Use QIOChannel, QIOChannelSocket and QIONetListener.
This allows net/stream to use all the available parameters provided by
SocketAddress.
Signed-off-by: Laurent Vivier <lviv...@redhat.com>
---
net/stream.c | 481 +++++++++++++++++-------------------------------
qemu-options.hx | 4 +-
2 files changed, 171 insertions(+), 314 deletions(-)
diff --git a/net/stream.c b/net/stream.c
index 02967c284efc..9b50a32531a9 100644
--- a/net/stream.c
+++ b/net/stream.c
@@ -35,48 +35,36 @@
#include "qemu/iov.h"
#include "qemu/main-loop.h"
#include "qemu/cutils.h"
+#include "io/channel.h"
+#include "io/channel-socket.h"
+#include "io/net-listener.h"
typedef struct NetStreamState {
NetClientState nc;
- int listen_fd;
- int fd;
+ QIOChannel *listen_ioc;
+ QIONetListener *listener;
+ QIOChannel *ioc;
+ guint ioc_read_tag;
+ guint ioc_write_tag;
SocketReadState rs;
unsigned int send_index; /* number of bytes sent*/
- bool read_poll; /* waiting to receive data? */
- bool write_poll; /* waiting to transmit data? */
} NetStreamState;
-static void net_stream_send(void *opaque);
-static void net_stream_accept(void *opaque);
-static void net_stream_writable(void *opaque);
+static void net_stream_listen(QIONetListener *listener,
+ QIOChannelSocket *cioc,
+ void *opaque);
-static void net_stream_update_fd_handler(NetStreamState *s)
+static gboolean net_stream_writable(QIOChannel *ioc,
+ GIOCondition condition,
+ gpointer data)
{
- qemu_set_fd_handler(s->fd,
- s->read_poll ? net_stream_send : NULL,
- s->write_poll ? net_stream_writable : NULL,
- s);
-}
+ NetStreamState *s = data;
-static void net_stream_read_poll(NetStreamState *s, bool enable)
-{
- s->read_poll = enable;
- net_stream_update_fd_handler(s);
-}
-
-static void net_stream_write_poll(NetStreamState *s, bool enable)
-{
- s->write_poll = enable;
- net_stream_update_fd_handler(s);
-}
-
-static void net_stream_writable(void *opaque)
-{
- NetStreamState *s = opaque;
-
- net_stream_write_poll(s, false);
+ s->ioc_write_tag = 0;
qemu_flush_queued_packets(&s->nc);
+
+ return G_SOURCE_REMOVE;
}
static ssize_t net_stream_receive(NetClientState *nc, const uint8_t *buf,
@@ -93,13 +81,16 @@ static ssize_t net_stream_receive(NetClientState *nc, const
uint8_t *buf,
.iov_len = size,
},
};
+ struct iovec local_iov[2];
+ unsigned int nlocal_iov;
size_t remaining;
ssize_t ret;
- remaining = iov_size(iov, 2) - s->send_index;
- ret = iov_send(s->fd, iov, 2, s->send_index, remaining);
- if (ret == -1 && errno == EAGAIN) {
+ remaining = iov_size(iov, 2) - s->send_index;
+ nlocal_iov = iov_copy(local_iov, 2, iov, 2, s->send_index, remaining);
+ ret = qio_channel_writev(s->ioc, local_iov, nlocal_iov, NULL);
+ if (ret == QIO_CHANNEL_ERR_BLOCK) {
ret = 0; /* handled further down */
}
if (ret == -1) {
@@ -108,19 +99,25 @@ static ssize_t net_stream_receive(NetClientState *nc,
const uint8_t *buf,
}
if (ret < (ssize_t)remaining) {
s->send_index += ret;
- net_stream_write_poll(s, true);
+ s->ioc_write_tag = qio_channel_add_watch(s->ioc, G_IO_OUT,
+ net_stream_writable, s, NULL);
return 0;
}
s->send_index = 0;
return size;
}
+static gboolean net_stream_send(QIOChannel *ioc,
+ GIOCondition condition,
+ gpointer data);
+
static void net_stream_send_completed(NetClientState *nc, ssize_t len)
{
NetStreamState *s = DO_UPCAST(NetStreamState, nc, nc);
- if (!s->read_poll) {
- net_stream_read_poll(s, true);
+ if (!s->ioc_read_tag) {
+ s->ioc_read_tag = qio_channel_add_watch(s->ioc, G_IO_IN,
+ net_stream_send, s, NULL);
}
}
@@ -131,19 +128,24 @@ static void net_stream_rs_finalize(SocketReadState *rs)
if (qemu_send_packet_async(&s->nc, rs->buf,
rs->packet_len,
net_stream_send_completed) == 0) {
- net_stream_read_poll(s, false);
+ if (s->ioc_read_tag) {
+ g_source_remove(s->ioc_read_tag);
+ s->ioc_read_tag = 0;
+ }
}
}
-static void net_stream_send(void *opaque)
+static gboolean net_stream_send(QIOChannel *ioc,
+ GIOCondition condition,
+ gpointer data)
{
- NetStreamState *s = opaque;
+ NetStreamState *s = data;
int size;
int ret;
- uint8_t buf1[NET_BUFSIZE];
- const uint8_t *buf;
+ char buf1[NET_BUFSIZE];
+ const char *buf;
- size = recv(s->fd, buf1, sizeof(buf1), 0);
+ size = qio_channel_read(s->ioc, buf1, sizeof(buf1), NULL);
if (size < 0) {
if (errno != EWOULDBLOCK) {
goto eoc;
@@ -151,51 +153,63 @@ static void net_stream_send(void *opaque)
} else if (size == 0) {
/* end of connection */
eoc:
- net_stream_read_poll(s, false);
- net_stream_write_poll(s, false);
- if (s->listen_fd != -1) {
- qemu_set_fd_handler(s->listen_fd, net_stream_accept, NULL, s);
+ s->ioc_read_tag = 0;
+ if (s->ioc_write_tag) {
+ g_source_remove(s->ioc_write_tag);
+ s->ioc_write_tag = 0;
}
- closesocket(s->fd);
+ if (s->listener) {
+ qio_net_listener_set_client_func(s->listener, net_stream_listen,
+ s, NULL);
+ }
+ object_unref(OBJECT(s->ioc));
+ s->ioc = NULL;
- s->fd = -1;
net_socket_rs_init(&s->rs, net_stream_rs_finalize, false);
s->nc.link_down = true;
memset(s->nc.info_str, 0, sizeof(s->nc.info_str));
- return;
+ return G_SOURCE_REMOVE;
}
buf = buf1;
- ret = net_fill_rstate(&s->rs, buf, size);
+ ret = net_fill_rstate(&s->rs, (const uint8_t *)buf, size);
if (ret == -1) {
goto eoc;
}
+
+ return G_SOURCE_CONTINUE;
}
static void net_stream_cleanup(NetClientState *nc)
{
NetStreamState *s = DO_UPCAST(NetStreamState, nc, nc);
- if (s->fd != -1) {
- net_stream_read_poll(s, false);
- net_stream_write_poll(s, false);
- close(s->fd);
- s->fd = -1;
+ if (s->ioc) {
+ if (QIO_CHANNEL_SOCKET(s->ioc)->fd != -1) {
+ if (s->ioc_read_tag) {
+ g_source_remove(s->ioc_read_tag);
+ s->ioc_read_tag = 0;
+ }
+ if (s->ioc_write_tag) {
+ g_source_remove(s->ioc_write_tag);
+ s->ioc_write_tag = 0;
+ }
+ }
+ object_unref(OBJECT(s->ioc));
+ s->ioc = NULL;
}
- if (s->listen_fd != -1) {
- qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
- closesocket(s->listen_fd);
- s->listen_fd = -1;
+ if (s->listen_ioc) {
+ if (s->listener) {
+ qio_net_listener_disconnect(s->listener);
+ object_unref(OBJECT(s->listener));
+ s->listener = NULL;
+ }
+ object_unref(OBJECT(s->listen_ioc));
+ s->listen_ioc = NULL;
}
}
-static void net_stream_connect(void *opaque)
-{
- NetStreamState *s = opaque;
- net_stream_read_poll(s, true);
-}
-
static NetClientInfo net_stream_info = {
.type = NET_CLIENT_DRIVER_STREAM,
.size = sizeof(NetStreamState),
@@ -203,77 +217,68 @@ static NetClientInfo net_stream_info = {
.cleanup = net_stream_cleanup,
};
-static NetStreamState *net_stream_fd_init_stream(NetClientState *peer,
- const char *model,
- const char *name,
- int fd, int is_connected)
+static void net_stream_listen(QIONetListener *listener,
+ QIOChannelSocket *cioc,
+ void *opaque)
{
- NetClientState *nc;
- NetStreamState *s;
-
- nc = qemu_new_net_client(&net_stream_info, peer, model, name);
+ NetStreamState *s = opaque;
+ SocketAddress *addr;
+ char *uri;
- snprintf(nc->info_str, sizeof(nc->info_str), "fd=%d", fd);
+ object_ref(OBJECT(cioc));
- s = DO_UPCAST(NetStreamState, nc, nc);
+ qio_net_listener_set_client_func(s->listener, NULL, s, NULL);
- s->fd = fd;
- s->listen_fd = -1;
- net_socket_rs_init(&s->rs, net_stream_rs_finalize, false);
+ s->ioc = QIO_CHANNEL(cioc);
+ qio_channel_set_name(s->ioc, "stream-server");
+ s->nc.link_down = false;
- /* Disable Nagle algorithm on TCP sockets to reduce latency */
- socket_set_nodelay(fd);
+ s->ioc_read_tag = qio_channel_add_watch(s->ioc, G_IO_IN, net_stream_send,
+ s, NULL);
- if (is_connected) {
- net_stream_connect(s);
+ if (cioc->localAddr.ss_family == AF_UNIX) {
+ addr = qio_channel_socket_get_local_address(cioc, NULL);
} else {
- qemu_set_fd_handler(s->fd, NULL, net_stream_connect, s);
+ addr = qio_channel_socket_get_remote_address(cioc, NULL);
}
- return s;
+ g_assert(addr != NULL);
+ uri = socket_uri(addr);
+ pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), uri);
+ g_free(uri);
+ qapi_free_SocketAddress(addr);
+
}
-static void net_stream_accept(void *opaque)
+static void net_stream_server_listening(QIOTask *task, gpointer opaque)
{
NetStreamState *s = opaque;
- struct sockaddr_storage saddr;
- socklen_t len;
- int fd;
-
- for (;;) {
- len = sizeof(saddr);
- fd = qemu_accept(s->listen_fd, (struct sockaddr *)&saddr, &len);
- if (fd < 0 && errno != EINTR) {
- return;
- } else if (fd >= 0) {
- qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
- break;
- }
- }
-
- s->fd = fd;
- s->nc.link_down = false;
- net_stream_connect(s);
- switch (saddr.ss_family) {
- case AF_INET: {
- struct sockaddr_in *saddr_in = (struct sockaddr_in *)&saddr;
+ QIOChannelSocket *listen_sioc = QIO_CHANNEL_SOCKET(s->listen_ioc);
+ SocketAddress *addr;
+ int ret;
- snprintf(s->nc.info_str, sizeof(s->nc.info_str),
- "connection from %s:%d",
- inet_ntoa(saddr_in->sin_addr), ntohs(saddr_in->sin_port));
- break;
+ if (listen_sioc->fd < 0) {
+ snprintf(s->nc.info_str, sizeof(s->nc.info_str), "connection error");
+ return;
}
- case AF_UNIX: {
- struct sockaddr_un saddr_un;
- len = sizeof(saddr_un);
- getsockname(s->listen_fd, (struct sockaddr *)&saddr_un, &len);
+ addr = qio_channel_socket_get_local_address(listen_sioc, NULL);
+ g_assert(addr != NULL);
+ ret = qemu_socket_try_set_nonblock(listen_sioc->fd);
+ if (addr->type == SOCKET_ADDRESS_TYPE_FD && ret < 0) {
snprintf(s->nc.info_str, sizeof(s->nc.info_str),
- "connect from %s", saddr_un.sun_path);
- break;
- }
- default:
- g_assert_not_reached();
+ "can't use file descriptor %s (errno %d)",
+ addr->u.fd.str, -ret);
+ return;
}
+ g_assert(ret == 0);
+ qapi_free_SocketAddress(addr);
+
+ s->nc.link_down = true;
+ s->listener = qio_net_listener_new();
+
+ net_socket_rs_init(&s->rs, net_stream_rs_finalize, false);
+ qio_net_listener_set_client_func(s->listener, net_stream_listen, s, NULL);
+ qio_net_listener_add(s->listener, listen_sioc);
}
static int net_stream_server_init(NetClientState *peer,
@@ -284,105 +289,55 @@ static int net_stream_server_init(NetClientState *peer,
{
NetClientState *nc;
NetStreamState *s;
- int fd, ret;
+ QIOChannelSocket *listen_sioc = qio_channel_socket_new();
- switch (addr->type) {
- case SOCKET_ADDRESS_TYPE_INET: {
- struct sockaddr_in saddr_in;
+ nc = qemu_new_net_client(&net_stream_info, peer, model, name);
+ s = DO_UPCAST(NetStreamState, nc, nc);
- if (convert_host_port(&saddr_in, addr->u.inet.host, addr->u.inet.port,
- errp) < 0) {
- return -1;
- }
+ s->listen_ioc = QIO_CHANNEL(listen_sioc);
+ qio_channel_socket_listen_async(listen_sioc, addr, 0,
+ net_stream_server_listening, s,
+ NULL, NULL);
- fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
- if (fd < 0) {
- error_setg_errno(errp, errno, "can't create stream socket");
- return -1;
- }
- qemu_socket_set_nonblock(fd);
+ return 0;
+}
- socket_set_fast_reuse(fd);
+static void net_stream_client_connected(QIOTask *task, gpointer opaque)
+{
+ NetStreamState *s = opaque;
+ QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(s->ioc);
+ SocketAddress *addr;
+ gchar *uri;
+ int ret;
- ret = bind(fd, (struct sockaddr *)&saddr_in, sizeof(saddr_in));
- if (ret < 0) {
- error_setg_errno(errp, errno, "can't bind ip=%s to socket",
- inet_ntoa(saddr_in.sin_addr));
- closesocket(fd);
- return -1;
- }
- break;
+ if (sioc->fd < 0) {
+ snprintf(s->nc.info_str, sizeof(s->nc.info_str), "connection error");
+ return;
}
- case SOCKET_ADDRESS_TYPE_UNIX: {
- struct sockaddr_un saddr_un;
-
- ret = unlink(addr->u.q_unix.path);
- if (ret < 0 && errno != ENOENT) {
- error_setg_errno(errp, errno, "failed to unlink socket %s",
- addr->u.q_unix.path);
- return -1;
- }
-
- saddr_un.sun_family = PF_UNIX;
- ret = snprintf(saddr_un.sun_path, sizeof(saddr_un.sun_path), "%s",
- addr->u.q_unix.path);
- if (ret < 0 || ret >= sizeof(saddr_un.sun_path)) {
- error_setg(errp, "UNIX socket path '%s' is too long",
- addr->u.q_unix.path);
- error_append_hint(errp, "Path must be less than %zu bytes\n",
- sizeof(saddr_un.sun_path));
- return -1;
- }
- fd = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
- if (fd < 0) {
- error_setg_errno(errp, errno, "can't create stream socket");
- return -1;
- }
- qemu_socket_set_nonblock(fd);
-
- ret = bind(fd, (struct sockaddr *)&saddr_un, sizeof(saddr_un));
- if (ret < 0) {
- error_setg_errno(errp, errno, "can't create socket with path: %s",
- saddr_un.sun_path);
- closesocket(fd);
- return -1;
- }
- break;
- }
- case SOCKET_ADDRESS_TYPE_FD:
- fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp);
- if (fd == -1) {
- return -1;
- }
- ret = qemu_socket_try_set_nonblock(fd);
- if (ret < 0) {
- error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d",
- name, fd);
- return -1;
- }
- break;
- default:
- error_setg(errp, "only support inet or fd type");
- return -1;
- }
+ addr = qio_channel_socket_get_remote_address(sioc, NULL);
+ g_assert(addr != NULL);
+ uri = socket_uri(addr);
+ pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), uri);
+ g_free(uri);
- ret = listen(fd, 0);
- if (ret < 0) {
- error_setg_errno(errp, errno, "can't listen on socket");
- closesocket(fd);
- return -1;
+ ret = qemu_socket_try_set_nonblock(sioc->fd);
+ if (addr->type == SOCKET_ADDRESS_TYPE_FD && ret < 0) {
+ snprintf(s->nc.info_str, sizeof(s->nc.info_str),
+ "can't use file descriptor %s (errno %d)",
+ addr->u.fd.str, -ret);
+ return;
}
+ g_assert(ret == 0);
+ qapi_free_SocketAddress(addr);
- nc = qemu_new_net_client(&net_stream_info, peer, model, name);
- s = DO_UPCAST(NetStreamState, nc, nc);
- s->fd = -1;
- s->listen_fd = fd;
- s->nc.link_down = true;
net_socket_rs_init(&s->rs, net_stream_rs_finalize, false);
- qemu_set_fd_handler(s->listen_fd, net_stream_accept, NULL, s);
- return 0;
+ /* Disable Nagle algorithm on TCP sockets to reduce latency */
+ qio_channel_set_delay(s->ioc, false);
+
+ s->ioc_read_tag = qio_channel_add_watch(s->ioc, G_IO_IN, net_stream_send,
+ s, NULL);
}
static int net_stream_client_init(NetClientState *peer,
@@ -392,115 +347,17 @@ static int net_stream_client_init(NetClientState *peer,
Error **errp)
{
NetStreamState *s;
- int fd, connected, ret;
- gchar *info_str;
-
- switch (addr->type) {
- case SOCKET_ADDRESS_TYPE_INET: {
- struct sockaddr_in saddr_in;
-
- if (convert_host_port(&saddr_in, addr->u.inet.host, addr->u.inet.port,
- errp) < 0) {
- return -1;
- }
-
- fd = qemu_socket(PF_INET, SOCK_STREAM, 0);
- if (fd < 0) {
- error_setg_errno(errp, errno, "can't create stream socket");
- return -1;
- }
- qemu_socket_set_nonblock(fd);
-
- connected = 0;
- for (;;) {
- ret = connect(fd, (struct sockaddr *)&saddr_in, sizeof(saddr_in));
- if (ret < 0) {
- if (errno == EINTR || errno == EWOULDBLOCK) {
- /* continue */
- } else if (errno == EINPROGRESS ||
- errno == EALREADY) {
- break;
- } else {
- error_setg_errno(errp, errno, "can't connect socket");
- closesocket(fd);
- return -1;
- }
- } else {
- connected = 1;
- break;
- }
- }
- info_str = g_strdup_printf("connect to %s:%d",
- inet_ntoa(saddr_in.sin_addr),
- ntohs(saddr_in.sin_port));
- break;
- }
- case SOCKET_ADDRESS_TYPE_UNIX: {
- struct sockaddr_un saddr_un;
-
- saddr_un.sun_family = PF_UNIX;
- ret = snprintf(saddr_un.sun_path, sizeof(saddr_un.sun_path), "%s",
- addr->u.q_unix.path);
- if (ret < 0 || ret >= sizeof(saddr_un.sun_path)) {
- error_setg(errp, "UNIX socket path '%s' is too long",
- addr->u.q_unix.path);
- error_append_hint(errp, "Path must be less than %zu bytes\n",
- sizeof(saddr_un.sun_path));
- return -1;
- }
+ NetClientState *nc;
+ QIOChannelSocket *sioc = qio_channel_socket_new();
- fd = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
- if (fd < 0) {
- error_setg_errno(errp, errno, "can't create stream socket");
- return -1;
- }
- qemu_socket_set_nonblock(fd);
-
- connected = 0;
- for (;;) {
- ret = connect(fd, (struct sockaddr *)&saddr_un, sizeof(saddr_un));
- if (ret < 0) {
- if (errno == EINTR || errno == EWOULDBLOCK) {
- /* continue */
- } else if (errno == EAGAIN ||
- errno == EALREADY) {
- break;
- } else {
- error_setg_errno(errp, errno, "can't connect socket");
- closesocket(fd);
- return -1;
- }
- } else {
- connected = 1;
- break;
- }
- }
- info_str = g_strdup_printf(" connect to %s", saddr_un.sun_path);
- break;
- }
- case SOCKET_ADDRESS_TYPE_FD:
- fd = monitor_fd_param(monitor_cur(), addr->u.fd.str, errp);
- if (fd == -1) {
- return -1;
- }
- ret = qemu_socket_try_set_nonblock(fd);
- if (ret < 0) {
- error_setg_errno(errp, -ret, "%s: Can't use file descriptor %d",
- name, fd);
- return -1;
- }
- connected = 1;
- info_str = g_strdup_printf("connect to fd %d", fd);
- break;
- default:
- error_setg(errp, "only support inet, unix or fd type");
- return -1;
- }
+ nc = qemu_new_net_client(&net_stream_info, peer, model, name);
+ s = DO_UPCAST(NetStreamState, nc, nc);
- s = net_stream_fd_init_stream(peer, model, name, fd, connected);
+ s->ioc = QIO_CHANNEL(sioc);
- pstrcpy(s->nc.info_str, sizeof(s->nc.info_str), info_str);
- g_free(info_str);
+ qio_channel_socket_connect_async(sioc, addr,
+ net_stream_client_connected, s,
+ NULL, NULL);
return 0;
}
diff --git a/qemu-options.hx b/qemu-options.hx
index 5adb2e688c73..1b3a053b5df8 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2734,8 +2734,8 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev,
"-netdev socket,id=str[,fd=h][,udp=host:port][,localaddr=host:port]\n"
" configure a network backend to connect to another
network\n"
" using an UDP tunnel\n"
- "-netdev
stream,id=str[,server=on|off],addr.type=inet,addr.host=host,addr.port=port\n"
- "-netdev stream,id=str[,server=on|off],addr.type=unix,addr.path=path\n"
+ "-netdev
stream,id=str[,server=on|off],addr.type=inet,addr.host=host,addr.port=port[,to=maxport][,numeric=on|off][,keep-alive=on|off][,mptcp=on|off][,addr.ipv4=on|off][,addr.ipv6=on|off]\n"
+ "-netdev
stream,id=str[,server=on|off],addr.type=unix,addr.path=path[,abstract=on|off][,tight=on|off]\n"
"-netdev stream,id=str[,server=on|off],addr.type=fd,addr.str=h\n"
" configure a network backend to connect to another
network\n"
" using a socket connection in stream mode.\n"
--
2.37.3
