forked from luck/tmp_suning_uos_patched
68eb55031d
This doesn't really change anything, but prepares for the next patch that will change the APIs to pass the group ID within the family, rather than the global group ID. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1573 lines
32 KiB
C
1573 lines
32 KiB
C
/*
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* Copyright (C) 2011 Instituto Nokia de Tecnologia
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*
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* Authors:
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* Lauro Ramos Venancio <lauro.venancio@openbossa.org>
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* Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
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#include <net/genetlink.h>
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#include <linux/nfc.h>
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#include <linux/slab.h>
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#include "nfc.h"
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#include "llcp.h"
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static struct genl_multicast_group nfc_genl_event_mcgrp = {
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.name = NFC_GENL_MCAST_EVENT_NAME,
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};
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static struct genl_family nfc_genl_family = {
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.id = GENL_ID_GENERATE,
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.hdrsize = 0,
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.name = NFC_GENL_NAME,
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.version = NFC_GENL_VERSION,
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.maxattr = NFC_ATTR_MAX,
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};
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static const struct nla_policy nfc_genl_policy[NFC_ATTR_MAX + 1] = {
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[NFC_ATTR_DEVICE_INDEX] = { .type = NLA_U32 },
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[NFC_ATTR_DEVICE_NAME] = { .type = NLA_STRING,
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.len = NFC_DEVICE_NAME_MAXSIZE },
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[NFC_ATTR_PROTOCOLS] = { .type = NLA_U32 },
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[NFC_ATTR_COMM_MODE] = { .type = NLA_U8 },
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[NFC_ATTR_RF_MODE] = { .type = NLA_U8 },
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[NFC_ATTR_DEVICE_POWERED] = { .type = NLA_U8 },
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[NFC_ATTR_IM_PROTOCOLS] = { .type = NLA_U32 },
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[NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 },
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[NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 },
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[NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 },
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[NFC_ATTR_LLC_PARAM_MIUX] = { .type = NLA_U16 },
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[NFC_ATTR_LLC_SDP] = { .type = NLA_NESTED },
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[NFC_ATTR_FIRMWARE_NAME] = { .type = NLA_STRING,
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.len = NFC_FIRMWARE_NAME_MAXSIZE },
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[NFC_ATTR_SE_APDU] = { .type = NLA_BINARY },
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};
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static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = {
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[NFC_SDP_ATTR_URI] = { .type = NLA_STRING },
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[NFC_SDP_ATTR_SAP] = { .type = NLA_U8 },
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};
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static int nfc_genl_send_target(struct sk_buff *msg, struct nfc_target *target,
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struct netlink_callback *cb, int flags)
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{
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void *hdr;
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hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq,
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&nfc_genl_family, flags, NFC_CMD_GET_TARGET);
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if (!hdr)
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return -EMSGSIZE;
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genl_dump_check_consistent(cb, hdr, &nfc_genl_family);
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if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) ||
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nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) ||
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nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) ||
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nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res))
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goto nla_put_failure;
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if (target->nfcid1_len > 0 &&
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nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len,
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target->nfcid1))
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goto nla_put_failure;
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if (target->sensb_res_len > 0 &&
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nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len,
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target->sensb_res))
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goto nla_put_failure;
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if (target->sensf_res_len > 0 &&
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nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len,
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target->sensf_res))
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goto nla_put_failure;
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return genlmsg_end(msg, hdr);
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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return -EMSGSIZE;
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}
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static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb)
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{
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struct nfc_dev *dev;
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int rc;
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u32 idx;
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rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize,
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nfc_genl_family.attrbuf,
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nfc_genl_family.maxattr,
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nfc_genl_policy);
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if (rc < 0)
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return ERR_PTR(rc);
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if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX])
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return ERR_PTR(-EINVAL);
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idx = nla_get_u32(nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]);
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dev = nfc_get_device(idx);
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if (!dev)
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return ERR_PTR(-ENODEV);
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return dev;
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}
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static int nfc_genl_dump_targets(struct sk_buff *skb,
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struct netlink_callback *cb)
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{
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int i = cb->args[0];
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struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
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int rc;
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if (!dev) {
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dev = __get_device_from_cb(cb);
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if (IS_ERR(dev))
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return PTR_ERR(dev);
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cb->args[1] = (long) dev;
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}
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device_lock(&dev->dev);
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cb->seq = dev->targets_generation;
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while (i < dev->n_targets) {
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rc = nfc_genl_send_target(skb, &dev->targets[i], cb,
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NLM_F_MULTI);
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if (rc < 0)
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break;
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i++;
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}
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device_unlock(&dev->dev);
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cb->args[0] = i;
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return skb->len;
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}
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static int nfc_genl_dump_targets_done(struct netlink_callback *cb)
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{
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struct nfc_dev *dev = (struct nfc_dev *) cb->args[1];
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if (dev)
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nfc_put_device(dev);
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return 0;
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}
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int nfc_genl_targets_found(struct nfc_dev *dev)
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{
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struct sk_buff *msg;
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void *hdr;
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dev->genl_data.poll_req_portid = 0;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
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if (!msg)
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return -ENOMEM;
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hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
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NFC_EVENT_TARGETS_FOUND);
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if (!hdr)
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goto free_msg;
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if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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return genlmsg_multicast(&nfc_genl_family, msg, 0,
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nfc_genl_event_mcgrp.id, GFP_ATOMIC);
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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free_msg:
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nlmsg_free(msg);
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return -EMSGSIZE;
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}
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int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx)
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{
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struct sk_buff *msg;
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void *hdr;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
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NFC_EVENT_TARGET_LOST);
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if (!hdr)
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goto free_msg;
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if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
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nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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genlmsg_multicast(&nfc_genl_family, msg, 0,
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nfc_genl_event_mcgrp.id, GFP_KERNEL);
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return 0;
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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free_msg:
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nlmsg_free(msg);
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return -EMSGSIZE;
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}
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int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol)
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{
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struct sk_buff *msg;
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void *hdr;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
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NFC_EVENT_TM_ACTIVATED);
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if (!hdr)
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goto free_msg;
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if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
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goto nla_put_failure;
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if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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genlmsg_multicast(&nfc_genl_family, msg, 0,
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nfc_genl_event_mcgrp.id, GFP_KERNEL);
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return 0;
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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free_msg:
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nlmsg_free(msg);
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return -EMSGSIZE;
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}
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int nfc_genl_tm_deactivated(struct nfc_dev *dev)
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{
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struct sk_buff *msg;
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void *hdr;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
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NFC_EVENT_TM_DEACTIVATED);
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if (!hdr)
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goto free_msg;
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if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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genlmsg_multicast(&nfc_genl_family, msg, 0,
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nfc_genl_event_mcgrp.id, GFP_KERNEL);
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return 0;
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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free_msg:
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nlmsg_free(msg);
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return -EMSGSIZE;
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}
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int nfc_genl_device_added(struct nfc_dev *dev)
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{
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struct sk_buff *msg;
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void *hdr;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
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NFC_EVENT_DEVICE_ADDED);
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if (!hdr)
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goto free_msg;
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if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) ||
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nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
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nla_put_u32(msg, NFC_ATTR_PROTOCOLS, dev->supported_protocols) ||
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nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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genlmsg_multicast(&nfc_genl_family, msg, 0,
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nfc_genl_event_mcgrp.id, GFP_KERNEL);
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return 0;
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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free_msg:
|
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nlmsg_free(msg);
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return -EMSGSIZE;
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}
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|
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int nfc_genl_device_removed(struct nfc_dev *dev)
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{
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struct sk_buff *msg;
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void *hdr;
|
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
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NFC_EVENT_DEVICE_REMOVED);
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if (!hdr)
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goto free_msg;
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if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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genlmsg_multicast(&nfc_genl_family, msg, 0,
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nfc_genl_event_mcgrp.id, GFP_KERNEL);
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return 0;
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nla_put_failure:
|
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genlmsg_cancel(msg, hdr);
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free_msg:
|
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nlmsg_free(msg);
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return -EMSGSIZE;
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}
|
|
|
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int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list)
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{
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struct sk_buff *msg;
|
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struct nlattr *sdp_attr, *uri_attr;
|
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struct nfc_llcp_sdp_tlv *sdres;
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struct hlist_node *n;
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void *hdr;
|
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int rc = -EMSGSIZE;
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int i;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
|
|
|
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hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
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NFC_EVENT_LLC_SDRES);
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if (!hdr)
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goto free_msg;
|
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|
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if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
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goto nla_put_failure;
|
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|
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sdp_attr = nla_nest_start(msg, NFC_ATTR_LLC_SDP);
|
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if (sdp_attr == NULL) {
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rc = -ENOMEM;
|
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goto nla_put_failure;
|
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}
|
|
|
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i = 1;
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hlist_for_each_entry_safe(sdres, n, sdres_list, node) {
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pr_debug("uri: %s, sap: %d\n", sdres->uri, sdres->sap);
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|
|
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uri_attr = nla_nest_start(msg, i++);
|
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if (uri_attr == NULL) {
|
|
rc = -ENOMEM;
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
if (nla_put_u8(msg, NFC_SDP_ATTR_SAP, sdres->sap))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_string(msg, NFC_SDP_ATTR_URI, sdres->uri))
|
|
goto nla_put_failure;
|
|
|
|
nla_nest_end(msg, uri_attr);
|
|
|
|
hlist_del(&sdres->node);
|
|
|
|
nfc_llcp_free_sdp_tlv(sdres);
|
|
}
|
|
|
|
nla_nest_end(msg, sdp_attr);
|
|
|
|
genlmsg_end(msg, hdr);
|
|
|
|
return genlmsg_multicast(&nfc_genl_family, msg, 0,
|
|
nfc_genl_event_mcgrp.id, GFP_ATOMIC);
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
|
|
free_msg:
|
|
nlmsg_free(msg);
|
|
|
|
nfc_llcp_free_sdp_tlv_list(sdres_list);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int nfc_genl_se_added(struct nfc_dev *dev, u32 se_idx, u16 type)
|
|
{
|
|
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_ADDED);
|
|
if (!hdr)
|
|
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, type))
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
|
|
genlmsg_multicast(&nfc_genl_family, msg, 0,
|
|
nfc_genl_event_mcgrp.id, GFP_KERNEL);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
free_msg:
|
|
nlmsg_free(msg);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
int nfc_genl_se_removed(struct nfc_dev *dev, u32 se_idx)
|
|
{
|
|
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_REMOVED);
|
|
if (!hdr)
|
|
goto free_msg;
|
|
|
|
if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx) ||
|
|
nla_put_u32(msg, NFC_ATTR_SE_INDEX, se_idx))
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
|
|
genlmsg_multicast(&nfc_genl_family, msg, 0,
|
|
nfc_genl_event_mcgrp.id, GFP_KERNEL);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
free_msg:
|
|
nlmsg_free(msg);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev,
|
|
u32 portid, u32 seq,
|
|
struct netlink_callback *cb,
|
|
int flags)
|
|
{
|
|
void *hdr;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags,
|
|
NFC_CMD_GET_DEVICE);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (cb)
|
|
genl_dump_check_consistent(cb, hdr, &nfc_genl_family);
|
|
|
|
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))
|
|
goto nla_put_failure;
|
|
|
|
return genlmsg_end(msg, hdr);
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int nfc_genl_dump_devices(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_device(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_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);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx,
|
|
u8 comm_mode, u8 rf_mode)
|
|
{
|
|
struct sk_buff *msg;
|
|
void *hdr;
|
|
|
|
pr_debug("DEP link is up\n");
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP);
|
|
if (!hdr)
|
|
goto free_msg;
|
|
|
|
if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
|
|
goto nla_put_failure;
|
|
if (rf_mode == NFC_RF_INITIATOR &&
|
|
nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx))
|
|
goto nla_put_failure;
|
|
if (nla_put_u8(msg, NFC_ATTR_COMM_MODE, comm_mode) ||
|
|
nla_put_u8(msg, NFC_ATTR_RF_MODE, rf_mode))
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
|
|
dev->dep_link_up = true;
|
|
|
|
genlmsg_multicast(&nfc_genl_family, msg, 0,
|
|
nfc_genl_event_mcgrp.id, GFP_ATOMIC);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
free_msg:
|
|
nlmsg_free(msg);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
int nfc_genl_dep_link_down_event(struct nfc_dev *dev)
|
|
{
|
|
struct sk_buff *msg;
|
|
void *hdr;
|
|
|
|
pr_debug("DEP link is down\n");
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
|
|
NFC_CMD_DEP_LINK_DOWN);
|
|
if (!hdr)
|
|
goto free_msg;
|
|
|
|
if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx))
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
|
|
genlmsg_multicast(&nfc_genl_family, msg, 0,
|
|
nfc_genl_event_mcgrp.id, GFP_ATOMIC);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
free_msg:
|
|
nlmsg_free(msg);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int nfc_genl_get_device(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct sk_buff *msg;
|
|
struct nfc_dev *dev;
|
|
u32 idx;
|
|
int rc = -ENOBUFS;
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
|
|
return -EINVAL;
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg) {
|
|
rc = -ENOMEM;
|
|
goto out_putdev;
|
|
}
|
|
|
|
rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq,
|
|
NULL, 0);
|
|
if (rc < 0)
|
|
goto out_free;
|
|
|
|
nfc_put_device(dev);
|
|
|
|
return genlmsg_reply(msg, info);
|
|
|
|
out_free:
|
|
nlmsg_free(msg);
|
|
out_putdev:
|
|
nfc_put_device(dev);
|
|
return rc;
|
|
}
|
|
|
|
static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nfc_dev *dev;
|
|
int rc;
|
|
u32 idx;
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
|
|
return -EINVAL;
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
rc = nfc_dev_up(dev);
|
|
|
|
nfc_put_device(dev);
|
|
return rc;
|
|
}
|
|
|
|
static int nfc_genl_dev_down(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nfc_dev *dev;
|
|
int rc;
|
|
u32 idx;
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
|
|
return -EINVAL;
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
rc = nfc_dev_down(dev);
|
|
|
|
nfc_put_device(dev);
|
|
return rc;
|
|
}
|
|
|
|
static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nfc_dev *dev;
|
|
int rc;
|
|
u32 idx;
|
|
u32 im_protocols = 0, tm_protocols = 0;
|
|
|
|
pr_debug("Poll start\n");
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
|
|
((!info->attrs[NFC_ATTR_IM_PROTOCOLS] &&
|
|
!info->attrs[NFC_ATTR_PROTOCOLS]) &&
|
|
!info->attrs[NFC_ATTR_TM_PROTOCOLS]))
|
|
return -EINVAL;
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
|
|
if (info->attrs[NFC_ATTR_TM_PROTOCOLS])
|
|
tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]);
|
|
|
|
if (info->attrs[NFC_ATTR_IM_PROTOCOLS])
|
|
im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]);
|
|
else if (info->attrs[NFC_ATTR_PROTOCOLS])
|
|
im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]);
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
mutex_lock(&dev->genl_data.genl_data_mutex);
|
|
|
|
rc = nfc_start_poll(dev, im_protocols, tm_protocols);
|
|
if (!rc)
|
|
dev->genl_data.poll_req_portid = info->snd_portid;
|
|
|
|
mutex_unlock(&dev->genl_data.genl_data_mutex);
|
|
|
|
nfc_put_device(dev);
|
|
return rc;
|
|
}
|
|
|
|
static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nfc_dev *dev;
|
|
int rc;
|
|
u32 idx;
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
|
|
return -EINVAL;
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
device_lock(&dev->dev);
|
|
|
|
if (!dev->polling) {
|
|
device_unlock(&dev->dev);
|
|
return -EINVAL;
|
|
}
|
|
|
|
device_unlock(&dev->dev);
|
|
|
|
mutex_lock(&dev->genl_data.genl_data_mutex);
|
|
|
|
if (dev->genl_data.poll_req_portid != info->snd_portid) {
|
|
rc = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
rc = nfc_stop_poll(dev);
|
|
dev->genl_data.poll_req_portid = 0;
|
|
|
|
out:
|
|
mutex_unlock(&dev->genl_data.genl_data_mutex);
|
|
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;
|
|
int rc, tgt_idx;
|
|
u32 idx;
|
|
u8 comm;
|
|
|
|
pr_debug("DEP link up\n");
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
|
|
!info->attrs[NFC_ATTR_COMM_MODE])
|
|
return -EINVAL;
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
if (!info->attrs[NFC_ATTR_TARGET_INDEX])
|
|
tgt_idx = NFC_TARGET_IDX_ANY;
|
|
else
|
|
tgt_idx = nla_get_u32(info->attrs[NFC_ATTR_TARGET_INDEX]);
|
|
|
|
comm = nla_get_u8(info->attrs[NFC_ATTR_COMM_MODE]);
|
|
|
|
if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE)
|
|
return -EINVAL;
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
rc = nfc_dep_link_up(dev, tgt_idx, comm);
|
|
|
|
nfc_put_device(dev);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int nfc_genl_dep_link_down(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nfc_dev *dev;
|
|
int rc;
|
|
u32 idx;
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
|
|
return -EINVAL;
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
rc = nfc_dep_link_down(dev);
|
|
|
|
nfc_put_device(dev);
|
|
return rc;
|
|
}
|
|
|
|
static int nfc_genl_send_params(struct sk_buff *msg,
|
|
struct nfc_llcp_local *local,
|
|
u32 portid, u32 seq)
|
|
{
|
|
void *hdr;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, 0,
|
|
NFC_CMD_LLC_GET_PARAMS);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, local->dev->idx) ||
|
|
nla_put_u8(msg, NFC_ATTR_LLC_PARAM_LTO, local->lto) ||
|
|
nla_put_u8(msg, NFC_ATTR_LLC_PARAM_RW, local->rw) ||
|
|
nla_put_u16(msg, NFC_ATTR_LLC_PARAM_MIUX, be16_to_cpu(local->miux)))
|
|
goto nla_put_failure;
|
|
|
|
return genlmsg_end(msg, hdr);
|
|
|
|
nla_put_failure:
|
|
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int nfc_genl_llc_get_params(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nfc_dev *dev;
|
|
struct nfc_llcp_local *local;
|
|
int rc = 0;
|
|
struct sk_buff *msg = NULL;
|
|
u32 idx;
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX])
|
|
return -EINVAL;
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
device_lock(&dev->dev);
|
|
|
|
local = nfc_llcp_find_local(dev);
|
|
if (!local) {
|
|
rc = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg) {
|
|
rc = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
rc = nfc_genl_send_params(msg, local, info->snd_portid, info->snd_seq);
|
|
|
|
exit:
|
|
device_unlock(&dev->dev);
|
|
|
|
nfc_put_device(dev);
|
|
|
|
if (rc < 0) {
|
|
if (msg)
|
|
nlmsg_free(msg);
|
|
|
|
return rc;
|
|
}
|
|
|
|
return genlmsg_reply(msg, info);
|
|
}
|
|
|
|
static int nfc_genl_llc_set_params(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nfc_dev *dev;
|
|
struct nfc_llcp_local *local;
|
|
u8 rw = 0;
|
|
u16 miux = 0;
|
|
u32 idx;
|
|
int rc = 0;
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
|
|
(!info->attrs[NFC_ATTR_LLC_PARAM_LTO] &&
|
|
!info->attrs[NFC_ATTR_LLC_PARAM_RW] &&
|
|
!info->attrs[NFC_ATTR_LLC_PARAM_MIUX]))
|
|
return -EINVAL;
|
|
|
|
if (info->attrs[NFC_ATTR_LLC_PARAM_RW]) {
|
|
rw = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_RW]);
|
|
|
|
if (rw > LLCP_MAX_RW)
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX]) {
|
|
miux = nla_get_u16(info->attrs[NFC_ATTR_LLC_PARAM_MIUX]);
|
|
|
|
if (miux > LLCP_MAX_MIUX)
|
|
return -EINVAL;
|
|
}
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
device_lock(&dev->dev);
|
|
|
|
local = nfc_llcp_find_local(dev);
|
|
if (!local) {
|
|
nfc_put_device(dev);
|
|
rc = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
if (info->attrs[NFC_ATTR_LLC_PARAM_LTO]) {
|
|
if (dev->dep_link_up) {
|
|
rc = -EINPROGRESS;
|
|
goto exit;
|
|
}
|
|
|
|
local->lto = nla_get_u8(info->attrs[NFC_ATTR_LLC_PARAM_LTO]);
|
|
}
|
|
|
|
if (info->attrs[NFC_ATTR_LLC_PARAM_RW])
|
|
local->rw = rw;
|
|
|
|
if (info->attrs[NFC_ATTR_LLC_PARAM_MIUX])
|
|
local->miux = cpu_to_be16(miux);
|
|
|
|
exit:
|
|
device_unlock(&dev->dev);
|
|
|
|
nfc_put_device(dev);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int nfc_genl_llc_sdreq(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nfc_dev *dev;
|
|
struct nfc_llcp_local *local;
|
|
struct nlattr *attr, *sdp_attrs[NFC_SDP_ATTR_MAX+1];
|
|
u32 idx;
|
|
u8 tid;
|
|
char *uri;
|
|
int rc = 0, rem;
|
|
size_t uri_len, tlvs_len;
|
|
struct hlist_head sdreq_list;
|
|
struct nfc_llcp_sdp_tlv *sdreq;
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
|
|
!info->attrs[NFC_ATTR_LLC_SDP])
|
|
return -EINVAL;
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev) {
|
|
rc = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
device_lock(&dev->dev);
|
|
|
|
if (dev->dep_link_up == false) {
|
|
rc = -ENOLINK;
|
|
goto exit;
|
|
}
|
|
|
|
local = nfc_llcp_find_local(dev);
|
|
if (!local) {
|
|
nfc_put_device(dev);
|
|
rc = -ENODEV;
|
|
goto exit;
|
|
}
|
|
|
|
INIT_HLIST_HEAD(&sdreq_list);
|
|
|
|
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);
|
|
|
|
if (rc != 0) {
|
|
rc = -EINVAL;
|
|
goto exit;
|
|
}
|
|
|
|
if (!sdp_attrs[NFC_SDP_ATTR_URI])
|
|
continue;
|
|
|
|
uri_len = nla_len(sdp_attrs[NFC_SDP_ATTR_URI]);
|
|
if (uri_len == 0)
|
|
continue;
|
|
|
|
uri = nla_data(sdp_attrs[NFC_SDP_ATTR_URI]);
|
|
if (uri == NULL || *uri == 0)
|
|
continue;
|
|
|
|
tid = local->sdreq_next_tid++;
|
|
|
|
sdreq = nfc_llcp_build_sdreq_tlv(tid, uri, uri_len);
|
|
if (sdreq == NULL) {
|
|
rc = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
tlvs_len += sdreq->tlv_len;
|
|
|
|
hlist_add_head(&sdreq->node, &sdreq_list);
|
|
}
|
|
|
|
if (hlist_empty(&sdreq_list)) {
|
|
rc = -EINVAL;
|
|
goto exit;
|
|
}
|
|
|
|
rc = nfc_llcp_send_snl_sdreq(local, &sdreq_list, tlvs_len);
|
|
exit:
|
|
device_unlock(&dev->dev);
|
|
|
|
nfc_put_device(dev);
|
|
|
|
return rc;
|
|
}
|
|
|
|
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])
|
|
return -EINVAL;
|
|
|
|
idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]);
|
|
|
|
dev = nfc_get_device(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
nla_strlcpy(firmware_name, info->attrs[NFC_ATTR_FIRMWARE_NAME],
|
|
sizeof(firmware_name));
|
|
|
|
rc = nfc_fw_download(dev, firmware_name);
|
|
|
|
nfc_put_device(dev);
|
|
return rc;
|
|
}
|
|
|
|
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);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0,
|
|
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(&nfc_genl_family, msg, 0,
|
|
nfc_genl_event_mcgrp.id, GFP_KERNEL);
|
|
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
free_msg:
|
|
nlmsg_free(msg);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
static int nfc_genl_enable_se(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nfc_dev *dev;
|
|
int rc;
|
|
u32 idx, se_idx;
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
|
|
!info->attrs[NFC_ATTR_SE_INDEX])
|
|
return -EINVAL;
|
|
|
|
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(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
rc = nfc_enable_se(dev, se_idx);
|
|
|
|
nfc_put_device(dev);
|
|
return rc;
|
|
}
|
|
|
|
static int nfc_genl_disable_se(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct nfc_dev *dev;
|
|
int rc;
|
|
u32 idx, se_idx;
|
|
|
|
if (!info->attrs[NFC_ATTR_DEVICE_INDEX] ||
|
|
!info->attrs[NFC_ATTR_SE_INDEX])
|
|
return -EINVAL;
|
|
|
|
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(idx);
|
|
if (!dev)
|
|
return -ENODEV;
|
|
|
|
rc = nfc_disable_se(dev, se_idx);
|
|
|
|
nfc_put_device(dev);
|
|
return rc;
|
|
}
|
|
|
|
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, &nfc_genl_family);
|
|
|
|
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;
|
|
|
|
if (genlmsg_end(msg, hdr) < 0)
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
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];
|
|
|
|
nfc_device_iter_exit(iter);
|
|
kfree(iter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
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,
|
|
nfc_genl_event_mcgrp.id, GFP_KERNEL);
|
|
|
|
kfree(ctx);
|
|
|
|
return;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
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;
|
|
|
|
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)
|
|
return -ENOTSUPP;
|
|
|
|
apdu_len = nla_len(info->attrs[NFC_ATTR_SE_APDU]);
|
|
if (apdu_len == 0)
|
|
return -EINVAL;
|
|
|
|
apdu = nla_data(info->attrs[NFC_ATTR_SE_APDU]);
|
|
if (!apdu)
|
|
return -EINVAL;
|
|
|
|
ctx = kzalloc(sizeof(struct se_io_ctx), GFP_KERNEL);
|
|
if (!ctx)
|
|
return -ENOMEM;
|
|
|
|
ctx->dev_idx = dev_idx;
|
|
ctx->se_idx = se_idx;
|
|
|
|
return dev->ops->se_io(dev, se_idx, apdu, apdu_len, se_io_cb, ctx);
|
|
}
|
|
|
|
static const struct genl_ops nfc_genl_ops[] = {
|
|
{
|
|
.cmd = NFC_CMD_GET_DEVICE,
|
|
.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,
|
|
.doit = nfc_genl_dev_up,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_DEV_DOWN,
|
|
.doit = nfc_genl_dev_down,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_START_POLL,
|
|
.doit = nfc_genl_start_poll,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_STOP_POLL,
|
|
.doit = nfc_genl_stop_poll,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_DEP_LINK_UP,
|
|
.doit = nfc_genl_dep_link_up,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_DEP_LINK_DOWN,
|
|
.doit = nfc_genl_dep_link_down,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_GET_TARGET,
|
|
.dumpit = nfc_genl_dump_targets,
|
|
.done = nfc_genl_dump_targets_done,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_LLC_GET_PARAMS,
|
|
.doit = nfc_genl_llc_get_params,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_LLC_SET_PARAMS,
|
|
.doit = nfc_genl_llc_set_params,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_LLC_SDREQ,
|
|
.doit = nfc_genl_llc_sdreq,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_FW_DOWNLOAD,
|
|
.doit = nfc_genl_fw_download,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_ENABLE_SE,
|
|
.doit = nfc_genl_enable_se,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_DISABLE_SE,
|
|
.doit = nfc_genl_disable_se,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_GET_SE,
|
|
.dumpit = nfc_genl_dump_ses,
|
|
.done = nfc_genl_dump_ses_done,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
{
|
|
.cmd = NFC_CMD_SE_IO,
|
|
.doit = nfc_genl_se_io,
|
|
.policy = nfc_genl_policy,
|
|
},
|
|
};
|
|
|
|
|
|
struct urelease_work {
|
|
struct work_struct w;
|
|
int portid;
|
|
};
|
|
|
|
static void nfc_urelease_event_work(struct work_struct *work)
|
|
{
|
|
struct urelease_work *w = container_of(work, struct urelease_work, w);
|
|
struct class_dev_iter iter;
|
|
struct nfc_dev *dev;
|
|
|
|
pr_debug("portid %d\n", w->portid);
|
|
|
|
mutex_lock(&nfc_devlist_mutex);
|
|
|
|
nfc_device_iter_init(&iter);
|
|
dev = nfc_device_iter_next(&iter);
|
|
|
|
while (dev) {
|
|
mutex_lock(&dev->genl_data.genl_data_mutex);
|
|
|
|
if (dev->genl_data.poll_req_portid == w->portid) {
|
|
nfc_stop_poll(dev);
|
|
dev->genl_data.poll_req_portid = 0;
|
|
}
|
|
|
|
mutex_unlock(&dev->genl_data.genl_data_mutex);
|
|
|
|
dev = nfc_device_iter_next(&iter);
|
|
}
|
|
|
|
nfc_device_iter_exit(&iter);
|
|
|
|
mutex_unlock(&nfc_devlist_mutex);
|
|
|
|
kfree(w);
|
|
}
|
|
|
|
static int nfc_genl_rcv_nl_event(struct notifier_block *this,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
struct netlink_notify *n = ptr;
|
|
struct urelease_work *w;
|
|
|
|
if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC)
|
|
goto out;
|
|
|
|
pr_debug("NETLINK_URELEASE event from id %d\n", n->portid);
|
|
|
|
w = kmalloc(sizeof(*w), GFP_ATOMIC);
|
|
if (w) {
|
|
INIT_WORK((struct work_struct *) w, nfc_urelease_event_work);
|
|
w->portid = n->portid;
|
|
schedule_work((struct work_struct *) w);
|
|
}
|
|
|
|
out:
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
void nfc_genl_data_init(struct nfc_genl_data *genl_data)
|
|
{
|
|
genl_data->poll_req_portid = 0;
|
|
mutex_init(&genl_data->genl_data_mutex);
|
|
}
|
|
|
|
void nfc_genl_data_exit(struct nfc_genl_data *genl_data)
|
|
{
|
|
mutex_destroy(&genl_data->genl_data_mutex);
|
|
}
|
|
|
|
static struct notifier_block nl_notifier = {
|
|
.notifier_call = nfc_genl_rcv_nl_event,
|
|
};
|
|
|
|
/**
|
|
* nfc_genl_init() - Initialize netlink interface
|
|
*
|
|
* This initialization function registers the nfc netlink family.
|
|
*/
|
|
int __init nfc_genl_init(void)
|
|
{
|
|
int rc;
|
|
|
|
rc = genl_register_family_with_ops(&nfc_genl_family, nfc_genl_ops);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = genl_register_mc_group(&nfc_genl_family, &nfc_genl_event_mcgrp);
|
|
|
|
netlink_register_notifier(&nl_notifier);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* nfc_genl_exit() - Deinitialize netlink interface
|
|
*
|
|
* This exit function unregisters the nfc netlink family.
|
|
*/
|
|
void nfc_genl_exit(void)
|
|
{
|
|
netlink_unregister_notifier(&nl_notifier);
|
|
genl_unregister_family(&nfc_genl_family);
|
|
}
|