1 /* 2 * RDMA protocol and interfaces 3 * 4 * Copyright IBM, Corp. 2010-2013 5 * Copyright Red Hat, Inc. 2015-2016 6 * 7 * Authors: 8 * Michael R. Hines <mrhines@us.ibm.com> 9 * Jiuxing Liu <jl@us.ibm.com> 10 * Daniel P. Berrange <berrange@redhat.com> 11 * 12 * This work is licensed under the terms of the GNU GPL, version 2 or 13 * later. See the COPYING file in the top-level directory. 14 * 15 */ 16 17 #include "qemu/sockets.h" 18 19 #ifndef QEMU_MIGRATION_RDMA_H 20 #define QEMU_MIGRATION_RDMA_H 21 22 #include "exec/memory.h" 23 24 void rdma_start_outgoing_migration(void *opaque, InetSocketAddress *host_port, 25 Error **errp); 26 27 void rdma_start_incoming_migration(InetSocketAddress *host_port, Error **errp); 28 29 /* 30 * Constants used by rdma return codes 31 */ 32 #define RAM_CONTROL_SETUP 0 33 #define RAM_CONTROL_ROUND 1 34 #define RAM_CONTROL_FINISH 3 35 36 /* 37 * Whenever this is found in the data stream, the flags 38 * will be passed to rdma functions in the incoming-migration 39 * side. 40 */ 41 #define RAM_SAVE_FLAG_HOOK 0x80 42 43 #define RAM_SAVE_CONTROL_NOT_SUPP -1000 44 #define RAM_SAVE_CONTROL_DELAYED -2000 45 46 #ifdef CONFIG_RDMA 47 int rdma_registration_handle(QEMUFile *f); 48 int rdma_registration_start(QEMUFile *f, uint64_t flags); 49 int rdma_registration_stop(QEMUFile *f, uint64_t flags); 50 int rdma_block_notification_handle(QEMUFile *f, const char *name); 51 int rdma_control_save_page(QEMUFile *f, ram_addr_t block_offset, 52 ram_addr_t offset, size_t size); 53 #else 54 static inline 55 int rdma_registration_handle(QEMUFile *f) { return 0; } 56 static inline 57 int rdma_registration_start(QEMUFile *f, uint64_t flags) { return 0; } 58 static inline 59 int rdma_registration_stop(QEMUFile *f, uint64_t flags) { return 0; } 60 static inline 61 int rdma_block_notification_handle(QEMUFile *f, const char *name) { return 0; } 62 static inline 63 int rdma_control_save_page(QEMUFile *f, ram_addr_t block_offset, 64 ram_addr_t offset, size_t size) 65 { 66 return RAM_SAVE_CONTROL_NOT_SUPP; 67 } 68 #endif 69 #endif 70