[PATCH,pktgen] account for preamble and inter-packet gap

[Lennert Buytenhek <buytenh@xxxxxxxxxxxxxx>]

Hi!

If you account for the Frame Check Sequence when computing bandwidth
stats, it's only fair that you count the preamble and inter-packet gap
as well.  Suggested patch attached.


cheers,
Lennert


--- pktgen.c.orig       2004-11-28 22:27:50.008829106 +0100
+++ pktgen.c    2004-11-28 22:30:48.773867119 +0100
@@ -2564,7 +2564,7 @@
 static void show_results(struct pktgen_dev *pkt_dev, int nr_frags)
 {
        __u64 total_us, bps, mbps, pps, idle;
-       int size = pkt_dev->cur_pkt_size + 4; /* incl 32bit ethernet CRC */
+       int size = pkt_dev->cur_pkt_size + 4 + 8 + 12; /* incl 32bit ethernet 
CRC plus preamble plus inter-packet gap */
        char *p = pkt_dev->result;
 
        total_us = pkt_dev->stopped_at - pkt_dev->started_at;
@@ -2777,7 +2777,7 @@
                        pkt_dev->last_ok = 1;    
                        pkt_dev->sofar++;
                        pkt_dev->seq_num++;
-                       pkt_dev->tx_bytes += (pkt_dev->cur_pkt_size + 4); /* 
count csum */
+                       pkt_dev->tx_bytes += (pkt_dev->cur_pkt_size + 4 + 8 + 
12); /* count csum and preamble and inter-packet gap*/
                        
                } else if (ret == NETDEV_TX_LOCKED 
                           && (odev->features & NETIF_F_LLTX)) {