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Local changes: - In contrib/libpcap/pcap/bpf.h, do not include pcap/dlt.h. Our system net/dlt.h is pulled in from net/bpf.h. - sys/net/dlt.h: Incorporate changes from libpcap 1.10.3. - lib/libpcap/Makefile: Update for libpcap 1.10.3. Changelog: https://git.tcpdump.org/libpcap/blob/95691ebe7564afa3faa5c6ba0dbd17e351be455a:/CHANGES Reviewed by: emaste Obtained from: https://www.tcpdump.org/release/libpcap-1.10.3.tar.gz Sponsored by: The FreeBSD Foundation
77 lines
2.8 KiB
Plaintext
77 lines
2.8 KiB
Plaintext
.\" Copyright (c) 1994, 1996, 1997
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that: (1) source code distributions
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.\" retain the above copyright notice and this paragraph in its entirety, (2)
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.\" distributions including binary code include the above copyright notice and
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.\" this paragraph in its entirety in the documentation or other materials
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.\" provided with the distribution, and (3) all advertising materials mentioning
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.\" features or use of this software display the following acknowledgement:
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.\" ``This product includes software developed by the University of California,
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.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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.\" the University nor the names of its contributors may be used to endorse
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.\" or promote products derived from this software without specific prior
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.\" written permission.
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.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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.\"
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.TH PCAP_DATALINK_VAL_TO_NAME 3PCAP "4 May 2022"
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.SH NAME
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pcap_datalink_val_to_name, pcap_datalink_val_to_description,
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pcap_datalink_val_to_description_or_dlt \- get a
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name or description for a link-layer header type value
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.SH SYNOPSIS
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.nf
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.ft B
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#include <pcap.h>
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.ft
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.LP
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.ft B
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const char *pcap_datalink_val_to_name(int dlt);
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const char *pcap_datalink_val_to_description(int dlt);
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const char *pcap_datalink_val_to_description_or_dlt(int dlt);
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.ft
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.fi
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.SH DESCRIPTION
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.BR pcap_datalink_val_to_name ()
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translates a link-layer header type value to the corresponding
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link-layer header type name, which is the
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.B DLT_
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name for the link-layer header type value with the
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.B DLT_
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removed.
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.B NULL
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is returned if the type value does not correspond to a known
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.B DLT_
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value.
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.PP
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.BR pcap_datalink_val_to_description ()
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translates a link-layer header type value to a short description of that
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link-layer header type.
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.B NULL
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is returned if the type value does not correspond to a known
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.B DLT_
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value.
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.PP
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.BR pcap_datalink_val_to_description_or_dlt ()
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translates a link-layer header type value to a short description of that
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link-layer header type just like
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.BR pcap_datalink_val_to_description ().
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If the type value does not correspond to a known
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.B DLT_
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value, the string "DLT n" is returned, where n is the value of
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the dlt argument.
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.SH BACKWARD COMPATIBILITY
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The
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.BR pcap_datalink_val_to_description_or_dlt ()
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function first became available in libpcap release 1.9.1. In previous
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releases,
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.BR pcap_datalink_val_to_description ()
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would have to be called and, if it returned
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.BR NULL ,
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a default string would have to be constructed.
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.SH SEE ALSO
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.BR pcap (3PCAP)
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