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 #ifndef QEMU_MIGRATION_RDMA_H 18 #define QEMU_MIGRATION_RDMA_H 19 20 #include "exec/memory.h" 21 22 void rdma_start_outgoing_migration(void *opaque, const char *host_port, 23 Error **errp); 24 25 void rdma_start_incoming_migration(const char *host_port, Error **errp); 26 27 /* 28 * Constants used by rdma return codes 29 */ 30 #define RAM_CONTROL_SETUP 0 31 #define RAM_CONTROL_ROUND 1 32 #define RAM_CONTROL_FINISH 3 33 34 /* 35 * Whenever this is found in the data stream, the flags 36 * will be passed to rdma functions in the incoming-migration 37 * side. 38 */ 39 #define RAM_SAVE_FLAG_HOOK 0x80 40 41 #define RAM_SAVE_CONTROL_NOT_SUPP -1000 42 #define RAM_SAVE_CONTROL_DELAYED -2000 43 44 #ifdef CONFIG_RDMA 45 int rdma_registration_handle(QEMUFile *f); 46 int rdma_registration_start(QEMUFile *f, uint64_t flags); 47 int rdma_registration_stop(QEMUFile *f, uint64_t flags); 48 int rdma_block_notification_handle(QEMUFile *f, const char *name); 49 int rdma_control_save_page(QEMUFile *f, ram_addr_t block_offset, 50 ram_addr_t offset, size_t size); 51 #else 52 static inline 53 int rdma_registration_handle(QEMUFile *f) { return 0; } 54 static inline 55 int rdma_registration_start(QEMUFile *f, uint64_t flags) { return 0; } 56 static inline 57 int rdma_registration_stop(QEMUFile *f, uint64_t flags) { return 0; } 58 static inline 59 int rdma_block_notification_handle(QEMUFile *f, const char *name) { return 0; } 60 static inline 61 int rdma_control_save_page(QEMUFile *f, ram_addr_t block_offset, 62 ram_addr_t offset, size_t size) 63 { 64 return RAM_SAVE_CONTROL_NOT_SUPP; 65 } 66 #endif 67 #endif 68