MFV r333789: libpcap 1.9.0 (pre-release)

MFC after:	1 month
Sponsored by:	Mellanox Technologies

1 files changed, 64 insertions, 8 deletions

diff --git a/contrib/libpcap/pcap-libdlpi.c b/contrib/libpcap/pcap-libdlpi.c
index 625f1e0a31ed..a0d16693f6c2 100644
--- a/contrib/libpcap/pcap-libdlpi.c
+++ b/contrib/libpcap/pcap-libdlpi.c
@@ -25,7 +25,7 @@
  */
 
 #ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
 #endif
 
 #include <sys/types.h>
@@ -137,6 +137,17 @@ pcap_activate_libdlpi(pcap_t *p)
 		goto bad;
 	}
 
+	/*
+	 * Turn a negative snapshot value (invalid), a snapshot value of
+	 * 0 (unspecified), or a value bigger than the normal maximum
+	 * value, into the maximum allowed value.
+	 *
+	 * If some application really *needs* a bigger snapshot
+	 * length, we should just increase MAXIMUM_SNAPLEN.
+	 */
+	if (p->snapshot <= 0 || p->snapshot > MAXIMUM_SNAPLEN)
+		p->snapshot = MAXIMUM_SNAPLEN;
+
 	/* Enable promiscuous mode. */
 	if (p->opt.promisc) {
 		retv = dlpromiscon(p, DL_PROMISC_PHYS);
@@ -209,8 +220,8 @@ pcap_activate_libdlpi(pcap_t *p)
 	 */
 	if (ioctl(p->fd, I_FLUSH, FLUSHR) != 0) {
 		status = PCAP_ERROR;
-		pcap_snprintf(p->errbuf, PCAP_ERRBUF_SIZE, "FLUSHR: %s",
-		    pcap_strerror(errno));
+		pcap_fmt_errmsg_for_errno(p->errbuf, PCAP_ERRBUF_SIZE,
+		    errno, "FLUSHR");
 		goto bad;
 	}
 
@@ -276,13 +287,36 @@ is_dlpi_interface(const char *name _U_)
 	return (1);
 }
 
+static int
+get_if_flags(const char *name _U_, bpf_u_int32 *flags _U_, char *errbuf _U_)
+{
+	/*
+	 * Nothing we can do other than mark loopback devices as "the
+	 * connected/disconnected status doesn't apply".
+	 *
+	 * XXX - on Solaris, can we do what the dladm command does,
+	 * i.e. get a connected/disconnected indication from a kstat?
+	 * (Note that you can also get the link speed, and possibly
+	 * other information, from a kstat as well.)
+	 */
+	if (*flags & PCAP_IF_LOOPBACK) {
+		/*
+		 * Loopback devices aren't wireless, and "connected"/
+		 * "disconnected" doesn't apply to them.
+		 */
+		*flags |= PCAP_IF_CONNECTION_STATUS_NOT_APPLICABLE;
+		return (0);
+	}
+	return (0);
+}
+
 /*
  * In Solaris, the "standard" mechanism" i.e SIOCGLIFCONF will only find
  * network links that are plumbed and are up. dlpi_walk(3DLPI) will find
  * additional network links present in the system.
  */
 int
-pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf)
+pcap_platform_finddevs(pcap_if_list_t *devlistp, char *errbuf)
 {
 	int retv = 0;
 
@@ -293,23 +327,36 @@ pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf)
 	/*
 	 * Get the list of regular interfaces first.
 	 */
-	if (pcap_findalldevs_interfaces(alldevsp, errbuf, is_dlpi_interface) == -1)
+	if (pcap_findalldevs_interfaces(devlistp, errbuf,
+	    is_dlpi_interface, get_if_flags) == -1)
 		return (-1);	/* failure */
 
 	/* dlpi_walk() for loopback will be added here. */
 
+	/*
+	 * Find all DLPI devices in the current zone.
+	 *
+	 * XXX - will pcap_findalldevs_interfaces() find any devices
+	 * outside the current zone?  If not, the only reason to call
+	 * it would be to get the interface addresses.
+	 */
 	dlpi_walk(list_interfaces, &lw, 0);
 
 	if (lw.lw_err != 0) {
-		pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
-		    "dlpi_walk: %s", pcap_strerror(lw.lw_err));
+		pcap_fmt_errmsg_for_errno(errbuf, PCAP_ERRBUF_SIZE,
+		    lw.lw_err, "dlpi_walk");
 		retv = -1;
 		goto done;
 	}
 
 	/* Add linkname if it does not exist on the list. */
 	for (entry = lw.lw_list; entry != NULL; entry = entry->lnl_next) {
-		if (pcap_add_if(alldevsp, entry->linkname, 0, NULL, errbuf) < 0)
+		/*
+		 * If it isn't already in the list of devices, try to
+		 * add it.
+		 */
+		if (find_or_add_dev(devlistp, entry->linkname, 0, get_if_flags,
+		    NULL, errbuf) == NULL)
 			retv = -1;
 	}
 done:
@@ -437,3 +484,12 @@ pcap_create_interface(const char *device _U_, char *ebuf)
 	p->activate_op = pcap_activate_libdlpi;
 	return (p);
 }
+
+/*
+ * Libpcap version string.
+ */
+const char *
+pcap_lib_version(void)
+{
+	return (PCAP_VERSION_STRING);
+}