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-rw-r--r--src/ether.c737
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diff --git a/src/ether.c b/src/ether.c
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+++ b/src/ether.c
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+/*-
+ * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: src/usr.sbin/ppp/ether.c,v 1.30.10.1.4.1 2010/12/21 17:10:29 kensmith Exp $
+ */
+
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <netgraph.h>
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <net/route.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netgraph/ng_ether.h>
+#include <netgraph/ng_message.h>
+#include <netgraph/ng_pppoe.h>
+#include <netgraph/ng_socket.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <sys/fcntl.h>
+#include <sys/stat.h>
+#include <sys/uio.h>
+#include <termios.h>
+#include <sys/time.h>
+#include <syslog.h>
+#include <unistd.h>
+
+#include "layer.h"
+#include "defs.h"
+#include "mbuf.h"
+#include "log.h"
+#include "timer.h"
+#include "lqr.h"
+#include "hdlc.h"
+#include "throughput.h"
+#include "fsm.h"
+#include "lcp.h"
+#include "ccp.h"
+#include "link.h"
+#include "async.h"
+#include "descriptor.h"
+#include "physical.h"
+#include "main.h"
+#include "mp.h"
+#include "chat.h"
+#include "auth.h"
+#include "chap.h"
+#include "cbcp.h"
+#include "datalink.h"
+#include "slcompress.h"
+#include "iplist.h"
+#include "ncpaddr.h"
+#include "ip.h"
+#include "ipcp.h"
+#include "filter.h"
+#ifndef NORADIUS
+#include "radius.h"
+#endif
+#include "ipv6cp.h"
+#include "ncp.h"
+#include "bundle.h"
+#include "id.h"
+#include "iface.h"
+#include "route.h"
+#include "ether.h"
+
+
+#define PPPOE_NODE_TYPE_LEN (sizeof NG_PPPOE_NODE_TYPE - 1) /* "PPPoE" */
+
+struct etherdevice {
+ struct device dev; /* What struct physical knows about */
+ int cs; /* Control socket */
+ int connected; /* Are we connected yet ? */
+ int timeout; /* Seconds attempting to connect */
+ char hook[sizeof TUN_NAME + 11]; /* Our socket node hook */
+ u_int32_t slot; /* ifindex << 24 | unit */
+};
+
+#define device2ether(d) \
+ ((d)->type == ETHER_DEVICE ? (struct etherdevice *)d : NULL)
+
+unsigned
+ether_DeviceSize(void)
+{
+ return sizeof(struct etherdevice);
+}
+
+static ssize_t
+ether_Write(struct physical *p, const void *v, size_t n)
+{
+ struct etherdevice *dev = device2ether(p->handler);
+
+ return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : (ssize_t)n;
+}
+
+static ssize_t
+ether_Read(struct physical *p, void *v, size_t n)
+{
+ char hook[sizeof TUN_NAME + 11];
+
+ return NgRecvData(p->fd, v, n, hook);
+}
+
+static int
+ether_RemoveFromSet(struct physical *p, fd_set *r, fd_set *w, fd_set *e)
+{
+ struct etherdevice *dev = device2ether(p->handler);
+ int result;
+
+ if (r && dev->cs >= 0 && FD_ISSET(dev->cs, r)) {
+ FD_CLR(dev->cs, r);
+ log_Printf(LogTIMER, "%s: fdunset(ctrl) %d\n", p->link.name, dev->cs);
+ result = 1;
+ } else
+ result = 0;
+
+ /* Careful... physical_RemoveFromSet() called us ! */
+
+ p->handler->removefromset = NULL;
+ result += physical_RemoveFromSet(p, r, w, e);
+ p->handler->removefromset = ether_RemoveFromSet;
+
+ return result;
+}
+
+static void
+ether_Free(struct physical *p)
+{
+ struct etherdevice *dev = device2ether(p->handler);
+
+ physical_SetDescriptor(p);
+ if (dev->cs != -1)
+ close(dev->cs);
+ free(dev);
+}
+
+static const char *
+ether_OpenInfo(struct physical *p)
+{
+ struct etherdevice *dev = device2ether(p->handler);
+
+ switch (dev->connected) {
+ case CARRIER_PENDING:
+ return "negotiating";
+ case CARRIER_OK:
+ return "established";
+ }
+
+ return "disconnected";
+}
+
+static int
+ether_Slot(struct physical *p)
+{
+ struct etherdevice *dev = device2ether(p->handler);
+
+ return dev->slot;
+}
+
+
+static void
+ether_device2iov(struct device *d, struct iovec *iov, int *niov,
+ int maxiov __unused, int *auxfd, int *nauxfd)
+{
+ struct etherdevice *dev;
+ int sz = physical_MaxDeviceSize();
+
+ iov[*niov].iov_base = d = realloc(d, sz);
+ if (d == NULL) {
+ log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz);
+ AbortProgram(EX_OSERR);
+ }
+ iov[*niov].iov_len = sz;
+ (*niov)++;
+
+ dev = device2ether(d);
+ if (dev->cs >= 0) {
+ *auxfd = dev->cs;
+ (*nauxfd)++;
+ }
+}
+
+static void
+ether_MessageIn(struct etherdevice *dev)
+{
+ char msgbuf[sizeof(struct ng_mesg) + sizeof(struct ngpppoe_sts)];
+ struct ng_mesg *rep = (struct ng_mesg *)msgbuf;
+ struct ngpppoe_sts *sts = (struct ngpppoe_sts *)(msgbuf + sizeof *rep);
+ char *end, unknown[14], sessionid[5];
+ const char *msg;
+ struct timeval t;
+ fd_set *r;
+ u_long slot;
+ int asciilen, ret;
+
+ if (dev->cs < 0)
+ return;
+
+ if ((r = mkfdset()) == NULL) {
+ log_Printf(LogERROR, "DoLoop: Cannot create fd_set\n");
+ return;
+ }
+
+ while (1) {
+ zerofdset(r);
+ FD_SET(dev->cs, r);
+ t.tv_sec = t.tv_usec = 0;
+ ret = select(dev->cs + 1, r, NULL, NULL, &t);
+
+ if (ret <= 0)
+ break;
+
+ if (NgRecvMsg(dev->cs, rep, sizeof msgbuf, NULL) <= 0)
+ break;
+
+ if (rep->header.version != NG_VERSION) {
+ log_Printf(LogWARN, "%ld: Unexpected netgraph version, expected %ld\n",
+ (long)rep->header.version, (long)NG_VERSION);
+ break;
+ }
+
+ if (rep->header.typecookie != NGM_PPPOE_COOKIE) {
+ log_Printf(LogWARN, "%ld: Unexpected netgraph cookie, expected %ld\n",
+ (long)rep->header.typecookie, (long)NGM_PPPOE_COOKIE);
+ break;
+ }
+
+ asciilen = 0;
+ switch (rep->header.cmd) {
+ case NGM_PPPOE_SET_FLAG: msg = "SET_FLAG"; break;
+ case NGM_PPPOE_CONNECT: msg = "CONNECT"; break;
+ case NGM_PPPOE_LISTEN: msg = "LISTEN"; break;
+ case NGM_PPPOE_OFFER: msg = "OFFER"; break;
+ case NGM_PPPOE_SUCCESS: msg = "SUCCESS"; break;
+ case NGM_PPPOE_FAIL: msg = "FAIL"; break;
+ case NGM_PPPOE_CLOSE: msg = "CLOSE"; break;
+ case NGM_PPPOE_GET_STATUS: msg = "GET_STATUS"; break;
+ case NGM_PPPOE_ACNAME:
+ msg = "ACNAME";
+ if (setenv("ACNAME", sts->hook, 1) != 0)
+ log_Printf(LogWARN, "setenv: cannot set ACNAME=%s: %m", sts->hook);
+ asciilen = rep->header.arglen;
+ break;
+ case NGM_PPPOE_SESSIONID:
+ msg = "SESSIONID";
+ snprintf(sessionid, sizeof sessionid, "%04x", *(u_int16_t *)sts);
+ if (setenv("SESSIONID", sessionid, 1) != 0)
+ syslog(LOG_WARNING, "setenv: cannot set SESSIONID=%s: %m",
+ sessionid);
+ /* Use this in preference to our interface index */
+ slot = strtoul(sessionid, &end, 16);
+ if (end != sessionid && *end == '\0')
+ dev->slot = slot;
+ break;
+ default:
+ snprintf(unknown, sizeof unknown, "<%d>", (int)rep->header.cmd);
+ msg = unknown;
+ break;
+ }
+
+ if (asciilen)
+ log_Printf(LogPHASE, "Received NGM_PPPOE_%s (hook \"%.*s\")\n",
+ msg, asciilen, sts->hook);
+ else
+ log_Printf(LogPHASE, "Received NGM_PPPOE_%s\n", msg);
+
+ switch (rep->header.cmd) {
+ case NGM_PPPOE_SUCCESS:
+ dev->connected = CARRIER_OK;
+ break;
+ case NGM_PPPOE_FAIL:
+ case NGM_PPPOE_CLOSE:
+ dev->connected = CARRIER_LOST;
+ break;
+ }
+ }
+ free(r);
+}
+
+static int
+ether_AwaitCarrier(struct physical *p)
+{
+ struct etherdevice *dev = device2ether(p->handler);
+
+ if (dev->connected != CARRIER_OK && !dev->timeout--)
+ dev->connected = CARRIER_LOST;
+ else if (dev->connected == CARRIER_PENDING)
+ ether_MessageIn(dev);
+
+ return dev->connected;
+}
+
+static const struct device baseetherdevice = {
+ ETHER_DEVICE,
+ "ether",
+ 1492,
+ { CD_REQUIRED, DEF_ETHERCDDELAY },
+ ether_AwaitCarrier,
+ ether_RemoveFromSet,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ ether_Free,
+ ether_Read,
+ ether_Write,
+ ether_device2iov,
+ NULL,
+ ether_OpenInfo,
+ ether_Slot
+};
+
+struct device *
+ether_iov2device(int type, struct physical *p, struct iovec *iov, int *niov,
+ int maxiov __unused, int *auxfd, int *nauxfd)
+{
+ if (type == ETHER_DEVICE) {
+ struct etherdevice *dev = (struct etherdevice *)iov[(*niov)++].iov_base;
+
+ dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */
+ if (dev == NULL) {
+ log_Printf(LogALERT, "Failed to allocate memory: %d\n",
+ (int)(sizeof *dev));
+ AbortProgram(EX_OSERR);
+ }
+
+ if (*nauxfd) {
+ dev->cs = *auxfd;
+ (*nauxfd)--;
+ } else
+ dev->cs = -1;
+
+ /* Refresh function pointers etc */
+ memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev);
+
+ physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF);
+ return &dev->dev;
+ }
+
+ return NULL;
+}
+
+static int
+ether_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n)
+{
+ struct physical *p = descriptor2physical(d);
+ struct etherdevice *dev = device2ether(p->handler);
+ int result;
+
+ if (r && dev->cs >= 0) {
+ FD_SET(dev->cs, r);
+ log_Printf(LogTIMER, "%s(ctrl): fdset(r) %d\n", p->link.name, dev->cs);
+ result = 1;
+ } else
+ result = 0;
+
+ result += physical_doUpdateSet(d, r, w, e, n, 0);
+
+ return result;
+}
+
+static int
+ether_IsSet(struct fdescriptor *d, const fd_set *fdset)
+{
+ struct physical *p = descriptor2physical(d);
+ struct etherdevice *dev = device2ether(p->handler);
+ int result;
+
+ result = dev->cs >= 0 && FD_ISSET(dev->cs, fdset);
+ result += physical_IsSet(d, fdset);
+
+ return result;
+}
+
+static void
+ether_DescriptorRead(struct fdescriptor *d, struct bundle *bundle,
+ const fd_set *fdset)
+{
+ struct physical *p = descriptor2physical(d);
+ struct etherdevice *dev = device2ether(p->handler);
+
+ if (dev->cs >= 0 && FD_ISSET(dev->cs, fdset)) {
+ ether_MessageIn(dev);
+ if (dev->connected == CARRIER_LOST) {
+ log_Printf(LogPHASE, "%s: Device disconnected\n", p->link.name);
+ datalink_Down(p->dl, CLOSE_NORMAL);
+ return;
+ }
+ }
+
+ if (physical_IsSet(d, fdset))
+ physical_DescriptorRead(d, bundle, fdset);
+}
+
+static struct device *
+ether_Abandon(struct etherdevice *dev, struct physical *p)
+{
+ /* Abandon our node construction */
+ close(dev->cs);
+ close(p->fd);
+ p->fd = -2; /* Nobody else need try.. */
+ free(dev);
+
+ return NULL;
+}
+
+struct device *
+ether_Create(struct physical *p)
+{
+ u_char rbuf[2048];
+ struct etherdevice *dev;
+ struct ng_mesg *resp;
+ const struct hooklist *hlist;
+ const struct nodeinfo *ninfo;
+ char *path, *sessionid;
+ const char *mode;
+ size_t ifacelen;
+ unsigned f;
+
+ dev = NULL;
+ path = NULL;
+ ifacelen = 0;
+ if (p->fd < 0 && !strncasecmp(p->name.full, NG_PPPOE_NODE_TYPE,
+ PPPOE_NODE_TYPE_LEN) &&
+ p->name.full[PPPOE_NODE_TYPE_LEN] == ':') {
+ const struct linkinfo *nlink;
+ struct ngpppoe_init_data *data;
+ struct ngm_mkpeer mkp;
+ struct ngm_connect ngc;
+ const char *iface, *provider;
+ char etherid[12];
+ int providerlen;
+ char connectpath[sizeof dev->hook + 2]; /* .:<hook> */
+
+ p->fd--; /* We own the device - change fd */
+
+ loadmodules(LOAD_VERBOSLY, "netgraph", "ng_ether", "ng_pppoe", "ng_socket",
+ NULL);
+
+ if ((dev = malloc(sizeof *dev)) == NULL)
+ return NULL;
+
+ iface = p->name.full + PPPOE_NODE_TYPE_LEN + 1;
+
+ provider = strchr(iface, ':');
+ if (provider) {
+ ifacelen = provider - iface;
+ provider++;
+ providerlen = strlen(provider);
+ } else {
+ ifacelen = strlen(iface);
+ provider = "";
+ providerlen = 0;
+ }
+
+ /*
+ * We're going to do this (where tunN is our tunnel device):
+ *
+ * .---------.
+ * | ether |
+ * | <iface> | dev->cs
+ * `---------' |
+ * (orphan) p->fd |
+ * | | |
+ * | | |
+ * (ethernet) | |
+ * .---------. .-----------.
+ * | pppoe | | socket |
+ * | <iface> |(tunN)<---->(tunN)| <unnamed> |
+ * `--------- `-----------'
+ * (tunX)
+ * ^
+ * |
+ * `--->(tunX)
+ */
+
+ /* Create a socket node */
+ if (ID0NgMkSockNode(NULL, &dev->cs, &p->fd) == -1) {
+ log_Printf(LogWARN, "Cannot create netgraph socket node: %s\n",
+ strerror(errno));
+ free(dev);
+ p->fd = -2;
+ return NULL;
+ }
+
+ /*
+ * Ask for a list of hooks attached to the "ether" node. This node should
+ * magically exist as a way of hooking stuff onto an ethernet device
+ */
+ path = (char *)alloca(ifacelen + 2);
+ sprintf(path, "%.*s:", (int)ifacelen, iface);
+ if (NgSendMsg(dev->cs, path, NGM_GENERIC_COOKIE, NGM_LISTHOOKS,
+ NULL, 0) < 0) {
+ log_Printf(LogWARN, "%s Cannot send a netgraph message: %s\n",
+ path, strerror(errno));
+ return ether_Abandon(dev, p);
+ }
+
+ /* Get our list back */
+ resp = (struct ng_mesg *)rbuf;
+ if (NgRecvMsg(dev->cs, resp, sizeof rbuf, NULL) <= 0) {
+ log_Printf(LogWARN, "Cannot get netgraph response: %s\n",
+ strerror(errno));
+ return ether_Abandon(dev, p);
+ }
+
+ hlist = (const struct hooklist *)resp->data;
+ ninfo = &hlist->nodeinfo;
+
+ /* Make sure we've got the right type of node */
+ if (strncmp(ninfo->type, NG_ETHER_NODE_TYPE,
+ sizeof NG_ETHER_NODE_TYPE - 1)) {
+ log_Printf(LogWARN, "%s Unexpected node type ``%s'' (wanted ``"
+ NG_ETHER_NODE_TYPE "'')\n", path, ninfo->type);
+ return ether_Abandon(dev, p);
+ }
+
+ log_Printf(LogDEBUG, "List of netgraph node ``%s'' (id %x) hooks:\n",
+ path, ninfo->id);
+
+ /* look for a hook already attached. */
+ for (f = 0; f < ninfo->hooks; f++) {
+ nlink = &hlist->link[f];
+
+ log_Printf(LogDEBUG, " Found %s -> %s\n", nlink->ourhook,
+ nlink->peerhook);
+
+ if (!strcmp(nlink->ourhook, NG_ETHER_HOOK_ORPHAN) ||
+ !strcmp(nlink->ourhook, NG_ETHER_HOOK_DIVERT)) {
+ /*
+ * Something is using the data coming out of this ``ether'' node.
+ * If it's a PPPoE node, we use that node, otherwise we complain that
+ * someone else is using the node.
+ */
+ if (!strcmp(nlink->nodeinfo.type, NG_PPPOE_NODE_TYPE))
+ /* Use this PPPoE node ! */
+ snprintf(ngc.path, sizeof ngc.path, "[%x]:", nlink->nodeinfo.id);
+ else {
+ log_Printf(LogWARN, "%s Node type ``%s'' is currently active\n",
+ path, nlink->nodeinfo.type);
+ return ether_Abandon(dev, p);
+ }
+ break;
+ }
+ }
+
+ if (f == ninfo->hooks) {
+ /*
+ * Create a new ``PPPoE'' node connected to the ``ether'' node using
+ * the ``orphan'' and ``ethernet'' hooks
+ */
+ snprintf(mkp.type, sizeof mkp.type, "%s", NG_PPPOE_NODE_TYPE);
+ snprintf(mkp.ourhook, sizeof mkp.ourhook, "%s", NG_ETHER_HOOK_ORPHAN);
+ snprintf(mkp.peerhook, sizeof mkp.peerhook, "%s", NG_PPPOE_HOOK_ETHERNET);
+ snprintf(etherid, sizeof etherid, "[%x]:", ninfo->id);
+
+ log_Printf(LogDEBUG, "Creating PPPoE netgraph node %s%s -> %s\n",
+ etherid, mkp.ourhook, mkp.peerhook);
+
+ if (NgSendMsg(dev->cs, etherid, NGM_GENERIC_COOKIE,
+ NGM_MKPEER, &mkp, sizeof mkp) < 0) {
+ log_Printf(LogWARN, "%s Cannot create PPPoE netgraph node: %s\n",
+ etherid, strerror(errno));
+ return ether_Abandon(dev, p);
+ }
+
+ snprintf(ngc.path, sizeof ngc.path, "%s%s", path, NG_ETHER_HOOK_ORPHAN);
+ }
+
+ snprintf(dev->hook, sizeof dev->hook, "%s%d",
+ TUN_NAME, p->dl->bundle->unit);
+
+ /*
+ * Connect the PPPoE node to our socket node.
+ * ngc.path has already been set up
+ */
+ snprintf(ngc.ourhook, sizeof ngc.ourhook, "%s", dev->hook);
+ memcpy(ngc.peerhook, ngc.ourhook, sizeof ngc.peerhook);
+
+ log_Printf(LogDEBUG, "Connecting netgraph socket .:%s -> %s:%s\n",
+ ngc.ourhook, ngc.path, ngc.peerhook);
+ if (NgSendMsg(dev->cs, ".:", NGM_GENERIC_COOKIE,
+ NGM_CONNECT, &ngc, sizeof ngc) < 0) {
+ log_Printf(LogWARN, "Cannot connect PPPoE and socket netgraph "
+ "nodes: %s\n", strerror(errno));
+ return ether_Abandon(dev, p);
+ }
+
+ /* Bring the Ethernet interface up */
+ path[ifacelen] = '\0'; /* Remove the trailing ':' */
+ if (!iface_SetFlags(path, IFF_UP))
+ log_Printf(LogWARN, "%s: Failed to set the IFF_UP flag on %s\n",
+ p->link.name, path);
+
+ snprintf(connectpath, sizeof connectpath, ".:%s", dev->hook);
+
+ /* Configure node to 3Com mode if needed */
+ if (p->cfg.pppoe_configured) {
+ mode = p->cfg.nonstandard_pppoe ? NG_PPPOE_NONSTANDARD : NG_PPPOE_STANDARD;
+ if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE,
+ NGM_PPPOE_SETMODE, mode, strlen(mode) + 1) == -1) {
+ log_Printf(LogWARN, "``%s'': Cannot configure netgraph node: %s\n",
+ connectpath, strerror(errno));
+ return ether_Abandon(dev, p);
+ }
+ }
+
+ /* And finally, request a connection to the given provider */
+
+ data = (struct ngpppoe_init_data *)alloca(sizeof *data + providerlen);
+ snprintf(data->hook, sizeof data->hook, "%s", dev->hook);
+ memcpy(data->data, provider, providerlen);
+ data->data_len = providerlen;
+
+ log_Printf(LogDEBUG, "Sending PPPOE_CONNECT to %s\n", connectpath);
+ if (NgSendMsg(dev->cs, connectpath, NGM_PPPOE_COOKIE,
+ NGM_PPPOE_CONNECT, data, sizeof *data + providerlen) == -1) {
+ log_Printf(LogWARN, "``%s'': Cannot start netgraph node: %s\n",
+ connectpath, strerror(errno));
+ return ether_Abandon(dev, p);
+ }
+
+ /* Hook things up so that we monitor dev->cs */
+ p->desc.UpdateSet = ether_UpdateSet;
+ p->desc.IsSet = ether_IsSet;
+ p->desc.Read = ether_DescriptorRead;
+
+ memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev);
+ switch (p->cfg.cd.necessity) {
+ case CD_VARIABLE:
+ dev->dev.cd.delay = p->cfg.cd.delay;
+ break;
+ case CD_REQUIRED:
+ dev->dev.cd = p->cfg.cd;
+ break;
+ case CD_NOTREQUIRED:
+ log_Printf(LogWARN, "%s: Carrier must be set, using ``set cd %d!''\n",
+ p->link.name, dev->dev.cd.delay);
+ case CD_DEFAULT:
+ break;
+ }
+
+ dev->timeout = dev->dev.cd.delay;
+ dev->connected = CARRIER_PENDING;
+ /* This will be overridden by our session id - if provided by netgraph */
+ dev->slot = GetIfIndex(path);
+ } else {
+ /* See if we're a netgraph socket */
+ struct stat st;
+
+ if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) {
+ struct sockaddr_storage ssock;
+ struct sockaddr *sock = (struct sockaddr *)&ssock;
+ int sz;
+
+ sz = sizeof ssock;
+ if (getsockname(p->fd, sock, &sz) == -1) {
+ log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name);
+ close(p->fd);
+ p->fd = -1;
+ return NULL;
+ }
+
+ if (sock->sa_family == AF_NETGRAPH) {
+ /*
+ * It's a netgraph node... We can't determine hook names etc, so we
+ * stay pretty impartial....
+ */
+ log_Printf(LogPHASE, "%s: Link is a netgraph node\n", p->link.name);
+
+ if ((dev = malloc(sizeof *dev)) == NULL) {
+ log_Printf(LogWARN, "%s: Cannot allocate an ether device: %s\n",
+ p->link.name, strerror(errno));
+ return NULL;
+ }
+
+ memcpy(&dev->dev, &baseetherdevice, sizeof dev->dev);
+ dev->cs = -1;
+ dev->timeout = 0;
+ dev->connected = CARRIER_OK;
+ *dev->hook = '\0';
+
+ /*
+ * If we're being envoked from pppoed(8), we may have a SESSIONID
+ * set in the environment. If so, use it as the slot
+ */
+ if ((sessionid = getenv("SESSIONID")) != NULL) {
+ char *end;
+ u_long slot;
+
+ slot = strtoul(sessionid, &end, 16);
+ dev->slot = end != sessionid && *end == '\0' ? slot : 0;
+ } else
+ dev->slot = 0;
+ }
+ }
+ }
+
+ if (dev) {
+ physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNCNOACF);
+ return &dev->dev;
+ }
+
+ return NULL;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-02 21:19:01 +0000