diff options
| -rw-r--r-- | Makefile.objs | 1 | ||||
| -rwxr-xr-x | configure | 28 | ||||
| -rw-r--r-- | usb-redir.c | 1218 |
3 files changed, 1247 insertions, 0 deletions
diff --git a/Makefile.objs b/Makefile.objs index c43ed05..a82974b 100644 --- a/Makefile.objs +++ b/Makefile.objs @@ -205,6 +205,7 @@ hw-obj-$(CONFIG_HPET) += hpet.o hw-obj-$(CONFIG_APPLESMC) += applesmc.o hw-obj-$(CONFIG_SMARTCARD) += usb-ccid.o ccid-card-passthru.o hw-obj-$(CONFIG_SMARTCARD_NSS) += ccid-card-emulated.o +hw-obj-$(CONFIG_USB_REDIR) += usb-redir.o # PPC devices hw-obj-$(CONFIG_OPENPIC) += openpic.o @@ -177,6 +177,7 @@ spice="" rbd="" smartcard="" smartcard_nss="" +usb_redir="" opengl="" # parse CC options first @@ -743,6 +744,10 @@ for opt do ;; --enable-smartcard-nss) smartcard_nss="yes" ;; + --disable-usb-redir) usb_redir="no" + ;; + --enable-usb-redir) usb_redir="yes" + ;; *) echo "ERROR: unknown option $opt"; show_help="yes" ;; esac @@ -1018,6 +1023,8 @@ echo " --disable-smartcard disable smartcard support" echo " --enable-smartcard enable smartcard support" echo " --disable-smartcard-nss disable smartcard nss support" echo " --enable-smartcard-nss enable smartcard nss support" +echo " --disable-usb-redir disable usb network redirection support" +echo " --enable-usb-redir enable usb network redirection support" echo "" echo "NOTE: The object files are built at the place where configure is launched" exit 1 @@ -2371,6 +2378,22 @@ if test "$smartcard" = "no" ; then smartcard_nss="no" fi +# check for usbredirparser for usb network redirection support +if test "$usb_redir" != "no" ; then + if $pkg_config libusbredirparser >/dev/null 2>&1 ; then + usb_redir="yes" + usb_redir_cflags=$($pkg_config --cflags libusbredirparser 2>/dev/null) + usb_redir_libs=$($pkg_config --libs libusbredirparser 2>/dev/null) + QEMU_CFLAGS="$QEMU_CFLAGS $usb_redir_cflags" + LIBS="$LIBS $usb_redir_libs" + else + if test "$usb_redir" = "yes"; then + feature_not_found "usb-redir" + fi + usb_redir="no" + fi +fi + ########################################## ########################################## @@ -2617,6 +2640,7 @@ echo "spice support $spice" echo "rbd support $rbd" echo "xfsctl support $xfs" echo "nss used $smartcard_nss" +echo "usb net redir $usb_redir" echo "OpenGL support $opengl" if test $sdl_too_old = "yes"; then @@ -2910,6 +2934,10 @@ if test "$smartcard_nss" = "yes" ; then echo "CONFIG_SMARTCARD_NSS=y" >> $config_host_mak fi +if test "$usb_redir" = "yes" ; then + echo "CONFIG_USB_REDIR=y" >> $config_host_mak +fi + if test "$opengl" = "yes" ; then echo "CONFIG_OPENGL=y" >> $config_host_mak fi diff --git a/usb-redir.c b/usb-redir.c new file mode 100644 index 0000000..e212993 --- /dev/null +++ b/usb-redir.c @@ -0,0 +1,1218 @@ +/* + * USB redirector usb-guest + * + * Copyright (c) 2011 Red Hat, Inc. + * + * Red Hat Authors: + * Hans de Goede <hdegoede@redhat.com> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu-common.h" +#include "qemu-timer.h" +#include "monitor.h" +#include "sysemu.h" + +#include <dirent.h> +#include <sys/ioctl.h> +#include <signal.h> +#include <usbredirparser.h> + +#include "hw/usb.h" + +#define MAX_ENDPOINTS 32 +#define EP2I(ep_address) (((ep_address & 0x80) >> 3) | (ep_address & 0x0f)) +#define I2EP(i) (((i & 0x10) << 3) | (i & 0x0f)) + +typedef struct AsyncURB AsyncURB; +typedef struct USBRedirDevice USBRedirDevice; + +/* Struct to hold buffered packets (iso or int input packets) */ +struct buf_packet { + uint8_t *data; + int len; + int status; + QTAILQ_ENTRY(buf_packet)next; +}; + +struct endp_data { + uint8_t type; + uint8_t interval; + uint8_t interface; /* bInterfaceNumber this ep belongs to */ + uint8_t iso_started; + uint8_t iso_error; /* For reporting iso errors to the HC */ + uint8_t interrupt_started; + uint8_t interrupt_error; + QTAILQ_HEAD(, buf_packet) bufpq; +}; + +struct USBRedirDevice { + USBDevice dev; + /* Properties */ + CharDriverState *cs; + uint8_t debug; + /* Data passed from chardev the fd_read cb to the usbredirparser read cb */ + const uint8_t *read_buf; + int read_buf_size; + /* For async handling of open/close */ + QEMUBH *open_close_bh; + /* To delay the usb attach in case of quick chardev close + open */ + QEMUTimer *attach_timer; + int64_t next_attach_time; + struct usbredirparser *parser; + struct endp_data endpoint[MAX_ENDPOINTS]; + uint32_t packet_id; + QTAILQ_HEAD(, AsyncURB) asyncq; +}; + +struct AsyncURB { + USBRedirDevice *dev; + USBPacket *packet; + uint32_t packet_id; + int get; + union { + struct usb_redir_control_packet_header control_packet; + struct usb_redir_bulk_packet_header bulk_packet; + struct usb_redir_interrupt_packet_header interrupt_packet; + }; + QTAILQ_ENTRY(AsyncURB)next; +}; + +static void usbredir_device_connect(void *priv, + struct usb_redir_device_connect_header *device_connect); +static void usbredir_device_disconnect(void *priv); +static void usbredir_interface_info(void *priv, + struct usb_redir_interface_info_header *interface_info); +static void usbredir_ep_info(void *priv, + struct usb_redir_ep_info_header *ep_info); +static void usbredir_configuration_status(void *priv, uint32_t id, + struct usb_redir_configuration_status_header *configuration_status); +static void usbredir_alt_setting_status(void *priv, uint32_t id, + struct usb_redir_alt_setting_status_header *alt_setting_status); +static void usbredir_iso_stream_status(void *priv, uint32_t id, + struct usb_redir_iso_stream_status_header *iso_stream_status); +static void usbredir_interrupt_receiving_status(void *priv, uint32_t id, + struct usb_redir_interrupt_receiving_status_header + *interrupt_receiving_status); +static void usbredir_bulk_streams_status(void *priv, uint32_t id, + struct usb_redir_bulk_streams_status_header *bulk_streams_status); +static void usbredir_control_packet(void *priv, uint32_t id, + struct usb_redir_control_packet_header *control_packet, + uint8_t *data, int data_len); +static void usbredir_bulk_packet(void *priv, uint32_t id, + struct usb_redir_bulk_packet_header *bulk_packet, + uint8_t *data, int data_len); +static void usbredir_iso_packet(void *priv, uint32_t id, + struct usb_redir_iso_packet_header *iso_packet, + uint8_t *data, int data_len); +static void usbredir_interrupt_packet(void *priv, uint32_t id, + struct usb_redir_interrupt_packet_header *interrupt_header, + uint8_t *data, int data_len); + +static int usbredir_handle_status(USBRedirDevice *dev, + int status, int actual_len); + +#define VERSION "qemu usb-redir guest " QEMU_VERSION + +/* + * Logging stuff + */ + +#define ERROR(...) \ + do { \ + if (dev->debug >= usbredirparser_error) { \ + error_report("usb-redir error: " __VA_ARGS__); \ + } \ + } while (0) +#define WARNING(...) \ + do { \ + if (dev->debug >= usbredirparser_warning) { \ + error_report("usb-redir warning: " __VA_ARGS__); \ + } \ + } while (0) +#define INFO(...) \ + do { \ + if (dev->debug >= usbredirparser_info) { \ + error_report("usb-redir: " __VA_ARGS__); \ + } \ + } while (0) +#define DPRINTF(...) \ + do { \ + if (dev->debug >= usbredirparser_debug) { \ + error_report("usb-redir: " __VA_ARGS__); \ + } \ + } while (0) +#define DPRINTF2(...) \ + do { \ + if (dev->debug >= usbredirparser_debug_data) { \ + error_report("usb-redir: " __VA_ARGS__); \ + } \ + } while (0) + +static void usbredir_log(void *priv, int level, const char *msg) +{ + USBRedirDevice *dev = priv; + + if (dev->debug < level) { + return; + } + + error_report("%s\n", msg); +} + +static void usbredir_log_data(USBRedirDevice *dev, const char *desc, + const uint8_t *data, int len) +{ + int i, j, n; + + if (dev->debug < usbredirparser_debug_data) { + return; + } + + for (i = 0; i < len; i += j) { + char buf[128]; + + n = sprintf(buf, "%s", desc); + for (j = 0; j < 8 && i + j < len; j++) { + n += sprintf(buf + n, " %02X", data[i + j]); + } + error_report("%s\n", buf); + } +} + +/* + * usbredirparser io functions + */ + +static int usbredir_read(void *priv, uint8_t *data, int count) +{ + USBRedirDevice *dev = priv; + + if (dev->read_buf_size < count) { + count = dev->read_buf_size; + } + + memcpy(data, dev->read_buf, count); + + dev->read_buf_size -= count; + if (dev->read_buf_size) { + dev->read_buf += count; + } else { + dev->read_buf = NULL; + } + + return count; +} + +static int usbredir_write(void *priv, uint8_t *data, int count) +{ + USBRedirDevice *dev = priv; + + return qemu_chr_write(dev->cs, data, count); +} + +/* + * Async and buffered packets helpers + */ + +static AsyncURB *async_alloc(USBRedirDevice *dev, USBPacket *p) +{ + AsyncURB *aurb = (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); + aurb->dev = dev; + aurb->packet = p; + aurb->packet_id = dev->packet_id; + QTAILQ_INSERT_TAIL(&dev->asyncq, aurb, next); + dev->packet_id++; + + return aurb; +} + +static void async_free(USBRedirDevice *dev, AsyncURB *aurb) +{ + QTAILQ_REMOVE(&dev->asyncq, aurb, next); + qemu_free(aurb); +} + +static AsyncURB *async_find(USBRedirDevice *dev, uint32_t packet_id) +{ + AsyncURB *aurb; + + QTAILQ_FOREACH(aurb, &dev->asyncq, next) { + if (aurb->packet_id == packet_id) { + return aurb; + } + } + ERROR("could not find async urb for packet_id %u\n", packet_id); + return NULL; +} + +static void usbredir_cancel_packet(USBDevice *udev, USBPacket *p) +{ + USBRedirDevice *dev = DO_UPCAST(USBRedirDevice, dev, udev); + AsyncURB *aurb; + + QTAILQ_FOREACH(aurb, &dev->asyncq, next) { + if (p != aurb->packet) { + continue; + } + + DPRINTF("async cancel id %u\n", aurb->packet_id); + usbredirparser_send_cancel_data_packet(dev->parser, aurb->packet_id); + usbredirparser_do_write(dev->parser); + + /* Mark it as dead */ + aurb->packet = NULL; + break; + } +} + +static struct buf_packet *bufp_alloc(USBRedirDevice *dev, + uint8_t *data, int len, int status, uint8_t ep) +{ + struct buf_packet *bufp = qemu_malloc(sizeof(struct buf_packet)); + bufp->data = data; + bufp->len = len; + bufp->status = status; + QTAILQ_INSERT_TAIL(&dev->endpoint[EP2I(ep)].bufpq, bufp, next); + return bufp; +} + +static void bufp_free(USBRedirDevice *dev, struct buf_packet *bufp, + uint8_t ep) +{ + QTAILQ_REMOVE(&dev->endpoint[EP2I(ep)].bufpq, bufp, next); + free(bufp->data); + qemu_free(bufp); +} + +static void usbredir_free_bufpq(USBRedirDevice *dev, uint8_t ep) +{ + struct buf_packet *buf, *buf_next; + + QTAILQ_FOREACH_SAFE(buf, &dev->endpoint[EP2I(ep)].bufpq, next, buf_next) { + bufp_free(dev, buf, ep); + } +} + +/* + * USBDevice callbacks + */ + +static void usbredir_handle_reset(USBDevice *udev) +{ + USBRedirDevice *dev = DO_UPCAST(USBRedirDevice, dev, udev); + + DPRINTF("reset device\n"); + usbredirparser_send_reset(dev->parser); + usbredirparser_do_write(dev->parser); +} + +static int usbredir_handle_iso_data(USBRedirDevice *dev, USBPacket *p, + uint8_t ep) +{ + int status, len; + + if (!dev->endpoint[EP2I(ep)].iso_started && + !dev->endpoint[EP2I(ep)].iso_error) { + struct usb_redir_start_iso_stream_header start_iso = { + .endpoint = ep, + /* TODO maybe do something with these depending on ep interval? */ + .pkts_per_urb = 32, + .no_urbs = 3, + }; + /* No id, we look at the ep when receiving a status back */ + usbredirparser_send_start_iso_stream(dev->parser, 0, &start_iso); + usbredirparser_do_write(dev->parser); + DPRINTF("iso stream started ep %02X\n", ep); + dev->endpoint[EP2I(ep)].iso_started = 1; + } + + if (ep & USB_DIR_IN) { + struct buf_packet *isop; + + isop = QTAILQ_FIRST(&dev->endpoint[EP2I(ep)].bufpq); + if (isop == NULL) { + DPRINTF2("iso-token-in ep %02X, no isop\n", ep); + /* Check iso_error for stream errors, otherwise its an underrun */ + status = dev->endpoint[EP2I(ep)].iso_error; + dev->endpoint[EP2I(ep)].iso_error = 0; + return usbredir_handle_status(dev, status, 0); + } + DPRINTF2("iso-token-in ep %02X status %d len %d\n", ep, isop->status, + isop->len); + + status = isop->status; + if (status != usb_redir_success) { + bufp_free(dev, isop, ep); + return usbredir_handle_status(dev, status, 0); + } + + len = isop->len; + if (len > p->len) { + ERROR("received iso data is larger then packet ep %02X\n", ep); + bufp_free(dev, isop, ep); + return USB_RET_NAK; + } + memcpy(p->data, isop->data, len); + bufp_free(dev, isop, ep); + return len; + } else { + /* If the stream was not started because of a pending error don't + send the packet to the usb-host */ + if (dev->endpoint[EP2I(ep)].iso_started) { + struct usb_redir_iso_packet_header iso_packet = { + .endpoint = ep, + .length = p->len + }; + /* No id, we look at the ep when receiving a status back */ + usbredirparser_send_iso_packet(dev->parser, 0, &iso_packet, + p->data, p->len); + usbredirparser_do_write(dev->parser); + } + status = dev->endpoint[EP2I(ep)].iso_error; + dev->endpoint[EP2I(ep)].iso_error = 0; + DPRINTF2("iso-token-out ep %02X status %d len %d\n", ep, status, + p->len); + return usbredir_handle_status(dev, status, p->len); + } +} + +static void usbredir_stop_iso_stream(USBRedirDevice *dev, uint8_t ep) +{ + struct usb_redir_stop_iso_stream_header stop_iso_stream = { + .endpoint = ep + }; + if (dev->endpoint[EP2I(ep)].iso_started) { + usbredirparser_send_stop_iso_stream(dev->parser, 0, &stop_iso_stream); + DPRINTF("iso stream stopped ep %02X\n", ep); + dev->endpoint[EP2I(ep)].iso_started = 0; + } + usbredir_free_bufpq(dev, ep); +} + +static int usbredir_handle_bulk_data(USBRedirDevice *dev, USBPacket *p, + uint8_t ep) +{ + AsyncURB *aurb = async_alloc(dev, p); + struct usb_redir_bulk_packet_header bulk_packet; + + DPRINTF("bulk-out ep %02X len %d id %u\n", ep, p->len, aurb->packet_id); + + bulk_packet.endpoint = ep; + bulk_packet.length = p->len; + bulk_packet.stream_id = 0; + aurb->bulk_packet = bulk_packet; + + if (ep & USB_DIR_IN) { + usbredirparser_send_bulk_packet(dev->parser, aurb->packet_id, + &bulk_packet, NULL, 0); + } else { + usbredir_log_data(dev, "bulk data out:", p->data, p->len); + usbredirparser_send_bulk_packet(dev->parser, aurb->packet_id, + &bulk_packet, p->data, p->len); + } + usbredirparser_do_write(dev->parser); + return USB_RET_ASYNC; +} + +static int usbredir_handle_interrupt_data(USBRedirDevice *dev, + USBPacket *p, uint8_t ep) +{ + if (ep & USB_DIR_IN) { + /* Input interrupt endpoint, buffered packet input */ + struct buf_packet *intp; + int status, len; + + if (!dev->endpoint[EP2I(ep)].interrupt_started && + !dev->endpoint[EP2I(ep)].interrupt_error) { + struct usb_redir_start_interrupt_receiving_header start_int = { + .endpoint = ep, + }; + /* No id, we look at the ep when receiving a status back */ + usbredirparser_send_start_interrupt_receiving(dev->parser, 0, + &start_int); + usbredirparser_do_write(dev->parser); + DPRINTF("interrupt recv started ep %02X\n", ep); + dev->endpoint[EP2I(ep)].interrupt_started = 1; + } + + intp = QTAILQ_FIRST(&dev->endpoint[EP2I(ep)].bufpq); + if (intp == NULL) { + DPRINTF2("interrupt-token-in ep %02X, no intp\n", ep); + /* Check interrupt_error for stream errors */ + status = dev->endpoint[EP2I(ep)].interrupt_error; + dev->endpoint[EP2I(ep)].interrupt_error = 0; + return usbredir_handle_status(dev, status, 0); + } + DPRINTF("interrupt-token-in ep %02X status %d len %d\n", ep, + intp->status, intp->len); + + status = intp->status; + if (status != usb_redir_success) { + bufp_free(dev, intp, ep); + return usbredir_handle_status(dev, status, 0); + } + + len = intp->len; + if (len > p->len) { + ERROR("received int data is larger then packet ep %02X\n", ep); + bufp_free(dev, intp, ep); + return USB_RET_NAK; + } + memcpy(p->data, intp->data, len); + bufp_free(dev, intp, ep); + return len; + } else { + /* Output interrupt endpoint, normal async operation */ + AsyncURB *aurb = async_alloc(dev, p); + struct usb_redir_interrupt_packet_header interrupt_packet; + + DPRINTF("interrupt-out ep %02X len %d id %u\n", ep, p->len, + aurb->packet_id); + + interrupt_packet.endpoint = ep; + interrupt_packet.length = p->len; + aurb->interrupt_packet = interrupt_packet; + + usbredir_log_data(dev, "interrupt data out:", p->data, p->len); + usbredirparser_send_interrupt_packet(dev->parser, aurb->packet_id, + &interrupt_packet, p->data, p->len); + usbredirparser_do_write(dev->parser); + return USB_RET_ASYNC; + } +} + +static void usbredir_stop_interrupt_receiving(USBRedirDevice *dev, + uint8_t ep) +{ + struct usb_redir_stop_interrupt_receiving_header stop_interrupt_recv = { + .endpoint = ep + }; + if (dev->endpoint[EP2I(ep)].interrupt_started) { + usbredirparser_send_stop_interrupt_receiving(dev->parser, 0, + &stop_interrupt_recv); + DPRINTF("interrupt recv stopped ep %02X\n", ep); + dev->endpoint[EP2I(ep)].interrupt_started = 0; + } + usbredir_free_bufpq(dev, ep); +} + +static int usbredir_handle_data(USBDevice *udev, USBPacket *p) +{ + USBRedirDevice *dev = DO_UPCAST(USBRedirDevice, dev, udev); + uint8_t ep; + + ep = p->devep; + if (p->pid == USB_TOKEN_IN) { + ep |= USB_DIR_IN; + } + + switch (dev->endpoint[EP2I(ep)].type) { + case USB_ENDPOINT_XFER_CONTROL: + ERROR("handle_data called for control transfer on ep %02X\n", ep); + return USB_RET_NAK; + case USB_ENDPOINT_XFER_ISOC: + return usbredir_handle_iso_data(dev, p, ep); + case USB_ENDPOINT_XFER_BULK: + return usbredir_handle_bulk_data(dev, p, ep);; + case USB_ENDPOINT_XFER_INT: + return usbredir_handle_interrupt_data(dev, p, ep);; + default: + ERROR("handle_data ep %02X has unknown type %d\n", ep, + dev->endpoint[EP2I(ep)].type); + return USB_RET_NAK; + } +} + +static int usbredir_set_config(USBRedirDevice *dev, USBPacket *p, + int config) +{ + struct usb_redir_set_configuration_header set_config; + AsyncURB *aurb = async_alloc(dev, p); + int i; + + DPRINTF("set config %d id %u\n", config, aurb->packet_id); + + for (i = 0; i < MAX_ENDPOINTS; i++) { + switch (dev->endpoint[i].type) { + case USB_ENDPOINT_XFER_ISOC: + usbredir_stop_iso_stream(dev, I2EP(i)); + break; + case USB_ENDPOINT_XFER_INT: + if (i & 0x10) { + usbredir_stop_interrupt_receiving(dev, I2EP(i)); + } + break; + } + usbredir_free_bufpq(dev, I2EP(i)); + } + + set_config.configuration = config; + usbredirparser_send_set_configuration(dev->parser, aurb->packet_id, + &set_config); + usbredirparser_do_write(dev->parser); + return USB_RET_ASYNC; +} + +static int usbredir_get_config(USBRedirDevice *dev, USBPacket *p) +{ + AsyncURB *aurb = async_alloc(dev, p); + + DPRINTF("get config id %u\n", aurb->packet_id); + + aurb->get = 1; + usbredirparser_send_get_configuration(dev->parser, aurb->packet_id); + usbredirparser_do_write(dev->parser); + return USB_RET_ASYNC; +} + +static int usbredir_set_interface(USBRedirDevice *dev, USBPacket *p, + int interface, int alt) +{ + struct usb_redir_set_alt_setting_header set_alt; + AsyncURB *aurb = async_alloc(dev, p); + int i; + + DPRINTF("set interface %d alt %d id %u\n", interface, alt, + aurb->packet_id); + + for (i = 0; i < MAX_ENDPOINTS; i++) { + if (dev->endpoint[i].interface == interface) { + switch (dev->endpoint[i].type) { + case USB_ENDPOINT_XFER_ISOC: + usbredir_stop_iso_stream(dev, I2EP(i)); + break; + case USB_ENDPOINT_XFER_INT: + if (i & 0x10) { + usbredir_stop_interrupt_receiving(dev, I2EP(i)); + } + break; + } + usbredir_free_bufpq(dev, I2EP(i)); + } + } + + set_alt.interface = interface; + set_alt.alt = alt; + usbredirparser_send_set_alt_setting(dev->parser, aurb->packet_id, + &set_alt); + usbredirparser_do_write(dev->parser); + return USB_RET_ASYNC; +} + +static int usbredir_get_interface(USBRedirDevice *dev, USBPacket *p, + int interface) +{ + struct usb_redir_get_alt_setting_header get_alt; + AsyncURB *aurb = async_alloc(dev, p); + + DPRINTF("get interface %d id %u\n", interface, aurb->packet_id); + + get_alt.interface = interface; + aurb->get = 1; + usbredirparser_send_get_alt_setting(dev->parser, aurb->packet_id, + &get_alt); + usbredirparser_do_write(dev->parser); + return USB_RET_ASYNC; +} + +static int usbredir_handle_control(USBDevice *udev, USBPacket *p, + int request, int value, int index, int length, uint8_t *data) +{ + USBRedirDevice *dev = DO_UPCAST(USBRedirDevice, dev, udev); + struct usb_redir_control_packet_header control_packet; + AsyncURB *aurb; + + /* Special cases for certain standard device requests */ + switch (request) { + case DeviceOutRequest | USB_REQ_SET_ADDRESS: + DPRINTF("set address %d\n", value); + dev->dev.addr = value; + return 0; + case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: + return usbredir_set_config(dev, p, value & 0xff); + case DeviceRequest | USB_REQ_GET_CONFIGURATION: + return usbredir_get_config(dev, p); + case InterfaceOutRequest | USB_REQ_SET_INTERFACE: + return usbredir_set_interface(dev, p, index, value); + case InterfaceRequest | USB_REQ_GET_INTERFACE: + return usbredir_get_interface(dev, p, index); + } + + /* "Normal" ctrl requests */ + aurb = async_alloc(dev, p); + + /* Note request is (bRequestType << 8) | bRequest */ + DPRINTF("ctrl-out type 0x%x req 0x%x val 0x%x index %d len %d id %u\n", + request >> 8, request & 0xff, value, index, length, + aurb->packet_id); + + control_packet.request = request & 0xFF; + control_packet.requesttype = request >> 8; + control_packet.endpoint = control_packet.requesttype & USB_DIR_IN; + control_packet.value = value; + control_packet.index = index; + control_packet.length = length; + aurb->control_packet = control_packet; + + if (control_packet.requesttype & USB_DIR_IN) { + usbredirparser_send_control_packet(dev->parser, aurb->packet_id, + &control_packet, NULL, 0); + } else { + usbredir_log_data(dev, "ctrl data out:", data, length); + usbredirparser_send_control_packet(dev->parser, aurb->packet_id, + &control_packet, data, length); + } + usbredirparser_do_write(dev->parser); + return USB_RET_ASYNC; +} + +/* + * Close events can be triggered by usbredirparser_do_write which gets called + * from within the USBDevice data / control packet callbacks and doing a + * usb_detach from within these callbacks is not a good idea. + * + * So we use a bh handler to take care of close events. We also handle + * open events from this callback to make sure that a close directly followed + * by an open gets handled in the right order. + */ +static void usbredir_open_close_bh(void *opaque) +{ + USBRedirDevice *dev = opaque; + + usbredir_device_disconnect(dev); + + if (dev->parser) { + usbredirparser_destroy(dev->parser); + dev->parser = NULL; + } + + if (dev->cs->opened) { + dev->parser = qemu_oom_check(usbredirparser_create()); + dev->parser->priv = dev; + dev->parser->log_func = usbredir_log; + dev->parser->read_func = usbredir_read; + dev->parser->write_func = usbredir_write; + dev->parser->device_connect_func = usbredir_device_connect; + dev->parser->device_disconnect_func = usbredir_device_disconnect; + dev->parser->interface_info_func = usbredir_interface_info; + dev->parser->ep_info_func = usbredir_ep_info; + dev->parser->configuration_status_func = usbredir_configuration_status; + dev->parser->alt_setting_status_func = usbredir_alt_setting_status; + dev->parser->iso_stream_status_func = usbredir_iso_stream_status; + dev->parser->interrupt_receiving_status_func = + usbredir_interrupt_receiving_status; + dev->parser->bulk_streams_status_func = usbredir_bulk_streams_status; + dev->parser->control_packet_func = usbredir_control_packet; + dev->parser->bulk_packet_func = usbredir_bulk_packet; + dev->parser->iso_packet_func = usbredir_iso_packet; + dev->parser->interrupt_packet_func = usbredir_interrupt_packet; + dev->read_buf = NULL; + dev->read_buf_size = 0; + usbredirparser_init(dev->parser, VERSION, NULL, 0, 0); + usbredirparser_do_write(dev->parser); + } +} + +static void usbredir_do_attach(void *opaque) +{ + USBRedirDevice *dev = opaque; + + usb_device_attach(&dev->dev); +} + +/* + * chardev callbacks + */ + +static int usbredir_chardev_can_read(void *opaque) +{ + USBRedirDevice *dev = opaque; + + if (dev->parser) { + /* usbredir_parser_do_read will consume *all* data we give it */ + return 1024 * 1024; + } else { + /* usbredir_open_close_bh hasn't handled the open event yet */ + return 0; + } +} + +static void usbredir_chardev_read(void *opaque, const uint8_t *buf, int size) +{ + USBRedirDevice *dev = opaque; + + /* No recursion allowed! */ + assert(dev->read_buf == NULL); + + dev->read_buf = buf; + dev->read_buf_size = size; + + usbredirparser_do_read(dev->parser); + /* Send any acks, etc. which may be queued now */ + usbredirparser_do_write(dev->parser); +} + +static void usbredir_chardev_event(void *opaque, int event) +{ + USBRedirDevice *dev = opaque; + + switch (event) { + case CHR_EVENT_OPENED: + case CHR_EVENT_CLOSED: + qemu_bh_schedule(dev->open_close_bh); + break; + } +} + +/* + * init + destroy + */ + +static int usbredir_initfn(USBDevice *udev) +{ + USBRedirDevice *dev = DO_UPCAST(USBRedirDevice, dev, udev); + int i; + + if (dev->cs == NULL) { + qerror_report(QERR_MISSING_PARAMETER, "chardev"); + return -1; + } + + dev->open_close_bh = qemu_bh_new(usbredir_open_close_bh, dev); + dev->attach_timer = qemu_new_timer_ms(vm_clock, usbredir_do_attach, dev); + + QTAILQ_INIT(&dev->asyncq); + for (i = 0; i < MAX_ENDPOINTS; i++) { + QTAILQ_INIT(&dev->endpoint[i].bufpq); + } + + /* We'll do the attach once we receive the speed from the usb-host */ + udev->auto_attach = 0; + + qemu_chr_add_handlers(dev->cs, usbredir_chardev_can_read, + usbredir_chardev_read, usbredir_chardev_event, dev); + + return 0; +} + +static void usbredir_cleanup_device_queues(USBRedirDevice *dev) +{ + AsyncURB *aurb, *next_aurb; + int i; + + QTAILQ_FOREACH_SAFE(aurb, &dev->asyncq, next, next_aurb) { + async_free(dev, aurb); + } + for (i = 0; i < MAX_ENDPOINTS; i++) { + usbredir_free_bufpq(dev, I2EP(i)); + } +} + +static void usbredir_handle_destroy(USBDevice *udev) +{ + USBRedirDevice *dev = DO_UPCAST(USBRedirDevice, dev, udev); + + qemu_chr_close(dev->cs); + /* Note must be done after qemu_chr_close, as that causes a close event */ + qemu_bh_delete(dev->open_close_bh); + + qemu_del_timer(dev->attach_timer); + qemu_free_timer(dev->attach_timer); + + usbredir_cleanup_device_queues(dev); + + if (dev->parser) { + usbredirparser_destroy(dev->parser); + } +} + +/* + * usbredirparser packet complete callbacks + */ + +static int usbredir_handle_status(USBRedirDevice *dev, + int status, int actual_len) +{ + switch (status) { + case usb_redir_success: + return actual_len; + case usb_redir_stall: + return USB_RET_STALL; + case usb_redir_cancelled: + WARNING("returning cancelled packet to HC?\n"); + case usb_redir_inval: + case usb_redir_ioerror: + case usb_redir_timeout: + default: + return USB_RET_NAK; + } +} + +static void usbredir_device_connect(void *priv, + struct usb_redir_device_connect_header *device_connect) +{ + USBRedirDevice *dev = priv; + + switch (device_connect->speed) { + case usb_redir_speed_low: + DPRINTF("attaching low speed device\n"); + dev->dev.speed = USB_SPEED_LOW; + break; + case usb_redir_speed_full: + DPRINTF("attaching full speed device\n"); + dev->dev.speed = USB_SPEED_FULL; + break; + case usb_redir_speed_high: + DPRINTF("attaching high speed device\n"); + dev->dev.speed = USB_SPEED_HIGH; + break; + case usb_redir_speed_super: + DPRINTF("attaching super speed device\n"); + dev->dev.speed = USB_SPEED_SUPER; + break; + default: + DPRINTF("attaching unknown speed device, assuming full speed\n"); + dev->dev.speed = USB_SPEED_FULL; + } + dev->dev.speedmask = (1 << dev->dev.speed); + qemu_mod_timer(dev->attach_timer, dev->next_attach_time); +} + +static void usbredir_device_disconnect(void *priv) +{ + USBRedirDevice *dev = priv; + + /* Stop any pending attaches */ + qemu_del_timer(dev->attach_timer); + + if (dev->dev.attached) { + usb_device_detach(&dev->dev); + usbredir_cleanup_device_queues(dev); + /* + * Delay next usb device attach to give the guest a chance to see + * see the detach / attach in case of quick close / open succession + */ + dev->next_attach_time = qemu_get_clock_ms(vm_clock) + 200; + } +} + +static void usbredir_interface_info(void *priv, + struct usb_redir_interface_info_header *interface_info) +{ + /* The intention is to allow specifying acceptable interface classes + for redirection on the cmdline and in the future verify this here, + and disconnect (or never connect) the device if a not accepted + interface class is detected */ +} + +static void usbredir_ep_info(void *priv, + struct usb_redir_ep_info_header *ep_info) +{ + USBRedirDevice *dev = priv; + int i; + + for (i = 0; i < MAX_ENDPOINTS; i++) { + dev->endpoint[i].type = ep_info->type[i]; + dev->endpoint[i].interval = ep_info->interval[i]; + dev->endpoint[i].interface = ep_info->interface[i]; + if (dev->endpoint[i].type != usb_redir_type_invalid) { + DPRINTF("ep: %02X type: %d interface: %d\n", I2EP(i), + dev->endpoint[i].type, dev->endpoint[i].interface); + } + } +} + +static void usbredir_configuration_status(void *priv, uint32_t id, + struct usb_redir_configuration_status_header *config_status) +{ + USBRedirDevice *dev = priv; + AsyncURB *aurb; + int len = 0; + + DPRINTF("set config status %d config %d id %u\n", config_status->status, + config_status->configuration, id); + + aurb = async_find(dev, id); + if (!aurb) { + return; + } + if (aurb->packet) { + if (aurb->get) { + dev->dev.data_buf[0] = config_status->configuration; + len = 1; + } + aurb->packet->len = + usbredir_handle_status(dev, config_status->status, len); + usb_generic_async_ctrl_complete(&dev->dev, aurb->packet); + } + async_free(dev, aurb); +} + +static void usbredir_alt_setting_status(void *priv, uint32_t id, + struct usb_redir_alt_setting_status_header *alt_setting_status) +{ + USBRedirDevice *dev = priv; + AsyncURB *aurb; + int len = 0; + + DPRINTF("alt status %d intf %d alt %d id: %u\n", + alt_setting_status->status, + alt_setting_status->interface, + alt_setting_status->alt, id); + + aurb = async_find(dev, id); + if (!aurb) { + return; + } + if (aurb->packet) { + if (aurb->get) { + dev->dev.data_buf[0] = alt_setting_status->alt; + len = 1; + } + aurb->packet->len = + usbredir_handle_status(dev, alt_setting_status->status, len); + usb_generic_async_ctrl_complete(&dev->dev, aurb->packet); + } + async_free(dev, aurb); +} + +static void usbredir_iso_stream_status(void *priv, uint32_t id, + struct usb_redir_iso_stream_status_header *iso_stream_status) +{ + USBRedirDevice *dev = priv; + uint8_t ep = iso_stream_status->endpoint; + + DPRINTF("iso status %d ep %02X id %u\n", iso_stream_status->status, + ep, id); + + dev->endpoint[EP2I(ep)].iso_error = iso_stream_status->status; + if (iso_stream_status->status == usb_redir_stall) { + DPRINTF("iso stream stopped by peer ep %02X\n", ep); + dev->endpoint[EP2I(ep)].iso_started = 0; + } +} + +static void usbredir_interrupt_receiving_status(void *priv, uint32_t id, + struct usb_redir_interrupt_receiving_status_header + *interrupt_receiving_status) +{ + USBRedirDevice *dev = priv; + uint8_t ep = interrupt_receiving_status->endpoint; + + DPRINTF("interrupt recv status %d ep %02X id %u\n", + interrupt_receiving_status->status, ep, id); + + dev->endpoint[EP2I(ep)].interrupt_error = + interrupt_receiving_status->status; + if (interrupt_receiving_status->status == usb_redir_stall) { + DPRINTF("interrupt receiving stopped by peer ep %02X\n", ep); + dev->endpoint[EP2I(ep)].interrupt_started = 0; + } +} + +static void usbredir_bulk_streams_status(void *priv, uint32_t id, + struct usb_redir_bulk_streams_status_header *bulk_streams_status) +{ +} + +static void usbredir_control_packet(void *priv, uint32_t id, + struct usb_redir_control_packet_header *control_packet, + uint8_t *data, int data_len) +{ + USBRedirDevice *dev = priv; + int len = control_packet->length; + AsyncURB *aurb; + + DPRINTF("ctrl-in status %d len %d id %u\n", control_packet->status, + len, id); + + aurb = async_find(dev, id); + if (!aurb) { + free(data); + return; + } + + aurb->control_packet.status = control_packet->status; + aurb->control_packet.length = control_packet->length; + if (memcmp(&aurb->control_packet, control_packet, + sizeof(*control_packet))) { + ERROR("return control packet mismatch, please report this!\n"); + len = USB_RET_NAK; + } + + if (aurb->packet) { + len = usbredir_handle_status(dev, control_packet->status, len); + if (len > 0) { + usbredir_log_data(dev, "ctrl data in:", data, data_len); + if (data_len <= sizeof(dev->dev.data_buf)) { + memcpy(dev->dev.data_buf, data, data_len); + } else { + ERROR("ctrl buffer too small (%d > %zu)\n", + data_len, sizeof(dev->dev.data_buf)); + len = USB_RET_STALL; + } + } + aurb->packet->len = len; + usb_generic_async_ctrl_complete(&dev->dev, aurb->packet); + } + async_free(dev, aurb); + free(data); +} + +static void usbredir_bulk_packet(void *priv, uint32_t id, + struct usb_redir_bulk_packet_header *bulk_packet, + uint8_t *data, int data_len) +{ + USBRedirDevice *dev = priv; + uint8_t ep = bulk_packet->endpoint; + int len = bulk_packet->length; + AsyncURB *aurb; + + DPRINTF("bulk-in status %d ep %02X len %d id %u\n", bulk_packet->status, + ep, len, id); + + aurb = async_find(dev, id); + if (!aurb) { + free(data); + return; + } + + if (aurb->bulk_packet.endpoint != bulk_packet->endpoint || + aurb->bulk_packet.stream_id != bulk_packet->stream_id) { + ERROR("return bulk packet mismatch, please report this!\n"); + len = USB_RET_NAK; + } + + if (aurb->packet) { + len = usbredir_handle_status(dev, bulk_packet->status, len); + if (len > 0) { + usbredir_log_data(dev, "bulk data in:", data, data_len); + if (data_len <= aurb->packet->len) { + memcpy(aurb->packet->data, data, data_len); + } else { + ERROR("bulk buffer too small (%d > %d)\n", data_len, + aurb->packet->len); + len = USB_RET_STALL; + } + } + aurb->packet->len = len; + usb_packet_complete(&dev->dev, aurb->packet); + } + async_free(dev, aurb); + free(data); +} + +static void usbredir_iso_packet(void *priv, uint32_t id, + struct usb_redir_iso_packet_header *iso_packet, + uint8_t *data, int data_len) +{ + USBRedirDevice *dev = priv; + uint8_t ep = iso_packet->endpoint; + + DPRINTF2("iso-in status %d ep %02X len %d id %u\n", iso_packet->status, ep, + data_len, id); + + if (dev->endpoint[EP2I(ep)].type != USB_ENDPOINT_XFER_ISOC) { + ERROR("received iso packet for non iso endpoint %02X\n", ep); + free(data); + return; + } + + if (dev->endpoint[EP2I(ep)].iso_started == 0) { + DPRINTF("received iso packet for non started stream ep %02X\n", ep); + free(data); + return; + } + + /* bufp_alloc also adds the packet to the ep queue */ + bufp_alloc(dev, data, data_len, iso_packet->status, ep); +} + +static void usbredir_interrupt_packet(void *priv, uint32_t id, + struct usb_redir_interrupt_packet_header *interrupt_packet, + uint8_t *data, int data_len) +{ + USBRedirDevice *dev = priv; + uint8_t ep = interrupt_packet->endpoint; + + DPRINTF("interrupt-in status %d ep %02X len %d id %u\n", + interrupt_packet->status, ep, data_len, id); + + if (dev->endpoint[EP2I(ep)].type != USB_ENDPOINT_XFER_INT) { + ERROR("received int packet for non interrupt endpoint %02X\n", ep); + free(data); + return; + } + + if (ep & USB_DIR_IN) { + if (dev->endpoint[EP2I(ep)].interrupt_started == 0) { + DPRINTF("received int packet while not started ep %02X\n", ep); + free(data); + return; + } + + /* bufp_alloc also adds the packet to the ep queue */ + bufp_alloc(dev, data, data_len, interrupt_packet->status, ep); + } else { + int len = interrupt_packet->length; + + AsyncURB *aurb = async_find(dev, id); + if (!aurb) { + return; + } + + if (aurb->interrupt_packet.endpoint != interrupt_packet->endpoint) { + ERROR("return int packet mismatch, please report this!\n"); + len = USB_RET_NAK; + } + + if (aurb->packet) { + aurb->packet->len = usbredir_handle_status(dev, + interrupt_packet->status, len); + usb_packet_complete(&dev->dev, aurb->packet); + } + async_free(dev, aurb); + } +} + +static struct USBDeviceInfo usbredir_dev_info = { + .product_desc = "USB Redirection Device", + .qdev.name = "usb-redir", + .qdev.size = sizeof(USBRedirDevice), + .init = usbredir_initfn, + .handle_destroy = usbredir_handle_destroy, + .handle_packet = usb_generic_handle_packet, + .cancel_packet = usbredir_cancel_packet, + .handle_reset = usbredir_handle_reset, + .handle_data = usbredir_handle_data, + .handle_control = usbredir_handle_control, + .qdev.props = (Property[]) { + DEFINE_PROP_CHR("chardev", USBRedirDevice, cs), + DEFINE_PROP_UINT8("debug", USBRedirDevice, debug, 0), + DEFINE_PROP_END_OF_LIST(), + }, +}; + +static void usbredir_register_devices(void) +{ + usb_qdev_register(&usbredir_dev_info); +} +device_init(usbredir_register_devices); |