Add SunATM support, based on code from Yen Yen Lim at North Dakota State

[libpcap] / pcap-dlpi.c

diff --git a/pcap-dlpi.c b/pcap-dlpi.c
index d945ea4d9133e2fa708eacaa53738d844448b46f..854aa2b8a09dc08c7506c1aeed6e7b54fea835b9 100644 (file)
--- a/pcap-dlpi.c
+++ b/pcap-dlpi.c
@@ -23,7 +23,7 @@
  */
 
 /*
- * Packet capture routine for dlpi under SunOS 5
+ * Packet capture routine for DLPI under SunOS 5, HP-UX 9/10/11, and AIX.
  *
  * Notes:
  *
@@ -33,12 +33,12 @@
  *      length results in data being left of the front of the packet.
  *
  *    - It might be desirable to use pfmod(7) to filter packets in the
- *      kernel.
+ *      kernel when possible.
  */
 
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/libpcap/pcap-dlpi.c,v 1.78 2002-06-11 17:04:46 itojun Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/libpcap/pcap-dlpi.c,v 1.79 2002-07-11 09:06:37 guy Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -247,12 +247,31 @@ pcap_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
        return (n);
 }
 
+#ifndef DL_IPATM
+#define DL_IPATM       0x12    /* ATM Classical IP interface */
+#endif
+
+#ifdef HAVE_SOLARIS
+/*
+ * For SunATM.
+ */
+#ifndef A_GET_UNITS
+#define A_GET_UNITS    (('A'<<8)|118)
+#endif /* A_GET_UNITS */
+#ifndef A_PROMISCON_REQ
+#define A_PROMISCON_REQ        (('A'<<8)|121)
+#endif /* A_PROMISCON_REQ */
+#endif /* HAVE_SOLARIS */
+
 pcap_t *
 pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
 {
        register char *cp;
        register pcap_t *p;
        int ppa;
+#ifdef HAVE_SOLARIS
+       int isatm = 0;
+#endif
        register dl_info_ack_t *infop;
 #ifdef HAVE_SYS_BUFMOD_H
        bpf_u_int32 ss, flag;
@@ -376,6 +395,10 @@ pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
            dlinfoack(p->fd, (char *)buf, ebuf) < 0)
                goto bad;
        infop = &((union DL_primitives *)buf)->info_ack;
+#ifdef HAVE_SOLARIS
+       if (infop->dl_mac_type == DL_IPATM)
+               isatm = 1;
+#endif
        if (infop->dl_provider_style == DL_STYLE2 &&
            (dlattachreq(p->fd, ppa, ebuf) < 0 ||
            dlokack(p->fd, "attach", (char *)buf, ebuf) < 0))
@@ -411,6 +434,21 @@ pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
                goto bad;
 #endif
 
+#ifdef HAVE_SOLARIS
+       if (isatm) {
+               /*
+               ** Have to turn on some special ATM promiscuous mode
+               ** for SunATM.
+               ** Do *NOT* turn regular promiscuous mode on; it doesn't
+               ** help, and may break things.
+               */
+               if (strioctl(p->fd, A_PROMISCON_REQ, 0, NULL) < 0) {
+                       snprintf(ebuf, PCAP_ERRBUF_SIZE, "A_PROMISCON_REQ: %s",
+                           pcap_strerror(errno));
+                       goto bad;
+               }
+       } else
+#endif
        if (promisc) {
                /*
                ** Enable promiscuous
@@ -433,12 +471,16 @@ pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
        }
        /*
        ** Try to enable sap (when not in promiscuous mode when using
-       ** using HP-UX and never under SINIX)
+       ** using HP-UX, when not doing SunATM on Solaris, and never
+       ** under SINIX)
        */
 #ifndef sinix
        if (
 #ifdef __hpux
            !promisc &&
+#endif
+#ifdef HAVE_SOLARIS
+           !isatm &&
 #endif
            (dlpromisconreq(p->fd, DL_PROMISC_SAP, ebuf) < 0 ||
            dlokack(p->fd, "promisc_sap", (char *)buf, ebuf) < 0)) {
@@ -487,6 +529,13 @@ pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
                p->offset = 2;
                break;
 
+#ifdef HAVE_SOLARIS
+       case DL_IPATM:
+               p->linktype = DLT_SUNATM;
+               p->offset = 0;  /* works for LANE and LLC encapsulation */
+               break;
+#endif
+
        default:
                snprintf(ebuf, PCAP_ERRBUF_SIZE, "unknown mac type %lu",
                    (unsigned long)infop->dl_mac_type);
@@ -495,7 +544,8 @@ pcap_open_live(char *device, int snaplen, int promisc, int to_ms, char *ebuf)
 
 #ifdef DLIOCRAW
        /*
-       ** This is a non standard SunOS hack to get the ethernet header.
+       ** This is a non standard SunOS hack to get the full raw link-layer
+       ** header.
        */
        if (strioctl(p->fd, DLIOCRAW, 0, NULL) < 0) {
                snprintf(ebuf, PCAP_ERRBUF_SIZE, "DLIOCRAW: %s",
@@ -630,6 +680,49 @@ split_dname(char *device, int *unitp, char *ebuf)
        return (cp);
 }
 
+int
+pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf)
+{
+#ifdef HAVE_SOLARIS
+       int fd;
+       union {
+               u_int nunits;
+               char pad[516];  /* XXX - must be at least 513; is 516
+                                  in "atmgetunits" */
+       } buf;
+       char baname[2+1+1];
+       u_int i;
+
+       /*
+        * We may have to do special magic to get ATM devices.
+        */
+       if ((fd = open("/dev/ba", O_RDWR)) < 0) {
+               /*
+                * We couldn't open the "ba" device.
+                * For now, just give up; perhaps we should
+                * return an error if the problem is neither
+                * a "that device doesn't exist" error (ENOENT,
+                * ENXIO, etc.) or a "you're not allowed to do
+                * that" error (EPERM, EACCES).
+                */
+               return (0);
+       }
+
+       if (strioctl(fd, A_GET_UNITS, sizeof(buf), (char *)&buf) < 0) {
+               snprintf(errbuf, PCAP_ERRBUF_SIZE, "A_GET_UNITS: %s",
+                   pcap_strerror(errno));
+               return (-1);
+       }
+       for (i = 0; i < buf.nunits; i++) {
+               snprintf(baname, sizeof baname, "ba%u", i);
+               if (pcap_add_if(alldevsp, baname, 0, NULL, errbuf) < 0)
+                       return (-1);
+       }
+#endif
+
+       return (0);
+}
+
 int
 pcap_setfilter(pcap_t *p, struct bpf_program *fp)
 {