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 struct nlattr **attrbuf = genl_family_attrbuf(&nfc_genl_family);
114 rc = nlmsg_parse_deprecated(cb->nlh,
115 GENL_HDRLEN + nfc_genl_family.hdrsize,
116 attrbuf, nfc_genl_family.maxattr,
117 nfc_genl_policy, NULL);
121 if (!attrbuf[NFC_ATTR_DEVICE_INDEX])
122 return ERR_PTR(-EINVAL);
124 idx = nla_get_u32(attrbuf[NFC_ATTR_DEVICE_INDEX]);
126 dev = nfc_get_device(idx);
128 return ERR_PTR(-ENODEV);
133 static int nfc_genl_dump_targets(struct sk_buff *skb,
134 struct netlink_callback *cb)
137 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
141 dev = __get_device_from_cb(cb);
145 cb->args[1] = (long) dev;
148 device_lock(&dev->dev);
150 cb->seq = dev->targets_generation;
152 while (i < dev->n_targets) {
153 rc = nfc_genl_send_target(skb, &dev->targets[i], cb,
161 device_unlock(&dev->dev);
168 static int nfc_genl_dump_targets_done(struct netlink_callback *cb)
170 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
178 int nfc_genl_targets_found(struct nfc_dev *dev)
183 dev->genl_data.poll_req_portid = 0;
185 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
189 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
190 NFC_EVENT_TARGETS_FOUND);
194 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
195 goto nla_put_failure;
197 genlmsg_end(msg, hdr);
199 return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
207 int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx)
212 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
216 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
217 NFC_EVENT_TARGET_LOST);
221 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
222 nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
223 goto nla_put_failure;
225 genlmsg_end(msg, hdr);
227 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
237 int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol)
242 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
246 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
247 NFC_EVENT_TM_ACTIVATED);
251 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
252 goto nla_put_failure;
253 if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol))
254 goto nla_put_failure;
256 genlmsg_end(msg, hdr);
258 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
268 int nfc_genl_tm_deactivated(struct nfc_dev *dev)
273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
277 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
278 NFC_EVENT_TM_DEACTIVATED);
282 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
283 goto nla_put_failure;
285 genlmsg_end(msg, hdr);
287 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
297 static int nfc_genl_setup_device_added(struct nfc_dev *dev, struct sk_buff *msg)
299 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
300 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
301 nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
302 nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) ||
303 nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode))
308 int nfc_genl_device_added(struct nfc_dev *dev)
313 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
317 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
318 NFC_EVENT_DEVICE_ADDED);
322 if (nfc_genl_setup_device_added(dev, msg))
323 goto nla_put_failure;
325 genlmsg_end(msg, hdr);
327 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
337 int nfc_genl_device_removed(struct nfc_dev *dev)
342 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
346 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
347 NFC_EVENT_DEVICE_REMOVED);
351 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
352 goto nla_put_failure;
354 genlmsg_end(msg, hdr);
356 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
366 int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list)
369 struct nlattr *sdp_attr, *uri_attr;
370 struct nfc_llcp_sdp_tlv *sdres;
371 struct hlist_node *n;
376 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
380 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
381 NFC_EVENT_LLC_SDRES);
385 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
386 goto nla_put_failure;
388 sdp_attr = nla_nest_start_noflag(msg, NFC_ATTR_LLC_SDP);
389 if (sdp_attr == NULL) {
391 goto nla_put_failure;
395 hlist_for_each_entry_safe(sdres, n, sdres_list, node) {
396 pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap);
398 uri_attr = nla_nest_start_noflag(msg, i++);
399 if (uri_attr == NULL) {
401 goto nla_put_failure;
404 if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap))
405 goto nla_put_failure;
407 if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri))
408 goto nla_put_failure;
410 nla_nest_end(msg, uri_attr);
412 hlist_del(&sdres->node);
414 nfc_llcp_free_sdp_tlv(sdres);
417 nla_nest_end(msg, sdp_attr);
419 genlmsg_end(msg, hdr);
421 return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
427 nfc_llcp_free_sdp_tlv_list(sdres_list);
432 int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type)
437 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
441 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
446 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
447 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
448 nla_put_u8(msg, NFC_ATTR_SE_TYPE, type))
449 goto nla_put_failure;
451 genlmsg_end(msg, hdr);
453 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
463 int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx)
468 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
472 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
473 NFC_EVENT_SE_REMOVED);
477 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
478 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx))
479 goto nla_put_failure;
481 genlmsg_end(msg, hdr);
483 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
493 int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
494 struct nfc_evt_transaction *evt_transaction)
500 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
504 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
505 NFC_EVENT_SE_TRANSACTION);
509 se = nfc_find_se(dev, se_idx);
513 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
514 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
515 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) ||
516 nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len,
517 evt_transaction->aid) ||
518 nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len,
519 evt_transaction->params))
520 goto nla_put_failure;
522 /* evt_transaction is no more used */
523 devm_kfree(&dev->dev, evt_transaction);
525 genlmsg_end(msg, hdr);
527 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
533 /* evt_transaction is no more used */
534 devm_kfree(&dev->dev, evt_transaction);
539 int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx)
545 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
549 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
550 NFC_EVENT_SE_CONNECTIVITY);
554 se = nfc_find_se(dev, se_idx);
558 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
559 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
560 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
561 goto nla_put_failure;
563 genlmsg_end(msg, hdr);
565 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
575 static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
577 struct netlink_callback *cb,
582 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
588 genl_dump_check_consistent(cb, hdr);
590 if (nfc_genl_setup_device_added(dev, msg))
591 goto nla_put_failure;
593 genlmsg_end(msg, hdr);
597 genlmsg_cancel(msg, hdr);
601 static int nfc_genl_dump_devices(struct sk_buff *skb,
602 struct netlink_callback *cb)
604 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
605 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
606 bool first_call = false;
610 iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
613 cb->args[0] = (long) iter;
616 mutex_lock(&nfc_devlist_mutex);
618 cb->seq = nfc_devlist_generation;
621 nfc_device_iter_init(iter);
622 dev = nfc_device_iter_next(iter);
628 rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid,
629 cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
633 dev = nfc_device_iter_next(iter);
636 mutex_unlock(&nfc_devlist_mutex);
638 cb->args[1] = (long) dev;
643 static int nfc_genl_dump_devices_done(struct netlink_callback *cb)
645 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
648 nfc_device_iter_exit(iter);
655 int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
656 u8 comm_mode, u8 rf_mode)
661 pr_debug("DEP link is up\n");
663 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
667 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP);
671 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
672 goto nla_put_failure;
673 if (rf_mode == NFC_RF_INITIATOR &&
674 nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
675 goto nla_put_failure;
676 if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) ||
677 nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode))
678 goto nla_put_failure;
680 genlmsg_end(msg, hdr);
682 dev->dep_link_up = true;
684 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
694 int nfc_genl_dep_link_down_event(struct nfc_dev *dev)
699 pr_debug("DEP link is down\n");
701 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
705 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
706 NFC_CMD_DEP_LINK_DOWN);
710 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
711 goto nla_put_failure;
713 genlmsg_end(msg, hdr);
715 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
725 static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info)
732 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
735 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
737 dev = nfc_get_device(idx);
741 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
747 rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq,
754 return genlmsg_reply(msg, info);
763 static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info)
769 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
772 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
774 dev = nfc_get_device(idx);
778 rc = nfc_dev_up(dev);
784 static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info)
790 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
793 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
795 dev = nfc_get_device(idx);
799 rc = nfc_dev_down(dev);
805 static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info)
810 u32 im_protocols = 0, tm_protocols = 0;
812 pr_debug("Poll start\n");
814 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
815 ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] &&
816 !info->attrs[NFC_ATTR_PROTOCOLS]) &&
817 !info->attrs[NFC_ATTR_TM_PROTOCOLS]))
820 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
822 if (info->attrs[NFC_ATTR_TM_PROTOCOLS])
823 tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]);
825 if (info->attrs[NFC_ATTR_IM_PROTOCOLS])
826 im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]);
827 else if (info->attrs[NFC_ATTR_PROTOCOLS])
828 im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
830 dev = nfc_get_device(idx);
834 mutex_lock(&dev->genl_data.genl_data_mutex);
836 rc = nfc_start_poll(dev, im_protocols, tm_protocols);
838 dev->genl_data.poll_req_portid = info->snd_portid;
840 mutex_unlock(&dev->genl_data.genl_data_mutex);
846 static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
852 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
855 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
857 dev = nfc_get_device(idx);
861 device_lock(&dev->dev);
864 device_unlock(&dev->dev);
869 device_unlock(&dev->dev);
871 mutex_lock(&dev->genl_data.genl_data_mutex);
873 if (dev->genl_data.poll_req_portid != info->snd_portid) {
878 rc = nfc_stop_poll(dev);
879 dev->genl_data.poll_req_portid = 0;
882 mutex_unlock(&dev->genl_data.genl_data_mutex);
887 static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info)
890 u32 device_idx, target_idx, protocol;
893 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
894 !info->attrs[NFC_ATTR_TARGET_INDEX] ||
895 !info->attrs[NFC_ATTR_PROTOCOLS])
898 device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
900 dev = nfc_get_device(device_idx);
904 target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
905 protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
907 nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
908 rc = nfc_activate_target(dev, target_idx, protocol);
914 static int nfc_genl_deactivate_target(struct sk_buff *skb,
915 struct genl_info *info)
918 u32 device_idx, target_idx;
921 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
922 !info->attrs[NFC_ATTR_TARGET_INDEX])
925 device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
927 dev = nfc_get_device(device_idx);
931 target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
933 rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
939 static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info)
946 pr_debug("DEP link up\n");
948 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
949 !info->attrs[NFC_ATTR_COMM_MODE])
952 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
953 if (!info->attrs[NFC_ATTR_TARGET_INDEX])
954 tgt_idx = NFC_TARGET_IDX_ANY;
956 tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
958 comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]);
960 if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE)
963 dev = nfc_get_device(idx);
967 rc = nfc_dep_link_up(dev, tgt_idx, comm);
974 static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info)
980 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
981 !info->attrs[NFC_ATTR_TARGET_INDEX])
984 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
986 dev = nfc_get_device(idx);
990 rc = nfc_dep_link_down(dev);
996 static int nfc_genl_send_params(struct sk_buff *msg,
997 struct nfc_llcp_local *local,
1002 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0,
1003 NFC_CMD_LLC_GET_PARAMS);
1007 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) ||
1008 nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) ||
1009 nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) ||
1010 nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux)))
1011 goto nla_put_failure;
1013 genlmsg_end(msg, hdr);
1017 genlmsg_cancel(msg, hdr);
1021 static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info)
1023 struct nfc_dev *dev;
1024 struct nfc_llcp_local *local;
1026 struct sk_buff *msg = NULL;
1029 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1030 !info->attrs[NFC_ATTR_FIRMWARE_NAME])
1033 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1035 dev = nfc_get_device(idx);
1039 device_lock(&dev->dev);
1041 local = nfc_llcp_find_local(dev);
1047 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1053 rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq);
1056 device_unlock(&dev->dev);
1058 nfc_put_device(dev);
1067 return genlmsg_reply(msg, info);
1070 static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
1072 struct nfc_dev *dev;
1073 struct nfc_llcp_local *local;
1079 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1080 (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] &&
1081 !info->attrs[NFC_ATTR_LLC_PARAM_RW] &&
1082 !info->attrs[NFC_ATTR_LLC_PARAM_MIUX]))
1085 if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) {
1086 rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]);
1088 if (rw > LLCP_MAX_RW)
1092 if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) {
1093 miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]);
1095 if (miux > LLCP_MAX_MIUX)
1099 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1101 dev = nfc_get_device(idx);
1105 device_lock(&dev->dev);
1107 local = nfc_llcp_find_local(dev);
1113 if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) {
1114 if (dev->dep_link_up) {
1119 local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]);
1122 if (info->attrs[NFC_ATTR_LLC_PARAM_RW])
1125 if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX])
1126 local->miux = cpu_to_be16(miux);
1129 device_unlock(&dev->dev);
1131 nfc_put_device(dev);
1136 static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
1138 struct nfc_dev *dev;
1139 struct nfc_llcp_local *local;
1140 struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1];
1145 size_t uri_len, tlvs_len;
1146 struct hlist_head sdreq_list;
1147 struct nfc_llcp_sdp_tlv *sdreq;
1149 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1150 !info->attrs[NFC_ATTR_LLC_SDP])
1153 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1155 dev = nfc_get_device(idx);
1159 device_lock(&dev->dev);
1161 if (dev->dep_link_up == false) {
1166 local = nfc_llcp_find_local(dev);
1172 INIT_HLIST_HEAD(&sdreq_list);
1176 nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) {
1177 rc = nla_parse_nested_deprecated(sdp_attrs, NFC_SDP_ATTR_MAX,
1178 attr, nfc_sdp_genl_policy,
1186 if (!sdp_attrs[NFC_SDP_ATTR_URI])
1189 uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]);
1193 uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]);
1194 if (uri == NULL || *uri == 0)
1197 tid = local->sdreq_next_tid++;
1199 sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len);
1200 if (sdreq == NULL) {
1205 tlvs_len += sdreq->tlv_len;
1207 hlist_add_head(&sdreq->node, &sdreq_list);
1210 if (hlist_empty(&sdreq_list)) {
1215 rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len);
1217 device_unlock(&dev->dev);
1219 nfc_put_device(dev);
1224 static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info)
1226 struct nfc_dev *dev;
1229 char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
1231 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_FIRMWARE_NAME])
1234 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1236 dev = nfc_get_device(idx);
1240 nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME],
1241 sizeof(firmware_name));
1243 rc = nfc_fw_download(dev, firmware_name);
1245 nfc_put_device(dev);
1249 int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
1252 struct sk_buff *msg;
1255 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
1259 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
1260 NFC_CMD_FW_DOWNLOAD);
1264 if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) ||
1265 nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) ||
1266 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
1267 goto nla_put_failure;
1269 genlmsg_end(msg, hdr);
1271 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
1281 static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info)
1283 struct nfc_dev *dev;
1287 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1288 !info->attrs[NFC_ATTR_SE_INDEX])
1291 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1292 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1294 dev = nfc_get_device(idx);
1298 rc = nfc_enable_se(dev, se_idx);
1300 nfc_put_device(dev);
1304 static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info)
1306 struct nfc_dev *dev;
1310 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1311 !info->attrs[NFC_ATTR_SE_INDEX])
1314 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1315 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1317 dev = nfc_get_device(idx);
1321 rc = nfc_disable_se(dev, se_idx);
1323 nfc_put_device(dev);
1327 static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev,
1328 u32 portid, u32 seq,
1329 struct netlink_callback *cb,
1333 struct nfc_se *se, *n;
1335 list_for_each_entry_safe(se, n, &dev->secure_elements, list) {
1336 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
1339 goto nla_put_failure;
1342 genl_dump_check_consistent(cb, hdr);
1344 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
1345 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) ||
1346 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
1347 goto nla_put_failure;
1349 genlmsg_end(msg, hdr);
1355 genlmsg_cancel(msg, hdr);
1359 static int nfc_genl_dump_ses(struct sk_buff *skb,
1360 struct netlink_callback *cb)
1362 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
1363 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
1364 bool first_call = false;
1368 iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
1371 cb->args[0] = (long) iter;
1374 mutex_lock(&nfc_devlist_mutex);
1376 cb->seq = nfc_devlist_generation;
1379 nfc_device_iter_init(iter);
1380 dev = nfc_device_iter_next(iter);
1386 rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid,
1387 cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
1391 dev = nfc_device_iter_next(iter);
1394 mutex_unlock(&nfc_devlist_mutex);
1396 cb->args[1] = (long) dev;
1401 static int nfc_genl_dump_ses_done(struct netlink_callback *cb)
1403 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
1406 nfc_device_iter_exit(iter);
1413 static int nfc_se_io(struct nfc_dev *dev, u32 se_idx,
1414 u8 *apdu, size_t apdu_length,
1415 se_io_cb_t cb, void *cb_context)
1420 pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
1422 device_lock(&dev->dev);
1424 if (!device_is_registered(&dev->dev)) {
1434 if (!dev->ops->se_io) {
1439 se = nfc_find_se(dev, se_idx);
1445 if (se->state != NFC_SE_ENABLED) {
1450 rc = dev->ops->se_io(dev, se_idx, apdu,
1451 apdu_length, cb, cb_context);
1454 device_unlock(&dev->dev);
1463 static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err)
1465 struct se_io_ctx *ctx = context;
1466 struct sk_buff *msg;
1469 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1475 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
1480 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) ||
1481 nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) ||
1482 nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu))
1483 goto nla_put_failure;
1485 genlmsg_end(msg, hdr);
1487 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
1501 static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info)
1503 struct nfc_dev *dev;
1504 struct se_io_ctx *ctx;
1505 u32 dev_idx, se_idx;
1509 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1510 !info->attrs[NFC_ATTR_SE_INDEX] ||
1511 !info->attrs[NFC_ATTR_SE_APDU])
1514 dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1515 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1517 dev = nfc_get_device(dev_idx);
1521 if (!dev->ops || !dev->ops->se_io)
1524 apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]);
1528 apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]);
1532 ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL);
1536 ctx->dev_idx = dev_idx;
1537 ctx->se_idx = se_idx;
1539 return nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
1542 static int nfc_genl_vendor_cmd(struct sk_buff *skb,
1543 struct genl_info *info)
1545 struct nfc_dev *dev;
1546 struct nfc_vendor_cmd *cmd;
1547 u32 dev_idx, vid, subcmd;
1552 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1553 !info->attrs[NFC_ATTR_VENDOR_ID] ||
1554 !info->attrs[NFC_ATTR_VENDOR_SUBCMD])
1557 dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1558 vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]);
1559 subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]);
1561 dev = nfc_get_device(dev_idx);
1562 if (!dev || !dev->vendor_cmds || !dev->n_vendor_cmds)
1565 if (info->attrs[NFC_ATTR_VENDOR_DATA]) {
1566 data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);
1567 data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]);
1575 for (i = 0; i < dev->n_vendor_cmds; i++) {
1576 cmd = &dev->vendor_cmds[i];
1578 if (cmd->vendor_id != vid || cmd->subcmd != subcmd)
1581 dev->cur_cmd_info = info;
1582 err = cmd->doit(dev, data, data_len);
1583 dev->cur_cmd_info = NULL;
1590 /* message building helper */
1591 static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
1594 /* since there is no private header just add the generic one */
1595 return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd);
1598 static struct sk_buff *
1599 __nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen,
1600 u32 portid, u32 seq,
1601 enum nfc_attrs attr,
1602 u32 oui, u32 subcmd, gfp_t gfp)
1604 struct sk_buff *skb;
1607 skb = nlmsg_new(approxlen + 100, gfp);
1611 hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR);
1617 if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx))
1618 goto nla_put_failure;
1619 if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui))
1620 goto nla_put_failure;
1621 if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd))
1622 goto nla_put_failure;
1624 ((void **)skb->cb)[0] = dev;
1625 ((void **)skb->cb)[1] = hdr;
1634 struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev,
1635 enum nfc_attrs attr,
1636 u32 oui, u32 subcmd,
1639 if (WARN_ON(!dev->cur_cmd_info))
1642 return __nfc_alloc_vendor_cmd_skb(dev, approxlen,
1643 dev->cur_cmd_info->snd_portid,
1644 dev->cur_cmd_info->snd_seq, attr,
1645 oui, subcmd, GFP_KERNEL);
1647 EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb);
1649 int nfc_vendor_cmd_reply(struct sk_buff *skb)
1651 struct nfc_dev *dev = ((void **)skb->cb)[0];
1652 void *hdr = ((void **)skb->cb)[1];
1654 /* clear CB data for netlink core to own from now on */
1655 memset(skb->cb, 0, sizeof(skb->cb));
1657 if (WARN_ON(!dev->cur_cmd_info)) {
1662 genlmsg_end(skb, hdr);
1663 return genlmsg_reply(skb, dev->cur_cmd_info);
1665 EXPORT_SYMBOL(nfc_vendor_cmd_reply);
1667 static const struct genl_ops nfc_genl_ops[] = {
1669 .cmd = NFC_CMD_GET_DEVICE,
1670 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1671 .doit = nfc_genl_get_device,
1672 .dumpit = nfc_genl_dump_devices,
1673 .done = nfc_genl_dump_devices_done,
1676 .cmd = NFC_CMD_DEV_UP,
1677 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1678 .doit = nfc_genl_dev_up,
1681 .cmd = NFC_CMD_DEV_DOWN,
1682 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1683 .doit = nfc_genl_dev_down,
1686 .cmd = NFC_CMD_START_POLL,
1687 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1688 .doit = nfc_genl_start_poll,
1691 .cmd = NFC_CMD_STOP_POLL,
1692 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1693 .doit = nfc_genl_stop_poll,
1696 .cmd = NFC_CMD_DEP_LINK_UP,
1697 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1698 .doit = nfc_genl_dep_link_up,
1701 .cmd = NFC_CMD_DEP_LINK_DOWN,
1702 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1703 .doit = nfc_genl_dep_link_down,
1706 .cmd = NFC_CMD_GET_TARGET,
1707 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1708 .dumpit = nfc_genl_dump_targets,
1709 .done = nfc_genl_dump_targets_done,
1712 .cmd = NFC_CMD_LLC_GET_PARAMS,
1713 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1714 .doit = nfc_genl_llc_get_params,
1717 .cmd = NFC_CMD_LLC_SET_PARAMS,
1718 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1719 .doit = nfc_genl_llc_set_params,
1722 .cmd = NFC_CMD_LLC_SDREQ,
1723 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1724 .doit = nfc_genl_llc_sdreq,
1727 .cmd = NFC_CMD_FW_DOWNLOAD,
1728 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1729 .doit = nfc_genl_fw_download,
1732 .cmd = NFC_CMD_ENABLE_SE,
1733 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1734 .doit = nfc_genl_enable_se,
1737 .cmd = NFC_CMD_DISABLE_SE,
1738 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1739 .doit = nfc_genl_disable_se,
1742 .cmd = NFC_CMD_GET_SE,
1743 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1744 .dumpit = nfc_genl_dump_ses,
1745 .done = nfc_genl_dump_ses_done,
1748 .cmd = NFC_CMD_SE_IO,
1749 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1750 .doit = nfc_genl_se_io,
1753 .cmd = NFC_CMD_ACTIVATE_TARGET,
1754 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1755 .doit = nfc_genl_activate_target,
1758 .cmd = NFC_CMD_VENDOR,
1759 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1760 .doit = nfc_genl_vendor_cmd,
1763 .cmd = NFC_CMD_DEACTIVATE_TARGET,
1764 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
1765 .doit = nfc_genl_deactivate_target,
1769 static struct genl_family nfc_genl_family __ro_after_init = {
1771 .name = NFC_GENL_NAME,
1772 .version = NFC_GENL_VERSION,
1773 .maxattr = NFC_ATTR_MAX,
1774 .policy = nfc_genl_policy,
1775 .module = THIS_MODULE,
1776 .ops = nfc_genl_ops,
1777 .n_ops = ARRAY_SIZE(nfc_genl_ops),
1778 .mcgrps = nfc_genl_mcgrps,
1779 .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps),
1783 struct urelease_work {
1784 struct work_struct w;
1788 static void nfc_urelease_event_work(struct work_struct *work)
1790 struct urelease_work *w = container_of(work, struct urelease_work, w);
1791 struct class_dev_iter iter;
1792 struct nfc_dev *dev;
1794 pr_debug("portid %d\n", w->portid);
1796 mutex_lock(&nfc_devlist_mutex);
1798 nfc_device_iter_init(&iter);
1799 dev = nfc_device_iter_next(&iter);
1802 mutex_lock(&dev->genl_data.genl_data_mutex);
1804 if (dev->genl_data.poll_req_portid == w->portid) {
1806 dev->genl_data.poll_req_portid = 0;
1809 mutex_unlock(&dev->genl_data.genl_data_mutex);
1811 dev = nfc_device_iter_next(&iter);
1814 nfc_device_iter_exit(&iter);
1816 mutex_unlock(&nfc_devlist_mutex);
1821 static int nfc_genl_rcv_nl_event(struct notifier_block *this,
1822 unsigned long event, void *ptr)
1824 struct netlink_notify *n = ptr;
1825 struct urelease_work *w;
1827 if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC)
1830 pr_debug("NETLINK_URELEASE event from id %d\n", n->portid);
1832 w = kmalloc(sizeof(*w), GFP_ATOMIC);
1834 INIT_WORK((struct work_struct *) w, nfc_urelease_event_work);
1835 w->portid = n->portid;
1836 schedule_work((struct work_struct *) w);
1843 void nfc_genl_data_init(struct nfc_genl_data *genl_data)
1845 genl_data->poll_req_portid = 0;
1846 mutex_init(&genl_data->genl_data_mutex);
1849 void nfc_genl_data_exit(struct nfc_genl_data *genl_data)
1851 mutex_destroy(&genl_data->genl_data_mutex);
1854 static struct notifier_block nl_notifier = {
1855 .notifier_call = nfc_genl_rcv_nl_event,
1859 * nfc_genl_init() - Initialize netlink interface
1861 * This initialization function registers the nfc netlink family.
1863 int __init nfc_genl_init(void)
1867 rc = genl_register_family(&nfc_genl_family);
1871 netlink_register_notifier(&nl_notifier);
1877 * nfc_genl_exit() - Deinitialize netlink interface
1879 * This exit function unregisters the nfc netlink family.
1881 void nfc_genl_exit(void)
1883 netlink_unregister_notifier(&nl_notifier);
1884 genl_unregister_family(&nfc_genl_family);