diff options
| -rw-r--r-- | block/Makefile.objs | 2 | ||||
| -rw-r--r-- | block/nbd-client.c | 385 | ||||
| -rw-r--r-- | block/nbd-client.h | 50 | ||||
| -rw-r--r-- | block/nbd.c | 380 | ||||
| -rw-r--r-- | blockdev.c | 2 | ||||
| -rw-r--r-- | hw/display/qxl.c | 10 | ||||
| -rw-r--r-- | include/sysemu/blockdev.h | 2 | ||||
| -rw-r--r-- | include/sysemu/char.h | 10 | ||||
| -rw-r--r-- | include/ui/qemu-spice.h | 2 | ||||
| -rw-r--r-- | libcacard/vscclient.c | 10 | ||||
| -rw-r--r-- | nbd.c | 2 | ||||
| -rw-r--r-- | qemu-char.c | 7 | ||||
| -rw-r--r-- | qmp.c | 2 | ||||
| -rw-r--r-- | spice-qemu-char.c | 11 | ||||
| -rw-r--r-- | ui/spice-core.c | 22 | ||||
| -rw-r--r-- | ui/spice-display.c | 17 |
16 files changed, 537 insertions, 377 deletions
diff --git a/block/Makefile.objs b/block/Makefile.objs index f43ecbc..4e8c91e 100644 --- a/block/Makefile.objs +++ b/block/Makefile.objs @@ -10,7 +10,7 @@ block-obj-$(CONFIG_POSIX) += raw-posix.o block-obj-$(CONFIG_LINUX_AIO) += linux-aio.o ifeq ($(CONFIG_POSIX),y) -block-obj-y += nbd.o sheepdog.o +block-obj-y += nbd.o nbd-client.o sheepdog.o block-obj-$(CONFIG_LIBISCSI) += iscsi.o block-obj-$(CONFIG_CURL) += curl.o block-obj-$(CONFIG_RBD) += rbd.o diff --git a/block/nbd-client.c b/block/nbd-client.c new file mode 100644 index 0000000..0922b78 --- /dev/null +++ b/block/nbd-client.c @@ -0,0 +1,385 @@ +/* + * QEMU Block driver for NBD + * + * Copyright (C) 2008 Bull S.A.S. + * Author: Laurent Vivier <Laurent.Vivier@bull.net> + * + * Some parts: + * Copyright (C) 2007 Anthony Liguori <anthony@codemonkey.ws> + * + * 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 "nbd-client.h" +#include "qemu/sockets.h" + +#define HANDLE_TO_INDEX(bs, handle) ((handle) ^ ((uint64_t)(intptr_t)bs)) +#define INDEX_TO_HANDLE(bs, index) ((index) ^ ((uint64_t)(intptr_t)bs)) + +static void nbd_recv_coroutines_enter_all(NbdClientSession *s) +{ + int i; + + for (i = 0; i < MAX_NBD_REQUESTS; i++) { + if (s->recv_coroutine[i]) { + qemu_coroutine_enter(s->recv_coroutine[i], NULL); + } + } +} + +static void nbd_reply_ready(void *opaque) +{ + NbdClientSession *s = opaque; + uint64_t i; + int ret; + + if (s->reply.handle == 0) { + /* No reply already in flight. Fetch a header. It is possible + * that another thread has done the same thing in parallel, so + * the socket is not readable anymore. + */ + ret = nbd_receive_reply(s->sock, &s->reply); + if (ret == -EAGAIN) { + return; + } + if (ret < 0) { + s->reply.handle = 0; + goto fail; + } + } + + /* There's no need for a mutex on the receive side, because the + * handler acts as a synchronization point and ensures that only + * one coroutine is called until the reply finishes. */ + i = HANDLE_TO_INDEX(s, s->reply.handle); + if (i >= MAX_NBD_REQUESTS) { + goto fail; + } + + if (s->recv_coroutine[i]) { + qemu_coroutine_enter(s->recv_coroutine[i], NULL); + return; + } + +fail: + nbd_recv_coroutines_enter_all(s); +} + +static void nbd_restart_write(void *opaque) +{ + NbdClientSession *s = opaque; + + qemu_coroutine_enter(s->send_coroutine, NULL); +} + +static int nbd_co_send_request(NbdClientSession *s, + struct nbd_request *request, + QEMUIOVector *qiov, int offset) +{ + int rc, ret; + + qemu_co_mutex_lock(&s->send_mutex); + s->send_coroutine = qemu_coroutine_self(); + qemu_aio_set_fd_handler(s->sock, nbd_reply_ready, nbd_restart_write, s); + if (qiov) { + if (!s->is_unix) { + socket_set_cork(s->sock, 1); + } + rc = nbd_send_request(s->sock, request); + if (rc >= 0) { + ret = qemu_co_sendv(s->sock, qiov->iov, qiov->niov, + offset, request->len); + if (ret != request->len) { + rc = -EIO; + } + } + if (!s->is_unix) { + socket_set_cork(s->sock, 0); + } + } else { + rc = nbd_send_request(s->sock, request); + } + qemu_aio_set_fd_handler(s->sock, nbd_reply_ready, NULL, s); + s->send_coroutine = NULL; + qemu_co_mutex_unlock(&s->send_mutex); + return rc; +} + +static void nbd_co_receive_reply(NbdClientSession *s, + struct nbd_request *request, struct nbd_reply *reply, + QEMUIOVector *qiov, int offset) +{ + int ret; + + /* Wait until we're woken up by the read handler. TODO: perhaps + * peek at the next reply and avoid yielding if it's ours? */ + qemu_coroutine_yield(); + *reply = s->reply; + if (reply->handle != request->handle) { + reply->error = EIO; + } else { + if (qiov && reply->error == 0) { + ret = qemu_co_recvv(s->sock, qiov->iov, qiov->niov, + offset, request->len); + if (ret != request->len) { + reply->error = EIO; + } + } + + /* Tell the read handler to read another header. */ + s->reply.handle = 0; + } +} + +static void nbd_coroutine_start(NbdClientSession *s, + struct nbd_request *request) +{ + int i; + + /* Poor man semaphore. The free_sema is locked when no other request + * can be accepted, and unlocked after receiving one reply. */ + if (s->in_flight >= MAX_NBD_REQUESTS - 1) { + qemu_co_mutex_lock(&s->free_sema); + assert(s->in_flight < MAX_NBD_REQUESTS); + } + s->in_flight++; + + for (i = 0; i < MAX_NBD_REQUESTS; i++) { + if (s->recv_coroutine[i] == NULL) { + s->recv_coroutine[i] = qemu_coroutine_self(); + break; + } + } + + assert(i < MAX_NBD_REQUESTS); + request->handle = INDEX_TO_HANDLE(s, i); +} + +static void nbd_coroutine_end(NbdClientSession *s, + struct nbd_request *request) +{ + int i = HANDLE_TO_INDEX(s, request->handle); + s->recv_coroutine[i] = NULL; + if (s->in_flight-- == MAX_NBD_REQUESTS) { + qemu_co_mutex_unlock(&s->free_sema); + } +} + +static int nbd_co_readv_1(NbdClientSession *client, int64_t sector_num, + int nb_sectors, QEMUIOVector *qiov, + int offset) +{ + struct nbd_request request = { .type = NBD_CMD_READ }; + struct nbd_reply reply; + ssize_t ret; + + request.from = sector_num * 512; + request.len = nb_sectors * 512; + + nbd_coroutine_start(client, &request); + ret = nbd_co_send_request(client, &request, NULL, 0); + if (ret < 0) { + reply.error = -ret; + } else { + nbd_co_receive_reply(client, &request, &reply, qiov, offset); + } + nbd_coroutine_end(client, &request); + return -reply.error; + +} + +static int nbd_co_writev_1(NbdClientSession *client, int64_t sector_num, + int nb_sectors, QEMUIOVector *qiov, + int offset) +{ + struct nbd_request request = { .type = NBD_CMD_WRITE }; + struct nbd_reply reply; + ssize_t ret; + + if (!bdrv_enable_write_cache(client->bs) && + (client->nbdflags & NBD_FLAG_SEND_FUA)) { + request.type |= NBD_CMD_FLAG_FUA; + } + + request.from = sector_num * 512; + request.len = nb_sectors * 512; + + nbd_coroutine_start(client, &request); + ret = nbd_co_send_request(client, &request, qiov, offset); + if (ret < 0) { + reply.error = -ret; + } else { + nbd_co_receive_reply(client, &request, &reply, NULL, 0); + } + nbd_coroutine_end(client, &request); + return -reply.error; +} + +/* qemu-nbd has a limit of slightly less than 1M per request. Try to + * remain aligned to 4K. */ +#define NBD_MAX_SECTORS 2040 + +int nbd_client_session_co_readv(NbdClientSession *client, int64_t sector_num, + int nb_sectors, QEMUIOVector *qiov) +{ + int offset = 0; + int ret; + while (nb_sectors > NBD_MAX_SECTORS) { + ret = nbd_co_readv_1(client, sector_num, + NBD_MAX_SECTORS, qiov, offset); + if (ret < 0) { + return ret; + } + offset += NBD_MAX_SECTORS * 512; + sector_num += NBD_MAX_SECTORS; + nb_sectors -= NBD_MAX_SECTORS; + } + return nbd_co_readv_1(client, sector_num, nb_sectors, qiov, offset); +} + +int nbd_client_session_co_writev(NbdClientSession *client, int64_t sector_num, + int nb_sectors, QEMUIOVector *qiov) +{ + int offset = 0; + int ret; + while (nb_sectors > NBD_MAX_SECTORS) { + ret = nbd_co_writev_1(client, sector_num, + NBD_MAX_SECTORS, qiov, offset); + if (ret < 0) { + return ret; + } + offset += NBD_MAX_SECTORS * 512; + sector_num += NBD_MAX_SECTORS; + nb_sectors -= NBD_MAX_SECTORS; + } + return nbd_co_writev_1(client, sector_num, nb_sectors, qiov, offset); +} + +int nbd_client_session_co_flush(NbdClientSession *client) +{ + struct nbd_request request = { .type = NBD_CMD_FLUSH }; + struct nbd_reply reply; + ssize_t ret; + + if (!(client->nbdflags & NBD_FLAG_SEND_FLUSH)) { + return 0; + } + + if (client->nbdflags & NBD_FLAG_SEND_FUA) { + request.type |= NBD_CMD_FLAG_FUA; + } + + request.from = 0; + request.len = 0; + + nbd_coroutine_start(client, &request); + ret = nbd_co_send_request(client, &request, NULL, 0); + if (ret < 0) { + reply.error = -ret; + } else { + nbd_co_receive_reply(client, &request, &reply, NULL, 0); + } + nbd_coroutine_end(client, &request); + return -reply.error; +} + +int nbd_client_session_co_discard(NbdClientSession *client, int64_t sector_num, + int nb_sectors) +{ + struct nbd_request request = { .type = NBD_CMD_TRIM }; + struct nbd_reply reply; + ssize_t ret; + + if (!(client->nbdflags & NBD_FLAG_SEND_TRIM)) { + return 0; + } + request.from = sector_num * 512; + request.len = nb_sectors * 512; + + nbd_coroutine_start(client, &request); + ret = nbd_co_send_request(client, &request, NULL, 0); + if (ret < 0) { + reply.error = -ret; + } else { + nbd_co_receive_reply(client, &request, &reply, NULL, 0); + } + nbd_coroutine_end(client, &request); + return -reply.error; + +} + +static void nbd_teardown_connection(NbdClientSession *client) +{ + struct nbd_request request = { + .type = NBD_CMD_DISC, + .from = 0, + .len = 0 + }; + + nbd_send_request(client->sock, &request); + + /* finish any pending coroutines */ + shutdown(client->sock, 2); + nbd_recv_coroutines_enter_all(client); + + qemu_aio_set_fd_handler(client->sock, NULL, NULL, NULL); + closesocket(client->sock); + client->sock = -1; +} + +void nbd_client_session_close(NbdClientSession *client) +{ + if (!client->bs) { + return; + } + + nbd_teardown_connection(client); + client->bs = NULL; +} + +int nbd_client_session_init(NbdClientSession *client, BlockDriverState *bs, + int sock, const char *export) +{ + int ret; + + /* NBD handshake */ + logout("session init %s\n", export); + qemu_set_block(sock); + ret = nbd_receive_negotiate(sock, export, + &client->nbdflags, &client->size, + &client->blocksize); + if (ret < 0) { + logout("Failed to negotiate with the NBD server\n"); + closesocket(sock); + return ret; + } + + qemu_co_mutex_init(&client->send_mutex); + qemu_co_mutex_init(&client->free_sema); + client->bs = bs; + client->sock = sock; + + /* Now that we're connected, set the socket to be non-blocking and + * kick the reply mechanism. */ + qemu_set_nonblock(sock); + qemu_aio_set_fd_handler(sock, nbd_reply_ready, NULL, client); + + logout("Established connection with NBD server\n"); + return 0; +} diff --git a/block/nbd-client.h b/block/nbd-client.h new file mode 100644 index 0000000..f2a6337 --- /dev/null +++ b/block/nbd-client.h @@ -0,0 +1,50 @@ +#ifndef NBD_CLIENT_H +#define NBD_CLIENT_H + +#include "qemu-common.h" +#include "block/nbd.h" +#include "block/block_int.h" + +/* #define DEBUG_NBD */ + +#if defined(DEBUG_NBD) +#define logout(fmt, ...) \ + fprintf(stderr, "nbd\t%-24s" fmt, __func__, ##__VA_ARGS__) +#else +#define logout(fmt, ...) ((void)0) +#endif + +#define MAX_NBD_REQUESTS 16 + +typedef struct NbdClientSession { + int sock; + uint32_t nbdflags; + off_t size; + size_t blocksize; + + CoMutex send_mutex; + CoMutex free_sema; + Coroutine *send_coroutine; + int in_flight; + + Coroutine *recv_coroutine[MAX_NBD_REQUESTS]; + struct nbd_reply reply; + + bool is_unix; + + BlockDriverState *bs; +} NbdClientSession; + +int nbd_client_session_init(NbdClientSession *client, BlockDriverState *bs, + int sock, const char *export_name); +void nbd_client_session_close(NbdClientSession *client); + +int nbd_client_session_co_discard(NbdClientSession *client, int64_t sector_num, + int nb_sectors); +int nbd_client_session_co_flush(NbdClientSession *client); +int nbd_client_session_co_writev(NbdClientSession *client, int64_t sector_num, + int nb_sectors, QEMUIOVector *qiov); +int nbd_client_session_co_readv(NbdClientSession *client, int64_t sector_num, + int nb_sectors, QEMUIOVector *qiov); + +#endif /* NBD_CLIENT_H */ diff --git a/block/nbd.c b/block/nbd.c index c8deeee..4455a13 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -26,8 +26,7 @@ * THE SOFTWARE. */ -#include "qemu-common.h" -#include "block/nbd.h" +#include "block/nbd-client.h" #include "qemu/uri.h" #include "block/block_int.h" #include "qemu/module.h" @@ -40,37 +39,9 @@ #define EN_OPTSTR ":exportname=" -/* #define DEBUG_NBD */ - -#if defined(DEBUG_NBD) -#define logout(fmt, ...) \ - fprintf(stderr, "nbd\t%-24s" fmt, __func__, ##__VA_ARGS__) -#else -#define logout(fmt, ...) ((void)0) -#endif - -#define MAX_NBD_REQUESTS 16 -#define HANDLE_TO_INDEX(bs, handle) ((handle) ^ ((uint64_t)(intptr_t)bs)) -#define INDEX_TO_HANDLE(bs, index) ((index) ^ ((uint64_t)(intptr_t)bs)) - typedef struct BDRVNBDState { - int sock; - uint32_t nbdflags; - off_t size; - size_t blocksize; - - CoMutex send_mutex; - CoMutex free_sema; - Coroutine *send_coroutine; - int in_flight; - - Coroutine *recv_coroutine[MAX_NBD_REQUESTS]; - struct nbd_reply reply; - - bool is_unix; + NbdClientSession client; QemuOpts *socket_opts; - - char *export_name; /* An NBD server may export several devices */ } BDRVNBDState; static int nbd_parse_uri(const char *filename, QDict *options) @@ -217,7 +188,7 @@ out: g_free(file); } -static int nbd_config(BDRVNBDState *s, QDict *options) +static int nbd_config(BDRVNBDState *s, QDict *options, char **export) { Error *local_err = NULL; @@ -227,9 +198,9 @@ static int nbd_config(BDRVNBDState *s, QDict *options) "be used at the same time."); return -EINVAL; } - s->is_unix = true; + s->client.is_unix = true; } else if (qdict_haskey(options, "host")) { - s->is_unix = false; + s->client.is_unix = false; } else { return -EINVAL; } @@ -247,162 +218,20 @@ static int nbd_config(BDRVNBDState *s, QDict *options) qemu_opt_set_number(s->socket_opts, "port", NBD_DEFAULT_PORT); } - s->export_name = g_strdup(qdict_get_try_str(options, "export")); - if (s->export_name) { + *export = g_strdup(qdict_get_try_str(options, "export")); + if (*export) { qdict_del(options, "export"); } return 0; } - -static void nbd_coroutine_start(BDRVNBDState *s, struct nbd_request *request) -{ - int i; - - /* Poor man semaphore. The free_sema is locked when no other request - * can be accepted, and unlocked after receiving one reply. */ - if (s->in_flight >= MAX_NBD_REQUESTS - 1) { - qemu_co_mutex_lock(&s->free_sema); - assert(s->in_flight < MAX_NBD_REQUESTS); - } - s->in_flight++; - - for (i = 0; i < MAX_NBD_REQUESTS; i++) { - if (s->recv_coroutine[i] == NULL) { - s->recv_coroutine[i] = qemu_coroutine_self(); - break; - } - } - - assert(i < MAX_NBD_REQUESTS); - request->handle = INDEX_TO_HANDLE(s, i); -} - -static void nbd_reply_ready(void *opaque) -{ - BDRVNBDState *s = opaque; - uint64_t i; - int ret; - - if (s->reply.handle == 0) { - /* No reply already in flight. Fetch a header. It is possible - * that another thread has done the same thing in parallel, so - * the socket is not readable anymore. - */ - ret = nbd_receive_reply(s->sock, &s->reply); - if (ret == -EAGAIN) { - return; - } - if (ret < 0) { - s->reply.handle = 0; - goto fail; - } - } - - /* There's no need for a mutex on the receive side, because the - * handler acts as a synchronization point and ensures that only - * one coroutine is called until the reply finishes. */ - i = HANDLE_TO_INDEX(s, s->reply.handle); - if (i >= MAX_NBD_REQUESTS) { - goto fail; - } - - if (s->recv_coroutine[i]) { - qemu_coroutine_enter(s->recv_coroutine[i], NULL); - return; - } - -fail: - for (i = 0; i < MAX_NBD_REQUESTS; i++) { - if (s->recv_coroutine[i]) { - qemu_coroutine_enter(s->recv_coroutine[i], NULL); - } - } -} - -static void nbd_restart_write(void *opaque) -{ - BDRVNBDState *s = opaque; - qemu_coroutine_enter(s->send_coroutine, NULL); -} - -static int nbd_co_send_request(BDRVNBDState *s, struct nbd_request *request, - QEMUIOVector *qiov, int offset) -{ - int rc, ret; - - qemu_co_mutex_lock(&s->send_mutex); - s->send_coroutine = qemu_coroutine_self(); - qemu_aio_set_fd_handler(s->sock, nbd_reply_ready, nbd_restart_write, s); - if (qiov) { - if (!s->is_unix) { - socket_set_cork(s->sock, 1); - } - rc = nbd_send_request(s->sock, request); - if (rc >= 0) { - ret = qemu_co_sendv(s->sock, qiov->iov, qiov->niov, - offset, request->len); - if (ret != request->len) { - rc = -EIO; - } - } - if (!s->is_unix) { - socket_set_cork(s->sock, 0); - } - } else { - rc = nbd_send_request(s->sock, request); - } - qemu_aio_set_fd_handler(s->sock, nbd_reply_ready, NULL, s); - s->send_coroutine = NULL; - qemu_co_mutex_unlock(&s->send_mutex); - return rc; -} - -static void nbd_co_receive_reply(BDRVNBDState *s, struct nbd_request *request, - struct nbd_reply *reply, - QEMUIOVector *qiov, int offset) -{ - int ret; - - /* Wait until we're woken up by the read handler. TODO: perhaps - * peek at the next reply and avoid yielding if it's ours? */ - qemu_coroutine_yield(); - *reply = s->reply; - if (reply->handle != request->handle) { - reply->error = EIO; - } else { - if (qiov && reply->error == 0) { - ret = qemu_co_recvv(s->sock, qiov->iov, qiov->niov, - offset, request->len); - if (ret != request->len) { - reply->error = EIO; - } - } - - /* Tell the read handler to read another header. */ - s->reply.handle = 0; - } -} - -static void nbd_coroutine_end(BDRVNBDState *s, struct nbd_request *request) -{ - int i = HANDLE_TO_INDEX(s, request->handle); - s->recv_coroutine[i] = NULL; - if (s->in_flight-- == MAX_NBD_REQUESTS) { - qemu_co_mutex_unlock(&s->free_sema); - } -} - static int nbd_establish_connection(BlockDriverState *bs) { BDRVNBDState *s = bs->opaque; int sock; - int ret; - off_t size; - size_t blocksize; - if (s->is_unix) { + if (s->client.is_unix) { sock = unix_socket_outgoing(qemu_opt_get(s->socket_opts, "path")); } else { sock = tcp_socket_outgoing_opts(s->socket_opts); @@ -417,53 +246,18 @@ static int nbd_establish_connection(BlockDriverState *bs) return -errno; } - /* NBD handshake */ - ret = nbd_receive_negotiate(sock, s->export_name, &s->nbdflags, &size, - &blocksize); - if (ret < 0) { - logout("Failed to negotiate with the NBD server\n"); - closesocket(sock); - return ret; - } - - /* Now that we're connected, set the socket to be non-blocking and - * kick the reply mechanism. */ - qemu_set_nonblock(sock); - qemu_aio_set_fd_handler(sock, nbd_reply_ready, NULL, s); - - s->sock = sock; - s->size = size; - s->blocksize = blocksize; - - logout("Established connection with NBD server\n"); - return 0; -} - -static void nbd_teardown_connection(BlockDriverState *bs) -{ - BDRVNBDState *s = bs->opaque; - struct nbd_request request; - - request.type = NBD_CMD_DISC; - request.from = 0; - request.len = 0; - nbd_send_request(s->sock, &request); - - qemu_aio_set_fd_handler(s->sock, NULL, NULL, NULL); - closesocket(s->sock); + return sock; } static int nbd_open(BlockDriverState *bs, QDict *options, int flags, Error **errp) { BDRVNBDState *s = bs->opaque; - int result; - - qemu_co_mutex_init(&s->send_mutex); - qemu_co_mutex_init(&s->free_sema); + char *export = NULL; + int result, sock; /* Pop the config into our state object. Exit if invalid. */ - result = nbd_config(s, options); + result = nbd_config(s, options, &export); if (result != 0) { return result; } @@ -471,172 +265,64 @@ static int nbd_open(BlockDriverState *bs, QDict *options, int flags, /* establish TCP connection, return error if it fails * TODO: Configurable retry-until-timeout behaviour. */ - result = nbd_establish_connection(bs); - - return result; -} - -static int nbd_co_readv_1(BlockDriverState *bs, int64_t sector_num, - int nb_sectors, QEMUIOVector *qiov, - int offset) -{ - BDRVNBDState *s = bs->opaque; - struct nbd_request request; - struct nbd_reply reply; - ssize_t ret; - - request.type = NBD_CMD_READ; - request.from = sector_num * 512; - request.len = nb_sectors * 512; - - nbd_coroutine_start(s, &request); - ret = nbd_co_send_request(s, &request, NULL, 0); - if (ret < 0) { - reply.error = -ret; - } else { - nbd_co_receive_reply(s, &request, &reply, qiov, offset); - } - nbd_coroutine_end(s, &request); - return -reply.error; - -} - -static int nbd_co_writev_1(BlockDriverState *bs, int64_t sector_num, - int nb_sectors, QEMUIOVector *qiov, - int offset) -{ - BDRVNBDState *s = bs->opaque; - struct nbd_request request; - struct nbd_reply reply; - ssize_t ret; - - request.type = NBD_CMD_WRITE; - if (!bdrv_enable_write_cache(bs) && (s->nbdflags & NBD_FLAG_SEND_FUA)) { - request.type |= NBD_CMD_FLAG_FUA; + sock = nbd_establish_connection(bs); + if (sock < 0) { + return sock; } - request.from = sector_num * 512; - request.len = nb_sectors * 512; - - nbd_coroutine_start(s, &request); - ret = nbd_co_send_request(s, &request, qiov, offset); - if (ret < 0) { - reply.error = -ret; - } else { - nbd_co_receive_reply(s, &request, &reply, NULL, 0); - } - nbd_coroutine_end(s, &request); - return -reply.error; + /* NBD handshake */ + result = nbd_client_session_init(&s->client, bs, sock, export); + g_free(export); + return result; } -/* qemu-nbd has a limit of slightly less than 1M per request. Try to - * remain aligned to 4K. */ -#define NBD_MAX_SECTORS 2040 - static int nbd_co_readv(BlockDriverState *bs, int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) { - int offset = 0; - int ret; - while (nb_sectors > NBD_MAX_SECTORS) { - ret = nbd_co_readv_1(bs, sector_num, NBD_MAX_SECTORS, qiov, offset); - if (ret < 0) { - return ret; - } - offset += NBD_MAX_SECTORS * 512; - sector_num += NBD_MAX_SECTORS; - nb_sectors -= NBD_MAX_SECTORS; - } - return nbd_co_readv_1(bs, sector_num, nb_sectors, qiov, offset); + BDRVNBDState *s = bs->opaque; + + return nbd_client_session_co_readv(&s->client, sector_num, + nb_sectors, qiov); } static int nbd_co_writev(BlockDriverState *bs, int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) { - int offset = 0; - int ret; - while (nb_sectors > NBD_MAX_SECTORS) { - ret = nbd_co_writev_1(bs, sector_num, NBD_MAX_SECTORS, qiov, offset); - if (ret < 0) { - return ret; - } - offset += NBD_MAX_SECTORS * 512; - sector_num += NBD_MAX_SECTORS; - nb_sectors -= NBD_MAX_SECTORS; - } - return nbd_co_writev_1(bs, sector_num, nb_sectors, qiov, offset); + BDRVNBDState *s = bs->opaque; + + return nbd_client_session_co_writev(&s->client, sector_num, + nb_sectors, qiov); } static int nbd_co_flush(BlockDriverState *bs) { BDRVNBDState *s = bs->opaque; - struct nbd_request request; - struct nbd_reply reply; - ssize_t ret; - - if (!(s->nbdflags & NBD_FLAG_SEND_FLUSH)) { - return 0; - } - - request.type = NBD_CMD_FLUSH; - if (s->nbdflags & NBD_FLAG_SEND_FUA) { - request.type |= NBD_CMD_FLAG_FUA; - } - - request.from = 0; - request.len = 0; - nbd_coroutine_start(s, &request); - ret = nbd_co_send_request(s, &request, NULL, 0); - if (ret < 0) { - reply.error = -ret; - } else { - nbd_co_receive_reply(s, &request, &reply, NULL, 0); - } - nbd_coroutine_end(s, &request); - return -reply.error; + return nbd_client_session_co_flush(&s->client); } static int nbd_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors) { BDRVNBDState *s = bs->opaque; - struct nbd_request request; - struct nbd_reply reply; - ssize_t ret; - if (!(s->nbdflags & NBD_FLAG_SEND_TRIM)) { - return 0; - } - request.type = NBD_CMD_TRIM; - request.from = sector_num * 512; - request.len = nb_sectors * 512; - - nbd_coroutine_start(s, &request); - ret = nbd_co_send_request(s, &request, NULL, 0); - if (ret < 0) { - reply.error = -ret; - } else { - nbd_co_receive_reply(s, &request, &reply, NULL, 0); - } - nbd_coroutine_end(s, &request); - return -reply.error; + return nbd_client_session_co_discard(&s->client, sector_num, + nb_sectors); } static void nbd_close(BlockDriverState *bs) { BDRVNBDState *s = bs->opaque; - g_free(s->export_name); - qemu_opts_del(s->socket_opts); - nbd_teardown_connection(bs); + qemu_opts_del(s->socket_opts); + nbd_client_session_close(&s->client); } static int64_t nbd_getlength(BlockDriverState *bs) { BDRVNBDState *s = bs->opaque; - return s->size; + return s->client.size; } static BlockDriver bdrv_nbd = { @@ -1523,7 +1523,7 @@ static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, } void qmp_change_blockdev(const char *device, const char *filename, - bool has_format, const char *format, Error **errp) + const char *format, Error **errp) { BlockDriverState *bs; BlockDriver *drv = NULL; diff --git a/hw/display/qxl.c b/hw/display/qxl.c index efdefd6..e4f172e 100644 --- a/hw/display/qxl.c +++ b/hw/display/qxl.c @@ -1144,8 +1144,14 @@ static void qxl_soft_reset(PCIQXLDevice *d) static void qxl_hard_reset(PCIQXLDevice *d, int loadvm) { + bool startstop = qemu_spice_display_is_running(&d->ssd); + trace_qxl_hard_reset(d->id, loadvm); + if (startstop) { + qemu_spice_display_stop(); + } + qxl_spice_reset_cursor(d); qxl_spice_reset_image_cache(d); qxl_reset_surfaces(d); @@ -1159,6 +1165,10 @@ static void qxl_hard_reset(PCIQXLDevice *d, int loadvm) } qemu_spice_create_host_memslot(&d->ssd); qxl_soft_reset(d); + + if (startstop) { + qemu_spice_display_start(); + } } static void qxl_reset_handler(DeviceState *dev) diff --git a/include/sysemu/blockdev.h b/include/sysemu/blockdev.h index 1082091..134712b 100644 --- a/include/sysemu/blockdev.h +++ b/include/sysemu/blockdev.h @@ -64,7 +64,7 @@ DriveInfo *drive_init(QemuOpts *arg, BlockInterfaceType block_default_type); DriveInfo *add_init_drive(const char *opts); void qmp_change_blockdev(const char *device, const char *filename, - bool has_format, const char *format, Error **errp); + const char *format, Error **errp); void do_commit(Monitor *mon, const QDict *qdict); int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data); #endif diff --git a/include/sysemu/char.h b/include/sysemu/char.h index ad101d9..b81a6ff 100644 --- a/include/sysemu/char.h +++ b/include/sysemu/char.h @@ -69,6 +69,7 @@ struct CharDriverState { void (*chr_accept_input)(struct CharDriverState *chr); void (*chr_set_echo)(struct CharDriverState *chr, bool echo); void (*chr_set_fe_open)(struct CharDriverState *chr, int fe_open); + void (*chr_fe_event)(struct CharDriverState *chr, int event); void *opaque; char *label; char *filename; @@ -138,6 +139,15 @@ void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo); void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open); /** + * @qemu_chr_fe_event: + * + * Send an event from the front end to the back end. + * + * @event the event to send + */ +void qemu_chr_fe_event(CharDriverState *s, int event); + +/** * @qemu_chr_fe_printf: * * Write to a character backend using a printf style interface. diff --git a/include/ui/qemu-spice.h b/include/ui/qemu-spice.h index 86c75c7..a93b4b2 100644 --- a/include/ui/qemu-spice.h +++ b/include/ui/qemu-spice.h @@ -18,6 +18,8 @@ #ifndef QEMU_SPICE_H #define QEMU_SPICE_H +#include "config-host.h" + #ifdef CONFIG_SPICE #include <spice.h> diff --git a/libcacard/vscclient.c b/libcacard/vscclient.c index f1d46d3..24f7088 100644 --- a/libcacard/vscclient.c +++ b/libcacard/vscclient.c @@ -58,7 +58,7 @@ static QemuMutex socket_to_send_lock; static guint socket_tag; static void -update_socket_watch(gboolean out); +update_socket_watch(void); static gboolean do_socket_send(GIOChannel *source, @@ -80,7 +80,7 @@ do_socket_send(GIOChannel *source, g_byte_array_remove_range(socket_to_send, 0, bw); if (socket_to_send->len == 0) { - update_socket_watch(FALSE); + update_socket_watch(); return FALSE; } return TRUE; @@ -89,7 +89,7 @@ do_socket_send(GIOChannel *source, static gboolean socket_prepare_sending(gpointer user_data) { - update_socket_watch(TRUE); + update_socket_watch(); return FALSE; } @@ -440,8 +440,10 @@ do_socket(GIOChannel *source, } static void -update_socket_watch(gboolean out) +update_socket_watch(void) { + gboolean out = socket_to_send->len > 0; + if (socket_tag != 0) { g_source_remove(socket_tag); } @@ -443,7 +443,6 @@ int nbd_receive_negotiate(int csock, const char *name, uint32_t *flags, TRACE("Receiving negotiation."); - qemu_set_block(csock); rc = -EINVAL; if (read_sync(csock, buf, 8) != 8) { @@ -558,7 +557,6 @@ int nbd_receive_negotiate(int csock, const char *name, uint32_t *flags, rc = 0; fail: - qemu_set_nonblock(csock); return rc; } diff --git a/qemu-char.c b/qemu-char.c index e00f84c..418dc69 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -3353,6 +3353,13 @@ void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open) } } +void qemu_chr_fe_event(struct CharDriverState *chr, int event) +{ + if (chr->chr_fe_event) { + chr->chr_fe_event(chr, event); + } +} + int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond, GIOFunc func, void *user_data) { @@ -400,7 +400,7 @@ void qmp_change(const char *device, const char *target, if (strcmp(device, "vnc") == 0) { qmp_change_vnc(target, has_arg, arg, err); } else { - qmp_change_blockdev(device, target, has_arg, arg, err); + qmp_change_blockdev(device, target, arg, err); } } diff --git a/spice-qemu-char.c b/spice-qemu-char.c index 6d147a7..16439c5 100644 --- a/spice-qemu-char.c +++ b/spice-qemu-char.c @@ -11,7 +11,6 @@ typedef struct SpiceCharDriver { CharDriverState* chr; SpiceCharDeviceInstance sin; - char *subtype; bool active; bool blocked; const uint8_t *datapos; @@ -223,6 +222,15 @@ static void spice_chr_set_fe_open(struct CharDriverState *chr, int fe_open) } } +static void spice_chr_fe_event(struct CharDriverState *chr, int event) +{ +#if SPICE_SERVER_VERSION >= 0x000c02 + SpiceCharDriver *s = chr->opaque; + + spice_server_port_event(&s->sin, event); +#endif +} + static void print_allowed_subtypes(void) { const char** psubtype; @@ -256,6 +264,7 @@ static CharDriverState *chr_open(const char *subtype) chr->chr_close = spice_chr_close; chr->chr_set_fe_open = spice_chr_set_fe_open; chr->explicit_be_open = true; + chr->chr_fe_event = spice_chr_fe_event; QLIST_INSERT_HEAD(&spice_chars, s, next); diff --git a/ui/spice-core.c b/ui/spice-core.c index e4d533d..4cce3b3 100644 --- a/ui/spice-core.c +++ b/ui/spice-core.c @@ -47,6 +47,7 @@ static const char *auth = "spice"; static char *auth_passwd; static time_t auth_expires = TIME_MAX; static int spice_migration_completed; +static int spice_display_is_running; int using_spice = 0; static QemuThread me; @@ -622,9 +623,7 @@ static void vm_change_state_handler(void *opaque, int running, { if (running) { qemu_spice_display_start(); - spice_server_vm_start(spice_server); } else { - spice_server_vm_stop(spice_server); qemu_spice_display_stop(); } } @@ -776,6 +775,8 @@ void qemu_spice_init(void) if (str) { int streaming_video = parse_stream_video(str); spice_server_set_streaming_video(spice_server, streaming_video); + } else { + spice_server_set_streaming_video(spice_server, SPICE_STREAM_VIDEO_OFF); } spice_server_set_agent_mouse @@ -902,6 +903,23 @@ int qemu_spice_display_add_client(int csock, int skipauth, int tls) } } +void qemu_spice_display_start(void) +{ + spice_display_is_running = true; + spice_server_vm_start(spice_server); +} + +void qemu_spice_display_stop(void) +{ + spice_server_vm_stop(spice_server); + spice_display_is_running = false; +} + +int qemu_spice_display_is_running(SimpleSpiceDisplay *ssd) +{ + return spice_display_is_running; +} + static void spice_register_config(void) { qemu_add_opts(&qemu_spice_opts); diff --git a/ui/spice-display.c b/ui/spice-display.c index f23a318..9bb42f1 100644 --- a/ui/spice-display.c +++ b/ui/spice-display.c @@ -126,23 +126,6 @@ void qemu_spice_wakeup(SimpleSpiceDisplay *ssd) spice_qxl_wakeup(&ssd->qxl); } -static int spice_display_is_running; - -void qemu_spice_display_start(void) -{ - spice_display_is_running = true; -} - -void qemu_spice_display_stop(void) -{ - spice_display_is_running = false; -} - -int qemu_spice_display_is_running(SimpleSpiceDisplay *ssd) -{ - return spice_display_is_running; -} - static void qemu_spice_create_one_update(SimpleSpiceDisplay *ssd, QXLRect *rect) { |
