'\" t
.\"     Title: kcapi_aead_stream_update_last
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: November 2020
.\"    Manual: Programming Interface
.\"    Source: libkcapi Manual 1.2.1
.\"  Language: English
.\"
.TH "KCAPI_AEAD_STREAM_UP" "3" "November 2020" "libkcapi Manual 1\&.2\&.1" "Programming Interface"
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.SH "NAME"
kcapi_aead_stream_update_last \- send last data for processing (stream)
.SH "SYNOPSIS"
.HP \w'int32_t\ kcapi_aead_stream_update_last('u
.BI "int32_t kcapi_aead_stream_update_last(struct\ kcapi_handle\ *\ " "handle" ", struct\ iovec\ *\ " "iov" ", uint32_t\ " "iovlen" ");"
.SH "ARGUMENTS"
.PP
\fIhandle\fR
.RS 4
[in] cipher handle
.RE
.PP
\fIiov\fR
.RS 4
[in] scatter/gather list with data to be processed by the cipher operation\&.
.RE
.PP
\fIiovlen\fR
.RS 4
[in] number of scatter/gather list elements\&.
.RE
.SH "DESCRIPTION"
.PP
Using this function call, more plaintext for encryption or ciphertext for decryption can be submitted to the kernel\&.
.PP
This call is identical to the
\fBkcapi_aead_stream_update\fR
call with the exception that it marks the last data buffer before the cipher operation is triggered\&. Typically, the tag value is provided with this call\&.
.SH "WARNING"
.PP
The memory referenced by
\fIiov\fR
is not accessed by the kernel during this call\&. The memory is first accessed when
\fBkcapi_cipher_stream_op\fR
is called\&. Thus, you MUST make sure that the referenced memory is still present at the time
\fBkcapi_cipher_stream_op\fR
is called\&.
.PP
\fIreturn\fR
number of bytes sent to the kernel upon success; a negative errno\-style error code if an error occurred
.SH "AUTHOR"
.PP
\fBStephan Mueller\fR <\&smueller@chronox.de\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br