1/*-
2 * Copyright (c) 2010-2011 Monthadar Al Jaberi, TerraNet AB
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer,
10 *    without modification.
11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13 *    redistribution must be conditioned upon including a substantially
14 *    similar Disclaimer requirement for further binary redistribution.
15 *
16 * NO WARRANTY
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27 * THE POSSIBILITY OF SUCH DAMAGES.
28 *
29 * $FreeBSD$
30 */
31#include "hal.h"
32#include "../if_medium.h"
33#include "handler.h"
34
35static void
36hal_tx_proc(void *arg, int npending)
37{
38	struct wtap_hal *hal = (struct wtap_hal *)arg;
39	struct packet *p;
40
41#if 0
42	DWTAP_PRINTF("%s\n", __func__);
43#endif
44
45	hal = (struct wtap_hal *)arg;
46	for(;;){
47		p = medium_get_next_packet(hal->hal_md);
48		if(p == NULL)
49		return;
50
51		hal->plugin->work(hal->plugin, p);
52
53#if 0
54		DWTAP_PRINTF("[%d] freeing m=%p\n", p->id, p->m);
55#endif
56		m_free(p->m);
57		free(p, M_WTAP_PACKET);
58	}
59}
60
61void
62init_hal(struct wtap_hal *hal)
63{
64
65	DWTAP_PRINTF("%s\n", __func__);
66	mtx_init(&hal->hal_mtx, "wtap_hal mtx", NULL, MTX_DEF | MTX_RECURSE);
67
68	hal->hal_md = (struct wtap_medium *)malloc(sizeof(struct wtap_medium),
69	    M_WTAP, M_NOWAIT | M_ZERO);
70	bzero(hal->hal_md, sizeof(struct wtap_medium));
71
72	init_medium(hal->hal_md);
73	/* register event handler for packets */
74	TASK_INIT(&hal->hal_md->tx_handler->proc, 0, hal_tx_proc, hal);
75}
76
77void
78register_plugin(struct wtap_hal *hal, struct wtap_plugin *plugin)
79{
80
81	plugin->init(plugin);
82	hal->plugin = plugin;
83}
84
85void
86deregister_plugin(struct wtap_hal *hal)
87{
88
89	hal->plugin->deinit(hal->plugin);
90	hal->plugin = NULL; /* catch illegal usages */
91}
92
93void
94deinit_hal(struct wtap_hal *hal)
95{
96
97	DWTAP_PRINTF("%s\n", __func__);
98	deinit_medium(hal->hal_md);
99	free(hal->hal_md, M_WTAP);
100	mtx_destroy(&hal->hal_mtx);
101}
102
103int32_t
104new_wtap(struct wtap_hal *hal, int32_t id)
105{
106	static const uint8_t mac_pool[64][IEEE80211_ADDR_LEN] = {
107	    {0,152,154,152,150,151},
108	    {0,152,154,152,150,152},
109	    {0,152,154,152,150,153},
110	    {0,152,154,152,150,154},
111	    {0,152,154,152,150,155},
112	    {0,152,154,152,150,156},
113	    {0,152,154,152,150,157},
114	    {0,152,154,152,150,158},
115	    {0,152,154,152,151,151},
116	    {0,152,154,152,151,152},
117	    {0,152,154,152,151,153},
118	    {0,152,154,152,151,154},
119	    {0,152,154,152,151,155},
120	    {0,152,154,152,151,156},
121	    {0,152,154,152,151,157},
122	    {0,152,154,152,151,158},
123	    {0,152,154,152,152,151},
124	    {0,152,154,152,152,152},
125	    {0,152,154,152,152,153},
126	    {0,152,154,152,152,154},
127	    {0,152,154,152,152,155},
128	    {0,152,154,152,152,156},
129	    {0,152,154,152,152,157},
130	    {0,152,154,152,152,158},
131	    {0,152,154,152,153,151},
132	    {0,152,154,152,153,152},
133	    {0,152,154,152,153,153},
134	    {0,152,154,152,153,154},
135	    {0,152,154,152,153,155},
136	    {0,152,154,152,153,156},
137	    {0,152,154,152,153,157},
138	    {0,152,154,152,153,158},
139	    {0,152,154,152,154,151},
140	    {0,152,154,152,154,152},
141	    {0,152,154,152,154,153},
142	    {0,152,154,152,154,154},
143	    {0,152,154,152,154,155},
144	    {0,152,154,152,154,156},
145	    {0,152,154,152,154,157},
146	    {0,152,154,152,154,158},
147	    {0,152,154,152,155,151},
148	    {0,152,154,152,155,152},
149	    {0,152,154,152,155,153},
150	    {0,152,154,152,155,154},
151	    {0,152,154,152,155,155},
152	    {0,152,154,152,155,156},
153	    {0,152,154,152,155,157},
154	    {0,152,154,152,155,158},
155	    {0,152,154,152,156,151},
156	    {0,152,154,152,156,152},
157	    {0,152,154,152,156,153},
158	    {0,152,154,152,156,154},
159	    {0,152,154,152,156,155},
160	    {0,152,154,152,156,156},
161	    {0,152,154,152,156,157},
162	    {0,152,154,152,156,158},
163	    {0,152,154,152,157,151},
164	    {0,152,154,152,157,152},
165	    {0,152,154,152,157,153},
166	    {0,152,154,152,157,154},
167	    {0,152,154,152,157,155},
168	    {0,152,154,152,157,156},
169	    {0,152,154,152,157,157},
170	    {0,152,154,152,157,158}
171	    };
172
173	DWTAP_PRINTF("%s\n", __func__);
174	uint8_t const *macaddr = mac_pool[id];
175	if(hal->hal_devs[id] != NULL){
176		printf("error, wtap_id=%d already created\n", id);
177		return -1;
178	}
179
180	hal->hal_devs[id] = (struct wtap_softc *)malloc(
181	    sizeof(struct wtap_softc), M_WTAP, M_NOWAIT | M_ZERO);
182	bzero(hal->hal_devs[id], sizeof(struct wtap_softc));
183	hal->hal_devs[id]->sc_md = hal->hal_md;
184	hal->hal_devs[id]->id = id;
185	mtx_init(&hal->hal_devs[id]->sc_mtx, "wtap_softc mtx", NULL,
186	    MTX_DEF | MTX_RECURSE);
187
188	if(wtap_attach(hal->hal_devs[id], macaddr)){
189		printf("%s, cant alloc new wtap\n", __func__);
190		return -1;
191	}
192
193	return 0;
194}
195
196int32_t
197free_wtap(struct wtap_hal *hal, int32_t id)
198{
199
200	DWTAP_PRINTF("%s\n", __func__);
201	if(hal->hal_devs[id] == NULL){
202		printf("error, wtap_id=%d never created\n", id);
203		return -1;
204	}
205
206	if(wtap_detach(hal->hal_devs[id]))
207		printf("%s, cant alloc new wtap\n", __func__);
208	mtx_destroy(&hal->hal_devs[id]->sc_mtx);
209	free(hal->hal_devs[id], M_WTAP);
210	hal->hal_devs[id] = NULL;
211	return 0;
212}
213
214