Merge remote-tracking branch 'remotes/amit-migration/tags/migration-2.7-2' into staging

migration: add TLS support to the migration data channel

This is a big refactoring of the migration backend code - moving away from
QEMUFile to the new QIOChannel framework introduced here.  This brings a
good level of abstraction and reduction of many lines of code.

This series also adds the ability for many backends (all except RDMA) to
use TLS for encrypting the migration data between the endpoints.

# gpg: Signature made Thu 26 May 2016 07:07:08 BST using RSA key ID 657EF670
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg:                 aka "Amit Shah <amit@kernel.org>"
# gpg:                 aka "Amit Shah <amitshah@gmx.net>"

* remotes/amit-migration/tags/migration-2.7-2: (28 commits)
  migration: remove qemu_get_fd method from QEMUFile
  migration: remove support for non-iovec based write handlers
  migration: add support for encrypting data with TLS
  migration: define 'tls-creds' and 'tls-hostname' migration parameters
  migration: don't use an array for storing migrate parameters
  migration: move definition of struct QEMUFile back into qemu-file.c
  migration: delete QEMUFile stdio implementation
  migration: delete QEMUFile sockets implementation
  migration: delete QEMUSizedBuffer struct
  migration: delete QEMUFile buffer implementation
  migration: convert savevm to use QIOChannel for writing to files
  migration: convert RDMA to use QIOChannel interface
  migration: convert exec socket protocol to use QIOChannel
  migration: convert fd socket protocol to use QIOChannel
  migration: convert tcp socket protocol to use QIOChannel
  migration: rename unix.c to socket.c
  migration: convert unix socket protocol to use QIOChannel
  migration: convert post-copy to use QIOChannelBuffer
  migration: add reporting of errors for outgoing migration
  migration: add helpers for creating QEMUFile from a QIOChannel
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 24 insertions, 1 deletions

diff --git a/trace-events b/trace-events
index 4450d8f..767fd04 100644
--- a/trace-events
+++ b/trace-events
@@ -1483,7 +1483,7 @@ await_return_path_close_on_source_close(void) ""
 await_return_path_close_on_source_joining(void) ""
 migrate_set_state(int new_state) "new state %d"
 migrate_fd_cleanup(void) ""
-migrate_fd_error(void) ""
+migrate_fd_error(const char *error_desc) "error=%s"
 migrate_fd_cancel(void) ""
 migrate_handle_rp_req_pages(const char *rbname, size_t start, size_t len) "in %s at %zx len %zx"
 migrate_pending(uint64_t size, uint64_t max, uint64_t post, uint64_t nonpost) "pending size %" PRIu64 " max %" PRIu64 " (post=%" PRIu64 " nonpost=%" PRIu64 ")"
@@ -1513,6 +1513,8 @@ migrate_state_too_big(void) ""
 migrate_transferred(uint64_t tranferred, uint64_t time_spent, double bandwidth, uint64_t size) "transferred %" PRIu64 " time_spent %" PRIu64 " bandwidth %g max_size %" PRId64
 process_incoming_migration_co_end(int ret, int ps) "ret=%d postcopy-state=%d"
 process_incoming_migration_co_postcopy_end_main(void) ""
+migration_set_incoming_channel(void *ioc, const char *ioctype) "ioc=%p ioctype=%s"
+migration_set_outgoing_channel(void *ioc, const char *ioctype, const char *hostname)  "ioc=%p ioctype=%s hostname=%s"
 
 # migration/rdma.c
 qemu_rdma_accept_incoming_migration(void) ""
@@ -1597,6 +1599,27 @@ postcopy_ram_incoming_cleanup_entry(void) ""
 postcopy_ram_incoming_cleanup_exit(void) ""
 postcopy_ram_incoming_cleanup_join(void) ""
 
+# migration/exec.c
+migration_exec_outgoing(const char *cmd) "cmd=%s"
+migration_exec_incoming(const char *cmd) "cmd=%s"
+
+# migration/fd.c
+migration_fd_outgoing(int fd) "fd=%d"
+migration_fd_incoming(int fd) "fd=%d"
+
+# migration/socket.c
+migration_socket_incoming_accepted(void) ""
+migration_socket_outgoing_connected(const char *hostname) "hostname=%s"
+migration_socket_outgoing_error(const char *err) "error=%s"
+
+# migration/tls.c
+migration_tls_outgoing_handshake_start(const char *hostname) "hostname=%s"
+migration_tls_outgoing_handshake_error(const char *err) "err=%s"
+migration_tls_outgoing_handshake_complete(void) ""
+migration_tls_incoming_handshake_start(void) ""
+migration_tls_incoming_handshake_error(const char *err) "err=%s"
+migration_tls_incoming_handshake_complete(void) ""
+
 # kvm-all.c
 kvm_ioctl(int type, void *arg) "type 0x%x, arg %p"
 kvm_vm_ioctl(int type, void *arg) "type 0x%x, arg %p"