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 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
22 #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
24 #include <net/genetlink.h>
25 #include <linux/nfc.h>
26 #include <linux/slab.h>
31 static const struct genl_multicast_group nfc_genl_mcgrps
[] = {
32 { .name
= NFC_GENL_MCAST_EVENT_NAME
, },
35 static struct genl_family nfc_genl_family
= {
36 .id
= GENL_ID_GENERATE
,
38 .name
= NFC_GENL_NAME
,
39 .version
= NFC_GENL_VERSION
,
40 .maxattr
= NFC_ATTR_MAX
,
43 static const struct nla_policy nfc_genl_policy
[NFC_ATTR_MAX
+ 1] = {
44 [NFC_ATTR_DEVICE_INDEX
] = { .type
= NLA_U32
},
45 [NFC_ATTR_DEVICE_NAME
] = { .type
= NLA_STRING
,
46 .len
= NFC_DEVICE_NAME_MAXSIZE
},
47 [NFC_ATTR_PROTOCOLS
] = { .type
= NLA_U32
},
48 [NFC_ATTR_COMM_MODE
] = { .type
= NLA_U8
},
49 [NFC_ATTR_RF_MODE
] = { .type
= NLA_U8
},
50 [NFC_ATTR_DEVICE_POWERED
] = { .type
= NLA_U8
},
51 [NFC_ATTR_IM_PROTOCOLS
] = { .type
= NLA_U32
},
52 [NFC_ATTR_TM_PROTOCOLS
] = { .type
= NLA_U32
},
53 [NFC_ATTR_LLC_PARAM_LTO
] = { .type
= NLA_U8
},
54 [NFC_ATTR_LLC_PARAM_RW
] = { .type
= NLA_U8
},
55 [NFC_ATTR_LLC_PARAM_MIUX
] = { .type
= NLA_U16
},
56 [NFC_ATTR_LLC_SDP
] = { .type
= NLA_NESTED
},
57 [NFC_ATTR_FIRMWARE_NAME
] = { .type
= NLA_STRING
,
58 .len
= NFC_FIRMWARE_NAME_MAXSIZE
},
59 [NFC_ATTR_SE_APDU
] = { .type
= NLA_BINARY
},
62 static const struct nla_policy nfc_sdp_genl_policy
[NFC_SDP_ATTR_MAX
+ 1] = {
63 [NFC_SDP_ATTR_URI
] = { .type
= NLA_STRING
},
64 [NFC_SDP_ATTR_SAP
] = { .type
= NLA_U8
},
67 static int nfc_genl_send_target(struct sk_buff
*msg
, struct nfc_target
*target
,
68 struct netlink_callback
*cb
, int flags
)
72 hdr
= genlmsg_put(msg
, NETLINK_CB(cb
->skb
).portid
, cb
->nlh
->nlmsg_seq
,
73 &nfc_genl_family
, flags
, NFC_CMD_GET_TARGET
);
77 genl_dump_check_consistent(cb
, hdr
, &nfc_genl_family
);
79 if (nla_put_u32(msg
, NFC_ATTR_TARGET_INDEX
, target
->idx
) ||
80 nla_put_u32(msg
, NFC_ATTR_PROTOCOLS
, target
->supported_protocols
) ||
81 nla_put_u16(msg
, NFC_ATTR_TARGET_SENS_RES
, target
->sens_res
) ||
82 nla_put_u8(msg
, NFC_ATTR_TARGET_SEL_RES
, target
->sel_res
))
84 if (target
->nfcid1_len
> 0 &&
85 nla_put(msg
, NFC_ATTR_TARGET_NFCID1
, target
->nfcid1_len
,
88 if (target
->sensb_res_len
> 0 &&
89 nla_put(msg
, NFC_ATTR_TARGET_SENSB_RES
, target
->sensb_res_len
,
92 if (target
->sensf_res_len
> 0 &&
93 nla_put(msg
, NFC_ATTR_TARGET_SENSF_RES
, target
->sensf_res_len
,
97 if (target
->is_iso15693
) {
98 if (nla_put_u8(msg
, NFC_ATTR_TARGET_ISO15693_DSFID
,
99 target
->iso15693_dsfid
) ||
100 nla_put(msg
, NFC_ATTR_TARGET_ISO15693_UID
,
101 sizeof(target
->iso15693_uid
), target
->iso15693_uid
))
102 goto nla_put_failure
;
105 return genlmsg_end(msg
, hdr
);
108 genlmsg_cancel(msg
, hdr
);
112 static struct nfc_dev
*__get_device_from_cb(struct netlink_callback
*cb
)
118 rc
= nlmsg_parse(cb
->nlh
, GENL_HDRLEN
+ nfc_genl_family
.hdrsize
,
119 nfc_genl_family
.attrbuf
,
120 nfc_genl_family
.maxattr
,
125 if (!nfc_genl_family
.attrbuf
[NFC_ATTR_DEVICE_INDEX
])
126 return ERR_PTR(-EINVAL
);
128 idx
= nla_get_u32(nfc_genl_family
.attrbuf
[NFC_ATTR_DEVICE_INDEX
]);
130 dev
= nfc_get_device(idx
);
132 return ERR_PTR(-ENODEV
);
137 static int nfc_genl_dump_targets(struct sk_buff
*skb
,
138 struct netlink_callback
*cb
)
141 struct nfc_dev
*dev
= (struct nfc_dev
*) cb
->args
[1];
145 dev
= __get_device_from_cb(cb
);
149 cb
->args
[1] = (long) dev
;
152 device_lock(&dev
->dev
);
154 cb
->seq
= dev
->targets_generation
;
156 while (i
< dev
->n_targets
) {
157 rc
= nfc_genl_send_target(skb
, &dev
->targets
[i
], cb
,
165 device_unlock(&dev
->dev
);
172 static int nfc_genl_dump_targets_done(struct netlink_callback
*cb
)
174 struct nfc_dev
*dev
= (struct nfc_dev
*) cb
->args
[1];
182 int nfc_genl_targets_found(struct nfc_dev
*dev
)
187 dev
->genl_data
.poll_req_portid
= 0;
189 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_ATOMIC
);
193 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
194 NFC_EVENT_TARGETS_FOUND
);
198 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
199 goto nla_put_failure
;
201 genlmsg_end(msg
, hdr
);
203 return genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_ATOMIC
);
206 genlmsg_cancel(msg
, hdr
);
212 int nfc_genl_target_lost(struct nfc_dev
*dev
, u32 target_idx
)
217 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
221 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
222 NFC_EVENT_TARGET_LOST
);
226 if (nla_put_string(msg
, NFC_ATTR_DEVICE_NAME
, nfc_device_name(dev
)) ||
227 nla_put_u32(msg
, NFC_ATTR_TARGET_INDEX
, target_idx
))
228 goto nla_put_failure
;
230 genlmsg_end(msg
, hdr
);
232 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
237 genlmsg_cancel(msg
, hdr
);
243 int nfc_genl_tm_activated(struct nfc_dev
*dev
, u32 protocol
)
248 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
252 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
253 NFC_EVENT_TM_ACTIVATED
);
257 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
258 goto nla_put_failure
;
259 if (nla_put_u32(msg
, NFC_ATTR_TM_PROTOCOLS
, protocol
))
260 goto nla_put_failure
;
262 genlmsg_end(msg
, hdr
);
264 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
269 genlmsg_cancel(msg
, hdr
);
275 int nfc_genl_tm_deactivated(struct nfc_dev
*dev
)
280 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
284 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
285 NFC_EVENT_TM_DEACTIVATED
);
289 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
290 goto nla_put_failure
;
292 genlmsg_end(msg
, hdr
);
294 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
299 genlmsg_cancel(msg
, hdr
);
305 int nfc_genl_device_added(struct nfc_dev
*dev
)
310 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
314 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
315 NFC_EVENT_DEVICE_ADDED
);
319 if (nla_put_string(msg
, NFC_ATTR_DEVICE_NAME
, nfc_device_name(dev
)) ||
320 nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
321 nla_put_u32(msg
, NFC_ATTR_PROTOCOLS
, dev
->supported_protocols
) ||
322 nla_put_u8(msg
, NFC_ATTR_DEVICE_POWERED
, dev
->dev_up
))
323 goto nla_put_failure
;
325 genlmsg_end(msg
, hdr
);
327 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
332 genlmsg_cancel(msg
, hdr
);
338 int nfc_genl_device_removed(struct nfc_dev
*dev
)
343 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
347 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
348 NFC_EVENT_DEVICE_REMOVED
);
352 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
353 goto nla_put_failure
;
355 genlmsg_end(msg
, hdr
);
357 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
362 genlmsg_cancel(msg
, hdr
);
368 int nfc_genl_llc_send_sdres(struct nfc_dev
*dev
, struct hlist_head
*sdres_list
)
371 struct nlattr
*sdp_attr
, *uri_attr
;
372 struct nfc_llcp_sdp_tlv
*sdres
;
373 struct hlist_node
*n
;
378 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
382 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
383 NFC_EVENT_LLC_SDRES
);
387 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
388 goto nla_put_failure
;
390 sdp_attr
= nla_nest_start(msg
, NFC_ATTR_LLC_SDP
);
391 if (sdp_attr
== NULL
) {
393 goto nla_put_failure
;
397 hlist_for_each_entry_safe(sdres
, n
, sdres_list
, node
) {
398 pr_debug("uri: %s, sap: %d\n", sdres
->uri
, sdres
->sap
);
400 uri_attr
= nla_nest_start(msg
, i
++);
401 if (uri_attr
== NULL
) {
403 goto nla_put_failure
;
406 if (nla_put_u8(msg
, NFC_SDP_ATTR_SAP
, sdres
->sap
))
407 goto nla_put_failure
;
409 if (nla_put_string(msg
, NFC_SDP_ATTR_URI
, sdres
->uri
))
410 goto nla_put_failure
;
412 nla_nest_end(msg
, uri_attr
);
414 hlist_del(&sdres
->node
);
416 nfc_llcp_free_sdp_tlv(sdres
);
419 nla_nest_end(msg
, sdp_attr
);
421 genlmsg_end(msg
, hdr
);
423 return genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_ATOMIC
);
426 genlmsg_cancel(msg
, hdr
);
431 nfc_llcp_free_sdp_tlv_list(sdres_list
);
436 int nfc_genl_se_added(struct nfc_dev
*dev
, u32 se_idx
, u16 type
)
441 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
445 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
450 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
451 nla_put_u32(msg
, NFC_ATTR_SE_INDEX
, se_idx
) ||
452 nla_put_u8(msg
, NFC_ATTR_SE_TYPE
, type
))
453 goto nla_put_failure
;
455 genlmsg_end(msg
, hdr
);
457 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
462 genlmsg_cancel(msg
, hdr
);
468 int nfc_genl_se_removed(struct nfc_dev
*dev
, u32 se_idx
)
473 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
477 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
478 NFC_EVENT_SE_REMOVED
);
482 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
483 nla_put_u32(msg
, NFC_ATTR_SE_INDEX
, se_idx
))
484 goto nla_put_failure
;
486 genlmsg_end(msg
, hdr
);
488 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
493 genlmsg_cancel(msg
, hdr
);
499 static int nfc_genl_send_device(struct sk_buff
*msg
, struct nfc_dev
*dev
,
501 struct netlink_callback
*cb
,
506 hdr
= genlmsg_put(msg
, portid
, seq
, &nfc_genl_family
, flags
,
512 genl_dump_check_consistent(cb
, hdr
, &nfc_genl_family
);
514 if (nla_put_string(msg
, NFC_ATTR_DEVICE_NAME
, nfc_device_name(dev
)) ||
515 nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
516 nla_put_u32(msg
, NFC_ATTR_PROTOCOLS
, dev
->supported_protocols
) ||
517 nla_put_u8(msg
, NFC_ATTR_DEVICE_POWERED
, dev
->dev_up
) ||
518 nla_put_u8(msg
, NFC_ATTR_RF_MODE
, dev
->rf_mode
))
519 goto nla_put_failure
;
521 return genlmsg_end(msg
, hdr
);
524 genlmsg_cancel(msg
, hdr
);
528 static int nfc_genl_dump_devices(struct sk_buff
*skb
,
529 struct netlink_callback
*cb
)
531 struct class_dev_iter
*iter
= (struct class_dev_iter
*) cb
->args
[0];
532 struct nfc_dev
*dev
= (struct nfc_dev
*) cb
->args
[1];
533 bool first_call
= false;
537 iter
= kmalloc(sizeof(struct class_dev_iter
), GFP_KERNEL
);
540 cb
->args
[0] = (long) iter
;
543 mutex_lock(&nfc_devlist_mutex
);
545 cb
->seq
= nfc_devlist_generation
;
548 nfc_device_iter_init(iter
);
549 dev
= nfc_device_iter_next(iter
);
555 rc
= nfc_genl_send_device(skb
, dev
, NETLINK_CB(cb
->skb
).portid
,
556 cb
->nlh
->nlmsg_seq
, cb
, NLM_F_MULTI
);
560 dev
= nfc_device_iter_next(iter
);
563 mutex_unlock(&nfc_devlist_mutex
);
565 cb
->args
[1] = (long) dev
;
570 static int nfc_genl_dump_devices_done(struct netlink_callback
*cb
)
572 struct class_dev_iter
*iter
= (struct class_dev_iter
*) cb
->args
[0];
574 nfc_device_iter_exit(iter
);
580 int nfc_genl_dep_link_up_event(struct nfc_dev
*dev
, u32 target_idx
,
581 u8 comm_mode
, u8 rf_mode
)
586 pr_debug("DEP link is up\n");
588 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_ATOMIC
);
592 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0, NFC_CMD_DEP_LINK_UP
);
596 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
597 goto nla_put_failure
;
598 if (rf_mode
== NFC_RF_INITIATOR
&&
599 nla_put_u32(msg
, NFC_ATTR_TARGET_INDEX
, target_idx
))
600 goto nla_put_failure
;
601 if (nla_put_u8(msg
, NFC_ATTR_COMM_MODE
, comm_mode
) ||
602 nla_put_u8(msg
, NFC_ATTR_RF_MODE
, rf_mode
))
603 goto nla_put_failure
;
605 genlmsg_end(msg
, hdr
);
607 dev
->dep_link_up
= true;
609 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_ATOMIC
);
614 genlmsg_cancel(msg
, hdr
);
620 int nfc_genl_dep_link_down_event(struct nfc_dev
*dev
)
625 pr_debug("DEP link is down\n");
627 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_ATOMIC
);
631 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
632 NFC_CMD_DEP_LINK_DOWN
);
636 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
637 goto nla_put_failure
;
639 genlmsg_end(msg
, hdr
);
641 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_ATOMIC
);
646 genlmsg_cancel(msg
, hdr
);
652 static int nfc_genl_get_device(struct sk_buff
*skb
, struct genl_info
*info
)
659 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
662 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
664 dev
= nfc_get_device(idx
);
668 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
674 rc
= nfc_genl_send_device(msg
, dev
, info
->snd_portid
, info
->snd_seq
,
681 return genlmsg_reply(msg
, info
);
690 static int nfc_genl_dev_up(struct sk_buff
*skb
, struct genl_info
*info
)
696 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
699 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
701 dev
= nfc_get_device(idx
);
705 rc
= nfc_dev_up(dev
);
711 static int nfc_genl_dev_down(struct sk_buff
*skb
, struct genl_info
*info
)
717 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
720 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
722 dev
= nfc_get_device(idx
);
726 rc
= nfc_dev_down(dev
);
732 static int nfc_genl_start_poll(struct sk_buff
*skb
, struct genl_info
*info
)
737 u32 im_protocols
= 0, tm_protocols
= 0;
739 pr_debug("Poll start\n");
741 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
742 ((!info
->attrs
[NFC_ATTR_IM_PROTOCOLS
] &&
743 !info
->attrs
[NFC_ATTR_PROTOCOLS
]) &&
744 !info
->attrs
[NFC_ATTR_TM_PROTOCOLS
]))
747 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
749 if (info
->attrs
[NFC_ATTR_TM_PROTOCOLS
])
750 tm_protocols
= nla_get_u32(info
->attrs
[NFC_ATTR_TM_PROTOCOLS
]);
752 if (info
->attrs
[NFC_ATTR_IM_PROTOCOLS
])
753 im_protocols
= nla_get_u32(info
->attrs
[NFC_ATTR_IM_PROTOCOLS
]);
754 else if (info
->attrs
[NFC_ATTR_PROTOCOLS
])
755 im_protocols
= nla_get_u32(info
->attrs
[NFC_ATTR_PROTOCOLS
]);
757 dev
= nfc_get_device(idx
);
761 mutex_lock(&dev
->genl_data
.genl_data_mutex
);
763 rc
= nfc_start_poll(dev
, im_protocols
, tm_protocols
);
765 dev
->genl_data
.poll_req_portid
= info
->snd_portid
;
767 mutex_unlock(&dev
->genl_data
.genl_data_mutex
);
773 static int nfc_genl_stop_poll(struct sk_buff
*skb
, struct genl_info
*info
)
779 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
782 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
784 dev
= nfc_get_device(idx
);
788 device_lock(&dev
->dev
);
791 device_unlock(&dev
->dev
);
795 device_unlock(&dev
->dev
);
797 mutex_lock(&dev
->genl_data
.genl_data_mutex
);
799 if (dev
->genl_data
.poll_req_portid
!= info
->snd_portid
) {
804 rc
= nfc_stop_poll(dev
);
805 dev
->genl_data
.poll_req_portid
= 0;
808 mutex_unlock(&dev
->genl_data
.genl_data_mutex
);
813 static int nfc_genl_dep_link_up(struct sk_buff
*skb
, struct genl_info
*info
)
820 pr_debug("DEP link up\n");
822 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
823 !info
->attrs
[NFC_ATTR_COMM_MODE
])
826 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
827 if (!info
->attrs
[NFC_ATTR_TARGET_INDEX
])
828 tgt_idx
= NFC_TARGET_IDX_ANY
;
830 tgt_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_TARGET_INDEX
]);
832 comm
= nla_get_u8(info
->attrs
[NFC_ATTR_COMM_MODE
]);
834 if (comm
!= NFC_COMM_ACTIVE
&& comm
!= NFC_COMM_PASSIVE
)
837 dev
= nfc_get_device(idx
);
841 rc
= nfc_dep_link_up(dev
, tgt_idx
, comm
);
848 static int nfc_genl_dep_link_down(struct sk_buff
*skb
, struct genl_info
*info
)
854 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
857 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
859 dev
= nfc_get_device(idx
);
863 rc
= nfc_dep_link_down(dev
);
869 static int nfc_genl_send_params(struct sk_buff
*msg
,
870 struct nfc_llcp_local
*local
,
875 hdr
= genlmsg_put(msg
, portid
, seq
, &nfc_genl_family
, 0,
876 NFC_CMD_LLC_GET_PARAMS
);
880 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, local
->dev
->idx
) ||
881 nla_put_u8(msg
, NFC_ATTR_LLC_PARAM_LTO
, local
->lto
) ||
882 nla_put_u8(msg
, NFC_ATTR_LLC_PARAM_RW
, local
->rw
) ||
883 nla_put_u16(msg
, NFC_ATTR_LLC_PARAM_MIUX
, be16_to_cpu(local
->miux
)))
884 goto nla_put_failure
;
886 return genlmsg_end(msg
, hdr
);
890 genlmsg_cancel(msg
, hdr
);
894 static int nfc_genl_llc_get_params(struct sk_buff
*skb
, struct genl_info
*info
)
897 struct nfc_llcp_local
*local
;
899 struct sk_buff
*msg
= NULL
;
902 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
905 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
907 dev
= nfc_get_device(idx
);
911 device_lock(&dev
->dev
);
913 local
= nfc_llcp_find_local(dev
);
919 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
925 rc
= nfc_genl_send_params(msg
, local
, info
->snd_portid
, info
->snd_seq
);
928 device_unlock(&dev
->dev
);
939 return genlmsg_reply(msg
, info
);
942 static int nfc_genl_llc_set_params(struct sk_buff
*skb
, struct genl_info
*info
)
945 struct nfc_llcp_local
*local
;
951 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
952 (!info
->attrs
[NFC_ATTR_LLC_PARAM_LTO
] &&
953 !info
->attrs
[NFC_ATTR_LLC_PARAM_RW
] &&
954 !info
->attrs
[NFC_ATTR_LLC_PARAM_MIUX
]))
957 if (info
->attrs
[NFC_ATTR_LLC_PARAM_RW
]) {
958 rw
= nla_get_u8(info
->attrs
[NFC_ATTR_LLC_PARAM_RW
]);
960 if (rw
> LLCP_MAX_RW
)
964 if (info
->attrs
[NFC_ATTR_LLC_PARAM_MIUX
]) {
965 miux
= nla_get_u16(info
->attrs
[NFC_ATTR_LLC_PARAM_MIUX
]);
967 if (miux
> LLCP_MAX_MIUX
)
971 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
973 dev
= nfc_get_device(idx
);
977 device_lock(&dev
->dev
);
979 local
= nfc_llcp_find_local(dev
);
986 if (info
->attrs
[NFC_ATTR_LLC_PARAM_LTO
]) {
987 if (dev
->dep_link_up
) {
992 local
->lto
= nla_get_u8(info
->attrs
[NFC_ATTR_LLC_PARAM_LTO
]);
995 if (info
->attrs
[NFC_ATTR_LLC_PARAM_RW
])
998 if (info
->attrs
[NFC_ATTR_LLC_PARAM_MIUX
])
999 local
->miux
= cpu_to_be16(miux
);
1002 device_unlock(&dev
->dev
);
1004 nfc_put_device(dev
);
1009 static int nfc_genl_llc_sdreq(struct sk_buff
*skb
, struct genl_info
*info
)
1011 struct nfc_dev
*dev
;
1012 struct nfc_llcp_local
*local
;
1013 struct nlattr
*attr
, *sdp_attrs
[NFC_SDP_ATTR_MAX
+1];
1018 size_t uri_len
, tlvs_len
;
1019 struct hlist_head sdreq_list
;
1020 struct nfc_llcp_sdp_tlv
*sdreq
;
1022 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
1023 !info
->attrs
[NFC_ATTR_LLC_SDP
])
1026 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1028 dev
= nfc_get_device(idx
);
1034 device_lock(&dev
->dev
);
1036 if (dev
->dep_link_up
== false) {
1041 local
= nfc_llcp_find_local(dev
);
1043 nfc_put_device(dev
);
1048 INIT_HLIST_HEAD(&sdreq_list
);
1052 nla_for_each_nested(attr
, info
->attrs
[NFC_ATTR_LLC_SDP
], rem
) {
1053 rc
= nla_parse_nested(sdp_attrs
, NFC_SDP_ATTR_MAX
, attr
,
1054 nfc_sdp_genl_policy
);
1061 if (!sdp_attrs
[NFC_SDP_ATTR_URI
])
1064 uri_len
= nla_len(sdp_attrs
[NFC_SDP_ATTR_URI
]);
1068 uri
= nla_data(sdp_attrs
[NFC_SDP_ATTR_URI
]);
1069 if (uri
== NULL
|| *uri
== 0)
1072 tid
= local
->sdreq_next_tid
++;
1074 sdreq
= nfc_llcp_build_sdreq_tlv(tid
, uri
, uri_len
);
1075 if (sdreq
== NULL
) {
1080 tlvs_len
+= sdreq
->tlv_len
;
1082 hlist_add_head(&sdreq
->node
, &sdreq_list
);
1085 if (hlist_empty(&sdreq_list
)) {
1090 rc
= nfc_llcp_send_snl_sdreq(local
, &sdreq_list
, tlvs_len
);
1092 device_unlock(&dev
->dev
);
1094 nfc_put_device(dev
);
1099 static int nfc_genl_fw_download(struct sk_buff
*skb
, struct genl_info
*info
)
1101 struct nfc_dev
*dev
;
1104 char firmware_name
[NFC_FIRMWARE_NAME_MAXSIZE
+ 1];
1106 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
])
1109 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1111 dev
= nfc_get_device(idx
);
1115 nla_strlcpy(firmware_name
, info
->attrs
[NFC_ATTR_FIRMWARE_NAME
],
1116 sizeof(firmware_name
));
1118 rc
= nfc_fw_download(dev
, firmware_name
);
1120 nfc_put_device(dev
);
1124 int nfc_genl_fw_download_done(struct nfc_dev
*dev
, const char *firmware_name
,
1127 struct sk_buff
*msg
;
1130 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
1134 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
1135 NFC_CMD_FW_DOWNLOAD
);
1139 if (nla_put_string(msg
, NFC_ATTR_FIRMWARE_NAME
, firmware_name
) ||
1140 nla_put_u32(msg
, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS
, result
) ||
1141 nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
))
1142 goto nla_put_failure
;
1144 genlmsg_end(msg
, hdr
);
1146 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
1151 genlmsg_cancel(msg
, hdr
);
1157 static int nfc_genl_enable_se(struct sk_buff
*skb
, struct genl_info
*info
)
1159 struct nfc_dev
*dev
;
1163 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
1164 !info
->attrs
[NFC_ATTR_SE_INDEX
])
1167 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1168 se_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_SE_INDEX
]);
1170 dev
= nfc_get_device(idx
);
1174 rc
= nfc_enable_se(dev
, se_idx
);
1176 nfc_put_device(dev
);
1180 static int nfc_genl_disable_se(struct sk_buff
*skb
, struct genl_info
*info
)
1182 struct nfc_dev
*dev
;
1186 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
1187 !info
->attrs
[NFC_ATTR_SE_INDEX
])
1190 idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1191 se_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_SE_INDEX
]);
1193 dev
= nfc_get_device(idx
);
1197 rc
= nfc_disable_se(dev
, se_idx
);
1199 nfc_put_device(dev
);
1203 static int nfc_genl_send_se(struct sk_buff
*msg
, struct nfc_dev
*dev
,
1204 u32 portid
, u32 seq
,
1205 struct netlink_callback
*cb
,
1209 struct nfc_se
*se
, *n
;
1211 list_for_each_entry_safe(se
, n
, &dev
->secure_elements
, list
) {
1212 hdr
= genlmsg_put(msg
, portid
, seq
, &nfc_genl_family
, flags
,
1215 goto nla_put_failure
;
1218 genl_dump_check_consistent(cb
, hdr
, &nfc_genl_family
);
1220 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, dev
->idx
) ||
1221 nla_put_u32(msg
, NFC_ATTR_SE_INDEX
, se
->idx
) ||
1222 nla_put_u8(msg
, NFC_ATTR_SE_TYPE
, se
->type
))
1223 goto nla_put_failure
;
1225 if (genlmsg_end(msg
, hdr
) < 0)
1226 goto nla_put_failure
;
1232 genlmsg_cancel(msg
, hdr
);
1236 static int nfc_genl_dump_ses(struct sk_buff
*skb
,
1237 struct netlink_callback
*cb
)
1239 struct class_dev_iter
*iter
= (struct class_dev_iter
*) cb
->args
[0];
1240 struct nfc_dev
*dev
= (struct nfc_dev
*) cb
->args
[1];
1241 bool first_call
= false;
1245 iter
= kmalloc(sizeof(struct class_dev_iter
), GFP_KERNEL
);
1248 cb
->args
[0] = (long) iter
;
1251 mutex_lock(&nfc_devlist_mutex
);
1253 cb
->seq
= nfc_devlist_generation
;
1256 nfc_device_iter_init(iter
);
1257 dev
= nfc_device_iter_next(iter
);
1263 rc
= nfc_genl_send_se(skb
, dev
, NETLINK_CB(cb
->skb
).portid
,
1264 cb
->nlh
->nlmsg_seq
, cb
, NLM_F_MULTI
);
1268 dev
= nfc_device_iter_next(iter
);
1271 mutex_unlock(&nfc_devlist_mutex
);
1273 cb
->args
[1] = (long) dev
;
1278 static int nfc_genl_dump_ses_done(struct netlink_callback
*cb
)
1280 struct class_dev_iter
*iter
= (struct class_dev_iter
*) cb
->args
[0];
1282 nfc_device_iter_exit(iter
);
1293 static void se_io_cb(void *context
, u8
*apdu
, size_t apdu_len
, int err
)
1295 struct se_io_ctx
*ctx
= context
;
1296 struct sk_buff
*msg
;
1299 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
1305 hdr
= genlmsg_put(msg
, 0, 0, &nfc_genl_family
, 0,
1310 if (nla_put_u32(msg
, NFC_ATTR_DEVICE_INDEX
, ctx
->dev_idx
) ||
1311 nla_put_u32(msg
, NFC_ATTR_SE_INDEX
, ctx
->se_idx
) ||
1312 nla_put(msg
, NFC_ATTR_SE_APDU
, apdu_len
, apdu
))
1313 goto nla_put_failure
;
1315 genlmsg_end(msg
, hdr
);
1317 genlmsg_multicast(&nfc_genl_family
, msg
, 0, 0, GFP_KERNEL
);
1324 genlmsg_cancel(msg
, hdr
);
1332 static int nfc_genl_se_io(struct sk_buff
*skb
, struct genl_info
*info
)
1334 struct nfc_dev
*dev
;
1335 struct se_io_ctx
*ctx
;
1336 u32 dev_idx
, se_idx
;
1340 if (!info
->attrs
[NFC_ATTR_DEVICE_INDEX
] ||
1341 !info
->attrs
[NFC_ATTR_SE_INDEX
] ||
1342 !info
->attrs
[NFC_ATTR_SE_APDU
])
1345 dev_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_DEVICE_INDEX
]);
1346 se_idx
= nla_get_u32(info
->attrs
[NFC_ATTR_SE_INDEX
]);
1348 dev
= nfc_get_device(dev_idx
);
1352 if (!dev
->ops
|| !dev
->ops
->se_io
)
1355 apdu_len
= nla_len(info
->attrs
[NFC_ATTR_SE_APDU
]);
1359 apdu
= nla_data(info
->attrs
[NFC_ATTR_SE_APDU
]);
1363 ctx
= kzalloc(sizeof(struct se_io_ctx
), GFP_KERNEL
);
1367 ctx
->dev_idx
= dev_idx
;
1368 ctx
->se_idx
= se_idx
;
1370 return dev
->ops
->se_io(dev
, se_idx
, apdu
, apdu_len
, se_io_cb
, ctx
);
1373 static const struct genl_ops nfc_genl_ops
[] = {
1375 .cmd
= NFC_CMD_GET_DEVICE
,
1376 .doit
= nfc_genl_get_device
,
1377 .dumpit
= nfc_genl_dump_devices
,
1378 .done
= nfc_genl_dump_devices_done
,
1379 .policy
= nfc_genl_policy
,
1382 .cmd
= NFC_CMD_DEV_UP
,
1383 .doit
= nfc_genl_dev_up
,
1384 .policy
= nfc_genl_policy
,
1387 .cmd
= NFC_CMD_DEV_DOWN
,
1388 .doit
= nfc_genl_dev_down
,
1389 .policy
= nfc_genl_policy
,
1392 .cmd
= NFC_CMD_START_POLL
,
1393 .doit
= nfc_genl_start_poll
,
1394 .policy
= nfc_genl_policy
,
1397 .cmd
= NFC_CMD_STOP_POLL
,
1398 .doit
= nfc_genl_stop_poll
,
1399 .policy
= nfc_genl_policy
,
1402 .cmd
= NFC_CMD_DEP_LINK_UP
,
1403 .doit
= nfc_genl_dep_link_up
,
1404 .policy
= nfc_genl_policy
,
1407 .cmd
= NFC_CMD_DEP_LINK_DOWN
,
1408 .doit
= nfc_genl_dep_link_down
,
1409 .policy
= nfc_genl_policy
,
1412 .cmd
= NFC_CMD_GET_TARGET
,
1413 .dumpit
= nfc_genl_dump_targets
,
1414 .done
= nfc_genl_dump_targets_done
,
1415 .policy
= nfc_genl_policy
,
1418 .cmd
= NFC_CMD_LLC_GET_PARAMS
,
1419 .doit
= nfc_genl_llc_get_params
,
1420 .policy
= nfc_genl_policy
,
1423 .cmd
= NFC_CMD_LLC_SET_PARAMS
,
1424 .doit
= nfc_genl_llc_set_params
,
1425 .policy
= nfc_genl_policy
,
1428 .cmd
= NFC_CMD_LLC_SDREQ
,
1429 .doit
= nfc_genl_llc_sdreq
,
1430 .policy
= nfc_genl_policy
,
1433 .cmd
= NFC_CMD_FW_DOWNLOAD
,
1434 .doit
= nfc_genl_fw_download
,
1435 .policy
= nfc_genl_policy
,
1438 .cmd
= NFC_CMD_ENABLE_SE
,
1439 .doit
= nfc_genl_enable_se
,
1440 .policy
= nfc_genl_policy
,
1443 .cmd
= NFC_CMD_DISABLE_SE
,
1444 .doit
= nfc_genl_disable_se
,
1445 .policy
= nfc_genl_policy
,
1448 .cmd
= NFC_CMD_GET_SE
,
1449 .dumpit
= nfc_genl_dump_ses
,
1450 .done
= nfc_genl_dump_ses_done
,
1451 .policy
= nfc_genl_policy
,
1454 .cmd
= NFC_CMD_SE_IO
,
1455 .doit
= nfc_genl_se_io
,
1456 .policy
= nfc_genl_policy
,
1461 struct urelease_work
{
1462 struct work_struct w
;
1466 static void nfc_urelease_event_work(struct work_struct
*work
)
1468 struct urelease_work
*w
= container_of(work
, struct urelease_work
, w
);
1469 struct class_dev_iter iter
;
1470 struct nfc_dev
*dev
;
1472 pr_debug("portid %d\n", w
->portid
);
1474 mutex_lock(&nfc_devlist_mutex
);
1476 nfc_device_iter_init(&iter
);
1477 dev
= nfc_device_iter_next(&iter
);
1480 mutex_lock(&dev
->genl_data
.genl_data_mutex
);
1482 if (dev
->genl_data
.poll_req_portid
== w
->portid
) {
1484 dev
->genl_data
.poll_req_portid
= 0;
1487 mutex_unlock(&dev
->genl_data
.genl_data_mutex
);
1489 dev
= nfc_device_iter_next(&iter
);
1492 nfc_device_iter_exit(&iter
);
1494 mutex_unlock(&nfc_devlist_mutex
);
1499 static int nfc_genl_rcv_nl_event(struct notifier_block
*this,
1500 unsigned long event
, void *ptr
)
1502 struct netlink_notify
*n
= ptr
;
1503 struct urelease_work
*w
;
1505 if (event
!= NETLINK_URELEASE
|| n
->protocol
!= NETLINK_GENERIC
)
1508 pr_debug("NETLINK_URELEASE event from id %d\n", n
->portid
);
1510 w
= kmalloc(sizeof(*w
), GFP_ATOMIC
);
1512 INIT_WORK((struct work_struct
*) w
, nfc_urelease_event_work
);
1513 w
->portid
= n
->portid
;
1514 schedule_work((struct work_struct
*) w
);
1521 void nfc_genl_data_init(struct nfc_genl_data
*genl_data
)
1523 genl_data
->poll_req_portid
= 0;
1524 mutex_init(&genl_data
->genl_data_mutex
);
1527 void nfc_genl_data_exit(struct nfc_genl_data
*genl_data
)
1529 mutex_destroy(&genl_data
->genl_data_mutex
);
1532 static struct notifier_block nl_notifier
= {
1533 .notifier_call
= nfc_genl_rcv_nl_event
,
1537 * nfc_genl_init() - Initialize netlink interface
1539 * This initialization function registers the nfc netlink family.
1541 int __init
nfc_genl_init(void)
1545 rc
= genl_register_family_with_ops_groups(&nfc_genl_family
,
1551 netlink_register_notifier(&nl_notifier
);
1557 * nfc_genl_exit() - Deinitialize netlink interface
1559 * This exit function unregisters the nfc netlink family.
1561 void nfc_genl_exit(void)
1563 netlink_unregister_notifier(&nl_notifier
);
1564 genl_unregister_family(&nfc_genl_family
);