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benchmark.c
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benchmark.c
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#include "n2n_wire.h"
#include "n2n_transforms.h"
#include "n2n.h"
#include <sys/time.h>
#include <time.h>
#include <string.h>
#include <stdio.h>
uint8_t PKT_CONTENT[]={
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 };
/* Prototypes */
static ssize_t do_encode_packet( uint8_t * pktbuf, size_t bufsize, const n2n_community_t c );
int main( int argc, char * argv[] )
{
uint8_t pktbuf[N2N_PKT_BUF_SIZE];
n2n_trans_op_t transop_null;
n2n_common_t cmn;
n2n_PACKET_t pkt;
n2n_community_t c;
struct timeval t1;
struct timeval t2;
size_t i;
size_t n;
size_t idx;
size_t rem;
ssize_t nw;
ssize_t tdiff;
transop_null_init( &transop_null );
memset(c,0,sizeof(N2N_COMMUNITY_SIZE));
n=10000;
memcpy( c, "abc123def456", 12 );
gettimeofday( &t1, NULL );
for(i=0; i<n; ++i)
{
nw = do_encode_packet( pktbuf, N2N_PKT_BUF_SIZE, c);
nw += transop_null.fwd( &transop_null,
pktbuf+nw, N2N_PKT_BUF_SIZE-nw,
PKT_CONTENT, sizeof(PKT_CONTENT) );
idx=0;
rem=nw;
decode_common( &cmn, pktbuf, &rem, &idx);
decode_PACKET( &pkt, &cmn, pktbuf, &rem, &idx );
if ( 0 == (i%1000) )
{
fprintf(stderr,".");
}
}
gettimeofday( &t2, NULL );
tdiff = ((t2.tv_sec - t1.tv_sec) * 1000000) + (t2.tv_usec - t1.tv_usec);
fprintf( stderr, "\nrun %u times. (%u -> %u nsec each) %u.%06u -> %u.%06u.\n", i, tdiff, (tdiff *1000)/i, (uint32_t)t1.tv_sec, (uint32_t)t1.tv_usec, (uint32_t)t2.tv_sec, (uint32_t)t2.tv_usec );
return 0;
}
static ssize_t do_encode_packet( uint8_t * pktbuf, size_t bufsize, const n2n_community_t c )
{
n2n_mac_t destMac={0,1,2,3,4,5};
n2n_common_t cmn;
n2n_PACKET_t pkt;
size_t idx;
memset( &cmn, 0, sizeof(cmn) );
cmn.ttl = N2N_DEFAULT_TTL;
cmn.pc = n2n_packet;
cmn.flags=0; /* no options, not from supernode, no socket */
memcpy( cmn.community, c, N2N_COMMUNITY_SIZE );
memset( &pkt, 0, sizeof(pkt) );
memcpy( pkt.srcMac, destMac, N2N_MAC_SIZE);
memcpy( pkt.dstMac, destMac, N2N_MAC_SIZE);
pkt.sock.family=0; /* do not encode sock */
idx=0;
encode_PACKET( pktbuf, &idx, &cmn, &pkt );
traceEvent( TRACE_DEBUG, "encoded PACKET header of size=%u", (unsigned int)idx );
return idx;
}