110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
/* librfid - layer 2 protocol handler
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* (C) 2005 by Harald Welte <laforge@gnumonks.org>
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <librfid/rfid.h>
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#include <librfid/rfid_layer2.h>
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static struct rfid_layer2 *rfid_layer2_list;
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struct rfid_layer2_handle *
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rfid_layer2_init(struct rfid_reader_handle *rh, unsigned int id)
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{
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struct rfid_layer2 *p;
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for (p = rfid_layer2_list; p; p = p->next)
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if (p->id == id)
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return p->fn.init(rh);
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DEBUGP("unable to find matching layer2 protocol\n");
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return NULL;
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}
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int
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rfid_layer2_open(struct rfid_layer2_handle *ph)
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{
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if (!ph->l2->fn.open)
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return 0;
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return ph->l2->fn.open(ph);
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}
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int
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rfid_layer2_transcieve(struct rfid_layer2_handle *ph,
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enum rfid_frametype frametype,
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const unsigned char *tx_buf, unsigned int len,
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unsigned char *rx_buf, unsigned int *rx_len,
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u_int64_t timeout, unsigned int flags)
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{
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if (!ph->l2->fn.transcieve)
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return -EIO;
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return ph->l2->fn.transcieve(ph, frametype, tx_buf, len, rx_buf,
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rx_len, timeout, flags);
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}
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int rfid_layer2_fini(struct rfid_layer2_handle *ph)
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{
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if (!ph->l2->fn.fini)
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return 0;
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return ph->l2->fn.fini(ph);
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}
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int
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rfid_layer2_close(struct rfid_layer2_handle *ph)
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{
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if (!ph->l2->fn.close)
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return 0;
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return ph->l2->fn.close(ph);
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}
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int
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rfid_layer2_register(struct rfid_layer2 *p)
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{
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p->next = rfid_layer2_list;
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rfid_layer2_list = p;
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return 0;
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}
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int
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rfid_layer2_getopt(struct rfid_layer2_handle *ph, int optname,
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void *optval, unsigned int *optlen)
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{
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if (!ph->l2->fn.getopt)
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return -EINVAL;
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return ph->l2->fn.getopt(ph, optname, optval, optlen);
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}
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int
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rfid_layer2_setopt(struct rfid_layer2_handle *ph, int optname,
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const void *optval, unsigned int optlen)
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{
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if (!ph->l2->fn.setopt)
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return -EINVAL;
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return ph->l2->fn.setopt(ph, optname, optval, optlen);
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}
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