Reflect new default value of snaplen in man pages.

Default value for snaplen is defined in wiretap/wtap.h:
 #define WTAP_MAX_PACKET_SIZE    262144

and used in capture_opts.c:
    capture_opts->default_options.snaplen         =
    WTAP_MAX_PACKET_SIZE;

but help and man pages don't reflect this change.

Change-Id: I35ddf1e8b7ffd657f4e01b3fe6b4c44c9acece2b
Reviewed-on: https://code.wireshark.org/review/20738
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>

doc/dumpcap.pod

@@ -304,7 +304,7 @@ have to explicitly set it to use it).
 Set the default snapshot length to use when capturing live data.
 No more than I<snaplen> bytes of each network packet will be read into
 memory, or saved to disk.  A value of 0 specifies a snapshot length of
-65535, so that the full packet is captured; this is the default.
+262144, so that the full packet is captured; this is the default.
 
 This option can occur multiple times. If used before the first
 occurrence of the B<-i> option, it sets the default snapshot length.

doc/tshark.pod

@@ -696,7 +696,7 @@ applied.
 Set the default snapshot length to use when capturing live data.
 No more than I<snaplen> bytes of each network packet will be read into
 memory, or saved to disk.  A value of 0 specifies a snapshot length of
-65535, so that the full packet is captured; this is the default.
+262144, so that the full packet is captured; this is the default.
 
 This option can occur multiple times.  If used before the first
 occurrence of the B<-i> option, it sets the default snapshot length.

doc/wireshark.pod.template

@@ -556,7 +556,7 @@ capture file; packets not matching the filter are discarded.
 Set the default snapshot length to use when capturing live data.
 No more than I<snaplen> bytes of each network packet will be read into
 memory, or saved to disk.  A value of 0 specifies a snapshot length of
-65535, so that the full packet is captured; this is the default.
+262144, so that the full packet is captured; this is the default.
 
 This option can occur multiple times.  If used before the first
 occurrence of the B<-i> option, it sets the default snapshot length.
@@ -2432,7 +2432,7 @@ capturing.
 
 The I<Limit each packet to ... bytes> check box and field lets you
 specify a maximum number of bytes per packet to capture and save; if the
-check box is not checked, the limit will be 65535 bytes.
+check box is not checked, the limit will be 262144 bytes.
 
 The I<Capture Filter:> entry lets you specify the capture filter using a
 tcpdump-style filter string as described above.

docbook/wsug_src/WSUG_app_tools.asciidoc

@@ -37,7 +37,7 @@ Usage: tshark [options] ...
 Capture interface:
   -i <interface>           name or idx of interface (def: first non-loopback)
   -f <capture filter>      packet filter in libpcap filter syntax
-  -s <snaplen>             packet snapshot length (def: 65535)
+  -s <snaplen>             packet snapshot length (def: 262144)
   -p                       don't capture in promiscuous mode
   -I                       capture in monitor mode, if available
   -B <buffer size>         size of kernel buffer (def: 2MB)
@@ -180,7 +180,7 @@ Capture interface:
                                rpcap://<host>/<interface>
                                TCP@<host>:<port>
   -f <capture filter>      packet filter in libpcap filter syntax
-  -s <snaplen>             packet snapshot length (def: 65535)
+  -s <snaplen>             packet snapshot length (def: 262144)
   -p                       don't capture in promiscuous mode
   -I                       capture in monitor mode, if available
   -B <buffer size>         size of kernel buffer in MiB (def: 2MiB)
@@ -868,7 +868,7 @@ Output:
                          hex dump of an encapsulated packet and you wish to
                          specify the exact type of encapsulation.
                          Example: -l 7 for ARCNet packets.
-  -m <max-packet>        max packet length in output; default is 65535
+  -m <max-packet>        max packet length in output; default is 262144
 
 Prepend dummy header:
   -e <l3pid>             prepend dummy Ethernet II header with specified L3PID

docbook/wsug_src/WSUG_chapter_capture.asciidoc

@@ -199,7 +199,7 @@ Loopback interfaces are not available on Windows platforms.
 * The information whether promicuous mode is enabled or disabled.
 
 * The maximum amount of data that will be captured for each packet. The default
-  value is set to the 65535 bytes.
+  value is set to the 262144 bytes.
 
 * The size of the kernel buffer that is reserved to keep the captured packets.
 

docbook/wsug_src/WSUG_chapter_customize.asciidoc

@@ -48,7 +48,7 @@ Capture interface:
   -i <interface>           name or idx of interface (def: first non-loopback)
   -f <capfilter|predef:>   packet filter in libpcap filter syntax or
                            predef:filtername - predefined filtername from GUI
-  -s <snaplen>             packet snapshot length (def: 65535)
+  -s <snaplen>             packet snapshot length (def: 262144)
   -p                       don't capture in promiscuous mode
   -k                       start capturing immediately (def: do nothing)
   -S                       update packet display when new packets are captured

dumpcap.c

@@ -477,7 +477,7 @@ print_usage(FILE *output)
                     "                               rpcap://<host>/<interface>\n"
                     "                               TCP@<host>:<port>\n");
     fprintf(output, "  -f <capture filter>      packet filter in libpcap filter syntax\n");
-    fprintf(output, "  -s <snaplen>             packet snapshot length (def: 65535)\n");
+    fprintf(output, "  -s <snaplen>             packet snapshot length (def: %u)\n", WTAP_MAX_PACKET_SIZE);
     fprintf(output, "  -p                       don't capture in promiscuous mode\n");
 #ifdef HAVE_PCAP_CREATE
     fprintf(output, "  -I                       capture in monitor mode, if available\n");

tshark.c

@@ -324,7 +324,7 @@ print_usage(FILE *output)
   fprintf(output, "Capture interface:\n");
   fprintf(output, "  -i <interface>           name or idx of interface (def: first non-loopback)\n");
   fprintf(output, "  -f <capture filter>      packet filter in libpcap filter syntax\n");
-  fprintf(output, "  -s <snaplen>             packet snapshot length (def: 65535)\n");
+  fprintf(output, "  -s <snaplen>             packet snapshot length (def: %u)\n", WTAP_MAX_PACKET_SIZE);
   fprintf(output, "  -p                       don't capture in promiscuous mode\n");
 #ifdef HAVE_PCAP_CREATE
   fprintf(output, "  -I                       capture in monitor mode, if available\n");

ui/commandline.c

@@ -93,7 +93,7 @@ commandline_print_usage(gboolean for_help_option) {
     fprintf(output, "Capture interface:\n");
     fprintf(output, "  -i <interface>           name or idx of interface (def: first non-loopback)\n");
     fprintf(output, "  -f <capture filter>      packet filter in libpcap filter syntax\n");
-    fprintf(output, "  -s <snaplen>             packet snapshot length (def: 65535)\n");
+    fprintf(output, "  -s <snaplen>             packet snapshot length (def: %u)\n", WTAP_MAX_PACKET_SIZE);
     fprintf(output, "  -p                       don't capture in promiscuous mode\n");
     fprintf(output, "  -k                       start capturing immediately (def: do nothing)\n");
     fprintf(output, "  -S                       update packet display when new packets are captured\n");