* [Qemu-devel] [PATCH v2 1/2] slirp: Add "query-usernet" QMP command
2018-02-26 7:58 [Qemu-devel] [PATCH v2 0/2] slirp: Add query-usernet QMP command Fam Zheng
@ 2018-02-26 7:58 ` Fam Zheng
2018-03-09 14:22 ` Eric Blake
2018-02-26 7:58 ` [Qemu-devel] [PATCH v2 2/2] tests: Use query-usernet instead of 'info usernet' Fam Zheng
2018-03-09 1:33 ` [Qemu-devel] [PATCH v2 0/2] slirp: Add query-usernet QMP command Fam Zheng
2 siblings, 1 reply; 6+ messages in thread
From: Fam Zheng @ 2018-02-26 7:58 UTC (permalink / raw)
To: qemu-devel
Cc: Eric Blake, Fam Zheng, Samuel Thibault, Jason Wang, Markus Armbruster
HMP "info usernet" has been available but it isn't ideal for programed
use cases. This closes the gap in QMP by adding a counterpart
"query-usernet" command. It is basically translated from
the HMP slirp_connection_info() loop, which now calls the QMP
implementation and prints the data, just like other HMP info_* commands.
The TCPS_* macros are now defined as a QAPI enum.
Signed-off-by: Fam Zheng <famz@redhat.com>
---
net/slirp.c | 26 +++++++
qapi/net.json | 201 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
slirp/libslirp.h | 1 +
slirp/misc.c | 156 +++++++++++++++++++++++++++++-------------
slirp/tcp.h | 15 -----
5 files changed, 339 insertions(+), 60 deletions(-)
diff --git a/net/slirp.c b/net/slirp.c
index 8991816bbf..415f967f99 100644
--- a/net/slirp.c
+++ b/net/slirp.c
@@ -36,6 +36,7 @@
#include "monitor/monitor.h"
#include "qemu/error-report.h"
#include "qemu/sockets.h"
+#include "slirp/slirp.h"
#include "slirp/libslirp.h"
#include "slirp/ip6.h"
#include "chardev/char-fe.h"
@@ -43,6 +44,7 @@
#include "qemu/cutils.h"
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
+#include "qmp-commands.h"
static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
{
@@ -864,6 +866,30 @@ static int slirp_guestfwd(SlirpState *s, const char *config_str,
return -1;
}
+UsernetInfoList *qmp_query_usernet(Error **errp)
+{
+ SlirpState *s;
+ UsernetInfoList *list = NULL;
+ UsernetInfoList **p = &list;
+
+ QTAILQ_FOREACH(s, &slirp_stacks, entry) {
+ int vlan;
+ UsernetInfoList *il = g_new0(UsernetInfoList, 1);
+ UsernetInfo *info = il->value = g_new0(UsernetInfo, 1);
+
+ info->id = g_strdup(s->nc.name);
+ if (!net_hub_id_for_client(&s->nc, &vlan)) {
+ info->vlan = vlan;
+ } else {
+ info->vlan = -1;
+ }
+ usernet_get_info(s->slirp, info);
+ *p = il;
+ p = &il->next;
+ }
+ return list;
+}
+
void hmp_info_usernet(Monitor *mon, const QDict *qdict)
{
SlirpState *s;
diff --git a/qapi/net.json b/qapi/net.json
index 1238ba5de1..26b2674ffa 100644
--- a/qapi/net.json
+++ b/qapi/net.json
@@ -706,3 +706,204 @@
##
{ 'event': 'NIC_RX_FILTER_CHANGED',
'data': { '*name': 'str', 'path': 'str' } }
+
+##
+# @TCPS:
+#
+# TCP States of a SLIRP connection.
+#
+# - States where connections are not established: none, closed, listen, syn_sent,
+# syn_received
+#
+# - States where user has closed: fin_wait_1, closing, last_ack, fin_wait_2,
+# time_wait
+#
+# - States await ACK of FIN: fin_wait_1, closing, last_ack
+#
+# 'none' state is used only when host forwarding
+#
+# Since 2.12
+#
+##
+{ 'enum': 'TCPS',
+ 'data':
+ ['closed',
+ 'listen',
+ 'syn_sent',
+ 'syn_received',
+ 'established',
+ 'close_wait',
+ 'fin_wait_1',
+ 'closing',
+ 'last_ack',
+ 'fin_wait_2',
+ 'time_wait',
+ 'none'
+ ] }
+
+##
+# @UsernetTCPConnection:
+#
+# SLIRP TCP information.
+#
+# @state: tcp connection state
+#
+# @hostfwd: whether this connection has host port forwarding
+#
+# @fd: the file descriptor of the connection
+#
+# @src_addr: source address of host port forwarding
+#
+# @src_port: source port of host port forwarding
+#
+# @dest_addr: destination address of host port forwarding
+#
+# @dest_port: destination port of host port forwarding
+#
+# @recv_buffered: number of bytes queued in the receive buffer
+#
+# @send_buffered: number of bytes queued in the send buffer
+#
+# Since: 2.12
+##
+{ 'struct': 'UsernetTCPConnection',
+ 'data': {
+ 'state': 'TCPS',
+ 'hostfwd': 'bool',
+ 'fd': 'int',
+ 'src_addr': 'str',
+ 'src_port': 'int',
+ 'dest_addr': 'str',
+ 'dest_port': 'int',
+ 'recv_buffered': 'int',
+ 'send_buffered': 'int'
+ } }
+
+##
+# @UsernetUDPConnection:
+#
+# SLIRP UDP information.
+#
+# @hostfwd: whether this connection has host port forwarding
+#
+# @expire_time_ms: time in microseconds after which this connection will expire
+#
+# @fd: the file descriptor of the connection
+#
+# @src_addr: source address of host port forwarding
+#
+# @src_port: source port of host port forwarding
+#
+# @dest_addr: destination address of host port forwarding
+#
+# @dest_port: destination port of host port forwarding
+#
+# @recv_buffered: number of bytes queued in the receive buffer
+#
+# @send_buffered: number of bytes queued in the send buffer
+#
+# Since: 2.12
+##
+{ 'struct': 'UsernetUDPConnection',
+ 'data': {
+ 'hostfwd': 'bool',
+ 'expire_time_ms': 'int',
+ 'fd': 'int',
+ 'src_addr': 'str',
+ 'src_port': 'int',
+ 'dest_addr': 'str',
+ 'dest_port': 'int',
+ 'recv_buffered': 'int',
+ 'send_buffered': 'int'
+ } }
+
+##
+# @UsernetICMPConnection:
+#
+# SLIRP ICMP information.
+#
+# @expire_time_ms: time in microseconds after which this connection will expire
+#
+# @fd: the file descriptor of the connection
+#
+# @src_addr: source address of host port forwarding
+#
+# @dest_addr: destination address of host port forwarding
+#
+# @recv_buffered: number of bytes queued in the receive buffer
+#
+# @send_buffered: number of bytes queued in the send buffer
+#
+# Since: 2.12
+##
+{ 'struct': 'UsernetICMPConnection',
+ 'data': {
+ 'expire_time_ms': 'int',
+ 'fd': 'int',
+ 'src_addr': 'str',
+ 'dest_addr': 'str',
+ 'recv_buffered': 'int',
+ 'send_buffered': 'int'
+ } }
+
+##
+# @UsernetType:
+#
+# Available netdev drivers.
+#
+# Since: 2.7
+##
+{ 'enum': 'UsernetType',
+ 'data': [ 'tcp', 'udp', 'icmp' ] }
+
+##
+# @UsernetConnection:
+#
+# SLIRP usernet connection information.
+#
+# Since: 2.12
+##
+{ 'union': 'UsernetConnection',
+ 'discriminator': 'type',
+ 'base': { 'type': 'UsernetType' },
+ 'data': {
+ 'tcp': 'UsernetTCPConnection',
+ 'udp': 'UsernetUDPConnection',
+ 'icmp': 'UsernetICMPConnection'
+ } }
+
+##
+# @UsernetInfo:
+#
+# SLIRP usernet information.
+#
+# Since: 2.12
+##
+{ 'struct': 'UsernetInfo',
+ 'data': {
+ 'id': 'str',
+ 'vlan': 'int',
+ 'connections': ['UsernetConnection']
+} }
+
+##
+# @query-usernet:
+#
+# Return SLIRP network information.
+#
+# Since: 2.11
+#
+# Example:
+#
+# -> { "execute": "query-usernet", "arguments": { } }
+# <- { "return": [
+# {
+# "promiscuous": true,
+# "name": "vnet0",
+# }
+# ]
+# }
+#
+##
+{ 'command': 'query-usernet',
+ 'returns': ['UsernetInfo'] }
diff --git a/slirp/libslirp.h b/slirp/libslirp.h
index 540b3e5903..f2b23457e2 100644
--- a/slirp/libslirp.h
+++ b/slirp/libslirp.h
@@ -37,6 +37,7 @@ int slirp_add_exec(Slirp *slirp, int do_pty, const void *args,
struct in_addr *guest_addr, int guest_port);
void slirp_connection_info(Slirp *slirp, Monitor *mon);
+void usernet_get_info(Slirp *slirp, UsernetInfo *info);
void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr,
int guest_port, const uint8_t *buf, int size);
diff --git a/slirp/misc.c b/slirp/misc.c
index 260187b6b6..78fb15c464 100644
--- a/slirp/misc.c
+++ b/slirp/misc.c
@@ -205,39 +205,28 @@ fork_exec(struct socket *so, const char *ex, int do_pty)
}
#endif
-void slirp_connection_info(Slirp *slirp, Monitor *mon)
+void usernet_get_info(Slirp *slirp, UsernetInfo *info)
{
- const char * const tcpstates[] = {
- [TCPS_CLOSED] = "CLOSED",
- [TCPS_LISTEN] = "LISTEN",
- [TCPS_SYN_SENT] = "SYN_SENT",
- [TCPS_SYN_RECEIVED] = "SYN_RCVD",
- [TCPS_ESTABLISHED] = "ESTABLISHED",
- [TCPS_CLOSE_WAIT] = "CLOSE_WAIT",
- [TCPS_FIN_WAIT_1] = "FIN_WAIT_1",
- [TCPS_CLOSING] = "CLOSING",
- [TCPS_LAST_ACK] = "LAST_ACK",
- [TCPS_FIN_WAIT_2] = "FIN_WAIT_2",
- [TCPS_TIME_WAIT] = "TIME_WAIT",
- };
struct in_addr dst_addr;
struct sockaddr_in src;
socklen_t src_len;
uint16_t dst_port;
struct socket *so;
- const char *state;
- char buf[20];
-
- monitor_printf(mon, " Protocol[State] FD Source Address Port "
- "Dest. Address Port RecvQ SendQ\n");
+ UsernetConnectionList **p_next = &info->connections;
for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) {
+ UsernetConnection *conn = g_new0(UsernetConnection, 1);
+ UsernetTCPConnection *tcp = &conn->u.tcp;
+ UsernetConnectionList *list = g_new0(UsernetConnectionList, 1);
+
+ list->value = conn;
if (so->so_state & SS_HOSTFWD) {
- state = "HOST_FORWARD";
+ tcp->hostfwd = true;
+ tcp->state = so->so_tcpcb->t_state;
} else if (so->so_tcpcb) {
- state = tcpstates[so->so_tcpcb->t_state];
+ tcp->state = so->so_tcpcb->t_state;
} else {
- state = "NONE";
+ tcp->state = TCPS_NONE;
}
if (so->so_state & (SS_HOSTFWD | SS_INCOMING)) {
src_len = sizeof(src);
@@ -250,46 +239,123 @@ void slirp_connection_info(Slirp *slirp, Monitor *mon)
dst_addr = so->so_faddr;
dst_port = so->so_fport;
}
- snprintf(buf, sizeof(buf), " TCP[%s]", state);
- monitor_printf(mon, "%-19s %3d %15s %5d ", buf, so->s,
- src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
- ntohs(src.sin_port));
- monitor_printf(mon, "%15s %5d %5d %5d\n",
- inet_ntoa(dst_addr), ntohs(dst_port),
- so->so_rcv.sb_cc, so->so_snd.sb_cc);
+ tcp->fd = so->s;
+ tcp->src_addr =
+ g_strdup(src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*");
+ tcp->src_port = ntohs(src.sin_port);
+ tcp->dest_addr = g_strdup(inet_ntoa(dst_addr));
+ tcp->dest_port = ntohs(dst_port);
+ tcp->recv_buffered = so->so_rcv.sb_cc;
+ tcp->send_buffered = so->so_snd.sb_cc;
+ *p_next = list;
+ p_next = &list->next;
}
-
for (so = slirp->udb.so_next; so != &slirp->udb; so = so->so_next) {
+ UsernetConnection *conn = g_new0(UsernetConnection, 1);
+ UsernetUDPConnection *udp = &conn->u.udp;
+ UsernetConnectionList *list = g_new0(UsernetConnectionList, 1);
+
+ list->value = conn;
if (so->so_state & SS_HOSTFWD) {
- snprintf(buf, sizeof(buf), " UDP[HOST_FORWARD]");
+ udp->hostfwd = true;
src_len = sizeof(src);
getsockname(so->s, (struct sockaddr *)&src, &src_len);
dst_addr = so->so_laddr;
dst_port = so->so_lport;
} else {
- snprintf(buf, sizeof(buf), " UDP[%d sec]",
- (so->so_expire - curtime) / 1000);
+ udp->expire_time_ms = so->so_expire - curtime;
src.sin_addr = so->so_laddr;
src.sin_port = so->so_lport;
dst_addr = so->so_faddr;
dst_port = so->so_fport;
}
- monitor_printf(mon, "%-19s %3d %15s %5d ", buf, so->s,
- src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
- ntohs(src.sin_port));
- monitor_printf(mon, "%15s %5d %5d %5d\n",
- inet_ntoa(dst_addr), ntohs(dst_port),
- so->so_rcv.sb_cc, so->so_snd.sb_cc);
+ udp->fd = so->s;
+ udp->src_addr =
+ g_strdup(src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*");
+ udp->src_port = ntohs(src.sin_port);
+ udp->dest_addr = g_strdup(inet_ntoa(dst_addr));
+ udp->dest_port = ntohs(dst_port);
+ udp->recv_buffered = so->so_rcv.sb_cc;
+ udp->send_buffered = so->so_snd.sb_cc;
+ *p_next = list;
+ p_next = &list->next;
}
for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so->so_next) {
- snprintf(buf, sizeof(buf), " ICMP[%d sec]",
- (so->so_expire - curtime) / 1000);
+ UsernetConnection *conn = g_new0(UsernetConnection, 1);
+ UsernetICMPConnection *icmp = &conn->u.icmp;
+ UsernetConnectionList *list = g_new0(UsernetConnectionList, 1);
+
+ icmp->expire_time_ms = so->so_expire - curtime;
src.sin_addr = so->so_laddr;
dst_addr = so->so_faddr;
- monitor_printf(mon, "%-19s %3d %15s - ", buf, so->s,
- src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*");
- monitor_printf(mon, "%15s - %5d %5d\n", inet_ntoa(dst_addr),
- so->so_rcv.sb_cc, so->so_snd.sb_cc);
+ icmp->fd = so->s;
+ icmp->src_addr =
+ g_strdup(src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*");
+ icmp->dest_addr = g_strdup(inet_ntoa(dst_addr));
+ icmp->recv_buffered = so->so_rcv.sb_cc;
+ icmp->send_buffered = so->so_snd.sb_cc;
+ *p_next = list;
+ p_next = &list->next;
+ }
+}
+
+
+void slirp_connection_info(Slirp *slirp, Monitor *mon)
+{
+ const char *state;
+ char buf[64];
+ UsernetInfo info = { };
+ UsernetConnectionList *cl;
+
+ monitor_printf(mon, " Protocol[State] FD Source Address Port "
+ "Dest. Address Port RecvQ SendQ\n");
+
+ usernet_get_info(slirp, &info);
+ for (cl = info.connections; cl && cl->value; cl = cl->next) {
+ UsernetConnection *conn = cl->value;
+
+ if (conn->type == USERNET_TYPE_TCP) {
+ UsernetTCPConnection *tcp = &conn->u.tcp;
+
+ if (tcp->hostfwd) {
+ state = "HOST_FORWARD";
+ } else {
+ state = TCPS_str(tcp->state);
+ }
+ snprintf(buf, sizeof(buf), " TCP[%s]", state);
+ monitor_printf(mon, "%-19s %3" PRId64 " %15s %5" PRId64 " ",
+ buf, tcp->fd,
+ tcp->src_addr, tcp->src_port);
+ monitor_printf(mon, "%15s %5" PRId64 " %5" PRId64 " %5" PRId64 "\n",
+ tcp->dest_addr, tcp->dest_port,
+ tcp->recv_buffered, tcp->send_buffered);
+ } else if (conn->type == USERNET_TYPE_UDP) {
+ UsernetUDPConnection *udp = &conn->u.udp;
+
+ if (udp->hostfwd) {
+ snprintf(buf, sizeof(buf), " UDP[HOST_FORWARD]");
+ } else {
+ snprintf(buf, sizeof(buf), " UDP[%" PRId64 " sec]",
+ udp->expire_time_ms / 1000);
+ }
+ monitor_printf(mon, "%-19s %3" PRId64 " %15s %5" PRId64 " ",
+ buf, udp->fd,
+ udp->src_addr, udp->src_port);
+ monitor_printf(mon, "%15s %5" PRId64 " %5" PRId64 " %5" PRId64 "\n",
+ udp->dest_addr, udp->dest_port,
+ udp->recv_buffered, udp->send_buffered);
+ } else {
+ UsernetICMPConnection *icmp = &conn->u.icmp;
+
+ assert(conn->type == USERNET_TYPE_ICMP);
+ snprintf(buf, sizeof(buf), " ICMP[%" PRId64 " sec]",
+ icmp->expire_time_ms / 1000);
+ monitor_printf(mon, "%-19s %3" PRId64 " %15s - ", buf, icmp->fd,
+ icmp->src_addr);
+ monitor_printf(mon, "%15s - %5" PRId64 " %5" PRId64 "\n",
+ icmp->dest_addr,
+ icmp->recv_buffered, icmp->send_buffered);
+ }
}
}
diff --git a/slirp/tcp.h b/slirp/tcp.h
index 174d3d960c..155569f380 100644
--- a/slirp/tcp.h
+++ b/slirp/tcp.h
@@ -133,21 +133,6 @@ struct tcphdr {
#define TCP_NSTATES 11
-#define TCPS_CLOSED 0 /* closed */
-#define TCPS_LISTEN 1 /* listening for connection */
-#define TCPS_SYN_SENT 2 /* active, have sent syn */
-#define TCPS_SYN_RECEIVED 3 /* have send and received syn */
-/* states < TCPS_ESTABLISHED are those where connections not established */
-#define TCPS_ESTABLISHED 4 /* established */
-#define TCPS_CLOSE_WAIT 5 /* rcvd fin, waiting for close */
-/* states > TCPS_CLOSE_WAIT are those where user has closed */
-#define TCPS_FIN_WAIT_1 6 /* have closed, sent fin */
-#define TCPS_CLOSING 7 /* closed xchd FIN; await FIN ACK */
-#define TCPS_LAST_ACK 8 /* had fin and close; await FIN ACK */
-/* states > TCPS_CLOSE_WAIT && < TCPS_FIN_WAIT_2 await ACK of FIN */
-#define TCPS_FIN_WAIT_2 9 /* have closed, fin is acked */
-#define TCPS_TIME_WAIT 10 /* in 2*msl quiet wait after close */
-
#define TCPS_HAVERCVDSYN(s) ((s) >= TCPS_SYN_RECEIVED)
#define TCPS_HAVEESTABLISHED(s) ((s) >= TCPS_ESTABLISHED)
#define TCPS_HAVERCVDFIN(s) ((s) >= TCPS_TIME_WAIT)
--
2.14.3
^ permalink raw reply related [flat|nested] 6+ messages in thread