[v3,2/3] CIFS: use tcon_ipc instead of use_ipc parameter of SMB2_ioctl

Message ID 20180124124612.21993-3-aaptel@suse.com
State New
Headers show
Series
  • Make IPC a regular tcon and fix SMB2 domain-based DFS
Related show

Commit Message

Aurelien Aptel Jan. 24, 2018, 12:46 p.m.
Since IPC now has a tcon object, the caller can just pass it. This
allows domain-based DFS requests to work with smb2+.

Link: https://bugzilla.samba.org/show_bug.cgi?id=12917
Fixes: 9d49640a21bf ("CIFS: implement get_dfs_refer for SMB2+")
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
---
 fs/cifs/smb2file.c  |  2 +-
 fs/cifs/smb2ops.c   | 53 ++++++++++++++++++++++-------------------------------
 fs/cifs/smb2pdu.c   |  4 +---
 fs/cifs/smb2proto.h |  3 +--
 4 files changed, 25 insertions(+), 37 deletions(-)

Comments

Pavel Shilovskiy Jan. 26, 2018, 10:59 p.m. | #1
2018-01-24 4:46 GMT-08:00 Aurelien Aptel <aaptel@suse.com>:
> Since IPC now has a tcon object, the caller can just pass it. This
> allows domain-based DFS requests to work with smb2+.
>
> Link: https://bugzilla.samba.org/show_bug.cgi?id=12917
> Fixes: 9d49640a21bf ("CIFS: implement get_dfs_refer for SMB2+")
> Signed-off-by: Aurelien Aptel <aaptel@suse.com>
> ---
>  fs/cifs/smb2file.c  |  2 +-
>  fs/cifs/smb2ops.c   | 53 ++++++++++++++++++++++-------------------------------
>  fs/cifs/smb2pdu.c   |  4 +---
>  fs/cifs/smb2proto.h |  3 +--
>  4 files changed, 25 insertions(+), 37 deletions(-)
>
> diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
> index b4b1f0305f29..12af5dba742b 100644
> --- a/fs/cifs/smb2file.c
> +++ b/fs/cifs/smb2file.c
> @@ -74,7 +74,7 @@ smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
>                 nr_ioctl_req.Reserved = 0;
>                 rc = SMB2_ioctl(xid, oparms->tcon, fid->persistent_fid,
>                         fid->volatile_fid, FSCTL_LMR_REQUEST_RESILIENCY,
> -                       true /* is_fsctl */, false /* use_ipc */,
> +                       true /* is_fsctl */,
>                         (char *)&nr_ioctl_req, sizeof(nr_ioctl_req),
>                         NULL, NULL /* no return info */);
>                 if (rc == -EOPNOTSUPP) {
> diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
> index e3393ff5d458..eb68e2fcc500 100644
> --- a/fs/cifs/smb2ops.c
> +++ b/fs/cifs/smb2ops.c
> @@ -293,7 +293,6 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
>
>         rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
>                         FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
> -                       false /* use_ipc */,
>                         NULL /* no data input */, 0 /* no data input */,
>                         (char **)&out_buf, &ret_data_len);
>         if (rc != 0)
> @@ -792,7 +791,6 @@ SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
>
>         rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
>                         FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
> -                       false /* use_ipc */,
>                         NULL, 0 /* no input */,
>                         (char **)&res_key, &ret_data_len);
>
> @@ -858,8 +856,7 @@ smb2_copychunk_range(const unsigned int xid,
>                 /* Request server copy to target from src identified by key */
>                 rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
>                         trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
> -                       true /* is_fsctl */, false /* use_ipc */,
> -                       (char *)pcchunk,
> +                       true /* is_fsctl */, (char *)pcchunk,
>                         sizeof(struct copychunk_ioctl), (char **)&retbuf,
>                         &ret_data_len);
>                 if (rc == 0) {
> @@ -1020,7 +1017,7 @@ static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
>
>         rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
>                         cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
> -                       true /* is_fctl */, false /* use_ipc */,
> +                       true /* is_fctl */,
>                         &setsparse, 1, NULL, NULL);
>         if (rc) {
>                 tcon->broken_sparse_sup = true;
> @@ -1091,7 +1088,7 @@ smb2_duplicate_extents(const unsigned int xid,
>         rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
>                         trgtfile->fid.volatile_fid,
>                         FSCTL_DUPLICATE_EXTENTS_TO_FILE,
> -                       true /* is_fsctl */, false /* use_ipc */,
> +                       true /* is_fsctl */,
>                         (char *)&dup_ext_buf,
>                         sizeof(struct duplicate_extents_to_file),
>                         NULL,
> @@ -1126,7 +1123,7 @@ smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
>         return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
>                         cfile->fid.volatile_fid,
>                         FSCTL_SET_INTEGRITY_INFORMATION,
> -                       true /* is_fsctl */, false /* use_ipc */,
> +                       true /* is_fsctl */,
>                         (char *)&integr_info,
>                         sizeof(struct fsctl_set_integrity_information_req),
>                         NULL,
> @@ -1146,7 +1143,7 @@ smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
>         rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
>                         cfile->fid.volatile_fid,
>                         FSCTL_SRV_ENUMERATE_SNAPSHOTS,
> -                       true /* is_fsctl */, false /* use_ipc */,
> +                       true /* is_fsctl */,
>                         NULL, 0 /* no input data */,
>                         (char **)&retbuf,
>                         &ret_data_len);
> @@ -1365,16 +1362,20 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
>         cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
>
>         /*
> -        * Use any tcon from the current session. Here, the first one.
> +        * Try to use the IPC tcon, otherwise just use any
>          */
> -       spin_lock(&cifs_tcp_ses_lock);
> -       tcon = list_first_entry_or_null(&ses->tcon_list, struct cifs_tcon,
> -                                       tcon_list);
> -       if (tcon)
> -               tcon->tc_count++;
> -       spin_unlock(&cifs_tcp_ses_lock);
> +       tcon = ses->tcon_ipc;
> +       if (tcon == NULL) {
> +               spin_lock(&cifs_tcp_ses_lock);
> +               tcon = list_first_entry_or_null(&ses->tcon_list,
> +                                               struct cifs_tcon,
> +                                               tcon_list);
> +               if (tcon)
> +                       tcon->tc_count++;
> +               spin_unlock(&cifs_tcp_ses_lock);
> +       }
>
> -       if (!tcon) {
> +       if (tcon == NULL) {
>                 cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
>                          ses);
>                 rc = -ENOTCONN;
> @@ -1403,20 +1404,11 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
>         memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
>
>         do {
> -               /* try first with IPC */
>                 rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
>                                 FSCTL_DFS_GET_REFERRALS,
> -                               true /* is_fsctl */, true /* use_ipc */,
> +                               true /* is_fsctl */,
>                                 (char *)dfs_req, dfs_req_size,
>                                 (char **)&dfs_rsp, &dfs_rsp_size);
> -               if (rc == -ENOTCONN) {
> -                       /* try with normal tcon */
> -                       rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
> -                                       FSCTL_DFS_GET_REFERRALS,
> -                                       true /* is_fsctl */, false /*use_ipc*/,
> -                                       (char *)dfs_req, dfs_req_size,
> -                                       (char **)&dfs_rsp, &dfs_rsp_size);
> -               }
>         } while (rc == -EAGAIN);
>
>         if (rc) {
> @@ -1435,7 +1427,8 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
>         }
>
>   out:
> -       if (tcon) {
> +       if (tcon && !tcon->ipc) {
> +               /* ipc tcons are not refcounted */
>                 spin_lock(&cifs_tcp_ses_lock);
>                 tcon->tc_count--;
>                 spin_unlock(&cifs_tcp_ses_lock);
> @@ -1727,8 +1720,7 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
>
>         rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
>                         cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
> -                       true /* is_fctl */, false /* use_ipc */,
> -                       (char *)&fsctl_buf,
> +                       true /* is_fctl */, (char *)&fsctl_buf,
>                         sizeof(struct file_zero_data_information), NULL, NULL);
>         free_xid(xid);
>         return rc;
> @@ -1762,8 +1754,7 @@ static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
>
>         rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
>                         cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
> -                       true /* is_fctl */, false /* use_ipc */,
> -                       (char *)&fsctl_buf,
> +                       true /* is_fctl */, (char *)&fsctl_buf,
>                         sizeof(struct file_zero_data_information), NULL, NULL);
>         free_xid(xid);
>         return rc;
> diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
> index 2943adc754e4..17b7f3aed195 100644
> --- a/fs/cifs/smb2pdu.c
> +++ b/fs/cifs/smb2pdu.c
> @@ -680,7 +680,6 @@ int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
>
>         rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
>                 FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */,
> -               false /* use_ipc */,
>                 (char *)&vneg_inbuf, sizeof(struct validate_negotiate_info_req),
>                 (char **)&pneg_rsp, &rsplen);
>
> @@ -1841,7 +1840,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
>   */
>  int
>  SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
> -          u64 volatile_fid, u32 opcode, bool is_fsctl, bool use_ipc,
> +          u64 volatile_fid, u32 opcode, bool is_fsctl,
>            char *in_data, u32 indatalen,
>            char **out_data, u32 *plen /* returned data len */)
>  {
> @@ -2006,7 +2005,6 @@ SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
>
>         rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
>                         FSCTL_SET_COMPRESSION, true /* is_fsctl */,
> -                       false /* use_ipc */,
>                         (char *)&fsctl_input /* data input */,
>                         2 /* in data len */, &ret_data /* out data */, NULL);
>
> diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
> index e9ab5227e7a8..05287b01f596 100644
> --- a/fs/cifs/smb2proto.h
> +++ b/fs/cifs/smb2proto.h
> @@ -125,8 +125,7 @@ extern int SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms,
>                      struct smb2_err_rsp **err_buf);
>  extern int SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon,
>                      u64 persistent_fid, u64 volatile_fid, u32 opcode,
> -                    bool is_fsctl, bool use_ipc,
> -                    char *in_data, u32 indatalen,
> +                    bool is_fsctl, char *in_data, u32 indatalen,
>                      char **out_data, u32 *plen /* returned data len */);
>  extern int SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
>                       u64 persistent_file_id, u64 volatile_file_id);
> --
> 2.12.3
>
> --
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> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>

--
Best regards,
Pavel Shilovsky

--
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the body of a message to majordomo@vger.kernel.org
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Patch

diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
index b4b1f0305f29..12af5dba742b 100644
--- a/fs/cifs/smb2file.c
+++ b/fs/cifs/smb2file.c
@@ -74,7 +74,7 @@  smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
 		nr_ioctl_req.Reserved = 0;
 		rc = SMB2_ioctl(xid, oparms->tcon, fid->persistent_fid,
 			fid->volatile_fid, FSCTL_LMR_REQUEST_RESILIENCY,
-			true /* is_fsctl */, false /* use_ipc */,
+			true /* is_fsctl */,
 			(char *)&nr_ioctl_req, sizeof(nr_ioctl_req),
 			NULL, NULL /* no return info */);
 		if (rc == -EOPNOTSUPP) {
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index e3393ff5d458..eb68e2fcc500 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -293,7 +293,6 @@  SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
 
 	rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
 			FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
-			false /* use_ipc */,
 			NULL /* no data input */, 0 /* no data input */,
 			(char **)&out_buf, &ret_data_len);
 	if (rc != 0)
@@ -792,7 +791,6 @@  SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
 
 	rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
 			FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
-			false /* use_ipc */,
 			NULL, 0 /* no input */,
 			(char **)&res_key, &ret_data_len);
 
@@ -858,8 +856,7 @@  smb2_copychunk_range(const unsigned int xid,
 		/* Request server copy to target from src identified by key */
 		rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
 			trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
-			true /* is_fsctl */, false /* use_ipc */,
-			(char *)pcchunk,
+			true /* is_fsctl */, (char *)pcchunk,
 			sizeof(struct copychunk_ioctl),	(char **)&retbuf,
 			&ret_data_len);
 		if (rc == 0) {
@@ -1020,7 +1017,7 @@  static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,
 
 	rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
 			cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
-			true /* is_fctl */, false /* use_ipc */,
+			true /* is_fctl */,
 			&setsparse, 1, NULL, NULL);
 	if (rc) {
 		tcon->broken_sparse_sup = true;
@@ -1091,7 +1088,7 @@  smb2_duplicate_extents(const unsigned int xid,
 	rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
 			trgtfile->fid.volatile_fid,
 			FSCTL_DUPLICATE_EXTENTS_TO_FILE,
-			true /* is_fsctl */, false /* use_ipc */,
+			true /* is_fsctl */,
 			(char *)&dup_ext_buf,
 			sizeof(struct duplicate_extents_to_file),
 			NULL,
@@ -1126,7 +1123,7 @@  smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
 	return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
 			cfile->fid.volatile_fid,
 			FSCTL_SET_INTEGRITY_INFORMATION,
-			true /* is_fsctl */, false /* use_ipc */,
+			true /* is_fsctl */,
 			(char *)&integr_info,
 			sizeof(struct fsctl_set_integrity_information_req),
 			NULL,
@@ -1146,7 +1143,7 @@  smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
 	rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
 			cfile->fid.volatile_fid,
 			FSCTL_SRV_ENUMERATE_SNAPSHOTS,
-			true /* is_fsctl */, false /* use_ipc */,
+			true /* is_fsctl */,
 			NULL, 0 /* no input data */,
 			(char **)&retbuf,
 			&ret_data_len);
@@ -1365,16 +1362,20 @@  smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
 	cifs_dbg(FYI, "smb2_get_dfs_refer path <%s>\n", search_name);
 
 	/*
-	 * Use any tcon from the current session. Here, the first one.
+	 * Try to use the IPC tcon, otherwise just use any
 	 */
-	spin_lock(&cifs_tcp_ses_lock);
-	tcon = list_first_entry_or_null(&ses->tcon_list, struct cifs_tcon,
-					tcon_list);
-	if (tcon)
-		tcon->tc_count++;
-	spin_unlock(&cifs_tcp_ses_lock);
+	tcon = ses->tcon_ipc;
+	if (tcon == NULL) {
+		spin_lock(&cifs_tcp_ses_lock);
+		tcon = list_first_entry_or_null(&ses->tcon_list,
+						struct cifs_tcon,
+						tcon_list);
+		if (tcon)
+			tcon->tc_count++;
+		spin_unlock(&cifs_tcp_ses_lock);
+	}
 
-	if (!tcon) {
+	if (tcon == NULL) {
 		cifs_dbg(VFS, "session %p has no tcon available for a dfs referral request\n",
 			 ses);
 		rc = -ENOTCONN;
@@ -1403,20 +1404,11 @@  smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
 	memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
 
 	do {
-		/* try first with IPC */
 		rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
 				FSCTL_DFS_GET_REFERRALS,
-				true /* is_fsctl */, true /* use_ipc */,
+				true /* is_fsctl */,
 				(char *)dfs_req, dfs_req_size,
 				(char **)&dfs_rsp, &dfs_rsp_size);
-		if (rc == -ENOTCONN) {
-			/* try with normal tcon */
-			rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
-					FSCTL_DFS_GET_REFERRALS,
-					true /* is_fsctl */, false /*use_ipc*/,
-					(char *)dfs_req, dfs_req_size,
-					(char **)&dfs_rsp, &dfs_rsp_size);
-		}
 	} while (rc == -EAGAIN);
 
 	if (rc) {
@@ -1435,7 +1427,8 @@  smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
 	}
 
  out:
-	if (tcon) {
+	if (tcon && !tcon->ipc) {
+		/* ipc tcons are not refcounted */
 		spin_lock(&cifs_tcp_ses_lock);
 		tcon->tc_count--;
 		spin_unlock(&cifs_tcp_ses_lock);
@@ -1727,8 +1720,7 @@  static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
 
 	rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
 			cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
-			true /* is_fctl */, false /* use_ipc */,
-			(char *)&fsctl_buf,
+			true /* is_fctl */, (char *)&fsctl_buf,
 			sizeof(struct file_zero_data_information), NULL, NULL);
 	free_xid(xid);
 	return rc;
@@ -1762,8 +1754,7 @@  static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
 
 	rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
 			cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
-			true /* is_fctl */, false /* use_ipc */,
-			(char *)&fsctl_buf,
+			true /* is_fctl */, (char *)&fsctl_buf,
 			sizeof(struct file_zero_data_information), NULL, NULL);
 	free_xid(xid);
 	return rc;
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 2943adc754e4..17b7f3aed195 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -680,7 +680,6 @@  int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
 
 	rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
 		FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */,
-		false /* use_ipc */,
 		(char *)&vneg_inbuf, sizeof(struct validate_negotiate_info_req),
 		(char **)&pneg_rsp, &rsplen);
 
@@ -1841,7 +1840,7 @@  SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
  */
 int
 SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
-	   u64 volatile_fid, u32 opcode, bool is_fsctl, bool use_ipc,
+	   u64 volatile_fid, u32 opcode, bool is_fsctl,
 	   char *in_data, u32 indatalen,
 	   char **out_data, u32 *plen /* returned data len */)
 {
@@ -2006,7 +2005,6 @@  SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
 
 	rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
 			FSCTL_SET_COMPRESSION, true /* is_fsctl */,
-			false /* use_ipc */,
 			(char *)&fsctl_input /* data input */,
 			2 /* in data len */, &ret_data /* out data */, NULL);
 
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index e9ab5227e7a8..05287b01f596 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -125,8 +125,7 @@  extern int SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms,
 		     struct smb2_err_rsp **err_buf);
 extern int SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon,
 		     u64 persistent_fid, u64 volatile_fid, u32 opcode,
-		     bool is_fsctl, bool use_ipc,
-		     char *in_data, u32 indatalen,
+		     bool is_fsctl, char *in_data, u32 indatalen,
 		     char **out_data, u32 *plen /* returned data len */);
 extern int SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
 		      u64 persistent_file_id, u64 volatile_file_id);