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_COMM_MODE] = { .type = NLA_U8 },
36 [NFC_ATTR_RF_MODE] = { .type = NLA_U8 },
37 [NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 },
38 [NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 },
39 [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 },
40 [NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 },
41 [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 },
42 [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 },
43 [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED },
44 [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING,
45 .len = NFC_FIRMWARE_NAME_MAXSIZE },
46 [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY },
47 [NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
51 static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = {
52 [NFC_SDP_ATTR_URI] = { .type = NLA_STRING,
54 [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 },
57 static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
58 struct netlink_callback *cb, int flags)
62 hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
63 &nfc_genl_family, flags, NFC_CMD_GET_TARGET);
67 genl_dump_check_consistent(cb, hdr);
69 if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) ||
70 nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) ||
71 nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) ||
72 nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res))
74 if (target->nfcid1_len > 0 &&
75 nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len,
78 if (target->sensb_res_len > 0 &&
79 nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len,
82 if (target->sensf_res_len > 0 &&
83 nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len,
87 if (target->is_iso15693) {
88 if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID,
89 target->iso15693_dsfid) ||
90 nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID,
91 sizeof(target->iso15693_uid), target->iso15693_uid))
95 genlmsg_end(msg, hdr);
99 genlmsg_cancel(msg, hdr);
103 static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb)
105 struct nlattr **attrbuf = genl_family_attrbuf(&nfc_genl_family);
110 rc = nlmsg_parse_deprecated(cb->nlh,
111 GENL_HDRLEN + nfc_genl_family.hdrsize,
112 attrbuf, nfc_genl_family.maxattr,
113 nfc_genl_policy, NULL);
117 if (!attrbuf[NFC_ATTR_DEVICE_INDEX])
118 return ERR_PTR(-EINVAL);
120 idx = nla_get_u32(attrbuf[NFC_ATTR_DEVICE_INDEX]);
122 dev = nfc_get_device(idx);
124 return ERR_PTR(-ENODEV);
129 static int nfc_genl_dump_targets(struct sk_buff *skb,
130 struct netlink_callback *cb)
133 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
137 dev = __get_device_from_cb(cb);
141 cb->args[1] = (long) dev;
144 device_lock(&dev->dev);
146 cb->seq = dev->targets_generation;
148 while (i < dev->n_targets) {
149 rc = nfc_genl_send_target(skb, &dev->targets[i], cb,
157 device_unlock(&dev->dev);
164 static int nfc_genl_dump_targets_done(struct netlink_callback *cb)
166 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
174 int nfc_genl_targets_found(struct nfc_dev *dev)
179 dev->genl_data.poll_req_portid = 0;
181 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
185 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
186 NFC_EVENT_TARGETS_FOUND);
190 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
191 goto nla_put_failure;
193 genlmsg_end(msg, hdr);
195 return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
203 int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx)
208 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
212 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
213 NFC_EVENT_TARGET_LOST);
217 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
218 nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
219 goto nla_put_failure;
221 genlmsg_end(msg, hdr);
223 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
233 int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol)
238 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
242 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
243 NFC_EVENT_TM_ACTIVATED);
247 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
248 goto nla_put_failure;
249 if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol))
250 goto nla_put_failure;
252 genlmsg_end(msg, hdr);
254 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
264 int nfc_genl_tm_deactivated(struct nfc_dev *dev)
269 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
273 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
274 NFC_EVENT_TM_DEACTIVATED);
278 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
279 goto nla_put_failure;
281 genlmsg_end(msg, hdr);
283 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
293 static int nfc_genl_setup_device_added(struct nfc_dev *dev, struct sk_buff *msg)
295 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
296 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
297 nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
298 nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) ||
299 nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode))
304 int nfc_genl_device_added(struct nfc_dev *dev)
309 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
313 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
314 NFC_EVENT_DEVICE_ADDED);
318 if (nfc_genl_setup_device_added(dev, msg))
319 goto nla_put_failure;
321 genlmsg_end(msg, hdr);
323 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
333 int nfc_genl_device_removed(struct nfc_dev *dev)
338 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
342 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
343 NFC_EVENT_DEVICE_REMOVED);
347 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
348 goto nla_put_failure;
350 genlmsg_end(msg, hdr);
352 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
362 int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list)
365 struct nlattr *sdp_attr, *uri_attr;
366 struct nfc_llcp_sdp_tlv *sdres;
367 struct hlist_node *n;
372 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
376 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
377 NFC_EVENT_LLC_SDRES);
381 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
382 goto nla_put_failure;
384 sdp_attr = nla_nest_start_noflag(msg, NFC_ATTR_LLC_SDP);
385 if (sdp_attr == NULL) {
387 goto nla_put_failure;
391 hlist_for_each_entry_safe(sdres, n, sdres_list, node) {
392 pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap);
394 uri_attr = nla_nest_start_noflag(msg, i++);
395 if (uri_attr == NULL) {
397 goto nla_put_failure;
400 if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap))
401 goto nla_put_failure;
403 if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri))
404 goto nla_put_failure;
406 nla_nest_end(msg, uri_attr);
408 hlist_del(&sdres->node);
410 nfc_llcp_free_sdp_tlv(sdres);
413 nla_nest_end(msg, sdp_attr);
415 genlmsg_end(msg, hdr);
417 return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
423 nfc_llcp_free_sdp_tlv_list(sdres_list);
428 int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type)
433 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
437 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
442 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
443 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
444 nla_put_u8(msg, NFC_ATTR_SE_TYPE, type))
445 goto nla_put_failure;
447 genlmsg_end(msg, hdr);
449 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
459 int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx)
464 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
468 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
469 NFC_EVENT_SE_REMOVED);
473 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
474 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx))
475 goto nla_put_failure;
477 genlmsg_end(msg, hdr);
479 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
489 int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
490 struct nfc_evt_transaction *evt_transaction)
496 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
500 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
501 NFC_EVENT_SE_TRANSACTION);
505 se = nfc_find_se(dev, se_idx);
509 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
510 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
511 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) ||
512 nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len,
513 evt_transaction->aid) ||
514 nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len,
515 evt_transaction->params))
516 goto nla_put_failure;
518 /* evt_transaction is no more used */
519 devm_kfree(&dev->dev, evt_transaction);
521 genlmsg_end(msg, hdr);
523 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
529 /* evt_transaction is no more used */
530 devm_kfree(&dev->dev, evt_transaction);
535 int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx)
541 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
545 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
546 NFC_EVENT_SE_CONNECTIVITY);
550 se = nfc_find_se(dev, se_idx);
554 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
555 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
556 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
557 goto nla_put_failure;
559 genlmsg_end(msg, hdr);
561 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
571 static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
573 struct netlink_callback *cb,
578 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
584 genl_dump_check_consistent(cb, hdr);
586 if (nfc_genl_setup_device_added(dev, msg))
587 goto nla_put_failure;
589 genlmsg_end(msg, hdr);
593 genlmsg_cancel(msg, hdr);
597 static int nfc_genl_dump_devices(struct sk_buff *skb,
598 struct netlink_callback *cb)
600 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
601 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
602 bool first_call = false;
606 iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
609 cb->args[0] = (long) iter;
612 mutex_lock(&nfc_devlist_mutex);
614 cb->seq = nfc_devlist_generation;
617 nfc_device_iter_init(iter);
618 dev = nfc_device_iter_next(iter);
624 rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid,
625 cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
629 dev = nfc_device_iter_next(iter);
632 mutex_unlock(&nfc_devlist_mutex);
634 cb->args[1] = (long) dev;
639 static int nfc_genl_dump_devices_done(struct netlink_callback *cb)
641 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
643 nfc_device_iter_exit(iter);
649 int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
650 u8 comm_mode, u8 rf_mode)
655 pr_debug("DEP link is up\n");
657 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
661 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP);
665 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
666 goto nla_put_failure;
667 if (rf_mode == NFC_RF_INITIATOR &&
668 nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
669 goto nla_put_failure;
670 if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) ||
671 nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode))
672 goto nla_put_failure;
674 genlmsg_end(msg, hdr);
676 dev->dep_link_up = true;
678 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
688 int nfc_genl_dep_link_down_event(struct nfc_dev *dev)
693 pr_debug("DEP link is down\n");
695 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
699 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
700 NFC_CMD_DEP_LINK_DOWN);
704 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
705 goto nla_put_failure;
707 genlmsg_end(msg, hdr);
709 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
719 static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info)
726 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
729 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
731 dev = nfc_get_device(idx);
735 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
741 rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq,
748 return genlmsg_reply(msg, info);
757 static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info)
763 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
766 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
768 dev = nfc_get_device(idx);
772 rc = nfc_dev_up(dev);
778 static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info)
784 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
787 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
789 dev = nfc_get_device(idx);
793 rc = nfc_dev_down(dev);
799 static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info)
804 u32 im_protocols = 0, tm_protocols = 0;
806 pr_debug("Poll start\n");
808 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
809 ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] &&
810 !info->attrs[NFC_ATTR_PROTOCOLS]) &&
811 !info->attrs[NFC_ATTR_TM_PROTOCOLS]))
814 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
816 if (info->attrs[NFC_ATTR_TM_PROTOCOLS])
817 tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]);
819 if (info->attrs[NFC_ATTR_IM_PROTOCOLS])
820 im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]);
821 else if (info->attrs[NFC_ATTR_PROTOCOLS])
822 im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
824 dev = nfc_get_device(idx);
828 mutex_lock(&dev->genl_data.genl_data_mutex);
830 rc = nfc_start_poll(dev, im_protocols, tm_protocols);
832 dev->genl_data.poll_req_portid = info->snd_portid;
834 mutex_unlock(&dev->genl_data.genl_data_mutex);
840 static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
846 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
849 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
851 dev = nfc_get_device(idx);
855 device_lock(&dev->dev);
858 device_unlock(&dev->dev);
862 device_unlock(&dev->dev);
864 mutex_lock(&dev->genl_data.genl_data_mutex);
866 if (dev->genl_data.poll_req_portid != info->snd_portid) {
871 rc = nfc_stop_poll(dev);
872 dev->genl_data.poll_req_portid = 0;
875 mutex_unlock(&dev->genl_data.genl_data_mutex);
880 static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info)
883 u32 device_idx, target_idx, protocol;
886 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
887 !info->attrs[NFC_ATTR_TARGET_INDEX] ||
888 !info->attrs[NFC_ATTR_PROTOCOLS])
891 device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
893 dev = nfc_get_device(device_idx);
897 target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
898 protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
900 nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
901 rc = nfc_activate_target(dev, target_idx, protocol);
907 static int nfc_genl_deactivate_target(struct sk_buff *skb,
908 struct genl_info *info)
911 u32 device_idx, target_idx;
914 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
915 !info->attrs[NFC_ATTR_TARGET_INDEX])
918 device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
920 dev = nfc_get_device(device_idx);
924 target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
926 rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
932 static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info)
939 pr_debug("DEP link up\n");
941 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
942 !info->attrs[NFC_ATTR_COMM_MODE])
945 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
946 if (!info->attrs[NFC_ATTR_TARGET_INDEX])
947 tgt_idx = NFC_TARGET_IDX_ANY;
949 tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
951 comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]);
953 if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE)
956 dev = nfc_get_device(idx);
960 rc = nfc_dep_link_up(dev, tgt_idx, comm);
967 static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info)
973 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
974 !info->attrs[NFC_ATTR_TARGET_INDEX])
977 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
979 dev = nfc_get_device(idx);
983 rc = nfc_dep_link_down(dev);
989 static int nfc_genl_send_params(struct sk_buff *msg,
990 struct nfc_llcp_local *local,
995 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0,
996 NFC_CMD_LLC_GET_PARAMS);
1000 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) ||
1001 nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) ||
1002 nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) ||
1003 nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux)))
1004 goto nla_put_failure;
1006 genlmsg_end(msg, hdr);
1010 genlmsg_cancel(msg, hdr);
1014 static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info)
1016 struct nfc_dev *dev;
1017 struct nfc_llcp_local *local;
1019 struct sk_buff *msg = NULL;
1022 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1023 !info->attrs[NFC_ATTR_FIRMWARE_NAME])
1026 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1028 dev = nfc_get_device(idx);
1032 device_lock(&dev->dev);
1034 local = nfc_llcp_find_local(dev);
1040 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1046 rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq);
1049 device_unlock(&dev->dev);
1051 nfc_put_device(dev);
1060 return genlmsg_reply(msg, info);
1063 static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
1065 struct nfc_dev *dev;
1066 struct nfc_llcp_local *local;
1072 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1073 (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] &&
1074 !info->attrs[NFC_ATTR_LLC_PARAM_RW] &&
1075 !info->attrs[NFC_ATTR_LLC_PARAM_MIUX]))
1078 if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) {
1079 rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]);
1081 if (rw > LLCP_MAX_RW)
1085 if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) {
1086 miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]);
1088 if (miux > LLCP_MAX_MIUX)
1092 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1094 dev = nfc_get_device(idx);
1098 device_lock(&dev->dev);
1100 local = nfc_llcp_find_local(dev);
1102 nfc_put_device(dev);
1107 if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) {
1108 if (dev->dep_link_up) {
1113 local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]);
1116 if (info->attrs[NFC_ATTR_LLC_PARAM_RW])
1119 if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX])
1120 local->miux = cpu_to_be16(miux);
1123 device_unlock(&dev->dev);
1125 nfc_put_device(dev);
1130 static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
1132 struct nfc_dev *dev;
1133 struct nfc_llcp_local *local;
1134 struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1];
1139 size_t uri_len, tlvs_len;
1140 struct hlist_head sdreq_list;
1141 struct nfc_llcp_sdp_tlv *sdreq;
1143 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1144 !info->attrs[NFC_ATTR_LLC_SDP])
1147 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1149 dev = nfc_get_device(idx);
1153 device_lock(&dev->dev);
1155 if (dev->dep_link_up == false) {
1160 local = nfc_llcp_find_local(dev);
1162 nfc_put_device(dev);
1167 INIT_HLIST_HEAD(&sdreq_list);
1171 nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) {
1172 rc = nla_parse_nested_deprecated(sdp_attrs, NFC_SDP_ATTR_MAX,
1173 attr, nfc_sdp_genl_policy,
1181 if (!sdp_attrs[NFC_SDP_ATTR_URI])
1184 uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]);
1188 uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]);
1189 if (uri == NULL || *uri == 0)
1192 tid = local->sdreq_next_tid++;
1194 sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len);
1195 if (sdreq == NULL) {
1200 tlvs_len += sdreq->tlv_len;
1202 hlist_add_head(&sdreq->node, &sdreq_list);
1205 if (hlist_empty(&sdreq_list)) {
1210 rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len);
1212 device_unlock(&dev->dev);
1214 nfc_put_device(dev);
1219 static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info)
1221 struct nfc_dev *dev;
1224 char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
1226 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
1229 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1231 dev = nfc_get_device(idx);
1235 nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME],
1236 sizeof(firmware_name));
1238 rc = nfc_fw_download(dev, firmware_name);
1240 nfc_put_device(dev);
1244 int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
1247 struct sk_buff *msg;
1250 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1254 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
1255 NFC_CMD_FW_DOWNLOAD);
1259 if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) ||
1260 nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) ||
1261 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
1262 goto nla_put_failure;
1264 genlmsg_end(msg, hdr);
1266 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
1276 static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info)
1278 struct nfc_dev *dev;
1282 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1283 !info->attrs[NFC_ATTR_SE_INDEX])
1286 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1287 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1289 dev = nfc_get_device(idx);
1293 rc = nfc_enable_se(dev, se_idx);
1295 nfc_put_device(dev);
1299 static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info)
1301 struct nfc_dev *dev;
1305 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1306 !info->attrs[NFC_ATTR_SE_INDEX])
1309 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1310 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1312 dev = nfc_get_device(idx);
1316 rc = nfc_disable_se(dev, se_idx);
1318 nfc_put_device(dev);
1322 static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev,
1323 u32 portid, u32 seq,
1324 struct netlink_callback *cb,
1328 struct nfc_se *se, *n;
1330 list_for_each_entry_safe(se, n, &dev->secure_elements, list) {
1331 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
1334 goto nla_put_failure;
1337 genl_dump_check_consistent(cb, hdr);
1339 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
1340 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) ||
1341 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
1342 goto nla_put_failure;
1344 genlmsg_end(msg, hdr);
1350 genlmsg_cancel(msg, hdr);
1354 static int nfc_genl_dump_ses(struct sk_buff *skb,
1355 struct netlink_callback *cb)
1357 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
1358 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
1359 bool first_call = false;
1363 iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
1366 cb->args[0] = (long) iter;
1369 mutex_lock(&nfc_devlist_mutex);
1371 cb->seq = nfc_devlist_generation;
1374 nfc_device_iter_init(iter);
1375 dev = nfc_device_iter_next(iter);
1381 rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid,
1382 cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
1386 dev = nfc_device_iter_next(iter);
1389 mutex_unlock(&nfc_devlist_mutex);
1391 cb->args[1] = (long) dev;
1396 static int nfc_genl_dump_ses_done(struct netlink_callback *cb)
1398 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
1400 nfc_device_iter_exit(iter);
1406 static int nfc_se_io(struct nfc_dev *dev, u32 se_idx,
1407 u8 *apdu, size_t apdu_length,
1408 se_io_cb_t cb, void *cb_context)
1413 pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
1415 device_lock(&dev->dev);
1417 if (!device_is_registered(&dev->dev)) {
1427 if (!dev->ops->se_io) {
1432 se = nfc_find_se(dev, se_idx);
1438 if (se->state != NFC_SE_ENABLED) {
1443 rc = dev->ops->se_io(dev, se_idx, apdu,
1444 apdu_length, cb, cb_context);
1447 device_unlock(&dev->dev);
1456 static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err)
1458 struct se_io_ctx *ctx = context;
1459 struct sk_buff *msg;
1462 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1468 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
1473 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) ||
1474 nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) ||
1475 nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu))
1476 goto nla_put_failure;
1478 genlmsg_end(msg, hdr);
1480 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
1494 static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info)
1496 struct nfc_dev *dev;
1497 struct se_io_ctx *ctx;
1498 u32 dev_idx, se_idx;
1502 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1503 !info->attrs[NFC_ATTR_SE_INDEX] ||
1504 !info->attrs[NFC_ATTR_SE_APDU])
1507 dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1508 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1510 dev = nfc_get_device(dev_idx);
1514 if (!dev->ops || !dev->ops->se_io)
1517 apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]);
1521 apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]);
1525 ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL);
1529 ctx->dev_idx = dev_idx;
1530 ctx->se_idx = se_idx;
1532 return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
1535 static int nfc_genl_vendor_cmd(struct sk_buff *skb,
1536 struct genl_info *info)
1538 struct nfc_dev *dev;
1539 struct nfc_vendor_cmd *cmd;
1540 u32 dev_idx, vid, subcmd;
1545 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1546 !info->attrs[NFC_ATTR_VENDOR_ID] ||
1547 !info->attrs[NFC_ATTR_VENDOR_SUBCMD])
1550 dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1551 vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]);
1552 subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]);
1554 dev = nfc_get_device(dev_idx);
1555 if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds)
1558 if (info->attrs[NFC_ATTR_VENDOR_DATA]) {
1559 data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);
1560 data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]);
1568 for (i = 0; i < dev->n_vendor_cmds; i++) {
1569 cmd = &dev->vendor_cmds[i];
1571 if (cmd->vendor_id != vid || cmd->subcmd != subcmd)
1574 dev->cur_cmd_info = info;
1575 err = cmd->doit(dev, data, data_len);
1576 dev->cur_cmd_info = NULL;
1583 /* message building helper */
1584 static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1587 /* since there is no private header just add the generic one */
1588 return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd);
1591 static struct sk_buff *
1592 __nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen,
1593 u32 portid, u32 seq,
1594 enum nfc_attrs attr,
1595 u32 oui, u32 subcmd, gfp_t gfp)
1597 struct sk_buff *skb;
1600 skb = nlmsg_new(approxlen + 100, gfp);
1604 hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR);
1610 if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx))
1611 goto nla_put_failure;
1612 if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui))
1613 goto nla_put_failure;
1614 if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd))
1615 goto nla_put_failure;
1617 ((void **)skb->cb)[0] = dev;
1618 ((void **)skb->cb)[1] = hdr;
1627 struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev,
1628 enum nfc_attrs attr,
1629 u32 oui, u32 subcmd,
1632 if (WARN_ON(!dev->cur_cmd_info))
1635 return __nfc_alloc_vendor_cmd_skb(dev, approxlen,
1636 dev->cur_cmd_info->snd_portid,
1637 dev->cur_cmd_info->snd_seq, attr,
1638 oui, subcmd, GFP_KERNEL);
1640 EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb);
1642 int nfc_vendor_cmd_reply(struct sk_buff *skb)
1644 struct nfc_dev *dev = ((void **)skb->cb)[0];
1645 void *hdr = ((void **)skb->cb)[1];
1647 /* clear CB data for netlink core to own from now on */
1648 memset(skb->cb, 0, sizeof(skb->cb));
1650 if (WARN_ON(!dev->cur_cmd_info)) {
1655 genlmsg_end(skb, hdr);
1656 return genlmsg_reply(skb, dev->cur_cmd_info);
1658 EXPORT_SYMBOL(nfc_vendor_cmd_reply);
1660 static const struct genl_ops nfc_genl_ops[] = {
1662 .cmd = NFC_CMD_GET_DEVICE,
1663 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1664 .doit = nfc_genl_get_device,
1665 .dumpit = nfc_genl_dump_devices,
1666 .done = nfc_genl_dump_devices_done,
1669 .cmd = NFC_CMD_DEV_UP,
1670 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1671 .doit = nfc_genl_dev_up,
1674 .cmd = NFC_CMD_DEV_DOWN,
1675 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1676 .doit = nfc_genl_dev_down,
1679 .cmd = NFC_CMD_START_POLL,
1680 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1681 .doit = nfc_genl_start_poll,
1684 .cmd = NFC_CMD_STOP_POLL,
1685 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1686 .doit = nfc_genl_stop_poll,
1689 .cmd = NFC_CMD_DEP_LINK_UP,
1690 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1691 .doit = nfc_genl_dep_link_up,
1694 .cmd = NFC_CMD_DEP_LINK_DOWN,
1695 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1696 .doit = nfc_genl_dep_link_down,
1699 .cmd = NFC_CMD_GET_TARGET,
1700 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1701 .dumpit = nfc_genl_dump_targets,
1702 .done = nfc_genl_dump_targets_done,
1705 .cmd = NFC_CMD_LLC_GET_PARAMS,
1706 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1707 .doit = nfc_genl_llc_get_params,
1710 .cmd = NFC_CMD_LLC_SET_PARAMS,
1711 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1712 .doit = nfc_genl_llc_set_params,
1715 .cmd = NFC_CMD_LLC_SDREQ,
1716 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1717 .doit = nfc_genl_llc_sdreq,
1720 .cmd = NFC_CMD_FW_DOWNLOAD,
1721 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1722 .doit = nfc_genl_fw_download,
1725 .cmd = NFC_CMD_ENABLE_SE,
1726 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1727 .doit = nfc_genl_enable_se,
1730 .cmd = NFC_CMD_DISABLE_SE,
1731 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1732 .doit = nfc_genl_disable_se,
1735 .cmd = NFC_CMD_GET_SE,
1736 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1737 .dumpit = nfc_genl_dump_ses,
1738 .done = nfc_genl_dump_ses_done,
1741 .cmd = NFC_CMD_SE_IO,
1742 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1743 .doit = nfc_genl_se_io,
1746 .cmd = NFC_CMD_ACTIVATE_TARGET,
1747 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1748 .doit = nfc_genl_activate_target,
1751 .cmd = NFC_CMD_VENDOR,
1752 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1753 .doit = nfc_genl_vendor_cmd,
1756 .cmd = NFC_CMD_DEACTIVATE_TARGET,
1757 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1758 .doit = nfc_genl_deactivate_target,
1762 static struct genl_family nfc_genl_family __ro_after_init = {
1764 .name = NFC_GENL_NAME,
1765 .version = NFC_GENL_VERSION,
1766 .maxattr = NFC_ATTR_MAX,
1767 .policy = nfc_genl_policy,
1768 .module = THIS_MODULE,
1769 .ops = nfc_genl_ops,
1770 .n_ops = ARRAY_SIZE(nfc_genl_ops),
1771 .mcgrps = nfc_genl_mcgrps,
1772 .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps),
1776 struct urelease_work {
1777 struct work_struct w;
1781 static void nfc_urelease_event_work(struct work_struct *work)
1783 struct urelease_work *w = container_of(work, struct urelease_work, w);
1784 struct class_dev_iter iter;
1785 struct nfc_dev *dev;
1787 pr_debug("portid %d\n", w->portid);
1789 mutex_lock(&nfc_devlist_mutex);
1791 nfc_device_iter_init(&iter);
1792 dev = nfc_device_iter_next(&iter);
1795 mutex_lock(&dev->genl_data.genl_data_mutex);
1797 if (dev->genl_data.poll_req_portid == w->portid) {
1799 dev->genl_data.poll_req_portid = 0;
1802 mutex_unlock(&dev->genl_data.genl_data_mutex);
1804 dev = nfc_device_iter_next(&iter);
1807 nfc_device_iter_exit(&iter);
1809 mutex_unlock(&nfc_devlist_mutex);
1814 static int nfc_genl_rcv_nl_event(struct notifier_block *this,
1815 unsigned long event, void *ptr)
1817 struct netlink_notify *n = ptr;
1818 struct urelease_work *w;
1820 if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC)
1823 pr_debug("NETLINK_URELEASE event from id %d\n", n->portid);
1825 w = kmalloc(sizeof(*w), GFP_ATOMIC);
1827 INIT_WORK((struct work_struct *) w, nfc_urelease_event_work);
1828 w->portid = n->portid;
1829 schedule_work((struct work_struct *) w);
1836 void nfc_genl_data_init(struct nfc_genl_data *genl_data)
1838 genl_data->poll_req_portid = 0;
1839 mutex_init(&genl_data->genl_data_mutex);
1842 void nfc_genl_data_exit(struct nfc_genl_data *genl_data)
1844 mutex_destroy(&genl_data->genl_data_mutex);
1847 static struct notifier_block nl_notifier = {
1848 .notifier_call = nfc_genl_rcv_nl_event,
1852 * nfc_genl_init() - Initialize netlink interface
1854 * This initialization function registers the nfc netlink family.
1856 int __init nfc_genl_init(void)
1860 rc = genl_register_family(&nfc_genl_family);
1864 netlink_register_notifier(&nl_notifier);
1870 * nfc_genl_exit() - Deinitialize netlink interface
1872 * This exit function unregisters the nfc netlink family.
1874 void nfc_genl_exit(void)
1876 netlink_unregister_notifier(&nl_notifier);
1877 genl_unregister_family(&nfc_genl_family);