smb: move client and server files to common directory fs/smb

Move CIFS/SMB3 related client and server files (cifs.ko and ksmbd.ko
and helper modules) to new fs/smb subdirectory:

   fs/cifs --> fs/smb/client
   fs/ksmbd --> fs/smb/server
   fs/smbfs_common --> fs/smb/common

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

1 files changed, 0 insertions, 674 deletions

diff --git a/fs/cifs/cifs_swn.c b/fs/cifs/cifs_swn.c
deleted file mode 100644
index 7233c6a7e6d7..000000000000
--- a/fs/cifs/cifs_swn.c
+++ /dev/null
@@ -1,674 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Witness Service client for CIFS
- *
- * Copyright (c) 2020 Samuel Cabrero <scabrero@suse.de>
- */
-
-#include <linux/kref.h>
-#include <net/genetlink.h>
-#include <uapi/linux/cifs/cifs_netlink.h>
-
-#include "cifs_swn.h"
-#include "cifsglob.h"
-#include "cifsproto.h"
-#include "fscache.h"
-#include "cifs_debug.h"
-#include "netlink.h"
-
-static DEFINE_IDR(cifs_swnreg_idr);
-static DEFINE_MUTEX(cifs_swnreg_idr_mutex);
-
-struct cifs_swn_reg {
-	int id;
-	struct kref ref_count;
-
-	const char *net_name;
-	const char *share_name;
-	bool net_name_notify;
-	bool share_name_notify;
-	bool ip_notify;
-
-	struct cifs_tcon *tcon;
-};
-
-static int cifs_swn_auth_info_krb(struct cifs_tcon *tcon, struct sk_buff *skb)
-{
-	int ret;
-
-	ret = nla_put_flag(skb, CIFS_GENL_ATTR_SWN_KRB_AUTH);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-static int cifs_swn_auth_info_ntlm(struct cifs_tcon *tcon, struct sk_buff *skb)
-{
-	int ret;
-
-	if (tcon->ses->user_name != NULL) {
-		ret = nla_put_string(skb, CIFS_GENL_ATTR_SWN_USER_NAME, tcon->ses->user_name);
-		if (ret < 0)
-			return ret;
-	}
-
-	if (tcon->ses->password != NULL) {
-		ret = nla_put_string(skb, CIFS_GENL_ATTR_SWN_PASSWORD, tcon->ses->password);
-		if (ret < 0)
-			return ret;
-	}
-
-	if (tcon->ses->domainName != NULL) {
-		ret = nla_put_string(skb, CIFS_GENL_ATTR_SWN_DOMAIN_NAME, tcon->ses->domainName);
-		if (ret < 0)
-			return ret;
-	}
-
-	return 0;
-}
-
-/*
- * Sends a register message to the userspace daemon based on the registration.
- * The authentication information to connect to the witness service is bundled
- * into the message.
- */
-static int cifs_swn_send_register_message(struct cifs_swn_reg *swnreg)
-{
-	struct sk_buff *skb;
-	struct genlmsghdr *hdr;
-	enum securityEnum authtype;
-	struct sockaddr_storage *addr;
-	int ret;
-
-	skb = genlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
-	if (skb == NULL) {
-		ret = -ENOMEM;
-		goto fail;
-	}
-
-	hdr = genlmsg_put(skb, 0, 0, &cifs_genl_family, 0, CIFS_GENL_CMD_SWN_REGISTER);
-	if (hdr == NULL) {
-		ret = -ENOMEM;
-		goto nlmsg_fail;
-	}
-
-	ret = nla_put_u32(skb, CIFS_GENL_ATTR_SWN_REGISTRATION_ID, swnreg->id);
-	if (ret < 0)
-		goto nlmsg_fail;
-
-	ret = nla_put_string(skb, CIFS_GENL_ATTR_SWN_NET_NAME, swnreg->net_name);
-	if (ret < 0)
-		goto nlmsg_fail;
-
-	ret = nla_put_string(skb, CIFS_GENL_ATTR_SWN_SHARE_NAME, swnreg->share_name);
-	if (ret < 0)
-		goto nlmsg_fail;
-
-	/*
-	 * If there is an address stored use it instead of the server address, because we are
-	 * in the process of reconnecting to it after a share has been moved or we have been
-	 * told to switch to it (client move message). In these cases we unregister from the
-	 * server address and register to the new address when we receive the notification.
-	 */
-	if (swnreg->tcon->ses->server->use_swn_dstaddr)
-		addr = &swnreg->tcon->ses->server->swn_dstaddr;
-	else
-		addr = &swnreg->tcon->ses->server->dstaddr;
-
-	ret = nla_put(skb, CIFS_GENL_ATTR_SWN_IP, sizeof(struct sockaddr_storage), addr);
-	if (ret < 0)
-		goto nlmsg_fail;
-
-	if (swnreg->net_name_notify) {
-		ret = nla_put_flag(skb, CIFS_GENL_ATTR_SWN_NET_NAME_NOTIFY);
-		if (ret < 0)
-			goto nlmsg_fail;
-	}
-
-	if (swnreg->share_name_notify) {
-		ret = nla_put_flag(skb, CIFS_GENL_ATTR_SWN_SHARE_NAME_NOTIFY);
-		if (ret < 0)
-			goto nlmsg_fail;
-	}
-
-	if (swnreg->ip_notify) {
-		ret = nla_put_flag(skb, CIFS_GENL_ATTR_SWN_IP_NOTIFY);
-		if (ret < 0)
-			goto nlmsg_fail;
-	}
-
-	authtype = cifs_select_sectype(swnreg->tcon->ses->server, swnreg->tcon->ses->sectype);
-	switch (authtype) {
-	case Kerberos:
-		ret = cifs_swn_auth_info_krb(swnreg->tcon, skb);
-		if (ret < 0) {
-			cifs_dbg(VFS, "%s: Failed to get kerberos auth info: %d\n", __func__, ret);
-			goto nlmsg_fail;
-		}
-		break;
-	case NTLMv2:
-	case RawNTLMSSP:
-		ret = cifs_swn_auth_info_ntlm(swnreg->tcon, skb);
-		if (ret < 0) {
-			cifs_dbg(VFS, "%s: Failed to get NTLM auth info: %d\n", __func__, ret);
-			goto nlmsg_fail;
-		}
-		break;
-	default:
-		cifs_dbg(VFS, "%s: secType %d not supported!\n", __func__, authtype);
-		ret = -EINVAL;
-		goto nlmsg_fail;
-	}
-
-	genlmsg_end(skb, hdr);
-	genlmsg_multicast(&cifs_genl_family, skb, 0, CIFS_GENL_MCGRP_SWN, GFP_ATOMIC);
-
-	cifs_dbg(FYI, "%s: Message to register for network name %s with id %d sent\n", __func__,
-			swnreg->net_name, swnreg->id);
-
-	return 0;
-
-nlmsg_fail:
-	genlmsg_cancel(skb, hdr);
-	nlmsg_free(skb);
-fail:
-	return ret;
-}
-
-/*
- * Sends an uregister message to the userspace daemon based on the registration
- */
-static int cifs_swn_send_unregister_message(struct cifs_swn_reg *swnreg)
-{
-	struct sk_buff *skb;
-	struct genlmsghdr *hdr;
-	int ret;
-
-	skb = genlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
-	if (skb == NULL)
-		return -ENOMEM;
-
-	hdr = genlmsg_put(skb, 0, 0, &cifs_genl_family, 0, CIFS_GENL_CMD_SWN_UNREGISTER);
-	if (hdr == NULL) {
-		ret = -ENOMEM;
-		goto nlmsg_fail;
-	}
-
-	ret = nla_put_u32(skb, CIFS_GENL_ATTR_SWN_REGISTRATION_ID, swnreg->id);
-	if (ret < 0)
-		goto nlmsg_fail;
-
-	ret = nla_put_string(skb, CIFS_GENL_ATTR_SWN_NET_NAME, swnreg->net_name);
-	if (ret < 0)
-		goto nlmsg_fail;
-
-	ret = nla_put_string(skb, CIFS_GENL_ATTR_SWN_SHARE_NAME, swnreg->share_name);
-	if (ret < 0)
-		goto nlmsg_fail;
-
-	ret = nla_put(skb, CIFS_GENL_ATTR_SWN_IP, sizeof(struct sockaddr_storage),
-			&swnreg->tcon->ses->server->dstaddr);
-	if (ret < 0)
-		goto nlmsg_fail;
-
-	if (swnreg->net_name_notify) {
-		ret = nla_put_flag(skb, CIFS_GENL_ATTR_SWN_NET_NAME_NOTIFY);
-		if (ret < 0)
-			goto nlmsg_fail;
-	}
-
-	if (swnreg->share_name_notify) {
-		ret = nla_put_flag(skb, CIFS_GENL_ATTR_SWN_SHARE_NAME_NOTIFY);
-		if (ret < 0)
-			goto nlmsg_fail;
-	}
-
-	if (swnreg->ip_notify) {
-		ret = nla_put_flag(skb, CIFS_GENL_ATTR_SWN_IP_NOTIFY);
-		if (ret < 0)
-			goto nlmsg_fail;
-	}
-
-	genlmsg_end(skb, hdr);
-	genlmsg_multicast(&cifs_genl_family, skb, 0, CIFS_GENL_MCGRP_SWN, GFP_ATOMIC);
-
-	cifs_dbg(FYI, "%s: Message to unregister for network name %s with id %d sent\n", __func__,
-			swnreg->net_name, swnreg->id);
-
-	return 0;
-
-nlmsg_fail:
-	genlmsg_cancel(skb, hdr);
-	nlmsg_free(skb);
-	return ret;
-}
-
-/*
- * Try to find a matching registration for the tcon's server name and share name.
- * Calls to this function must be protected by cifs_swnreg_idr_mutex.
- * TODO Try to avoid memory allocations
- */
-static struct cifs_swn_reg *cifs_find_swn_reg(struct cifs_tcon *tcon)
-{
-	struct cifs_swn_reg *swnreg;
-	int id;
-	const char *share_name;
-	const char *net_name;
-
-	net_name = extract_hostname(tcon->tree_name);
-	if (IS_ERR(net_name)) {
-		int ret;
-
-		ret = PTR_ERR(net_name);
-		cifs_dbg(VFS, "%s: failed to extract host name from target '%s': %d\n",
-				__func__, tcon->tree_name, ret);
-		return ERR_PTR(-EINVAL);
-	}
-
-	share_name = extract_sharename(tcon->tree_name);
-	if (IS_ERR(share_name)) {
-		int ret;
-
-		ret = PTR_ERR(share_name);
-		cifs_dbg(VFS, "%s: failed to extract share name from target '%s': %d\n",
-				__func__, tcon->tree_name, ret);
-		kfree(net_name);
-		return ERR_PTR(-EINVAL);
-	}
-
-	idr_for_each_entry(&cifs_swnreg_idr, swnreg, id) {
-		if (strcasecmp(swnreg->net_name, net_name) != 0
-		    || strcasecmp(swnreg->share_name, share_name) != 0) {
-			continue;
-		}
-
-		cifs_dbg(FYI, "Existing swn registration for %s:%s found\n", swnreg->net_name,
-				swnreg->share_name);
-
-		kfree(net_name);
-		kfree(share_name);
-
-		return swnreg;
-	}
-
-	kfree(net_name);
-	kfree(share_name);
-
-	return ERR_PTR(-EEXIST);
-}
-
-/*
- * Get a registration for the tcon's server and share name, allocating a new one if it does not
- * exists
- */
-static struct cifs_swn_reg *cifs_get_swn_reg(struct cifs_tcon *tcon)
-{
-	struct cifs_swn_reg *reg = NULL;
-	int ret;
-
-	mutex_lock(&cifs_swnreg_idr_mutex);
-
-	/* Check if we are already registered for this network and share names */
-	reg = cifs_find_swn_reg(tcon);
-	if (!IS_ERR(reg)) {
-		kref_get(&reg->ref_count);
-		mutex_unlock(&cifs_swnreg_idr_mutex);
-		return reg;
-	} else if (PTR_ERR(reg) != -EEXIST) {
-		mutex_unlock(&cifs_swnreg_idr_mutex);
-		return reg;
-	}
-
-	reg = kmalloc(sizeof(struct cifs_swn_reg), GFP_ATOMIC);
-	if (reg == NULL) {
-		mutex_unlock(&cifs_swnreg_idr_mutex);
-		return ERR_PTR(-ENOMEM);
-	}
-
-	kref_init(&reg->ref_count);
-
-	reg->id = idr_alloc(&cifs_swnreg_idr, reg, 1, 0, GFP_ATOMIC);
-	if (reg->id < 0) {
-		cifs_dbg(FYI, "%s: failed to allocate registration id\n", __func__);
-		ret = reg->id;
-		goto fail;
-	}
-
-	reg->net_name = extract_hostname(tcon->tree_name);
-	if (IS_ERR(reg->net_name)) {
-		ret = PTR_ERR(reg->net_name);
-		cifs_dbg(VFS, "%s: failed to extract host name from target: %d\n", __func__, ret);
-		goto fail_idr;
-	}
-
-	reg->share_name = extract_sharename(tcon->tree_name);
-	if (IS_ERR(reg->share_name)) {
-		ret = PTR_ERR(reg->share_name);
-		cifs_dbg(VFS, "%s: failed to extract share name from target: %d\n", __func__, ret);
-		goto fail_net_name;
-	}
-
-	reg->net_name_notify = true;
-	reg->share_name_notify = true;
-	reg->ip_notify = (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT);
-
-	reg->tcon = tcon;
-
-	mutex_unlock(&cifs_swnreg_idr_mutex);
-
-	return reg;
-
-fail_net_name:
-	kfree(reg->net_name);
-fail_idr:
-	idr_remove(&cifs_swnreg_idr, reg->id);
-fail:
-	kfree(reg);
-	mutex_unlock(&cifs_swnreg_idr_mutex);
-	return ERR_PTR(ret);
-}
-
-static void cifs_swn_reg_release(struct kref *ref)
-{
-	struct cifs_swn_reg *swnreg = container_of(ref, struct cifs_swn_reg, ref_count);
-	int ret;
-
-	ret = cifs_swn_send_unregister_message(swnreg);
-	if (ret < 0)
-		cifs_dbg(VFS, "%s: Failed to send unregister message: %d\n", __func__, ret);
-
-	idr_remove(&cifs_swnreg_idr, swnreg->id);
-	kfree(swnreg->net_name);
-	kfree(swnreg->share_name);
-	kfree(swnreg);
-}
-
-static void cifs_put_swn_reg(struct cifs_swn_reg *swnreg)
-{
-	mutex_lock(&cifs_swnreg_idr_mutex);
-	kref_put(&swnreg->ref_count, cifs_swn_reg_release);
-	mutex_unlock(&cifs_swnreg_idr_mutex);
-}
-
-static int cifs_swn_resource_state_changed(struct cifs_swn_reg *swnreg, const char *name, int state)
-{
-	switch (state) {
-	case CIFS_SWN_RESOURCE_STATE_UNAVAILABLE:
-		cifs_dbg(FYI, "%s: resource name '%s' become unavailable\n", __func__, name);
-		cifs_signal_cifsd_for_reconnect(swnreg->tcon->ses->server, true);
-		break;
-	case CIFS_SWN_RESOURCE_STATE_AVAILABLE:
-		cifs_dbg(FYI, "%s: resource name '%s' become available\n", __func__, name);
-		cifs_signal_cifsd_for_reconnect(swnreg->tcon->ses->server, true);
-		break;
-	case CIFS_SWN_RESOURCE_STATE_UNKNOWN:
-		cifs_dbg(FYI, "%s: resource name '%s' changed to unknown state\n", __func__, name);
-		break;
-	}
-	return 0;
-}
-
-static bool cifs_sockaddr_equal(struct sockaddr_storage *addr1, struct sockaddr_storage *addr2)
-{
-	if (addr1->ss_family != addr2->ss_family)
-		return false;
-
-	if (addr1->ss_family == AF_INET) {
-		return (memcmp(&((const struct sockaddr_in *)addr1)->sin_addr,
-				&((const struct sockaddr_in *)addr2)->sin_addr,
-				sizeof(struct in_addr)) == 0);
-	}
-
-	if (addr1->ss_family == AF_INET6) {
-		return (memcmp(&((const struct sockaddr_in6 *)addr1)->sin6_addr,
-				&((const struct sockaddr_in6 *)addr2)->sin6_addr,
-				sizeof(struct in6_addr)) == 0);
-	}
-
-	return false;
-}
-
-static int cifs_swn_store_swn_addr(const struct sockaddr_storage *new,
-				   const struct sockaddr_storage *old,
-				   struct sockaddr_storage *dst)
-{
-	__be16 port = cpu_to_be16(CIFS_PORT);
-
-	if (old->ss_family == AF_INET) {
-		struct sockaddr_in *ipv4 = (struct sockaddr_in *)old;
-
-		port = ipv4->sin_port;
-	} else if (old->ss_family == AF_INET6) {
-		struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)old;
-
-		port = ipv6->sin6_port;
-	}
-
-	if (new->ss_family == AF_INET) {
-		struct sockaddr_in *ipv4 = (struct sockaddr_in *)new;
-
-		ipv4->sin_port = port;
-	} else if (new->ss_family == AF_INET6) {
-		struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)new;
-
-		ipv6->sin6_port = port;
-	}
-
-	*dst = *new;
-
-	return 0;
-}
-
-static int cifs_swn_reconnect(struct cifs_tcon *tcon, struct sockaddr_storage *addr)
-{
-	int ret = 0;
-
-	/* Store the reconnect address */
-	cifs_server_lock(tcon->ses->server);
-	if (cifs_sockaddr_equal(&tcon->ses->server->dstaddr, addr))
-		goto unlock;
-
-	ret = cifs_swn_store_swn_addr(addr, &tcon->ses->server->dstaddr,
-				      &tcon->ses->server->swn_dstaddr);
-	if (ret < 0) {
-		cifs_dbg(VFS, "%s: failed to store address: %d\n", __func__, ret);
-		goto unlock;
-	}
-	tcon->ses->server->use_swn_dstaddr = true;
-
-	/*
-	 * Unregister to stop receiving notifications for the old IP address.
-	 */
-	ret = cifs_swn_unregister(tcon);
-	if (ret < 0) {
-		cifs_dbg(VFS, "%s: Failed to unregister for witness notifications: %d\n",
-			 __func__, ret);
-		goto unlock;
-	}
-
-	/*
-	 * And register to receive notifications for the new IP address now that we have
-	 * stored the new address.
-	 */
-	ret = cifs_swn_register(tcon);
-	if (ret < 0) {
-		cifs_dbg(VFS, "%s: Failed to register for witness notifications: %d\n",
-			 __func__, ret);
-		goto unlock;
-	}
-
-	cifs_signal_cifsd_for_reconnect(tcon->ses->server, false);
-
-unlock:
-	cifs_server_unlock(tcon->ses->server);
-
-	return ret;
-}
-
-static int cifs_swn_client_move(struct cifs_swn_reg *swnreg, struct sockaddr_storage *addr)
-{
-	struct sockaddr_in *ipv4 = (struct sockaddr_in *)addr;
-	struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)addr;
-
-	if (addr->ss_family == AF_INET)
-		cifs_dbg(FYI, "%s: move to %pI4\n", __func__, &ipv4->sin_addr);
-	else if (addr->ss_family == AF_INET6)
-		cifs_dbg(FYI, "%s: move to %pI6\n", __func__, &ipv6->sin6_addr);
-
-	return cifs_swn_reconnect(swnreg->tcon, addr);
-}
-
-int cifs_swn_notify(struct sk_buff *skb, struct genl_info *info)
-{
-	struct cifs_swn_reg *swnreg;
-	char name[256];
-	int type;
-
-	if (info->attrs[CIFS_GENL_ATTR_SWN_REGISTRATION_ID]) {
-		int swnreg_id;
-
-		swnreg_id = nla_get_u32(info->attrs[CIFS_GENL_ATTR_SWN_REGISTRATION_ID]);
-		mutex_lock(&cifs_swnreg_idr_mutex);
-		swnreg = idr_find(&cifs_swnreg_idr, swnreg_id);
-		mutex_unlock(&cifs_swnreg_idr_mutex);
-		if (swnreg == NULL) {
-			cifs_dbg(FYI, "%s: registration id %d not found\n", __func__, swnreg_id);
-			return -EINVAL;
-		}
-	} else {
-		cifs_dbg(FYI, "%s: missing registration id attribute\n", __func__);
-		return -EINVAL;
-	}
-
-	if (info->attrs[CIFS_GENL_ATTR_SWN_NOTIFICATION_TYPE]) {
-		type = nla_get_u32(info->attrs[CIFS_GENL_ATTR_SWN_NOTIFICATION_TYPE]);
-	} else {
-		cifs_dbg(FYI, "%s: missing notification type attribute\n", __func__);
-		return -EINVAL;
-	}
-
-	switch (type) {
-	case CIFS_SWN_NOTIFICATION_RESOURCE_CHANGE: {
-		int state;
-
-		if (info->attrs[CIFS_GENL_ATTR_SWN_RESOURCE_NAME]) {
-			nla_strscpy(name, info->attrs[CIFS_GENL_ATTR_SWN_RESOURCE_NAME],
-					sizeof(name));
-		} else {
-			cifs_dbg(FYI, "%s: missing resource name attribute\n", __func__);
-			return -EINVAL;
-		}
-		if (info->attrs[CIFS_GENL_ATTR_SWN_RESOURCE_STATE]) {
-			state = nla_get_u32(info->attrs[CIFS_GENL_ATTR_SWN_RESOURCE_STATE]);
-		} else {
-			cifs_dbg(FYI, "%s: missing resource state attribute\n", __func__);
-			return -EINVAL;
-		}
-		return cifs_swn_resource_state_changed(swnreg, name, state);
-	}
-	case CIFS_SWN_NOTIFICATION_CLIENT_MOVE: {
-		struct sockaddr_storage addr;
-
-		if (info->attrs[CIFS_GENL_ATTR_SWN_IP]) {
-			nla_memcpy(&addr, info->attrs[CIFS_GENL_ATTR_SWN_IP], sizeof(addr));
-		} else {
-			cifs_dbg(FYI, "%s: missing IP address attribute\n", __func__);
-			return -EINVAL;
-		}
-		return cifs_swn_client_move(swnreg, &addr);
-	}
-	default:
-		cifs_dbg(FYI, "%s: unknown notification type %d\n", __func__, type);
-		break;
-	}
-
-	return 0;
-}
-
-int cifs_swn_register(struct cifs_tcon *tcon)
-{
-	struct cifs_swn_reg *swnreg;
-	int ret;
-
-	swnreg = cifs_get_swn_reg(tcon);
-	if (IS_ERR(swnreg))
-		return PTR_ERR(swnreg);
-
-	ret = cifs_swn_send_register_message(swnreg);
-	if (ret < 0) {
-		cifs_dbg(VFS, "%s: Failed to send swn register message: %d\n", __func__, ret);
-		/* Do not put the swnreg or return error, the echo task will retry */
-	}
-
-	return 0;
-}
-
-int cifs_swn_unregister(struct cifs_tcon *tcon)
-{
-	struct cifs_swn_reg *swnreg;
-
-	mutex_lock(&cifs_swnreg_idr_mutex);
-
-	swnreg = cifs_find_swn_reg(tcon);
-	if (IS_ERR(swnreg)) {
-		mutex_unlock(&cifs_swnreg_idr_mutex);
-		return PTR_ERR(swnreg);
-	}
-
-	mutex_unlock(&cifs_swnreg_idr_mutex);
-
-	cifs_put_swn_reg(swnreg);
-
-	return 0;
-}
-
-void cifs_swn_dump(struct seq_file *m)
-{
-	struct cifs_swn_reg *swnreg;
-	struct sockaddr_in *sa;
-	struct sockaddr_in6 *sa6;
-	int id;
-
-	seq_puts(m, "Witness registrations:");
-
-	mutex_lock(&cifs_swnreg_idr_mutex);
-	idr_for_each_entry(&cifs_swnreg_idr, swnreg, id) {
-		seq_printf(m, "\nId: %u Refs: %u Network name: '%s'%s Share name: '%s'%s Ip address: ",
-				id, kref_read(&swnreg->ref_count),
-				swnreg->net_name, swnreg->net_name_notify ? "(y)" : "(n)",
-				swnreg->share_name, swnreg->share_name_notify ? "(y)" : "(n)");
-		switch (swnreg->tcon->ses->server->dstaddr.ss_family) {
-		case AF_INET:
-			sa = (struct sockaddr_in *) &swnreg->tcon->ses->server->dstaddr;
-			seq_printf(m, "%pI4", &sa->sin_addr.s_addr);
-			break;
-		case AF_INET6:
-			sa6 = (struct sockaddr_in6 *) &swnreg->tcon->ses->server->dstaddr;
-			seq_printf(m, "%pI6", &sa6->sin6_addr.s6_addr);
-			if (sa6->sin6_scope_id)
-				seq_printf(m, "%%%u", sa6->sin6_scope_id);
-			break;
-		default:
-			seq_puts(m, "(unknown)");
-		}
-		seq_printf(m, "%s", swnreg->ip_notify ? "(y)" : "(n)");
-	}
-	mutex_unlock(&cifs_swnreg_idr_mutex);
-	seq_puts(m, "\n");
-}
-
-void cifs_swn_check(void)
-{
-	struct cifs_swn_reg *swnreg;
-	int id;
-	int ret;
-
-	mutex_lock(&cifs_swnreg_idr_mutex);
-	idr_for_each_entry(&cifs_swnreg_idr, swnreg, id) {
-		ret = cifs_swn_send_register_message(swnreg);
-		if (ret < 0)
-			cifs_dbg(FYI, "%s: Failed to send register message: %d\n", __func__, ret);
-	}
-	mutex_unlock(&cifs_swnreg_idr_mutex);
-}