diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/slirp.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/net/slirp.c b/net/slirp.c index a8fd9e6364..059b2d9b08 100644 --- a/net/slirp.c +++ b/net/slirp.c @@ -44,6 +44,8 @@ #include "qapi/error.h" #include "qapi/qmp/qdict.h" #include "util.h" +#include "migration/register.h" +#include "migration/qemu-file-types.h" static int get_str_sep(char *buf, int buf_size, const char **pp, int sep) { @@ -146,6 +148,7 @@ static void net_slirp_cleanup(NetClientState *nc) g_slist_free_full(s->fwd, slirp_free_fwd); main_loop_poll_remove_notifier(&s->poll_notifier); + unregister_savevm(NULL, "slirp", s->slirp); slirp_cleanup(s->slirp); if (s->exit_notifier.notify) { qemu_remove_exit_notifier(&s->exit_notifier); @@ -303,6 +306,46 @@ static void net_slirp_poll_notify(Notifier *notifier, void *data) } } +static ssize_t +net_slirp_stream_read(void *buf, size_t size, void *opaque) +{ + QEMUFile *f = opaque; + + return qemu_get_buffer(f, buf, size); +} + +static ssize_t +net_slirp_stream_write(const void *buf, size_t size, void *opaque) +{ + QEMUFile *f = opaque; + + qemu_put_buffer(f, buf, size); + if (qemu_file_get_error(f)) { + return -1; + } + + return size; +} + +static int net_slirp_state_load(QEMUFile *f, void *opaque, int version_id) +{ + Slirp *slirp = opaque; + + return slirp_state_load(slirp, version_id, net_slirp_stream_read, f); +} + +static void net_slirp_state_save(QEMUFile *f, void *opaque) +{ + Slirp *slirp = opaque; + + slirp_state_save(slirp, net_slirp_stream_write, f); +} + +static SaveVMHandlers savevm_slirp_state = { + .save_state = net_slirp_state_save, + .load_state = net_slirp_state_load, +}; + static int net_slirp_init(NetClientState *peer, const char *model, const char *name, int restricted, bool ipv4, const char *vnetwork, const char *vhost, @@ -523,6 +566,18 @@ static int net_slirp_init(NetClientState *peer, const char *model, &slirp_cb, s); QTAILQ_INSERT_TAIL(&slirp_stacks, s, entry); + /* + * Make sure the current bitstream version of slirp is 4, to avoid + * QEMU migration incompatibilities, if upstream slirp bumped the + * version. + * + * FIXME: use bitfields of features? teach libslirp to save with + * specific version? + */ + g_assert(slirp_state_version() == 4); + register_savevm_live(NULL, "slirp", 0, slirp_state_version(), + &savevm_slirp_state, s->slirp); + s->poll_notifier.notify = net_slirp_poll_notify; main_loop_poll_add_notifier(&s->poll_notifier); |