Documentation/networking/strparser.rst

1 .. SPDX-License-Identifier: GPL-2.0
11 application layer protocol running over a data stream. The stream
12 parser works in conjunction with an upper layer in the kernel to provide
13 kernel support for application layer messages. For instance, Kernel
47      strparser that is allocated by the upper layer. sk is the TCP
57      and no new messages are delivered to the upper layer.
71      error, and it is called from the upper layer to stop parsing
98     The upper layer calls strp_tcp_data_ready when data is ready on
102     buffer and message timeout is the receive timeout for the socket.
122     in the stream. The upper layer must implement this function. It
124     next application layer message in the stream.
126     The skb->cb in the input skb is a struct strp_msg. Only
127     the offset field is relevant in parse_msg and gives the offset
135     -ESTRPIPE    current message should not be processed by the
146     -ESTRPIPE and the stream parser had previously read some bytes for
179     The skb->cb in the input skb is a struct strp_msg. This
180     struct contains two fields: offset and full_len. Offset is
182     the length of the message. skb->len - offset may be greater
191     sock->ops->read_sock, if provided.
210      to non-NULL in strp_init.
235 buffer size of the associated TCP socket. If the length returned by
236 parse_msg is greater than the socket buffer size then the stream parser