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