tcp: Show tcp queues contents when requested

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

cr-show.c

@@ -23,6 +23,7 @@
 #include "uts_ns.h"
 #include "ipc_ns.h"
 #include "pstree.h"
+#include "cr-show.h"
 
 #include "protobuf.h"
 #include "protobuf/pstree.pb-c.h"
@@ -300,7 +301,7 @@ static struct show_image_info show_infos[] = {
 	SHOW_PLAIN(RLIMIT),
 	SHOW_PLAIN(TUNFILE),
 
-	{ TCP_STREAM_MAGIC,	PB_TCP_STREAM,		true,	NULL, "1:%u 2:%u 3:%u 4:%u", },
+	{ TCP_STREAM_MAGIC,	PB_TCP_STREAM,		true,	show_tcp_stream, "1:%u 2:%u 3:%u 4:%u", },
 	{ STATS_MAGIC,		PB_STATS,		true,	NULL, "1.1:%u 1.2:%u 1.3:%u 1.4:%u 1.5:%Lu 1.6:%Lu 1.7:%Lu", },
 	{ FDINFO_MAGIC,		PB_FDINFO,		false,	NULL, "flags:%#o fd:%d", },
 	{ UNIXSK_MAGIC,		PB_UNIX_SK,		false,	NULL, "1:%#x 2:%#x 3:%d 4:%d 5:%d 6:%d 7:%d 8:%#x 11:S", },

include/cr-show.h

@@ -16,4 +16,5 @@ extern void ipc_shm_handler(int fd, void *obj);
 extern void ipc_msg_handler(int fd, void *obj);
 extern void ipc_sem_handler(int fd, void *obj);
 extern int cr_parse_fd(int fd, u32 magic);
+extern void show_tcp_stream(int fd, void *obj);
 #endif /* __CR_SHOW_H__ */

sk-tcp.c

@@ -20,6 +20,7 @@
 #include "namespaces.h"
 #include "xmalloc.h"
 #include "config.h"
+#include "cr-show.h"
 
 #include "protobuf.h"
 #include "protobuf/tcp-stream.pb-c.h"
@@ -635,3 +636,14 @@ out:
 
 	return ret;
 }
+
+void show_tcp_stream(int fd, void *obj)
+{
+	TcpStreamEntry *e = obj;
+	if (opts.show_pages_content) {
+		pr_msg("In-queue:");
+		print_image_data(fd, e->inq_len, 1);
+		pr_msg("Out-queue:");
+		print_image_data(fd, e->outq_len, 1);
+	}
+}