ether.c revision 71006
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 71006 2001-01-14 00:54:48Z 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 5471006Sbrian#include <sys/stat.h> 5552942Sbrian#include <sys/uio.h> 5652942Sbrian#include <termios.h> 5752942Sbrian#include <sys/time.h> 5852942Sbrian#include <unistd.h> 5952942Sbrian 6052942Sbrian#include "layer.h" 6152942Sbrian#include "defs.h" 6252942Sbrian#include "mbuf.h" 6352942Sbrian#include "log.h" 6452942Sbrian#include "timer.h" 6552942Sbrian#include "lqr.h" 6652942Sbrian#include "hdlc.h" 6752942Sbrian#include "throughput.h" 6852942Sbrian#include "fsm.h" 6952942Sbrian#include "lcp.h" 7052942Sbrian#include "ccp.h" 7152942Sbrian#include "link.h" 7252942Sbrian#include "async.h" 7352942Sbrian#include "descriptor.h" 7452942Sbrian#include "physical.h" 7552942Sbrian#include "main.h" 7652942Sbrian#include "mp.h" 7752942Sbrian#include "chat.h" 7852942Sbrian#include "auth.h" 7952942Sbrian#include "chap.h" 8052942Sbrian#include "cbcp.h" 8152942Sbrian#include "datalink.h" 8252942Sbrian#include "slcompress.h" 8352942Sbrian#include "iplist.h" 8452942Sbrian#include "ipcp.h" 8552942Sbrian#include "filter.h" 8652942Sbrian#ifndef NORADIUS 8752942Sbrian#include "radius.h" 8852942Sbrian#endif 8952942Sbrian#include "bundle.h" 9052942Sbrian#include "id.h" 9152942Sbrian#include "ether.h" 9252942Sbrian 9352942Sbrian 9452942Sbrian#define PPPOE_NODE_TYPE_LEN (sizeof NG_PPPOE_NODE_TYPE - 1) /* "PPPoE" */ 9552942Sbrian 9652942Sbrianstruct etherdevice { 9752942Sbrian struct device dev; /* What struct physical knows about */ 9852942Sbrian int cs; /* Control socket */ 9952942Sbrian int connected; /* Are we connected yet ? */ 10052942Sbrian int timeout; /* Seconds attempting to connect */ 10152942Sbrian char hook[sizeof TUN_NAME + 11]; /* Our socket node hook */ 10252942Sbrian}; 10352942Sbrian 10452942Sbrian#define device2ether(d) \ 10552942Sbrian ((d)->type == ETHER_DEVICE ? (struct etherdevice *)d : NULL) 10652942Sbrian 10752942Sbrianint 10852942Sbrianether_DeviceSize(void) 10952942Sbrian{ 11052942Sbrian return sizeof(struct etherdevice); 11152942Sbrian} 11252942Sbrian 11352942Sbrianstatic ssize_t 11452942Sbrianether_Write(struct physical *p, const void *v, size_t n) 11552942Sbrian{ 11652942Sbrian struct etherdevice *dev = device2ether(p->handler); 11752942Sbrian 11852942Sbrian return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : n; 11952942Sbrian} 12052942Sbrian 12152942Sbrianstatic ssize_t 12252942Sbrianether_Read(struct physical *p, void *v, size_t n) 12352942Sbrian{ 12452942Sbrian char hook[sizeof TUN_NAME + 11]; 12552942Sbrian 12652942Sbrian return NgRecvData(p->fd, v, n, hook); 12752942Sbrian} 12852942Sbrian 12952942Sbrianstatic int 13052942Sbrianether_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 13152942Sbrian{ 13252942Sbrian struct etherdevice *dev = device2ether(p->handler); 13352942Sbrian int result; 13452942Sbrian 13552942Sbrian if (r && dev->cs >= 0 && FD_ISSET(dev->cs, r)) { 13652942Sbrian FD_CLR(dev->cs, r); 13752942Sbrian log_Printf(LogTIMER, "%s: fdunset(ctrl) %d\n", p->link.name, dev->cs); 13852942Sbrian result = 1; 13952942Sbrian } else 14052942Sbrian result = 0; 14152942Sbrian 14252942Sbrian /* Careful... physical_RemoveFromSet() called us ! */ 14352942Sbrian 14452942Sbrian p->handler->removefromset = NULL; 14552942Sbrian result += physical_RemoveFromSet(p, r, w, e); 14652942Sbrian p->handler->removefromset = ether_RemoveFromSet; 14752942Sbrian 14852942Sbrian return result; 14952942Sbrian} 15052942Sbrian 15152942Sbrianstatic void 15252942Sbrianether_Free(struct physical *p) 15352942Sbrian{ 15452942Sbrian struct etherdevice *dev = device2ether(p->handler); 15552942Sbrian 15652942Sbrian physical_SetDescriptor(p); 15752942Sbrian if (dev->cs != -1) 15852942Sbrian close(dev->cs); 15952942Sbrian free(dev); 16052942Sbrian} 16152942Sbrian 16252942Sbrianstatic const char * 16352942Sbrianether_OpenInfo(struct physical *p) 16452942Sbrian{ 16552942Sbrian struct etherdevice *dev = device2ether(p->handler); 16652942Sbrian 16752942Sbrian switch (dev->connected) { 16852942Sbrian case CARRIER_PENDING: 16952942Sbrian return "negotiating"; 17052942Sbrian case CARRIER_OK: 17152942Sbrian return "established"; 17252942Sbrian } 17352942Sbrian 17452942Sbrian return "disconnected"; 17552942Sbrian} 17652942Sbrian 17752942Sbrianstatic void 17852942Sbrianether_device2iov(struct device *d, struct iovec *iov, int *niov, 17953684Sbrian int maxiov, int *auxfd, int *nauxfd) 18052942Sbrian{ 18152942Sbrian struct etherdevice *dev = device2ether(d); 18252942Sbrian int sz = physical_MaxDeviceSize(); 18352942Sbrian 18452942Sbrian iov[*niov].iov_base = realloc(d, sz); 18552942Sbrian if (iov[*niov].iov_base == NULL) { 18652942Sbrian log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); 18752942Sbrian AbortProgram(EX_OSERR); 18852942Sbrian } 18952942Sbrian iov[*niov].iov_len = sz; 19052942Sbrian (*niov)++; 19152942Sbrian 19252942Sbrian if (dev->cs >= 0) { 19352942Sbrian *auxfd = dev->cs; 19452942Sbrian (*nauxfd)++; 19552942Sbrian } 19652942Sbrian} 19752942Sbrian 19852942Sbrianstatic void 19952942Sbrianether_MessageIn(struct etherdevice *dev) 20052942Sbrian{ 20152942Sbrian char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)]; 20252942Sbrian struct ng_mesg *rep = (struct ng_mesg *)msgbuf; 20352942Sbrian struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep); 20452942Sbrian char unknown[14]; 20552942Sbrian const char *msg; 20652942Sbrian struct timeval t; 20766898Sbrian fd_set *r; 20866898Sbrian int ret; 20952942Sbrian 21052942Sbrian if (dev->cs < 0) 21152942Sbrian return; 21252942Sbrian 21366898Sbrian if ((r = mkfdset()) == NULL) { 21466898Sbrian log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n"); 21566898Sbrian return; 21666898Sbrian } 21766898Sbrian zerofdset(r); 21866898Sbrian FD_SET(dev->cs, r); 21952942Sbrian t.tv_sec = t.tv_usec = 0; 22066898Sbrian ret = select(dev->cs + 1, r, NULL, NULL, &t); 22166898Sbrian free(r); 22266898Sbrian 22366898Sbrian if (ret <= 0) 22452942Sbrian return; 22552942Sbrian 22652942Sbrian if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) < 0) 22752942Sbrian return; 22852942Sbrian 22952942Sbrian if (rep->header.version != NG_VERSION) { 23052942Sbrian log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n", 23152942Sbrian (long)rep->header.version, (long)NG_VERSION); 23252942Sbrian return; 23352942Sbrian } 23452942Sbrian 23552942Sbrian if (rep->header.typecookie != NGM_PPPOE_COOKIE) { 23652942Sbrian log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n", 23752942Sbrian (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE); 23852942Sbrian return; 23952942Sbrian } 24052942Sbrian 24152942Sbrian switch (rep->header.cmd) { 24252942Sbrian case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break; 24352942Sbrian case NGM_PPPOE_CONNECT: msg = "CONNECT"; break; 24452942Sbrian case NGM_PPPOE_LISTEN: msg = "LISTEN"; break; 24552942Sbrian case NGM_PPPOE_OFFER: msg = "OFFER"; break; 24652942Sbrian case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break; 24752942Sbrian case NGM_PPPOE_FAIL: msg = "FAIL"; break; 24852942Sbrian case NGM_PPPOE_CLOSE: msg = "CLOSE"; break; 24952942Sbrian case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break; 25052942Sbrian default: 25152942Sbrian snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd); 25252942Sbrian msg = unknown; 25352942Sbrian break; 25452942Sbrian } 25552942Sbrian 25652942Sbrian log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%s\")\n", msg, sts->hook); 25752942Sbrian 25852942Sbrian switch (rep->header.cmd) { 25952942Sbrian case NGM_PPPOE_SUCCESS: 26052942Sbrian dev->connected = CARRIER_OK; 26152942Sbrian break; 26252942Sbrian case NGM_PPPOE_FAIL: 26352942Sbrian case NGM_PPPOE_CLOSE: 26452942Sbrian dev->connected = CARRIER_LOST; 26552942Sbrian break; 26652942Sbrian } 26752942Sbrian} 26852942Sbrian 26952942Sbrianstatic int 27052942Sbrianether_AwaitCarrier(struct physical *p) 27152942Sbrian{ 27252942Sbrian struct etherdevice *dev = device2ether(p->handler); 27352942Sbrian 27453071Sbrian if (dev->connected != CARRIER_OK && !dev->timeout--) 27552942Sbrian dev->connected = CARRIER_LOST; 27652942Sbrian else if (dev->connected == CARRIER_PENDING) 27752942Sbrian ether_MessageIn(dev); 27852942Sbrian 27952942Sbrian return dev->connected; 28052942Sbrian} 28152942Sbrian 28252942Sbrianstatic const struct device baseetherdevice = { 28352942Sbrian ETHER_DEVICE, 28452942Sbrian "ether", 28553733Sbrian { CD_REQUIRED, DEF_ETHERCDDELAY }, 28652942Sbrian ether_AwaitCarrier, 28752942Sbrian ether_RemoveFromSet, 28852942Sbrian NULL, 28952942Sbrian NULL, 29052942Sbrian NULL, 29152942Sbrian NULL, 29252942Sbrian ether_Free, 29352942Sbrian ether_Read, 29452942Sbrian ether_Write, 29552942Sbrian ether_device2iov, 29652942Sbrian NULL, 29752942Sbrian ether_OpenInfo 29852942Sbrian}; 29952942Sbrian 30052942Sbrianstruct device * 30152942Sbrianether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 30252942Sbrian int maxiov, int *auxfd, int *nauxfd) 30352942Sbrian{ 30452942Sbrian if (type == ETHER_DEVICE) { 30552942Sbrian struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base; 30652942Sbrian 30752942Sbrian dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 30852942Sbrian if (dev == NULL) { 30952942Sbrian log_Printf(LogALERT, "Failed to allocate memory: %d\n", 31052942Sbrian (int)(sizeof *dev)); 31152942Sbrian AbortProgram(EX_OSERR); 31252942Sbrian } 31352942Sbrian 31452942Sbrian if (*nauxfd) { 31552942Sbrian dev->cs = *auxfd; 31652942Sbrian (*nauxfd)--; 31752942Sbrian } else 31852942Sbrian dev->cs = -1; 31952942Sbrian 32052942Sbrian /* Refresh function pointers etc */ 32152942Sbrian memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 32252942Sbrian 32352942Sbrian physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 32452942Sbrian return &dev->dev; 32552942Sbrian } 32652942Sbrian 32752942Sbrian return NULL; 32852942Sbrian} 32952942Sbrian 33052942Sbrianstatic int 33158028Sbrianether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 33252942Sbrian{ 33352942Sbrian struct physical *p = descriptor2physical(d); 33452942Sbrian struct etherdevice *dev = device2ether(p->handler); 33552942Sbrian int result; 33652942Sbrian 33752942Sbrian if (r && dev->cs >= 0) { 33852942Sbrian FD_SET(dev->cs, r); 33952942Sbrian log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs); 34052942Sbrian result = 1; 34152942Sbrian } else 34252942Sbrian result = 0; 34352942Sbrian 34452942Sbrian result += physical_doUpdateSet(d, r, w, e, n, 0); 34552942Sbrian 34652942Sbrian return result; 34752942Sbrian} 34852942Sbrian 34952942Sbrianstatic int 35058028Sbrianether_IsSet(struct fdescriptor *d, const fd_set *fdset) 35152942Sbrian{ 35252942Sbrian struct physical *p = descriptor2physical(d); 35352942Sbrian struct etherdevice *dev = device2ether(p->handler); 35452942Sbrian int result; 35552942Sbrian 35652942Sbrian result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset); 35752942Sbrian result += physical_IsSet(d, fdset); 35852942Sbrian 35952942Sbrian return result; 36052942Sbrian} 36152942Sbrian 36252942Sbrianstatic void 36358028Sbrianether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 36452942Sbrian const fd_set *fdset) 36552942Sbrian{ 36652942Sbrian struct physical *p = descriptor2physical(d); 36752942Sbrian struct etherdevice *dev = device2ether(p->handler); 36852942Sbrian 36952942Sbrian if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) { 37052942Sbrian ether_MessageIn(dev); 37152942Sbrian if (dev->connected == CARRIER_LOST) { 37252942Sbrian log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name); 37352942Sbrian datalink_Down(p->dl, CLOSE_NORMAL); 37452942Sbrian return; 37552942Sbrian } 37652942Sbrian } 37752942Sbrian 37852942Sbrian if (physical_IsSet(d, fdset)) 37952942Sbrian physical_DescriptorRead(d, bundle, fdset); 38052942Sbrian} 38152942Sbrian 38252942Sbrianstatic struct device * 38352942Sbrianether_Abandon(struct etherdevice *dev, struct physical *p) 38452942Sbrian{ 38552942Sbrian /* Abandon our node construction */ 38652942Sbrian close(dev->cs); 38752942Sbrian close(p->fd); 38852942Sbrian p->fd = -2; /* Nobody else need try.. */ 38952942Sbrian free(dev); 39052942Sbrian 39152942Sbrian return NULL; 39252942Sbrian} 39352942Sbrian 39452942Sbrianstruct device * 39552942Sbrianether_Create(struct physical *p) 39652942Sbrian{ 39752942Sbrian u_char rbuf[2048]; 39852942Sbrian struct etherdevice *dev; 39952942Sbrian struct ng_mesg *resp; 40052942Sbrian const struct hooklist *hlist; 40152942Sbrian const struct nodeinfo *ninfo; 40252942Sbrian int f; 40352942Sbrian 40452942Sbrian dev = NULL; 40552942Sbrian if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE, 40652942Sbrian PPPOE_NODE_TYPE_LEN) && 40752942Sbrian p->name.full[PPPOE_NODE_TYPE_LEN] == ':') { 40852942Sbrian const struct linkinfo *nlink; 40952942Sbrian struct ngpppoe_init_data *data; 41052942Sbrian struct ngm_mkpeer mkp; 41152942Sbrian struct ngm_connect ngc; 41252942Sbrian const char *iface, *provider; 41352942Sbrian char *path, etherid[12]; 41453242Sbrian int ifacelen, providerlen; 41552942Sbrian char connectpath[sizeof dev->hook + 2]; /* .:<hook> */ 41652942Sbrian 41752942Sbrian p->fd--; /* We own the device - change fd */ 41852942Sbrian 41953241Sbrian#if defined(__FreeBSD__) && !defined(NOKLDLOAD) 42053241Sbrian if (modfind("netgraph") == -1) { 42153241Sbrian log_Printf(LogWARN, "Netgraph is not built into the kernel\n"); 42252942Sbrian return NULL; 42352942Sbrian } 42452942Sbrian 42562209Sbrian if (modfind("ng_ether") == -1 && ID0kldload("ng_ether") == -1) 42662209Sbrian /* 42762209Sbrian * Don't treat this as an error as older kernels have this stuff 42862209Sbrian * built in as part of the netgraph node itself. 42962209Sbrian */ 43062209Sbrian log_Printf(LogWARN, "kldload: ng_ether: %s\n", strerror(errno)); 43162209Sbrian 43262209Sbrian if (modfind("ng_socket") == -1 && ID0kldload("ng_socket") == -1) { 43352942Sbrian log_Printf(LogWARN, "kldload: ng_socket: %s\n", strerror(errno)); 43452942Sbrian return NULL; 43552942Sbrian } 43652942Sbrian#endif 43752942Sbrian 43852942Sbrian if ((dev = malloc(sizeof *dev)) == NULL) 43952942Sbrian return NULL; 44052942Sbrian 44152942Sbrian iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1; 44252942Sbrian 44352942Sbrian provider = strchr(iface, ':'); 44452942Sbrian if (provider) { 44552942Sbrian ifacelen = provider - iface; 44652942Sbrian provider++; 44752942Sbrian providerlen = strlen(provider); 44852942Sbrian } else { 44952942Sbrian ifacelen = strlen(iface); 45052942Sbrian provider = ""; 45152942Sbrian providerlen = 0; 45252942Sbrian } 45352942Sbrian 45452942Sbrian /* 45552942Sbrian * We're going to do this (where tunN is our tunnel device): 45652942Sbrian * 45752942Sbrian * .---------. 45852942Sbrian * | ether | 45952942Sbrian * | <iface> | dev->cs 46052942Sbrian * `---------' | 46152942Sbrian * (orphan) p->fd | 46252942Sbrian * | | | 46352942Sbrian * | | | 46452942Sbrian * (ethernet) | | 46552942Sbrian * .---------. .-----------. 46652942Sbrian * | pppoe | | socket | 46752942Sbrian * | <iface> |(tunN)<---->(tunN)| <unnamed> | 46852942Sbrian * `--------- `-----------' 46952942Sbrian * (tunX) 47052942Sbrian * ^ 47152942Sbrian * | 47252942Sbrian * `--->(tunX) 47352942Sbrian */ 47452942Sbrian 47552942Sbrian /* Create a socket node */ 47653535Sbrian if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) { 47752942Sbrian log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n", 47852942Sbrian strerror(errno)); 47952942Sbrian free(dev); 48052942Sbrian return NULL; 48152942Sbrian } 48252942Sbrian 48352942Sbrian /* 48452942Sbrian * Ask for a list of hooks attached to the "ether" node. This node should 48552942Sbrian * magically exist as a way of hooking stuff onto an ethernet device 48652942Sbrian */ 48752942Sbrian path = (char *)alloca(ifacelen + 2); 48852942Sbrian sprintf(path, "%.*s:", ifacelen, iface); 48952942Sbrian if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS, 49052942Sbrian NULL, 0) < 0) { 49152942Sbrian log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n", 49252942Sbrian path, strerror(errno)); 49352942Sbrian return ether_Abandon(dev, p); 49452942Sbrian } 49552942Sbrian 49652942Sbrian /* Get our list back */ 49752942Sbrian resp = (struct ng_mesg *)rbuf; 49852942Sbrian if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) < 0) { 49952942Sbrian log_Printf(LogWARN, "Cannot get netgraph response: %s\n", 50052942Sbrian strerror(errno)); 50152942Sbrian return ether_Abandon(dev, p); 50252942Sbrian } 50352942Sbrian 50452942Sbrian hlist = (const struct hooklist *)resp->data; 50552942Sbrian ninfo = &hlist->nodeinfo; 50652942Sbrian 50752942Sbrian /* Make sure we've got the right type of node */ 50852942Sbrian if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE, 50952942Sbrian sizeof NG_ETHER_NODE_TYPE - 1)) { 51052942Sbrian log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``" 51152942Sbrian NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type); 51252942Sbrian return ether_Abandon(dev, p); 51352942Sbrian } 51452942Sbrian 51552963Sbrian log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n", 51652942Sbrian path, ninfo->id); 51752942Sbrian 51852942Sbrian /* look for a hook already attached. */ 51952942Sbrian for (f = 0; f < ninfo->hooks; f++) { 52052942Sbrian nlink = &hlist->link[f]; 52152942Sbrian 52252942Sbrian log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook, 52352942Sbrian nlink->peerhook); 52452942Sbrian 52552942Sbrian if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) || 52652942Sbrian !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) { 52752942Sbrian /* 52852942Sbrian * Something is using the data coming out of this ``ether'' node. 52952942Sbrian * If it's a PPPoE node, we use that node, otherwise we complain that 53052942Sbrian * someone else is using the node. 53152942Sbrian */ 53252942Sbrian if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE)) 53352942Sbrian /* Use this PPPoE node ! */ 53452963Sbrian snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id); 53552942Sbrian else { 53652942Sbrian log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n", 53752942Sbrian path, nlink->nodeinfo.type); 53852942Sbrian return ether_Abandon(dev, p); 53952942Sbrian } 54052942Sbrian break; 54152942Sbrian } 54252942Sbrian } 54352942Sbrian 54452942Sbrian if (f == ninfo->hooks) { 54552942Sbrian /* 54652942Sbrian * Create a new ``PPPoE'' node connected to the ``ether'' node using 54752942Sbrian * the magic ``orphan'' and ``ethernet'' hooks 54852942Sbrian */ 54952942Sbrian snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE); 55052942Sbrian snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN); 55152942Sbrian snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET); 55252963Sbrian snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id); 55352942Sbrian 55452942Sbrian log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n", 55552942Sbrian etherid, mkp.ourhook, mkp.peerhook); 55652942Sbrian 55752942Sbrian if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE, 55852942Sbrian NGM_MKPEER, &mkp, sizeof mkp) < 0) { 55952942Sbrian log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n", 56052942Sbrian etherid, strerror(errno)); 56152942Sbrian return ether_Abandon(dev, p); 56252942Sbrian } 56352942Sbrian 56452942Sbrian snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN); 56552942Sbrian } 56652942Sbrian 56752942Sbrian snprintf(dev->hook, sizeof dev->hook, "%s%d", 56852942Sbrian TUN_NAME, p->dl->bundle->unit); 56952942Sbrian 57052942Sbrian /* 57152942Sbrian * Connect the PPPoE node to our socket node. 57252942Sbrian * ngc.path has already been set up 57352942Sbrian */ 57452942Sbrian snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook); 57552942Sbrian memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook); 57652942Sbrian 57752942Sbrian log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n", 57852942Sbrian ngc.ourhook, ngc.path, ngc.peerhook); 57952942Sbrian if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE, 58052942Sbrian NGM_CONNECT, &ngc, sizeof ngc) < 0) { 58152942Sbrian log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph " 58252942Sbrian "nodes: %s\n", strerror(errno)); 58352942Sbrian return ether_Abandon(dev, p); 58452942Sbrian } 58552942Sbrian 58652942Sbrian /* And finally, request a connection to the given provider */ 58752942Sbrian 58868032Sbrian data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen); 58952942Sbrian snprintf(data->hook, sizeof data->hook, "%s", dev->hook); 59068846Sbrian memcpy(data->data, provider, providerlen); 59168846Sbrian data->data_len = providerlen; 59252942Sbrian 59352942Sbrian snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook); 59452942Sbrian log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath); 59552942Sbrian if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 59652942Sbrian NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) { 59752942Sbrian log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n", 59852942Sbrian connectpath, strerror(errno)); 59952942Sbrian return ether_Abandon(dev, p); 60052942Sbrian } 60152942Sbrian 60253062Sbrian /* Hook things up so that we monitor dev->cs */ 60353062Sbrian p->desc.UpdateSet = ether_UpdateSet; 60453062Sbrian p->desc.IsSet = ether_IsSet; 60553062Sbrian p->desc.Read = ether_DescriptorRead; 60653733Sbrian 60753733Sbrian memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 60853733Sbrian switch (p->cfg.cd.necessity) { 60953733Sbrian case CD_VARIABLE: 61053733Sbrian dev->dev.cd.delay = p->cfg.cd.delay; 61153733Sbrian break; 61253733Sbrian case CD_REQUIRED: 61353733Sbrian dev->dev.cd = p->cfg.cd; 61453733Sbrian break; 61553733Sbrian case CD_NOTREQUIRED: 61653733Sbrian log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n", 61753733Sbrian p->link.name, dev->dev.cd.delay); 61853733Sbrian case CD_DEFAULT: 61953733Sbrian break; 62053733Sbrian } 62153733Sbrian 62253733Sbrian dev->timeout = dev->dev.cd.delay; 62353733Sbrian dev->connected = CARRIER_PENDING; 62453733Sbrian 62552942Sbrian } else { 62652942Sbrian /* See if we're a netgraph socket */ 62771006Sbrian struct stat st; 62852942Sbrian 62971006Sbrian if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) { 63071006Sbrian struct sockaddr_storage ssock; 63171006Sbrian struct sockaddr *sock = (struct sockaddr *)&ssock; 63271006Sbrian int sz; 63352942Sbrian 63471006Sbrian sz = sizeof ssock; 63571006Sbrian if (getsockname(p->fd, sock, &sz) == -1) { 63671006Sbrian log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name); 63771006Sbrian close(p->fd); 63871006Sbrian p->fd = -1; 63952942Sbrian return NULL; 64052942Sbrian } 64152942Sbrian 64271006Sbrian if (sock->sa_family == AF_NETGRAPH) { 64371006Sbrian /* 64471006Sbrian * It's a netgraph node... We can't determine hook names etc, so we 64571006Sbrian * stay pretty impartial.... 64671006Sbrian */ 64771006Sbrian log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name); 64871006Sbrian 64971006Sbrian if ((dev = malloc(sizeof *dev)) == NULL) { 65071006Sbrian log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n", 65171006Sbrian p->link.name, strerror(errno)); 65271006Sbrian return NULL; 65371006Sbrian } 65471006Sbrian 65571006Sbrian memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 65671006Sbrian dev->cs = -1; 65771006Sbrian dev->timeout = 0; 65871006Sbrian dev->connected = CARRIER_OK; 65971006Sbrian *dev->hook = '\0'; 66071006Sbrian } 66152942Sbrian } 66252942Sbrian } 66352942Sbrian 66452942Sbrian if (dev) { 66552942Sbrian physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 66652942Sbrian 66752942Sbrian /* Moan about (and fix) invalid LCP configurations */ 66852942Sbrian if (p->link.lcp.cfg.mru > 1492) { 66952942Sbrian log_Printf(LogWARN, "%s: Reducing MRU to 1492\n", p->link.name); 67052942Sbrian p->link.lcp.cfg.mru = 1492; 67152942Sbrian } 67252942Sbrian if (p->dl->bundle->cfg.mtu > 1492) { 67352942Sbrian log_Printf(LogWARN, "%s: Reducing MTU to 1492\n", p->link.name); 67452942Sbrian p->dl->bundle->cfg.mtu = 1492; 67552942Sbrian } 67652942Sbrian 67752942Sbrian return &dev->dev; 67852942Sbrian } 67952942Sbrian 68052942Sbrian return NULL; 68152942Sbrian} 682