2 * Copyright (C) 2011 Instituto Nokia de Tecnologia
5 * Lauro Ramos Venancio <lauro.venancio@openbossa.org>
6 * Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
22 #define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
24 #include <net/genetlink.h>
25 #include <linux/nfc.h>
26 #include <linux/slab.h>
31 static const struct genl_multicast_group nfc_genl_mcgrps[] = {
32 { .name = NFC_GENL_MCAST_EVENT_NAME, },
35 static struct genl_family nfc_genl_family = {
36 .id = GENL_ID_GENERATE,
38 .name = NFC_GENL_NAME,
39 .version = NFC_GENL_VERSION,
40 .maxattr = NFC_ATTR_MAX,
43 static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = {
44 [NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 },
45 [NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING,
46 .len = NFC_DEVICE_NAME_MAXSIZE },
47 [NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 },
48 [NFC_ATTR_COMM_MODE] = { .type = NLA_U8 },
49 [NFC_ATTR_RF_MODE] = { .type = NLA_U8 },
50 [NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 },
51 [NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 },
52 [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 },
53 [NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 },
54 [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 },
55 [NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 },
56 [NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED },
57 [NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING,
58 .len = NFC_FIRMWARE_NAME_MAXSIZE },
59 [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY },
62 static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = {
63 [NFC_SDP_ATTR_URI] = { .type = NLA_STRING },
64 [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 },
67 static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
68 struct netlink_callback *cb, int flags)
72 hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
73 &nfc_genl_family, flags, NFC_CMD_GET_TARGET);
77 genl_dump_check_consistent(cb, hdr, &nfc_genl_family);
79 if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) ||
80 nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) ||
81 nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) ||
82 nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res))
84 if (target->nfcid1_len > 0 &&
85 nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len,
88 if (target->sensb_res_len > 0 &&
89 nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len,
92 if (target->sensf_res_len > 0 &&
93 nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len,
97 return genlmsg_end(msg, hdr);
100 genlmsg_cancel(msg, hdr);
104 static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb)
110 rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize,
111 nfc_genl_family.attrbuf,
112 nfc_genl_family.maxattr,
117 if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX])
118 return ERR_PTR(-EINVAL);
120 idx = nla_get_u32(nfc_genl_family.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);
198 genlmsg_cancel(msg, hdr);
204 int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx)
209 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
213 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
214 NFC_EVENT_TARGET_LOST);
218 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
219 nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
220 goto nla_put_failure;
222 genlmsg_end(msg, hdr);
224 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
229 genlmsg_cancel(msg, hdr);
235 int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol)
240 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
244 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
245 NFC_EVENT_TM_ACTIVATED);
249 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
250 goto nla_put_failure;
251 if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol))
252 goto nla_put_failure;
254 genlmsg_end(msg, hdr);
256 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
261 genlmsg_cancel(msg, hdr);
267 int nfc_genl_tm_deactivated(struct nfc_dev *dev)
272 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
276 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
277 NFC_EVENT_TM_DEACTIVATED);
281 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
282 goto nla_put_failure;
284 genlmsg_end(msg, hdr);
286 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
291 genlmsg_cancel(msg, hdr);
297 int nfc_genl_device_added(struct nfc_dev *dev)
302 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
306 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
307 NFC_EVENT_DEVICE_ADDED);
311 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
312 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
313 nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
314 nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up))
315 goto nla_put_failure;
317 genlmsg_end(msg, hdr);
319 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
324 genlmsg_cancel(msg, hdr);
330 int nfc_genl_device_removed(struct nfc_dev *dev)
335 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
339 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
340 NFC_EVENT_DEVICE_REMOVED);
344 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
345 goto nla_put_failure;
347 genlmsg_end(msg, hdr);
349 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
354 genlmsg_cancel(msg, hdr);
360 int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list)
363 struct nlattr *sdp_attr, *uri_attr;
364 struct nfc_llcp_sdp_tlv *sdres;
365 struct hlist_node *n;
370 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
374 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
375 NFC_EVENT_LLC_SDRES);
379 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
380 goto nla_put_failure;
382 sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP);
383 if (sdp_attr == NULL) {
385 goto nla_put_failure;
389 hlist_for_each_entry_safe(sdres, n, sdres_list, node) {
390 pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap);
392 uri_attr = nla_nest_start(msg, i++);
393 if (uri_attr == NULL) {
395 goto nla_put_failure;
398 if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap))
399 goto nla_put_failure;
401 if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri))
402 goto nla_put_failure;
404 nla_nest_end(msg, uri_attr);
406 hlist_del(&sdres->node);
408 nfc_llcp_free_sdp_tlv(sdres);
411 nla_nest_end(msg, sdp_attr);
413 genlmsg_end(msg, hdr);
415 return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
418 genlmsg_cancel(msg, hdr);
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);
454 genlmsg_cancel(msg, hdr);
460 int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx)
465 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
469 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
470 NFC_EVENT_SE_REMOVED);
474 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
475 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx))
476 goto nla_put_failure;
478 genlmsg_end(msg, hdr);
480 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
485 genlmsg_cancel(msg, hdr);
491 static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
493 struct netlink_callback *cb,
498 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
504 genl_dump_check_consistent(cb, hdr, &nfc_genl_family);
506 if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
507 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
508 nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
509 nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) ||
510 nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode))
511 goto nla_put_failure;
513 return genlmsg_end(msg, hdr);
516 genlmsg_cancel(msg, hdr);
520 static int nfc_genl_dump_devices(struct sk_buff *skb,
521 struct netlink_callback *cb)
523 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
524 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
525 bool first_call = false;
529 iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
532 cb->args[0] = (long) iter;
535 mutex_lock(&nfc_devlist_mutex);
537 cb->seq = nfc_devlist_generation;
540 nfc_device_iter_init(iter);
541 dev = nfc_device_iter_next(iter);
547 rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid,
548 cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
552 dev = nfc_device_iter_next(iter);
555 mutex_unlock(&nfc_devlist_mutex);
557 cb->args[1] = (long) dev;
562 static int nfc_genl_dump_devices_done(struct netlink_callback *cb)
564 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
566 nfc_device_iter_exit(iter);
572 int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
573 u8 comm_mode, u8 rf_mode)
578 pr_debug("DEP link is up\n");
580 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
584 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP);
588 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
589 goto nla_put_failure;
590 if (rf_mode == NFC_RF_INITIATOR &&
591 nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
592 goto nla_put_failure;
593 if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) ||
594 nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode))
595 goto nla_put_failure;
597 genlmsg_end(msg, hdr);
599 dev->dep_link_up = true;
601 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
606 genlmsg_cancel(msg, hdr);
612 int nfc_genl_dep_link_down_event(struct nfc_dev *dev)
617 pr_debug("DEP link is down\n");
619 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
623 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
624 NFC_CMD_DEP_LINK_DOWN);
628 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
629 goto nla_put_failure;
631 genlmsg_end(msg, hdr);
633 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
638 genlmsg_cancel(msg, hdr);
644 static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info)
651 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
654 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
656 dev = nfc_get_device(idx);
660 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
666 rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq,
673 return genlmsg_reply(msg, info);
682 static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info)
688 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
691 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
693 dev = nfc_get_device(idx);
697 rc = nfc_dev_up(dev);
703 static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info)
709 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
712 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
714 dev = nfc_get_device(idx);
718 rc = nfc_dev_down(dev);
724 static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info)
729 u32 im_protocols = 0, tm_protocols = 0;
731 pr_debug("Poll start\n");
733 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
734 ((!info->attrs[NFC_ATTR_IM_PROTOCOLS] &&
735 !info->attrs[NFC_ATTR_PROTOCOLS]) &&
736 !info->attrs[NFC_ATTR_TM_PROTOCOLS]))
739 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
741 if (info->attrs[NFC_ATTR_TM_PROTOCOLS])
742 tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]);
744 if (info->attrs[NFC_ATTR_IM_PROTOCOLS])
745 im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]);
746 else if (info->attrs[NFC_ATTR_PROTOCOLS])
747 im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
749 dev = nfc_get_device(idx);
753 mutex_lock(&dev->genl_data.genl_data_mutex);
755 rc = nfc_start_poll(dev, im_protocols, tm_protocols);
757 dev->genl_data.poll_req_portid = info->snd_portid;
759 mutex_unlock(&dev->genl_data.genl_data_mutex);
765 static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
771 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
774 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
776 dev = nfc_get_device(idx);
780 device_lock(&dev->dev);
783 device_unlock(&dev->dev);
787 device_unlock(&dev->dev);
789 mutex_lock(&dev->genl_data.genl_data_mutex);
791 if (dev->genl_data.poll_req_portid != info->snd_portid) {
796 rc = nfc_stop_poll(dev);
797 dev->genl_data.poll_req_portid = 0;
800 mutex_unlock(&dev->genl_data.genl_data_mutex);
805 static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info)
812 pr_debug("DEP link up\n");
814 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
815 !info->attrs[NFC_ATTR_COMM_MODE])
818 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
819 if (!info->attrs[NFC_ATTR_TARGET_INDEX])
820 tgt_idx = NFC_TARGET_IDX_ANY;
822 tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
824 comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]);
826 if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE)
829 dev = nfc_get_device(idx);
833 rc = nfc_dep_link_up(dev, tgt_idx, comm);
840 static int nfc_genl_dep_link_down(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 rc = nfc_dep_link_down(dev);
861 static int nfc_genl_send_params(struct sk_buff *msg,
862 struct nfc_llcp_local *local,
867 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0,
868 NFC_CMD_LLC_GET_PARAMS);
872 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) ||
873 nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) ||
874 nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) ||
875 nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux)))
876 goto nla_put_failure;
878 return genlmsg_end(msg, hdr);
882 genlmsg_cancel(msg, hdr);
886 static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info)
889 struct nfc_llcp_local *local;
891 struct sk_buff *msg = NULL;
894 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
897 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
899 dev = nfc_get_device(idx);
903 device_lock(&dev->dev);
905 local = nfc_llcp_find_local(dev);
911 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
917 rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq);
920 device_unlock(&dev->dev);
931 return genlmsg_reply(msg, info);
934 static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
937 struct nfc_llcp_local *local;
943 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
944 (!info->attrs[NFC_ATTR_LLC_PARAM_LTO] &&
945 !info->attrs[NFC_ATTR_LLC_PARAM_RW] &&
946 !info->attrs[NFC_ATTR_LLC_PARAM_MIUX]))
949 if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) {
950 rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]);
952 if (rw > LLCP_MAX_RW)
956 if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) {
957 miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]);
959 if (miux > LLCP_MAX_MIUX)
963 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
965 dev = nfc_get_device(idx);
969 device_lock(&dev->dev);
971 local = nfc_llcp_find_local(dev);
978 if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) {
979 if (dev->dep_link_up) {
984 local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]);
987 if (info->attrs[NFC_ATTR_LLC_PARAM_RW])
990 if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX])
991 local->miux = cpu_to_be16(miux);
994 device_unlock(&dev->dev);
1001 static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
1003 struct nfc_dev *dev;
1004 struct nfc_llcp_local *local;
1005 struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1];
1010 size_t uri_len, tlvs_len;
1011 struct hlist_head sdreq_list;
1012 struct nfc_llcp_sdp_tlv *sdreq;
1014 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1015 !info->attrs[NFC_ATTR_LLC_SDP])
1018 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1020 dev = nfc_get_device(idx);
1026 device_lock(&dev->dev);
1028 if (dev->dep_link_up == false) {
1033 local = nfc_llcp_find_local(dev);
1035 nfc_put_device(dev);
1040 INIT_HLIST_HEAD(&sdreq_list);
1044 nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) {
1045 rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr,
1046 nfc_sdp_genl_policy);
1053 if (!sdp_attrs[NFC_SDP_ATTR_URI])
1056 uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]);
1060 uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]);
1061 if (uri == NULL || *uri == 0)
1064 tid = local->sdreq_next_tid++;
1066 sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len);
1067 if (sdreq == NULL) {
1072 tlvs_len += sdreq->tlv_len;
1074 hlist_add_head(&sdreq->node, &sdreq_list);
1077 if (hlist_empty(&sdreq_list)) {
1082 rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len);
1084 device_unlock(&dev->dev);
1086 nfc_put_device(dev);
1091 static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info)
1093 struct nfc_dev *dev;
1096 char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
1098 if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
1101 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1103 dev = nfc_get_device(idx);
1107 nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME],
1108 sizeof(firmware_name));
1110 rc = nfc_fw_download(dev, firmware_name);
1112 nfc_put_device(dev);
1116 int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
1119 struct sk_buff *msg;
1122 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1126 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
1127 NFC_CMD_FW_DOWNLOAD);
1131 if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) ||
1132 nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) ||
1133 nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
1134 goto nla_put_failure;
1136 genlmsg_end(msg, hdr);
1138 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
1143 genlmsg_cancel(msg, hdr);
1149 static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info)
1151 struct nfc_dev *dev;
1155 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1156 !info->attrs[NFC_ATTR_SE_INDEX])
1159 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1160 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1162 dev = nfc_get_device(idx);
1166 rc = nfc_enable_se(dev, se_idx);
1168 nfc_put_device(dev);
1172 static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info)
1174 struct nfc_dev *dev;
1178 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1179 !info->attrs[NFC_ATTR_SE_INDEX])
1182 idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1183 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1185 dev = nfc_get_device(idx);
1189 rc = nfc_disable_se(dev, se_idx);
1191 nfc_put_device(dev);
1195 static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev,
1196 u32 portid, u32 seq,
1197 struct netlink_callback *cb,
1201 struct nfc_se *se, *n;
1203 list_for_each_entry_safe(se, n, &dev->secure_elements, list) {
1204 hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
1207 goto nla_put_failure;
1210 genl_dump_check_consistent(cb, hdr, &nfc_genl_family);
1212 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
1213 nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) ||
1214 nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
1215 goto nla_put_failure;
1217 if (genlmsg_end(msg, hdr) < 0)
1218 goto nla_put_failure;
1224 genlmsg_cancel(msg, hdr);
1228 static int nfc_genl_dump_ses(struct sk_buff *skb,
1229 struct netlink_callback *cb)
1231 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
1232 struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
1233 bool first_call = false;
1237 iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
1240 cb->args[0] = (long) iter;
1243 mutex_lock(&nfc_devlist_mutex);
1245 cb->seq = nfc_devlist_generation;
1248 nfc_device_iter_init(iter);
1249 dev = nfc_device_iter_next(iter);
1255 rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid,
1256 cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
1260 dev = nfc_device_iter_next(iter);
1263 mutex_unlock(&nfc_devlist_mutex);
1265 cb->args[1] = (long) dev;
1270 static int nfc_genl_dump_ses_done(struct netlink_callback *cb)
1272 struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
1274 nfc_device_iter_exit(iter);
1285 static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err)
1287 struct se_io_ctx *ctx = context;
1288 struct sk_buff *msg;
1291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
1297 hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
1302 if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) ||
1303 nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) ||
1304 nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu))
1305 goto nla_put_failure;
1307 genlmsg_end(msg, hdr);
1309 genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
1316 genlmsg_cancel(msg, hdr);
1324 static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info)
1326 struct nfc_dev *dev;
1327 struct se_io_ctx *ctx;
1328 u32 dev_idx, se_idx;
1332 if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
1333 !info->attrs[NFC_ATTR_SE_INDEX] ||
1334 !info->attrs[NFC_ATTR_SE_APDU])
1337 dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
1338 se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
1340 dev = nfc_get_device(dev_idx);
1344 if (!dev->ops || !dev->ops->se_io)
1347 apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]);
1351 apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]);
1355 ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL);
1359 ctx->dev_idx = dev_idx;
1360 ctx->se_idx = se_idx;
1362 return dev->ops->se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
1365 static const struct genl_ops nfc_genl_ops[] = {
1367 .cmd = NFC_CMD_GET_DEVICE,
1368 .doit = nfc_genl_get_device,
1369 .dumpit = nfc_genl_dump_devices,
1370 .done = nfc_genl_dump_devices_done,
1371 .policy = nfc_genl_policy,
1374 .cmd = NFC_CMD_DEV_UP,
1375 .doit = nfc_genl_dev_up,
1376 .policy = nfc_genl_policy,
1379 .cmd = NFC_CMD_DEV_DOWN,
1380 .doit = nfc_genl_dev_down,
1381 .policy = nfc_genl_policy,
1384 .cmd = NFC_CMD_START_POLL,
1385 .doit = nfc_genl_start_poll,
1386 .policy = nfc_genl_policy,
1389 .cmd = NFC_CMD_STOP_POLL,
1390 .doit = nfc_genl_stop_poll,
1391 .policy = nfc_genl_policy,
1394 .cmd = NFC_CMD_DEP_LINK_UP,
1395 .doit = nfc_genl_dep_link_up,
1396 .policy = nfc_genl_policy,
1399 .cmd = NFC_CMD_DEP_LINK_DOWN,
1400 .doit = nfc_genl_dep_link_down,
1401 .policy = nfc_genl_policy,
1404 .cmd = NFC_CMD_GET_TARGET,
1405 .dumpit = nfc_genl_dump_targets,
1406 .done = nfc_genl_dump_targets_done,
1407 .policy = nfc_genl_policy,
1410 .cmd = NFC_CMD_LLC_GET_PARAMS,
1411 .doit = nfc_genl_llc_get_params,
1412 .policy = nfc_genl_policy,
1415 .cmd = NFC_CMD_LLC_SET_PARAMS,
1416 .doit = nfc_genl_llc_set_params,
1417 .policy = nfc_genl_policy,
1420 .cmd = NFC_CMD_LLC_SDREQ,
1421 .doit = nfc_genl_llc_sdreq,
1422 .policy = nfc_genl_policy,
1425 .cmd = NFC_CMD_FW_DOWNLOAD,
1426 .doit = nfc_genl_fw_download,
1427 .policy = nfc_genl_policy,
1430 .cmd = NFC_CMD_ENABLE_SE,
1431 .doit = nfc_genl_enable_se,
1432 .policy = nfc_genl_policy,
1435 .cmd = NFC_CMD_DISABLE_SE,
1436 .doit = nfc_genl_disable_se,
1437 .policy = nfc_genl_policy,
1440 .cmd = NFC_CMD_GET_SE,
1441 .dumpit = nfc_genl_dump_ses,
1442 .done = nfc_genl_dump_ses_done,
1443 .policy = nfc_genl_policy,
1446 .cmd = NFC_CMD_SE_IO,
1447 .doit = nfc_genl_se_io,
1448 .policy = nfc_genl_policy,
1453 struct urelease_work {
1454 struct work_struct w;
1458 static void nfc_urelease_event_work(struct work_struct *work)
1460 struct urelease_work *w = container_of(work, struct urelease_work, w);
1461 struct class_dev_iter iter;
1462 struct nfc_dev *dev;
1464 pr_debug("portid %d\n", w->portid);
1466 mutex_lock(&nfc_devlist_mutex);
1468 nfc_device_iter_init(&iter);
1469 dev = nfc_device_iter_next(&iter);
1472 mutex_lock(&dev->genl_data.genl_data_mutex);
1474 if (dev->genl_data.poll_req_portid == w->portid) {
1476 dev->genl_data.poll_req_portid = 0;
1479 mutex_unlock(&dev->genl_data.genl_data_mutex);
1481 dev = nfc_device_iter_next(&iter);
1484 nfc_device_iter_exit(&iter);
1486 mutex_unlock(&nfc_devlist_mutex);
1491 static int nfc_genl_rcv_nl_event(struct notifier_block *this,
1492 unsigned long event, void *ptr)
1494 struct netlink_notify *n = ptr;
1495 struct urelease_work *w;
1497 if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC)
1500 pr_debug("NETLINK_URELEASE event from id %d\n", n->portid);
1502 w = kmalloc(sizeof(*w), GFP_ATOMIC);
1504 INIT_WORK((struct work_struct *) w, nfc_urelease_event_work);
1505 w->portid = n->portid;
1506 schedule_work((struct work_struct *) w);
1513 void nfc_genl_data_init(struct nfc_genl_data *genl_data)
1515 genl_data->poll_req_portid = 0;
1516 mutex_init(&genl_data->genl_data_mutex);
1519 void nfc_genl_data_exit(struct nfc_genl_data *genl_data)
1521 mutex_destroy(&genl_data->genl_data_mutex);
1524 static struct notifier_block nl_notifier = {
1525 .notifier_call = nfc_genl_rcv_nl_event,
1529 * nfc_genl_init() - Initialize netlink interface
1531 * This initialization function registers the nfc netlink family.
1533 int __init nfc_genl_init(void)
1537 rc = genl_register_family_with_ops_groups(&nfc_genl_family,
1543 netlink_register_notifier(&nl_notifier);
1549 * nfc_genl_exit() - Deinitialize netlink interface
1551 * This exit function unregisters the nfc netlink family.
1553 void nfc_genl_exit(void)
1555 netlink_unregister_notifier(&nl_notifier);
1556 genl_unregister_family(&nfc_genl_family);