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Diffstat (limited to 'net/nfc/netlink.c')
-rw-r--r--net/nfc/netlink.c803
1 files changed, 679 insertions, 124 deletions
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index b05ad909778f..a18e2c503da6 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2011 Instituto Nokia de Tecnologia
*
@@ -5,20 +6,11 @@
* Lauro Ramos Venancio <lauro.venancio@openbossa.org>
* Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Vendor commands implementation based on net/wireless/nl80211.c
+ * which is:
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the
- * Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2013-2014 Intel Mobile Communications GmbH
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
@@ -30,23 +22,17 @@
#include "nfc.h"
#include "llcp.h"
-static struct genl_multicast_group nfc_genl_event_mcgrp = {
- .name = NFC_GENL_MCAST_EVENT_NAME,
-};
-
-static struct genl_family nfc_genl_family = {
- .id = GENL_ID_GENERATE,
- .hdrsize = 0,
- .name = NFC_GENL_NAME,
- .version = NFC_GENL_VERSION,
- .maxattr = NFC_ATTR_MAX,
+static const struct genl_multicast_group nfc_genl_mcgrps[] = {
+ { .name = NFC_GENL_MCAST_EVENT_NAME, },
};
+static struct genl_family nfc_genl_family;
static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = {
[NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 },
[NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING,
.len = NFC_DEVICE_NAME_MAXSIZE },
[NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 },
+ [NFC_ATTR_TARGET_INDEX] = { .type = NLA_U32 },
[NFC_ATTR_COMM_MODE] = { .type = NLA_U8 },
[NFC_ATTR_RF_MODE] = { .type = NLA_U8 },
[NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 },
@@ -58,10 +44,17 @@ static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = {
[NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED },
[NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING,
.len = NFC_FIRMWARE_NAME_MAXSIZE },
+ [NFC_ATTR_SE_INDEX] = { .type = NLA_U32 },
+ [NFC_ATTR_SE_APDU] = { .type = NLA_BINARY },
+ [NFC_ATTR_VENDOR_ID] = { .type = NLA_U32 },
+ [NFC_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
+ [NFC_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
+
};
static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = {
- [NFC_SDP_ATTR_URI] = { .type = NLA_STRING },
+ [NFC_SDP_ATTR_URI] = { .type = NLA_STRING,
+ .len = U8_MAX - 4 },
[NFC_SDP_ATTR_SAP] = { .type = NLA_U8 },
};
@@ -75,7 +68,7 @@ static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
if (!hdr)
return -EMSGSIZE;
- genl_dump_check_consistent(cb, hdr, &nfc_genl_family);
+ genl_dump_check_consistent(cb, hdr);
if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) ||
nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) ||
@@ -95,7 +88,21 @@ static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
target->sensf_res))
goto nla_put_failure;
- return genlmsg_end(msg, hdr);
+ if (target->is_iso15693) {
+ if (nla_put_u8(msg, NFC_ATTR_TARGET_ISO15693_DSFID,
+ target->iso15693_dsfid) ||
+ nla_put(msg, NFC_ATTR_TARGET_ISO15693_UID,
+ sizeof(target->iso15693_uid), target->iso15693_uid))
+ goto nla_put_failure;
+ }
+
+ if (target->ats_len > 0 &&
+ nla_put(msg, NFC_ATTR_TARGET_ATS, target->ats_len,
+ target->ats))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
@@ -104,21 +111,14 @@ nla_put_failure:
static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb)
{
+ const struct genl_dumpit_info *info = genl_dumpit_info(cb);
struct nfc_dev *dev;
- int rc;
u32 idx;
- rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize,
- nfc_genl_family.attrbuf,
- nfc_genl_family.maxattr,
- nfc_genl_policy);
- if (rc < 0)
- return ERR_PTR(rc);
-
- if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX])
+ if (!info->info.attrs[NFC_ATTR_DEVICE_INDEX])
return ERR_PTR(-EINVAL);
- idx = nla_get_u32(nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]);
+ idx = nla_get_u32(info->info.attrs[NFC_ATTR_DEVICE_INDEX]);
dev = nfc_get_device(idx);
if (!dev)
@@ -193,10 +193,9 @@ int nfc_genl_targets_found(struct nfc_dev *dev)
genlmsg_end(msg, hdr);
- return genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_ATOMIC);
+ return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -222,12 +221,11 @@ int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx)
genlmsg_end(msg, hdr);
- genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
return 0;
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -254,12 +252,11 @@ int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol)
genlmsg_end(msg, hdr);
- genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
return 0;
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -284,17 +281,27 @@ int nfc_genl_tm_deactivated(struct nfc_dev *dev)
genlmsg_end(msg, hdr);
- genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
return 0;
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
}
+static int nfc_genl_setup_device_added(struct nfc_dev *dev, struct sk_buff *msg)
+{
+ if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
+ nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+ nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
+ nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) ||
+ nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode))
+ return -1;
+ return 0;
+}
+
int nfc_genl_device_added(struct nfc_dev *dev)
{
struct sk_buff *msg;
@@ -309,20 +316,16 @@ int nfc_genl_device_added(struct nfc_dev *dev)
if (!hdr)
goto free_msg;
- if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
- nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
- nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
- nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up))
+ if (nfc_genl_setup_device_added(dev, msg))
goto nla_put_failure;
genlmsg_end(msg, hdr);
- genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
return 0;
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -347,12 +350,11 @@ int nfc_genl_device_removed(struct nfc_dev *dev)
genlmsg_end(msg, hdr);
- genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
return 0;
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -380,7 +382,7 @@ int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list)
if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
goto nla_put_failure;
- sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP);
+ sdp_attr = nla_nest_start_noflag(msg, NFC_ATTR_LLC_SDP);
if (sdp_attr == NULL) {
rc = -ENOMEM;
goto nla_put_failure;
@@ -390,7 +392,7 @@ int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list)
hlist_for_each_entry_safe(sdres, n, sdres_list, node) {
pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap);
- uri_attr = nla_nest_start(msg, i++);
+ uri_attr = nla_nest_start_noflag(msg, i++);
if (uri_attr == NULL) {
rc = -ENOMEM;
goto nla_put_failure;
@@ -413,11 +415,9 @@ int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list)
genlmsg_end(msg, hdr);
- return genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_ATOMIC);
+ return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
nla_put_failure:
- genlmsg_cancel(msg, hdr);
-
free_msg:
nlmsg_free(msg);
@@ -447,12 +447,11 @@ int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type)
genlmsg_end(msg, hdr);
- genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
return 0;
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -478,12 +477,93 @@ int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx)
genlmsg_end(msg, hdr);
- genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+ return 0;
+
+nla_put_failure:
+free_msg:
+ nlmsg_free(msg);
+ return -EMSGSIZE;
+}
+
+int nfc_genl_se_transaction(struct nfc_dev *dev, u8 se_idx,
+ struct nfc_evt_transaction *evt_transaction)
+{
+ struct nfc_se *se;
+ struct sk_buff *msg;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+ NFC_EVENT_SE_TRANSACTION);
+ if (!hdr)
+ goto free_msg;
+
+ se = nfc_find_se(dev, se_idx);
+ if (!se)
+ goto free_msg;
+
+ if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+ nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
+ nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type) ||
+ nla_put(msg, NFC_ATTR_SE_AID, evt_transaction->aid_len,
+ evt_transaction->aid) ||
+ nla_put(msg, NFC_ATTR_SE_PARAMS, evt_transaction->params_len,
+ evt_transaction->params))
+ goto nla_put_failure;
+
+ /* evt_transaction is no more used */
+ devm_kfree(&dev->dev, evt_transaction);
+
+ genlmsg_end(msg, hdr);
+
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+ return 0;
+
+nla_put_failure:
+free_msg:
+ /* evt_transaction is no more used */
+ devm_kfree(&dev->dev, evt_transaction);
+ nlmsg_free(msg);
+ return -EMSGSIZE;
+}
+
+int nfc_genl_se_connectivity(struct nfc_dev *dev, u8 se_idx)
+{
+ const struct nfc_se *se;
+ struct sk_buff *msg;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+ NFC_EVENT_SE_CONNECTIVITY);
+ if (!hdr)
+ goto free_msg;
+
+ se = nfc_find_se(dev, se_idx);
+ if (!se)
+ goto free_msg;
+
+ if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+ nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx) ||
+ nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
return 0;
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -502,16 +582,13 @@ static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
return -EMSGSIZE;
if (cb)
- genl_dump_check_consistent(cb, hdr, &nfc_genl_family);
+ genl_dump_check_consistent(cb, hdr);
- if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
- nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
- nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
- nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) ||
- nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode))
+ if (nfc_genl_setup_device_added(dev, msg))
goto nla_put_failure;
- return genlmsg_end(msg, hdr);
+ genlmsg_end(msg, hdr);
+ return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
@@ -564,8 +641,10 @@ static int nfc_genl_dump_devices_done(struct netlink_callback *cb)
{
struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
- nfc_device_iter_exit(iter);
- kfree(iter);
+ if (iter) {
+ nfc_device_iter_exit(iter);
+ kfree(iter);
+ }
return 0;
}
@@ -599,12 +678,11 @@ int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
dev->dep_link_up = true;
- genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_ATOMIC);
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
return 0;
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -631,12 +709,11 @@ int nfc_genl_dep_link_down_event(struct nfc_dev *dev)
genlmsg_end(msg, hdr);
- genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_ATOMIC);
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
return 0;
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -782,6 +859,7 @@ static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
if (!dev->polling) {
device_unlock(&dev->dev);
+ nfc_put_device(dev);
return -EINVAL;
}
@@ -803,6 +881,58 @@ out:
return rc;
}
+static int nfc_genl_activate_target(struct sk_buff *skb, struct genl_info *info)
+{
+ struct nfc_dev *dev;
+ u32 device_idx, target_idx, protocol;
+ int rc;
+
+ if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+ !info->attrs[NFC_ATTR_TARGET_INDEX] ||
+ !info->attrs[NFC_ATTR_PROTOCOLS])
+ return -EINVAL;
+
+ device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+ dev = nfc_get_device(device_idx);
+ if (!dev)
+ return -ENODEV;
+
+ target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
+ protocol = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
+
+ nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
+ rc = nfc_activate_target(dev, target_idx, protocol);
+
+ nfc_put_device(dev);
+ return rc;
+}
+
+static int nfc_genl_deactivate_target(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nfc_dev *dev;
+ u32 device_idx, target_idx;
+ int rc;
+
+ if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+ !info->attrs[NFC_ATTR_TARGET_INDEX])
+ return -EINVAL;
+
+ device_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+
+ dev = nfc_get_device(device_idx);
+ if (!dev)
+ return -ENODEV;
+
+ target_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
+
+ rc = nfc_deactivate_target(dev, target_idx, NFC_TARGET_MODE_SLEEP);
+
+ nfc_put_device(dev);
+ return rc;
+}
+
static int nfc_genl_dep_link_up(struct sk_buff *skb, struct genl_info *info)
{
struct nfc_dev *dev;
@@ -876,10 +1006,10 @@ static int nfc_genl_send_params(struct sk_buff *msg,
nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux)))
goto nla_put_failure;
- return genlmsg_end(msg, hdr);
+ genlmsg_end(msg, hdr);
+ return 0;
nla_put_failure:
-
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
@@ -912,11 +1042,14 @@ static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info)
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg) {
rc = -ENOMEM;
- goto exit;
+ goto put_local;
}
rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq);
+put_local:
+ nfc_llcp_local_put(local);
+
exit:
device_unlock(&dev->dev);
@@ -971,7 +1104,6 @@ static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
local = nfc_llcp_find_local(dev);
if (!local) {
- nfc_put_device(dev);
rc = -ENODEV;
goto exit;
}
@@ -979,7 +1111,7 @@ static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) {
if (dev->dep_link_up) {
rc = -EINPROGRESS;
- goto exit;
+ goto put_local;
}
local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]);
@@ -991,6 +1123,9 @@ static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX])
local->miux = cpu_to_be16(miux);
+put_local:
+ nfc_llcp_local_put(local);
+
exit:
device_unlock(&dev->dev);
@@ -1019,10 +1154,8 @@ static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
dev = nfc_get_device(idx);
- if (!dev) {
- rc = -ENODEV;
- goto exit;
- }
+ if (!dev)
+ return -ENODEV;
device_lock(&dev->dev);
@@ -1033,7 +1166,6 @@ static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
local = nfc_llcp_find_local(dev);
if (!local) {
- nfc_put_device(dev);
rc = -ENODEV;
goto exit;
}
@@ -1043,12 +1175,13 @@ static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
tlvs_len = 0;
nla_for_each_nested(attr, info->attrs[NFC_ATTR_LLC_SDP], rem) {
- rc = nla_parse_nested(sdp_attrs, NFC_SDP_ATTR_MAX, attr,
- nfc_sdp_genl_policy);
+ rc = nla_parse_nested_deprecated(sdp_attrs, NFC_SDP_ATTR_MAX,
+ attr, nfc_sdp_genl_policy,
+ info->extack);
if (rc != 0) {
rc = -EINVAL;
- goto exit;
+ goto put_local;
}
if (!sdp_attrs[NFC_SDP_ATTR_URI])
@@ -1059,7 +1192,7 @@ static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
continue;
uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]);
- if (uri == NULL || *uri == 0)
+ if (*uri == 0)
continue;
tid = local->sdreq_next_tid++;
@@ -1067,7 +1200,7 @@ static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len);
if (sdreq == NULL) {
rc = -ENOMEM;
- goto exit;
+ goto put_local;
}
tlvs_len += sdreq->tlv_len;
@@ -1077,10 +1210,14 @@ static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
if (hlist_empty(&sdreq_list)) {
rc = -EINVAL;
- goto exit;
+ goto put_local;
}
rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len);
+
+put_local:
+ nfc_llcp_local_put(local);
+
exit:
device_unlock(&dev->dev);
@@ -1089,14 +1226,14 @@ exit:
return rc;
}
-static int nfc_genl_fw_upload(struct sk_buff *skb, struct genl_info *info)
+static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info)
{
struct nfc_dev *dev;
int rc;
u32 idx;
char firmware_name[NFC_FIRMWARE_NAME_MAXSIZE + 1];
- if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
+ if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || !info->attrs[NFC_ATTR_FIRMWARE_NAME])
return -EINVAL;
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
@@ -1105,41 +1242,42 @@ static int nfc_genl_fw_upload(struct sk_buff *skb, struct genl_info *info)
if (!dev)
return -ENODEV;
- nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME],
+ nla_strscpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME],
sizeof(firmware_name));
- rc = nfc_fw_upload(dev, firmware_name);
+ rc = nfc_fw_download(dev, firmware_name);
nfc_put_device(dev);
return rc;
}
-int nfc_genl_fw_upload_done(struct nfc_dev *dev, const char *firmware_name)
+int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name,
+ u32 result)
{
struct sk_buff *msg;
void *hdr;
- msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
if (!msg)
return -ENOMEM;
hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
- NFC_CMD_FW_UPLOAD);
+ NFC_CMD_FW_DOWNLOAD);
if (!hdr)
goto free_msg;
if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) ||
+ nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) ||
nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
goto nla_put_failure;
genlmsg_end(msg, hdr);
- genlmsg_multicast(msg, 0, nfc_genl_event_mcgrp.id, GFP_KERNEL);
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC);
return 0;
nla_put_failure:
- genlmsg_cancel(msg, hdr);
free_msg:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -1191,86 +1329,506 @@ static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info)
return rc;
}
-static struct genl_ops nfc_genl_ops[] = {
+static int nfc_genl_send_se(struct sk_buff *msg, struct nfc_dev *dev,
+ u32 portid, u32 seq,
+ struct netlink_callback *cb,
+ int flags)
+{
+ void *hdr;
+ struct nfc_se *se, *n;
+
+ list_for_each_entry_safe(se, n, &dev->secure_elements, list) {
+ hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
+ NFC_CMD_GET_SE);
+ if (!hdr)
+ goto nla_put_failure;
+
+ if (cb)
+ genl_dump_check_consistent(cb, hdr);
+
+ if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
+ nla_put_u32(msg, NFC_ATTR_SE_INDEX, se->idx) ||
+ nla_put_u8(msg, NFC_ATTR_SE_TYPE, se->type))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+ }
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+static int nfc_genl_dump_ses(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
+ struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
+ bool first_call = false;
+
+ if (!iter) {
+ first_call = true;
+ iter = kmalloc(sizeof(struct class_dev_iter), GFP_KERNEL);
+ if (!iter)
+ return -ENOMEM;
+ cb->args[0] = (long) iter;
+ }
+
+ mutex_lock(&nfc_devlist_mutex);
+
+ cb->seq = nfc_devlist_generation;
+
+ if (first_call) {
+ nfc_device_iter_init(iter);
+ dev = nfc_device_iter_next(iter);
+ }
+
+ while (dev) {
+ int rc;
+
+ rc = nfc_genl_send_se(skb, dev, NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq, cb, NLM_F_MULTI);
+ if (rc < 0)
+ break;
+
+ dev = nfc_device_iter_next(iter);
+ }
+
+ mutex_unlock(&nfc_devlist_mutex);
+
+ cb->args[1] = (long) dev;
+
+ return skb->len;
+}
+
+static int nfc_genl_dump_ses_done(struct netlink_callback *cb)
+{
+ struct class_dev_iter *iter = (struct class_dev_iter *) cb->args[0];
+
+ if (iter) {
+ nfc_device_iter_exit(iter);
+ kfree(iter);
+ }
+
+ return 0;
+}
+
+static int nfc_se_io(struct nfc_dev *dev, u32 se_idx,
+ u8 *apdu, size_t apdu_length,
+ se_io_cb_t cb, void *cb_context)
+{
+ struct nfc_se *se;
+ int rc;
+
+ pr_debug("%s se index %d\n", dev_name(&dev->dev), se_idx);
+
+ device_lock(&dev->dev);
+
+ if (!device_is_registered(&dev->dev)) {
+ rc = -ENODEV;
+ goto error;
+ }
+
+ if (!dev->dev_up) {
+ rc = -ENODEV;
+ goto error;
+ }
+
+ if (!dev->ops->se_io) {
+ rc = -EOPNOTSUPP;
+ goto error;
+ }
+
+ se = nfc_find_se(dev, se_idx);
+ if (!se) {
+ rc = -EINVAL;
+ goto error;
+ }
+
+ if (se->state != NFC_SE_ENABLED) {
+ rc = -ENODEV;
+ goto error;
+ }
+
+ rc = dev->ops->se_io(dev, se_idx, apdu,
+ apdu_length, cb, cb_context);
+
+ device_unlock(&dev->dev);
+ return rc;
+
+error:
+ device_unlock(&dev->dev);
+ kfree(cb_context);
+ return rc;
+}
+
+struct se_io_ctx {
+ u32 dev_idx;
+ u32 se_idx;
+};
+
+static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err)
+{
+ struct se_io_ctx *ctx = context;
+ struct sk_buff *msg;
+ void *hdr;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg) {
+ kfree(ctx);
+ return;
+ }
+
+ hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
+ NFC_CMD_SE_IO);
+ if (!hdr)
+ goto free_msg;
+
+ if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, ctx->dev_idx) ||
+ nla_put_u32(msg, NFC_ATTR_SE_INDEX, ctx->se_idx) ||
+ nla_put(msg, NFC_ATTR_SE_APDU, apdu_len, apdu))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL);
+
+ kfree(ctx);
+
+ return;
+
+nla_put_failure:
+free_msg:
+ nlmsg_free(msg);
+ kfree(ctx);
+
+ return;
+}
+
+static int nfc_genl_se_io(struct sk_buff *skb, struct genl_info *info)
+{
+ struct nfc_dev *dev;
+ struct se_io_ctx *ctx;
+ u32 dev_idx, se_idx;
+ u8 *apdu;
+ size_t apdu_len;
+ int rc;
+
+ if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+ !info->attrs[NFC_ATTR_SE_INDEX] ||
+ !info->attrs[NFC_ATTR_SE_APDU])
+ return -EINVAL;
+
+ dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+ se_idx = nla_get_u32(info->attrs[NFC_ATTR_SE_INDEX]);
+
+ dev = nfc_get_device(dev_idx);
+ if (!dev)
+ return -ENODEV;
+
+ if (!dev->ops || !dev->ops->se_io) {
+ rc = -EOPNOTSUPP;
+ goto put_dev;
+ }
+
+ apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]);
+ if (apdu_len == 0) {
+ rc = -EINVAL;
+ goto put_dev;
+ }
+
+ apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]);
+
+ ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL);
+ if (!ctx) {
+ rc = -ENOMEM;
+ goto put_dev;
+ }
+
+ ctx->dev_idx = dev_idx;
+ ctx->se_idx = se_idx;
+
+ rc = nfc_se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
+
+put_dev:
+ nfc_put_device(dev);
+ return rc;
+}
+
+static int nfc_genl_vendor_cmd(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct nfc_dev *dev;
+ const struct nfc_vendor_cmd *cmd;
+ u32 dev_idx, vid, subcmd;
+ u8 *data;
+ size_t data_len;
+ int i, err;
+
+ if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
+ !info->attrs[NFC_ATTR_VENDOR_ID] ||
+ !info->attrs[NFC_ATTR_VENDOR_SUBCMD])
+ return -EINVAL;
+
+ dev_idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
+ vid = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_ID]);
+ subcmd = nla_get_u32(info->attrs[NFC_ATTR_VENDOR_SUBCMD]);
+
+ dev = nfc_get_device(dev_idx);
+ if (!dev)
+ return -ENODEV;
+
+ if (!dev->vendor_cmds || !dev->n_vendor_cmds) {
+ err = -ENODEV;
+ goto put_dev;
+ }
+
+ if (info->attrs[NFC_ATTR_VENDOR_DATA]) {
+ data = nla_data(info->attrs[NFC_ATTR_VENDOR_DATA]);
+ data_len = nla_len(info->attrs[NFC_ATTR_VENDOR_DATA]);
+ if (data_len == 0) {
+ err = -EINVAL;
+ goto put_dev;
+ }
+ } else {
+ data = NULL;
+ data_len = 0;
+ }
+
+ for (i = 0; i < dev->n_vendor_cmds; i++) {
+ cmd = &dev->vendor_cmds[i];
+
+ if (cmd->vendor_id != vid || cmd->subcmd != subcmd)
+ continue;
+
+ dev->cur_cmd_info = info;
+ err = cmd->doit(dev, data, data_len);
+ dev->cur_cmd_info = NULL;
+ goto put_dev;
+ }
+
+ err = -EOPNOTSUPP;
+
+put_dev:
+ nfc_put_device(dev);
+ return err;
+}
+
+/* message building helper */
+static inline void *nfc_hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
+ int flags, u8 cmd)
+{
+ /* since there is no private header just add the generic one */
+ return genlmsg_put(skb, portid, seq, &nfc_genl_family, flags, cmd);
+}
+
+static struct sk_buff *
+__nfc_alloc_vendor_cmd_skb(struct nfc_dev *dev, int approxlen,
+ u32 portid, u32 seq,
+ enum nfc_attrs attr,
+ u32 oui, u32 subcmd, gfp_t gfp)
+{
+ struct sk_buff *skb;
+ void *hdr;
+
+ skb = nlmsg_new(approxlen + 100, gfp);
+ if (!skb)
+ return NULL;
+
+ hdr = nfc_hdr_put(skb, portid, seq, 0, NFC_CMD_VENDOR);
+ if (!hdr) {
+ kfree_skb(skb);
+ return NULL;
+ }
+
+ if (nla_put_u32(skb, NFC_ATTR_DEVICE_INDEX, dev->idx))
+ goto nla_put_failure;
+ if (nla_put_u32(skb, NFC_ATTR_VENDOR_ID, oui))
+ goto nla_put_failure;
+ if (nla_put_u32(skb, NFC_ATTR_VENDOR_SUBCMD, subcmd))
+ goto nla_put_failure;
+
+ ((void **)skb->cb)[0] = dev;
+ ((void **)skb->cb)[1] = hdr;
+
+ return skb;
+
+nla_put_failure:
+ kfree_skb(skb);
+ return NULL;
+}
+
+struct sk_buff *__nfc_alloc_vendor_cmd_reply_skb(struct nfc_dev *dev,
+ enum nfc_attrs attr,
+ u32 oui, u32 subcmd,
+ int approxlen)
+{
+ if (WARN_ON(!dev->cur_cmd_info))
+ return NULL;
+
+ return __nfc_alloc_vendor_cmd_skb(dev, approxlen,
+ dev->cur_cmd_info->snd_portid,
+ dev->cur_cmd_info->snd_seq, attr,
+ oui, subcmd, GFP_KERNEL);
+}
+EXPORT_SYMBOL(__nfc_alloc_vendor_cmd_reply_skb);
+
+int nfc_vendor_cmd_reply(struct sk_buff *skb)
+{
+ struct nfc_dev *dev = ((void **)skb->cb)[0];
+ void *hdr = ((void **)skb->cb)[1];
+
+ /* clear CB data for netlink core to own from now on */
+ memset(skb->cb, 0, sizeof(skb->cb));
+
+ if (WARN_ON(!dev->cur_cmd_info)) {
+ kfree_skb(skb);
+ return -EINVAL;
+ }
+
+ genlmsg_end(skb, hdr);
+ return genlmsg_reply(skb, dev->cur_cmd_info);
+}
+EXPORT_SYMBOL(nfc_vendor_cmd_reply);
+
+static const struct genl_ops nfc_genl_ops[] = {
{
.cmd = NFC_CMD_GET_DEVICE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_get_device,
.dumpit = nfc_genl_dump_devices,
.done = nfc_genl_dump_devices_done,
- .policy = nfc_genl_policy,
},
{
.cmd = NFC_CMD_DEV_UP,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_dev_up,
- .policy = nfc_genl_policy,
+ .flags = GENL_ADMIN_PERM,
},
{
.cmd = NFC_CMD_DEV_DOWN,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_dev_down,
- .policy = nfc_genl_policy,
+ .flags = GENL_ADMIN_PERM,
},
{
.cmd = NFC_CMD_START_POLL,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_start_poll,
- .policy = nfc_genl_policy,
+ .flags = GENL_ADMIN_PERM,
},
{
.cmd = NFC_CMD_STOP_POLL,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_stop_poll,
- .policy = nfc_genl_policy,
+ .flags = GENL_ADMIN_PERM,
},
{
.cmd = NFC_CMD_DEP_LINK_UP,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_dep_link_up,
- .policy = nfc_genl_policy,
+ .flags = GENL_ADMIN_PERM,
},
{
.cmd = NFC_CMD_DEP_LINK_DOWN,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_dep_link_down,
- .policy = nfc_genl_policy,
+ .flags = GENL_ADMIN_PERM,
},
{
.cmd = NFC_CMD_GET_TARGET,
+ .validate = GENL_DONT_VALIDATE_STRICT |
+ GENL_DONT_VALIDATE_DUMP_STRICT,
.dumpit = nfc_genl_dump_targets,
.done = nfc_genl_dump_targets_done,
- .policy = nfc_genl_policy,
},
{
.cmd = NFC_CMD_LLC_GET_PARAMS,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_llc_get_params,
- .policy = nfc_genl_policy,
},
{
.cmd = NFC_CMD_LLC_SET_PARAMS,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_llc_set_params,
- .policy = nfc_genl_policy,
+ .flags = GENL_ADMIN_PERM,
},
{
.cmd = NFC_CMD_LLC_SDREQ,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_llc_sdreq,
- .policy = nfc_genl_policy,
+ .flags = GENL_ADMIN_PERM,
},
{
- .cmd = NFC_CMD_FW_UPLOAD,
- .doit = nfc_genl_fw_upload,
- .policy = nfc_genl_policy,
+ .cmd = NFC_CMD_FW_DOWNLOAD,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = nfc_genl_fw_download,
+ .flags = GENL_ADMIN_PERM,
},
{
.cmd = NFC_CMD_ENABLE_SE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_enable_se,
- .policy = nfc_genl_policy,
+ .flags = GENL_ADMIN_PERM,
},
{
.cmd = NFC_CMD_DISABLE_SE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nfc_genl_disable_se,
- .policy = nfc_genl_policy,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NFC_CMD_GET_SE,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .dumpit = nfc_genl_dump_ses,
+ .done = nfc_genl_dump_ses_done,
+ },
+ {
+ .cmd = NFC_CMD_SE_IO,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = nfc_genl_se_io,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NFC_CMD_ACTIVATE_TARGET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = nfc_genl_activate_target,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NFC_CMD_VENDOR,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = nfc_genl_vendor_cmd,
+ .flags = GENL_ADMIN_PERM,
+ },
+ {
+ .cmd = NFC_CMD_DEACTIVATE_TARGET,
+ .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
+ .doit = nfc_genl_deactivate_target,
+ .flags = GENL_ADMIN_PERM,
},
};
+static struct genl_family nfc_genl_family __ro_after_init = {
+ .hdrsize = 0,
+ .name = NFC_GENL_NAME,
+ .version = NFC_GENL_VERSION,
+ .maxattr = NFC_ATTR_MAX,
+ .policy = nfc_genl_policy,
+ .module = THIS_MODULE,
+ .ops = nfc_genl_ops,
+ .n_ops = ARRAY_SIZE(nfc_genl_ops),
+ .resv_start_op = NFC_CMD_DEACTIVATE_TARGET + 1,
+ .mcgrps = nfc_genl_mcgrps,
+ .n_mcgrps = ARRAY_SIZE(nfc_genl_mcgrps),
+};
+
struct urelease_work {
struct work_struct w;
- int portid;
+ u32 portid;
};
static void nfc_urelease_event_work(struct work_struct *work)
@@ -1319,9 +1877,9 @@ static int nfc_genl_rcv_nl_event(struct notifier_block *this,
w = kmalloc(sizeof(*w), GFP_ATOMIC);
if (w) {
- INIT_WORK((struct work_struct *) w, nfc_urelease_event_work);
+ INIT_WORK(&w->w, nfc_urelease_event_work);
w->portid = n->portid;
- schedule_work((struct work_struct *) w);
+ schedule_work(&w->w);
}
out:
@@ -1352,16 +1910,13 @@ int __init nfc_genl_init(void)
{
int rc;
- rc = genl_register_family_with_ops(&nfc_genl_family, nfc_genl_ops,
- ARRAY_SIZE(nfc_genl_ops));
+ rc = genl_register_family(&nfc_genl_family);
if (rc)
return rc;
- rc = genl_register_mc_group(&nfc_genl_family, &nfc_genl_event_mcgrp);
-
netlink_register_notifier(&nl_notifier);
- return rc;
+ return 0;
}
/**