Consistently use "link-layer header type".

Use "link-layer header type" as the term for DLT_ values; it doesn't
necessarily correspond to the actual data link type of the device
(802.11 devices, for example, can supply Ethernet headers).

pcap_datalink.3pcap.in

@@ -19,7 +19,7 @@
 .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 .\"
-.TH PCAP_DATALINK 3PCAP "5 April 2008"
+.TH PCAP_DATALINK 3PCAP "22 August 2010"
 .SH NAME
 pcap_datalink \- get the link-layer header type
 .SH SYNOPSIS
@@ -34,7 +34,7 @@ int pcap_datalink(pcap_t *p);
 .fi
 .SH DESCRIPTION
 .B pcap_datalink()
-returns the link layer type for the live capture or ``savefile''
+returns the link-layer header type for the live capture or ``savefile''
 specified by
 .IR p .
 .SH SEE ALSO

pcap_datalink_name_to_val.3pcap

@@ -19,7 +19,7 @@
 .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 .\"
-.TH PCAP_DATALINK_NAME_TO_VAL 3PCAP "5 April 2008"
+.TH PCAP_DATALINK_NAME_TO_VAL 3PCAP "22 August 2010"
 .SH NAME
 pcap_datalink_name_to_val \- get the link-layer header type value
 corresponding to a header type name
@@ -35,12 +35,12 @@ int pcap_datalink_name_to_val(const char *name);
 .fi
 .SH DESCRIPTION
 .B pcap_datalink_name_to_val()
-translates a data link type name, which is a
+translates a link-layer header type name, which is a
 .B DLT_
 name with the
 .B DLT_
-removed, to the corresponding data link type value.  The translation
-is case-insensitive.
+removed, to the corresponding link-layer header type value.  The
+translation is case-insensitive.
 .SH RETURN VALUE
 .B pcap_datalink_name_to_val()
 returns 0 on success and \-1 on failure.

pcap_datalink_val_to_name.3pcap

@@ -19,7 +19,7 @@
 .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 .\"
-.TH PCAP_DATALINK_VAL_TO_NAME 3PCAP "24 December 2008"
+.TH PCAP_DATALINK_VAL_TO_NAME 3PCAP "22 August 2010"
 .SH NAME
 pcap_datalink_val_to_name, pcap_datalink_val_to_description \- get a
 name or description for a link-layer header type value
@@ -36,9 +36,9 @@ const char *pcap_datalink_val_to_description(int dlt);
 .fi
 .SH DESCRIPTION
 .B pcap_datalink_val_to_name()
-translates a data link type value to the corresponding data link type
-name.  NULL is returned on failure.
+translates a link-layer header type value to the corresponding
+link-layer header type name.  NULL is returned on failure.
 .PP
 .B pcap_datalink_val_to_description()
-translates a data link type value to a short description of that data
-link type.  NULL is returned on failure.
+translates a link-layer header type value to a short description of that
+link-layer header type.  NULL is returned on failure.

pcap_list_datalinks.3pcap.in

@@ -36,8 +36,8 @@ void pcap_free_datalinks(int *dlt_list);
 .fi
 .SH DESCRIPTION
 .B pcap_list_datalinks()
-is used to get a list of the supported data link types of the interface
-associated with the pcap descriptor.
+is used to get a list of the supported link-layer header types of the
+interface associated with the pcap descriptor.
 .B pcap_list_datalinks()
 allocates an array to hold the list and sets
 .IR *dlt_buf 
@@ -45,12 +45,12 @@ to point to that array.
 .LP
 The caller is responsible for freeing the array with
 .BR pcap_free_datalinks() ,
-which frees the list of data links pointed to by
+which frees the list of link-layer header types pointed to by
 .IR dlt_list .
 .SH RETURN VALUE
 .B pcap_list_datalinks()
-returns the number of data link types in the array on success and \-1
-on failure.
+returns the number of link-layer header types in the array on success
+and \-1 on failure.
 If \-1 is returned,
 .B pcap_geterr()
 or

pcap_set_datalink.3pcap

@@ -35,7 +35,7 @@ int pcap_set_datalink(pcap_t *p, int dlt);
 .fi
 .SH DESCRIPTION
 .B pcap_set_datalink()
-is used to set the current data link type of the pcap descriptor
+is used to set the current link-layer header type of the pcap descriptor
 to the type specified by
 .IR dlt .
 .SH RETURN VALUE