ether.c revision 81634
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 81634 2001-08-14 16:05:52Z 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> 3774916Sbrian#include <net/if.h> 3874916Sbrian#include <net/route.h> 3952942Sbrian#include <netinet/in_systm.h> 4052942Sbrian#include <netinet/ip.h> 4152942Sbrian#include <netgraph/ng_ether.h> 4252942Sbrian#include <netgraph/ng_message.h> 4352942Sbrian#include <netgraph/ng_pppoe.h> 4452942Sbrian#include <netgraph/ng_socket.h> 4552942Sbrian 4652942Sbrian#include <errno.h> 4752942Sbrian#include <stdio.h> 4852942Sbrian#include <stdlib.h> 4952942Sbrian#include <string.h> 5052942Sbrian#include <sysexits.h> 5152942Sbrian#include <sys/fcntl.h> 5252942Sbrian#if defined(__FreeBSD__) && !defined(NOKLDLOAD) 5352942Sbrian#include <sys/linker.h> 5453241Sbrian#include <sys/module.h> 5552942Sbrian#endif 5671006Sbrian#include <sys/stat.h> 5752942Sbrian#include <sys/uio.h> 5852942Sbrian#include <termios.h> 5952942Sbrian#include <sys/time.h> 6052942Sbrian#include <unistd.h> 6152942Sbrian 6252942Sbrian#include "layer.h" 6352942Sbrian#include "defs.h" 6452942Sbrian#include "mbuf.h" 6552942Sbrian#include "log.h" 6652942Sbrian#include "timer.h" 6752942Sbrian#include "lqr.h" 6852942Sbrian#include "hdlc.h" 6952942Sbrian#include "throughput.h" 7052942Sbrian#include "fsm.h" 7152942Sbrian#include "lcp.h" 7252942Sbrian#include "ccp.h" 7352942Sbrian#include "link.h" 7452942Sbrian#include "async.h" 7552942Sbrian#include "descriptor.h" 7652942Sbrian#include "physical.h" 7752942Sbrian#include "main.h" 7852942Sbrian#include "mp.h" 7952942Sbrian#include "chat.h" 8052942Sbrian#include "auth.h" 8152942Sbrian#include "chap.h" 8252942Sbrian#include "cbcp.h" 8352942Sbrian#include "datalink.h" 8452942Sbrian#include "slcompress.h" 8552942Sbrian#include "iplist.h" 8681634Sbrian#include "ncpaddr.h" 8781634Sbrian#include "ip.h" 8852942Sbrian#include "ipcp.h" 8952942Sbrian#include "filter.h" 9052942Sbrian#ifndef NORADIUS 9152942Sbrian#include "radius.h" 9252942Sbrian#endif 9381634Sbrian#include "ipv6cp.h" 9481634Sbrian#include "ncp.h" 9552942Sbrian#include "bundle.h" 9652942Sbrian#include "id.h" 9774916Sbrian#include "iface.h" 9852942Sbrian#include "ether.h" 9952942Sbrian 10052942Sbrian 10152942Sbrian#define PPPOE_NODE_TYPE_LEN (sizeof NG_PPPOE_NODE_TYPE - 1) /* "PPPoE" */ 10252942Sbrian 10352942Sbrianstruct etherdevice { 10452942Sbrian struct device dev; /* What struct physical knows about */ 10552942Sbrian int cs; /* Control socket */ 10652942Sbrian int connected; /* Are we connected yet ? */ 10752942Sbrian int timeout; /* Seconds attempting to connect */ 10852942Sbrian char hook[sizeof TUN_NAME + 11]; /* Our socket node hook */ 10952942Sbrian}; 11052942Sbrian 11152942Sbrian#define device2ether(d) \ 11252942Sbrian ((d)->type == ETHER_DEVICE ? (struct etherdevice *)d : NULL) 11352942Sbrian 11452942Sbrianint 11552942Sbrianether_DeviceSize(void) 11652942Sbrian{ 11752942Sbrian return sizeof(struct etherdevice); 11852942Sbrian} 11952942Sbrian 12052942Sbrianstatic ssize_t 12152942Sbrianether_Write(struct physical *p, const void *v, size_t n) 12252942Sbrian{ 12352942Sbrian struct etherdevice *dev = device2ether(p->handler); 12452942Sbrian 12552942Sbrian return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : n; 12652942Sbrian} 12752942Sbrian 12852942Sbrianstatic ssize_t 12952942Sbrianether_Read(struct physical *p, void *v, size_t n) 13052942Sbrian{ 13152942Sbrian char hook[sizeof TUN_NAME + 11]; 13252942Sbrian 13352942Sbrian return NgRecvData(p->fd, v, n, hook); 13452942Sbrian} 13552942Sbrian 13652942Sbrianstatic int 13752942Sbrianether_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e) 13852942Sbrian{ 13952942Sbrian struct etherdevice *dev = device2ether(p->handler); 14052942Sbrian int result; 14152942Sbrian 14252942Sbrian if (r && dev->cs >= 0 && FD_ISSET(dev->cs, r)) { 14352942Sbrian FD_CLR(dev->cs, r); 14452942Sbrian log_Printf(LogTIMER, "%s: fdunset(ctrl) %d\n", p->link.name, dev->cs); 14552942Sbrian result = 1; 14652942Sbrian } else 14752942Sbrian result = 0; 14852942Sbrian 14952942Sbrian /* Careful... physical_RemoveFromSet() called us ! */ 15052942Sbrian 15152942Sbrian p->handler->removefromset = NULL; 15252942Sbrian result += physical_RemoveFromSet(p, r, w, e); 15352942Sbrian p->handler->removefromset = ether_RemoveFromSet; 15452942Sbrian 15552942Sbrian return result; 15652942Sbrian} 15752942Sbrian 15852942Sbrianstatic void 15952942Sbrianether_Free(struct physical *p) 16052942Sbrian{ 16152942Sbrian struct etherdevice *dev = device2ether(p->handler); 16252942Sbrian 16352942Sbrian physical_SetDescriptor(p); 16452942Sbrian if (dev->cs != -1) 16552942Sbrian close(dev->cs); 16652942Sbrian free(dev); 16752942Sbrian} 16852942Sbrian 16952942Sbrianstatic const char * 17052942Sbrianether_OpenInfo(struct physical *p) 17152942Sbrian{ 17252942Sbrian struct etherdevice *dev = device2ether(p->handler); 17352942Sbrian 17452942Sbrian switch (dev->connected) { 17552942Sbrian case CARRIER_PENDING: 17652942Sbrian return "negotiating"; 17752942Sbrian case CARRIER_OK: 17852942Sbrian return "established"; 17952942Sbrian } 18052942Sbrian 18152942Sbrian return "disconnected"; 18252942Sbrian} 18352942Sbrian 18452942Sbrianstatic void 18552942Sbrianether_device2iov(struct device *d, struct iovec *iov, int *niov, 18653684Sbrian int maxiov, int *auxfd, int *nauxfd) 18752942Sbrian{ 18852942Sbrian struct etherdevice *dev = device2ether(d); 18952942Sbrian int sz = physical_MaxDeviceSize(); 19052942Sbrian 19152942Sbrian iov[*niov].iov_base = realloc(d, sz); 19252942Sbrian if (iov[*niov].iov_base == NULL) { 19352942Sbrian log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); 19452942Sbrian AbortProgram(EX_OSERR); 19552942Sbrian } 19652942Sbrian iov[*niov].iov_len = sz; 19752942Sbrian (*niov)++; 19852942Sbrian 19952942Sbrian if (dev->cs >= 0) { 20052942Sbrian *auxfd = dev->cs; 20152942Sbrian (*nauxfd)++; 20252942Sbrian } 20352942Sbrian} 20452942Sbrian 20552942Sbrianstatic void 20652942Sbrianether_MessageIn(struct etherdevice *dev) 20752942Sbrian{ 20852942Sbrian char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)]; 20952942Sbrian struct ng_mesg *rep = (struct ng_mesg *)msgbuf; 21052942Sbrian struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep); 21152942Sbrian char unknown[14]; 21252942Sbrian const char *msg; 21352942Sbrian struct timeval t; 21466898Sbrian fd_set *r; 21566898Sbrian int ret; 21652942Sbrian 21752942Sbrian if (dev->cs < 0) 21852942Sbrian return; 21952942Sbrian 22066898Sbrian if ((r = mkfdset()) == NULL) { 22166898Sbrian log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n"); 22266898Sbrian return; 22366898Sbrian } 22466898Sbrian zerofdset(r); 22566898Sbrian FD_SET(dev->cs, r); 22652942Sbrian t.tv_sec = t.tv_usec = 0; 22766898Sbrian ret = select(dev->cs + 1, r, NULL, NULL, &t); 22866898Sbrian free(r); 22966898Sbrian 23066898Sbrian if (ret <= 0) 23152942Sbrian return; 23252942Sbrian 23352942Sbrian if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) < 0) 23452942Sbrian return; 23552942Sbrian 23652942Sbrian if (rep->header.version != NG_VERSION) { 23752942Sbrian log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n", 23852942Sbrian (long)rep->header.version, (long)NG_VERSION); 23952942Sbrian return; 24052942Sbrian } 24152942Sbrian 24252942Sbrian if (rep->header.typecookie != NGM_PPPOE_COOKIE) { 24352942Sbrian log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n", 24452942Sbrian (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE); 24552942Sbrian return; 24652942Sbrian } 24752942Sbrian 24852942Sbrian switch (rep->header.cmd) { 24952942Sbrian case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break; 25052942Sbrian case NGM_PPPOE_CONNECT: msg = "CONNECT"; break; 25152942Sbrian case NGM_PPPOE_LISTEN: msg = "LISTEN"; break; 25252942Sbrian case NGM_PPPOE_OFFER: msg = "OFFER"; break; 25352942Sbrian case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break; 25452942Sbrian case NGM_PPPOE_FAIL: msg = "FAIL"; break; 25552942Sbrian case NGM_PPPOE_CLOSE: msg = "CLOSE"; break; 25652942Sbrian case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break; 25752942Sbrian default: 25852942Sbrian snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd); 25952942Sbrian msg = unknown; 26052942Sbrian break; 26152942Sbrian } 26252942Sbrian 26352942Sbrian log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%s\")\n", msg, sts->hook); 26452942Sbrian 26552942Sbrian switch (rep->header.cmd) { 26652942Sbrian case NGM_PPPOE_SUCCESS: 26752942Sbrian dev->connected = CARRIER_OK; 26852942Sbrian break; 26952942Sbrian case NGM_PPPOE_FAIL: 27052942Sbrian case NGM_PPPOE_CLOSE: 27152942Sbrian dev->connected = CARRIER_LOST; 27252942Sbrian break; 27352942Sbrian } 27452942Sbrian} 27552942Sbrian 27652942Sbrianstatic int 27752942Sbrianether_AwaitCarrier(struct physical *p) 27852942Sbrian{ 27952942Sbrian struct etherdevice *dev = device2ether(p->handler); 28052942Sbrian 28153071Sbrian if (dev->connected != CARRIER_OK && !dev->timeout--) 28252942Sbrian dev->connected = CARRIER_LOST; 28352942Sbrian else if (dev->connected == CARRIER_PENDING) 28452942Sbrian ether_MessageIn(dev); 28552942Sbrian 28652942Sbrian return dev->connected; 28752942Sbrian} 28852942Sbrian 28952942Sbrianstatic const struct device baseetherdevice = { 29052942Sbrian ETHER_DEVICE, 29152942Sbrian "ether", 29278410Sbrian 1492, 29353733Sbrian { CD_REQUIRED, DEF_ETHERCDDELAY }, 29452942Sbrian ether_AwaitCarrier, 29552942Sbrian ether_RemoveFromSet, 29652942Sbrian NULL, 29752942Sbrian NULL, 29852942Sbrian NULL, 29952942Sbrian NULL, 30052942Sbrian ether_Free, 30152942Sbrian ether_Read, 30252942Sbrian ether_Write, 30352942Sbrian ether_device2iov, 30452942Sbrian NULL, 30552942Sbrian ether_OpenInfo 30652942Sbrian}; 30752942Sbrian 30852942Sbrianstruct device * 30952942Sbrianether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, 31052942Sbrian int maxiov, int *auxfd, int *nauxfd) 31152942Sbrian{ 31252942Sbrian if (type == ETHER_DEVICE) { 31352942Sbrian struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base; 31452942Sbrian 31552942Sbrian dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ 31652942Sbrian if (dev == NULL) { 31752942Sbrian log_Printf(LogALERT, "Failed to allocate memory: %d\n", 31852942Sbrian (int)(sizeof *dev)); 31952942Sbrian AbortProgram(EX_OSERR); 32052942Sbrian } 32152942Sbrian 32252942Sbrian if (*nauxfd) { 32352942Sbrian dev->cs = *auxfd; 32452942Sbrian (*nauxfd)--; 32552942Sbrian } else 32652942Sbrian dev->cs = -1; 32752942Sbrian 32852942Sbrian /* Refresh function pointers etc */ 32952942Sbrian memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 33052942Sbrian 33152942Sbrian physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 33252942Sbrian return &dev->dev; 33352942Sbrian } 33452942Sbrian 33552942Sbrian return NULL; 33652942Sbrian} 33752942Sbrian 33852942Sbrianstatic int 33958028Sbrianether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n) 34052942Sbrian{ 34152942Sbrian struct physical *p = descriptor2physical(d); 34252942Sbrian struct etherdevice *dev = device2ether(p->handler); 34352942Sbrian int result; 34452942Sbrian 34552942Sbrian if (r && dev->cs >= 0) { 34652942Sbrian FD_SET(dev->cs, r); 34752942Sbrian log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs); 34852942Sbrian result = 1; 34952942Sbrian } else 35052942Sbrian result = 0; 35152942Sbrian 35252942Sbrian result += physical_doUpdateSet(d, r, w, e, n, 0); 35352942Sbrian 35452942Sbrian return result; 35552942Sbrian} 35652942Sbrian 35752942Sbrianstatic int 35858028Sbrianether_IsSet(struct fdescriptor *d, const fd_set *fdset) 35952942Sbrian{ 36052942Sbrian struct physical *p = descriptor2physical(d); 36152942Sbrian struct etherdevice *dev = device2ether(p->handler); 36252942Sbrian int result; 36352942Sbrian 36452942Sbrian result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset); 36552942Sbrian result += physical_IsSet(d, fdset); 36652942Sbrian 36752942Sbrian return result; 36852942Sbrian} 36952942Sbrian 37052942Sbrianstatic void 37158028Sbrianether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle, 37252942Sbrian const fd_set *fdset) 37352942Sbrian{ 37452942Sbrian struct physical *p = descriptor2physical(d); 37552942Sbrian struct etherdevice *dev = device2ether(p->handler); 37652942Sbrian 37752942Sbrian if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) { 37852942Sbrian ether_MessageIn(dev); 37952942Sbrian if (dev->connected == CARRIER_LOST) { 38052942Sbrian log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name); 38152942Sbrian datalink_Down(p->dl, CLOSE_NORMAL); 38252942Sbrian return; 38352942Sbrian } 38452942Sbrian } 38552942Sbrian 38652942Sbrian if (physical_IsSet(d, fdset)) 38752942Sbrian physical_DescriptorRead(d, bundle, fdset); 38852942Sbrian} 38952942Sbrian 39052942Sbrianstatic struct device * 39152942Sbrianether_Abandon(struct etherdevice *dev, struct physical *p) 39252942Sbrian{ 39352942Sbrian /* Abandon our node construction */ 39452942Sbrian close(dev->cs); 39552942Sbrian close(p->fd); 39652942Sbrian p->fd = -2; /* Nobody else need try.. */ 39752942Sbrian free(dev); 39852942Sbrian 39952942Sbrian return NULL; 40052942Sbrian} 40152942Sbrian 40252942Sbrianstruct device * 40352942Sbrianether_Create(struct physical *p) 40452942Sbrian{ 40552942Sbrian u_char rbuf[2048]; 40652942Sbrian struct etherdevice *dev; 40752942Sbrian struct ng_mesg *resp; 40852942Sbrian const struct hooklist *hlist; 40952942Sbrian const struct nodeinfo *ninfo; 41074916Sbrian char *path; 41174916Sbrian int ifacelen, f; 41252942Sbrian 41352942Sbrian dev = NULL; 41474916Sbrian path = NULL; 41574916Sbrian ifacelen = 0; 41652942Sbrian if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE, 41752942Sbrian PPPOE_NODE_TYPE_LEN) && 41852942Sbrian p->name.full[PPPOE_NODE_TYPE_LEN] == ':') { 41952942Sbrian const struct linkinfo *nlink; 42052942Sbrian struct ngpppoe_init_data *data; 42152942Sbrian struct ngm_mkpeer mkp; 42252942Sbrian struct ngm_connect ngc; 42352942Sbrian const char *iface, *provider; 42474916Sbrian char etherid[12]; 42574916Sbrian int providerlen; 42652942Sbrian char connectpath[sizeof dev->hook + 2]; /* .:<hook> */ 42752942Sbrian 42852942Sbrian p->fd--; /* We own the device - change fd */ 42952942Sbrian 43053241Sbrian#if defined(__FreeBSD__) && !defined(NOKLDLOAD) 43175252Sbrian if (modfind("netgraph") == -1 && ID0kldload("netgraph") == -1) { 43275252Sbrian log_Printf(LogWARN, "kldload: netgraph: %s\n", strerror(errno)); 43352942Sbrian return NULL; 43452942Sbrian } 43552942Sbrian 43662209Sbrian if (modfind("ng_ether") == -1 && ID0kldload("ng_ether") == -1) 43762209Sbrian /* 43862209Sbrian * Don't treat this as an error as older kernels have this stuff 43962209Sbrian * built in as part of the netgraph node itself. 44062209Sbrian */ 44162209Sbrian log_Printf(LogWARN, "kldload: ng_ether: %s\n", strerror(errno)); 44262209Sbrian 44375376Sbrian if (modfind("ng_pppoe") == -1 && ID0kldload("ng_pppoe") == -1) { 44475376Sbrian log_Printf(LogWARN, "kldload: ng_pppoe: %s\n", strerror(errno)); 44575376Sbrian return NULL; 44675376Sbrian } 44775376Sbrian 44862209Sbrian if (modfind("ng_socket") == -1 && ID0kldload("ng_socket") == -1) { 44952942Sbrian log_Printf(LogWARN, "kldload: ng_socket: %s\n", strerror(errno)); 45052942Sbrian return NULL; 45152942Sbrian } 45252942Sbrian#endif 45352942Sbrian 45452942Sbrian if ((dev = malloc(sizeof *dev)) == NULL) 45552942Sbrian return NULL; 45652942Sbrian 45752942Sbrian iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1; 45852942Sbrian 45952942Sbrian provider = strchr(iface, ':'); 46052942Sbrian if (provider) { 46152942Sbrian ifacelen = provider - iface; 46252942Sbrian provider++; 46352942Sbrian providerlen = strlen(provider); 46452942Sbrian } else { 46552942Sbrian ifacelen = strlen(iface); 46652942Sbrian provider = ""; 46752942Sbrian providerlen = 0; 46852942Sbrian } 46952942Sbrian 47052942Sbrian /* 47152942Sbrian * We're going to do this (where tunN is our tunnel device): 47252942Sbrian * 47352942Sbrian * .---------. 47452942Sbrian * | ether | 47552942Sbrian * | <iface> | dev->cs 47652942Sbrian * `---------' | 47752942Sbrian * (orphan) p->fd | 47852942Sbrian * | | | 47952942Sbrian * | | | 48052942Sbrian * (ethernet) | | 48152942Sbrian * .---------. .-----------. 48252942Sbrian * | pppoe | | socket | 48352942Sbrian * | <iface> |(tunN)<---->(tunN)| <unnamed> | 48452942Sbrian * `--------- `-----------' 48552942Sbrian * (tunX) 48652942Sbrian * ^ 48752942Sbrian * | 48852942Sbrian * `--->(tunX) 48952942Sbrian */ 49052942Sbrian 49152942Sbrian /* Create a socket node */ 49253535Sbrian if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) { 49352942Sbrian log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n", 49452942Sbrian strerror(errno)); 49552942Sbrian free(dev); 49652942Sbrian return NULL; 49752942Sbrian } 49852942Sbrian 49952942Sbrian /* 50052942Sbrian * Ask for a list of hooks attached to the "ether" node. This node should 50152942Sbrian * magically exist as a way of hooking stuff onto an ethernet device 50252942Sbrian */ 50352942Sbrian path = (char *)alloca(ifacelen + 2); 50452942Sbrian sprintf(path, "%.*s:", ifacelen, iface); 50552942Sbrian if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS, 50652942Sbrian NULL, 0) < 0) { 50752942Sbrian log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n", 50852942Sbrian path, strerror(errno)); 50952942Sbrian return ether_Abandon(dev, p); 51052942Sbrian } 51152942Sbrian 51252942Sbrian /* Get our list back */ 51352942Sbrian resp = (struct ng_mesg *)rbuf; 51452942Sbrian if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) < 0) { 51552942Sbrian log_Printf(LogWARN, "Cannot get netgraph response: %s\n", 51652942Sbrian strerror(errno)); 51752942Sbrian return ether_Abandon(dev, p); 51852942Sbrian } 51952942Sbrian 52052942Sbrian hlist = (const struct hooklist *)resp->data; 52152942Sbrian ninfo = &hlist->nodeinfo; 52252942Sbrian 52352942Sbrian /* Make sure we've got the right type of node */ 52452942Sbrian if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE, 52552942Sbrian sizeof NG_ETHER_NODE_TYPE - 1)) { 52652942Sbrian log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``" 52752942Sbrian NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type); 52852942Sbrian return ether_Abandon(dev, p); 52952942Sbrian } 53052942Sbrian 53152963Sbrian log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n", 53252942Sbrian path, ninfo->id); 53352942Sbrian 53452942Sbrian /* look for a hook already attached. */ 53552942Sbrian for (f = 0; f < ninfo->hooks; f++) { 53652942Sbrian nlink = &hlist->link[f]; 53752942Sbrian 53852942Sbrian log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook, 53952942Sbrian nlink->peerhook); 54052942Sbrian 54152942Sbrian if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) || 54252942Sbrian !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) { 54352942Sbrian /* 54452942Sbrian * Something is using the data coming out of this ``ether'' node. 54552942Sbrian * If it's a PPPoE node, we use that node, otherwise we complain that 54652942Sbrian * someone else is using the node. 54752942Sbrian */ 54852942Sbrian if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE)) 54952942Sbrian /* Use this PPPoE node ! */ 55052963Sbrian snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id); 55152942Sbrian else { 55252942Sbrian log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n", 55352942Sbrian path, nlink->nodeinfo.type); 55452942Sbrian return ether_Abandon(dev, p); 55552942Sbrian } 55652942Sbrian break; 55752942Sbrian } 55852942Sbrian } 55952942Sbrian 56052942Sbrian if (f == ninfo->hooks) { 56152942Sbrian /* 56252942Sbrian * Create a new ``PPPoE'' node connected to the ``ether'' node using 56352942Sbrian * the magic ``orphan'' and ``ethernet'' hooks 56452942Sbrian */ 56552942Sbrian snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE); 56652942Sbrian snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN); 56752942Sbrian snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET); 56852963Sbrian snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id); 56952942Sbrian 57052942Sbrian log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n", 57152942Sbrian etherid, mkp.ourhook, mkp.peerhook); 57252942Sbrian 57352942Sbrian if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE, 57452942Sbrian NGM_MKPEER, &mkp, sizeof mkp) < 0) { 57552942Sbrian log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n", 57652942Sbrian etherid, strerror(errno)); 57752942Sbrian return ether_Abandon(dev, p); 57852942Sbrian } 57952942Sbrian 58052942Sbrian snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN); 58152942Sbrian } 58252942Sbrian 58352942Sbrian snprintf(dev->hook, sizeof dev->hook, "%s%d", 58452942Sbrian TUN_NAME, p->dl->bundle->unit); 58552942Sbrian 58652942Sbrian /* 58752942Sbrian * Connect the PPPoE node to our socket node. 58852942Sbrian * ngc.path has already been set up 58952942Sbrian */ 59052942Sbrian snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook); 59152942Sbrian memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook); 59252942Sbrian 59352942Sbrian log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n", 59452942Sbrian ngc.ourhook, ngc.path, ngc.peerhook); 59552942Sbrian if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE, 59652942Sbrian NGM_CONNECT, &ngc, sizeof ngc) < 0) { 59752942Sbrian log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph " 59852942Sbrian "nodes: %s\n", strerror(errno)); 59952942Sbrian return ether_Abandon(dev, p); 60052942Sbrian } 60152942Sbrian 60279854Sbrian /* Bring the Ethernet interface up */ 60379854Sbrian path[ifacelen] = '\0'; /* Remove the trailing ':' */ 60479854Sbrian if (!iface_SetFlags(path, IFF_UP)) 60579854Sbrian log_Printf(LogWARN, "%s: Failed to set the IFF_UP flag on %s\n", 60679854Sbrian p->link.name, path); 60779854Sbrian 60852942Sbrian /* And finally, request a connection to the given provider */ 60952942Sbrian 61068032Sbrian data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen); 61152942Sbrian snprintf(data->hook, sizeof data->hook, "%s", dev->hook); 61268846Sbrian memcpy(data->data, provider, providerlen); 61368846Sbrian data->data_len = providerlen; 61452942Sbrian 61552942Sbrian snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook); 61652942Sbrian log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath); 61752942Sbrian if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE, 61852942Sbrian NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) { 61952942Sbrian log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n", 62052942Sbrian connectpath, strerror(errno)); 62152942Sbrian return ether_Abandon(dev, p); 62252942Sbrian } 62352942Sbrian 62453062Sbrian /* Hook things up so that we monitor dev->cs */ 62553062Sbrian p->desc.UpdateSet = ether_UpdateSet; 62653062Sbrian p->desc.IsSet = ether_IsSet; 62753062Sbrian p->desc.Read = ether_DescriptorRead; 62853733Sbrian 62953733Sbrian memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 63053733Sbrian switch (p->cfg.cd.necessity) { 63153733Sbrian case CD_VARIABLE: 63253733Sbrian dev->dev.cd.delay = p->cfg.cd.delay; 63353733Sbrian break; 63453733Sbrian case CD_REQUIRED: 63553733Sbrian dev->dev.cd = p->cfg.cd; 63653733Sbrian break; 63753733Sbrian case CD_NOTREQUIRED: 63853733Sbrian log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n", 63953733Sbrian p->link.name, dev->dev.cd.delay); 64053733Sbrian case CD_DEFAULT: 64153733Sbrian break; 64253733Sbrian } 64353733Sbrian 64453733Sbrian dev->timeout = dev->dev.cd.delay; 64553733Sbrian dev->connected = CARRIER_PENDING; 64653733Sbrian 64752942Sbrian } else { 64852942Sbrian /* See if we're a netgraph socket */ 64971006Sbrian struct stat st; 65052942Sbrian 65171006Sbrian if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) { 65271006Sbrian struct sockaddr_storage ssock; 65371006Sbrian struct sockaddr *sock = (struct sockaddr *)&ssock; 65471006Sbrian int sz; 65552942Sbrian 65671006Sbrian sz = sizeof ssock; 65771006Sbrian if (getsockname(p->fd, sock, &sz) == -1) { 65871006Sbrian log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name); 65971006Sbrian close(p->fd); 66071006Sbrian p->fd = -1; 66152942Sbrian return NULL; 66252942Sbrian } 66352942Sbrian 66471006Sbrian if (sock->sa_family == AF_NETGRAPH) { 66571006Sbrian /* 66671006Sbrian * It's a netgraph node... We can't determine hook names etc, so we 66771006Sbrian * stay pretty impartial.... 66871006Sbrian */ 66971006Sbrian log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name); 67071006Sbrian 67171006Sbrian if ((dev = malloc(sizeof *dev)) == NULL) { 67271006Sbrian log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n", 67371006Sbrian p->link.name, strerror(errno)); 67471006Sbrian return NULL; 67571006Sbrian } 67671006Sbrian 67771006Sbrian memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev); 67871006Sbrian dev->cs = -1; 67971006Sbrian dev->timeout = 0; 68071006Sbrian dev->connected = CARRIER_OK; 68171006Sbrian *dev->hook = '\0'; 68271006Sbrian } 68352942Sbrian } 68452942Sbrian } 68552942Sbrian 68652942Sbrian if (dev) { 68752942Sbrian physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF); 68852942Sbrian return &dev->dev; 68952942Sbrian } 69052942Sbrian 69152942Sbrian return NULL; 69252942Sbrian} 693