1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2011 Instituto Nokia de Tecnologia
6 * Lauro Ramos Venancio <lauro.venancio@openbossa.org>
7 * Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
9 * Vendor commands implementation based on net/wireless/nl80211.c
12 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
13 * Copyright 2013-2014 Intel Mobile Communications GmbH
16 #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
18 #include <net/genetlink.h>
19 #include <linux/nfc.h>
20 #include <linux/slab.h>
25 static const struct genl_multicast_group nfc_genl_mcgrps[] = {
26 { .name = NFC_GENL_MCAST_EVENT_NAME, },
29 static struct genl_family nfc_genl_family;
30 static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = {
31 [NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 },
32 [NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING,
33 .len = NFC_DEVICE_NAME_MAXSIZE },
34 [NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 },
35 [NFC_ATTR_TARGET_INDEX] = { .type = NLA_U32 },
36 [NFC_ATTR_COMM_MODE] = { .type = NLA_U8 },
37 [NFC_ATTR_RF_MODE] = { .type = NLA_U8 },
38 [NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 },
39 [NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 },
40 [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 },
41 [NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 },
42 [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 },
43 [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 },
44 [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED },
45 [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING,
46 .len = NFC_FIRMWARE_NAME_MAXSIZE },
47 [NFC_ATTR_SE_INDEX] = { .type = NLA_U32 },
48 [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY },
49 [NFC_ATTR_VENDOR_ID] = { .type = NLA_U32 },
50 [NFC_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
51 [NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
55 static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = {
56 [NFC_SDP_ATTR_URI] = { .type = NLA_STRING,
58 [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 },
61 static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
62 struct netlink_callback *cb, int flags)
66 hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
67 &nfc_genl_family, flags, NFC_CMD_GET_TARGET);
71 genl_dump_check_consistent(cb, hdr);
73 if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) ||
74 nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) ||
75 nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) ||
76 nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res))
78 if (target->nfcid1_len > 0 &&
79 nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len,
82 if (target->sensb_res_len > 0 &&
83 nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len,
86 if (target->sensf_res_len > 0 &&
87 nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len,
91 if (target->is_iso15693) {
92 if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID,
93 target->iso15693_dsfid) ||
94 nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID,
95 sizeof(target->iso15693_uid), target->iso15693_uid))
99 genlmsg_end(msg, hdr);
103 genlmsg_cancel(msg, hdr);
107 static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb)
109 const struct genl_dumpit_info *info = genl_dumpit_info(cb);
113 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
114 return ERR_PTR(-EINVAL);
116 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
118 dev = nfc_get_device(idx);
120 return ERR_PTR(-ENODEV);
125 static int nfc_genl_dump_targets(struct sk_buff *skb,
126 struct netlink_callback *cb)
129 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
133 dev = __get_device_from_cb(cb);
137 cb->args[1] = (long) dev;
140 device_lock(&dev->dev);
142 cb->seq = dev->targets_generation;
144 while (i < dev->n_targets) {
145 rc = nfc_genl_send_target(skb, &dev->targets[i], cb,
153 device_unlock(&dev->dev);
160 static int nfc_genl_dump_targets_done(struct netlink_callback *cb)
162 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
170 int nfc_genl_targets_found(struct nfc_dev *dev)
175 dev->genl_data.poll_req_portid = 0;
177 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
181 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
182 NFC_EVENT_TARGETS_FOUND);
186 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
187 goto nla_put_failure;
189 genlmsg_end(msg, hdr);
191 return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
199 int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx)
204 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
208 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
209 NFC_EVENT_TARGET_LOST);
213 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
214 nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
215 goto nla_put_failure;
217 genlmsg_end(msg, hdr);
219 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
229 int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol)
234 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
238 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
239 NFC_EVENT_TM_ACTIVATED);
243 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
244 goto nla_put_failure;
245 if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol))
246 goto nla_put_failure;
248 genlmsg_end(msg, hdr);
250 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
260 int nfc_genl_tm_deactivated(struct nfc_dev *dev)
265 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
269 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
270 NFC_EVENT_TM_DEACTIVATED);
274 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
275 goto nla_put_failure;
277 genlmsg_end(msg, hdr);
279 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
289 static int nfc_genl_setup_device_added(struct nfc_dev *dev, struct sk_buff *msg)
291 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
292 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
293 nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
294 nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) ||
295 nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode))
300 int nfc_genl_device_added(struct nfc_dev *dev)
305 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
309 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
310 NFC_EVENT_DEVICE_ADDED);
314 if (nfc_genl_setup_device_added(dev, msg))
315 goto nla_put_failure;
317 genlmsg_end(msg, hdr);
319 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
329 int nfc_genl_device_removed(struct nfc_dev *dev)
334 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
338 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
339 NFC_EVENT_DEVICE_REMOVED);
343 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
344 goto nla_put_failure;
346 genlmsg_end(msg, hdr);
348 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
358 int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list)
361 struct nlattr *sdp_attr, *uri_attr;
362 struct nfc_llcp_sdp_tlv *sdres;
363 struct hlist_node *n;
368 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
372 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
373 NFC_EVENT_LLC_SDRES);
377 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
378 goto nla_put_failure;
380 sdp_attr = nla_nest_start_noflag(msg, NFC_ATTR_LLC_SDP);
381 if (sdp_attr == NULL) {
383 goto nla_put_failure;
387 hlist_for_each_entry_safe(sdres, n, sdres_list, node) {
388 pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap);
390 uri_attr = nla_nest_start_noflag(msg, i++);
391 if (uri_attr == NULL) {
393 goto nla_put_failure;
396 if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap))
397 goto nla_put_failure;
399 if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri))
400 goto nla_put_failure;
402 nla_nest_end(msg, uri_attr);
404 hlist_del(&sdres->node);
406 nfc_llcp_free_sdp_tlv(sdres);
409 nla_nest_end(msg, sdp_attr);
411 genlmsg_end(msg, hdr);
413 return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
419 nfc_llcp_free_sdp_tlv_list(sdres_list);
424 int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type)
429 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
433 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
438 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
439 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
440 nla_put_u8(msg, NFC_ATTR_SE_TYPE, type))
441 goto nla_put_failure;
443 genlmsg_end(msg, hdr);
445 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
455 int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx)
460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
464 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
465 NFC_EVENT_SE_REMOVED);
469 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
470 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx))
471 goto nla_put_failure;
473 genlmsg_end(msg, hdr);
475 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
485 int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
486 struct nfc_evt_transaction *evt_transaction)
492 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
496 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
497 NFC_EVENT_SE_TRANSACTION);
501 se = nfc_find_se(dev, se_idx);
505 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
506 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
507 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) ||
508 nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len,
509 evt_transaction->aid) ||
510 nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len,
511 evt_transaction->params))
512 goto nla_put_failure;
514 /* evt_transaction is no more used */
515 devm_kfree(&dev->dev, evt_transaction);
517 genlmsg_end(msg, hdr);
519 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
525 /* evt_transaction is no more used */
526 devm_kfree(&dev->dev, evt_transaction);
531 int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx)
533 const struct nfc_se *se;
537 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
541 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
542 NFC_EVENT_SE_CONNECTIVITY);
546 se = nfc_find_se(dev, se_idx);
550 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
551 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
552 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
553 goto nla_put_failure;
555 genlmsg_end(msg, hdr);
557 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
567 static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
569 struct netlink_callback *cb,
574 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
580 genl_dump_check_consistent(cb, hdr);
582 if (nfc_genl_setup_device_added(dev, msg))
583 goto nla_put_failure;
585 genlmsg_end(msg, hdr);
589 genlmsg_cancel(msg, hdr);
593 static int nfc_genl_dump_devices(struct sk_buff *skb,
594 struct netlink_callback *cb)
596 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
597 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
598 bool first_call = false;
602 iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
605 cb->args[0] = (long) iter;
608 mutex_lock(&nfc_devlist_mutex);
610 cb->seq = nfc_devlist_generation;
613 nfc_device_iter_init(iter);
614 dev = nfc_device_iter_next(iter);
620 rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid,
621 cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
625 dev = nfc_device_iter_next(iter);
628 mutex_unlock(&nfc_devlist_mutex);
630 cb->args[1] = (long) dev;
635 static int nfc_genl_dump_devices_done(struct netlink_callback *cb)
637 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
639 nfc_device_iter_exit(iter);
645 int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
646 u8 comm_mode, u8 rf_mode)
651 pr_debug("DEP link is up\n");
653 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
657 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP);
661 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
662 goto nla_put_failure;
663 if (rf_mode == NFC_RF_INITIATOR &&
664 nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
665 goto nla_put_failure;
666 if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) ||
667 nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode))
668 goto nla_put_failure;
670 genlmsg_end(msg, hdr);
672 dev->dep_link_up = true;
674 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
684 int nfc_genl_dep_link_down_event(struct nfc_dev *dev)
689 pr_debug("DEP link is down\n");
691 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
695 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
696 NFC_CMD_DEP_LINK_DOWN);
700 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
701 goto nla_put_failure;
703 genlmsg_end(msg, hdr);
705 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
715 static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info)
722 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
725 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
727 dev = nfc_get_device(idx);
731 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
737 rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq,
744 return genlmsg_reply(msg, info);
753 static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info)
759 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
762 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
764 dev = nfc_get_device(idx);
768 rc = nfc_dev_up(dev);
774 static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info)
780 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
783 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
785 dev = nfc_get_device(idx);
789 rc = nfc_dev_down(dev);
795 static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info)
800 u32 im_protocols = 0, tm_protocols = 0;
802 pr_debug("Poll start\n");
804 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
805 ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] &&
806 !info->attrs[NFC_ATTR_PROTOCOLS]) &&
807 !info->attrs[NFC_ATTR_TM_PROTOCOLS]))
810 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
812 if (info->attrs[NFC_ATTR_TM_PROTOCOLS])
813 tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]);
815 if (info->attrs[NFC_ATTR_IM_PROTOCOLS])
816 im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]);
817 else if (info->attrs[NFC_ATTR_PROTOCOLS])
818 im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
820 dev = nfc_get_device(idx);
824 mutex_lock(&dev->genl_data.genl_data_mutex);
826 rc = nfc_start_poll(dev, im_protocols, tm_protocols);
828 dev->genl_data.poll_req_portid = info->snd_portid;
830 mutex_unlock(&dev->genl_data.genl_data_mutex);
836 static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
842 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
845 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
847 dev = nfc_get_device(idx);
851 device_lock(&dev->dev);
854 device_unlock(&dev->dev);
859 device_unlock(&dev->dev);
861 mutex_lock(&dev->genl_data.genl_data_mutex);
863 if (dev->genl_data.poll_req_portid != info->snd_portid) {
868 rc = nfc_stop_poll(dev);
869 dev->genl_data.poll_req_portid = 0;
872 mutex_unlock(&dev->genl_data.genl_data_mutex);
877 static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info)
880 u32 device_idx, target_idx, protocol;
883 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
884 !info->attrs[NFC_ATTR_TARGET_INDEX] ||
885 !info->attrs[NFC_ATTR_PROTOCOLS])
888 device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
890 dev = nfc_get_device(device_idx);
894 target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
895 protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
897 nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
898 rc = nfc_activate_target(dev, target_idx, protocol);
904 static int nfc_genl_deactivate_target(struct sk_buff *skb,
905 struct genl_info *info)
908 u32 device_idx, target_idx;
911 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
912 !info->attrs[NFC_ATTR_TARGET_INDEX])
915 device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
917 dev = nfc_get_device(device_idx);
921 target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
923 rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
929 static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info)
936 pr_debug("DEP link up\n");
938 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
939 !info->attrs[NFC_ATTR_COMM_MODE])
942 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
943 if (!info->attrs[NFC_ATTR_TARGET_INDEX])
944 tgt_idx = NFC_TARGET_IDX_ANY;
946 tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
948 comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]);
950 if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE)
953 dev = nfc_get_device(idx);
957 rc = nfc_dep_link_up(dev, tgt_idx, comm);
964 static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info)
970 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
971 !info->attrs[NFC_ATTR_TARGET_INDEX])
974 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
976 dev = nfc_get_device(idx);
980 rc = nfc_dep_link_down(dev);
986 static int nfc_genl_send_params(struct sk_buff *msg,
987 struct nfc_llcp_local *local,
992 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0,
993 NFC_CMD_LLC_GET_PARAMS);
997 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) ||
998 nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) ||
999 nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) ||
1000 nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux)))
1001 goto nla_put_failure;
1003 genlmsg_end(msg, hdr);
1007 genlmsg_cancel(msg, hdr);
1011 static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info)
1013 struct nfc_dev *dev;
1014 struct nfc_llcp_local *local;
1016 struct sk_buff *msg = NULL;
1019 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1020 !info->attrs[NFC_ATTR_FIRMWARE_NAME])
1023 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1025 dev = nfc_get_device(idx);
1029 device_lock(&dev->dev);
1031 local = nfc_llcp_find_local(dev);
1037 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1043 rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq);
1046 device_unlock(&dev->dev);
1048 nfc_put_device(dev);
1057 return genlmsg_reply(msg, info);
1060 static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
1062 struct nfc_dev *dev;
1063 struct nfc_llcp_local *local;
1069 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1070 (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] &&
1071 !info->attrs[NFC_ATTR_LLC_PARAM_RW] &&
1072 !info->attrs[NFC_ATTR_LLC_PARAM_MIUX]))
1075 if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) {
1076 rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]);
1078 if (rw > LLCP_MAX_RW)
1082 if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) {
1083 miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]);
1085 if (miux > LLCP_MAX_MIUX)
1089 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1091 dev = nfc_get_device(idx);
1095 device_lock(&dev->dev);
1097 local = nfc_llcp_find_local(dev);
1103 if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) {
1104 if (dev->dep_link_up) {
1109 local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]);
1112 if (info->attrs[NFC_ATTR_LLC_PARAM_RW])
1115 if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX])
1116 local->miux = cpu_to_be16(miux);
1119 device_unlock(&dev->dev);
1121 nfc_put_device(dev);
1126 static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
1128 struct nfc_dev *dev;
1129 struct nfc_llcp_local *local;
1130 struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1];
1135 size_t uri_len, tlvs_len;
1136 struct hlist_head sdreq_list;
1137 struct nfc_llcp_sdp_tlv *sdreq;
1139 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1140 !info->attrs[NFC_ATTR_LLC_SDP])
1143 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1145 dev = nfc_get_device(idx);
1149 device_lock(&dev->dev);
1151 if (dev->dep_link_up == false) {
1156 local = nfc_llcp_find_local(dev);
1162 INIT_HLIST_HEAD(&sdreq_list);
1166 nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) {
1167 rc = nla_parse_nested_deprecated(sdp_attrs, NFC_SDP_ATTR_MAX,
1168 attr, nfc_sdp_genl_policy,
1176 if (!sdp_attrs[NFC_SDP_ATTR_URI])
1179 uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]);
1183 uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]);
1184 if (uri == NULL || *uri == 0)
1187 tid = local->sdreq_next_tid++;
1189 sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len);
1190 if (sdreq == NULL) {
1195 tlvs_len += sdreq->tlv_len;
1197 hlist_add_head(&sdreq->node, &sdreq_list);
1200 if (hlist_empty(&sdreq_list)) {
1205 rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len);
1207 device_unlock(&dev->dev);
1209 nfc_put_device(dev);
1214 static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info)
1216 struct nfc_dev *dev;
1219 char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
1221 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_FIRMWARE_NAME])
1224 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1226 dev = nfc_get_device(idx);
1230 nla_strscpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME],
1231 sizeof(firmware_name));
1233 rc = nfc_fw_download(dev, firmware_name);
1235 nfc_put_device(dev);
1239 int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
1242 struct sk_buff *msg;
1245 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1249 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
1250 NFC_CMD_FW_DOWNLOAD);
1254 if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) ||
1255 nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) ||
1256 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
1257 goto nla_put_failure;
1259 genlmsg_end(msg, hdr);
1261 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
1271 static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info)
1273 struct nfc_dev *dev;
1277 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1278 !info->attrs[NFC_ATTR_SE_INDEX])
1281 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1282 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1284 dev = nfc_get_device(idx);
1288 rc = nfc_enable_se(dev, se_idx);
1290 nfc_put_device(dev);
1294 static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info)
1296 struct nfc_dev *dev;
1300 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1301 !info->attrs[NFC_ATTR_SE_INDEX])
1304 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1305 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1307 dev = nfc_get_device(idx);
1311 rc = nfc_disable_se(dev, se_idx);
1313 nfc_put_device(dev);
1317 static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev,
1318 u32 portid, u32 seq,
1319 struct netlink_callback *cb,
1323 struct nfc_se *se, *n;
1325 list_for_each_entry_safe(se, n, &dev->secure_elements, list) {
1326 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
1329 goto nla_put_failure;
1332 genl_dump_check_consistent(cb, hdr);
1334 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
1335 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) ||
1336 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
1337 goto nla_put_failure;
1339 genlmsg_end(msg, hdr);
1345 genlmsg_cancel(msg, hdr);
1349 static int nfc_genl_dump_ses(struct sk_buff *skb,
1350 struct netlink_callback *cb)
1352 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
1353 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
1354 bool first_call = false;
1358 iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
1361 cb->args[0] = (long) iter;
1364 mutex_lock(&nfc_devlist_mutex);
1366 cb->seq = nfc_devlist_generation;
1369 nfc_device_iter_init(iter);
1370 dev = nfc_device_iter_next(iter);
1376 rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid,
1377 cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
1381 dev = nfc_device_iter_next(iter);
1384 mutex_unlock(&nfc_devlist_mutex);
1386 cb->args[1] = (long) dev;
1391 static int nfc_genl_dump_ses_done(struct netlink_callback *cb)
1393 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
1396 nfc_device_iter_exit(iter);
1403 static int nfc_se_io(struct nfc_dev *dev, u32 se_idx,
1404 u8 *apdu, size_t apdu_length,
1405 se_io_cb_t cb, void *cb_context)
1410 pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
1412 device_lock(&dev->dev);
1414 if (!device_is_registered(&dev->dev)) {
1424 if (!dev->ops->se_io) {
1429 se = nfc_find_se(dev, se_idx);
1435 if (se->state != NFC_SE_ENABLED) {
1440 rc = dev->ops->se_io(dev, se_idx, apdu,
1441 apdu_length, cb, cb_context);
1444 device_unlock(&dev->dev);
1453 static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err)
1455 struct se_io_ctx *ctx = context;
1456 struct sk_buff *msg;
1459 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1465 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
1470 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) ||
1471 nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) ||
1472 nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu))
1473 goto nla_put_failure;
1475 genlmsg_end(msg, hdr);
1477 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
1491 static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info)
1493 struct nfc_dev *dev;
1494 struct se_io_ctx *ctx;
1495 u32 dev_idx, se_idx;
1499 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1500 !info->attrs[NFC_ATTR_SE_INDEX] ||
1501 !info->attrs[NFC_ATTR_SE_APDU])
1504 dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1505 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1507 dev = nfc_get_device(dev_idx);
1511 if (!dev->ops || !dev->ops->se_io)
1514 apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]);
1518 apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]);
1522 ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL);
1526 ctx->dev_idx = dev_idx;
1527 ctx->se_idx = se_idx;
1529 return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
1532 static int nfc_genl_vendor_cmd(struct sk_buff *skb,
1533 struct genl_info *info)
1535 struct nfc_dev *dev;
1536 const struct nfc_vendor_cmd *cmd;
1537 u32 dev_idx, vid, subcmd;
1542 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1543 !info->attrs[NFC_ATTR_VENDOR_ID] ||
1544 !info->attrs[NFC_ATTR_VENDOR_SUBCMD])
1547 dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1548 vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]);
1549 subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]);
1551 dev = nfc_get_device(dev_idx);
1552 if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds)
1555 if (info->attrs[NFC_ATTR_VENDOR_DATA]) {
1556 data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);
1557 data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]);
1565 for (i = 0; i < dev->n_vendor_cmds; i++) {
1566 cmd = &dev->vendor_cmds[i];
1568 if (cmd->vendor_id != vid || cmd->subcmd != subcmd)
1571 dev->cur_cmd_info = info;
1572 err = cmd->doit(dev, data, data_len);
1573 dev->cur_cmd_info = NULL;
1580 /* message building helper */
1581 static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1584 /* since there is no private header just add the generic one */
1585 return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd);
1588 static struct sk_buff *
1589 __nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen,
1590 u32 portid, u32 seq,
1591 enum nfc_attrs attr,
1592 u32 oui, u32 subcmd, gfp_t gfp)
1594 struct sk_buff *skb;
1597 skb = nlmsg_new(approxlen + 100, gfp);
1601 hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR);
1607 if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx))
1608 goto nla_put_failure;
1609 if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui))
1610 goto nla_put_failure;
1611 if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd))
1612 goto nla_put_failure;
1614 ((void **)skb->cb)[0] = dev;
1615 ((void **)skb->cb)[1] = hdr;
1624 struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev,
1625 enum nfc_attrs attr,
1626 u32 oui, u32 subcmd,
1629 if (WARN_ON(!dev->cur_cmd_info))
1632 return __nfc_alloc_vendor_cmd_skb(dev, approxlen,
1633 dev->cur_cmd_info->snd_portid,
1634 dev->cur_cmd_info->snd_seq, attr,
1635 oui, subcmd, GFP_KERNEL);
1637 EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb);
1639 int nfc_vendor_cmd_reply(struct sk_buff *skb)
1641 struct nfc_dev *dev = ((void **)skb->cb)[0];
1642 void *hdr = ((void **)skb->cb)[1];
1644 /* clear CB data for netlink core to own from now on */
1645 memset(skb->cb, 0, sizeof(skb->cb));
1647 if (WARN_ON(!dev->cur_cmd_info)) {
1652 genlmsg_end(skb, hdr);
1653 return genlmsg_reply(skb, dev->cur_cmd_info);
1655 EXPORT_SYMBOL(nfc_vendor_cmd_reply);
1657 static const struct genl_ops nfc_genl_ops[] = {
1659 .cmd = NFC_CMD_GET_DEVICE,
1660 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1661 .doit = nfc_genl_get_device,
1662 .dumpit = nfc_genl_dump_devices,
1663 .done = nfc_genl_dump_devices_done,
1666 .cmd = NFC_CMD_DEV_UP,
1667 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1668 .doit = nfc_genl_dev_up,
1671 .cmd = NFC_CMD_DEV_DOWN,
1672 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1673 .doit = nfc_genl_dev_down,
1676 .cmd = NFC_CMD_START_POLL,
1677 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1678 .doit = nfc_genl_start_poll,
1681 .cmd = NFC_CMD_STOP_POLL,
1682 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1683 .doit = nfc_genl_stop_poll,
1686 .cmd = NFC_CMD_DEP_LINK_UP,
1687 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1688 .doit = nfc_genl_dep_link_up,
1691 .cmd = NFC_CMD_DEP_LINK_DOWN,
1692 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1693 .doit = nfc_genl_dep_link_down,
1696 .cmd = NFC_CMD_GET_TARGET,
1697 .validate = GENL_DONT_VALIDATE_STRICT |
1698 GENL_DONT_VALIDATE_DUMP_STRICT,
1699 .dumpit = nfc_genl_dump_targets,
1700 .done = nfc_genl_dump_targets_done,
1703 .cmd = NFC_CMD_LLC_GET_PARAMS,
1704 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1705 .doit = nfc_genl_llc_get_params,
1708 .cmd = NFC_CMD_LLC_SET_PARAMS,
1709 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1710 .doit = nfc_genl_llc_set_params,
1713 .cmd = NFC_CMD_LLC_SDREQ,
1714 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1715 .doit = nfc_genl_llc_sdreq,
1718 .cmd = NFC_CMD_FW_DOWNLOAD,
1719 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1720 .doit = nfc_genl_fw_download,
1723 .cmd = NFC_CMD_ENABLE_SE,
1724 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1725 .doit = nfc_genl_enable_se,
1728 .cmd = NFC_CMD_DISABLE_SE,
1729 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1730 .doit = nfc_genl_disable_se,
1733 .cmd = NFC_CMD_GET_SE,
1734 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1735 .dumpit = nfc_genl_dump_ses,
1736 .done = nfc_genl_dump_ses_done,
1739 .cmd = NFC_CMD_SE_IO,
1740 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1741 .doit = nfc_genl_se_io,
1744 .cmd = NFC_CMD_ACTIVATE_TARGET,
1745 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1746 .doit = nfc_genl_activate_target,
1749 .cmd = NFC_CMD_VENDOR,
1750 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1751 .doit = nfc_genl_vendor_cmd,
1754 .cmd = NFC_CMD_DEACTIVATE_TARGET,
1755 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1756 .doit = nfc_genl_deactivate_target,
1760 static struct genl_family nfc_genl_family __ro_after_init = {
1762 .name = NFC_GENL_NAME,
1763 .version = NFC_GENL_VERSION,
1764 .maxattr = NFC_ATTR_MAX,
1765 .policy = nfc_genl_policy,
1766 .module = THIS_MODULE,
1767 .ops = nfc_genl_ops,
1768 .n_ops = ARRAY_SIZE(nfc_genl_ops),
1769 .mcgrps = nfc_genl_mcgrps,
1770 .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps),
1774 struct urelease_work {
1775 struct work_struct w;
1779 static void nfc_urelease_event_work(struct work_struct *work)
1781 struct urelease_work *w = container_of(work, struct urelease_work, w);
1782 struct class_dev_iter iter;
1783 struct nfc_dev *dev;
1785 pr_debug("portid %d\n", w->portid);
1787 mutex_lock(&nfc_devlist_mutex);
1789 nfc_device_iter_init(&iter);
1790 dev = nfc_device_iter_next(&iter);
1793 mutex_lock(&dev->genl_data.genl_data_mutex);
1795 if (dev->genl_data.poll_req_portid == w->portid) {
1797 dev->genl_data.poll_req_portid = 0;
1800 mutex_unlock(&dev->genl_data.genl_data_mutex);
1802 dev = nfc_device_iter_next(&iter);
1805 nfc_device_iter_exit(&iter);
1807 mutex_unlock(&nfc_devlist_mutex);
1812 static int nfc_genl_rcv_nl_event(struct notifier_block *this,
1813 unsigned long event, void *ptr)
1815 struct netlink_notify *n = ptr;
1816 struct urelease_work *w;
1818 if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC)
1821 pr_debug("NETLINK_URELEASE event from id %d\n", n->portid);
1823 w = kmalloc(sizeof(*w), GFP_ATOMIC);
1825 INIT_WORK(&w->w, nfc_urelease_event_work);
1826 w->portid = n->portid;
1827 schedule_work(&w->w);
1834 void nfc_genl_data_init(struct nfc_genl_data *genl_data)
1836 genl_data->poll_req_portid = 0;
1837 mutex_init(&genl_data->genl_data_mutex);
1840 void nfc_genl_data_exit(struct nfc_genl_data *genl_data)
1842 mutex_destroy(&genl_data->genl_data_mutex);
1845 static struct notifier_block nl_notifier = {
1846 .notifier_call = nfc_genl_rcv_nl_event,
1850 * nfc_genl_init() - Initialize netlink interface
1852 * This initialization function registers the nfc netlink family.
1854 int __init nfc_genl_init(void)
1858 rc = genl_register_family(&nfc_genl_family);
1862 netlink_register_notifier(&nl_notifier);
1868 * nfc_genl_exit() - Deinitialize netlink interface
1870 * This exit function unregisters the nfc netlink family.
1872 void nfc_genl_exit(void)
1874 netlink_unregister_notifier(&nl_notifier);
1875 genl_unregister_family(&nfc_genl_family);