1 /*	$OpenBSD: if_iwm.c,v 1.39 2015/03/23 00:35:19 jsg Exp $	*/
2 
3 /*
4  * Copyright (c) 2014 genua mbh <info@genua.de>
5  * Copyright (c) 2014 Fixup Software Ltd.
6  *
7  * Permission to use, copy, modify, and distribute this software for any
8  * purpose with or without fee is hereby granted, provided that the above
9  * copyright notice and this permission notice appear in all copies.
10  *
11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18  */
19 
20 /*-
21  * Based on BSD-licensed source modules in the Linux iwlwifi driver,
22  * which were used as the reference documentation for this implementation.
23  *
24  * Driver version we are currently based off of is
25  * Linux 3.14.3 (tag id a2df521e42b1d9a23f620ac79dbfe8655a8391dd)
26  *
27  ***********************************************************************
28  *
29  * This file is provided under a dual BSD/GPLv2 license.  When using or
30  * redistributing this file, you may do so under either license.
31  *
32  * GPL LICENSE SUMMARY
33  *
34  * Copyright(c) 2007 - 2013 Intel Corporation. All rights reserved.
35  *
36  * This program is free software; you can redistribute it and/or modify
37  * it under the terms of version 2 of the GNU General Public License as
38  * published by the Free Software Foundation.
39  *
40  * This program is distributed in the hope that it will be useful, but
41  * WITHOUT ANY WARRANTY; without even the implied warranty of
42  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
43  * General Public License for more details.
44  *
45  * You should have received a copy of the GNU General Public License
46  * along with this program; if not, write to the Free Software
47  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
48  * USA
49  *
50  * The full GNU General Public License is included in this distribution
51  * in the file called COPYING.
52  *
53  * Contact Information:
54  *  Intel Linux Wireless <ilw@linux.intel.com>
55  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
56  *
57  *
58  * BSD LICENSE
59  *
60  * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
61  * All rights reserved.
62  *
63  * Redistribution and use in source and binary forms, with or without
64  * modification, are permitted provided that the following conditions
65  * are met:
66  *
67  *  * Redistributions of source code must retain the above copyright
68  *    notice, this list of conditions and the following disclaimer.
69  *  * Redistributions in binary form must reproduce the above copyright
70  *    notice, this list of conditions and the following disclaimer in
71  *    the documentation and/or other materials provided with the
72  *    distribution.
73  *  * Neither the name Intel Corporation nor the names of its
74  *    contributors may be used to endorse or promote products derived
75  *    from this software without specific prior written permission.
76  *
77  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
78  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
79  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
80  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
81  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
82  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
83  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
84  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
85  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
86  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
87  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
88  */
89 
90 /*-
91  * Copyright (c) 2007-2010 Damien Bergamini <damien.bergamini@free.fr>
92  *
93  * Permission to use, copy, modify, and distribute this software for any
94  * purpose with or without fee is hereby granted, provided that the above
95  * copyright notice and this permission notice appear in all copies.
96  *
97  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
98  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
99  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
100  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
101  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
102  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
103  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
104  */
105 #include <sys/cdefs.h>
106 __FBSDID("$FreeBSD$");
107 
108 #include <sys/param.h>
109 #include <sys/bus.h>
110 #include <sys/endian.h>
111 #include <sys/firmware.h>
112 #include <sys/kernel.h>
113 #include <sys/malloc.h>
114 #include <sys/mbuf.h>
115 #include <sys/rman.h>
116 #include <sys/sysctl.h>
117 #include <sys/linker.h>
118 
119 #include <machine/endian.h>
120 
121 #include <bus/pci/pcivar.h>
122 #include <bus/pci/pcireg.h>
123 
124 #include <net/bpf.h>
125 
126 #include <net/if.h>
127 #include <net/if_var.h>
128 #include <net/if_arp.h>
129 #include <net/if_dl.h>
130 #include <net/if_media.h>
131 #include <net/if_types.h>
132 
133 #include <netinet/in.h>
134 #include <netinet/in_systm.h>
135 #include <netinet/if_ether.h>
136 #include <netinet/ip.h>
137 
138 #include <netproto/802_11/ieee80211_var.h>
139 #include <netproto/802_11/ieee80211_regdomain.h>
140 #include <netproto/802_11/ieee80211_ratectl.h>
141 #include <netproto/802_11/ieee80211_radiotap.h>
142 
143 #include "if_iwmreg.h"
144 #include "if_iwmvar.h"
145 #include "if_iwm_debug.h"
146 #include "if_iwm_util.h"
147 #include "if_iwm_pcie_trans.h"
148 #include "if_iwm_time_event.h"
149 
150 /*
151  * For the high priority TE use a time event type that has similar priority to
152  * the FW's action scan priority.
153  */
154 #define IWM_MVM_ROC_TE_TYPE_NORMAL IWM_TE_P2P_DEVICE_DISCOVERABLE
155 #define IWM_MVM_ROC_TE_TYPE_MGMT_TX IWM_TE_P2P_CLIENT_ASSOC
156 
157 static int
158 iwm_mvm_time_event_send_add(struct iwm_softc *sc, struct iwm_vap *ivp,
159 	void *te_data, struct iwm_time_event_cmd *te_cmd)
160 {
161 	int ret;
162 
163 	IWM_DPRINTF(sc, IWM_DEBUG_CMD | IWM_DEBUG_RESET,
164 	    "Add new TE, duration %d TU\n", le32toh(te_cmd->duration));
165 
166 	ret = iwm_mvm_send_cmd_pdu(sc, IWM_TIME_EVENT_CMD, IWM_CMD_SYNC,
167 	    sizeof(*te_cmd), te_cmd);
168 	if (ret) {
169 		IWM_DPRINTF(sc, IWM_DEBUG_CMD | IWM_DEBUG_RESET,
170 		    "%s: Couldn't send IWM_TIME_EVENT_CMD: %d\n",
171 		    __func__, ret);
172 	}
173 
174 	return ret;
175 }
176 
177 void
178 iwm_mvm_protect_session(struct iwm_softc *sc, struct iwm_vap *ivp,
179 	uint32_t duration, uint32_t max_delay)
180 {
181 	struct iwm_time_event_cmd time_cmd = {};
182 
183 	time_cmd.action = htole32(IWM_FW_CTXT_ACTION_ADD);
184 	time_cmd.id_and_color =
185 	    htole32(IWM_FW_CMD_ID_AND_COLOR(ivp->id, ivp->color));
186 	time_cmd.id = htole32(IWM_TE_BSS_STA_AGGRESSIVE_ASSOC);
187 
188 	time_cmd.apply_time = htole32(0);
189 
190 	time_cmd.max_frags = IWM_TE_V2_FRAG_NONE;
191 	time_cmd.max_delay = htole32(max_delay);
192 	/* TODO: why do we need to interval = bi if it is not periodic? */
193 	time_cmd.interval = htole32(1);
194 	time_cmd.duration = htole32(duration);
195 	time_cmd.repeat = 1;
196 	time_cmd.policy = htole16(IWM_TE_V2_NOTIF_HOST_EVENT_START |
197 				  IWM_TE_V2_NOTIF_HOST_EVENT_END |
198 				  IWM_T2_V2_START_IMMEDIATELY);
199 
200 	iwm_mvm_time_event_send_add(sc, ivp, /*te_data*/NULL, &time_cmd);
201 }
202