From 3fa9642ff7d51f7fc3ba68e6ccd13a939d5bd609 Mon Sep 17 00:00:00 2001 From: Het Gala Date: Mon, 23 Oct 2023 15:20:45 -0300 Subject: [PATCH] migration: convert rdma backend to accept MigrateAddress MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RDMA based transport backend for 'migrate'/'migrate-incoming' QAPIs accept new wire protocol of MigrateAddress struct. It is achived by parsing 'uri' string and storing migration parameters required for RDMA connection into well defined InetSocketAddress struct. Suggested-by: Aravind Retnakaran Signed-off-by: Het Gala Reviewed-by: Daniel P. Berrangé Signed-off-by: Fabiano Rosas Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela Message-ID: <20231023182053.8711-7-farosas@suse.de> --- migration/migration.c | 8 ++++---- migration/rdma.c | 33 +++++++++++---------------------- migration/rdma.h | 6 ++++-- 3 files changed, 19 insertions(+), 28 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index 846877135a..8c26672630 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -534,7 +534,7 @@ static void qemu_start_incoming_migration(const char *uri, Error **errp) fd_start_incoming_migration(saddr->u.fd.str, errp); } #ifdef CONFIG_RDMA - } else if (strstart(uri, "rdma:", &p)) { + } else if (channel->transport == MIGRATION_ADDRESS_TYPE_RDMA) { if (migrate_compress()) { error_setg(errp, "RDMA and compression can't be used together"); return; @@ -547,7 +547,7 @@ static void qemu_start_incoming_migration(const char *uri, Error **errp) error_setg(errp, "RDMA and multifd can't be used together"); return; } - rdma_start_incoming_migration(p, errp); + rdma_start_incoming_migration(&channel->u.rdma, errp); #endif } else if (strstart(uri, "exec:", &p)) { exec_start_incoming_migration(p, errp); @@ -1935,8 +1935,8 @@ void qmp_migrate(const char *uri, bool has_blk, bool blk, fd_start_outgoing_migration(s, saddr->u.fd.str, &local_err); } #ifdef CONFIG_RDMA - } else if (strstart(uri, "rdma:", &p)) { - rdma_start_outgoing_migration(s, p, &local_err); + } else if (channel->transport == MIGRATION_ADDRESS_TYPE_RDMA) { + rdma_start_outgoing_migration(s, &channel->u.rdma, &local_err); #endif } else if (strstart(uri, "exec:", &p)) { exec_start_outgoing_migration(s, p, &local_err); diff --git a/migration/rdma.c b/migration/rdma.c index 2938db4f64..6a29e53daf 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -289,7 +289,6 @@ typedef struct RDMALocalBlocks { typedef struct RDMAContext { char *host; int port; - char *host_port; RDMAWorkRequestData wr_data[RDMA_WRID_MAX]; @@ -2431,9 +2430,7 @@ static void qemu_rdma_cleanup(RDMAContext *rdma) rdma->channel = NULL; } g_free(rdma->host); - g_free(rdma->host_port); rdma->host = NULL; - rdma->host_port = NULL; } @@ -2723,28 +2720,16 @@ static void qemu_rdma_return_path_dest_init(RDMAContext *rdma_return_path, rdma_return_path->is_return_path = true; } -static RDMAContext *qemu_rdma_data_init(const char *host_port, Error **errp) +static RDMAContext *qemu_rdma_data_init(InetSocketAddress *saddr, Error **errp) { RDMAContext *rdma = NULL; - InetSocketAddress *addr; rdma = g_new0(RDMAContext, 1); rdma->current_index = -1; rdma->current_chunk = -1; - addr = g_new(InetSocketAddress, 1); - if (!inet_parse(addr, host_port, NULL)) { - rdma->port = atoi(addr->port); - rdma->host = g_strdup(addr->host); - rdma->host_port = g_strdup(host_port); - } else { - error_setg(errp, "RDMA ERROR: bad RDMA migration address '%s'", - host_port); - g_free(rdma); - rdma = NULL; - } - - qapi_free_InetSocketAddress(addr); + rdma->host = g_strdup(saddr->host); + rdma->port = atoi(saddr->port); return rdma; } @@ -3353,6 +3338,7 @@ static int qemu_rdma_accept(RDMAContext *rdma) .private_data_len = sizeof(cap), }; RDMAContext *rdma_return_path = NULL; + g_autoptr(InetSocketAddress) isock = g_new0(InetSocketAddress, 1); struct rdma_cm_event *cm_event; struct ibv_context *verbs; int ret; @@ -3367,13 +3353,16 @@ static int qemu_rdma_accept(RDMAContext *rdma) goto err_rdma_dest_wait; } + isock->host = rdma->host; + isock->port = g_strdup_printf("%d", rdma->port); + /* * initialize the RDMAContext for return path for postcopy after first * connection request reached. */ if ((migrate_postcopy() || migrate_return_path()) && !rdma->is_return_path) { - rdma_return_path = qemu_rdma_data_init(rdma->host_port, NULL); + rdma_return_path = qemu_rdma_data_init(isock, NULL); if (rdma_return_path == NULL) { rdma_ack_cm_event(cm_event); goto err_rdma_dest_wait; @@ -4074,7 +4063,8 @@ static void rdma_accept_incoming_migration(void *opaque) } } -void rdma_start_incoming_migration(const char *host_port, Error **errp) +void rdma_start_incoming_migration(InetSocketAddress *host_port, + Error **errp) { MigrationState *s = migrate_get_current(); int ret; @@ -4118,13 +4108,12 @@ cleanup_rdma: err: if (rdma) { g_free(rdma->host); - g_free(rdma->host_port); } g_free(rdma); } void rdma_start_outgoing_migration(void *opaque, - const char *host_port, Error **errp) + InetSocketAddress *host_port, Error **errp) { MigrationState *s = opaque; RDMAContext *rdma_return_path = NULL; diff --git a/migration/rdma.h b/migration/rdma.h index 30b15b4466..a8d27f33b8 100644 --- a/migration/rdma.h +++ b/migration/rdma.h @@ -14,15 +14,17 @@ * */ +#include "qemu/sockets.h" + #ifndef QEMU_MIGRATION_RDMA_H #define QEMU_MIGRATION_RDMA_H #include "exec/memory.h" -void rdma_start_outgoing_migration(void *opaque, const char *host_port, +void rdma_start_outgoing_migration(void *opaque, InetSocketAddress *host_port, Error **errp); -void rdma_start_incoming_migration(const char *host_port, Error **errp); +void rdma_start_incoming_migration(InetSocketAddress *host_port, Error **errp); /* * Constants used by rdma return codes