diff options
author | Guy Harris <guy@alum.mit.edu> | 2014-08-08 13:02:46 -0700 |
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committer | Guy Harris <guy@alum.mit.edu> | 2014-08-08 20:03:29 +0000 |
commit | bbdd34a06b4ca9b4c8fea413ffb283f305881025 (patch) | |
tree | 5dd8e9d8cf5650129f5f0c6bd5224fdc27236da5 /epan/crc6-tvb.c | |
parent | 479e2881f85d835982292d3b4a5dd9c144eecc7a (diff) |
Add a tvbuff version of crc6_compute().
Use it in the MBMS synchronisation protocol dissector, rather than
calling tvb_get_ptr() there.
Change-Id: I7ddb3c6b30547826cb5372352c7c483d8a24dc8e
Reviewed-on: https://code.wireshark.org/review/3514
Reviewed-by: Guy Harris <guy@alum.mit.edu>
Diffstat (limited to 'epan/crc6-tvb.c')
-rw-r--r-- | epan/crc6-tvb.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/epan/crc6-tvb.c b/epan/crc6-tvb.c new file mode 100644 index 0000000000..c9a2e4470d --- /dev/null +++ b/epan/crc6-tvb.c @@ -0,0 +1,39 @@ +/* crc6-tvb.c + * CRC-6 tvb routines + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" + +#include <glib.h> +#include <epan/tvbuff.h> +#include <wsutil/crc6.h> +#include <epan/crc6-tvb.h> + +guint16 +crc6_compute_tvb(tvbuff_t *tvb, int len) +{ + const guint8 *buf; + + tvb_ensure_bytes_exist(tvb, 0, len); /* len == -1 not allowed */ + buf = tvb_get_ptr(tvb, 0, len); + + return crc6_compute(buf, len); +} |