X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=spice-qemu-char.c;h=6d147a7ece26a79f6af8838e4d22afd5e3ea6e81;hb=30c367ed446b6ea53245589a5cf373578ac075d7;hp=95bf6b65d15cca5ac7cecffc130571da05a0536f;hpb=a67a47d2b559a7733c3f89aeb2d81b19d2c027e4;p=qemu.git diff --git a/spice-qemu-char.c b/spice-qemu-char.c index 95bf6b65d..6d147a7ec 100644 --- a/spice-qemu-char.c +++ b/spice-qemu-char.c @@ -1,32 +1,32 @@ #include "config-host.h" #include "trace.h" #include "ui/qemu-spice.h" +#include "sysemu/char.h" #include #include +#include -#include "osdep.h" - -#define dprintf(_scd, _level, _fmt, ...) \ - do { \ - static unsigned __dprintf_counter = 0; \ - if (_scd->debug >= _level) { \ - fprintf(stderr, "scd: %3d: " _fmt, ++__dprintf_counter, ## __VA_ARGS__);\ - } \ - } while (0) - -#define VMC_MAX_HOST_WRITE 2048 +#include "qemu/osdep.h" typedef struct SpiceCharDriver { CharDriverState* chr; SpiceCharDeviceInstance sin; char *subtype; bool active; - uint8_t *buffer; - uint8_t *datapos; - ssize_t bufsize, datalen; - uint32_t debug; + bool blocked; + const uint8_t *datapos; + int datalen; + QLIST_ENTRY(SpiceCharDriver) next; } SpiceCharDriver; +typedef struct SpiceCharSource { + GSource source; + SpiceCharDriver *scd; +} SpiceCharSource; + +static QLIST_HEAD(, SpiceCharDriver) spice_chars = + QLIST_HEAD_INITIALIZER(spice_chars); + static int vmc_write(SpiceCharDeviceInstance *sin, const uint8_t *buf, int len) { SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); @@ -35,17 +35,17 @@ static int vmc_write(SpiceCharDeviceInstance *sin, const uint8_t *buf, int len) uint8_t* p = (uint8_t*)buf; while (len > 0) { - last_out = MIN(len, VMC_MAX_HOST_WRITE); - if (qemu_chr_can_read(scd->chr) < last_out) { + int can_write = qemu_chr_be_can_write(scd->chr); + last_out = MIN(len, can_write); + if (last_out <= 0) { break; } - qemu_chr_read(scd->chr, p, last_out); + qemu_chr_be_write(scd->chr, p, last_out); out += last_out; len -= last_out; p += last_out; } - dprintf(scd, 3, "%s: %lu/%zd\n", __func__, out, len + out); trace_spice_vmc_write(out, len + out); return out; } @@ -55,27 +55,63 @@ static int vmc_read(SpiceCharDeviceInstance *sin, uint8_t *buf, int len) SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); int bytes = MIN(len, scd->datalen); - dprintf(scd, 2, "%s: %p %d/%d/%zd\n", __func__, scd->datapos, len, bytes, scd->datalen); if (bytes > 0) { memcpy(buf, scd->datapos, bytes); scd->datapos += bytes; scd->datalen -= bytes; assert(scd->datalen >= 0); - if (scd->datalen == 0) { - scd->datapos = 0; - } + } + if (scd->datalen == 0) { + scd->datapos = 0; + scd->blocked = false; } trace_spice_vmc_read(bytes, len); return bytes; } +#if SPICE_SERVER_VERSION >= 0x000c02 +static void vmc_event(SpiceCharDeviceInstance *sin, uint8_t event) +{ + SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); + int chr_event; + + switch (event) { + case SPICE_PORT_EVENT_BREAK: + chr_event = CHR_EVENT_BREAK; + break; + default: + return; + } + + trace_spice_vmc_event(chr_event); + qemu_chr_be_event(scd->chr, chr_event); +} +#endif + +static void vmc_state(SpiceCharDeviceInstance *sin, int connected) +{ + SpiceCharDriver *scd = container_of(sin, SpiceCharDriver, sin); + + if ((scd->chr->be_open && connected) || + (!scd->chr->be_open && !connected)) { + return; + } + + qemu_chr_be_event(scd->chr, + connected ? CHR_EVENT_OPENED : CHR_EVENT_CLOSED); +} + static SpiceCharDeviceInterface vmc_interface = { .base.type = SPICE_INTERFACE_CHAR_DEVICE, .base.description = "spice virtual channel char device", .base.major_version = SPICE_INTERFACE_CHAR_DEVICE_MAJOR, .base.minor_version = SPICE_INTERFACE_CHAR_DEVICE_MINOR, + .state = vmc_state, .write = vmc_write, .read = vmc_read, +#if SPICE_SERVER_VERSION >= 0x000c02 + .event = vmc_event, +#endif }; @@ -84,7 +120,6 @@ static void vmc_register_interface(SpiceCharDriver *scd) if (scd->active) { return; } - dprintf(scd, 1, "%s\n", __func__); scd->sin.base.sif = &vmc_interface.base; qemu_spice_add_interface(&scd->sin.base); scd->active = true; @@ -96,50 +131,96 @@ static void vmc_unregister_interface(SpiceCharDriver *scd) if (!scd->active) { return; } - dprintf(scd, 1, "%s\n", __func__); spice_server_remove_interface(&scd->sin.base); scd->active = false; trace_spice_vmc_unregister_interface(scd); } +static gboolean spice_char_source_prepare(GSource *source, gint *timeout) +{ + SpiceCharSource *src = (SpiceCharSource *)source; + + *timeout = -1; + + return !src->scd->blocked; +} + +static gboolean spice_char_source_check(GSource *source) +{ + SpiceCharSource *src = (SpiceCharSource *)source; + + return !src->scd->blocked; +} + +static gboolean spice_char_source_dispatch(GSource *source, + GSourceFunc callback, gpointer user_data) +{ + GIOFunc func = (GIOFunc)callback; + + return func(NULL, G_IO_OUT, user_data); +} + +GSourceFuncs SpiceCharSourceFuncs = { + .prepare = spice_char_source_prepare, + .check = spice_char_source_check, + .dispatch = spice_char_source_dispatch, +}; + +static GSource *spice_chr_add_watch(CharDriverState *chr, GIOCondition cond) +{ + SpiceCharDriver *scd = chr->opaque; + SpiceCharSource *src; + + assert(cond == G_IO_OUT); + + src = (SpiceCharSource *)g_source_new(&SpiceCharSourceFuncs, + sizeof(SpiceCharSource)); + src->scd = scd; + + return (GSource *)src; +} static int spice_chr_write(CharDriverState *chr, const uint8_t *buf, int len) { SpiceCharDriver *s = chr->opaque; + int read_bytes; - dprintf(s, 2, "%s: %d\n", __func__, len); - vmc_register_interface(s); assert(s->datalen == 0); - if (s->bufsize < len) { - s->bufsize = len; - s->buffer = qemu_realloc(s->buffer, s->bufsize); - } - memcpy(s->buffer, buf, len); - s->datapos = s->buffer; + s->datapos = buf; s->datalen = len; spice_server_char_device_wakeup(&s->sin); - return len; + read_bytes = len - s->datalen; + if (read_bytes != len) { + /* We'll get passed in the unconsumed data with the next call */ + s->datalen = 0; + s->datapos = NULL; + s->blocked = true; + } + return read_bytes; } static void spice_chr_close(struct CharDriverState *chr) { SpiceCharDriver *s = chr->opaque; - printf("%s\n", __func__); vmc_unregister_interface(s); - qemu_free(s); -} + QLIST_REMOVE(s, next); -static void spice_chr_guest_open(struct CharDriverState *chr) -{ - SpiceCharDriver *s = chr->opaque; - vmc_register_interface(s); + g_free((char *)s->sin.subtype); +#if SPICE_SERVER_VERSION >= 0x000c02 + g_free((char *)s->sin.portname); +#endif + g_free(s); } -static void spice_chr_guest_close(struct CharDriverState *chr) +static void spice_chr_set_fe_open(struct CharDriverState *chr, int fe_open) { SpiceCharDriver *s = chr->opaque; - vmc_unregister_interface(s); + if (fe_open) { + vmc_register_interface(s); + } else { + vmc_unregister_interface(s); + } } static void print_allowed_subtypes(void) @@ -159,46 +240,114 @@ static void print_allowed_subtypes(void) fprintf(stderr, "\n"); } -int qemu_chr_open_spice(QemuOpts *opts, CharDriverState **_chr) +static CharDriverState *chr_open(const char *subtype) { CharDriverState *chr; SpiceCharDriver *s; - const char* name = qemu_opt_get(opts, "name"); - uint32_t debug = qemu_opt_get_number(opts, "debug", 0); - const char** psubtype = spice_server_char_device_recognized_subtypes(); - const char *subtype = NULL; - if (name == NULL) { + chr = g_malloc0(sizeof(CharDriverState)); + s = g_malloc0(sizeof(SpiceCharDriver)); + s->chr = chr; + s->active = false; + s->sin.subtype = g_strdup(subtype); + chr->opaque = s; + chr->chr_write = spice_chr_write; + chr->chr_add_watch = spice_chr_add_watch; + chr->chr_close = spice_chr_close; + chr->chr_set_fe_open = spice_chr_set_fe_open; + chr->explicit_be_open = true; + + QLIST_INSERT_HEAD(&spice_chars, s, next); + + return chr; +} + +CharDriverState *qemu_chr_open_spice_vmc(const char *type) +{ + const char **psubtype = spice_server_char_device_recognized_subtypes(); + + if (type == NULL) { fprintf(stderr, "spice-qemu-char: missing name parameter\n"); print_allowed_subtypes(); - return -EINVAL; + return NULL; } - for(;*psubtype != NULL; ++psubtype) { - if (strcmp(name, *psubtype) == 0) { - subtype = *psubtype; + for (; *psubtype != NULL; ++psubtype) { + if (strcmp(type, *psubtype) == 0) { break; } } - if (subtype == NULL) { - fprintf(stderr, "spice-qemu-char: unsupported name\n"); + if (*psubtype == NULL) { + fprintf(stderr, "spice-qemu-char: unsupported type: %s\n", type); print_allowed_subtypes(); - return -EINVAL; + return NULL; } - chr = qemu_mallocz(sizeof(CharDriverState)); - s = qemu_mallocz(sizeof(SpiceCharDriver)); - s->chr = chr; - s->debug = debug; - s->active = false; - s->sin.subtype = subtype; - chr->opaque = s; - chr->chr_write = spice_chr_write; - chr->chr_close = spice_chr_close; - chr->chr_guest_open = spice_chr_guest_open; - chr->chr_guest_close = spice_chr_guest_close; + return chr_open(type); +} + +#if SPICE_SERVER_VERSION >= 0x000c02 +CharDriverState *qemu_chr_open_spice_port(const char *name) +{ + CharDriverState *chr; + SpiceCharDriver *s; + + if (name == NULL) { + fprintf(stderr, "spice-qemu-char: missing name parameter\n"); + return NULL; + } - qemu_chr_generic_open(chr); + chr = chr_open("port"); + s = chr->opaque; + s->sin.portname = g_strdup(name); - *_chr = chr; - return 0; + return chr; } + +void qemu_spice_register_ports(void) +{ + SpiceCharDriver *s; + + QLIST_FOREACH(s, &spice_chars, next) { + if (s->sin.portname == NULL) { + continue; + } + vmc_register_interface(s); + } +} +#endif + +static void qemu_chr_parse_spice_vmc(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + const char *name = qemu_opt_get(opts, "name"); + + if (name == NULL) { + error_setg(errp, "chardev: spice channel: no name given"); + return; + } + backend->spicevmc = g_new0(ChardevSpiceChannel, 1); + backend->spicevmc->type = g_strdup(name); +} + +static void qemu_chr_parse_spice_port(QemuOpts *opts, ChardevBackend *backend, + Error **errp) +{ + const char *name = qemu_opt_get(opts, "name"); + + if (name == NULL) { + error_setg(errp, "chardev: spice port: no name given"); + return; + } + backend->spiceport = g_new0(ChardevSpicePort, 1); + backend->spiceport->fqdn = g_strdup(name); +} + +static void register_types(void) +{ + register_char_driver_qapi("spicevmc", CHARDEV_BACKEND_KIND_SPICEVMC, + qemu_chr_parse_spice_vmc); + register_char_driver_qapi("spiceport", CHARDEV_BACKEND_KIND_SPICEPORT, + qemu_chr_parse_spice_port); +} + +type_init(register_types);