qemu/migration/multifd.h

4  * Copyright (c) 2019-2020 Red Hat Inc
10  * See the COPYING file in the top-level directory.
65     uint32_t unused32[1];    /* Reserved for future use */
66     uint64_t unused64[3];    /* Reserved for future use */
70      *  - normal pages (initial normal_pages entries)
71      *  - zero pages (following zero_pages entries)
109     return data->type == MULTIFD_PAYLOAD_NONE;  in multifd_payload_empty()
115     data->type = type;  in multifd_set_payload_type()
122     /* channel number */
124     /* channel thread name */
126     /* channel thread id */
131     /* communication channel */
164     /* packets sent through this channel */
178     /* channel number */
180     /* channel thread name */
182     /* channel thread id */
185     /* communication channel */
212     /* packets received through this channel */
228     /* used for de-compression methods */
239      * Setup for sending side. Called once per channel during channel
242      * Must allocate p->iov. If packets are in use (default), one
246      * p->write_flags may be used for passing flags to the QIOChannel.
248      * p->compression_data may be used by compression methods to store
254      * Cleanup for sending side. Called once per channel during
255      * channel cleanup phase.
262      * a channel that is currently idle.
264      * Must populate p->iov with the data to be sent, increment
265      * p->iovs_num to match the amount of iovecs used and set
266      * p->next_packet_size with the amount of data currently present
267      * in p->iov.
270      * p->flags.
272      * As a last step, if packets are in use (default), must prepare
283      * Setup for receiving side. Called once per channel during
284      * channel setup phase. May be empty.
286      * May allocate data structures for the receiving of data. May use
287      * p->iov. Compression methods may use p->compress_data.
292      * Cleanup for receiving side. Called once per channel during
293      * channel cleanup phase. May be empty.
300      * channel that is currently idle. Only called if there is data
303      * Must validate p->flags according to what was set at
306      * Must read the data from the QIOChannel p->c.
319     p->iov[0].iov_len = p->packet_len;  in multifd_send_prepare_header()
320     p->iov[0].iov_base = p->packet;  in multifd_send_prepare_header()
321     p->iovs_num++;  in multifd_send_prepare_header()