/* Copyright (C) 2025 Open Information Security Foundation

 *

 * You can copy, redistribute or modify this Program under the terms of

 * the GNU General Public License version 2 as published by the Free

 * Software Foundation.

 *

 * 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

 * version 2 along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

 * 02110-1301, USA.

 */

/**

 * \ingroup decode

 *

 * @{

 */

/**

 * \file

 *

 * \author Jeff Lucovsky <jeff.lucovsky@corelight.com>

 *

 * Decodes Sll2

 */

#include "suricata-common.h"

#include "decode.h"

#include "decode-sll2.h"

#include "decode-events.h"

#include "util-validate.h"

#include "util-debug.h"

int DecodeSll2(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p, const uint8_t *pkt, uint32_t len)

{

    DEBUG_VALIDATE_BUG_ON(pkt == NULL);

    StatsIncr(tv, dtv->counter_sll2);

    if (unlikely(len < SLL2_HEADER_LEN)) {

        ENGINE_SET_INVALID_EVENT(p, SLL2_PKT_TOO_SMALL);

        return TM_ECODE_FAILED;

    }

    if (!PacketIncreaseCheckLayers(p)) {

        return TM_ECODE_FAILED;

    }

    Sll2Hdr *sll2h = (Sll2Hdr *)pkt;

    SCLogDebug("p %p pkt %p sll2_protocol %04x", p, pkt, SCNtohs(sll2h->sll_protocol));

    DecodeNetworkLayer(

            tv, dtv, SCNtohs(sll2h->sll_protocol), p, pkt + SLL2_HEADER_LEN, len - SLL2_HEADER_LEN);

    return TM_ECODE_OK;

}

/**

 * @}

 */