CIFS: Add capability to send SMB2 negotiate message

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / cifs / smb2misc.c

diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index d4226782ec88dcb0d045674f8c7e5f0c9619080f..e4dede4ae0588aef17cbc6ff39a71b64ebf27299 100644 (file)
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -199,7 +199,7 @@ static const bool has_smb2_data_area[NUMBER_OF_SMB2_COMMANDS] = {
  * Returns the pointer to the beginning of the data area. Length of the data
  * area and the offset to it (from the beginning of the smb are also returned.
  */
-static char *
+char *
 smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr)
 {
        *off = 0;
@@ -218,6 +218,11 @@ smb2_get_data_area_len(int *off, int *len, struct smb2_hdr *hdr)
         */
        switch (hdr->Command) {
        case SMB2_NEGOTIATE:
+               *off = le16_to_cpu(
+                   ((struct smb2_negotiate_rsp *)hdr)->SecurityBufferOffset);
+               *len = le16_to_cpu(
+                   ((struct smb2_negotiate_rsp *)hdr)->SecurityBufferLength);
+               break;
        case SMB2_SESSION_SETUP:
        case SMB2_CREATE:
        case SMB2_READ: