ksmbd: disconnect on SMB3 decryption failure

MS-SMB2 requires the server to disconnect a connection when an
encrypted transform cannot be associated with a session or fails
authenticated decryption. This includes an encrypted request that
still carries a SessionId invalidated through PreviousSessionId.

Move the connection to EXITING and shut down its transport when
decrypt_req() fails. Add the missing TCP shutdown callback so a receive
blocked in kernel_recvmsg() is released; SMB Direct already provides
the corresponding callback.

Plaintext requests using an invalidated SessionId do not take this
path and continue to receive STATUS_USER_SESSION_DELETED.

Fixes: e2f34481b24d ("cifsd: add server-side procedures for SMB3")
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

0 files changed, 0 insertions, 0 deletions