028Sbrianether_IsSet(struct fdescriptor *d, const fd_set *fdset) 34252942Sbrian{ 34352942Sbrian struct physical *p = descriptor2physical(d); 34452942Sbrian struct etherdevice *dev = device2ether(p->handler); 34552942Sbrian int result; 34652942Sbrian 34752942Sbrian result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset); 34852942Sbrian result += physical_IsSet(d, fdset); 34952942Sbrian 35052942Sbrian return result; 35152942Sbrian} 35252942Sbrian 35352942Sbrianstatic void 35458028Sbrianether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 35552942Sbrian const fd_set *fdset) 35652942Sbrian{ 35752942Sbrian struct physical *p = descriptor2physical(d); 35852942Sbrian struct etherdevice *dev = device2ether(p->handler); 35952942Sbrian 36052942Sbrian if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) { 36152942Sbrian ether_MessageIn(dev); 36252942Sbrian if (dev->connected == CARRIER_LOST) { 36352942Sbrian log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name); 36452942Sbrian datalink_Down(p->dl, CLOSE_NORMAL); 36552942Sbrian return; 36652942Sbrian } 36752942Sbrian } 36852942Sbrian 36952942Sbrian if (physical_IsSet(d, fdset)) 37052942Sbrian physical_DescriptorRead(d, bundle, fdset); 37152942Sbrian} 37252942Sbrian 37352942Sbrianstatic struct device * 37452942Sbrianether_Abandon(struct etherdevice *dev, struct physical *p) 37552942Sbrian{ 37652942Sbrian /* Abandon our node construction */ 37752942Sbrian close(dev->cs); 37852942Sbrian close(p->fd); 37952942Sbrian p->fd = -2; /* Nobody else need try.. */ 38052942Sbrian free(dev); 38152942Sbrian 38252942Sbrian return NULL; 38352942Sbrian} 38452942Sbrian 38552942Sbrianstruct device * 38652942Sbrianether_Create(struct physical *p) 38752942Sbrian{ 38852942Sbrian u_char rbuf[2048]; 38952942Sbrian struct etherdevice *dev; 39052942Sbrian struct ng_mesg *resp; 39152942Sbrian const struct hooklist *hlist; 39252942Sbrian const struct nodeinfo *ninfo; 39352942Sbrian int f; 39452942Sbrian 39552942Sbrian dev = NULL; 39652942Sbrian if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE, 39752942Sbrian PPPOE_NODE_TYPE_LEN) && 39852942Sbrian p->name.full[PPPOE_NODE_TYPE_LEN] == ':') { 39952942Sbrian const struct linkinfo *nlink; 40052942Sbrian struct ngpppoe_init_data *data; 40152942Sbrian struct ngm_mkpeer mkp; 40252942Sbrian struct ngm_connect ngc; 40352942Sbrian const char *iface, *provider; 40452942Sbrian char *path, etherid[12]; 40553242Sbrian int ifacelen, providerlen; 40652942Sbrian char connectpath[sizeof dev->hook + 2]; /* .:<hook> */ 40752942Sbrian 40852942Sbrian p->fd--; /* We own the device - change fd */ 40952942Sbrian 41053241Sbrian#if defined(__FreeBSD__) && !defined(NOKLDLOAD) 41153241Sbrian if (modfind("netgraph") == -1) { 41253241Sbrian log_Printf(LogWARN, "Netgraph is not built into the kernel\n"); 41352942Sbrian return NULL; 41452942Sbrian } 41552942Sbrian 41662209Sbrian if (modfind("ng_ether") == -1 && ID0kldload("ng_ether") == -1) 41762209Sbrian /* 41862209Sbrian * Don't treat this as an error as older kernels have this stuff 41962209Sbrian * built in as part of the netgraph node itself. 42062209Sbrian */ 42162209Sbrian log_Printf(LogWARN, "kldload: ng_ether: %s\n", strerror(errno)); 42262209Sbrian 42362209Sbrian if (modfind("ng_socket") == -1 && ID0kldload("ng_socket") == -1) { 42452942Sbrian log_Printf(LogWARN, "kldload: ng_socket: %s\n", strerror(errno)); 42552942Sbrian return NULL; 42652942Sbrian } 42752942Sbrian#endif 42852942Sbrian 42952942Sbrian if ((dev = malloc(sizeof *dev)) == NULL) 43052942Sbrian return NULL; 43152942Sbrian 43252942Sbrian iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1; 43352942Sbrian 43452942Sbrian provider = strchr(iface, ':'); 43552942Sbrian if (provider) { 43652942Sbrian ifacelen = provider - iface; 43752942Sbrian provider++; 43852942Sbrian providerlen = strlen(provider); 43952942Sbrian } else { 44052942Sbrian ifacelen = strlen(iface); 44152942Sbrian provider = ""; 44252942Sbrian providerlen = 0; 44352942Sbrian } 44452942Sbrian 44552942Sbrian /* 44652942Sbrian * We're going to do this (where tunN is our tunnel device): 44752942Sbrian * 44852942Sbrian * .---------. 44952942Sbrian * | ether | 45052942Sbrian * | <iface> | dev->cs 45152942Sbrian * `---------' | 45252942Sbrian * (orphan) p->fd | 45352942Sbrian * | | | 45452942Sbrian * | | | 45552942Sbrian * (ethernet) | | 45652942Sbrian * .---------. .-----------. 45752942Sbrian * | pppoe | | socket | 45852942Sbrian * | <iface> |(tunN)<---->(tunN)| <unnamed> | 45952942Sbrian * `--------- `-----------' 46052942Sbrian * (tunX) 46152942Sbrian * ^ 46252942Sbrian * | 46352942Sbrian * `--->(tunX) 46452942Sbrian */ 46552942Sbrian 46652942Sbrian /* Create a socket node */ 46753535Sbrian if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) { 46852942Sbrian log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n", 46952942Sbrian strerror(errno)); 47052942Sbrian free(dev); 47152942Sbrian return NULL; 47252942Sbrian } 47352942Sbrian 47452942Sbrian /* 47552942Sbrian * Ask for a list of hooks attached to the "ether" node. This node should 47652942Sbrian * magically exist as a way of hooking stuff onto an ethernet device 47752942Sbrian */ 47852942Sbrian path = (char *)alloca(ifacelen + 2); 47952942Sbrian sprintf(path, "%.*s:", ifacelen, iface); 48052942Sbrian if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS, 48152942Sbrian NULL, 0) < 0) { 48252942Sbrian log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n", 48352942Sbrian path, strerror(errno)); 48452942Sbrian return ether_Abandon(dev, p); 48552942Sbrian } 48652942Sbrian 48752942Sbrian /* Get our list back */ 48852942Sbrian resp = (struct ng_mesg *)rbuf; 48952942Sbrian if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) < 0) { 49052942Sbrian log_Printf(LogWARN, "Cannot get netgraph response: %s\n", 49152942Sbrian strerror(errno)); 49252942Sbrian return ether_Abandon(dev, p); 49352942Sbrian } 49452942Sbrian 49552942Sbrian hlist = (const struct hooklist *)resp->data; 49652942Sbrian ninfo = &hlist->nodeinfo; 49752942Sbrian 49852942Sbrian /* Make sure we've got the right type of node */ 49952942Sbrian if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE, 50052942Sbrian sizeof NG_ETHER_NODE_TYPE - 1)) { 50152942Sbrian log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``" 50252942Sbrian NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type); 50352942Sbrian return ether_Abandon(dev, p); 50452942Sbrian } 50552942Sbrian 50652963Sbrian log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n", 50752942Sbrian path, ninfo->id); 50852942Sbrian 50952942Sbrian /* look for a hook already attached. */ 51052942Sbrian for (f = 0; f < ninfo->hooks; f++) { 51152942Sbrian nlink = &hlist->link[f]; 51252942Sbrian 51352942Sbrian log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook, 51452942Sbrian nlink->peerhook); 51552942Sbrian 51652942Sbrian if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) || 51752942Sbrian !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) { 51852942Sbrian /* 51952942Sbrian * Something is using the data coming out of this ``ether'' node. 52052942Sbrian * If it's a PPPoE node, we use that node, otherwise we complain that 52152942Sbrian * someone else is using the node. 52252942Sbrian */ 52352942Sbrian if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE)) 52452942Sbrian /* Use this PPPoE node ! */ 52552963Sbrian snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id); 52652942Sbrian else { 52752942Sbrian log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n", 52852942Sbrian path, nlink->nodeinfo.type); 52952942Sbrian return ether_Abandon(dev, p); 53052942Sbrian } 53152942Sbrian break; 53252942Sbrian } 53352942Sbrian } 53452942Sbrian 53552942Sbrian if (f == ninfo->hooks) { 53652942Sbrian /* 53752942Sbrian * Create a new ``PPPoE'' node connected to the ``ether'' node using 53852942Sbrian * the magic ``orphan'' and ``ethernet'' hooks 53952942Sbrian */ 54052942Sbrian snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE); 54152942Sbrian snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN); 54252942Sbrian snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET); 54352963Sbrian snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id); 54452942Sbrian 54552942Sbrian log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n", 54652942Sbrian etherid, mkp.ourhook, mkp.peerhook); 54752942Sbrian 54852942Sbrian if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE, 54952942Sbrian NGM_MKPEER, &mkp, sizeof mkp) < 0) { 55052942Sbrian log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n", 55152942Sbrian etherid, strerror(errno)); 55252942Sbrian return ether_Abandon(dev, p); 55352942Sbrian } 55452942Sbrian 55552942Sbrian snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN); 55652942Sbrian } 55752942Sbrian 55852942Sbrian snprintf(dev->hook, sizeof dev->hook, "%s%d", 55952942Sbrian TUN_NAME, p->dl->bundle->unit); 56052942Sbrian 56152942Sbrian /* 56252942Sbrian * Connect the PPPoE node to our socket node. 56352942Sbrian * ngc.path has already been set up 56452942Sbrian */ 56552942Sbrian snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook); 56652942Sbrian memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook); 56752942Sbrian 56852942Sbrian log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n", 56952942Sbrian ngc.ourhook, ngc.path, ngc.peerhook); 57052942Sbrian if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE, 57152942Sbrian NGM_CONNECT, &ngc, sizeof ngc) < 0) { 57252942Sbrian log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph " 57352942Sbrian "nodes: %s\n", strerror(errno)); 57452942Sbrian return ether_Abandon(dev, p); 57552942Sbrian } 57652942Sbrian 57752942Sbrian /* And finally, request a connection to the given provider */ 57852942Sbrian 57952942Sbrian data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen + 1); 58052942Sbrian 58152942Sbrian snprintf(data->hook, sizeof data->hook, "%s", dev->hook); 58252942Sbrian strcpy(data->data, provider); 58352942Sbrian data->data_len = providerlen; 58452942Sbrian 58552942Sbrian snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook); 58652942Sbrian log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath); 58752942Sbrian if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 58852942Sbrian NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) { 58952942Sbrian log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n", 59052942Sbrian connectpath, strerror(errno)); 59152942Sbrian return ether_Abandon(dev, p); 59252942Sbrian } 59352942Sbrian 59453062Sbrian /* Hook things up so that we monitor dev->cs */ 59553062Sbrian p->desc.UpdateSet = ether_UpdateSet; 59653062Sbrian p->desc.IsSet = ether_IsSet; 59753062Sbrian p->desc.Read = ether_DescriptorRead; 59853733Sbrian 59953733Sbrian memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 60053733Sbrian switch (p->cfg.cd.necessity) { 60153733Sbrian case CD_VARIABLE: 60253733Sbrian dev->dev.cd.delay = p->cfg.cd.delay; 60353733Sbrian break; 60453733Sbrian case CD_REQUIRED: 60553733Sbrian dev->dev.cd = p->cfg.cd; 60653733Sbrian break; 60753733Sbrian case CD_NOTREQUIRED: 60853733Sbrian log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n", 60953733Sbrian p->link.name, dev->dev.cd.delay); 61053733Sbrian case CD_DEFAULT: 61153733Sbrian break; 61253733Sbrian } 61353733Sbrian 61453733Sbrian dev->timeout = dev->dev.cd.delay; 61553733Sbrian dev->connected = CARRIER_PENDING; 61653733Sbrian 61752942Sbrian } else { 61852942Sbrian /* See if we're a netgraph socket */ 61952942Sbrian struct sockaddr_ng ngsock; 62052942Sbrian struct sockaddr *sock = (struct sockaddr *)&ngsock; 62152942Sbrian int sz; 62252942Sbrian 62352942Sbrian sz = sizeof ngsock; 62452942Sbrian if (getsockname(p->fd, sock, &sz) != -1 && sock->sa_family == AF_NETGRAPH) { 62552942Sbrian /* 62653062Sbrian * It's a netgraph node... We can't determine hook names etc, so we 62753062Sbrian * stay pretty impartial.... 62852942Sbrian */ 62953062Sbrian log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name); 63052942Sbrian 63152942Sbrian if ((dev = malloc(sizeof *dev)) == NULL) { 63252942Sbrian log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n", 63352942Sbrian p->link.name, strerror(errno)); 63452942Sbrian return NULL; 63552942Sbrian } 63652942Sbrian 63753733Sbrian memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 63852942Sbrian dev->cs = -1; 63952942Sbrian dev->timeout = 0; 64052942Sbrian dev->connected = CARRIER_OK; 64153062Sbrian *dev->hook = '\0'; 64252942Sbrian } 64352942Sbrian } 64452942Sbrian 64552942Sbrian if (dev) { 64652942Sbrian physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 64752942Sbrian 64852942Sbrian /* Moan about (and fix) invalid LCP configurations */ 64952942Sbrian if (p->link.lcp.cfg.mru > 1492) { 65052942Sbrian log_Printf(LogWARN, "%s: Reducing MRU to 1492\n", p->link.name); 65152942Sbrian p->link.lcp.cfg.mru = 1492; 65252942Sbrian } 65352942Sbrian if (p->dl->bundle->cfg.mtu > 1492) { 65452942Sbrian log_Printf(LogWARN, "%s: Reducing MTU to 1492\n", p->link.name); 65552942Sbrian p->dl->bundle->cfg.mtu = 1492; 65652942Sbrian } 65752942Sbrian 65852942Sbrian return &dev->dev; 65952942Sbrian } 66052942Sbrian 66152942Sbrian return NULL; 66252942Sbrian} 663