text: /*-
   * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   *
   * Copyright (c) 2010-2011 Monthadar Al Jaberi, TerraNet AB
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer,
   *    without modification.
   * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
   *    redistribution must be conditioned upon including a substantially
   *    similar Disclaimer requirement for further binary redistribution.
   *
   * NO WARRANTY
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
   * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
   * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
   * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
   * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   * THE POSSIBILITY OF SUCH DAMAGES.
   *
   * $FreeBSD$
   */
  #include "hal.h"
  #include "../if_medium.h"
  #include "handler.h"
  
  static void
  hal_tx_proc(void *arg, int npending)
  {
  	struct wtap_hal *hal = (struct wtap_hal *)arg;
  	struct packet *p;
  
  #if 0
  	DWTAP_PRINTF("%s\n", __func__);
  #endif
  
  	hal = (struct wtap_hal *)arg;
  	for(;;){
  		p = medium_get_next_packet(hal->hal_md);
  		if(p == NULL)
  		return;
  
  		hal->plugin->work(hal->plugin, p);
  
  #if 0
  		DWTAP_PRINTF("[%d] freeing m=%p\n", p->id, p->m);
  #endif
  		m_free(p->m);
  		free(p, M_WTAP_PACKET);
  	}
  }
  
  void
  init_hal(struct wtap_hal *hal)
  {
  
  	DWTAP_PRINTF("%s\n", __func__);
  	mtx_init(&hal->hal_mtx, "wtap_hal mtx", NULL, MTX_DEF | MTX_RECURSE);
  
  	hal->hal_md = (struct wtap_medium *)malloc(sizeof(struct wtap_medium),
  	    M_WTAP, M_NOWAIT | M_ZERO);
  	bzero(hal->hal_md, sizeof(struct wtap_medium));
  
  	init_medium(hal->hal_md);
  	/* register event handler for packets */
  	TASK_INIT(&hal->hal_md->tx_handler->proc, 0, hal_tx_proc, hal);
  }
  
  void
  register_plugin(struct wtap_hal *hal, struct wtap_plugin *plugin)
  {
  
  	plugin->init(plugin);
  	hal->plugin = plugin;
  }
  
  void
  deregister_plugin(struct wtap_hal *hal)
  {
  
  	hal->plugin->deinit(hal->plugin);
  	hal->plugin = NULL; /* catch illegal usages */
  }
  
  void
  deinit_hal(struct wtap_hal *hal)
  {
  
  	DWTAP_PRINTF("%s\n", __func__);
  	deinit_medium(hal->hal_md);
  	free(hal->hal_md, M_WTAP);
  	mtx_destroy(&hal->hal_mtx);
  }
  
  int32_t
  new_wtap(struct wtap_hal *hal, int32_t id)
  {
  	static const uint8_t mac_pool[64][IEEE80211_ADDR_LEN] = {
  	    {0,152,154,152,150,151},
  	    {0,152,154,152,150,152},
  	    {0,152,154,152,150,153},
  	    {0,152,154,152,150,154},
  	    {0,152,154,152,150,155},
  	    {0,152,154,152,150,156},
  	    {0,152,154,152,150,157},
  	    {0,152,154,152,150,158},
  	    {0,152,154,152,151,151},
  	    {0,152,154,152,151,152},
  	    {0,152,154,152,151,153},
  	    {0,152,154,152,151,154},
  	    {0,152,154,152,151,155},
  	    {0,152,154,152,151,156},
  	    {0,152,154,152,151,157},
  	    {0,152,154,152,151,158},
  	    {0,152,154,152,152,151},
  	    {0,152,154,152,152,152},
  	    {0,152,154,152,152,153},
  	    {0,152,154,152,152,154},
  	    {0,152,154,152,152,155},
  	    {0,152,154,152,152,156},
  	    {0,152,154,152,152,157},
  	    {0,152,154,152,152,158},
  	    {0,152,154,152,153,151},
  	    {0,152,154,152,153,152},
  	    {0,152,154,152,153,153},
  	    {0,152,154,152,153,154},
  	    {0,152,154,152,153,155},
  	    {0,152,154,152,153,156},
  	    {0,152,154,152,153,157},
  	    {0,152,154,152,153,158},
  	    {0,152,154,152,154,151},
  	    {0,152,154,152,154,152},
  	    {0,152,154,152,154,153},
  	    {0,152,154,152,154,154},
  	    {0,152,154,152,154,155},
  	    {0,152,154,152,154,156},
  	    {0,152,154,152,154,157},
  	    {0,152,154,152,154,158},
  	    {0,152,154,152,155,151},
  	    {0,152,154,152,155,152},
  	    {0,152,154,152,155,153},
  	    {0,152,154,152,155,154},
  	    {0,152,154,152,155,155},
  	    {0,152,154,152,155,156},
  	    {0,152,154,152,155,157},
  	    {0,152,154,152,155,158},
  	    {0,152,154,152,156,151},
  	    {0,152,154,152,156,152},
  	    {0,152,154,152,156,153},
  	    {0,152,154,152,156,154},
  	    {0,152,154,152,156,155},
  	    {0,152,154,152,156,156},
  	    {0,152,154,152,156,157},
  	    {0,152,154,152,156,158},
  	    {0,152,154,152,157,151},
  	    {0,152,154,152,157,152},
  	    {0,152,154,152,157,153},
  	    {0,152,154,152,157,154},
  	    {0,152,154,152,157,155},
  	    {0,152,154,152,157,156},
  	    {0,152,154,152,157,157},
  	    {0,152,154,152,157,158}
  	    };
  
  	DWTAP_PRINTF("%s\n", __func__);
  	uint8_t const *macaddr = mac_pool[id];
  	if(hal->hal_devs[id] != NULL){
  		printf("error, wtap_id=%d already created\n", id);
  		return -1;
  	}
  
  	hal->hal_devs[id] = (struct wtap_softc *)malloc(
  	    sizeof(struct wtap_softc), M_WTAP, M_NOWAIT | M_ZERO);
  	bzero(hal->hal_devs[id], sizeof(struct wtap_softc));
  	hal->hal_devs[id]->sc_md = hal->hal_md;
  	hal->hal_devs[id]->id = id;
  	snprintf(hal->hal_devs[id]->name, sizeof(hal->hal_devs[id]->name),
  	    "wlan%d", id);
  	mtx_init(&hal->hal_devs[id]->sc_mtx, "wtap_softc mtx", NULL,
  	    MTX_DEF | MTX_RECURSE);
  
  	if(wtap_attach(hal->hal_devs[id], macaddr)){
  		printf("%s, cant alloc new wtap\n", __func__);
  		return -1;
  	}
  
  	return 0;
  }
  
  int32_t
  free_wtap(struct wtap_hal *hal, int32_t id)
  {
  
  	DWTAP_PRINTF("%s\n", __func__);
  	if(hal->hal_devs[id] == NULL){
  		printf("error, wtap_id=%d never created\n", id);
  		return -1;
  	}
  
  	if(wtap_detach(hal->hal_devs[id]))
  		printf("%s, cant alloc new wtap\n", __func__);
  	mtx_destroy(&hal->hal_devs[id]->sc_mtx);
  	free(hal->hal_devs[id], M_WTAP);
  	hal->hal_devs[id] = NULL;
  	return 0;
  }
  
  