slirp: remove Monitor dependency, return a string for info

There is nothing performance-sensitive in returning an allocated
string for info, and handling the monitor_printf() on the caller side.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>

3 files changed, 18 insertions, 14 deletions

diff --git a/net/slirp.c b/net/slirp.c
index 58d880de8d..b7319ca6b2 100644
--- a/net/slirp.c
+++ b/net/slirp.c
@@ -828,10 +828,11 @@ void hmp_info_usernet(Monitor *mon, const QDict *qdict)
     QTAILQ_FOREACH(s, &slirp_stacks, entry) {
         int id;
         bool got_hub_id = net_hub_id_for_client(&s->nc, &id) == 0;
-        monitor_printf(mon, "Hub %d (%s):\n",
+        char *info = slirp_connection_info(s->slirp);
+        monitor_printf(mon, "Hub %d (%s):\n%s",
                        got_hub_id ? id : -1,
-                       s->nc.name);
-        slirp_connection_info(s->slirp, mon);
+                       s->nc.name, info);
+        g_free(info);
     }
 }
 
diff --git a/slirp/libslirp.h b/slirp/libslirp.h
index a4f390ee89..04b6db9f49 100644
--- a/slirp/libslirp.h
+++ b/slirp/libslirp.h
@@ -35,7 +35,7 @@ int slirp_remove_hostfwd(Slirp *slirp, int is_udp,
 int slirp_add_exec(Slirp *slirp, void *chardev, const char *cmdline,
                    struct in_addr *guest_addr, int guest_port);
 
-void slirp_connection_info(Slirp *slirp, Monitor *mon);
+char *slirp_connection_info(Slirp *slirp);
 
 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 2784fc420f..ce323ef92e 100644
--- a/slirp/misc.c
+++ b/slirp/misc.c
@@ -8,7 +8,6 @@
 #include "qemu/osdep.h"
 #include "slirp.h"
 #include "libslirp.h"
-#include "monitor/monitor.h"
 #include "qemu/error-report.h"
 #include "qemu/main-loop.h"
 
@@ -198,8 +197,9 @@ fork_exec(struct socket *so, const char *ex)
 }
 #endif
 
-void slirp_connection_info(Slirp *slirp, Monitor *mon)
+char *slirp_connection_info(Slirp *slirp)
 {
+    GString *str = g_string_new(NULL);
     const char * const tcpstates[] = {
         [TCPS_CLOSED]       = "CLOSED",
         [TCPS_LISTEN]       = "LISTEN",
@@ -221,8 +221,9 @@ void slirp_connection_info(Slirp *slirp, Monitor *mon)
     const char *state;
     char buf[20];
 
-    monitor_printf(mon, "  Protocol[State]    FD  Source Address  Port   "
-                        "Dest. Address  Port RecvQ SendQ\n");
+    g_string_append_printf(str,
+        "  Protocol[State]    FD  Source Address  Port   "
+        "Dest. Address  Port RecvQ SendQ\n");
 
     for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) {
         if (so->so_state & SS_HOSTFWD) {
@@ -244,10 +245,10 @@ void slirp_connection_info(Slirp *slirp, Monitor *mon)
             dst_port = so->so_fport;
         }
         snprintf(buf, sizeof(buf), "  TCP[%s]", state);
-        monitor_printf(mon, "%-19s %3d %15s %5d ", buf, so->s,
+        g_string_append_printf(str, "%-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",
+        g_string_append_printf(str, "%15s %5d %5d %5d\n",
                        inet_ntoa(dst_addr), ntohs(dst_port),
                        so->so_rcv.sb_cc, so->so_snd.sb_cc);
     }
@@ -267,10 +268,10 @@ void slirp_connection_info(Slirp *slirp, Monitor *mon)
             dst_addr = so->so_faddr;
             dst_port = so->so_fport;
         }
-        monitor_printf(mon, "%-19s %3d %15s %5d ", buf, so->s,
+        g_string_append_printf(str, "%-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",
+        g_string_append_printf(str, "%15s %5d %5d %5d\n",
                        inet_ntoa(dst_addr), ntohs(dst_port),
                        so->so_rcv.sb_cc, so->so_snd.sb_cc);
     }
@@ -280,9 +281,11 @@ void slirp_connection_info(Slirp *slirp, Monitor *mon)
                      (so->so_expire - curtime) / 1000);
         src.sin_addr = so->so_laddr;
         dst_addr = so->so_faddr;
-        monitor_printf(mon, "%-19s %3d %15s  -    ", buf, so->s,
+        g_string_append_printf(str, "%-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),
+        g_string_append_printf(str, "%15s  -    %5d %5d\n", inet_ntoa(dst_addr),
                        so->so_rcv.sb_cc, so->so_snd.sb_cc);
     }
+
+    return g_string_free(str, FALSE);
 }