2 * Copyright (C) 2011 Instituto Nokia de Tecnologia
5 * Lauro Ramos Venancio <lauro.venancio@openbossa.org>
6 * Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
8 * Vendor commands implementation based on net/wireless/nl80211.c
11 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
12 * Copyright 2013-2014 Intel Mobile Communications GmbH
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, see <http://www.gnu.org/licenses/>.
28 #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
30 #include <net/genetlink.h>
31 #include <linux/nfc.h>
32 #include <linux/slab.h>
37 static const struct genl_multicast_group nfc_genl_mcgrps
[] = {
38 { .name
= NFC_GENL_MCAST_EVENT_NAME
, },
41 static struct genl_family nfc_genl_family
= {
42 .id
= GENL_ID_GENERATE
,
44 .name
= NFC_GENL_NAME
,
45 .version
= NFC_GENL_VERSION
,
46 .maxattr
= NFC_ATTR_MAX
,
49 static const struct nla_policy nfc_genl_policy
[NFC_ATTR_MAX
+ 1] = {
50 [NFC_ATTR_DEVICE_INDEX
] = { .type
= NLA_U32
},
51 [NFC_ATTR_DEVICE_NAME
] = { .type
= NLA_STRING
,
52 .len
= NFC_DEVICE_NAME_MAXSIZE
},
53 [NFC_ATTR_PROTOCOLS
] = { .type
= NLA_U32
},
54 [NFC_ATTR_COMM_MODE
] = { .type
= NLA_U8
},
55 [NFC_ATTR_RF_MODE
] = { .type
= NLA_U8
},
56 [NFC_ATTR_DEVICE_POWERED
] = { .type
= NLA_U8
},
57 [NFC_ATTR_IM_PROTOCOLS
] = { .type
= NLA_U32
},
58 [NFC_ATTR_TM_PROTOCOLS
] = { .type
= NLA_U32
},
59 [NFC_ATTR_LLC_PARAM_LTO
] = { .type
= NLA_U8
},
60 [NFC_ATTR_LLC_PARAM_RW
] = { .type
= NLA_U8
},
61 [NFC_ATTR_LLC_PARAM_MIUX
] = { .type
= NLA_U16
},
62 [NFC_ATTR_LLC_SDP
] = { .type
= NLA_NESTED
},
63 [NFC_ATTR_FIRMWARE_NAME
] = { .type
= NLA_STRING
,
64 .len
= NFC_FIRMWARE_NAME_MAXSIZE
},
65 [NFC_ATTR_SE_APDU
] = { .type
= NLA_BINARY
},
66 [NFC_ATTR_VENDOR_DATA
] = { .type
= NLA_BINARY
},
70 static const struct nla_policy nfc_sdp_genl_policy
[NFC_SDP_ATTR_MAX
+ 1] = {
71 [NFC_SDP_ATTR_URI
] = { .type
= NLA_STRING
},
72 [NFC_SDP_ATTR_SAP
] = { .type
= NLA_U8
},
75 static int nfc_genl_send_target(struct sk_buff
*msg
, struct nfc_target
*target
,
76 struct netlink_callback
*cb
, int flags
)
80 hdr
= genlmsg_put(msg
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
81 &nfc_genl_family
, flags
, NFC_CMD_GET_TARGET
);
85 genl_dump_check_consistent(cb
, hdr
, &nfc_genl_family
);
87 if (nla_put_u32(msg
, NFC_ATTR_TARGET_INDEX
, target
->idx
) ||
88 nla_put_u32(msg
, NFC_ATTR_PROTOCOLS
, target
->supported_protocols
) ||
89 nla_put_u16(msg
, NFC_ATTR_TARGET_SENS_RES
, target
->sens_res
) ||
90 nla_put_u8(msg
, NFC_ATTR_TARGET_SEL_RES
, target
->sel_res
))
92 if (target
->nfcid1_len
> 0 &&
93 nla_put(msg
, NFC_ATTR_TARGET_NFCID1
, target
->nfcid1_len
,
96 if (target
->sensb_res_len
> 0 &&
97 nla_put(msg
, NFC_ATTR_TARGET_SENSB_RES
, target
->sensb_res_len
,
100 if (target
->sensf_res_len
> 0 &&
101 nla_put(msg
, NFC_ATTR_TARGET_SENSF_RES
, target
->sensf_res_len
,
103 goto nla_put_failure
;
105 if (target
->is_iso15693
) {
106 if (nla_put_u8(msg
, NFC_ATTR_TARGET_ISO15693_DSFID
,
107 target
->iso15693_dsfid
) ||
108 nla_put(msg
, NFC_ATTR_TARGET_ISO15693_UID
,
109 sizeof(target
->iso15693_uid
), target
->iso15693_uid
))
110 goto nla_put_failure
;
113 genlmsg_end(msg
, hdr
);
117 genlmsg_cancel(msg
, hdr
);
121 static struct nfc_dev
*__get_device_from_cb(struct netlink_callback
*cb
)
127 rc
= nlmsg_parse(cb
->nlh
, GENL_HDRLEN
+ nfc_genl_family
.hdrsize
,
128 nfc_genl_family
.attrbuf
,
129 nfc_genl_family
.maxattr
,
134 if (!nfc_genl_family
.attrbuf
[NFC_ATTR_DEVICE_INDEX
])
135 return ERR_PTR(-EINVAL
);
137 idx
= nla_get_u32(nfc_genl_family
.attrbuf
[NFC_ATTR_DEVICE_INDEX
]);
139 dev
= nfc_get_device(idx
);
141 return ERR_PTR(-ENODEV
);
146 static int nfc_genl_dump_targets(struct sk_buff
*skb
,
147 struct netlink_callback
*cb
)
150 struct nfc_dev
*dev
= (struct nfc_dev
*) cb
->args
[1];
154 dev
= __get_device_from_cb(cb
);
158 cb
->args
[1] = (long) dev
;
161 device_lock(&dev
->dev
);
163 cb
->seq
= dev
->targets_generation
;
165 while (i
< dev
->n_targets
) {
166 rc
= nfc_genl_send_target(skb
, &dev
->targets
[i
], cb
,
174 device_unlock(&dev
->dev
);
181 static int nfc_genl_dump_targets_done(struct netlink_callback
*cb
)
183 struct nfc_dev
*dev
= (struct nfc_dev
*) cb
->args
[1];
191 int nfc_genl_targets_found(struct nfc_dev
*dev
)
196 dev
->genl_data
.poll_req_portid
= 0;
198 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_ATOMIC
);
202 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
203 NFC_EVENT_TARGETS_FOUND
);
207 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
208 goto nla_put_failure
;
210 genlmsg_end(msg
, hdr
);
212 return genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_ATOMIC
);
215 genlmsg_cancel(msg
, hdr
);
221 int nfc_genl_target_lost(struct nfc_dev
*dev
, u32 target_idx
)
226 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
230 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
231 NFC_EVENT_TARGET_LOST
);
235 if (nla_put_string(msg
, NFC_ATTR_DEVICE_NAME
, nfc_device_name(dev
)) ||
236 nla_put_u32(msg
, NFC_ATTR_TARGET_INDEX
, target_idx
))
237 goto nla_put_failure
;
239 genlmsg_end(msg
, hdr
);
241 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
246 genlmsg_cancel(msg
, hdr
);
252 int nfc_genl_tm_activated(struct nfc_dev
*dev
, u32 protocol
)
257 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
261 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
262 NFC_EVENT_TM_ACTIVATED
);
266 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
267 goto nla_put_failure
;
268 if (nla_put_u32(msg
, NFC_ATTR_TM_PROTOCOLS
, protocol
))
269 goto nla_put_failure
;
271 genlmsg_end(msg
, hdr
);
273 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
278 genlmsg_cancel(msg
, hdr
);
284 int nfc_genl_tm_deactivated(struct nfc_dev
*dev
)
289 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
293 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
294 NFC_EVENT_TM_DEACTIVATED
);
298 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
299 goto nla_put_failure
;
301 genlmsg_end(msg
, hdr
);
303 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
308 genlmsg_cancel(msg
, hdr
);
314 int nfc_genl_device_added(struct nfc_dev
*dev
)
319 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
323 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
324 NFC_EVENT_DEVICE_ADDED
);
328 if (nla_put_string(msg
, NFC_ATTR_DEVICE_NAME
, nfc_device_name(dev
)) ||
329 nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
330 nla_put_u32(msg
, NFC_ATTR_PROTOCOLS
, dev
->supported_protocols
) ||
331 nla_put_u8(msg
, NFC_ATTR_DEVICE_POWERED
, dev
->dev_up
))
332 goto nla_put_failure
;
334 genlmsg_end(msg
, hdr
);
336 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
341 genlmsg_cancel(msg
, hdr
);
347 int nfc_genl_device_removed(struct nfc_dev
*dev
)
352 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
356 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
357 NFC_EVENT_DEVICE_REMOVED
);
361 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
362 goto nla_put_failure
;
364 genlmsg_end(msg
, hdr
);
366 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
371 genlmsg_cancel(msg
, hdr
);
377 int nfc_genl_llc_send_sdres(struct nfc_dev
*dev
, struct hlist_head
*sdres_list
)
380 struct nlattr
*sdp_attr
, *uri_attr
;
381 struct nfc_llcp_sdp_tlv
*sdres
;
382 struct hlist_node
*n
;
387 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
391 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
392 NFC_EVENT_LLC_SDRES
);
396 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
397 goto nla_put_failure
;
399 sdp_attr
= nla_nest_start(msg
, NFC_ATTR_LLC_SDP
);
400 if (sdp_attr
== NULL
) {
402 goto nla_put_failure
;
406 hlist_for_each_entry_safe(sdres
, n
, sdres_list
, node
) {
407 pr_debug("uri: %s, sap: %d\n", sdres
->uri
, sdres
->sap
);
409 uri_attr
= nla_nest_start(msg
, i
++);
410 if (uri_attr
== NULL
) {
412 goto nla_put_failure
;
415 if (nla_put_u8(msg
, NFC_SDP_ATTR_SAP
, sdres
->sap
))
416 goto nla_put_failure
;
418 if (nla_put_string(msg
, NFC_SDP_ATTR_URI
, sdres
->uri
))
419 goto nla_put_failure
;
421 nla_nest_end(msg
, uri_attr
);
423 hlist_del(&sdres
->node
);
425 nfc_llcp_free_sdp_tlv(sdres
);
428 nla_nest_end(msg
, sdp_attr
);
430 genlmsg_end(msg
, hdr
);
432 return genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_ATOMIC
);
435 genlmsg_cancel(msg
, hdr
);
440 nfc_llcp_free_sdp_tlv_list(sdres_list
);
445 int nfc_genl_se_added(struct nfc_dev
*dev
, u32 se_idx
, u16 type
)
450 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
454 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
459 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
460 nla_put_u32(msg
, NFC_ATTR_SE_INDEX
, se_idx
) ||
461 nla_put_u8(msg
, NFC_ATTR_SE_TYPE
, type
))
462 goto nla_put_failure
;
464 genlmsg_end(msg
, hdr
);
466 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
471 genlmsg_cancel(msg
, hdr
);
477 int nfc_genl_se_removed(struct nfc_dev
*dev
, u32 se_idx
)
482 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
486 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
487 NFC_EVENT_SE_REMOVED
);
491 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
492 nla_put_u32(msg
, NFC_ATTR_SE_INDEX
, se_idx
))
493 goto nla_put_failure
;
495 genlmsg_end(msg
, hdr
);
497 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
502 genlmsg_cancel(msg
, hdr
);
508 int nfc_genl_se_transaction(struct nfc_dev
*dev
, u8 se_idx
,
509 struct nfc_evt_transaction
*evt_transaction
)
515 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
519 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
520 NFC_EVENT_SE_TRANSACTION
);
524 se
= nfc_find_se(dev
, se_idx
);
528 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
529 nla_put_u32(msg
, NFC_ATTR_SE_INDEX
, se_idx
) ||
530 nla_put_u8(msg
, NFC_ATTR_SE_TYPE
, se
->type
) ||
531 nla_put(msg
, NFC_ATTR_SE_AID
, evt_transaction
->aid_len
,
532 evt_transaction
->aid
) ||
533 nla_put(msg
, NFC_ATTR_SE_PARAMS
, evt_transaction
->params_len
,
534 evt_transaction
->params
))
535 goto nla_put_failure
;
537 /* evt_transaction is no more used */
538 devm_kfree(&dev
->dev
, evt_transaction
);
540 genlmsg_end(msg
, hdr
);
542 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
547 genlmsg_cancel(msg
, hdr
);
549 /* evt_transaction is no more used */
550 devm_kfree(&dev
->dev
, evt_transaction
);
555 static int nfc_genl_send_device(struct sk_buff
*msg
, struct nfc_dev
*dev
,
557 struct netlink_callback
*cb
,
562 hdr
= genlmsg_put(msg
, portid
, seq
, &nfc_genl_family
, flags
,
568 genl_dump_check_consistent(cb
, hdr
, &nfc_genl_family
);
570 if (nla_put_string(msg
, NFC_ATTR_DEVICE_NAME
, nfc_device_name(dev
)) ||
571 nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
572 nla_put_u32(msg
, NFC_ATTR_PROTOCOLS
, dev
->supported_protocols
) ||
573 nla_put_u8(msg
, NFC_ATTR_DEVICE_POWERED
, dev
->dev_up
) ||
574 nla_put_u8(msg
, NFC_ATTR_RF_MODE
, dev
->rf_mode
))
575 goto nla_put_failure
;
577 genlmsg_end(msg
, hdr
);
581 genlmsg_cancel(msg
, hdr
);
585 static int nfc_genl_dump_devices(struct sk_buff
*skb
,
586 struct netlink_callback
*cb
)
588 struct class_dev_iter
*iter
= (struct class_dev_iter
*) cb
->args
[0];
589 struct nfc_dev
*dev
= (struct nfc_dev
*) cb
->args
[1];
590 bool first_call
= false;
594 iter
= kmalloc(sizeof(struct class_dev_iter
), GFP_KERNEL
);
597 cb
->args
[0] = (long) iter
;
600 mutex_lock(&nfc_devlist_mutex
);
602 cb
->seq
= nfc_devlist_generation
;
605 nfc_device_iter_init(iter
);
606 dev
= nfc_device_iter_next(iter
);
612 rc
= nfc_genl_send_device(skb
, dev
, NETLINK_CB(cb
->skb
).portid
,
613 cb
->nlh
->nlmsg_seq
, cb
, NLM_F_MULTI
);
617 dev
= nfc_device_iter_next(iter
);
620 mutex_unlock(&nfc_devlist_mutex
);
622 cb
->args
[1] = (long) dev
;
627 static int nfc_genl_dump_devices_done(struct netlink_callback
*cb
)
629 struct class_dev_iter
*iter
= (struct class_dev_iter
*) cb
->args
[0];
631 nfc_device_iter_exit(iter
);
637 int nfc_genl_dep_link_up_event(struct nfc_dev
*dev
, u32 target_idx
,
638 u8 comm_mode
, u8 rf_mode
)
643 pr_debug("DEP link is up\n");
645 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_ATOMIC
);
649 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0, NFC_CMD_DEP_LINK_UP
);
653 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
654 goto nla_put_failure
;
655 if (rf_mode
== NFC_RF_INITIATOR
&&
656 nla_put_u32(msg
, NFC_ATTR_TARGET_INDEX
, target_idx
))
657 goto nla_put_failure
;
658 if (nla_put_u8(msg
, NFC_ATTR_COMM_MODE
, comm_mode
) ||
659 nla_put_u8(msg
, NFC_ATTR_RF_MODE
, rf_mode
))
660 goto nla_put_failure
;
662 genlmsg_end(msg
, hdr
);
664 dev
->dep_link_up
= true;
666 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_ATOMIC
);
671 genlmsg_cancel(msg
, hdr
);
677 int nfc_genl_dep_link_down_event(struct nfc_dev
*dev
)
682 pr_debug("DEP link is down\n");
684 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_ATOMIC
);
688 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
689 NFC_CMD_DEP_LINK_DOWN
);
693 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
694 goto nla_put_failure
;
696 genlmsg_end(msg
, hdr
);
698 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_ATOMIC
);
703 genlmsg_cancel(msg
, hdr
);
709 static int nfc_genl_get_device(struct sk_buff
*skb
, struct genl_info
*info
)
716 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
719 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
721 dev
= nfc_get_device(idx
);
725 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
731 rc
= nfc_genl_send_device(msg
, dev
, info
->snd_portid
, info
->snd_seq
,
738 return genlmsg_reply(msg
, info
);
747 static int nfc_genl_dev_up(struct sk_buff
*skb
, struct genl_info
*info
)
753 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
756 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
758 dev
= nfc_get_device(idx
);
762 rc
= nfc_dev_up(dev
);
768 static int nfc_genl_dev_down(struct sk_buff
*skb
, struct genl_info
*info
)
774 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
777 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
779 dev
= nfc_get_device(idx
);
783 rc
= nfc_dev_down(dev
);
789 static int nfc_genl_start_poll(struct sk_buff
*skb
, struct genl_info
*info
)
794 u32 im_protocols
= 0, tm_protocols
= 0;
796 pr_debug("Poll start\n");
798 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
799 ((!info
->attrs
[NFC_ATTR_IM_PROTOCOLS
] &&
800 !info
->attrs
[NFC_ATTR_PROTOCOLS
]) &&
801 !info
->attrs
[NFC_ATTR_TM_PROTOCOLS
]))
804 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
806 if (info
->attrs
[NFC_ATTR_TM_PROTOCOLS
])
807 tm_protocols
= nla_get_u32(info
->attrs
[NFC_ATTR_TM_PROTOCOLS
]);
809 if (info
->attrs
[NFC_ATTR_IM_PROTOCOLS
])
810 im_protocols
= nla_get_u32(info
->attrs
[NFC_ATTR_IM_PROTOCOLS
]);
811 else if (info
->attrs
[NFC_ATTR_PROTOCOLS
])
812 im_protocols
= nla_get_u32(info
->attrs
[NFC_ATTR_PROTOCOLS
]);
814 dev
= nfc_get_device(idx
);
818 mutex_lock(&dev
->genl_data
.genl_data_mutex
);
820 rc
= nfc_start_poll(dev
, im_protocols
, tm_protocols
);
822 dev
->genl_data
.poll_req_portid
= info
->snd_portid
;
824 mutex_unlock(&dev
->genl_data
.genl_data_mutex
);
830 static int nfc_genl_stop_poll(struct sk_buff
*skb
, struct genl_info
*info
)
836 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
839 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
841 dev
= nfc_get_device(idx
);
845 device_lock(&dev
->dev
);
848 device_unlock(&dev
->dev
);
852 device_unlock(&dev
->dev
);
854 mutex_lock(&dev
->genl_data
.genl_data_mutex
);
856 if (dev
->genl_data
.poll_req_portid
!= info
->snd_portid
) {
861 rc
= nfc_stop_poll(dev
);
862 dev
->genl_data
.poll_req_portid
= 0;
865 mutex_unlock(&dev
->genl_data
.genl_data_mutex
);
870 static int nfc_genl_activate_target(struct sk_buff
*skb
, struct genl_info
*info
)
873 u32 device_idx
, target_idx
, protocol
;
876 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
879 device_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
881 dev
= nfc_get_device(device_idx
);
885 target_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_TARGET_INDEX
]);
886 protocol
= nla_get_u32(info
->attrs
[NFC_ATTR_PROTOCOLS
]);
888 nfc_deactivate_target(dev
, target_idx
);
889 rc
= nfc_activate_target(dev
, target_idx
, protocol
);
895 static int nfc_genl_dep_link_up(struct sk_buff
*skb
, struct genl_info
*info
)
902 pr_debug("DEP link up\n");
904 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
905 !info
->attrs
[NFC_ATTR_COMM_MODE
])
908 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
909 if (!info
->attrs
[NFC_ATTR_TARGET_INDEX
])
910 tgt_idx
= NFC_TARGET_IDX_ANY
;
912 tgt_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_TARGET_INDEX
]);
914 comm
= nla_get_u8(info
->attrs
[NFC_ATTR_COMM_MODE
]);
916 if (comm
!= NFC_COMM_ACTIVE
&& comm
!= NFC_COMM_PASSIVE
)
919 dev
= nfc_get_device(idx
);
923 rc
= nfc_dep_link_up(dev
, tgt_idx
, comm
);
930 static int nfc_genl_dep_link_down(struct sk_buff
*skb
, struct genl_info
*info
)
936 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
939 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
941 dev
= nfc_get_device(idx
);
945 rc
= nfc_dep_link_down(dev
);
951 static int nfc_genl_send_params(struct sk_buff
*msg
,
952 struct nfc_llcp_local
*local
,
957 hdr
= genlmsg_put(msg
, portid
, seq
, &nfc_genl_family
, 0,
958 NFC_CMD_LLC_GET_PARAMS
);
962 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, local
->dev
->idx
) ||
963 nla_put_u8(msg
, NFC_ATTR_LLC_PARAM_LTO
, local
->lto
) ||
964 nla_put_u8(msg
, NFC_ATTR_LLC_PARAM_RW
, local
->rw
) ||
965 nla_put_u16(msg
, NFC_ATTR_LLC_PARAM_MIUX
, be16_to_cpu(local
->miux
)))
966 goto nla_put_failure
;
968 genlmsg_end(msg
, hdr
);
973 genlmsg_cancel(msg
, hdr
);
977 static int nfc_genl_llc_get_params(struct sk_buff
*skb
, struct genl_info
*info
)
980 struct nfc_llcp_local
*local
;
982 struct sk_buff
*msg
= NULL
;
985 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
988 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
990 dev
= nfc_get_device(idx
);
994 device_lock(&dev
->dev
);
996 local
= nfc_llcp_find_local(dev
);
1002 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
1008 rc
= nfc_genl_send_params(msg
, local
, info
->snd_portid
, info
->snd_seq
);
1011 device_unlock(&dev
->dev
);
1013 nfc_put_device(dev
);
1022 return genlmsg_reply(msg
, info
);
1025 static int nfc_genl_llc_set_params(struct sk_buff
*skb
, struct genl_info
*info
)
1027 struct nfc_dev
*dev
;
1028 struct nfc_llcp_local
*local
;
1034 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
1035 (!info
->attrs
[NFC_ATTR_LLC_PARAM_LTO
] &&
1036 !info
->attrs
[NFC_ATTR_LLC_PARAM_RW
] &&
1037 !info
->attrs
[NFC_ATTR_LLC_PARAM_MIUX
]))
1040 if (info
->attrs
[NFC_ATTR_LLC_PARAM_RW
]) {
1041 rw
= nla_get_u8(info
->attrs
[NFC_ATTR_LLC_PARAM_RW
]);
1043 if (rw
> LLCP_MAX_RW
)
1047 if (info
->attrs
[NFC_ATTR_LLC_PARAM_MIUX
]) {
1048 miux
= nla_get_u16(info
->attrs
[NFC_ATTR_LLC_PARAM_MIUX
]);
1050 if (miux
> LLCP_MAX_MIUX
)
1054 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1056 dev
= nfc_get_device(idx
);
1060 device_lock(&dev
->dev
);
1062 local
= nfc_llcp_find_local(dev
);
1064 nfc_put_device(dev
);
1069 if (info
->attrs
[NFC_ATTR_LLC_PARAM_LTO
]) {
1070 if (dev
->dep_link_up
) {
1075 local
->lto
= nla_get_u8(info
->attrs
[NFC_ATTR_LLC_PARAM_LTO
]);
1078 if (info
->attrs
[NFC_ATTR_LLC_PARAM_RW
])
1081 if (info
->attrs
[NFC_ATTR_LLC_PARAM_MIUX
])
1082 local
->miux
= cpu_to_be16(miux
);
1085 device_unlock(&dev
->dev
);
1087 nfc_put_device(dev
);
1092 static int nfc_genl_llc_sdreq(struct sk_buff
*skb
, struct genl_info
*info
)
1094 struct nfc_dev
*dev
;
1095 struct nfc_llcp_local
*local
;
1096 struct nlattr
*attr
, *sdp_attrs
[NFC_SDP_ATTR_MAX
+1];
1101 size_t uri_len
, tlvs_len
;
1102 struct hlist_head sdreq_list
;
1103 struct nfc_llcp_sdp_tlv
*sdreq
;
1105 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
1106 !info
->attrs
[NFC_ATTR_LLC_SDP
])
1109 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1111 dev
= nfc_get_device(idx
);
1117 device_lock(&dev
->dev
);
1119 if (dev
->dep_link_up
== false) {
1124 local
= nfc_llcp_find_local(dev
);
1126 nfc_put_device(dev
);
1131 INIT_HLIST_HEAD(&sdreq_list
);
1135 nla_for_each_nested(attr
, info
->attrs
[NFC_ATTR_LLC_SDP
], rem
) {
1136 rc
= nla_parse_nested(sdp_attrs
, NFC_SDP_ATTR_MAX
, attr
,
1137 nfc_sdp_genl_policy
);
1144 if (!sdp_attrs
[NFC_SDP_ATTR_URI
])
1147 uri_len
= nla_len(sdp_attrs
[NFC_SDP_ATTR_URI
]);
1151 uri
= nla_data(sdp_attrs
[NFC_SDP_ATTR_URI
]);
1152 if (uri
== NULL
|| *uri
== 0)
1155 tid
= local
->sdreq_next_tid
++;
1157 sdreq
= nfc_llcp_build_sdreq_tlv(tid
, uri
, uri_len
);
1158 if (sdreq
== NULL
) {
1163 tlvs_len
+= sdreq
->tlv_len
;
1165 hlist_add_head(&sdreq
->node
, &sdreq_list
);
1168 if (hlist_empty(&sdreq_list
)) {
1173 rc
= nfc_llcp_send_snl_sdreq(local
, &sdreq_list
, tlvs_len
);
1175 device_unlock(&dev
->dev
);
1177 nfc_put_device(dev
);
1182 static int nfc_genl_fw_download(struct sk_buff
*skb
, struct genl_info
*info
)
1184 struct nfc_dev
*dev
;
1187 char firmware_name
[NFC_FIRMWARE_NAME_MAXSIZE
+ 1];
1189 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
1192 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1194 dev
= nfc_get_device(idx
);
1198 nla_strlcpy(firmware_name
, info
->attrs
[NFC_ATTR_FIRMWARE_NAME
],
1199 sizeof(firmware_name
));
1201 rc
= nfc_fw_download(dev
, firmware_name
);
1203 nfc_put_device(dev
);
1207 int nfc_genl_fw_download_done(struct nfc_dev
*dev
, const char *firmware_name
,
1210 struct sk_buff
*msg
;
1213 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
1217 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
1218 NFC_CMD_FW_DOWNLOAD
);
1222 if (nla_put_string(msg
, NFC_ATTR_FIRMWARE_NAME
, firmware_name
) ||
1223 nla_put_u32(msg
, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS
, result
) ||
1224 nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
1225 goto nla_put_failure
;
1227 genlmsg_end(msg
, hdr
);
1229 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
1234 genlmsg_cancel(msg
, hdr
);
1240 static int nfc_genl_enable_se(struct sk_buff
*skb
, struct genl_info
*info
)
1242 struct nfc_dev
*dev
;
1246 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
1247 !info
->attrs
[NFC_ATTR_SE_INDEX
])
1250 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1251 se_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_SE_INDEX
]);
1253 dev
= nfc_get_device(idx
);
1257 rc
= nfc_enable_se(dev
, se_idx
);
1259 nfc_put_device(dev
);
1263 static int nfc_genl_disable_se(struct sk_buff
*skb
, struct genl_info
*info
)
1265 struct nfc_dev
*dev
;
1269 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
1270 !info
->attrs
[NFC_ATTR_SE_INDEX
])
1273 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1274 se_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_SE_INDEX
]);
1276 dev
= nfc_get_device(idx
);
1280 rc
= nfc_disable_se(dev
, se_idx
);
1282 nfc_put_device(dev
);
1286 static int nfc_genl_send_se(struct sk_buff
*msg
, struct nfc_dev
*dev
,
1287 u32 portid
, u32 seq
,
1288 struct netlink_callback
*cb
,
1292 struct nfc_se
*se
, *n
;
1294 list_for_each_entry_safe(se
, n
, &dev
->secure_elements
, list
) {
1295 hdr
= genlmsg_put(msg
, portid
, seq
, &nfc_genl_family
, flags
,
1298 goto nla_put_failure
;
1301 genl_dump_check_consistent(cb
, hdr
, &nfc_genl_family
);
1303 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
1304 nla_put_u32(msg
, NFC_ATTR_SE_INDEX
, se
->idx
) ||
1305 nla_put_u8(msg
, NFC_ATTR_SE_TYPE
, se
->type
))
1306 goto nla_put_failure
;
1308 genlmsg_end(msg
, hdr
);
1314 genlmsg_cancel(msg
, hdr
);
1318 static int nfc_genl_dump_ses(struct sk_buff
*skb
,
1319 struct netlink_callback
*cb
)
1321 struct class_dev_iter
*iter
= (struct class_dev_iter
*) cb
->args
[0];
1322 struct nfc_dev
*dev
= (struct nfc_dev
*) cb
->args
[1];
1323 bool first_call
= false;
1327 iter
= kmalloc(sizeof(struct class_dev_iter
), GFP_KERNEL
);
1330 cb
->args
[0] = (long) iter
;
1333 mutex_lock(&nfc_devlist_mutex
);
1335 cb
->seq
= nfc_devlist_generation
;
1338 nfc_device_iter_init(iter
);
1339 dev
= nfc_device_iter_next(iter
);
1345 rc
= nfc_genl_send_se(skb
, dev
, NETLINK_CB(cb
->skb
).portid
,
1346 cb
->nlh
->nlmsg_seq
, cb
, NLM_F_MULTI
);
1350 dev
= nfc_device_iter_next(iter
);
1353 mutex_unlock(&nfc_devlist_mutex
);
1355 cb
->args
[1] = (long) dev
;
1360 static int nfc_genl_dump_ses_done(struct netlink_callback
*cb
)
1362 struct class_dev_iter
*iter
= (struct class_dev_iter
*) cb
->args
[0];
1364 nfc_device_iter_exit(iter
);
1370 static int nfc_se_io(struct nfc_dev
*dev
, u32 se_idx
,
1371 u8
*apdu
, size_t apdu_length
,
1372 se_io_cb_t cb
, void *cb_context
)
1377 pr_debug("%s se index %d\n", dev_name(&dev
->dev
), se_idx
);
1379 device_lock(&dev
->dev
);
1381 if (!device_is_registered(&dev
->dev
)) {
1391 if (!dev
->ops
->se_io
) {
1396 se
= nfc_find_se(dev
, se_idx
);
1402 if (se
->state
!= NFC_SE_ENABLED
) {
1407 rc
= dev
->ops
->se_io(dev
, se_idx
, apdu
,
1408 apdu_length
, cb
, cb_context
);
1411 device_unlock(&dev
->dev
);
1420 static void se_io_cb(void *context
, u8
*apdu
, size_t apdu_len
, int err
)
1422 struct se_io_ctx
*ctx
= context
;
1423 struct sk_buff
*msg
;
1426 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
1432 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
1437 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, ctx
->dev_idx
) ||
1438 nla_put_u32(msg
, NFC_ATTR_SE_INDEX
, ctx
->se_idx
) ||
1439 nla_put(msg
, NFC_ATTR_SE_APDU
, apdu_len
, apdu
))
1440 goto nla_put_failure
;
1442 genlmsg_end(msg
, hdr
);
1444 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
1451 genlmsg_cancel(msg
, hdr
);
1459 static int nfc_genl_se_io(struct sk_buff
*skb
, struct genl_info
*info
)
1461 struct nfc_dev
*dev
;
1462 struct se_io_ctx
*ctx
;
1463 u32 dev_idx
, se_idx
;
1467 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
1468 !info
->attrs
[NFC_ATTR_SE_INDEX
] ||
1469 !info
->attrs
[NFC_ATTR_SE_APDU
])
1472 dev_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1473 se_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_SE_INDEX
]);
1475 dev
= nfc_get_device(dev_idx
);
1479 if (!dev
->ops
|| !dev
->ops
->se_io
)
1482 apdu_len
= nla_len(info
->attrs
[NFC_ATTR_SE_APDU
]);
1486 apdu
= nla_data(info
->attrs
[NFC_ATTR_SE_APDU
]);
1490 ctx
= kzalloc(sizeof(struct se_io_ctx
), GFP_KERNEL
);
1494 ctx
->dev_idx
= dev_idx
;
1495 ctx
->se_idx
= se_idx
;
1497 return nfc_se_io(dev
, se_idx
, apdu
, apdu_len
, se_io_cb
, ctx
);
1500 static int nfc_genl_vendor_cmd(struct sk_buff
*skb
,
1501 struct genl_info
*info
)
1503 struct nfc_dev
*dev
;
1504 struct nfc_vendor_cmd
*cmd
;
1505 u32 dev_idx
, vid
, subcmd
;
1510 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
1511 !info
->attrs
[NFC_ATTR_VENDOR_ID
] ||
1512 !info
->attrs
[NFC_ATTR_VENDOR_SUBCMD
])
1515 dev_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1516 vid
= nla_get_u32(info
->attrs
[NFC_ATTR_VENDOR_ID
]);
1517 subcmd
= nla_get_u32(info
->attrs
[NFC_ATTR_VENDOR_SUBCMD
]);
1519 dev
= nfc_get_device(dev_idx
);
1520 if (!dev
|| !dev
->vendor_cmds
|| !dev
->n_vendor_cmds
)
1523 if (info
->attrs
[NFC_ATTR_VENDOR_DATA
]) {
1524 data
= nla_data(info
->attrs
[NFC_ATTR_VENDOR_DATA
]);
1525 data_len
= nla_len(info
->attrs
[NFC_ATTR_VENDOR_DATA
]);
1533 for (i
= 0; i
< dev
->n_vendor_cmds
; i
++) {
1534 cmd
= &dev
->vendor_cmds
[i
];
1536 if (cmd
->vendor_id
!= vid
|| cmd
->subcmd
!= subcmd
)
1539 dev
->cur_cmd_info
= info
;
1540 err
= cmd
->doit(dev
, data
, data_len
);
1541 dev
->cur_cmd_info
= NULL
;
1548 /* message building helper */
1549 static inline void *nfc_hdr_put(struct sk_buff
*skb
, u32 portid
, u32 seq
,
1552 /* since there is no private header just add the generic one */
1553 return genlmsg_put(skb
, portid
, seq
, &nfc_genl_family
, flags
, cmd
);
1556 static struct sk_buff
*
1557 __nfc_alloc_vendor_cmd_skb(struct nfc_dev
*dev
, int approxlen
,
1558 u32 portid
, u32 seq
,
1559 enum nfc_attrs attr
,
1560 u32 oui
, u32 subcmd
, gfp_t gfp
)
1562 struct sk_buff
*skb
;
1565 skb
= nlmsg_new(approxlen
+ 100, gfp
);
1569 hdr
= nfc_hdr_put(skb
, portid
, seq
, 0, NFC_CMD_VENDOR
);
1575 if (nla_put_u32(skb
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
1576 goto nla_put_failure
;
1577 if (nla_put_u32(skb
, NFC_ATTR_VENDOR_ID
, oui
))
1578 goto nla_put_failure
;
1579 if (nla_put_u32(skb
, NFC_ATTR_VENDOR_SUBCMD
, subcmd
))
1580 goto nla_put_failure
;
1582 ((void **)skb
->cb
)[0] = dev
;
1583 ((void **)skb
->cb
)[1] = hdr
;
1592 struct sk_buff
*__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev
*dev
,
1593 enum nfc_attrs attr
,
1594 u32 oui
, u32 subcmd
,
1597 if (WARN_ON(!dev
->cur_cmd_info
))
1600 return __nfc_alloc_vendor_cmd_skb(dev
, approxlen
,
1601 dev
->cur_cmd_info
->snd_portid
,
1602 dev
->cur_cmd_info
->snd_seq
, attr
,
1603 oui
, subcmd
, GFP_KERNEL
);
1605 EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb
);
1607 int nfc_vendor_cmd_reply(struct sk_buff
*skb
)
1609 struct nfc_dev
*dev
= ((void **)skb
->cb
)[0];
1610 void *hdr
= ((void **)skb
->cb
)[1];
1612 /* clear CB data for netlink core to own from now on */
1613 memset(skb
->cb
, 0, sizeof(skb
->cb
));
1615 if (WARN_ON(!dev
->cur_cmd_info
)) {
1620 genlmsg_end(skb
, hdr
);
1621 return genlmsg_reply(skb
, dev
->cur_cmd_info
);
1623 EXPORT_SYMBOL(nfc_vendor_cmd_reply
);
1625 static const struct genl_ops nfc_genl_ops
[] = {
1627 .cmd
= NFC_CMD_GET_DEVICE
,
1628 .doit
= nfc_genl_get_device
,
1629 .dumpit
= nfc_genl_dump_devices
,
1630 .done
= nfc_genl_dump_devices_done
,
1631 .policy
= nfc_genl_policy
,
1634 .cmd
= NFC_CMD_DEV_UP
,
1635 .doit
= nfc_genl_dev_up
,
1636 .policy
= nfc_genl_policy
,
1639 .cmd
= NFC_CMD_DEV_DOWN
,
1640 .doit
= nfc_genl_dev_down
,
1641 .policy
= nfc_genl_policy
,
1644 .cmd
= NFC_CMD_START_POLL
,
1645 .doit
= nfc_genl_start_poll
,
1646 .policy
= nfc_genl_policy
,
1649 .cmd
= NFC_CMD_STOP_POLL
,
1650 .doit
= nfc_genl_stop_poll
,
1651 .policy
= nfc_genl_policy
,
1654 .cmd
= NFC_CMD_DEP_LINK_UP
,
1655 .doit
= nfc_genl_dep_link_up
,
1656 .policy
= nfc_genl_policy
,
1659 .cmd
= NFC_CMD_DEP_LINK_DOWN
,
1660 .doit
= nfc_genl_dep_link_down
,
1661 .policy
= nfc_genl_policy
,
1664 .cmd
= NFC_CMD_GET_TARGET
,
1665 .dumpit
= nfc_genl_dump_targets
,
1666 .done
= nfc_genl_dump_targets_done
,
1667 .policy
= nfc_genl_policy
,
1670 .cmd
= NFC_CMD_LLC_GET_PARAMS
,
1671 .doit
= nfc_genl_llc_get_params
,
1672 .policy
= nfc_genl_policy
,
1675 .cmd
= NFC_CMD_LLC_SET_PARAMS
,
1676 .doit
= nfc_genl_llc_set_params
,
1677 .policy
= nfc_genl_policy
,
1680 .cmd
= NFC_CMD_LLC_SDREQ
,
1681 .doit
= nfc_genl_llc_sdreq
,
1682 .policy
= nfc_genl_policy
,
1685 .cmd
= NFC_CMD_FW_DOWNLOAD
,
1686 .doit
= nfc_genl_fw_download
,
1687 .policy
= nfc_genl_policy
,
1690 .cmd
= NFC_CMD_ENABLE_SE
,
1691 .doit
= nfc_genl_enable_se
,
1692 .policy
= nfc_genl_policy
,
1695 .cmd
= NFC_CMD_DISABLE_SE
,
1696 .doit
= nfc_genl_disable_se
,
1697 .policy
= nfc_genl_policy
,
1700 .cmd
= NFC_CMD_GET_SE
,
1701 .dumpit
= nfc_genl_dump_ses
,
1702 .done
= nfc_genl_dump_ses_done
,
1703 .policy
= nfc_genl_policy
,
1706 .cmd
= NFC_CMD_SE_IO
,
1707 .doit
= nfc_genl_se_io
,
1708 .policy
= nfc_genl_policy
,
1711 .cmd
= NFC_CMD_ACTIVATE_TARGET
,
1712 .doit
= nfc_genl_activate_target
,
1713 .policy
= nfc_genl_policy
,
1716 .cmd
= NFC_CMD_VENDOR
,
1717 .doit
= nfc_genl_vendor_cmd
,
1718 .policy
= nfc_genl_policy
,
1723 struct urelease_work
{
1724 struct work_struct w
;
1728 static void nfc_urelease_event_work(struct work_struct
*work
)
1730 struct urelease_work
*w
= container_of(work
, struct urelease_work
, w
);
1731 struct class_dev_iter iter
;
1732 struct nfc_dev
*dev
;
1734 pr_debug("portid %d\n", w
->portid
);
1736 mutex_lock(&nfc_devlist_mutex
);
1738 nfc_device_iter_init(&iter
);
1739 dev
= nfc_device_iter_next(&iter
);
1742 mutex_lock(&dev
->genl_data
.genl_data_mutex
);
1744 if (dev
->genl_data
.poll_req_portid
== w
->portid
) {
1746 dev
->genl_data
.poll_req_portid
= 0;
1749 mutex_unlock(&dev
->genl_data
.genl_data_mutex
);
1751 dev
= nfc_device_iter_next(&iter
);
1754 nfc_device_iter_exit(&iter
);
1756 mutex_unlock(&nfc_devlist_mutex
);
1761 static int nfc_genl_rcv_nl_event(struct notifier_block
*this,
1762 unsigned long event
, void *ptr
)
1764 struct netlink_notify
*n
= ptr
;
1765 struct urelease_work
*w
;
1767 if (event
!= NETLINK_URELEASE
|| n
->protocol
!= NETLINK_GENERIC
)
1770 pr_debug("NETLINK_URELEASE event from id %d\n", n
->portid
);
1772 w
= kmalloc(sizeof(*w
), GFP_ATOMIC
);
1774 INIT_WORK((struct work_struct
*) w
, nfc_urelease_event_work
);
1775 w
->portid
= n
->portid
;
1776 schedule_work((struct work_struct
*) w
);
1783 void nfc_genl_data_init(struct nfc_genl_data
*genl_data
)
1785 genl_data
->poll_req_portid
= 0;
1786 mutex_init(&genl_data
->genl_data_mutex
);
1789 void nfc_genl_data_exit(struct nfc_genl_data
*genl_data
)
1791 mutex_destroy(&genl_data
->genl_data_mutex
);
1794 static struct notifier_block nl_notifier
= {
1795 .notifier_call
= nfc_genl_rcv_nl_event
,
1799 * nfc_genl_init() - Initialize netlink interface
1801 * This initialization function registers the nfc netlink family.
1803 int __init
nfc_genl_init(void)
1807 rc
= genl_register_family_with_ops_groups(&nfc_genl_family
,
1813 netlink_register_notifier(&nl_notifier
);
1819 * nfc_genl_exit() - Deinitialize netlink interface
1821 * This exit function unregisters the nfc netlink family.
1823 void nfc_genl_exit(void)
1825 netlink_unregister_notifier(&nl_notifier
);
1826 genl_unregister_family(&nfc_genl_family
);