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Diffstat (limited to 'src/libnet_link_dlpi.c')
-rw-r--r--src/libnet_link_dlpi.c769
1 files changed, 769 insertions, 0 deletions
diff --git a/src/libnet_link_dlpi.c b/src/libnet_link_dlpi.c
new file mode 100644
index 0000000..bb65901
--- /dev/null
+++ b/src/libnet_link_dlpi.c
@@ -0,0 +1,769 @@
+/*
+ * $Id: libnet_link_dlpi.c,v 1.8 2004/01/28 19:45:00 mike Exp $
+ *
+ * libnet
+ * libnet_dlpi.c - dlpi routines
+ *
+ * Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
+ * All rights reserved.
+ *
+ * Copyright (c) 1993, 1994, 1995, 1996, 1997
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that: (1) source code distributions
+ * retain the above copyright notice and this paragraph in its entirety, (2)
+ * distributions including binary code include the above copyright notice and
+ * this paragraph in its entirety in the documentation or other materials
+ * provided with the distribution, and (3) all advertising materials mentioning
+ * features or use of this software display the following acknowledgement:
+ * ``This product includes software developed by the University of California,
+ * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+ * the University nor the names of its contributors may be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * This code contributed by Atanu Ghosh (atanu@cs.ucl.ac.uk),
+ * University College London.
+ */
+
+
+#if (HAVE_CONFIG_H)
+#include "../include/config.h"
+#endif
+#include <sys/types.h>
+#include <sys/time.h>
+#ifdef HAVE_SYS_BUFMOD_H
+#include <sys/bufmod.h>
+#endif
+#include <sys/dlpi.h>
+#ifdef HAVE_HPUX9
+#include <sys/socket.h>
+#endif
+#ifdef DL_HP_PPA_ACK_OBS
+#include <sys/stat.h>
+#endif
+#include <sys/stream.h>
+#if defined(HAVE_SOLARIS) && defined(HAVE_SYS_BUFMOD_H)
+#include <sys/systeminfo.h>
+#endif
+
+#ifdef HAVE_SYS_DLPI_EXT_H
+#include <sys/dlpi_ext.h>
+#endif
+
+#ifdef HAVE_HPUX9
+#include <net/if.h>
+#endif
+
+#include <ctype.h>
+#ifdef HAVE_HPUX9
+#include <nlist.h>
+#include <dlpi_ext.h>
+#endif
+#include <errno.h>
+#include <fcntl.h>
+#include <memory.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stropts.h>
+#include <unistd.h>
+
+#include "../include/libnet.h"
+#include "../include/bpf.h"
+
+#include "../include/gnuc.h"
+#ifdef HAVE_OS_PROTO_H
+#include "../include/os-proto.h"
+#endif
+
+#ifndef DLPI_DEV_PREFIX
+#define DLPI_DEV_PREFIX "/dev"
+#endif
+
+#define MAXDLBUF 8192
+
+/* Forwards */
+static int dlattachreq(int, bpf_u_int32, int8_t *);
+static int dlbindack(int, int8_t *, int8_t *);
+static int dlbindreq(int, bpf_u_int32, int8_t *);
+static int dlinfoack(int, int8_t *, int8_t *);
+static int dlinforeq(int, int8_t *);
+static int dlokack(int, const int8_t *, int8_t *, int8_t *);
+static int recv_ack(int, int, const int8_t *, int8_t *, int8_t *);
+static int send_request(int, int8_t *, int, int8_t *, int8_t *, int);
+#ifdef HAVE_SYS_BUFMOD_H
+static int strioctl(int, int, int, int8_t *);
+#endif
+#ifdef HAVE_HPUX9
+static int dlpi_kread(int, off_t, void *, uint, int8_t *);
+#endif
+#ifdef HAVE_DEV_DLPI
+static int get_dlpi_ppa(int, const int8_t *, int, int8_t *);
+#endif
+
+/* XXX Needed by HP-UX (at least) */
+static bpf_u_int32 ctlbuf[MAXDLBUF];
+
+
+int
+libnet_open_link(libnet_t *l)
+{
+ register int8_t *cp;
+ int8_t *eos;
+ register int ppa;
+ register dl_info_ack_t *infop;
+ bpf_u_int32 buf[MAXDLBUF];
+ int8_t dname[100];
+#ifndef HAVE_DEV_DLPI
+ int8_t dname2[100];
+#endif
+
+ if (l == NULL)
+ {
+ return (-1);
+ }
+
+ /*
+ * Determine device and ppa
+ */
+ cp = strpbrk(l->device, "0123456789");
+ if (cp == NULL)
+ {
+ snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
+ "%s(): %s is missing unit number\n", __func__, l->device);
+ goto bad;
+ }
+ ppa = strtol(cp, &eos, 10);
+ if (*eos != '\0')
+ {
+ snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
+ "%s(): %s bad unit number\n", __func__, l->device);
+ goto bad;
+ }
+
+ if (*(l->device) == '/')
+ {
+ memset(&dname, 0, sizeof(dname));
+ strncpy(dname, l->device, sizeof(dname) - 1);
+ dname[sizeof(dname) - 1] = '\0';
+ }
+ else
+ {
+ sprintf(dname, "%s/%s", DLPI_DEV_PREFIX, l->device);
+ }
+#ifdef HAVE_DEV_DLPI
+ /*
+ * Map network device to /dev/dlpi unit
+ */
+ cp = "/dev/dlpi";
+
+ l->fd = open(cp, O_RDWR);
+ if (l->fd == -1)
+ {
+ snprintf(l->err_buf, LIBNET_ERRBUF_SIZE, "%s(): open(): %s: %s\n",
+ __func__, cp, strerror(errno));
+ goto bad;
+ }
+
+ /*
+ * Map network interface to /dev/dlpi unit
+ */
+ ppa = get_dlpi_ppa(l->fd, dname, ppa, l->err_buf);
+ if (ppa < 0)
+ {
+ goto bad;
+ }
+#else
+ /*
+ * Try device without unit number
+ */
+ strcpy(dname2, dname);
+ cp = strchr(dname, *cp);
+ *cp = '\0';
+
+ l->fd = open(dname, O_RDWR);
+ if (l->fd == -1)
+ {
+ if (errno != ENOENT)
+ {
+ snprintf(l->err_buf, LIBNET_ERRBUF_SIZE, "%s(): open(): %s: %s\n",
+ __func__, dname, strerror(errno));
+ goto bad;
+ }
+
+ /*
+ * Try again with unit number
+ */
+ l->fd = open(dname2, O_RDWR);
+ if (l->fd == -1)
+ {
+ snprintf(l->err_buf, LIBNET_ERRBUF_SIZE, "%s(): open(): %s: %s\n",
+ __func__, dname2, strerror(errno));
+ goto bad;
+ }
+
+ cp = dname2;
+ while (*cp && !isdigit((int)*cp))
+ {
+ cp++;
+ }
+ if (*cp)
+ {
+ ppa = atoi(cp);
+ }
+ else
+ /*
+ * XXX Assume unit zero
+ */
+ ppa = 0;
+ }
+#endif
+ /*
+ * Attach if "style 2" provider
+ */
+ if (dlinforeq(l->fd, l->err_buf) < 0 ||
+ dlinfoack(l->fd, (int8_t *)buf, l->err_buf) < 0)
+ {
+ goto bad;
+ }
+ infop = &((union DL_primitives *)buf)->info_ack;
+ if (infop->dl_provider_style == DL_STYLE2 &&
+ (dlattachreq(l->fd, ppa, l->err_buf)
+ < 0 || dlokack(l->fd, "attach", (int8_t *)buf, l->err_buf) < 0))
+ {
+ goto bad;
+ }
+
+ /*
+ * Bind HP-UX 9 and HP-UX 10.20
+ */
+#if defined(HAVE_HPUX9) || defined(HAVE_HPUX10_20) || defined(HAVE_HPUX11) || defined(HAVE_SOLARIS)
+ if (dlbindreq(l->fd, 0, l->err_buf) < 0 ||
+ dlbindack(l->fd, (int8_t *)buf, l->err_buf) < 0)
+ {
+ goto bad;
+ }
+#endif
+
+ /*
+ * Determine link type
+ */
+ if (dlinforeq(l->fd, l->err_buf) < 0 ||
+ dlinfoack(l->fd, (int8_t *)buf, l->err_buf) < 0)
+ {
+ goto bad;
+ }
+
+ infop = &((union DL_primitives *)buf)->info_ack;
+ switch (infop->dl_mac_type)
+ {
+ case DL_CSMACD:
+ case DL_ETHER:
+ l->link_type = DLT_EN10MB;
+ l->link_offset = 0xe;
+ break;
+ case DL_FDDI:
+ l->link_type = DLT_FDDI;
+ l->link_offset = 0x15;
+ break;
+ case DL_TPR:
+ l->link_type = DLT_PRONET;
+ l->link_offset = 0x16;
+ break;
+ default:
+ sprintf(l->err_buf, "%s(): unknown mac type 0x%lu\n", __func__,
+ (uint32_t) infop->dl_mac_type);
+ goto bad;
+ }
+
+#ifdef DLIOCRAW
+ /*
+ * This is a non standard SunOS hack to get the ethernet header.
+ */
+ if (strioctl(l->fd, DLIOCRAW, 0, NULL) < 0)
+ {
+ sprintf(l->err_buf, "%s(): DLIOCRAW: %s\n", __func__, strerror(errno));
+ goto bad;
+ }
+#endif
+
+ return (1);
+bad:
+ if (l->fd > 0)
+ {
+ close(l->fd); /* this can fail ok */
+ }
+ return (-1);
+}
+
+
+static int
+send_request(int fd, int8_t *ptr, int len, int8_t *what, int8_t *ebuf,
+int flags)
+{
+ struct strbuf ctl;
+
+ ctl.maxlen = 0;
+ ctl.len = len;
+ ctl.buf = ptr;
+
+ if (putmsg(fd, &ctl, (struct strbuf *) NULL, flags) < 0)
+ {
+ sprintf(ebuf, "%s(): putmsg \"%s\": %s\n", __func__, what,
+ strerror(errno));
+ return (-1);
+ }
+ return (0);
+}
+
+static int
+recv_ack(int fd, int size, const int8_t *what, int8_t *bufp, int8_t *ebuf)
+{
+ union DL_primitives *dlp;
+ struct strbuf ctl;
+ int flags;
+
+ ctl.maxlen = MAXDLBUF;
+ ctl.len = 0;
+ ctl.buf = bufp;
+
+ flags = 0;
+ if (getmsg(fd, &ctl, (struct strbuf*)NULL, &flags) < 0)
+ {
+ sprintf(ebuf, "%s(): %s getmsg: %s\n", __func__, what, strerror(errno));
+ return (-1);
+ }
+
+ dlp = (union DL_primitives *)ctl.buf;
+ switch (dlp->dl_primitive)
+ {
+ case DL_INFO_ACK:
+ case DL_PHYS_ADDR_ACK:
+ case DL_BIND_ACK:
+ case DL_OK_ACK:
+#ifdef DL_HP_PPA_ACK
+ case DL_HP_PPA_ACK:
+#endif
+ /*
+ * These are OK
+ */
+ break;
+
+ case DL_ERROR_ACK:
+ switch (dlp->error_ack.dl_errno)
+ {
+ case DL_BADPPA:
+ sprintf(ebuf, "recv_ack: %s bad ppa (device unit)", what);
+ break;
+ case DL_SYSERR:
+ sprintf(ebuf, "recv_ack: %s: %s",
+ what, strerror(dlp->error_ack.dl_unix_errno));
+ break;
+ case DL_UNSUPPORTED:
+ sprintf(ebuf,
+ "recv_ack: %s: Service not supplied by provider", what);
+ break;
+ default:
+ sprintf(ebuf, "recv_ack: %s error 0x%x", what,
+ (bpf_u_int32)dlp->error_ack.dl_errno);
+ break;
+ }
+ return (-1);
+
+ default:
+ sprintf(ebuf, "recv_ack: %s unexpected primitive ack 0x%x ",
+ what, (bpf_u_int32)dlp->dl_primitive);
+ return (-1);
+ }
+
+ if (ctl.len < size)
+ {
+ sprintf(ebuf, "recv_ack: %s ack too small (%d < %d)",
+ what, ctl.len, size);
+ return (-1);
+ }
+ return (ctl.len);
+}
+
+static int
+dlattachreq(int fd, bpf_u_int32 ppa, int8_t *ebuf)
+{
+ dl_attach_req_t req;
+
+ req.dl_primitive = DL_ATTACH_REQ;
+ req.dl_ppa = ppa;
+
+ return (send_request(fd, (int8_t *)&req, sizeof(req), "attach", ebuf, 0));
+}
+
+static int
+dlbindreq(int fd, bpf_u_int32 sap, int8_t *ebuf)
+{
+
+ dl_bind_req_t req;
+
+ memset((int8_t *)&req, 0, sizeof(req));
+ req.dl_primitive = DL_BIND_REQ;
+#ifdef DL_HP_RAWDLS
+ req.dl_max_conind = 1; /* XXX magic number */
+ /*
+ * 22 is INSAP as per the HP-UX DLPI Programmer's Guide
+ */
+ req.dl_sap = 22;
+ req.dl_service_mode = DL_HP_RAWDLS;
+#else
+ req.dl_sap = sap;
+#ifdef DL_CLDLS
+ req.dl_service_mode = DL_CLDLS;
+#endif
+#endif
+ return (send_request(fd, (int8_t *)&req, sizeof(req), "bind", ebuf, 0));
+}
+
+static int
+dlbindack(int fd, int8_t *bufp, int8_t *ebuf)
+{
+ return (recv_ack(fd, DL_BIND_ACK_SIZE, "bind", bufp, ebuf));
+}
+
+static int
+dlokack(int fd, const int8_t *what, int8_t *bufp, int8_t *ebuf)
+{
+ return (recv_ack(fd, DL_OK_ACK_SIZE, what, bufp, ebuf));
+}
+
+static int
+dlinforeq(int fd, int8_t *ebuf)
+{
+ dl_info_req_t req;
+
+ req.dl_primitive = DL_INFO_REQ;
+
+ return (send_request(fd, (int8_t *)&req, sizeof(req), "info", ebuf,
+ RS_HIPRI));
+}
+
+static int
+dlinfoack(int fd, int8_t *bufp, int8_t *ebuf)
+{
+ return (recv_ack(fd, DL_INFO_ACK_SIZE, "info", bufp, ebuf));
+}
+
+
+#ifdef HAVE_SYS_BUFMOD_H
+static int
+strioctl(int fd, int cmd, int len, int8_t *dp)
+{
+ struct strioctl str;
+ int rc;
+
+ str.ic_cmd = cmd;
+ str.ic_timout = -1;
+ str.ic_len = len;
+ str.ic_dp = dp;
+
+ rc = ioctl(fd, I_STR, &str);
+ if (rc < 0)
+ {
+ return (rc);
+ }
+ else
+ {
+ return (str.ic_len);
+ }
+}
+#endif
+
+
+#if (defined(DL_HP_PPA_ACK_OBS) && !defined(HAVE_HPUX11))
+/*
+ * Under HP-UX 10, we can ask for the ppa
+ */
+static int
+get_dlpi_ppa(register int fd, register const int8_t *device, register int unit,
+register int8_t *ebuf)
+{
+ register dl_hp_ppa_ack_t *ap;
+ register dl_hp_ppa_info_t *ip;
+ register int i;
+ register uint32_t majdev;
+ dl_hp_ppa_req_t req;
+ struct stat statbuf;
+ bpf_u_int32 buf[MAXDLBUF];
+
+ if (stat(device, &statbuf) < 0)
+ {
+ sprintf(ebuf, "stat: %s: %s", device, strerror(errno));
+ return (-1);
+ }
+ majdev = major(statbuf.st_rdev);
+
+ memset((int8_t *)&req, 0, sizeof(req));
+ req.dl_primitive = DL_HP_PPA_REQ;
+
+ memset((int8_t *)buf, 0, sizeof(buf));
+ if (send_request(fd, (int8_t *)&req, sizeof(req), "hpppa", ebuf, 0) < 0 ||
+ recv_ack(fd, DL_HP_PPA_ACK_SIZE, "hpppa", (int8_t *)buf, ebuf) < 0)
+ {
+ return (-1);
+ }
+
+ ap = (dl_hp_ppa_ack_t *)buf;
+ ip = (dl_hp_ppa_info_t *)((uint8_t *)ap + ap->dl_offset);
+
+ for (i = 0; i < ap->dl_count; i++)
+ {
+ if (ip->dl_mjr_num == majdev && ip->dl_instance_num == unit)
+ break;
+
+ ip = (dl_hp_ppa_info_t *)((uint8_t *)ip + ip->dl_next_offset);
+ }
+
+ if (i == ap->dl_count)
+ {
+ sprintf(ebuf, "can't find PPA for %s", device);
+ return (-1);
+ }
+
+ if (ip->dl_hdw_state == HDW_DEAD)
+ {
+ sprintf(ebuf, "%s: hardware state: DOWN\n", device);
+ return (-1);
+ }
+ return ((int)ip->dl_ppa);
+}
+#endif
+
+#ifdef HAVE_HPUX9
+/*
+ * Under HP-UX 9, there is no good way to determine the ppa.
+ * So punt and read it from /dev/kmem.
+ */
+static struct nlist nl[] =
+{
+#define NL_IFNET 0
+ { "ifnet" },
+ { "" }
+};
+
+static int8_t path_vmunix[] = "/hp-ux";
+
+/*
+ * Determine ppa number that specifies ifname
+ */
+static int
+get_dlpi_ppa(register int fd, register const int8_t *ifname, register int unit,
+ register int8_t *ebuf)
+{
+ register const int8_t *cp;
+ register int kd;
+ void *addr;
+ struct ifnet ifnet;
+ int8_t if_name[sizeof(ifnet.if_name)], tifname[32];
+
+ cp = strrchr(ifname, '/');
+ if (cp != NULL)
+ {
+ ifname = cp + 1;
+ }
+ if (nlist(path_vmunix, &nl) < 0)
+ {
+ sprintf(ebuf, "nlist %s failed", path_vmunix);
+ return (-1);
+ }
+
+ if (nl[NL_IFNET].n_value == 0)
+ {
+ sprintf(ebuf, "could't find %s kernel symbol", nl[NL_IFNET].n_name);
+ return (-1);
+ }
+
+ kd = open("/dev/kmem", O_RDONLY);
+ if (kd < 0)
+ {
+ sprintf(ebuf, "kmem open: %s", strerror(errno));
+ return (-1);
+ }
+
+ if (dlpi_kread(kd, nl[NL_IFNET].n_value, &addr, sizeof(addr), ebuf) < 0)
+ {
+ close(kd);
+ return (-1);
+ }
+ for (; addr != NULL; addr = ifnet.if_next)
+ {
+ if (dlpi_kread(kd, (off_t)addr, &ifnet, sizeof(ifnet), ebuf) < 0 ||
+ dlpi_kread(kd, (off_t)ifnet.if_name,
+ if_name, sizeof(if_name), ebuf) < 0)
+ {
+ close(kd);
+ return (-1);
+ }
+ sprintf(tifname, "%.*s%d",
+ (int)sizeof(if_name), if_name, ifnet.if_unit);
+ if (strcmp(tifname, ifname) == 0)
+ {
+ return (ifnet.if_index);
+ }
+ }
+
+ sprintf(ebuf, "Can't find %s", ifname);
+ return (-1);
+}
+
+static int
+dlpi_kread(register int fd, register off_t addr, register void *buf,
+register uint len, register int8_t *ebuf)
+{
+ register int cc;
+
+ if (lseek(fd, addr, SEEK_SET) < 0)
+ {
+ sprintf(ebuf, "lseek: %s", strerror(errno));
+ return (-1);
+ }
+ cc = read(fd, buf, len);
+ if (cc < 0)
+ {
+ sprintf(ebuf, "read: %s", strerror(errno));
+ return (-1);
+ }
+ else if (cc != len)
+ {
+ sprintf(ebuf, "int16_t read (%d != %d)", cc, len);
+ return (-1);
+ }
+ return (cc);
+}
+#endif
+
+#define ETHERADDRL 6
+struct EnetHeaderInfo
+{
+ struct libnet_ether_addr DestEtherAddr;
+ uint16_t EtherFrameType;
+};
+
+
+int
+libnet_close_link(libnet_t *l)
+{
+ if (close(l->fd) == 0)
+ {
+ return (1);
+ }
+ else
+ {
+ return (-1);
+ }
+}
+
+#ifdef HAVE_HPUX11
+int
+libnet_write_link(libnet_t *l, const uint8_t *packet, uint32_t size)
+{
+ struct strbuf data, ctl;
+ dl_hp_rawdata_req_t *rdata;
+ int c;
+
+ if (l == NULL)
+ {
+ return (-1);
+ }
+
+ rdata = (dl_hp_rawdata_req_t *)ctlbuf;
+ rdata->dl_primitive = DL_HP_RAWDATA_REQ;
+
+ /* send it */
+ ctl.len = sizeof(dl_hp_rawdata_req_t);
+ ctl.maxlen = sizeof(dl_hp_rawdata_req_t);
+ ctl.buf = (int8_t *)rdata;
+
+ data.maxlen = size;
+ data.len = size;
+ data.buf = packet;
+
+ c = putmsg(l->fd, &ctl, &data, 0);
+ if (c == -1)
+ {
+ snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
+ "libnet_write_link(): %d bytes written (%s)\n", c,
+ strerror(errno));
+ return (-1);
+ }
+ else
+ {
+ return (size);
+ }
+}
+#else
+int
+libnet_write_link(libnet_t *l, const uint8_t *packet, uint32_t size)
+{
+ int c;
+ struct strbuf data;
+
+ if (l == NULL)
+ {
+ return (-1);
+ }
+
+ data.maxlen = size;
+ data.len = size;
+ data.buf = packet;
+
+ c = putmsg(l->fd, NULL, &data, 0);
+ if (c == -1)
+ {
+ snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
+ "libnet_write_link: %d bytes written (%s)\n", c,
+ strerror(errno));
+ return (-1);
+ }
+ else
+ {
+ return (size);
+ }
+}
+#endif
+
+struct libnet_ether_addr *
+libnet_get_hwaddr(libnet_t *l)
+{
+ /* This implementation is not-reentrant. */
+ static int8_t buf[2048];
+ union DL_primitives *dlp;
+ struct libnet_ether_addr *eap;
+
+ if (l == NULL)
+ {
+ return (NULL);
+ }
+
+ dlp = (union DL_primitives *)buf;
+
+ dlp->physaddr_req.dl_primitive = DL_PHYS_ADDR_REQ;
+ dlp->physaddr_req.dl_addr_type = DL_CURR_PHYS_ADDR;
+
+ if (send_request(l->fd, (int8_t *)dlp, DL_PHYS_ADDR_REQ_SIZE, "physaddr",
+ l->err_buf, 0) < 0)
+ {
+ return (NULL);
+ }
+ if (recv_ack(l->fd, DL_PHYS_ADDR_ACK_SIZE, "physaddr", (int8_t *)dlp,
+ l->err_buf) < 0)
+ {
+ return (NULL);
+ }
+
+ eap = (struct libnet_ether_addr *)
+ ((int8_t *) dlp + dlp->physaddr_ack.dl_addr_offset);
+ return (eap);
+}
+
+/* EOF */
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-25 22:59:04 +0000