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Thread-Topic: [PATCH v9 08/10] migration: Implement MigrateChannelList to qmp migration flow. 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envelope-from=het.gala@nutanix.com; helo=mx0b-002c1b01.pphosted.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Integrate MigrateChannelList with all transport backends (socket, exec and rdma) for both src and dest migration endpoints for qmp migration. For current series, limit the size of MigrateChannelList to single element (single interface) as runtime check. Suggested-by: Aravind Retnakaran Signed-off-by: Het Gala --- migration/migration.c | 77 ++++++++++++++++++++++++++++--------------- 1 file changed, 50 insertions(+), 27 deletions(-) diff --git a/migration/migration.c b/migration/migration.c index 6e0a8beaf2..acf80b3590 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -426,9 +426,10 @@ void migrate_add_address(SocketAddress *address) } static bool migrate_uri_parse(const char *uri, - MigrationAddress **channel, + MigrationChannel **channel, Error **errp) { + g_autoptr(MigrationChannel) val = g_new0(MigrationChannel, 1); g_autoptr(MigrationAddress) addr = g_new0(MigrationAddress, 1); SocketAddress *saddr = &addr->u.socket; InetSocketAddress *isock = &addr->u.rdma; @@ -465,7 +466,9 @@ static bool migrate_uri_parse(const char *uri, return false; } - *channel = addr; + val->channel_type = MIGRATION_CHANNEL_TYPE_MAIN; + val->addr = addr; + *channel = val; return true; } @@ -473,7 +476,8 @@ static void qemu_start_incoming_migration(const char *uri, bool has_channels, MigrationChannelList *channels, Error **errp) { - g_autoptr(MigrationAddress) channel = g_new0(MigrationAddress, 1); + g_autoptr(MigrationChannel) channel = g_new0(MigrationChannel, 1); + g_autoptr(MigrationAddress) addr = g_new0(MigrationAddress, 1); /* * Having preliminary checks for uri and channel @@ -483,20 +487,29 @@ static void qemu_start_incoming_migration(const char *uri, bool has_channels, "exclusive; exactly one of the two should be present in " "'migrate-incoming' qmp command "); return; + } else if (channels) { + /* To verify that Migrate channel list has only item */ + if (channels->next) { + error_setg(errp, "Channel list has more than one entries"); + return; + } + channel = channels->value; + } else { + /* caller uses the old URI syntax */ + if (uri && !migrate_uri_parse(uri, &channel, errp)) { + return; + } } - - if (uri && !migrate_uri_parse(uri, &channel, errp)) { - return; - } + addr = channel->addr; /* transport mechanism not suitable for migration? */ - if (!migration_channels_and_transport_compatible(channel, errp)) { + if (!migration_channels_and_transport_compatible(addr, errp)) { return; } qapi_event_send_migration(MIGRATION_STATUS_SETUP); - if (channel->transport == MIGRATION_ADDRESS_TYPE_SOCKET) { - SocketAddress *saddr = &channel->u.socket; + if (addr->transport == MIGRATION_ADDRESS_TYPE_SOCKET) { + SocketAddress *saddr = &addr->u.socket; if (saddr->type == SOCKET_ADDRESS_TYPE_INET || saddr->type == SOCKET_ADDRESS_TYPE_UNIX || saddr->type == SOCKET_ADDRESS_TYPE_VSOCK) { @@ -505,11 +518,11 @@ static void qemu_start_incoming_migration(const char *uri, bool has_channels, fd_start_incoming_migration(saddr->u.fd.str, errp); } #ifdef CONFIG_RDMA - } else if (channel->transport == MIGRATION_ADDRESS_TYPE_RDMA) { - rdma_start_incoming_migration(&channel->u.rdma, errp); -#endif - } else if (channel->transport == MIGRATION_ADDRESS_TYPE_EXEC) { - exec_start_incoming_migration(channel->u.exec.args, errp); + } else if (addr->transport == MIGRATION_ADDRESS_TYPE_RDMA) { + rdma_start_incoming_migration(&addr->u.rdma, errp); + #endif + } else if (addr->transport == MIGRATION_ADDRESS_TYPE_EXEC) { + exec_start_incoming_migration(addr->u.exec.args, errp); } else { error_setg(errp, "unknown migration protocol: %s", uri); } @@ -1709,7 +1722,8 @@ void qmp_migrate(const char *uri, bool has_channels, bool resume_requested; Error *local_err = NULL; MigrationState *s = migrate_get_current(); - g_autoptr(MigrationAddress) channel = g_new0(MigrationAddress, 1); + g_autoptr(MigrationChannel) channel = g_new0(MigrationChannel, 1); + g_autoptr(MigrationAddress) addr = g_new0(MigrationAddress, 1); /* * Having preliminary checks for uri and channel @@ -1719,14 +1733,23 @@ void qmp_migrate(const char *uri, bool has_channels, "exclusive; exactly one of the two should be present in " "'migrate' qmp command "); return; + } else if (channels) { + /* To verify that Migrate channel list has only item */ + if (channels->next) { + error_setg(errp, "Channel list has more than one entries"); + return; + } + channel = channels->value; + } else { + /* caller uses the old URI syntax */ + if (uri && !migrate_uri_parse(uri, &channel, errp)) { + return; + } } - - if (!migrate_uri_parse(uri, &channel, errp)) { - return; - } + addr = channel->addr; /* transport mechanism not suitable for migration? */ - if (!migration_channels_and_transport_compatible(channel, errp)) { + if (!migration_channels_and_transport_compatible(addr, errp)) { return; } @@ -1743,8 +1766,8 @@ void qmp_migrate(const char *uri, bool has_channels, } } - if (channel->transport == MIGRATION_ADDRESS_TYPE_SOCKET) { - SocketAddress *saddr = &channel->u.socket; + if (addr->transport == MIGRATION_ADDRESS_TYPE_SOCKET) { + SocketAddress *saddr = &addr->u.socket; if (saddr->type == SOCKET_ADDRESS_TYPE_INET || saddr->type == SOCKET_ADDRESS_TYPE_UNIX || saddr->type == SOCKET_ADDRESS_TYPE_VSOCK) { @@ -1753,11 +1776,11 @@ void qmp_migrate(const char *uri, bool has_channels, fd_start_outgoing_migration(s, saddr->u.fd.str, &local_err); } #ifdef CONFIG_RDMA - } else if (channel->transport == MIGRATION_ADDRESS_TYPE_RDMA) { - rdma_start_outgoing_migration(s, &channel->u.rdma, &local_err); + } else if (addr->transport == MIGRATION_ADDRESS_TYPE_RDMA) { + rdma_start_outgoing_migration(s, &addr->u.rdma, &local_err); #endif - } else if (channel->transport == MIGRATION_ADDRESS_TYPE_EXEC) { - exec_start_outgoing_migration(s, channel->u.exec.args, &local_err); + } else if (addr->transport == MIGRATION_ADDRESS_TYPE_EXEC) { + exec_start_outgoing_migration(s, addr->u.exec.args, &local_err); } else { if (!resume_requested) { yank_unregister_instance(MIGRATION_YANK_INSTANCE);