surface/aggregator/ssh_parser.c

93  * sshp_parse_frame() - Parse SSH frame.
96  * @frame: The parsed frame (output).
100  * Parses and validates a SSH frame, including its payload, from the given
101  * source. Sets the provided @frame pointer to the start of the frame and
102  * writes the limits of the frame payload to the provided @payload span
108  * If no complete SSH frame could be found, the frame pointer will be set to
112  * Return: Returns zero on success or if the frame is incomplete, %-ENOMSG if
113  * the start of the message is invalid, %-EBADMSG if any (frame-header or
118 		     struct ssh_frame **frame, struct ssam_span *payload,
125 	*frame = NULL;
130 		dev_warn(dev, "rx: parser: invalid start of frame\n");
136 		dev_dbg(dev, "rx: parser: not enough data for frame\n");
140 	/* Pin down frame. */
144 	/* Validate frame CRC. */
146 		dev_warn(dev, "rx: parser: invalid frame CRC\n");
153 		dev_warn(dev, "rx: parser: frame too large: %llu bytes\n",
161 	/* Check for frame + payload length. */
173 	*frame = (struct ssh_frame *)sf.ptr;
176 	dev_dbg(dev, "rx: parser: valid frame found (type: %#04x, len: %u)\n",
177 		(*frame)->type, (*frame)->len);
183  * sshp_parse_command() - Parse SSH command frame payload.
189  * Parses and validates a SSH command frame payload. Sets the @command pointer
193  * check the frame-payload-type field, which should be checked by the caller
196  * The @source parameter should be the complete frame payload, e.g. returned
199  * This function does not copy any data, but rather only validates the frame
204  * valid command-type frame payload, i.e. is too short.