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net/nfc/netlink.c
32.3 KB
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/* * Copyright (C) 2011 Instituto Nokia de Tecnologia * * Authors: * 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. * * 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 |
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* along with this program; if not, see <http://www.gnu.org/licenses/>. |
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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> #include <linux/nfc.h> #include <linux/slab.h> #include "nfc.h" |
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#include "llcp.h" |
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static const struct genl_multicast_group nfc_genl_mcgrps[] = { { .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, .hdrsize = 0, .name = NFC_GENL_NAME, .version = NFC_GENL_VERSION, .maxattr = NFC_ATTR_MAX, }; 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 }, |
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[NFC_ATTR_COMM_MODE] = { .type = NLA_U8 }, [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 }, [NFC_ATTR_TM_PROTOCOLS] = { .type = NLA_U32 }, |
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[NFC_ATTR_LLC_PARAM_LTO] = { .type = NLA_U8 }, [NFC_ATTR_LLC_PARAM_RW] = { .type = NLA_U8 }, [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, .len = NFC_FIRMWARE_NAME_MAXSIZE }, |
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[NFC_ATTR_SE_APDU] = { .type = NLA_BINARY }, |
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}; static const struct nla_policy nfc_sdp_genl_policy[NFC_SDP_ATTR_MAX + 1] = { [NFC_SDP_ATTR_URI] = { .type = NLA_STRING }, [NFC_SDP_ATTR_SAP] = { .type = NLA_U8 }, |
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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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{ 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) return -EMSGSIZE; genl_dump_check_consistent(cb, hdr, &nfc_genl_family); |
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if (nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target->idx) || nla_put_u32(msg, NFC_ATTR_PROTOCOLS, target->supported_protocols) || nla_put_u16(msg, NFC_ATTR_TARGET_SENS_RES, target->sens_res) || nla_put_u8(msg, NFC_ATTR_TARGET_SEL_RES, target->sel_res)) goto nla_put_failure; if (target->nfcid1_len > 0 && nla_put(msg, NFC_ATTR_TARGET_NFCID1, target->nfcid1_len, target->nfcid1)) goto nla_put_failure; if (target->sensb_res_len > 0 && nla_put(msg, NFC_ATTR_TARGET_SENSB_RES, target->sensb_res_len, target->sensb_res)) goto nla_put_failure; if (target->sensf_res_len > 0 && nla_put(msg, NFC_ATTR_TARGET_SENSF_RES, target->sensf_res_len, target->sensf_res)) goto nla_put_failure; |
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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; } |
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return genlmsg_end(msg, hdr); nla_put_failure: genlmsg_cancel(msg, hdr); return -EMSGSIZE; } static struct nfc_dev *__get_device_from_cb(struct netlink_callback *cb) { struct nfc_dev *dev; int rc; u32 idx; rc = nlmsg_parse(cb->nlh, GENL_HDRLEN + nfc_genl_family.hdrsize, |
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nfc_genl_family.attrbuf, nfc_genl_family.maxattr, nfc_genl_policy); |
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if (rc < 0) return ERR_PTR(rc); if (!nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]) return ERR_PTR(-EINVAL); idx = nla_get_u32(nfc_genl_family.attrbuf[NFC_ATTR_DEVICE_INDEX]); dev = nfc_get_device(idx); if (!dev) return ERR_PTR(-ENODEV); return dev; } static int nfc_genl_dump_targets(struct sk_buff *skb, |
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struct netlink_callback *cb) |
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{ int i = cb->args[0]; struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; int rc; |
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if (!dev) { dev = __get_device_from_cb(cb); if (IS_ERR(dev)) return PTR_ERR(dev); cb->args[1] = (long) dev; } |
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device_lock(&dev->dev); |
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cb->seq = dev->targets_generation; while (i < dev->n_targets) { rc = nfc_genl_send_target(skb, &dev->targets[i], cb, |
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NLM_F_MULTI); |
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if (rc < 0) break; i++; } |
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device_unlock(&dev->dev); |
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cb->args[0] = i; return skb->len; } static int nfc_genl_dump_targets_done(struct netlink_callback *cb) { struct nfc_dev *dev = (struct nfc_dev *) cb->args[1]; |
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if (dev) nfc_put_device(dev); return 0; } int nfc_genl_targets_found(struct nfc_dev *dev) { struct sk_buff *msg; 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) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, |
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NFC_EVENT_TARGETS_FOUND); |
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if (!hdr) goto free_msg; |
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if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; |
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genlmsg_end(msg, hdr); |
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return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
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nla_put_failure: genlmsg_cancel(msg, hdr); free_msg: nlmsg_free(msg); return -EMSGSIZE; } |
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int nfc_genl_target_lost(struct nfc_dev *dev, u32 target_idx) { struct sk_buff *msg; void *hdr; |
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
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if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_TARGET_LOST); if (!hdr) goto free_msg; |
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if (nla_put_string(msg, NFC_ATTR_DEVICE_NAME, nfc_device_name(dev)) || nla_put_u32(msg, NFC_ATTR_TARGET_INDEX, target_idx)) goto nla_put_failure; |
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genlmsg_end(msg, hdr); |
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genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
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return 0; nla_put_failure: genlmsg_cancel(msg, hdr); free_msg: nlmsg_free(msg); |
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return -EMSGSIZE; } int nfc_genl_tm_activated(struct nfc_dev *dev, u32 protocol) { struct sk_buff *msg; void *hdr; |
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
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if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_TM_ACTIVATED); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; if (nla_put_u32(msg, NFC_ATTR_TM_PROTOCOLS, protocol)) goto nla_put_failure; genlmsg_end(msg, hdr); |
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genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
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return 0; nla_put_failure: genlmsg_cancel(msg, hdr); free_msg: nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_tm_deactivated(struct nfc_dev *dev) { struct sk_buff *msg; void *hdr; |
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
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if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_TM_DEACTIVATED); if (!hdr) goto free_msg; if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; genlmsg_end(msg, hdr); |
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genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
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return 0; nla_put_failure: genlmsg_cancel(msg, hdr); free_msg: nlmsg_free(msg); |
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return -EMSGSIZE; } |
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int nfc_genl_device_added(struct nfc_dev *dev) { struct sk_buff *msg; void *hdr; |
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
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if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, |
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NFC_EVENT_DEVICE_ADDED); |
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if (!hdr) goto free_msg; |
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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)) goto nla_put_failure; |
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genlmsg_end(msg, hdr); |
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genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
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return 0; nla_put_failure: genlmsg_cancel(msg, hdr); free_msg: nlmsg_free(msg); return -EMSGSIZE; } int nfc_genl_device_removed(struct nfc_dev *dev) { struct sk_buff *msg; void *hdr; |
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
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if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, |
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NFC_EVENT_DEVICE_REMOVED); |
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if (!hdr) goto free_msg; |
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if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; |
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genlmsg_end(msg, hdr); |
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genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
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return 0; nla_put_failure: genlmsg_cancel(msg, hdr); free_msg: nlmsg_free(msg); return -EMSGSIZE; } |
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int nfc_genl_llc_send_sdres(struct nfc_dev *dev, struct hlist_head *sdres_list) { struct sk_buff *msg; struct nlattr *sdp_attr, *uri_attr; struct nfc_llcp_sdp_tlv *sdres; struct hlist_node *n; void *hdr; int rc = -EMSGSIZE; int i; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_EVENT_LLC_SDRES); if (!hdr) goto free_msg; 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); if (sdp_attr == NULL) { rc = -ENOMEM; goto nla_put_failure; } i = 1; hlist_for_each_entry_safe(sdres, n, sdres_list, node) { pr_debug("uri: %s, sap: %d ", sdres->uri, sdres->sap); uri_attr = nla_nest_start(msg, i++); 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); |
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return genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
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nla_put_failure: genlmsg_cancel(msg, hdr); free_msg: nlmsg_free(msg); nfc_llcp_free_sdp_tlv_list(sdres_list); return rc; } |
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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); |
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genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
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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); |
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genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
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return 0; nla_put_failure: genlmsg_cancel(msg, hdr); free_msg: nlmsg_free(msg); return -EMSGSIZE; } |
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static int nfc_genl_send_device(struct sk_buff *msg, struct nfc_dev *dev, |
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u32 portid, u32 seq, |
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struct netlink_callback *cb, int flags) |
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{ void *hdr; |
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hdr = genlmsg_put(msg, portid, seq, &nfc_genl_family, flags, |
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NFC_CMD_GET_DEVICE); |
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if (!hdr) return -EMSGSIZE; if (cb) genl_dump_check_consistent(cb, hdr, &nfc_genl_family); |
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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) || |
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nla_put_u8(msg, NFC_ATTR_DEVICE_POWERED, dev->dev_up) || nla_put_u8(msg, NFC_ATTR_RF_MODE, dev->rf_mode)) |
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goto nla_put_failure; |
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return genlmsg_end(msg, hdr); nla_put_failure: genlmsg_cancel(msg, hdr); return -EMSGSIZE; } static int nfc_genl_dump_devices(struct sk_buff *skb, |
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struct netlink_callback *cb) |
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{ 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; |
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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; |
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rc = nfc_genl_send_device(skb, dev, NETLINK_CB(cb->skb).portid, |
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cb->nlh->nlmsg_seq, cb, NLM_F_MULTI); |
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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]; |
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nfc_device_iter_exit(iter); kfree(iter); return 0; } |
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int nfc_genl_dep_link_up_event(struct nfc_dev *dev, u32 target_idx, |
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u8 comm_mode, u8 rf_mode) |
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{ struct sk_buff *msg; void *hdr; pr_debug("DEP link is up "); |
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
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if (!msg) return -ENOMEM; |
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hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, NFC_CMD_DEP_LINK_UP); |
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if (!hdr) goto free_msg; |
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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; |
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genlmsg_end(msg, hdr); dev->dep_link_up = true; |
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genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
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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 "); |
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); |
1ed28f610
|
587 588 589 590 |
if (!msg) return -ENOMEM; hdr = genlmsg_put(msg, 0, 0, &nfc_genl_family, 0, |
0a40acb24
|
591 |
NFC_CMD_DEP_LINK_DOWN); |
1ed28f610
|
592 593 |
if (!hdr) goto free_msg; |
1e6428d82
|
594 595 |
if (nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; |
1ed28f610
|
596 597 |
genlmsg_end(msg, hdr); |
2a94fe48f
|
598 |
genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_ATOMIC); |
1ed28f610
|
599 600 601 602 603 604 605 606 607 |
return 0; nla_put_failure: genlmsg_cancel(msg, hdr); free_msg: nlmsg_free(msg); return -EMSGSIZE; } |
4d12b8b12
|
608 609 610 611 612 613 |
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; |
4d12b8b12
|
614 615 616 617 618 619 620 621 |
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; |
58050fce3
|
622 |
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); |
4d12b8b12
|
623 624 625 626 |
if (!msg) { rc = -ENOMEM; goto out_putdev; } |
15e473046
|
627 |
rc = nfc_genl_send_device(msg, dev, info->snd_portid, info->snd_seq, |
0a40acb24
|
628 |
NULL, 0); |
4d12b8b12
|
629 630 631 632 633 634 635 636 637 638 639 640 641 |
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; } |
8b3fe7b59
|
642 643 644 645 646 |
static int nfc_genl_dev_up(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc; u32 idx; |
8b3fe7b59
|
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 |
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; |
8b3fe7b59
|
667 668 669 670 671 672 673 674 675 676 677 678 679 680 |
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; } |
4d12b8b12
|
681 682 683 684 685 |
static int nfc_genl_start_poll(struct sk_buff *skb, struct genl_info *info) { struct nfc_dev *dev; int rc; u32 idx; |
fe7c58007
|
686 |
u32 im_protocols = 0, tm_protocols = 0; |
4d12b8b12
|
687 |
|
1ed28f610
|
688 689 |
pr_debug("Poll start "); |
4d12b8b12
|
690 |
if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
fe7c58007
|
691 692 |
((!info->attrs[NFC_ATTR_IM_PROTOCOLS] && !info->attrs[NFC_ATTR_PROTOCOLS]) && |
0f4507722
|
693 |
!info->attrs[NFC_ATTR_TM_PROTOCOLS])) |
4d12b8b12
|
694 695 696 |
return -EINVAL; idx = nla_get_u32(info->attrs[NFC_ATTR_DEVICE_INDEX]); |
fe7c58007
|
697 698 699 |
if (info->attrs[NFC_ATTR_TM_PROTOCOLS]) tm_protocols = nla_get_u32(info->attrs[NFC_ATTR_TM_PROTOCOLS]); |
fe7c58007
|
700 701 702 |
if (info->attrs[NFC_ATTR_IM_PROTOCOLS]) im_protocols = nla_get_u32(info->attrs[NFC_ATTR_IM_PROTOCOLS]); |
5e50ee3ae
|
703 704 |
else if (info->attrs[NFC_ATTR_PROTOCOLS]) im_protocols = nla_get_u32(info->attrs[NFC_ATTR_PROTOCOLS]); |
4d12b8b12
|
705 706 707 708 709 710 |
dev = nfc_get_device(idx); if (!dev) return -ENODEV; mutex_lock(&dev->genl_data.genl_data_mutex); |
fe7c58007
|
711 |
rc = nfc_start_poll(dev, im_protocols, tm_protocols); |
4d12b8b12
|
712 |
if (!rc) |
15e473046
|
713 |
dev->genl_data.poll_req_portid = info->snd_portid; |
4d12b8b12
|
714 715 716 717 718 719 720 721 722 723 724 725 |
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; |
4d12b8b12
|
726 727 728 729 730 731 732 733 |
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; |
a831b9132
|
734 735 736 737 738 739 740 741 |
device_lock(&dev->dev); if (!dev->polling) { device_unlock(&dev->dev); return -EINVAL; } device_unlock(&dev->dev); |
4d12b8b12
|
742 |
mutex_lock(&dev->genl_data.genl_data_mutex); |
15e473046
|
743 |
if (dev->genl_data.poll_req_portid != info->snd_portid) { |
4d12b8b12
|
744 745 746 747 748 |
rc = -EBUSY; goto out; } rc = nfc_stop_poll(dev); |
15e473046
|
749 |
dev->genl_data.poll_req_portid = 0; |
4d12b8b12
|
750 751 752 753 754 755 |
out: mutex_unlock(&dev->genl_data.genl_data_mutex); nfc_put_device(dev); return rc; } |
1ed28f610
|
756 757 758 759 760 |
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; |
47807d3db
|
761 |
u8 comm; |
1ed28f610
|
762 763 764 765 766 |
pr_debug("DEP link up "); if (!info->attrs[NFC_ATTR_DEVICE_INDEX] || |
47807d3db
|
767 |
!info->attrs[NFC_ATTR_COMM_MODE]) |
1ed28f610
|
768 769 770 771 772 773 774 775 776 |
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]); |
1ed28f610
|
777 778 779 |
if (comm != NFC_COMM_ACTIVE && comm != NFC_COMM_PASSIVE) return -EINVAL; |
1ed28f610
|
780 781 782 |
dev = nfc_get_device(idx); if (!dev) return -ENODEV; |
47807d3db
|
783 |
rc = nfc_dep_link_up(dev, tgt_idx, comm); |
1ed28f610
|
784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 |
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; } |
52feb444a
|
810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 |
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; } |
d9b8d8e19
|
949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 |
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; } |
9ea7187c5
|
1038 |
static int nfc_genl_fw_download(struct sk_buff *skb, struct genl_info *info) |
9674da875
|
1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 |
{ 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)); |
9ea7187c5
|
1056 |
rc = nfc_fw_download(dev, firmware_name); |
9674da875
|
1057 1058 1059 1060 |
nfc_put_device(dev); return rc; } |
352a5f5fb
|
1061 1062 |
int nfc_genl_fw_download_done(struct nfc_dev *dev, const char *firmware_name, u32 result) |
9674da875
|
1063 1064 1065 1066 1067 1068 1069 1070 1071 |
{ 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, |
9ea7187c5
|
1072 |
NFC_CMD_FW_DOWNLOAD); |
9674da875
|
1073 1074 1075 1076 |
if (!hdr) goto free_msg; if (nla_put_string(msg, NFC_ATTR_FIRMWARE_NAME, firmware_name) || |
352a5f5fb
|
1077 |
nla_put_u32(msg, NFC_ATTR_FIRMWARE_DOWNLOAD_STATUS, result) || |
9674da875
|
1078 1079 1080 1081 |
nla_put_u32(msg, NFC_ATTR_DEVICE_INDEX, dev->idx)) goto nla_put_failure; genlmsg_end(msg, hdr); |
2a94fe48f
|
1082 |
genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
9674da875
|
1083 1084 1085 1086 1087 1088 1089 1090 1091 |
return 0; nla_put_failure: genlmsg_cancel(msg, hdr); free_msg: nlmsg_free(msg); return -EMSGSIZE; } |
be0856535
|
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 |
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; } |
ac22ac466
|
1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 |
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; } |
5ce3f32b5
|
1221 1222 1223 1224 |
struct se_io_ctx { u32 dev_idx; u32 se_idx; }; |
ddc1a70b5
|
1225 |
static void se_io_cb(void *context, u8 *apdu, size_t apdu_len, int err) |
5ce3f32b5
|
1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 |
{ 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); |
2a94fe48f
|
1248 |
genlmsg_multicast(&nfc_genl_family, msg, 0, 0, GFP_KERNEL); |
5ce3f32b5
|
1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 |
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); } |
4534de830
|
1303 |
static const struct genl_ops nfc_genl_ops[] = { |
4d12b8b12
|
1304 1305 1306 1307 1308 1309 |
{ .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, |
8b3fe7b59
|
1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 |
}, { .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, |
4d12b8b12
|
1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 |
}, { .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, }, { |
1ed28f610
|
1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 |
.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, }, { |
4d12b8b12
|
1342 1343 1344 1345 1346 |
.cmd = NFC_CMD_GET_TARGET, .dumpit = nfc_genl_dump_targets, .done = nfc_genl_dump_targets_done, .policy = nfc_genl_policy, }, |
52feb444a
|
1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 |
{ .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, }, |
d9b8d8e19
|
1357 1358 1359 1360 1361 |
{ .cmd = NFC_CMD_LLC_SDREQ, .doit = nfc_genl_llc_sdreq, .policy = nfc_genl_policy, }, |
9674da875
|
1362 |
{ |
9ea7187c5
|
1363 1364 |
.cmd = NFC_CMD_FW_DOWNLOAD, .doit = nfc_genl_fw_download, |
9674da875
|
1365 1366 |
.policy = nfc_genl_policy, }, |
be0856535
|
1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 |
{ .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, }, |
ac22ac466
|
1377 1378 1379 1380 1381 1382 |
{ .cmd = NFC_CMD_GET_SE, .dumpit = nfc_genl_dump_ses, .done = nfc_genl_dump_ses_done, .policy = nfc_genl_policy, }, |
5ce3f32b5
|
1383 1384 1385 1386 1387 |
{ .cmd = NFC_CMD_SE_IO, .doit = nfc_genl_se_io, .policy = nfc_genl_policy, }, |
4d12b8b12
|
1388 |
}; |
3c0cc8aa2
|
1389 1390 1391 |
struct urelease_work { struct work_struct w; |
c487606f8
|
1392 |
int portid; |
3c0cc8aa2
|
1393 1394 1395 |
}; static void nfc_urelease_event_work(struct work_struct *work) |
4d12b8b12
|
1396 |
{ |
3c0cc8aa2
|
1397 |
struct urelease_work *w = container_of(work, struct urelease_work, w); |
4d12b8b12
|
1398 1399 |
struct class_dev_iter iter; struct nfc_dev *dev; |
c487606f8
|
1400 1401 |
pr_debug("portid %d ", w->portid); |
4d12b8b12
|
1402 |
|
3c0cc8aa2
|
1403 |
mutex_lock(&nfc_devlist_mutex); |
4d12b8b12
|
1404 1405 1406 1407 1408 |
nfc_device_iter_init(&iter); dev = nfc_device_iter_next(&iter); while (dev) { |
3c0cc8aa2
|
1409 |
mutex_lock(&dev->genl_data.genl_data_mutex); |
c487606f8
|
1410 |
if (dev->genl_data.poll_req_portid == w->portid) { |
4d12b8b12
|
1411 |
nfc_stop_poll(dev); |
15e473046
|
1412 |
dev->genl_data.poll_req_portid = 0; |
4d12b8b12
|
1413 |
} |
3c0cc8aa2
|
1414 1415 |
mutex_unlock(&dev->genl_data.genl_data_mutex); |
4d12b8b12
|
1416 1417 1418 1419 |
dev = nfc_device_iter_next(&iter); } nfc_device_iter_exit(&iter); |
3c0cc8aa2
|
1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 |
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; |
c487606f8
|
1433 1434 |
pr_debug("NETLINK_URELEASE event from id %d ", n->portid); |
3c0cc8aa2
|
1435 1436 1437 1438 |
w = kmalloc(sizeof(*w), GFP_ATOMIC); if (w) { INIT_WORK((struct work_struct *) w, nfc_urelease_event_work); |
c487606f8
|
1439 |
w->portid = n->portid; |
3c0cc8aa2
|
1440 1441 |
schedule_work((struct work_struct *) w); } |
4d12b8b12
|
1442 1443 1444 1445 1446 1447 |
out: return NOTIFY_DONE; } void nfc_genl_data_init(struct nfc_genl_data *genl_data) { |
15e473046
|
1448 |
genl_data->poll_req_portid = 0; |
4d12b8b12
|
1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 |
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; |
2a94fe48f
|
1469 1470 1471 |
rc = genl_register_family_with_ops_groups(&nfc_genl_family, nfc_genl_ops, nfc_genl_mcgrps); |
4d12b8b12
|
1472 1473 |
if (rc) return rc; |
4d12b8b12
|
1474 |
netlink_register_notifier(&nl_notifier); |
2a94fe48f
|
1475 |
return 0; |
4d12b8b12
|
1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 |
} /** * 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); } |