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1// SPDX-License-Identifier: GPL-2.02/*3 * Netlink routines for CIFS4 *5 * Copyright (c) 2020 Samuel Cabrero <scabrero@suse.de>6 */7 8#include <net/genetlink.h>9#include <uapi/linux/cifs/cifs_netlink.h>10 11#include "netlink.h"12#include "cifsglob.h"13#include "cifs_debug.h"14#include "cifs_swn.h"15 16static const struct nla_policy cifs_genl_policy[CIFS_GENL_ATTR_MAX + 1] = {17 [CIFS_GENL_ATTR_SWN_REGISTRATION_ID] = { .type = NLA_U32 },18 [CIFS_GENL_ATTR_SWN_NET_NAME] = { .type = NLA_STRING },19 [CIFS_GENL_ATTR_SWN_SHARE_NAME] = { .type = NLA_STRING },20 [CIFS_GENL_ATTR_SWN_IP] = { .len = sizeof(struct sockaddr_storage) },21 [CIFS_GENL_ATTR_SWN_NET_NAME_NOTIFY] = { .type = NLA_FLAG },22 [CIFS_GENL_ATTR_SWN_SHARE_NAME_NOTIFY] = { .type = NLA_FLAG },23 [CIFS_GENL_ATTR_SWN_IP_NOTIFY] = { .type = NLA_FLAG },24 [CIFS_GENL_ATTR_SWN_KRB_AUTH] = { .type = NLA_FLAG },25 [CIFS_GENL_ATTR_SWN_USER_NAME] = { .type = NLA_STRING },26 [CIFS_GENL_ATTR_SWN_PASSWORD] = { .type = NLA_STRING },27 [CIFS_GENL_ATTR_SWN_DOMAIN_NAME] = { .type = NLA_STRING },28 [CIFS_GENL_ATTR_SWN_NOTIFICATION_TYPE] = { .type = NLA_U32 },29 [CIFS_GENL_ATTR_SWN_RESOURCE_STATE] = { .type = NLA_U32 },30 [CIFS_GENL_ATTR_SWN_RESOURCE_NAME] = { .type = NLA_STRING},31};32 33static const struct genl_ops cifs_genl_ops[] = {34 {35 .cmd = CIFS_GENL_CMD_SWN_NOTIFY,36 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,37 .doit = cifs_swn_notify,38 },39};40 41static const struct genl_multicast_group cifs_genl_mcgrps[] = {42 [CIFS_GENL_MCGRP_SWN] = { .name = CIFS_GENL_MCGRP_SWN_NAME },43};44 45struct genl_family cifs_genl_family = {46 .name = CIFS_GENL_NAME,47 .version = CIFS_GENL_VERSION,48 .hdrsize = 0,49 .maxattr = CIFS_GENL_ATTR_MAX,50 .module = THIS_MODULE,51 .policy = cifs_genl_policy,52 .ops = cifs_genl_ops,53 .n_ops = ARRAY_SIZE(cifs_genl_ops),54 .resv_start_op = CIFS_GENL_CMD_SWN_NOTIFY + 1,55 .mcgrps = cifs_genl_mcgrps,56 .n_mcgrps = ARRAY_SIZE(cifs_genl_mcgrps),57};58 59/**60 * cifs_genl_init - Register generic netlink family61 *62 * Return zero if initialized successfully, otherwise non-zero.63 */64int cifs_genl_init(void)65{66 int ret;67 68 ret = genl_register_family(&cifs_genl_family);69 if (ret < 0) {70 cifs_dbg(VFS, "%s: failed to register netlink family\n",71 __func__);72 return ret;73 }74 75 return 0;76}77 78/**79 * cifs_genl_exit - Unregister generic netlink family80 */81void cifs_genl_exit(void)82{83 int ret;84 85 ret = genl_unregister_family(&cifs_genl_family);86 if (ret < 0) {87 cifs_dbg(VFS, "%s: failed to unregister netlink family\n",88 __func__);89 }90}91