remove pfring support

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@3096 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 0 insertions, 613 deletions

diff --git a/openwrt/package/libpcap/patches/110-pf_ring.patch b/openwrt/package/libpcap/patches/110-pf_ring.patch
deleted file mode 100644
index 1d5124fac8..0000000000
--- a/openwrt/package/libpcap/patches/110-pf_ring.patch
+++ /dev/null
@@ -1,613 +0,0 @@
-diff -urN libpcap.old/pcap-int.h libpcap.dev/pcap-int.h
---- libpcap.old/pcap-int.h	2003-12-15 02:42:24.000000000 +0100
-+++ libpcap.dev/pcap-int.h	2005-10-22 23:20:12.220060500 +0200
-@@ -30,7 +30,7 @@
-  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-  * SUCH DAMAGE.
-  *
-- * @(#) $Header: /tcpdump/master/libpcap/pcap-int.h,v 1.55.2.4 2003/12/15 01:42:24 guy Exp $ (LBL)
-+ * @(#) $Header: /export/home/ntop/PF_RING/userland/libpcap-0.8.1-ring/pcap-int.h,v 1.2 2004/11/25 09:58:00 deri Exp $ (LBL)
-  */
- 
- #ifndef pcap_int_h
-@@ -46,6 +46,8 @@
- #include <packet32.h>
- #endif /* WIN32 */
- 
-+#define RING /* L.Deri */
-+
- /*
-  * Savefile
-  */
-@@ -93,6 +95,57 @@
- #endif
- };
- 
-+/* **************************** */
-+
-+#ifdef  RING
-+
-+#include <unistd.h>
-+#include <sys/mman.h>
-+#include <errno.h>
-+#include <sys/poll.h>
-+
-+#define PAGE_SIZE         4096
-+
-+#define HAVE_PCAP
-+#include <linux/ring.h>
-+#endif
-+
-+#ifdef RING
-+
-+#define E1000_RXD_STAT_DD       0x01    /* Descriptor Done */
-+
-+struct e1000_rx_desc {
-+  u_int64_t buffer_addr; /* Address of the descriptor's data buffer */
-+  u_int16_t length;     /* Length of data DMAed into data buffer */
-+  u_int16_t csum;       /* Packet checksum */
-+  u_int8_t status;      /* Descriptor status */
-+  u_int8_t errors;      /* Descriptor Errors */
-+  u_int16_t special;
-+};
-+
-+/* Transmit Descriptor */
-+struct e1000_tx_desc {
-+    u_int64_t buffer_addr;       /* Address of the descriptor's data buffer */
-+    union {
-+        u_int32_t data;
-+        struct {
-+            u_int16_t length;    /* Data buffer length */
-+            u_int8_t cso;        /* Checksum offset */
-+            u_int8_t cmd;        /* Descriptor control */
-+        } flags;
-+    } lower;
-+    union {
-+        u_int32_t data;
-+        struct {
-+            u_int8_t status;     /* Descriptor status */
-+            u_int8_t css;        /* Checksum start */
-+            u_int16_t special;
-+        } fields;
-+    } upper;
-+};
-+
-+#endif
-+
- struct pcap {
- #ifdef WIN32
- 	ADAPTER *adapter;
-@@ -121,6 +174,14 @@
- 	u_char *bp;
- 	int cc;
- 
-+#ifdef RING
-+        /* PF_RING */
-+	char *ring_buffer, *ring_slots;
-+	int  ring_fd;
-+	FlowSlotInfo *slots_info;
-+        u_int page_id, slot_id, pkts_per_page;
-+        u_int poll_sleep;
-+#endif
- 	/*
- 	 * Place holder for pcap_next().
- 	 */
-diff -urN libpcap.old/pcap-linux.c libpcap.dev/pcap-linux.c
---- libpcap.old/pcap-linux.c	2003-11-21 11:20:46.000000000 +0100
-+++ libpcap.dev/pcap-linux.c	2005-10-22 23:43:59.726120250 +0200
-@@ -27,7 +27,7 @@
- 
- #ifndef lint
- static const char rcsid[] _U_ =
--    "@(#) $Header: /tcpdump/master/libpcap/pcap-linux.c,v 1.98.2.4 2003/11/21 10:20:46 guy Exp $ (LBL)";
-+    "@(#) $Header: /export/home/ntop/PF_RING/userland/libpcap-0.8.1-ring/pcap-linux.c,v 1.2 2004/11/25 09:58:00 deri Exp $ (LBL)";
- #endif
- 
- /*
-@@ -83,7 +83,7 @@
- #ifdef HAVE_DAG_API
- #include "pcap-dag.h"
- #endif /* HAVE_DAG_API */
--	  
-+
- #include <errno.h>
- #include <stdlib.h>
- #include <unistd.h>
-@@ -217,6 +217,83 @@
- 	= { 1, &total_insn };
- #endif
- 
-+#define RING /* L.Deri */
-+#define SAFE_RING_MODE /*
-+			  Copy the bucket in order to avoid kernel
-+			  crash if the application faults
-+		       */
-+
-+#ifdef RING
-+unsigned char *write_register;
-+static struct pcap_stat ringStats;
-+u_long  numPollCalls = 0, numReadCalls = 0;
-+
-+#define POLL_SLEEP_STEP         10 /* ns = 0.1 ms */
-+#define POLL_SLEEP_MIN        POLL_SLEEP_STEP
-+#define POLL_SLEEP_MAX        1000 /* ns */
-+#define POLL_QUEUE_MIN_LEN     500 /* # packets */
-+
-+#ifdef SAFE_RING_MODE
-+static char staticBucket[2048];
-+#endif
-+
-+
-+/* ******************************* */
-+
-+int pcap_set_cluster(pcap_t *handle, u_int clusterId) {
-+  return(handle->ring_fd ? setsockopt(handle->ring_fd, 0, SO_ADD_TO_CLUSTER,
-+				      &clusterId, sizeof(clusterId)): -1);
-+}
-+
-+/* ******************************* */
-+
-+int pcap_remove_from_cluster(pcap_t *handle) {
-+  return(handle->ring_fd ?
-+	 setsockopt(handle->ring_fd, 0, SO_REMOVE_FROM_CLUSTER, NULL, 0) : -1);
-+}
-+
-+/* ******************************* */
-+
-+int pcap_set_reflector(pcap_t *handle, char *reflectorDevice) {
-+  return(handle->ring_fd ?
-+	 setsockopt(handle->ring_fd, 0, SO_SET_REFLECTOR,
-+		    &reflectorDevice, strlen(reflectorDevice)) : -1);
-+}
-+
-+/* ******************************* */
-+
-+static int set_if_promisc(const char *device, int set_promisc) {
-+  int sock_fd;
-+  struct ifreq ifr;
-+
-+  if(device == NULL) return(-3);
-+
-+  sock_fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
-+  if(sock_fd <= 0) return(-1);
-+  
-+  memset(&ifr, 0, sizeof(ifr));
-+  strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
-+  if(ioctl(sock_fd, SIOCGIFFLAGS, &ifr) == -1) {  
-+    close(sock_fd);
-+    return(-2);
-+  }	  
-+
-+  if(set_promisc) {
-+    if((ifr.ifr_flags & IFF_PROMISC) == 0) ifr.ifr_flags |= IFF_PROMISC;
-+  } else {
-+    /* Remove promisc */
-+    if((ifr.ifr_flags & IFF_PROMISC) != 0) ifr.ifr_flags &= ~IFF_PROMISC;    
-+  }
-+  
-+  if(ioctl(sock_fd, SIOCSIFFLAGS, &ifr) == -1) 
-+    return(-1);
-+  
-+  close(sock_fd);
-+  return(0);
-+}
-+
-+#endif
-+
- /*
-  *  Get a handle for a live capture from the given device. You can
-  *  pass NULL as device to get all packages (without link level
-@@ -258,6 +335,138 @@
- 	handle->snapshot	= snaplen;
- 	handle->md.timeout	= to_ms;
- 
-+#ifdef RING
-+	handle->ring_fd = handle->fd = socket(PF_RING, SOCK_RAW, htons(ETH_P_ALL));
-+
-+	printf("Open RING [fd=%d]\n", handle->ring_fd);
-+
-+	if(handle->ring_fd > 0) {
-+	  struct sockaddr sa;
-+	  int             rc;
-+	  u_int memSlotsLen;
-+
-+	  err = 0;
-+	  sa.sa_family   = PF_RING;
-+	  snprintf(sa.sa_data, sizeof(sa.sa_data), "%s", device);
-+	  rc = bind(handle->ring_fd, (struct sockaddr *)&sa, sizeof(sa));
-+
-+	  if(rc == 0) {
-+
-+
-+	    handle->md.device = strdup(device);
-+	    handle->ring_buffer = (char *)mmap(NULL, PAGE_SIZE,
-+					       PROT_READ|PROT_WRITE,
-+					       MAP_SHARED,
-+					       handle->ring_fd, 0);
-+
-+	    if(handle->ring_buffer == MAP_FAILED) {
-+	      sprintf(ebuf, "mmap() failed");
-+	      return (NULL);
-+	    }
-+
-+	    handle->slots_info = (FlowSlotInfo *)handle->ring_buffer;
-+	    if(handle->slots_info->version != RING_FLOWSLOT_VERSION) {
-+	      snprintf(ebuf, PCAP_ERRBUF_SIZE, "Wrong RING version: "
-+		      "kernel is %i, libpcap was compiled with %i\n",
-+		      handle->slots_info->version, RING_FLOWSLOT_VERSION);
-+	      return (NULL);
-+	    }
-+	    memSlotsLen = handle->slots_info->tot_mem;
-+	    munmap(handle->ring_buffer, PAGE_SIZE);
-+
-+	    handle->ring_buffer = (char *)mmap(NULL, memSlotsLen,
-+					      PROT_READ|PROT_WRITE,
-+					      MAP_SHARED, handle->ring_fd, 0);
-+
-+	    if(handle->ring_buffer == MAP_FAILED) {
-+	      sprintf(ebuf, "mmap() failed");
-+	      return (NULL);
-+	    }
-+
-+	    handle->slots_info   = (FlowSlotInfo *)handle->ring_buffer;
-+	    handle->ring_slots = (char *)(handle->ring_buffer+sizeof(FlowSlotInfo));
-+
-+	    /* Safety check */
-+	    if(handle->slots_info->remove_idx >= handle->slots_info->tot_slots)
-+	      handle->slots_info->remove_idx = 0;
-+
-+	    handle->page_id = PAGE_SIZE, handle->slot_id = 0,
-+	      handle->pkts_per_page = 0;
-+
-+	    if(0) {
-+	      int i;
-+	      
-+	      for(i=0; i<handle->slots_info->tot_slots; i++) {
-+		unsigned long idx = i*handle->slots_info->slot_len;
-+		FlowSlot *slot = (FlowSlot*)&handle->ring_slots[idx];
-+		
-+		printf("RING: Setting RING_MAGIC_VALUE into slot %d [displacement=%lu]\n", i, idx);
-+		slot->magic = RING_MAGIC_VALUE; slot->slot_state = 0;
-+		printf("RING: slot[%d]: magic=%d, slot_state=%d\n", 
-+		       slot->magic, slot->slot_state);
-+	      }
-+	    }
-+
-+
-+	    /* Set defaults */
-+	    handle->linktype = DLT_EN10MB;
-+	    handle->offset = 2;
-+
-+	    printf("RING (%s): tot_slots=%d/slot_len=%d/"
-+		   "insertIdx=%d/remove_idx=%d/dropped=%d\n",
-+		   device,
-+		   handle->slots_info->tot_slots,
-+		   handle->slots_info->slot_len,
-+		   handle->slots_info->insert_idx,
-+		   handle->slots_info->remove_idx,
-+		   handle->slots_info->tot_lost);
-+
-+	    ringStats.ps_recv = handle->slots_info->tot_read;
-+	    ringStats.ps_drop = handle->slots_info->tot_lost;
-+
-+	    if(promisc) {
-+	      struct ifreq ifr;
-+
-+	      err = 0;
-+	      memset(&ifr, 0, sizeof(ifr));
-+	      strncpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
-+	      if (ioctl(handle->fd, SIOCGIFFLAGS, &ifr) == -1) {
-+		snprintf(ebuf, PCAP_ERRBUF_SIZE,
-+			 "ioctl: %s", pcap_strerror(errno));
-+		err = 1;
-+	      }
-+
-+	      if(err == 0) {
-+		if ((ifr.ifr_flags & IFF_PROMISC) == 0) {
-+		  /*
-+		   * Promiscuous mode isn't currently on,
-+		   * so turn it on, and remember that
-+		   * we should turn it off when the
-+		   * pcap_t is closed.
-+		   */
-+
-+		  ifr.ifr_flags |= IFF_PROMISC;
-+		  if (ioctl(handle->fd, SIOCSIFFLAGS, &ifr) == -1) {
-+		    snprintf(ebuf, PCAP_ERRBUF_SIZE,
-+			     "ioctl: %s", pcap_strerror(errno));
-+		    err = 1;
-+		  }
-+		}
-+
-+		if(err == 0)
-+		  handle->md.clear_promisc = 1;
-+	      }
-+	    }
-+
-+	    if(err == 0)
-+	      goto open_open_live_final;
-+	  }
-+
-+	  /* Don't put 'else' above... */
-+	  close(handle->ring_fd);
-+	  /* Continue without ring support */
-+	}
-+#endif
- 	/*
- 	 * NULL and "any" are special devices which give us the hint to
- 	 * monitor all devices.
-@@ -397,6 +606,9 @@
- 		return NULL;
- 	}
- 
-+#ifdef RING
-+ open_open_live_final:
-+#endif
- 	/*
- 	 * "handle->fd" is a socket, so "select()" and "poll()"
- 	 * should work on it.
-@@ -449,6 +661,120 @@
- 	int			packet_len, caplen;
- 	struct pcap_pkthdr	pcap_header;
- 
-+#ifdef RING
-+	if(handle->ring_buffer != NULL) {
-+	  u_int idx, numRuns = 0, ptrAddr;
-+	  FlowSlot *slot;
-+	  
-+	  slot = (FlowSlot*)&handle->ring_slots[handle->slots_info->remove_idx*handle->slots_info->slot_len];
-+
-+	  while(1) {
-+	    u_int32_t queuedPkts;
-+
-+	    if(handle->slots_info->tot_insert >= handle->slots_info->tot_read)
-+	      queuedPkts = handle->slots_info->tot_insert - handle->slots_info->tot_read;
-+	    else
-+	      queuedPkts = handle->slots_info->tot_slots + handle->slots_info->tot_insert - handle->slots_info->tot_read;
-+
-+	    if(queuedPkts && (slot->slot_state == 1)) {
-+	      char *bucket = &slot->bucket;
-+
-+#ifdef RING_MAGIC
-+	      if(slot->magic != RING_MAGIC_VALUE) {
-+		printf("==>> Bad Magic [remove_idx=%u][insert_idx=%u][ptrAddr=%u]\n",
-+		       handle->slots_info->remove_idx,
-+		       handle->slots_info->insert_idx, 
-+		       ptrAddr);
-+		slot->magic = RING_MAGIC_VALUE;
-+	      }
-+#endif
-+
-+
-+	      handle->md.stat.ps_recv++;
-+
-+#ifdef SAFE_RING_MODE
-+	      {
-+		struct pcap_pkthdr *hdr = (struct pcap_pkthdr*)bucket;
-+		int bktLen = hdr->caplen;
-+
-+		if(bktLen > sizeof(staticBucket))
-+		  bktLen = sizeof(staticBucket);
-+
-+		memcpy(staticBucket, &bucket[sizeof(struct pcap_pkthdr)], bktLen);
-+
-+#ifdef RING_DEBUG
-+		printf("==>> [remove_idx=%u][insert_idx=%u][ptrAddr=%u]\n",
-+		       handle->slots_info->remove_idx,
-+		       handle->slots_info->insert_idx, 
-+		       ptrAddr);
-+#endif
-+
-+		callback(userdata, hdr, staticBucket);
-+	      }
-+#else
-+	      callback(userdata,
-+		       (const struct pcap_pkthdr*)bucket,
-+		       (const u_char*)&bucket[sizeof(struct pcap_pkthdr)]);
-+#endif
-+
-+	      if(handle->slots_info->remove_idx >= (handle->slots_info->tot_slots-1)) {
-+		handle->slots_info->remove_idx = 0;
-+		handle->page_id = PAGE_SIZE, handle->slot_id = 0, handle->pkts_per_page = 0;
-+	      } else {
-+		handle->slots_info->remove_idx++;
-+		handle->pkts_per_page++, handle->slot_id += handle->slots_info->slot_len;
-+	      }
-+
-+	      handle->slots_info->tot_read++;
-+	      slot->slot_state = 0;
-+
-+	      return(1);
-+	    } else {
-+	      struct pollfd pfd;
-+	      int rc;
-+
-+	      /* Sleep when nothing is happening */
-+	      pfd.fd      = handle->ring_fd;
-+	      pfd.events  = POLLIN|POLLERR;
-+	      pfd.revents = 0;
-+
-+#ifdef RING_DEBUG
-+	      printf("==>> poll [remove_idx=%u][insert_idx=%u][loss=%d][queuedPkts=%u]"
-+		     "[slot_state=%d][tot_insert=%u][tot_read=%u]\n",
-+		     handle->slots_info->remove_idx,
-+		     handle->slots_info->insert_idx,
-+		     handle->slots_info->tot_lost, 
-+		     queuedPkts, slot->slot_state,
-+		     handle->slots_info->tot_insert,
-+		     handle->slots_info->tot_read);
-+	      #endif
-+	      
-+#ifdef RING_DEBUG
-+	      printf("==>> poll @ [remove_idx=%u][slot_id=%u]\n", handle->slots_info->remove_idx, handle->slot_id);
-+#endif
-+	      errno = 0;
-+	      rc = poll(&pfd, 1, -1);
-+#ifdef RING_DEBUG
-+	      printf("==>> poll returned %d [%s][errno=%d][break_loop=%d]\n",
-+		     rc, strerror(errno), errno, handle->break_loop);
-+#endif
-+	      numPollCalls++;
-+
-+	      if(rc == -1) {
-+		if(errno == EINTR) {
-+		  if(handle->break_loop) {
-+		    handle->break_loop = 0;
-+		    return(-2);
-+		  } else
-+		    return(0);
-+		} else
-+		  return(-1);
-+	      }
-+	    }
-+	  } /* while() */
-+	}
-+#endif
-+
- #ifdef HAVE_PF_PACKET_SOCKETS
- 	/*
- 	 * If this is a cooked device, leave extra room for a
-@@ -688,6 +1014,22 @@
- 	socklen_t len = sizeof (struct tpacket_stats);
- #endif
- 
-+#ifdef RING
-+	if(handle->ring_fd > 0) {
-+	  stats->ps_recv = handle->slots_info->tot_read-ringStats.ps_recv;
-+	  stats->ps_drop = handle->slots_info->tot_lost-ringStats.ps_drop;
-+
-+	  printf("RING: numPollCalls=%d [%.1f packets/call]\n",
-+		 numPollCalls, (float)stats->ps_recv/(float)numPollCalls);
-+	  printf("RING: [tot_pkts=%u][tot_read=%u][tot_lost=%u]\n", 
-+		 handle->slots_info->tot_pkts,
-+		 handle->slots_info->tot_read,
-+		 handle->slots_info->tot_lost);
-+
-+	  return(0);
-+	}
-+#endif
-+
- #ifdef HAVE_TPACKET_STATS
- 	/*
- 	 * Try to get the packet counts from the kernel.
-@@ -879,6 +1221,11 @@
- 		}
- 	}
- 
-+
-+#ifdef RING
-+	if(handle->ring_fd <= 0) can_filter_in_kernel = 0;
-+#endif
-+
- 	if (can_filter_in_kernel) {
- 		if ((err = set_kernel_filter(handle, &fcode)) == 0)
- 		{
-@@ -1348,7 +1695,7 @@
- 			memset(&mr, 0, sizeof(mr));
- 			mr.mr_ifindex = device_id;
- 			mr.mr_type    = PACKET_MR_PROMISC;
--			if (setsockopt(sock_fd, SOL_PACKET,
-+			if (setsockopt(sock_fd, 0 /* SOL_PACKET */,
- 				PACKET_ADD_MEMBERSHIP, &mr, sizeof(mr)) == -1)
- 			{
- 				snprintf(ebuf, PCAP_ERRBUF_SIZE,
-@@ -1425,10 +1772,11 @@
- 
- 	/* Any pending errors, e.g., network is down? */
- 
--	if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &errlen) == -1) {
--		snprintf(ebuf, PCAP_ERRBUF_SIZE,
--			"getsockopt: %s", pcap_strerror(errno));
--		return -2;
-+	if ((getsockopt(fd, PF_RING, SO_ERROR, &err, &errlen) == -1)
-+	    && (getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &errlen) == -1)) {
-+	  snprintf(ebuf, PCAP_ERRBUF_SIZE,
-+		   "getsockopt: %s", pcap_strerror(errno));
-+	  return -2;
- 	}
- 
- 	if (err > 0) {
-@@ -1482,6 +1830,13 @@
- 	struct pcap	*p, *prevp;
- 	struct ifreq	ifr;
- 
-+#ifdef RING
-+	if(handle->ring_buffer != NULL) {
-+	  munmap(handle->ring_buffer, handle->slots_info->tot_mem);
-+	  handle->ring_buffer = NULL;
-+	}
-+#endif
-+
- 	if (handle->md.clear_promisc) {
- 		/*
- 		 * We put the interface into promiscuous mode; take
-@@ -1698,11 +2053,11 @@
- 	}
- 
- 	/* Any pending errors, e.g., network is down? */
--
--	if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &errlen) == -1) {
--		snprintf(ebuf, PCAP_ERRBUF_SIZE,
--			"getsockopt: %s", pcap_strerror(errno));
--		return -1;
-+	if((getsockopt(fd, PF_RING, SO_ERROR, &err, &errlen) == -1)
-+	   && (getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &errlen) == -1)) {
-+	  snprintf(ebuf, PCAP_ERRBUF_SIZE,
-+		   "getsockopt: %s", pcap_strerror(errno));
-+	  return -1;
- 	}
- 
- 	if (err > 0) {
-@@ -1924,8 +2279,11 @@
- 	 * the filtering done in userland even if it could have been
- 	 * done in the kernel.
- 	 */
--	if (setsockopt(handle->fd, SOL_SOCKET, SO_ATTACH_FILTER,
--		       &total_fcode, sizeof(total_fcode)) == 0) {
-+	printf("pcap[setsockopt(%d)]\n", 0);
-+	if (setsockopt(handle->fd, 0 /* SOL_SOCKET */,
-+		       SO_ATTACH_FILTER,
-+		       &total_fcode,
-+		       sizeof(total_fcode)) == 0) {
- 		char drain[1];
- 
- 		/*
-@@ -1933,6 +2291,9 @@
- 		 */
- 		total_filter_on = 1;
- 
-+#ifdef RING
-+		if(!handle->ring_fd) {
-+#endif
- 		/*
- 		 * Save the socket's current mode, and put it in
- 		 * non-blocking mode; we drain it by reading packets
-@@ -1955,12 +2316,15 @@
- 				return -2;
- 			}
- 		}
--	}
-+#ifdef RING
-+		}
-+#endif
-+}
- 
- 	/*
- 	 * Now attach the new filter.
- 	 */
--	ret = setsockopt(handle->fd, SOL_SOCKET, SO_ATTACH_FILTER,
-+	ret = setsockopt(handle->fd, 0 /* SOL_SOCKET */, SO_ATTACH_FILTER,
- 			 fcode, sizeof(*fcode));
- 	if (ret == -1 && total_filter_on) {
- 		/*
-@@ -1993,7 +2357,8 @@
- 	/* setsockopt() barfs unless it get a dummy parameter */
- 	int dummy;
- 
--	return setsockopt(handle->fd, SOL_SOCKET, SO_DETACH_FILTER,
--				   &dummy, sizeof(dummy));
-+	return setsockopt(handle->fd, handle->ring_fd > 0 ? PF_RING : SOL_SOCKET,
-+			  SO_DETACH_FILTER,
-+			  &dummy, sizeof(dummy));
- }
- #endif