Changeset 0a65ed8

Timestamp:

04/24/07 14:09:33 (14 years ago)

Author:

Perry Lorier <perry@…>

Branches:

4.0.1-hotfixes, cachetimestamps, develop, dpdk-ndag, etsilive, getfragoff, help, libtrace4, master, ndag_format, pfring, rc-4.0.1, rc-4.0.2, rc-4.0.3, rc-4.0.4, ringdecrementfix, ringperformance, ringtimestampfixes

Children:

b25f4b0

Parents:

2132cfb

Message:

Add support for truncating packets to "snaplen" bytes

Location:

tools/tracesplit

Files:

• tracesplit.1 (modified) (2 diffs)
• tracesplit.c (modified) (5 diffs)

tools/tracesplit/tracesplit.1

@@ -11 +11 @@
 [ \fB-e \fRunixtime | \fB--endtime=\fRunixtime]
 [ \fB-m \fRmaxfiles | \fB--maxfiles=\fRmaxfiles]
+[ \fB-S \fRsnaplen | \fB--snaplen=\fRsnaplen]
 inputuri outputuri ...
 .SH DESCRIPTION
@@ -44 +45 @@
 do not create more than "maxfiles" trace files
 
+.TP
+\fB\-S\fR snaplen
+Truncate packets to "snaplen" bytes long.
+
 .SH EXAMPLES
 create a 1MB erf trace of port 80 traffic.

tools/tracesplit/tracesplit.c

@@ -38 +38 @@
         "-m --maxfiles=n        Create a maximum of n trace files\n"
         "-H --libtrace-help     Print libtrace runtime documentation\n"
+        "-S --snaplen           Snap packets at the specified length\n"
         ,argv0);
         exit(1);
@@ -66 +67 @@
         uint64_t maxfiles = UINT64_MAX;
         uint64_t filescreated = 0;
+        uint16_t snaplen = 0;
         
         if (argc<2) {
@@ -84 +86 @@
                         { "libtrace-help", 0, 0, 'H' },
                         { "maxfiles",      1, 0, 'm' },
+                        { "snaplen",       1, 0, 'S' },
                         { NULL,            0, 0, 0   },
                 };
 
-                int c=getopt_long(argc, argv, "f:c:b:s:e:i:m:H",
+                int c=getopt_long(argc, argv, "f:c:b:s:e:i:m:S:H",
                                 long_options, &option_index);
 
@@ -107 +110 @@
                                   break;
                         case 'm': maxfiles=atoi(optarg);
+                                  break;
+                        case 'S': snaplen=atoi(optarg);
                                   break;
                         case 'H':
@@ -142 +147 @@
                 if (trace_read_packet(input,packet)<1) {
                         break;
+                }
+
+                if (snaplen>0) {
+                        trace_set_capture_length(packet,snaplen);
                 }