/*
- * pcap-dag.c: Packet capture interface for Endace DAG card.
+ * pcap-dag.c: Packet capture interface for Emulex EndaceDAG cards.
*
* The functionality of this code attempts to mimic that of pcap-linux as much
* as possible. This code is compiled in several different ways depending on
* called as required from their pcap-linux/bpf equivalents.
*
* Authors: Richard Littin, Sean Irvine ({richard,sean}@reeltwo.com)
- * Stephen Donnelly <support@endace.com>
+ * Modifications: Jesper Peterson
+ * Koryn Grant
+ * Stephen Donnelly <stephen.donnelly@emulex.com>
*/
-#ifndef lint
-static const char rcsid[] _U_ =
- "@(#) $Header: /tcpdump/master/libpcap/pcap-dag.c,v 1.29 2007-06-22 06:32:06 guy Exp $ (LBL)";
-#endif
-
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "dagnew.h"
#include "dagapi.h"
+#include "dagpci.h"
+
+#include "pcap-dag.h"
+
+/*
+ * DAG devices have names beginning with "dag", followed by a number
+ * from 0 to DAG_MAX_BOARDS, then optionally a colon and a stream number
+ * from 0 to DAG_STREAM_MAX.
+ */
+#ifndef DAG_MAX_BOARDS
+#define DAG_MAX_BOARDS 32
+#endif
+
+
+#ifndef TYPE_AAL5
+#define TYPE_AAL5 4
+#endif
+
+#ifndef TYPE_MC_HDLC
+#define TYPE_MC_HDLC 5
+#endif
+
+#ifndef TYPE_MC_RAW
+#define TYPE_MC_RAW 6
+#endif
+
+#ifndef TYPE_MC_ATM
+#define TYPE_MC_ATM 7
+#endif
+
+#ifndef TYPE_MC_RAW_CHANNEL
+#define TYPE_MC_RAW_CHANNEL 8
+#endif
+
+#ifndef TYPE_MC_AAL5
+#define TYPE_MC_AAL5 9
+#endif
+
+#ifndef TYPE_COLOR_HDLC_POS
+#define TYPE_COLOR_HDLC_POS 10
+#endif
+
+#ifndef TYPE_COLOR_ETH
+#define TYPE_COLOR_ETH 11
+#endif
+
+#ifndef TYPE_MC_AAL2
+#define TYPE_MC_AAL2 12
+#endif
+
+#ifndef TYPE_IP_COUNTER
+#define TYPE_IP_COUNTER 13
+#endif
+
+#ifndef TYPE_TCP_FLOW_COUNTER
+#define TYPE_TCP_FLOW_COUNTER 14
+#endif
+
+#ifndef TYPE_DSM_COLOR_HDLC_POS
+#define TYPE_DSM_COLOR_HDLC_POS 15
+#endif
+
+#ifndef TYPE_DSM_COLOR_ETH
+#define TYPE_DSM_COLOR_ETH 16
+#endif
+
+#ifndef TYPE_COLOR_MC_HDLC_POS
+#define TYPE_COLOR_MC_HDLC_POS 17
+#endif
+
+#ifndef TYPE_AAL2
+#define TYPE_AAL2 18
+#endif
+
+#ifndef TYPE_COLOR_HASH_POS
+#define TYPE_COLOR_HASH_POS 19
+#endif
+
+#ifndef TYPE_COLOR_HASH_ETH
+#define TYPE_COLOR_HASH_ETH 20
+#endif
+
+#ifndef TYPE_INFINIBAND
+#define TYPE_INFINIBAND 21
+#endif
+
+#ifndef TYPE_IPV4
+#define TYPE_IPV4 22
+#endif
+
+#ifndef TYPE_IPV6
+#define TYPE_IPV6 23
+#endif
+
+#ifndef TYPE_RAW_LINK
+#define TYPE_RAW_LINK 24
+#endif
+
+#ifndef TYPE_INFINIBAND_LINK
+#define TYPE_INFINIBAND_LINK 25
+#endif
+
+#ifndef TYPE_PAD
+#define TYPE_PAD 48
+#endif
#define ATM_CELL_SIZE 52
#define ATM_HDR_SIZE 4
unsigned short vci; /* VCI */
};
+/*
+ * Private data for capturing on DAG devices.
+ */
+struct pcap_dag {
+ struct pcap_stat stat;
+#ifdef HAVE_DAG_STREAMS_API
+ u_char *dag_mem_bottom; /* DAG card current memory bottom pointer */
+ u_char *dag_mem_top; /* DAG card current memory top pointer */
+#else /* HAVE_DAG_STREAMS_API */
+ void *dag_mem_base; /* DAG card memory base address */
+ u_int dag_mem_bottom; /* DAG card current memory bottom offset */
+ u_int dag_mem_top; /* DAG card current memory top offset */
+#endif /* HAVE_DAG_STREAMS_API */
+ int dag_fcs_bits; /* Number of checksum bits from link layer */
+ int dag_offset_flags; /* Flags to pass to dag_offset(). */
+ int dag_stream; /* DAG stream number */
+ int dag_timeout; /* timeout specified to pcap_open_live.
+ * Same as in linux above, introduce
+ * generally? */
+};
+
typedef struct pcap_dag_node {
struct pcap_dag_node *next;
pcap_t *p;
#define IS_BIGENDIAN() (*((unsigned char *)&endian_test_word))
-
-#ifdef DAG_ONLY
-/* This code is required when compiling for a DAG device only. */
-#include "pcap-dag.h"
-
-/* Replace dag function names with pcap equivalent. */
-#define dag_open_live pcap_open_live
-#define dag_platform_finddevs pcap_platform_finddevs
-#endif /* DAG_ONLY */
-
#define MAX_DAG_PACKET 65536
static unsigned char TempPkt[MAX_DAG_PACKET];
*/
static void
-dag_platform_close(pcap_t *p)
+dag_platform_cleanup(pcap_t *p)
{
-
- if (p != NULL) {
+ struct pcap_dag *pd = p->priv;
+
#ifdef HAVE_DAG_STREAMS_API
- if(dag_stop_stream(p->fd, p->md.dag_stream) < 0)
- fprintf(stderr,"dag_stop_stream: %s\n", strerror(errno));
-
- if(dag_detach_stream(p->fd, p->md.dag_stream) < 0)
- fprintf(stderr,"dag_detach_stream: %s\n", strerror(errno));
+ if(dag_stop_stream(p->fd, pd->dag_stream) < 0)
+ fprintf(stderr,"dag_stop_stream: %s\n", strerror(errno));
+
+ if(dag_detach_stream(p->fd, pd->dag_stream) < 0)
+ fprintf(stderr,"dag_detach_stream: %s\n", strerror(errno));
#else
- if(dag_stop(p->fd) < 0)
- fprintf(stderr,"dag_stop: %s\n", strerror(errno));
+ if(dag_stop(p->fd) < 0)
+ fprintf(stderr,"dag_stop: %s\n", strerror(errno));
#endif /* HAVE_DAG_STREAMS_API */
+ if(p->fd != -1) {
if(dag_close(p->fd) < 0)
fprintf(stderr,"dag_close: %s\n", strerror(errno));
+ p->fd = -1;
}
delete_pcap_dag(p);
+ pcap_cleanup_live_common(p);
/* Note: don't need to call close(p->fd) here as dag_close(p->fd) does this. */
}
{
while (pcap_dags != NULL) {
if (pcap_dags->pid == getpid()) {
- dag_platform_close(pcap_dags->p);
+ if (pcap_dags->p != NULL)
+ dag_platform_cleanup(pcap_dags->p);
} else {
delete_pcap_dag(pcap_dags->p);
}
return 0;
}
+static unsigned int
+dag_erf_ext_header_count(uint8_t * erf, size_t len)
+{
+ uint32_t hdr_num = 0;
+ uint8_t hdr_type;
+
+ /* basic sanity checks */
+ if ( erf == NULL )
+ return 0;
+ if ( len < 16 )
+ return 0;
+
+ /* check if we have any extension headers */
+ if ( (erf[8] & 0x80) == 0x00 )
+ return 0;
+
+ /* loop over the extension headers */
+ do {
+
+ /* sanity check we have enough bytes */
+ if ( len < (24 + (hdr_num * 8)) )
+ return hdr_num;
+
+ /* get the header type */
+ hdr_type = erf[(16 + (hdr_num * 8))];
+ hdr_num++;
+
+ } while ( hdr_type & 0x80 );
+
+ return hdr_num;
+}
+
/*
* Read at most max_packets from the capture stream and call the callback
* for each of them. Returns the number of packets handled, -1 if an
static int
dag_read(pcap_t *p, int cnt, pcap_handler callback, u_char *user)
{
+ struct pcap_dag *pd = p->priv;
unsigned int processed = 0;
- int flags = p->md.dag_offset_flags;
+ int flags = pd->dag_offset_flags;
unsigned int nonblocking = flags & DAGF_NONBLOCK;
+ unsigned int num_ext_hdr = 0;
+ unsigned int ticks_per_second;
/* Get the next bufferful of packets (if necessary). */
- while (p->md.dag_mem_top - p->md.dag_mem_bottom < dag_record_size) {
-
+ while (pd->dag_mem_top - pd->dag_mem_bottom < dag_record_size) {
+
/*
* Has "pcap_breakloop()" been called?
*/
* If non-block is specified it will return immediately. The user
* is then responsible for efficiency.
*/
- p->md.dag_mem_top = dag_advance_stream(p->fd, p->md.dag_stream, &(p->md.dag_mem_bottom));
+ if ( NULL == (pd->dag_mem_top = dag_advance_stream(p->fd, pd->dag_stream, &(pd->dag_mem_bottom))) ) {
+ return -1;
+ }
#else
/* dag_offset does not support timeouts */
- p->md.dag_mem_top = dag_offset(p->fd, &(p->md.dag_mem_bottom), flags);
+ pd->dag_mem_top = dag_offset(p->fd, &(pd->dag_mem_bottom), flags);
#endif /* HAVE_DAG_STREAMS_API */
- if (nonblocking && (p->md.dag_mem_top - p->md.dag_mem_bottom < dag_record_size))
+ if (nonblocking && (pd->dag_mem_top - pd->dag_mem_bottom < dag_record_size))
{
/* Pcap is configured to process only available packets, and there aren't any, return immediately. */
return 0;
}
-
+
if(!nonblocking &&
- p->md.dag_timeout &&
- (p->md.dag_mem_top - p->md.dag_mem_bottom < dag_record_size))
+ pd->dag_timeout &&
+ (pd->dag_mem_top - pd->dag_mem_bottom < dag_record_size))
{
/* Blocking mode, but timeout set and no data has arrived, return anyway.*/
return 0;
}
}
-
+
/* Process the packets. */
- while (p->md.dag_mem_top - p->md.dag_mem_bottom >= dag_record_size) {
+ while (pd->dag_mem_top - pd->dag_mem_bottom >= dag_record_size) {
unsigned short packet_len = 0;
int caplen = 0;
struct pcap_pkthdr pcap_header;
#ifdef HAVE_DAG_STREAMS_API
- dag_record_t *header = (dag_record_t *)(p->md.dag_mem_bottom);
+ dag_record_t *header = (dag_record_t *)(pd->dag_mem_bottom);
#else
- dag_record_t *header = (dag_record_t *)(p->md.dag_mem_base + p->md.dag_mem_bottom);
+ dag_record_t *header = (dag_record_t *)(pd->dag_mem_base + pd->dag_mem_bottom);
#endif /* HAVE_DAG_STREAMS_API */
- u_char *dp = ((u_char *)header) + dag_record_size;
+ u_char *dp = ((u_char *)header); /* + dag_record_size; */
unsigned short rlen;
-
+
/*
* Has "pcap_breakloop()" been called?
*/
p->break_loop = 0;
return -2;
}
-
+
rlen = ntohs(header->rlen);
if (rlen < dag_record_size)
{
strncpy(p->errbuf, "dag_read: record too small", PCAP_ERRBUF_SIZE);
return -1;
}
- p->md.dag_mem_bottom += rlen;
-
- switch(header->type) {
- case TYPE_ATM:
-#ifdef TYPE_AAL5
- case TYPE_AAL5:
- if (header->type == TYPE_AAL5) {
- packet_len = ntohs(header->wlen);
- caplen = rlen - dag_record_size;
- }
-#endif
-#ifdef TYPE_MC_ATM
- case TYPE_MC_ATM:
- if (header->type == TYPE_MC_ATM) {
- caplen = packet_len = ATM_CELL_SIZE;
- dp+=4;
- }
-#endif
-#ifdef TYPE_MC_AAL5
- case TYPE_MC_AAL5:
- if (header->type == TYPE_MC_AAL5) {
- packet_len = ntohs(header->wlen);
- caplen = rlen - dag_record_size - 4;
- dp+=4;
- }
-#endif
- if (header->type == TYPE_ATM) {
- caplen = packet_len = ATM_CELL_SIZE;
- }
- if (p->linktype == DLT_SUNATM) {
- struct sunatm_hdr *sunatm = (struct sunatm_hdr *)dp;
- unsigned long rawatm;
-
- rawatm = ntohl(*((unsigned long *)dp));
- sunatm->vci = htons((rawatm >> 4) & 0xffff);
- sunatm->vpi = (rawatm >> 20) & 0x00ff;
- sunatm->flags = ((header->flags.iface & 1) ? 0x80 : 0x00) |
- ((sunatm->vpi == 0 && sunatm->vci == htons(5)) ? 6 :
- ((sunatm->vpi == 0 && sunatm->vci == htons(16)) ? 5 :
- ((dp[ATM_HDR_SIZE] == 0xaa &&
- dp[ATM_HDR_SIZE+1] == 0xaa &&
- dp[ATM_HDR_SIZE+2] == 0x03) ? 2 : 1)));
-
- } else {
- packet_len -= ATM_HDR_SIZE;
- caplen -= ATM_HDR_SIZE;
- dp += ATM_HDR_SIZE;
- }
- break;
-
-#ifdef TYPE_DSM_COLOR_ETH
- case TYPE_DSM_COLOR_ETH:
-#endif
-#ifdef TYPE_COLOR_ETH
- case TYPE_COLOR_ETH:
-#endif
- case TYPE_ETH:
- packet_len = ntohs(header->wlen);
- packet_len -= (p->md.dag_fcs_bits >> 3);
- caplen = rlen - dag_record_size - 2;
- if (caplen > packet_len) {
- caplen = packet_len;
- }
- dp += 2;
- break;
-#ifdef TYPE_DSM_COLOR_HDLC_POS
- case TYPE_DSM_COLOR_HDLC_POS:
-#endif
-#ifdef TYPE_COLOR_HDLC_POS
- case TYPE_COLOR_HDLC_POS:
-#endif
- case TYPE_HDLC_POS:
- packet_len = ntohs(header->wlen);
- packet_len -= (p->md.dag_fcs_bits >> 3);
- caplen = rlen - dag_record_size;
- if (caplen > packet_len) {
- caplen = packet_len;
- }
- break;
-#ifdef TYPE_COLOR_MC_HDLC_POS
- case TYPE_COLOR_MC_HDLC_POS:
-#endif
-#ifdef TYPE_MC_HDLC
- case TYPE_MC_HDLC:
- packet_len = ntohs(header->wlen);
- packet_len -= (p->md.dag_fcs_bits >> 3);
- caplen = rlen - dag_record_size - 4;
- if (caplen > packet_len) {
- caplen = packet_len;
- }
- /* jump the MC_HDLC_HEADER */
- dp += 4;
- if (p->linktype == DLT_MTP2_WITH_PHDR) {
- /* Add the MTP2 Pseudo Header */
- caplen += MTP2_HDR_LEN;
- packet_len += MTP2_HDR_LEN;
-
- TempPkt[MTP2_SENT_OFFSET] = 0;
- TempPkt[MTP2_ANNEX_A_USED_OFFSET] = MTP2_ANNEX_A_USED_UNKNOWN;
- *(TempPkt+MTP2_LINK_NUMBER_OFFSET) = ((header->rec.mc_hdlc.mc_header>>16)&0x01);
- *(TempPkt+MTP2_LINK_NUMBER_OFFSET+1) = ((header->rec.mc_hdlc.mc_header>>24)&0xff);
- memcpy(TempPkt+MTP2_HDR_LEN, dp, caplen);
- dp = TempPkt;
- }
- break;
-#endif
- default:
- /* Unhandled ERF type.
- * Ignore rather than generating error
- */
- continue;
- }
-
- if (caplen > p->snapshot)
- caplen = p->snapshot;
+ pd->dag_mem_bottom += rlen;
/* Count lost packets. */
- switch(header->type) {
-#ifdef TYPE_COLOR_HDLC_POS
- /* in this type the color value overwrites the lctr */
+ switch((header->type & 0x7f)) {
+ /* in these types the color value overwrites the lctr */
case TYPE_COLOR_HDLC_POS:
- break;
-#endif
-#ifdef TYPE_COLOR_ETH
- /* in this type the color value overwrites the lctr */
case TYPE_COLOR_ETH:
- break;
-#endif
-#ifdef TYPE_DSM_COLOR_HDLC_POS
- /* in this type the color value overwrites the lctr */
case TYPE_DSM_COLOR_HDLC_POS:
- break;
-#endif
-#ifdef TYPE_DSM_COLOR_ETH
- /* in this type the color value overwrites the lctr */
case TYPE_DSM_COLOR_ETH:
- break;
-#endif
-#ifdef TYPE_COLOR_MC_HDLC_POS
case TYPE_COLOR_MC_HDLC_POS:
+ case TYPE_COLOR_HASH_ETH:
+ case TYPE_COLOR_HASH_POS:
break;
-#endif
default:
if (header->lctr) {
- if (p->md.stat.ps_drop > (UINT_MAX - ntohs(header->lctr))) {
- p->md.stat.ps_drop = UINT_MAX;
+ if (pd->stat.ps_drop > (UINT_MAX - ntohs(header->lctr))) {
+ pd->stat.ps_drop = UINT_MAX;
} else {
- p->md.stat.ps_drop += ntohs(header->lctr);
+ pd->stat.ps_drop += ntohs(header->lctr);
}
}
}
+ if ((header->type & 0x7f) == TYPE_PAD) {
+ continue;
+ }
+
+ num_ext_hdr = dag_erf_ext_header_count(dp, rlen);
+
+ /* ERF encapsulation */
+ /* The Extensible Record Format is not dropped for this kind of encapsulation,
+ * and will be handled as a pseudo header by the decoding application.
+ * The information carried in the ERF header and in the optional subheader (if present)
+ * could be merged with the libpcap information, to offer a better decoding.
+ * The packet length is
+ * o the length of the packet on the link (header->wlen),
+ * o plus the length of the ERF header (dag_record_size), as the length of the
+ * pseudo header will be adjusted during the decoding,
+ * o plus the length of the optional subheader (if present).
+ *
+ * The capture length is header.rlen and the byte stuffing for alignment will be dropped
+ * if the capture length is greater than the packet length.
+ */
+ if (p->linktype == DLT_ERF) {
+ packet_len = ntohs(header->wlen) + dag_record_size;
+ caplen = rlen;
+ switch ((header->type & 0x7f)) {
+ case TYPE_MC_AAL5:
+ case TYPE_MC_ATM:
+ case TYPE_MC_HDLC:
+ case TYPE_MC_RAW_CHANNEL:
+ case TYPE_MC_RAW:
+ case TYPE_MC_AAL2:
+ case TYPE_COLOR_MC_HDLC_POS:
+ packet_len += 4; /* MC header */
+ break;
+
+ case TYPE_COLOR_HASH_ETH:
+ case TYPE_DSM_COLOR_ETH:
+ case TYPE_COLOR_ETH:
+ case TYPE_ETH:
+ packet_len += 2; /* ETH header */
+ break;
+ } /* switch type */
+
+ /* Include ERF extension headers */
+ packet_len += (8 * num_ext_hdr);
+
+ if (caplen > packet_len) {
+ caplen = packet_len;
+ }
+ } else {
+ /* Other kind of encapsulation according to the header Type */
+
+ /* Skip over generic ERF header */
+ dp += dag_record_size;
+ /* Skip over extension headers */
+ dp += 8 * num_ext_hdr;
+
+ switch((header->type & 0x7f)) {
+ case TYPE_ATM:
+ case TYPE_AAL5:
+ if (header->type == TYPE_AAL5) {
+ packet_len = ntohs(header->wlen);
+ caplen = rlen - dag_record_size;
+ }
+ case TYPE_MC_ATM:
+ if (header->type == TYPE_MC_ATM) {
+ caplen = packet_len = ATM_CELL_SIZE;
+ dp+=4;
+ }
+ case TYPE_MC_AAL5:
+ if (header->type == TYPE_MC_AAL5) {
+ packet_len = ntohs(header->wlen);
+ caplen = rlen - dag_record_size - 4;
+ dp+=4;
+ }
+ /* Skip over extension headers */
+ caplen -= (8 * num_ext_hdr);
+
+ if (header->type == TYPE_ATM) {
+ caplen = packet_len = ATM_CELL_SIZE;
+ }
+ if (p->linktype == DLT_SUNATM) {
+ struct sunatm_hdr *sunatm = (struct sunatm_hdr *)dp;
+ unsigned long rawatm;
+
+ rawatm = ntohl(*((unsigned long *)dp));
+ sunatm->vci = htons((rawatm >> 4) & 0xffff);
+ sunatm->vpi = (rawatm >> 20) & 0x00ff;
+ sunatm->flags = ((header->flags.iface & 1) ? 0x80 : 0x00) |
+ ((sunatm->vpi == 0 && sunatm->vci == htons(5)) ? 6 :
+ ((sunatm->vpi == 0 && sunatm->vci == htons(16)) ? 5 :
+ ((dp[ATM_HDR_SIZE] == 0xaa &&
+ dp[ATM_HDR_SIZE+1] == 0xaa &&
+ dp[ATM_HDR_SIZE+2] == 0x03) ? 2 : 1)));
+
+ } else {
+ packet_len -= ATM_HDR_SIZE;
+ caplen -= ATM_HDR_SIZE;
+ dp += ATM_HDR_SIZE;
+ }
+ break;
+
+ case TYPE_COLOR_HASH_ETH:
+ case TYPE_DSM_COLOR_ETH:
+ case TYPE_COLOR_ETH:
+ case TYPE_ETH:
+ packet_len = ntohs(header->wlen);
+ packet_len -= (pd->dag_fcs_bits >> 3);
+ caplen = rlen - dag_record_size - 2;
+ /* Skip over extension headers */
+ caplen -= (8 * num_ext_hdr);
+ if (caplen > packet_len) {
+ caplen = packet_len;
+ }
+ dp += 2;
+ break;
+
+ case TYPE_COLOR_HASH_POS:
+ case TYPE_DSM_COLOR_HDLC_POS:
+ case TYPE_COLOR_HDLC_POS:
+ case TYPE_HDLC_POS:
+ packet_len = ntohs(header->wlen);
+ packet_len -= (pd->dag_fcs_bits >> 3);
+ caplen = rlen - dag_record_size;
+ /* Skip over extension headers */
+ caplen -= (8 * num_ext_hdr);
+ if (caplen > packet_len) {
+ caplen = packet_len;
+ }
+ break;
+
+ case TYPE_COLOR_MC_HDLC_POS:
+ case TYPE_MC_HDLC:
+ packet_len = ntohs(header->wlen);
+ packet_len -= (pd->dag_fcs_bits >> 3);
+ caplen = rlen - dag_record_size - 4;
+ /* Skip over extension headers */
+ caplen -= (8 * num_ext_hdr);
+ if (caplen > packet_len) {
+ caplen = packet_len;
+ }
+ /* jump the MC_HDLC_HEADER */
+ dp += 4;
+#ifdef DLT_MTP2_WITH_PHDR
+ if (p->linktype == DLT_MTP2_WITH_PHDR) {
+ /* Add the MTP2 Pseudo Header */
+ caplen += MTP2_HDR_LEN;
+ packet_len += MTP2_HDR_LEN;
+
+ TempPkt[MTP2_SENT_OFFSET] = 0;
+ TempPkt[MTP2_ANNEX_A_USED_OFFSET] = MTP2_ANNEX_A_USED_UNKNOWN;
+ *(TempPkt+MTP2_LINK_NUMBER_OFFSET) = ((header->rec.mc_hdlc.mc_header>>16)&0x01);
+ *(TempPkt+MTP2_LINK_NUMBER_OFFSET+1) = ((header->rec.mc_hdlc.mc_header>>24)&0xff);
+ memcpy(TempPkt+MTP2_HDR_LEN, dp, caplen);
+ dp = TempPkt;
+ }
+#endif
+ break;
+
+ case TYPE_IPV4:
+ case TYPE_IPV6:
+ packet_len = ntohs(header->wlen);
+ caplen = rlen - dag_record_size;
+ /* Skip over extension headers */
+ caplen -= (8 * num_ext_hdr);
+ if (caplen > packet_len) {
+ caplen = packet_len;
+ }
+ break;
+
+ /* These types have no matching 'native' DLT, but can be used with DLT_ERF above */
+ case TYPE_MC_RAW:
+ case TYPE_MC_RAW_CHANNEL:
+ case TYPE_IP_COUNTER:
+ case TYPE_TCP_FLOW_COUNTER:
+ case TYPE_INFINIBAND:
+ case TYPE_RAW_LINK:
+ case TYPE_INFINIBAND_LINK:
+ default:
+ /* Unhandled ERF type.
+ * Ignore rather than generating error
+ */
+ continue;
+ } /* switch type */
+
+ } /* ERF encapsulation */
+
+ if (caplen > p->snapshot)
+ caplen = p->snapshot;
+
/* Run the packet filter if there is one. */
if ((p->fcode.bf_insns == NULL) || bpf_filter(p->fcode.bf_insns, dp, packet_len, caplen)) {
/* convert between timestamp formats */
register unsigned long long ts;
-
+
if (IS_BIGENDIAN()) {
ts = SWAPLL(header->ts);
} else {
ts = header->ts;
}
+ switch (p->opt.tstamp_precision) {
+ case PCAP_TSTAMP_PRECISION_NANO:
+ ticks_per_second = 1000000000;
+ break;
+ case PCAP_TSTAMP_PRECISION_MICRO:
+ default:
+ ticks_per_second = 1000000;
+ break;
+
+ }
pcap_header.ts.tv_sec = ts >> 32;
- ts = (ts & 0xffffffffULL) * 1000000;
+ ts = (ts & 0xffffffffULL) * ticks_per_second;
ts += 0x80000000; /* rounding */
- pcap_header.ts.tv_usec = ts >> 32;
- if (pcap_header.ts.tv_usec >= 1000000) {
- pcap_header.ts.tv_usec -= 1000000;
+ pcap_header.ts.tv_usec = ts >> 32;
+ if (pcap_header.ts.tv_usec >= ticks_per_second) {
+ pcap_header.ts.tv_usec -= ticks_per_second;
pcap_header.ts.tv_sec++;
}
/* Fill in our own header data */
pcap_header.caplen = caplen;
pcap_header.len = packet_len;
-
+
/* Count the packet. */
- p->md.stat.ps_recv++;
-
+ pd->stat.ps_recv++;
+
/* Call the user supplied callback function */
callback(user, &pcap_header, dp);
-
+
/* Only count packets that pass the filter, for consistency with standard Linux behaviour. */
processed++;
- if (processed == cnt)
+ if (processed == cnt && !PACKET_COUNT_IS_UNLIMITED(cnt))
{
/* Reached the user-specified limit. */
return cnt;
/*
* Get a handle for a live capture from the given DAG device. Passing a NULL
* device will result in a failure. The promisc flag is ignored because DAG
- * cards are always promiscuous. The to_ms parameter is also ignored as it is
- * not supported in hardware.
- *
+ * cards are always promiscuous. The to_ms parameter is used in setting the
+ * API polling parameters.
+ *
* snaplen is now also ignored, until we get per-stream slen support. Set
- * slen with approprite DAG tool BEFORE pcap_open_live().
+ * slen with approprite DAG tool BEFORE pcap_activate().
*
* See also pcap(3).
*/
-pcap_t *
-dag_open_live(const char *device, int snaplen, int promisc, int to_ms, char *ebuf)
+static int dag_activate(pcap_t* handle)
{
+ struct pcap_dag *handlep = handle->priv;
+#if 0
char conf[30]; /* dag configure string */
- pcap_t *handle;
+#endif
char *s;
int n;
daginf_t* daginf;
char * newDev = NULL;
+ char * device = handle->opt.device;
#ifdef HAVE_DAG_STREAMS_API
uint32_t mindata;
struct timeval maxwait;
#endif
if (device == NULL) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "device is NULL: %s", pcap_strerror(errno));
- return NULL;
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "device is NULL: %s", pcap_strerror(errno));
+ return -1;
}
- /* Allocate a handle for this session. */
- handle = malloc(sizeof(*handle));
- if (handle == NULL) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc %s: %s", device, pcap_strerror(errno));
- return NULL;
- }
-
/* Initialize some components of the pcap structure. */
-
- memset(handle, 0, sizeof(*handle));
#ifdef HAVE_DAG_STREAMS_API
newDev = (char *)malloc(strlen(device) + 16);
if (newDev == NULL) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "Can't allocate string for device name: %s\n", pcap_strerror(errno));
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't allocate string for device name: %s", pcap_strerror(errno));
goto fail;
}
-
+
/* Parse input name to get dag device and stream number if provided */
- if (dag_parse_name(device, newDev, strlen(device) + 16, &handle->md.dag_stream) < 0) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "dag_parse_name: %s\n", pcap_strerror(errno));
+ if (dag_parse_name(device, newDev, strlen(device) + 16, &handlep->dag_stream) < 0) {
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_parse_name: %s", pcap_strerror(errno));
goto fail;
}
device = newDev;
- if (handle->md.dag_stream%2) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "dag_parse_name: tx (even numbered) streams not supported for capture\n");
+ if (handlep->dag_stream%2) {
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_parse_name: tx (even numbered) streams not supported for capture");
goto fail;
}
#else
if (strncmp(device, "/dev/", 5) != 0) {
newDev = (char *)malloc(strlen(device) + 5);
if (newDev == NULL) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "Can't allocate string for device name: %s\n", pcap_strerror(errno));
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "Can't allocate string for device name: %s", pcap_strerror(errno));
goto fail;
}
strcpy(newDev, "/dev/");
/* setup device parameters */
if((handle->fd = dag_open((char *)device)) < 0) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "dag_open %s: %s", device, pcap_strerror(errno));
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_open %s: %s", device, pcap_strerror(errno));
goto fail;
}
#ifdef HAVE_DAG_STREAMS_API
/* Open requested stream. Can fail if already locked or on error */
- if (dag_attach_stream(handle->fd, handle->md.dag_stream, 0, 0) < 0) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "dag_attach_stream: %s\n", pcap_strerror(errno));
+ if (dag_attach_stream(handle->fd, handlep->dag_stream, 0, 0) < 0) {
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_attach_stream: %s", pcap_strerror(errno));
goto failclose;
}
/* Set up default poll parameters for stream
* Can be overridden by pcap_set_nonblock()
*/
- if (dag_get_stream_poll(handle->fd, handle->md.dag_stream,
+ if (dag_get_stream_poll(handle->fd, handlep->dag_stream,
&mindata, &maxwait, &poll) < 0) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "dag_get_stream_poll: %s\n", pcap_strerror(errno));
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_get_stream_poll: %s", pcap_strerror(errno));
goto faildetach;
}
-
- /* Amount of data to collect in Bytes before calling callbacks.
- * Important for efficiency, but can introduce latency
- * at low packet rates if to_ms not set!
- */
- mindata = 65536;
- /* Obey to_ms if supplied. This is a good idea!
+ if (handle->opt.immediate) {
+ /* Call callback immediately.
+ * XXX - is this the right way to handle this?
+ */
+ mindata = 0;
+ } else {
+ /* Amount of data to collect in Bytes before calling callbacks.
+ * Important for efficiency, but can introduce latency
+ * at low packet rates if to_ms not set!
+ */
+ mindata = 65536;
+ }
+
+ /* Obey opt.timeout (was to_ms) if supplied. This is a good idea!
* Recommend 10-100ms. Calls will time out even if no data arrived.
*/
- maxwait.tv_sec = to_ms/1000;
- maxwait.tv_usec = (to_ms%1000) * 1000;
+ maxwait.tv_sec = handle->opt.timeout/1000;
+ maxwait.tv_usec = (handle->opt.timeout%1000) * 1000;
- if (dag_set_stream_poll(handle->fd, handle->md.dag_stream,
+ if (dag_set_stream_poll(handle->fd, handlep->dag_stream,
mindata, &maxwait, &poll) < 0) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "dag_set_stream_poll: %s\n", pcap_strerror(errno));
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_set_stream_poll: %s", pcap_strerror(errno));
goto faildetach;
}
-
+
#else
- if((handle->md.dag_mem_base = dag_mmap(handle->fd)) == MAP_FAILED) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE,"dag_mmap %s: %s\n", device, pcap_strerror(errno));
+ if((handlep->dag_mem_base = dag_mmap(handle->fd)) == MAP_FAILED) {
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,"dag_mmap %s: %s", device, pcap_strerror(errno));
goto failclose;
}
/* set the card snap length to the specified snaplen parameter */
/* This is a really bad idea, as different cards have different
* valid slen ranges. Should fix in Config API. */
- if (snaplen == 0 || snaplen > MAX_DAG_SNAPLEN) {
- snaplen = MAX_DAG_SNAPLEN;
+ if (handle->snapshot == 0 || handle->snapshot > MAX_DAG_SNAPLEN) {
+ handle->snapshot = MAX_DAG_SNAPLEN;
} else if (snaplen < MIN_DAG_SNAPLEN) {
- snaplen = MIN_DAG_SNAPLEN;
+ handle->snapshot = MIN_DAG_SNAPLEN;
}
/* snap len has to be a multiple of 4 */
- snprintf(conf, 30, "varlen slen=%d", (snaplen + 3) & ~3);
+ pcap_snprintf(conf, 30, "varlen slen=%d", (snaplen + 3) & ~3);
if(dag_configure(handle->fd, conf) < 0) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE,"dag_configure %s: %s\n", device, pcap_strerror(errno));
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,"dag_configure %s: %s", device, pcap_strerror(errno));
goto faildetach;
}
-#endif
-
+#endif
+
#ifdef HAVE_DAG_STREAMS_API
- if(dag_start_stream(handle->fd, handle->md.dag_stream) < 0) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "dag_start_stream %s: %s\n", device, pcap_strerror(errno));
+ if(dag_start_stream(handle->fd, handlep->dag_stream) < 0) {
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_start_stream %s: %s", device, pcap_strerror(errno));
goto faildetach;
}
#else
if(dag_start(handle->fd) < 0) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "dag_start %s: %s\n", device, pcap_strerror(errno));
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "dag_start %s: %s", device, pcap_strerror(errno));
goto failclose;
}
#endif /* HAVE_DAG_STREAMS_API */
* initialized to zero on startup, it won't give you
* a compiler warning if you make this mistake!
*/
- handle->md.dag_mem_bottom = 0;
- handle->md.dag_mem_top = 0;
- handle->md.dag_fcs_bits = 32;
+ handlep->dag_mem_bottom = 0;
+ handlep->dag_mem_top = 0;
- /* Query the card first for special cases. */
+ /*
+ * Find out how many FCS bits we should strip.
+ * First, query the card to see if it strips the FCS.
+ */
daginf = dag_info(handle->fd);
- if ((0x4200 == daginf->device_code) || (0x4230 == daginf->device_code))
- {
+ if ((0x4200 == daginf->device_code) || (0x4230 == daginf->device_code)) {
/* DAG 4.2S and 4.23S already strip the FCS. Stripping the final word again truncates the packet. */
- handle->md.dag_fcs_bits = 0;
- }
+ handlep->dag_fcs_bits = 0;
- /* Then allow an environment variable to override. */
- if ((s = getenv("ERF_FCS_BITS")) != NULL) {
- if ((n = atoi(s)) == 0 || n == 16|| n == 32) {
- handle->md.dag_fcs_bits = n;
- } else {
- snprintf(ebuf, PCAP_ERRBUF_SIZE,
- "pcap_open_live %s: bad ERF_FCS_BITS value (%d) in environment\n", device, n);
- goto failstop;
+ /* Note that no FCS will be supplied. */
+ handle->linktype_ext = LT_FCS_DATALINK_EXT(0);
+ } else {
+ /*
+ * Start out assuming it's 32 bits.
+ */
+ handlep->dag_fcs_bits = 32;
+
+ /* Allow an environment variable to override. */
+ if ((s = getenv("ERF_FCS_BITS")) != NULL) {
+ if ((n = atoi(s)) == 0 || n == 16 || n == 32) {
+ handlep->dag_fcs_bits = n;
+ } else {
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE,
+ "pcap_activate %s: bad ERF_FCS_BITS value (%d) in environment", device, n);
+ goto failstop;
+ }
+ }
+
+ /*
+ * Did the user request that they not be stripped?
+ */
+ if ((s = getenv("ERF_DONT_STRIP_FCS")) != NULL) {
+ /* Yes. Note the number of bytes that will be
+ supplied. */
+ handle->linktype_ext = LT_FCS_DATALINK_EXT(handlep->dag_fcs_bits/16);
+
+ /* And don't strip them. */
+ handlep->dag_fcs_bits = 0;
}
}
- handle->snapshot = snaplen;
- handle->md.dag_timeout = to_ms;
+ handlep->dag_timeout = handle->opt.timeout;
handle->linktype = -1;
- if (dag_get_datalink(handle) < 0) {
- strcpy(ebuf, handle->errbuf);
+ if (dag_get_datalink(handle) < 0)
goto failstop;
- }
-
+
handle->bufsize = 0;
if (new_pcap_dag(handle) < 0) {
- snprintf(ebuf, PCAP_ERRBUF_SIZE, "new_pcap_dag %s: %s\n", device, pcap_strerror(errno));
+ pcap_snprintf(handle->errbuf, PCAP_ERRBUF_SIZE, "new_pcap_dag %s: %s", device, pcap_strerror(errno));
goto failstop;
}
handle->getnonblock_op = pcap_getnonblock_fd;
handle->setnonblock_op = dag_setnonblock;
handle->stats_op = dag_stats;
- handle->close_op = dag_platform_close;
- handle->md.stat.ps_drop = 0;
- handle->md.stat.ps_recv = 0;
- return handle;
+ handle->cleanup_op = dag_platform_cleanup;
+ handlep->stat.ps_drop = 0;
+ handlep->stat.ps_recv = 0;
+ handlep->stat.ps_ifdrop = 0;
+ return 0;
-#ifdef HAVE_DAG_STREAMS_API
+#ifdef HAVE_DAG_STREAMS_API
failstop:
- if (handle != NULL) {
- if (dag_stop_stream(handle->fd, handle->md.dag_stream) < 0)
- fprintf(stderr,"dag_stop_stream: %s\n", strerror(errno));
+ if (dag_stop_stream(handle->fd, handlep->dag_stream) < 0) {
+ fprintf(stderr,"dag_stop_stream: %s\n", strerror(errno));
}
-
+
faildetach:
- if (handle != NULL) {
- if (dag_detach_stream(handle->fd, handle->md.dag_stream) < 0)
- fprintf(stderr,"dag_detach_stream: %s\n", strerror(errno));
- }
-#else
+ if (dag_detach_stream(handle->fd, handlep->dag_stream) < 0)
+ fprintf(stderr,"dag_detach_stream: %s\n", strerror(errno));
+#else
failstop:
- if (handle != NULL) {
- if (dag_stop(p->fd) < 0)
- fprintf(stderr,"dag_stop: %s\n", strerror(errno));
- }
+ if (dag_stop(handle->fd) < 0)
+ fprintf(stderr,"dag_stop: %s\n", strerror(errno));
#endif /* HAVE_DAG_STREAMS_API */
-
+
failclose:
- if (handle != NULL) {
- if (dag_close(handle->fd) < 0)
- fprintf(stderr,"dag_close: %s\n", strerror(errno));
- }
- if (handle != NULL)
- delete_pcap_dag(handle);
-
+ if (dag_close(handle->fd) < 0)
+ fprintf(stderr,"dag_close: %s\n", strerror(errno));
+ delete_pcap_dag(handle);
+
fail:
+ pcap_cleanup_live_common(handle);
if (newDev != NULL) {
free((char *)newDev);
}
- if (handle != NULL) {
- /*
- * Get rid of any link-layer type list we allocated.
- */
- if (handle->dlt_list != NULL) {
- free(handle->dlt_list);
- }
- free(handle);
+
+ return PCAP_ERROR;
+}
+
+pcap_t *dag_create(const char *device, char *ebuf, int *is_ours)
+{
+ const char *cp;
+ char *cpend;
+ long devnum;
+ pcap_t *p;
+#ifdef HAVE_DAG_STREAMS_API
+ long stream = 0;
+#endif
+
+ /* Does this look like a DAG device? */
+ cp = strrchr(device, '/');
+ if (cp == NULL)
+ cp = device;
+ /* Does it begin with "dag"? */
+ if (strncmp(cp, "dag", 3) != 0) {
+ /* Nope, doesn't begin with "dag" */
+ *is_ours = 0;
+ return NULL;
+ }
+ /* Yes - is "dag" followed by a number from 0 to DAG_MAX_BOARDS-1 */
+ cp += 3;
+ devnum = strtol(cp, &cpend, 10);
+#ifdef HAVE_DAG_STREAMS_API
+ if (*cpend == ':') {
+ /* Followed by a stream number. */
+ stream = strtol(++cpend, &cpend, 10);
+ }
+#endif
+ if (cpend == cp || *cpend != '\0') {
+ /* Not followed by a number. */
+ *is_ours = 0;
+ return NULL;
+ }
+ if (devnum < 0 || devnum >= DAG_MAX_BOARDS) {
+ /* Followed by a non-valid number. */
+ *is_ours = 0;
+ return NULL;
}
+#ifdef HAVE_DAG_STREAMS_API
+ if (stream <0 || stream >= DAG_STREAM_MAX) {
+ /* Followed by a non-valid stream number. */
+ *is_ours = 0;
+ return NULL;
+ }
+#endif
- return NULL;
+ /* OK, it's probably ours. */
+ *is_ours = 1;
+
+ p = pcap_create_common(ebuf, sizeof (struct pcap_dag));
+ if (p == NULL)
+ return NULL;
+
+ p->activate_op = dag_activate;
+
+ /*
+ * We claim that we support microsecond and nanosecond time
+ * stamps.
+ *
+ * XXX Our native precision is 2^-32s, but libpcap doesn't support
+ * power of two precisions yet. We can convert to either MICRO or NANO.
+ */
+ p->tstamp_precision_count = 2;
+ p->tstamp_precision_list = malloc(2 * sizeof(u_int));
+ if (p->tstamp_precision_list == NULL) {
+ pcap_snprintf(ebuf, PCAP_ERRBUF_SIZE, "malloc: %s",
+ pcap_strerror(errno));
+ pcap_close(p);
+ return NULL;
+ }
+ p->tstamp_precision_list[0] = PCAP_TSTAMP_PRECISION_MICRO;
+ p->tstamp_precision_list[1] = PCAP_TSTAMP_PRECISION_NANO;
+ return p;
}
static int
dag_stats(pcap_t *p, struct pcap_stat *ps) {
+ struct pcap_dag *pd = p->priv;
+
/* This needs to be filled out correctly. Hopefully a dagapi call will
provide all necessary information.
*/
- /*p->md.stat.ps_recv = 0;*/
- /*p->md.stat.ps_drop = 0;*/
-
- *ps = p->md.stat;
-
+ /*pd->stat.ps_recv = 0;*/
+ /*pd->stat.ps_drop = 0;*/
+
+ *ps = pd->stat;
+
return 0;
}
/*
- * Simply submit all possible dag names as candidates.
- * pcap_add_if() internally tests each candidate with pcap_open_live(),
- * so any non-existent devices are dropped.
- * For 2.5 try all rx stream names as well.
+ * Previously we just generated a list of all possible names and let
+ * pcap_add_if() attempt to open each one, but with streams this adds up
+ * to 81 possibilities which is inefficient.
+ *
+ * Since we know more about the devices we can prune the tree here.
+ * pcap_add_if() will still retest each device but the total number of
+ * open attempts will still be much less than the naive approach.
*/
int
-dag_platform_finddevs(pcap_if_t **devlistp, char *errbuf)
+dag_findalldevs(pcap_if_t **devlistp, char *errbuf)
{
char name[12]; /* XXX - pick a size */
int ret = 0;
int c;
-
- /* Try all the DAGs 0-9 */
- for (c = 0; c < 9; c++) {
- snprintf(name, 12, "dag%d", c);
- if (pcap_add_if(devlistp, name, 0, NULL, errbuf) == -1) {
- /*
- * Failure.
- */
- ret = -1;
+ char dagname[DAGNAME_BUFSIZE];
+ int dagstream;
+ int dagfd;
+ dag_card_inf_t *inf;
+ char *description;
+
+ /* Try all the DAGs 0-DAG_MAX_BOARDS */
+ for (c = 0; c < DAG_MAX_BOARDS; c++) {
+ pcap_snprintf(name, 12, "dag%d", c);
+ if (-1 == dag_parse_name(name, dagname, DAGNAME_BUFSIZE, &dagstream))
+ {
+ return -1;
}
+ description = NULL;
+ if ( (dagfd = dag_open(dagname)) >= 0 ) {
+ if ((inf = dag_pciinfo(dagfd)))
+ description = dag_device_name(inf->device_code, 1);
+ if (pcap_add_if(devlistp, name, 0, description, errbuf) == -1) {
+ /*
+ * Failure.
+ */
+ ret = -1;
+ }
#ifdef HAVE_DAG_STREAMS_API
- {
- int stream;
- for(stream=0;stream<16;stream+=2) {
- snprintf(name, 10, "dag%d:%d", c, stream);
- if (pcap_add_if(devlistp, name, 0, NULL, errbuf) == -1) {
- /*
- * Failure.
- */
- ret = -1;
+ {
+ int stream, rxstreams;
+ rxstreams = dag_rx_get_stream_count(dagfd);
+ for(stream=0;stream<DAG_STREAM_MAX;stream+=2) {
+ if (0 == dag_attach_stream(dagfd, stream, 0, 0)) {
+ dag_detach_stream(dagfd, stream);
+
+ pcap_snprintf(name, 10, "dag%d:%d", c, stream);
+ if (pcap_add_if(devlistp, name, 0, description, errbuf) == -1) {
+ /*
+ * Failure.
+ */
+ ret = -1;
+ }
+
+ rxstreams--;
+ if(rxstreams <= 0) {
+ break;
+ }
+ }
}
- }
- }
+ }
#endif /* HAVE_DAG_STREAMS_API */
+ dag_close(dagfd);
+ }
+
}
return (ret);
}
if (install_bpf_program(p, fp) < 0)
return -1;
- p->md.use_bpf = 0;
-
return (0);
}
static int
dag_setnonblock(pcap_t *p, int nonblock, char *errbuf)
{
+ struct pcap_dag *pd = p->priv;
+
/*
* Set non-blocking mode on the FD.
* XXX - is that necessary? If not, don't bother calling it,
* and have a "dag_getnonblock()" function that looks at
- * "p->md.dag_offset_flags".
+ * "pd->dag_offset_flags".
*/
if (pcap_setnonblock_fd(p, nonblock, errbuf) < 0)
return (-1);
uint32_t mindata;
struct timeval maxwait;
struct timeval poll;
-
- if (dag_get_stream_poll(p->fd, p->md.dag_stream,
+
+ if (dag_get_stream_poll(p->fd, pd->dag_stream,
&mindata, &maxwait, &poll) < 0) {
- snprintf(errbuf, PCAP_ERRBUF_SIZE, "dag_get_stream_poll: %s\n", pcap_strerror(errno));
+ pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE, "dag_get_stream_poll: %s", pcap_strerror(errno));
return -1;
}
-
+
/* Amount of data to collect in Bytes before calling callbacks.
* Important for efficiency, but can introduce latency
* at low packet rates if to_ms not set!
mindata = 0;
else
mindata = 65536;
-
- if (dag_set_stream_poll(p->fd, p->md.dag_stream,
+
+ if (dag_set_stream_poll(p->fd, pd->dag_stream,
mindata, &maxwait, &poll) < 0) {
- snprintf(errbuf, PCAP_ERRBUF_SIZE, "dag_set_stream_poll: %s\n", pcap_strerror(errno));
+ pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE, "dag_set_stream_poll: %s", pcap_strerror(errno));
return -1;
}
}
#endif /* HAVE_DAG_STREAMS_API */
if (nonblock) {
- p->md.dag_offset_flags |= DAGF_NONBLOCK;
+ pd->dag_offset_flags |= DAGF_NONBLOCK;
} else {
- p->md.dag_offset_flags &= ~DAGF_NONBLOCK;
+ pd->dag_offset_flags &= ~DAGF_NONBLOCK;
}
return (0);
}
-
+
static int
dag_get_datalink(pcap_t *p)
{
- int index=0;
+ struct pcap_dag *pd = p->priv;
+ int index=0, dlt_index=0;
uint8_t types[255];
memset(types, 0, 255);
if (p->dlt_list == NULL && (p->dlt_list = malloc(255*sizeof(*(p->dlt_list)))) == NULL) {
- (void)snprintf(p->errbuf, sizeof(p->errbuf), "malloc: %s", pcap_strerror(errno));
+ (void)pcap_snprintf(p->errbuf, sizeof(p->errbuf), "malloc: %s", pcap_strerror(errno));
return (-1);
}
p->linktype = 0;
-#ifdef HAVE_DAG_GET_ERF_TYPES
+#ifdef HAVE_DAG_GET_STREAM_ERF_TYPES
+ /* Get list of possible ERF types for this card */
+ if (dag_get_stream_erf_types(p->fd, pd->dag_stream, types, 255) < 0) {
+ pcap_snprintf(p->errbuf, sizeof(p->errbuf), "dag_get_stream_erf_types: %s", pcap_strerror(errno));
+ return (-1);
+ }
+
+ while (types[index]) {
+
+#elif defined HAVE_DAG_GET_ERF_TYPES
/* Get list of possible ERF types for this card */
if (dag_get_erf_types(p->fd, types, 255) < 0) {
- snprintf(p->errbuf, sizeof(p->errbuf), "dag_get_erf_types: %s", pcap_strerror(errno));
- return (-1);
+ pcap_snprintf(p->errbuf, sizeof(p->errbuf), "dag_get_erf_types: %s", pcap_strerror(errno));
+ return (-1);
}
-
+
while (types[index]) {
#else
/* Check the type through a dagapi call. */
{
#endif
- switch(types[index]) {
+ switch((types[index] & 0x7f)) {
case TYPE_HDLC_POS:
-#ifdef TYPE_COLOR_HDLC_POS
case TYPE_COLOR_HDLC_POS:
-#endif
-#ifdef TYPE_DSM_COLOR_HDLC_POS
case TYPE_DSM_COLOR_HDLC_POS:
-#endif
+ case TYPE_COLOR_HASH_POS:
+
if (p->dlt_list != NULL) {
- p->dlt_list[index++] = DLT_CHDLC;
- p->dlt_list[index++] = DLT_PPP_SERIAL;
- p->dlt_list[index++] = DLT_FRELAY;
+ p->dlt_list[dlt_index++] = DLT_CHDLC;
+ p->dlt_list[dlt_index++] = DLT_PPP_SERIAL;
+ p->dlt_list[dlt_index++] = DLT_FRELAY;
}
if(!p->linktype)
p->linktype = DLT_CHDLC;
break;
case TYPE_ETH:
-#ifdef TYPE_COLOR_ETH
case TYPE_COLOR_ETH:
-#endif
-#ifdef TYPE_DSM_COLOR_ETH
case TYPE_DSM_COLOR_ETH:
-#endif
+ case TYPE_COLOR_HASH_ETH:
/*
* This is (presumably) a real Ethernet capture; give it a
* link-layer-type list with DLT_EN10MB and DLT_DOCSIS, so
* Ethernet framing).
*/
if (p->dlt_list != NULL) {
- p->dlt_list[index++] = DLT_EN10MB;
- p->dlt_list[index++] = DLT_DOCSIS;
+ p->dlt_list[dlt_index++] = DLT_EN10MB;
+ p->dlt_list[dlt_index++] = DLT_DOCSIS;
}
if(!p->linktype)
p->linktype = DLT_EN10MB;
break;
- case TYPE_ATM:
-#ifdef TYPE_AAL5
+ case TYPE_ATM:
case TYPE_AAL5:
-#endif
-#ifdef TYPE_MC_ATM
case TYPE_MC_ATM:
-#endif
-#ifdef TYPE_MC_AAL5
case TYPE_MC_AAL5:
-#endif
if (p->dlt_list != NULL) {
- p->dlt_list[index++] = DLT_ATM_RFC1483;
- p->dlt_list[index++] = DLT_SUNATM;
+ p->dlt_list[dlt_index++] = DLT_ATM_RFC1483;
+ p->dlt_list[dlt_index++] = DLT_SUNATM;
}
if(!p->linktype)
p->linktype = DLT_ATM_RFC1483;
break;
-#ifdef TYPE_COLOR_MC_HDLC_POS
case TYPE_COLOR_MC_HDLC_POS:
-#endif
-#ifdef TYPE_MC_HDLC
case TYPE_MC_HDLC:
if (p->dlt_list != NULL) {
- p->dlt_list[index++] = DLT_CHDLC;
- p->dlt_list[index++] = DLT_PPP_SERIAL;
- p->dlt_list[index++] = DLT_FRELAY;
- p->dlt_list[index++] = DLT_MTP2;
- p->dlt_list[index++] = DLT_MTP2_WITH_PHDR;
+ p->dlt_list[dlt_index++] = DLT_CHDLC;
+ p->dlt_list[dlt_index++] = DLT_PPP_SERIAL;
+ p->dlt_list[dlt_index++] = DLT_FRELAY;
+ p->dlt_list[dlt_index++] = DLT_MTP2;
+ p->dlt_list[dlt_index++] = DLT_MTP2_WITH_PHDR;
+ p->dlt_list[dlt_index++] = DLT_LAPD;
}
if(!p->linktype)
p->linktype = DLT_CHDLC;
break;
-#endif
- case TYPE_LEGACY:
+ case TYPE_IPV4:
+ case TYPE_IPV6:
if(!p->linktype)
- p->linktype = DLT_NULL;
+ p->linktype = DLT_RAW;
break;
+ case TYPE_LEGACY:
+ case TYPE_MC_RAW:
+ case TYPE_MC_RAW_CHANNEL:
+ case TYPE_IP_COUNTER:
+ case TYPE_TCP_FLOW_COUNTER:
+ case TYPE_INFINIBAND:
+ case TYPE_RAW_LINK:
+ case TYPE_INFINIBAND_LINK:
default:
- snprintf(p->errbuf, sizeof(p->errbuf), "unknown DAG linktype %d", types[index]);
- return (-1);
+ /* Libpcap cannot deal with these types yet */
+ /* Add no 'native' DLTs, but still covered by DLT_ERF */
+ break;
} /* switch */
+ index++;
}
- p->dlt_count = index;
+ p->dlt_list[dlt_index++] = DLT_ERF;
+
+ p->dlt_count = dlt_index;
+
+ if(!p->linktype)
+ p->linktype = DLT_ERF;
return p->linktype;
}
+
+#ifdef DAG_ONLY
+/*
+ * This libpcap build supports only DAG cards, not regular network
+ * interfaces.
+ */
+
+/*
+ * There are no regular interfaces, just DAG interfaces.
+ */
+int
+pcap_platform_finddevs(pcap_if_t **alldevsp, char *errbuf)
+{
+ *alldevsp = NULL;
+ return (0);
+}
+
+/*
+ * Attempts to open a regular interface fail.
+ */
+pcap_t *
+pcap_create_interface(const char *device, char *errbuf)
+{
+ pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "This version of libpcap only supports DAG cards");
+ return NULL;
+}
+#endif
projects / libpcap / blobdiff